Commit Graph

28534 Commits

Author SHA1 Message Date
Guo Zhengkui
d794103d52 userfaultfd/selftests: fix uninitialized_var.cocci warning
Fix following coccicheck warning:
tools/testing/selftests/vm/userfaultfd.c:556:23-24:
WARNING this kind of initialization is deprecated

`unsigned long page_nr = *(&page_nr)` has the same form of
uninitialized_var() macro. I remove the redundant assignement. It has
been tested with gcc (Debian 8.3.0-6) 8.3.0.

The patch which removed uninitialized_var() is:
https://lore.kernel.org/all/20121028102007.GA7547@gmail.com/ And there is
very few "/* GCC */" comments in the Linux kernel code now.

Link: https://lkml.kernel.org/r/20220304082333.9252-1-guozhengkui@vivo.com
Signed-off-by: Guo Zhengkui <guozhengkui@vivo.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-22 15:57:08 -07:00
Muchun Song
b147c89cd4 selftests: vm: add a hugetlb test case
Since the head vmemmap page frame associated with each HugeTLB page is
reused, we should hide the PG_head flag of tail struct page from the
user.  Add a tese case to check whether it is work properly.  The test
steps are as follows.

  1) alloc 2MB hugeTLB
  2) get each page frame
  3) apply those APIs in each page frame
  4) Those APIs work completely the same as before.

Reading the flags of a page by /proc/kpageflags is done in
stable_page_flags(), which has invoked PageHead(), PageTail(),
PageCompound() and compound_head().

If those APIs work properly, the head page must have 15 and 17 bits set.
And tail pages must have 16 and 17 bits set but 15 bit unset.  Those
flags are checked in check_page_flags().

Link: https://lkml.kernel.org/r/20211101031651.75851-5-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Cc: Bodeddula Balasubramaniam <bodeddub@amazon.com>
Cc: Chen Huang <chenhuang5@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Fam Zheng <fam.zheng@bytedance.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: Xiongchun Duan <duanxiongchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-22 15:57:08 -07:00
Guillaume Tucker
ef696f93ed selftests, x86: fix how check_cc.sh is being invoked
The $(CC) variable used in Makefiles could contain several arguments
such as "ccache gcc".  These need to be passed as a single string to
check_cc.sh, otherwise only the first argument will be used as the
compiler command.  Without quotes, the $(CC) variable is passed as
distinct arguments which causes the script to fail to build trivial
programs.

Fix this by adding quotes around $(CC) when calling check_cc.sh to pass
the whole string as a single argument to the script even if it has
several words such as "ccache gcc".

Link: https://lkml.kernel.org/r/d0d460d7be0107a69e3c52477761a6fe694c1840.1646991629.git.guillaume.tucker@collabora.com
Fixes: e9886ace22 ("selftests, x86: Rework x86 target architecture detection")
Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>
Tested-by: "kernelci.org bot" <bot@kernelci.org>
Reviewed-by: Guenter Roeck <groeck@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-22 15:57:04 -07:00
Shakeel Butt
6323ec54b4 selftests: memcg: test high limit for single entry allocation
Test the enforcement of memory.high limit for large amount of memory
allocation within a single kernel entry.  There are valid use-cases
where the application can trigger large amount of memory allocation
within a single syscall e.g.  mlock() or mmap(MAP_POPULATE).

Make sure memory.high limit enforcement works for such use-cases.

Link: https://lkml.kernel.org/r/20220211064917.2028469-4-shakeelb@google.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Reviewed-by: Roman Gushchin <guro@fb.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Chris Down <chris@chrisdown.name>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-22 15:57:02 -07:00
Ian Rogers
7bd1da15d2 perf parse-events: Ignore case in topdown.slots check
An issue with icelakex metrics:

  https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/tree/tools/perf/pmu-events/arch/x86/icelakex/icx-metrics.json?h=perf/core&id=65eab2bc7dab326ee892ec5a4c749470b368b51a#n48

That causes the slots not to be first.

Fixes: 94dbfd6781 ("perf parse-events: Architecture specific leader override")
Reported-by: Caleb Biggers <caleb.biggers@intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20220317224309.543736-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-18 18:39:09 -03:00
Ian Rogers
8b464eac97 perf evlist: Avoid iteration for empty evlist.
As seen with 'perf stat --null ..' and reported in:
https://lore.kernel.org/lkml/YjCLcpcX2peeQVCH@kernel.org/

v2. Avoids setting evsel in the empty list case as suggested by Jiri Olsa.

    Committer testing:

Before:

  $  perf stat --null sleep 1
  Segmentation fault (core dumped)
  $

After:

  $  perf stat --null sleep 1

   Performance counter stats for 'sleep 1':

         1.010340646 seconds time elapsed

         0.001420000 seconds user
         0.000000000 seconds sys
  $

Fixes: 472832d2c0 ("perf evlist: Refactor evlist__for_each_cpu()")
Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220317231643.550902-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-18 18:39:09 -03:00
Michael Petlan
3cf6a32f3f perf symbols: Fix symbol size calculation condition
Before this patch, the symbol end address fixup to be called, needed two
conditions being met:

  if (prev->end == prev->start && prev->end != curr->start)

Where
  "prev->end == prev->start" means that prev is zero-long
                             (and thus needs a fixup)
and
  "prev->end != curr->start" means that fixup hasn't been applied yet

However, this logic is incorrect in the following situation:

*curr  = {rb_node = {__rb_parent_color = 278218928,
  rb_right = 0x0, rb_left = 0x0},
  start = 0xc000000000062354,
  end = 0xc000000000062354, namelen = 40, type = 2 '\002',
  binding = 0 '\000', idle = 0 '\000', ignore = 0 '\000',
  inlined = 0 '\000', arch_sym = 0 '\000', annotate2 = false,
  name = 0x1159739e "kprobe_optinsn_page\t[__builtin__kprobes]"}

*prev = {rb_node = {__rb_parent_color = 278219041,
  rb_right = 0x109548b0, rb_left = 0x109547c0},
  start = 0xc000000000062354,
  end = 0xc000000000062354, namelen = 12, type = 2 '\002',
  binding = 1 '\001', idle = 0 '\000', ignore = 0 '\000',
  inlined = 0 '\000', arch_sym = 0 '\000', annotate2 = false,
  name = 0x1095486e "optinsn_slot"}

In this case, prev->start == prev->end == curr->start == curr->end,
thus the condition above thinks that "we need a fixup due to zero
length of prev symbol, but it has been probably done, since the
prev->end == curr->start", which is wrong.

After the patch, the execution path proceeds to arch__symbols__fixup_end
function which fixes up the size of prev symbol by adding page_size to
its end offset.

Fixes: 3b01a413c1 ("perf symbols: Improve kallsyms symbol end addr calculation")
Signed-off-by: Michael Petlan <mpetlan@redhat.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: http://lore.kernel.org/lkml/20220317135536.805-1-mpetlan@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-18 18:39:09 -03:00
Linus Torvalds
551acdc3c3 Networking fixes for 5.17-final, including fixes from netfilter, ipsec,
and wireless.
 
 Current release - regressions:
 
  - Revert "netfilter: nat: force port remap to prevent shadowing
    well-known ports", restore working conntrack on asymmetric paths
 
  - Revert "ath10k: drop beacon and probe response which leak from
    other channel", restore working AP and mesh mode on QCA9984
 
  - eth: intel: fix hang during reboot/shutdown
 
 Current release - new code bugs:
 
  - netfilter: nf_tables: disable register tracking, it needs more
    work to cover all corner cases
 
 Previous releases - regressions:
 
  - ipv6: fix skb_over_panic in __ip6_append_data when (admin-only)
    extension headers get specified
 
  - esp6: fix ESP over TCP/UDP, interpret ipv6_skip_exthdr's return
    value more selectively
 
  - bnx2x: fix driver load failure when FW not present in initrd
 
 Previous releases - always broken:
 
  - vsock: stop destroying unrelated sockets in nested virtualization
 
  - packet: fix slab-out-of-bounds access in packet_recvmsg()
 
 Misc:
 
  - add Paolo Abeni to networking maintainers!
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.17-final' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter, ipsec, and wireless.

  A few last minute revert / disable and fix patches came down from our
  sub-trees. We're not waiting for any fixes at this point.

  Current release - regressions:

   - Revert "netfilter: nat: force port remap to prevent shadowing
     well-known ports", restore working conntrack on asymmetric paths

   - Revert "ath10k: drop beacon and probe response which leak from
     other channel", restore working AP and mesh mode on QCA9984

   - eth: intel: fix hang during reboot/shutdown

  Current release - new code bugs:

   - netfilter: nf_tables: disable register tracking, it needs more work
     to cover all corner cases

  Previous releases - regressions:

   - ipv6: fix skb_over_panic in __ip6_append_data when (admin-only)
     extension headers get specified

   - esp6: fix ESP over TCP/UDP, interpret ipv6_skip_exthdr's return
     value more selectively

   - bnx2x: fix driver load failure when FW not present in initrd

  Previous releases - always broken:

   - vsock: stop destroying unrelated sockets in nested virtualization

   - packet: fix slab-out-of-bounds access in packet_recvmsg()

  Misc:

   - add Paolo Abeni to networking maintainers!"

* tag 'net-5.17-final' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (26 commits)
  iavf: Fix hang during reboot/shutdown
  net: mscc: ocelot: fix backwards compatibility with single-chain tc-flower offload
  net: bcmgenet: skip invalid partial checksums
  bnx2x: fix built-in kernel driver load failure
  net: phy: mscc: Add MODULE_FIRMWARE macros
  net: dsa: Add missing of_node_put() in dsa_port_parse_of
  net: handle ARPHRD_PIMREG in dev_is_mac_header_xmit()
  Revert "ath10k: drop beacon and probe response which leak from other channel"
  hv_netvsc: Add check for kvmalloc_array
  iavf: Fix double free in iavf_reset_task
  ice: destroy flow director filter mutex after releasing VSIs
  ice: fix NULL pointer dereference in ice_update_vsi_tx_ring_stats()
  Add Paolo Abeni to networking maintainers
  atm: eni: Add check for dma_map_single
  net/packet: fix slab-out-of-bounds access in packet_recvmsg()
  net: mdio: mscc-miim: fix duplicate debugfs entry
  net: phy: marvell: Fix invalid comparison in the resume and suspend functions
  esp6: fix check on ipv6_skip_exthdr's return value
  net: dsa: microchip: add spi_device_id tables
  netfilter: nf_tables: disable register tracking
  ...
2022-03-17 12:55:26 -07:00
Yosry Ahmed
1c4debc443 selftests: vm: fix clang build error multiple output files
When building the vm selftests using clang, some errors are seen due to
having headers in the compilation command:

  clang -Wall -I ../../../../usr/include  -no-pie    gup_test.c ../../../../mm/gup_test.h -lrt -lpthread -o .../tools/testing/selftests/vm/gup_test
  clang: error: cannot specify -o when generating multiple output files
  make[1]: *** [../lib.mk:146: .../tools/testing/selftests/vm/gup_test] Error 1

Rework to add the header files to LOCAL_HDRS before including ../lib.mk,
since the dependency is evaluated in '$(OUTPUT)/%:%.c $(LOCAL_HDRS)' in
file lib.mk.

Link: https://lkml.kernel.org/r/20220304000645.1888133-1-yosryahmed@google.com
Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-17 11:02:13 -07:00
Jakub Kicinski
15d703921f Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for net coming late
in the 5.17-rc process:

1) Revert port remap to mitigate shadowing service ports, this is causing
   problems in existing setups and this mitigation can be achieved with
   explicit ruleset, eg.

	... tcp sport < 16386 tcp dport >= 32768 masquerade random

  This patches provided a built-in policy similar to the one described above.

2) Disable register tracking infrastructure in nf_tables. Florian reported
   two issues:

   - Existing expressions with no implemented .reduce interface
     that causes data-store on register should cancel the tracking.
   - Register clobbering might be possible storing data on registers that
     are larger than 32-bits.

   This might lead to generating incorrect ruleset bytecode. These two
   issues are scheduled to be addressed in the next release cycle.

* git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  netfilter: nf_tables: disable register tracking
  Revert "netfilter: conntrack: tag conntracks picked up in local out hook"
  Revert "netfilter: nat: force port remap to prevent shadowing well-known ports"
====================

Link: https://lore.kernel.org/r/20220312220315.64531-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-14 15:51:10 -07:00
Zhengjun Xing
91c9923a47 perf parse: Fix event parser error for hybrid systems
This bug happened on hybrid systems when both cpu_core and cpu_atom
have the same event name such as "UOPS_RETIRED.MS" while their event
terms are different, then during perf stat, the event for cpu_atom
will parse fail and then no output for cpu_atom.

UOPS_RETIRED.MS -> cpu_core/period=0x1e8483,umask=0x4,event=0xc2,frontend=0x8/
UOPS_RETIRED.MS -> cpu_atom/period=0x1e8483,umask=0x1,event=0xc2/

It is because event terms in the "head" of parse_events_multi_pmu_add
will be changed to event terms for cpu_core after parsing UOPS_RETIRED.MS
for cpu_core, then when parsing the same event for cpu_atom, it still
uses the event terms for cpu_core, but event terms for cpu_atom are
different with cpu_core, the event parses for cpu_atom will fail. This
patch fixes it, the event terms should be parsed from the original
event.

This patch can work for the hybrid systems that have the same event
in more than 2 PMUs. It also can work in non-hybrid systems.

Before:

  # perf stat -v  -e  UOPS_RETIRED.MS  -a sleep 1

  Using CPUID GenuineIntel-6-97-1
  UOPS_RETIRED.MS -> cpu_core/period=0x1e8483,umask=0x4,event=0xc2,frontend=0x8/
  Control descriptor is not initialized
  UOPS_RETIRED.MS: 2737845 16068518485 16068518485

 Performance counter stats for 'system wide':

         2,737,845      cpu_core/UOPS_RETIRED.MS/

       1.002553850 seconds time elapsed

After:

  # perf stat -v  -e  UOPS_RETIRED.MS  -a sleep 1

  Using CPUID GenuineIntel-6-97-1
  UOPS_RETIRED.MS -> cpu_core/period=0x1e8483,umask=0x4,event=0xc2,frontend=0x8/
  UOPS_RETIRED.MS -> cpu_atom/period=0x1e8483,umask=0x1,event=0xc2/
  Control descriptor is not initialized
  UOPS_RETIRED.MS: 1977555 16076950711 16076950711
  UOPS_RETIRED.MS: 568684 8038694234 8038694234

 Performance counter stats for 'system wide':

         1,977,555      cpu_core/UOPS_RETIRED.MS/
           568,684      cpu_atom/UOPS_RETIRED.MS/

       1.004758259 seconds time elapsed

Fixes: fb0811535e ("perf parse-events: Allow config on kernel PMU events")
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220307151627.30049-1-zhengjun.xing@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-12 11:04:55 -03:00
Weiguo Li
073a15c351 perf bench: Fix NULL check against wrong variable
We did a NULL check after "epollfdp = calloc(...)", but we checked
"epollfd" instead of "epollfdp".

Signed-off-by: Weiguo Li <liwg06@foxmail.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/tencent_B5D64530EB9C7DBB8D2C88A0C790F1489D0A@qq.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-12 10:49:13 -03:00
Weiguo Li
a7a72631f6 perf parse-events: Fix NULL check against wrong variable
We did a null check after "tmp->symbol = strdup(...)", but we checked
"list->symbol" other than "tmp->symbol".

Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Weiguo Li <liwg06@foxmail.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/tencent_DF39269807EC9425E24787E6DB632441A405@qq.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-12 10:47:52 -03:00
Arnaldo Carvalho de Melo
ec9d50ace3 tools headers cpufeatures: Sync with the kernel sources
To pick the changes from:

  d45476d983 ("x86/speculation: Rename RETPOLINE_AMD to RETPOLINE_LFENCE")

Its just a comment fixup.

This only causes these perf files to be rebuilt:

  CC       /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o
  CC       /tmp/build/perf/bench/mem-memset-x86-64-asm.o

And addresses this perf build warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
  diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h

Cc: Borislav Petkov <bp@suse.de>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/lkml/YiyiHatGaJQM7l/Y@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-12 10:38:05 -03:00
Arnaldo Carvalho de Melo
3ec94eeaff tools kvm headers arm64: Update KVM headers from the kernel sources
To pick the changes from:

  a5905d6af4 ("KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated")

That don't causes any changes in tooling (when built on x86), only
addresses this perf build warning:

  Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm64/include/uapi/asm/kvm.h'
  diff -u tools/arch/arm64/include/uapi/asm/kvm.h arch/arm64/include/uapi/asm/kvm.h

Cc: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/lkml/YiyhAK6sVPc83FaI@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-12 10:33:13 -03:00
Linus Torvalds
186d32bbf0 Networking fixes for 5.17-rc8/final, including fixes from bluetooth,
and ipsec.
 
 Current release - regressions:
 
  - Bluetooth: fix unbalanced unlock in set_device_flags()
 
  - Bluetooth: fix not processing all entries on cmd_sync_work,
    make connect with qualcomm and intel adapters reliable
 
  - Revert "xfrm: state and policy should fail if XFRMA_IF_ID 0"
 
  - xdp: xdp_mem_allocator can be NULL in trace_mem_connect()
 
  - eth: ice: fix race condition and deadlock during interface enslave
 
 Current release - new code bugs:
 
  - tipc: fix incorrect order of state message data sanity check
 
 Previous releases - regressions:
 
  - esp: fix possible buffer overflow in ESP transformation
 
  - dsa: unlock the rtnl_mutex when dsa_master_setup() fails
 
  - phy: meson-gxl: fix interrupt handling in forced mode
 
  - smsc95xx: ignore -ENODEV errors when device is unplugged
 
 Previous releases - always broken:
 
  - xfrm: fix tunnel mode fragmentation behavior
 
  - esp: fix inter address family tunneling on GSO
 
  - tipc: fix null-deref due to race when enabling bearer
 
  - sctp: fix kernel-infoleak for SCTP sockets
 
  - eth: macb: fix lost RX packet wakeup race in NAPI receive
 
  - eth: intel stop disabling VFs due to PF error responses
 
  - eth: bcmgenet: don't claim WOL when its not available
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bluetooth, and ipsec.

  Current release - regressions:

   - Bluetooth: fix unbalanced unlock in set_device_flags()

   - Bluetooth: fix not processing all entries on cmd_sync_work, make
     connect with qualcomm and intel adapters reliable

   - Revert "xfrm: state and policy should fail if XFRMA_IF_ID 0"

   - xdp: xdp_mem_allocator can be NULL in trace_mem_connect()

   - eth: ice: fix race condition and deadlock during interface enslave

  Current release - new code bugs:

   - tipc: fix incorrect order of state message data sanity check

  Previous releases - regressions:

   - esp: fix possible buffer overflow in ESP transformation

   - dsa: unlock the rtnl_mutex when dsa_master_setup() fails

   - phy: meson-gxl: fix interrupt handling in forced mode

   - smsc95xx: ignore -ENODEV errors when device is unplugged

  Previous releases - always broken:

   - xfrm: fix tunnel mode fragmentation behavior

   - esp: fix inter address family tunneling on GSO

   - tipc: fix null-deref due to race when enabling bearer

   - sctp: fix kernel-infoleak for SCTP sockets

   - eth: macb: fix lost RX packet wakeup race in NAPI receive

   - eth: intel stop disabling VFs due to PF error responses

   - eth: bcmgenet: don't claim WOL when its not available"

* tag 'net-5.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (50 commits)
  xdp: xdp_mem_allocator can be NULL in trace_mem_connect().
  ice: Fix race condition during interface enslave
  net: phy: meson-gxl: improve link-up behavior
  net: bcmgenet: Don't claim WOL when its not available
  net: arc_emac: Fix use after free in arc_mdio_probe()
  sctp: fix kernel-infoleak for SCTP sockets
  net: phy: correct spelling error of media in documentation
  net: phy: DP83822: clear MISR2 register to disable interrupts
  gianfar: ethtool: Fix refcount leak in gfar_get_ts_info
  selftests: pmtu.sh: Kill nettest processes launched in subshell.
  selftests: pmtu.sh: Kill tcpdump processes launched by subshell.
  NFC: port100: fix use-after-free in port100_send_complete
  net/mlx5e: SHAMPO, reduce TIR indication
  net/mlx5e: Lag, Only handle events from highest priority multipath entry
  net/mlx5: Fix offloading with ESWITCH_IPV4_TTL_MODIFY_ENABLE
  net/mlx5: Fix a race on command flush flow
  net/mlx5: Fix size field in bufferx_reg struct
  ax25: Fix NULL pointer dereference in ax25_kill_by_device
  net: marvell: prestera: Add missing of_node_put() in prestera_switch_set_base_mac_addr
  net: ethernet: lpc_eth: Handle error for clk_enable
  ...
2022-03-10 16:47:58 -08:00
Guillaume Nault
94a4a4fe4c selftests: pmtu.sh: Kill nettest processes launched in subshell.
When using "run_cmd <command> &", then "$!" refers to the PID of the
subshell used to run <command>, not the command itself. Therefore
nettest_pids actually doesn't contain the list of the nettest commands
running in the background. So cleanup() can't kill them and the nettest
processes run until completion (fortunately they have a 5s timeout).

Fix this by defining a new command for running processes in the
background, for which "$!" really refers to the PID of the command run.

Also, double quote variables on the modified lines, to avoid shellcheck
warnings.

Fixes: ece1278a9b ("selftests: net: add ESP-in-UDP PMTU test")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-09 20:23:32 -08:00
Guillaume Nault
18dfc66755 selftests: pmtu.sh: Kill tcpdump processes launched by subshell.
The cleanup() function takes care of killing processes launched by the
test functions. It relies on variables like ${tcpdump_pids} to get the
relevant PIDs. But tests are run in their own subshell, so updated
*_pids values are invisible to other shells. Therefore cleanup() never
sees any process to kill:

$ ./tools/testing/selftests/net/pmtu.sh -t pmtu_ipv4_exception
TEST: ipv4: PMTU exceptions                                         [ OK ]
TEST: ipv4: PMTU exceptions - nexthop objects                       [ OK ]

$ pgrep -af tcpdump
6084 tcpdump -s 0 -i veth_A-R1 -w pmtu_ipv4_exception_veth_A-R1.pcap
6085 tcpdump -s 0 -i veth_R1-A -w pmtu_ipv4_exception_veth_R1-A.pcap
6086 tcpdump -s 0 -i veth_R1-B -w pmtu_ipv4_exception_veth_R1-B.pcap
6087 tcpdump -s 0 -i veth_B-R1 -w pmtu_ipv4_exception_veth_B-R1.pcap
6088 tcpdump -s 0 -i veth_A-R2 -w pmtu_ipv4_exception_veth_A-R2.pcap
6089 tcpdump -s 0 -i veth_R2-A -w pmtu_ipv4_exception_veth_R2-A.pcap
6090 tcpdump -s 0 -i veth_R2-B -w pmtu_ipv4_exception_veth_R2-B.pcap
6091 tcpdump -s 0 -i veth_B-R2 -w pmtu_ipv4_exception_veth_B-R2.pcap
6228 tcpdump -s 0 -i veth_A-R1 -w pmtu_ipv4_exception_veth_A-R1.pcap
6229 tcpdump -s 0 -i veth_R1-A -w pmtu_ipv4_exception_veth_R1-A.pcap
6230 tcpdump -s 0 -i veth_R1-B -w pmtu_ipv4_exception_veth_R1-B.pcap
6231 tcpdump -s 0 -i veth_B-R1 -w pmtu_ipv4_exception_veth_B-R1.pcap
6232 tcpdump -s 0 -i veth_A-R2 -w pmtu_ipv4_exception_veth_A-R2.pcap
6233 tcpdump -s 0 -i veth_R2-A -w pmtu_ipv4_exception_veth_R2-A.pcap
6234 tcpdump -s 0 -i veth_R2-B -w pmtu_ipv4_exception_veth_R2-B.pcap
6235 tcpdump -s 0 -i veth_B-R2 -w pmtu_ipv4_exception_veth_B-R2.pcap

Fix this by running cleanup() in the context of the test subshell.
Now that each test cleans the environment after completion, there's no
need for calling cleanup() again when the next test starts. So let's
drop it from the setup() function. This is okay because cleanup() is
also called when pmtu.sh starts, so even the first test starts in a
clean environment.

Also, use tcpdump's immediate mode. Otherwise it might not have time to
process buffered packets, resulting in missing packets or even empty
pcap files for short tests.

Note: PAUSE_ON_FAIL is still evaluated before cleanup(), so one can
still inspect the test environment upon failure when using -p.

Fixes: a92a0a7b8e ("selftests: pmtu: Simplify cleanup and namespace names")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-09 20:23:15 -08:00
Florian Westphal
a82c25c366 Revert "netfilter: nat: force port remap to prevent shadowing well-known ports"
This reverts commit 878aed8db3.

This change breaks existing setups where conntrack is used with
asymmetric paths.

In these cases, the NAT transformation occurs on the syn-ack instead of
the syn:

1. SYN    x:12345 -> y -> 443 // sent by initiator, receiverd by responder
2. SYNACK y:443 -> x:12345 // First packet seen by conntrack, as sent by responder
3. tuple_force_port_remap() gets called, sees:
  'tcp from 443 to port 12345 NAT' -> pick a new source port, inititor receives
4. SYNACK y:$RANDOM -> x:12345   // connection is never established

While its possible to avoid the breakage with NOTRACK rules, a kernel
update should not break working setups.

An alternative to the revert is to augment conntrack to tag
mid-stream connections plus more code in the nat core to skip NAT
for such connections, however, this leads to more interaction/integration
between conntrack and NAT.

Therefore, revert, users will need to add explicit nat rules to avoid
port shadowing.

Link: https://lore.kernel.org/netfilter-devel/20220302105908.GA5852@breakpoint.cc/#R
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2051413
Signed-off-by: Florian Westphal <fw@strlen.de>
2022-03-08 13:52:11 +01:00
Linus Torvalds
4a01e748a5 - Mitigate Spectre v2-type Branch History Buffer attacks on machines
which support eIBRS, i.e., the hardware-assisted speculation restriction
 after it has been shown that such machines are vulnerable even with the
 hardware mitigation.
 
 - Do not use the default LFENCE-based Spectre v2 mitigation on AMD as it
 is insufficient to mitigate such attacks. Instead, switch to retpolines
 on all AMD by default.
 
 - Update the docs and add some warnings for the obviously vulnerable
 cmdline configurations.
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Merge tag 'x86_bugs_for_v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 spectre fixes from Borislav Petkov:

 - Mitigate Spectre v2-type Branch History Buffer attacks on machines
   which support eIBRS, i.e., the hardware-assisted speculation
   restriction after it has been shown that such machines are vulnerable
   even with the hardware mitigation.

 - Do not use the default LFENCE-based Spectre v2 mitigation on AMD as
   it is insufficient to mitigate such attacks. Instead, switch to
   retpolines on all AMD by default.

 - Update the docs and add some warnings for the obviously vulnerable
   cmdline configurations.

* tag 'x86_bugs_for_v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/speculation: Warn about eIBRS + LFENCE + Unprivileged eBPF + SMT
  x86/speculation: Warn about Spectre v2 LFENCE mitigation
  x86/speculation: Update link to AMD speculation whitepaper
  x86/speculation: Use generic retpoline by default on AMD
  x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting
  Documentation/hw-vuln: Update spectre doc
  x86/speculation: Add eIBRS + Retpoline options
  x86/speculation: Rename RETPOLINE_AMD to RETPOLINE_LFENCE
2022-03-07 17:29:47 -08:00
Linus Torvalds
06be302970 virtio: last minute fixes
Some fixes that took a while to get ready. Not regressions,
 but they look safe and seem to be worth to have.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "Some last minute fixes that took a while to get ready. Not
  regressions, but they look safe and seem to be worth to have"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  tools/virtio: handle fallout from folio work
  tools/virtio: fix virtio_test execution
  vhost: remove avail_event arg from vhost_update_avail_event()
  virtio: drop default for virtio-mem
  vdpa: fix use-after-free on vp_vdpa_remove
  virtio-blk: Remove BUG_ON() in virtio_queue_rq()
  virtio-blk: Don't use MAX_DISCARD_SEGMENTS if max_discard_seg is zero
  vhost: fix hung thread due to erroneous iotlb entries
  vduse: Fix returning wrong type in vduse_domain_alloc_iova()
  vdpa/mlx5: add validation for VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET command
  vdpa/mlx5: should verify CTRL_VQ feature exists for MQ
  vdpa: factor out vdpa_set_features_unlocked for vdpa internal use
  virtio_console: break out of buf poll on remove
  virtio: document virtio_reset_device
  virtio: acknowledge all features before access
  virtio: unexport virtio_finalize_features
2022-03-07 11:32:17 -08:00
Michael S. Tsirkin
3dd7d135e7 tools/virtio: handle fallout from folio work
just add a stub

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-03-06 06:06:50 -05:00
Stefano Garzarella
32f1b53fe8 tools/virtio: fix virtio_test execution
virtio_test hangs on __vring_new_virtqueue() because `vqs_list_lock`
is not initialized.

Let's initialize it in vdev_info_init().

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20220118150631.167015-1-sgarzare@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
2022-03-06 06:06:50 -05:00
Chengming Zhou
b773827e36 kselftest/vm: fix tests build with old libc
The error message when I build vm tests on debian10 (GLIBC 2.28):

    userfaultfd.c: In function `userfaultfd_pagemap_test':
    userfaultfd.c:1393:37: error: `MADV_PAGEOUT' undeclared (first use
    in this function); did you mean `MADV_RANDOM'?
      if (madvise(area_dst, test_pgsize, MADV_PAGEOUT))
                                         ^~~~~~~~~~~~
                                         MADV_RANDOM

This patch includes these newer definitions from UAPI linux/mman.h, is
useful to fix tests build on systems without these definitions in glibc
sys/mman.h.

Link: https://lkml.kernel.org/r/20220227055330.43087-2-zhouchengming@bytedance.com
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-05 11:08:32 -08:00
Mike Kravetz
ff712a627f selftests/vm: cleanup hugetlb file after mremap test
The hugepage-mremap test will create a file in a hugetlb filesystem.  In
a default 'run_vmtests' run, the file will contain all the hugetlb
pages.  After the test, the file remains and there are no free hugetlb
pages for subsequent tests.  This causes those hugetlb tests to fail.

Change hugepage-mremap to take the name of the hugetlb file as an
argument.  Unlink the file within the test, and just to be sure remove
the file in the run_vmtests script.

Link: https://lkml.kernel.org/r/20220201033459.156944-1-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Acked-by: Yosry Ahmed <yosryahmed@google.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-05 11:08:32 -08:00
Linus Torvalds
b949c21fc2 Networking fixes for 5.17-rc7, including fixes from can, xfrm, wifi,
bluetooth, and netfilter.
 
 Current release - regressions:
 
  - iwlwifi: don't advertise TWT support, prevent FW crash
 
  - xfrm: fix the if_id check in changelink
 
  - xen/netfront: destroy queues before real_num_tx_queues is zeroed
 
  - bluetooth: fix not checking MGMT cmd pending queue, make scanning
    work again
 
 Current release - new code bugs:
 
  - mptcp: make SIOCOUTQ accurate for fallback socket
 
  - bluetooth: access skb->len after null check
 
  - bluetooth: hci_sync: fix not using conn_timeout
 
  - smc: fix cleanup when register ULP fails
 
  - dsa: restore error path of dsa_tree_change_tag_proto
 
  - iwlwifi: fix build error for IWLMEI
 
  - iwlwifi: mvm: propagate error from request_ownership to the user
 
 Previous releases - regressions:
 
  - xfrm: fix pMTU regression when reported pMTU is too small
 
  - xfrm: fix TCP MSS calculation when pMTU is close to 1280
 
  - bluetooth: fix bt_skb_sendmmsg not allocating partial chunks
 
  - ipv6: ensure we call ipv6_mc_down() at most once, prevent leaks
 
  - ipv6: prevent leaks in igmp6 when input queues get full
 
  - fix up skbs delta_truesize in UDP GRO frag_list
 
  - eth: e1000e: fix possible HW unit hang after an s0ix exit
 
  - eth: e1000e: correct NVM checksum verification flow
 
  - ptp: ocp: fix large time adjustments
 
 Previous releases - always broken:
 
  - tcp: make tcp_read_sock() more robust in presence of urgent data
 
  - xfrm: distinguishing SAs and SPs by if_id in xfrm_migrate
 
  - xfrm: fix xfrm_migrate issues when address family changes
 
  - dcb: flush lingering app table entries for unregistered devices
 
  - smc: fix unexpected SMC_CLC_DECL_ERR_REGRMB error
 
  - mac80211: fix EAPoL rekey fail in 802.3 rx path
 
  - mac80211: fix forwarded mesh frames AC & queue selection
 
  - netfilter: nf_queue: fix socket access races and bugs
 
  - batman-adv: fix ToCToU iflink problems and check the result
    belongs to the expected net namespace
 
  - can: gs_usb, etas_es58x: fix opened_channel_cnt's accounting
 
  - can: rcar_canfd: register the CAN device when fully ready
 
  - eth: igb, igc: phy: drop premature return leaking HW semaphore
 
  - eth: ixgbe: xsk: change !netif_carrier_ok() handling in
    ixgbe_xmit_zc(), prevent live lock when link goes down
 
  - eth: stmmac: only enable DMA interrupts when ready
 
  - eth: sparx5: move vlan checks before any changes are made
 
  - eth: iavf: fix races around init, removal, resets and vlan ops
 
  - ibmvnic: more reset flow fixes
 
 Misc:
 
  - eth: fix return value of __setup handlers
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from can, xfrm, wifi, bluetooth, and netfilter.

  Lots of various size fixes, the length of the tag speaks for itself.
  Most of the 5.17-relevant stuff comes from xfrm, wifi and bt trees
  which had been lagging as you pointed out previously. But there's also
  a larger than we'd like portion of fixes for bugs from previous
  releases.

  Three more fixes still under discussion, including and xfrm revert for
  uAPI error.

  Current release - regressions:

   - iwlwifi: don't advertise TWT support, prevent FW crash

   - xfrm: fix the if_id check in changelink

   - xen/netfront: destroy queues before real_num_tx_queues is zeroed

   - bluetooth: fix not checking MGMT cmd pending queue, make scanning
     work again

  Current release - new code bugs:

   - mptcp: make SIOCOUTQ accurate for fallback socket

   - bluetooth: access skb->len after null check

   - bluetooth: hci_sync: fix not using conn_timeout

   - smc: fix cleanup when register ULP fails

   - dsa: restore error path of dsa_tree_change_tag_proto

   - iwlwifi: fix build error for IWLMEI

   - iwlwifi: mvm: propagate error from request_ownership to the user

  Previous releases - regressions:

   - xfrm: fix pMTU regression when reported pMTU is too small

   - xfrm: fix TCP MSS calculation when pMTU is close to 1280

   - bluetooth: fix bt_skb_sendmmsg not allocating partial chunks

   - ipv6: ensure we call ipv6_mc_down() at most once, prevent leaks

   - ipv6: prevent leaks in igmp6 when input queues get full

   - fix up skbs delta_truesize in UDP GRO frag_list

   - eth: e1000e: fix possible HW unit hang after an s0ix exit

   - eth: e1000e: correct NVM checksum verification flow

   - ptp: ocp: fix large time adjustments

  Previous releases - always broken:

   - tcp: make tcp_read_sock() more robust in presence of urgent data

   - xfrm: distinguishing SAs and SPs by if_id in xfrm_migrate

   - xfrm: fix xfrm_migrate issues when address family changes

   - dcb: flush lingering app table entries for unregistered devices

   - smc: fix unexpected SMC_CLC_DECL_ERR_REGRMB error

   - mac80211: fix EAPoL rekey fail in 802.3 rx path

   - mac80211: fix forwarded mesh frames AC & queue selection

   - netfilter: nf_queue: fix socket access races and bugs

   - batman-adv: fix ToCToU iflink problems and check the result belongs
     to the expected net namespace

   - can: gs_usb, etas_es58x: fix opened_channel_cnt's accounting

   - can: rcar_canfd: register the CAN device when fully ready

   - eth: igb, igc: phy: drop premature return leaking HW semaphore

   - eth: ixgbe: xsk: change !netif_carrier_ok() handling in
     ixgbe_xmit_zc(), prevent live lock when link goes down

   - eth: stmmac: only enable DMA interrupts when ready

   - eth: sparx5: move vlan checks before any changes are made

   - eth: iavf: fix races around init, removal, resets and vlan ops

   - ibmvnic: more reset flow fixes

  Misc:

   - eth: fix return value of __setup handlers"

* tag 'net-5.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (92 commits)
  ipv6: fix skb drops in igmp6_event_query() and igmp6_event_report()
  net: dsa: make dsa_tree_change_tag_proto actually unwind the tag proto change
  ixgbe: xsk: change !netif_carrier_ok() handling in ixgbe_xmit_zc()
  selftests: mlxsw: resource_scale: Fix return value
  selftests: mlxsw: tc_police_scale: Make test more robust
  net: dcb: disable softirqs in dcbnl_flush_dev()
  bnx2: Fix an error message
  sfc: extend the locking on mcdi->seqno
  net/smc: fix unexpected SMC_CLC_DECL_ERR_REGRMB error cause by server
  net/smc: fix unexpected SMC_CLC_DECL_ERR_REGRMB error generated by client
  net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()
  tcp: make tcp_read_sock() more robust
  bpf, sockmap: Do not ignore orig_len parameter
  net: ipa: add an interconnect dependency
  net: fix up skbs delta_truesize in UDP GRO frag_list
  iwlwifi: mvm: return value for request_ownership
  nl80211: Update bss channel on channel switch for P2P_CLIENT
  iwlwifi: fix build error for IWLMEI
  ptp: ocp: Add ptp_ocp_adjtime_coarse for large adjustments
  batman-adv: Don't expect inter-netns unique iflink indices
  ...
2022-03-03 11:10:56 -08:00
Amit Cohen
196f9bc050 selftests: mlxsw: resource_scale: Fix return value
The test runs several test cases and is supposed to return an error in
case at least one of them failed.

Currently, the check of the return value of each test case is in the
wrong place, which can result in the wrong return value. For example:

 # TESTS='tc_police' ./resource_scale.sh
 TEST: 'tc_police' [default] 968                                     [FAIL]
         tc police offload count failed
 Error: mlxsw_spectrum: Failed to allocate policer index.
 We have an error talking to the kernel
 Command failed /tmp/tmp.i7Oc5HwmXY:969
 TEST: 'tc_police' [default] overflow 969                            [ OK ]
 ...
 TEST: 'tc_police' [ipv4_max] overflow 969                           [ OK ]

 $ echo $?
 0

Fix this by moving the check to be done after each test case.

Fixes: 059b18e21c ("selftests: mlxsw: Return correct error code in resource scale test")
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-03 08:14:01 -08:00
Amit Cohen
dc97520753 selftests: mlxsw: tc_police_scale: Make test more robust
The test adds tc filters and checks how many of them were offloaded by
grepping for 'in_hw'.

iproute2 commit f4cd4f127047 ("tc: add skip_hw and skip_sw to control
action offload") added offload indication to tc actions, producing the
following output:

 $ tc filter show dev swp2 ingress
 ...
 filter protocol ipv6 pref 1000 flower chain 0 handle 0x7c0
   eth_type ipv6
   dst_ip 2001:db8:1::7bf
   skip_sw
   in_hw in_hw_count 1
         action order 1:  police 0x7c0 rate 10Mbit burst 100Kb mtu 2Kb action drop overhead 0b
         ref 1 bind 1
         not_in_hw
         used_hw_stats immediate

The current grep expression matches on both 'in_hw' and 'not_in_hw',
resulting in incorrect results.

Fix that by using JSON output instead.

Fixes: 5061e77326 ("selftests: mlxsw: Add scale test for tc-police")
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-03 08:14:01 -08:00
Jakub Kicinski
4761df52f1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

1) Use kfree_rcu(ptr, rcu) variant, using kfree_rcu(ptr) was not
   intentional. From Eric Dumazet.

2) Use-after-free in netfilter hook core, from Eric Dumazet.

3) Missing rcu read lock side for netfilter egress hook,
   from Florian Westphal.

4) nf_queue assume state->sk is full socket while it might not be.
   Invoke sock_gen_put(), from Florian Westphal.

5) Add selftest to exercise the reported KASAN splat in 4)

6) Fix possible use-after-free in nf_queue in case sk_refcnt is 0.
   Also from Florian.

7) Use input interface index only for hardware offload, not for
   the software plane. This breaks tc ct action. Patch from Paul Blakey.

* git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  net/sched: act_ct: Fix flow table lookup failure with no originating ifindex
  netfilter: nf_queue: handle socket prefetch
  netfilter: nf_queue: fix possible use-after-free
  selftests: netfilter: add nfqueue TCP_NEW_SYN_RECV socket race test
  netfilter: nf_queue: don't assume sk is full socket
  netfilter: egress: silence egress hook lockdep splats
  netfilter: fix use-after-free in __nf_register_net_hook()
  netfilter: nf_tables: prefer kfree_rcu(ptr, rcu) variant
====================

Link: https://lore.kernel.org/r/20220301215337.378405-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-01 15:13:47 -08:00
Linus Torvalds
fb184c4af9 The bigger part of the change is a revert for x86 hosts. Here the
second patch was supposed to fix the first, but in reality it was
 just as broken, so both have to go.
 
 x86 host:
 
 * Revert incorrect assumption that cr3 changes come with preempt notifier
   callbacks (they don't when static branches are changed, for example)
 
 ARM host:
 
 * Correctly synchronise PMR and co on PSCI CPU_SUSPEND
 
 * Skip tests that depend on GICv3 when the HW isn't available
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "The bigger part of the change is a revert for x86 hosts. Here the
  second patch was supposed to fix the first, but in reality it was just
  as broken, so both have to go.

  x86 host:

   - Revert incorrect assumption that cr3 changes come with preempt
     notifier callbacks (they don't when static branches are changed,
     for example)

  ARM host:

   - Correctly synchronise PMR and co on PSCI CPU_SUSPEND

   - Skip tests that depend on GICv3 when the HW isn't available"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: selftests: aarch64: Skip tests if we can't create a vgic-v3
  Revert "KVM: VMX: Save HOST_CR3 in vmx_prepare_switch_to_guest()"
  Revert "KVM: VMX: Save HOST_CR3 in vmx_set_host_fs_gs()"
  KVM: arm64: Don't miss pending interrupts for suspended vCPU
2022-03-01 12:01:18 -08:00
Florian Westphal
2e78855d31 selftests: netfilter: add nfqueue TCP_NEW_SYN_RECV socket race test
causes:
BUG: KASAN: slab-out-of-bounds in sk_free+0x25/0x80
Write of size 4 at addr ffff888106df0284 by task nf-queue/1459
 sk_free+0x25/0x80
 nf_queue_entry_release_refs+0x143/0x1a0
 nf_reinject+0x233/0x770

... without 'netfilter: nf_queue: don't assume sk is full socket'.

Signed-off-by: Florian Westphal <fw@strlen.de>
2022-03-01 11:48:58 +01:00
Linus Torvalds
2293be58d6 Tracing fixes for 5.17:
- rtla (Real-Time Linux Analysis tool): fix typo in man page
 
  - rtla: Update API -e to -E before it is released
 
  - rlla: Error message fix and memory leak fix
 
  - Partially uninline trace event soft disable to shrink text
 
  - Fix function graph start up test
 
  - Have triggers affect the trace instance they are in and not top level
 
  - Have osnoise sleep in the units it says it uses
 
  - Remove unused ftrace stub function
 
  - Remove event probe redundant info from event in the buffer
 
  - Fix group ownership setting in tracefs
 
  - Ensure trace buffer is minimum size to prevent crashes
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Merge tag 'trace-v5.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:

 - rtla (Real-Time Linux Analysis tool):
    - fix typo in man page
    - Update API -e to -E before it is released
    - Error message fix and memory leak fix

 - Partially uninline trace event soft disable to shrink text

 - Fix function graph start up test

 - Have triggers affect the trace instance they are in and not top level

 - Have osnoise sleep in the units it says it uses

 - Remove unused ftrace stub function

 - Remove event probe redundant info from event in the buffer

 - Fix group ownership setting in tracefs

 - Ensure trace buffer is minimum size to prevent crashes

* tag 'trace-v5.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  rtla/osnoise: Fix error message when failing to enable trace instance
  rtla/osnoise: Free params at the exit
  rtla/hist: Make -E the short version of --entries
  tracing: Fix selftest config check for function graph start up test
  tracefs: Set the group ownership in apply_options() not parse_options()
  tracing/osnoise: Make osnoise_main to sleep for microseconds
  ftrace: Remove unused ftrace_startup_enable() stub
  tracing: Ensure trace buffer is at least 4096 bytes large
  tracing: Uninline trace_trigger_soft_disabled() partly
  eprobes: Remove redundant event type information
  tracing: Have traceon and traceoff trigger honor the instance
  tracing: Dump stacktrace trigger to the corresponding instance
  rtla: Fix systme -> system typo on man page
2022-02-26 12:10:17 -08:00
Mike Kravetz
fda153c89a selftests/memfd: clean up mapping in mfd_fail_write
Running the memfd script ./run_hugetlbfs_test.sh will often end in error
as follows:

    memfd-hugetlb: CREATE
    memfd-hugetlb: BASIC
    memfd-hugetlb: SEAL-WRITE
    memfd-hugetlb: SEAL-FUTURE-WRITE
    memfd-hugetlb: SEAL-SHRINK
    fallocate(ALLOC) failed: No space left on device
    ./run_hugetlbfs_test.sh: line 60: 166855 Aborted                 (core dumped) ./memfd_test hugetlbfs
    opening: ./mnt/memfd
    fuse: DONE

If no hugetlb pages have been preallocated, run_hugetlbfs_test.sh will
allocate 'just enough' pages to run the test.  In the SEAL-FUTURE-WRITE
test the mfd_fail_write routine maps the file, but does not unmap.  As a
result, two hugetlb pages remain reserved for the mapping.  When the
fallocate call in the SEAL-SHRINK test attempts allocate all hugetlb
pages, it is short by the two reserved pages.

Fix by making sure to unmap in mfd_fail_write.

Link: https://lkml.kernel.org/r/20220219004340.56478-1-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-02-26 09:51:17 -08:00
Aneesh Kumar K.V
f39c58008d selftest/vm: fix map_fixed_noreplace test failure
On the latest RHEL the test fails due to executable mapped at 256MB
address

     # ./map_fixed_noreplace
    mmap() @ 0x10000000-0x10050000 p=0xffffffffffffffff result=File exists
    10000000-10010000 r-xp 00000000 fd:04 34905657                           /root/rpmbuild/BUILD/kernel-5.14.0-56.el9/linux-5.14.0-56.el9.ppc64le/tools/testing/selftests/vm/map_fixed_noreplace
    10010000-10020000 r--p 00000000 fd:04 34905657                           /root/rpmbuild/BUILD/kernel-5.14.0-56.el9/linux-5.14.0-56.el9.ppc64le/tools/testing/selftests/vm/map_fixed_noreplace
    10020000-10030000 rw-p 00010000 fd:04 34905657                           /root/rpmbuild/BUILD/kernel-5.14.0-56.el9/linux-5.14.0-56.el9.ppc64le/tools/testing/selftests/vm/map_fixed_noreplace
    10029b90000-10029bc0000 rw-p 00000000 00:00 0                            [heap]
    7fffbb510000-7fffbb750000 r-xp 00000000 fd:04 24534                      /usr/lib64/libc.so.6
    7fffbb750000-7fffbb760000 r--p 00230000 fd:04 24534                      /usr/lib64/libc.so.6
    7fffbb760000-7fffbb770000 rw-p 00240000 fd:04 24534                      /usr/lib64/libc.so.6
    7fffbb780000-7fffbb7a0000 r--p 00000000 00:00 0                          [vvar]
    7fffbb7a0000-7fffbb7b0000 r-xp 00000000 00:00 0                          [vdso]
    7fffbb7b0000-7fffbb800000 r-xp 00000000 fd:04 24514                      /usr/lib64/ld64.so.2
    7fffbb800000-7fffbb810000 r--p 00040000 fd:04 24514                      /usr/lib64/ld64.so.2
    7fffbb810000-7fffbb820000 rw-p 00050000 fd:04 24514                      /usr/lib64/ld64.so.2
    7fffd93f0000-7fffd9420000 rw-p 00000000 00:00 0                          [stack]
    Error: couldn't map the space we need for the test

Fix this by finding a free address using mmap instead of hardcoding
BASE_ADDRESS.

Link: https://lkml.kernel.org/r/20220217083417.373823-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Jann Horn <jannh@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-02-26 09:51:17 -08:00
Daniel Bristot de Oliveira
90f59ee41a rtla/osnoise: Fix error message when failing to enable trace instance
When a trace instance creation fails, tools are printing:

	Could not enable -> osnoiser <- tracer for tracing

Print the actual (and correct) name of the tracer it fails to enable.

Link: https://lkml.kernel.org/r/53ef0582605af91eca14b19dba9fc9febb95d4f9.1645206561.git.bristot@kernel.org

Fixes: b1696371d8 ("rtla: Helper functions for rtla")
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-02-25 21:05:30 -05:00
Daniel Bristot de Oliveira
316f710172 rtla/osnoise: Free params at the exit
The variable that stores the parsed command line arguments are not
being free()d at the rtla osnoise top exit path.

Free params variable before exiting.

Link: https://lkml.kernel.org/r/0be31d8259c7c53b98a39769d60cfeecd8421785.1645206561.git.bristot@kernel.org

Fixes: 1eceb2fc2c ("rtla/osnoise: Add osnoise top mode")
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-02-25 21:05:30 -05:00
Daniel Bristot de Oliveira
dd48f316a1 rtla/hist: Make -E the short version of --entries
Currently, --entries uses -e as the short version in the hist mode of
timerlat and osnoise tools. But as -e is already used to enable events
on trace sessions by other tools, thus let's keep it available for the
same usage for all rtla tools.

Make -E the short version of --entries for hist mode on all tools.

Note: rtla was merged in this merge window, so rtla was not released yet.

Link: https://lkml.kernel.org/r/5dbf0cbe7364d3a05e708926b41a097c59a02b1e.1645206561.git.bristot@kernel.org

Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-02-25 21:05:30 -05:00
Paolo Bonzini
ece32a75f0 KVM/arm64 fixes for 5.17, take #4
- Correctly synchronise PMR and co on PSCI CPU_SUSPEND
 
 - Skip tests that depend on GICv3 when the HW isn't available
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Merge tag 'kvmarm-fixes-5.17-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 5.17, take #4

- Correctly synchronise PMR and co on PSCI CPU_SUSPEND

- Skip tests that depend on GICv3 when the HW isn't available
2022-02-25 09:49:30 -05:00
Mark Brown
456f89e092 KVM: selftests: aarch64: Skip tests if we can't create a vgic-v3
The arch_timer and vgic_irq kselftests assume that they can create a
vgic-v3, using the library function vgic_v3_setup() which aborts with a
test failure if it is not possible to do so. Since vgic-v3 can only be
instantiated on systems where the host has GICv3 this leads to false
positives on older systems where that is not the case.

Fix this by changing vgic_v3_setup() to return an error if the vgic can't
be instantiated and have the callers skip if this happens. We could also
exit flagging a skip in vgic_v3_setup() but this would prevent future test
cases conditionally deciding which GIC to use or generally doing more
complex output.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Tested-by: Ricardo Koller <ricarkol@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220223131624.1830351-1-broonie@kernel.org
2022-02-25 13:02:28 +00:00
Paolo Abeni
63bb8239d8 selftests: mptcp: do complete cleanup at exit
After commit 05be5e273c ("selftests: mptcp: add disconnect tests")
the mptcp selftests leave behind a couple of tmp files after
each run. run_tests_disconnect() misnames a few variables used to
track them. Address the issue setting the appropriate global variables

Fixes: 05be5e273c ("selftests: mptcp: add disconnect tests")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-02-24 21:54:54 -08:00
Linus Torvalds
7ee022567b perf tools fixes for v5.17: 3rd batch
- Fix double free in in the error path when opening perf.data from multiple
   files in a directory instead of from a single file.
 
 - Sync the msr-index.h copy with the kernel sources
 
 - Fix error when printing 'weight' field in 'perf script'.
 
 - Skip failing sigtrap test for arm+aarch64 in 'perf test'.
 
 - Fix failure to use a cpu list for uncore events in hybrid systems, e.g. Intel
   Alder Lake.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-fixes-for-v5.17-2022-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix double free in in the error path when opening perf.data from
   multiple files in a directory instead of from a single file

 - Sync the msr-index.h copy with the kernel sources

 - Fix error when printing 'weight' field in 'perf script'

 - Skip failing sigtrap test for arm+aarch64 in 'perf test'

 - Fix failure to use a cpu list for uncore events in hybrid systems,
   e.g. Intel Alder Lake

* tag 'perf-tools-fixes-for-v5.17-2022-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf script: Fix error when printing 'weight' field
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  perf data: Fix double free in perf_session__delete()
  perf evlist: Fix failed to use cpu list for uncore events
  perf test: Skip failing sigtrap test for arm+aarch64
2022-02-24 14:36:38 -08:00
Linus Torvalds
1f840c0ef4 x86 host:
* Expose KVM_CAP_ENABLE_CAP since it is supported
 
 * Disable KVM_HC_CLOCK_PAIRING in TSC catchup mode
 
 * Ensure async page fault token is nonzero
 
 * Fix lockdep false negative
 
 * Fix FPU migration regression from the AMX changes
 
 x86 guest:
 
 * Don't use PV TLB/IPI/yield on uniprocessor guests
 
 PPC:
 * reserve capability id (topic branch for ppc/kvm)
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "x86 host:

   - Expose KVM_CAP_ENABLE_CAP since it is supported

   - Disable KVM_HC_CLOCK_PAIRING in TSC catchup mode

   - Ensure async page fault token is nonzero

   - Fix lockdep false negative

   - Fix FPU migration regression from the AMX changes

  x86 guest:

   - Don't use PV TLB/IPI/yield on uniprocessor guests

  PPC:

   - reserve capability id (topic branch for ppc/kvm)"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: nSVM: disallow userspace setting of MSR_AMD64_TSC_RATIO to non default value when tsc scaling disabled
  KVM: x86/mmu: make apf token non-zero to fix bug
  KVM: PPC: reserve capability 210 for KVM_CAP_PPC_AIL_MODE_3
  x86/kvm: Don't use pv tlb/ipi/sched_yield if on 1 vCPU
  x86/kvm: Fix compilation warning in non-x86_64 builds
  x86/kvm/fpu: Remove kvm_vcpu_arch.guest_supported_xcr0
  x86/kvm/fpu: Limit guest user_xfeatures to supported bits of XCR0
  kvm: x86: Disable KVM_HC_CLOCK_PAIRING if tsc is in always catchup mode
  KVM: Fix lockdep false negative during host resume
  KVM: x86: Add KVM_CAP_ENABLE_CAP to x86
2022-02-24 14:05:49 -08:00
Linus Torvalds
f672ff9123 Networking fixes for 5.17-rc6, including fixes from bpf and netfilter.
Current release - regressions:
 
  - bpf: fix crash due to out of bounds access into reg2btf_ids
 
  - mvpp2: always set port pcs ops, avoid null-deref
 
  - eth: marvell: fix driver load from initrd
 
  - eth: intel: revert "Fix reset bw limit when DCB enabled with 1 TC"
 
 Current release - new code bugs:
 
  - mptcp: fix race in overlapping signal events
 
 Previous releases - regressions:
 
  - xen-netback: revert hotplug-status changes causing devices to
    not be configured
 
  - dsa:
    - avoid call to __dev_set_promiscuity() while rtnl_mutex isn't held
    - fix panic when removing unoffloaded port from bridge
 
  - dsa: microchip: fix bridging with more than two member ports
 
 Previous releases - always broken:
 
  - bpf:
   - fix crash due to incorrect copy_map_value when both spin lock
     and timer are present in a single value
   - fix a bpf_timer initialization issue with clang
   - do not try bpf_msg_push_data with len 0
   - add schedule points in batch ops
 
  - nf_tables:
    - unregister flowtable hooks on netns exit
    - correct flow offload action array size
    - fix a couple of memory leaks
 
  - vsock: don't check owner in vhost_vsock_stop() while releasing
 
  - gso: do not skip outer ip header in case of ipip and net_failover
 
  - smc: use a mutex for locking "struct smc_pnettable"
 
  - openvswitch: fix setting ipv6 fields causing hw csum failure
 
  - mptcp: fix race in incoming ADD_ADDR option processing
 
  - sysfs: add check for netdevice being present to speed_show
 
  - sched: act_ct: fix flow table lookup after ct clear or switching
    zones
 
  - eth: intel: fixes for SR-IOV forwarding offloads
 
  - eth: broadcom: fixes for selftests and error recovery
 
  - eth: mellanox: flow steering and SR-IOV forwarding fixes
 
 Misc:
 
  - make __pskb_pull_tail() & pskb_carve_frag_list() drop_monitor
    friends not report freed skbs as drops
 
  - force inlining of checksum functions in net/checksum.h
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bpf and netfilter.

  Current release - regressions:

   - bpf: fix crash due to out of bounds access into reg2btf_ids

   - mvpp2: always set port pcs ops, avoid null-deref

   - eth: marvell: fix driver load from initrd

   - eth: intel: revert "Fix reset bw limit when DCB enabled with 1 TC"

  Current release - new code bugs:

   - mptcp: fix race in overlapping signal events

  Previous releases - regressions:

   - xen-netback: revert hotplug-status changes causing devices to not
     be configured

   - dsa:
      - avoid call to __dev_set_promiscuity() while rtnl_mutex isn't
        held
      - fix panic when removing unoffloaded port from bridge

   - dsa: microchip: fix bridging with more than two member ports

  Previous releases - always broken:

   - bpf:
      - fix crash due to incorrect copy_map_value when both spin lock
        and timer are present in a single value
      - fix a bpf_timer initialization issue with clang
      - do not try bpf_msg_push_data with len 0
      - add schedule points in batch ops

   - nf_tables:
      - unregister flowtable hooks on netns exit
      - correct flow offload action array size
      - fix a couple of memory leaks

   - vsock: don't check owner in vhost_vsock_stop() while releasing

   - gso: do not skip outer ip header in case of ipip and net_failover

   - smc: use a mutex for locking "struct smc_pnettable"

   - openvswitch: fix setting ipv6 fields causing hw csum failure

   - mptcp: fix race in incoming ADD_ADDR option processing

   - sysfs: add check for netdevice being present to speed_show

   - sched: act_ct: fix flow table lookup after ct clear or switching
     zones

   - eth: intel: fixes for SR-IOV forwarding offloads

   - eth: broadcom: fixes for selftests and error recovery

   - eth: mellanox: flow steering and SR-IOV forwarding fixes

  Misc:

   - make __pskb_pull_tail() & pskb_carve_frag_list() drop_monitor
     friends not report freed skbs as drops

   - force inlining of checksum functions in net/checksum.h"

* tag 'net-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (85 commits)
  net: mv643xx_eth: process retval from of_get_mac_address
  ping: remove pr_err from ping_lookup
  Revert "i40e: Fix reset bw limit when DCB enabled with 1 TC"
  openvswitch: Fix setting ipv6 fields causing hw csum failure
  ipv6: prevent a possible race condition with lifetimes
  net/smc: Use a mutex for locking "struct smc_pnettable"
  bnx2x: fix driver load from initrd
  Revert "xen-netback: Check for hotplug-status existence before watching"
  Revert "xen-netback: remove 'hotplug-status' once it has served its purpose"
  net/mlx5e: Fix VF min/max rate parameters interchange mistake
  net/mlx5e: Add missing increment of count
  net/mlx5e: MPLSoUDP decap, fix check for unsupported matches
  net/mlx5e: Fix MPLSoUDP encap to use MPLS action information
  net/mlx5e: Add feature check for set fec counters
  net/mlx5e: TC, Skip redundant ct clear actions
  net/mlx5e: TC, Reject rules with forward and drop actions
  net/mlx5e: TC, Reject rules with drop and modify hdr action
  net/mlx5e: kTLS, Use CHECKSUM_UNNECESSARY for device-offloaded packets
  net/mlx5e: Fix wrong return value on ioctl EEPROM query failure
  net/mlx5: Fix possible deadlock on rule deletion
  ...
2022-02-24 12:45:32 -08:00
Linus Torvalds
4eb0a7c8e1 slab fixes for 5.17-rc6
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Merge tag 'slab-for-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

Pull slab fixes from Vlastimil Babka:

 - Build fix (workaround) for clang.

 - Fix a /proc/kcore based slabinfo script broken by struct slab changes
   in 5.17-rc1.

* tag 'slab-for-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  tools/cgroup/slabinfo: update to work with struct slab
  slab: remove __alloc_size attribute from __kmalloc_track_caller
2022-02-23 11:33:12 -08:00
German Gomez
13e741b834 perf script: Fix error when printing 'weight' field
In SPE traces the 'weight' field can't be printed in 'perf script'
because the 'dummy:u' event doesn't have the WEIGHT attribute set.

Use evsel__do_check_stype(..) to check this field, as it's done with
other fields such as "phys_addr".

Before:

  $ perf record -e arm_spe_0// -- sleep 1
  $ perf script -F event,ip,weight
  Samples for 'dummy:u' event do not have WEIGHT attribute set. Cannot print 'weight' field.

After:

  $ perf script -F event,ip,weight
     l1d-access:               12 ffffaf629d4cb320
     tlb-access:               12 ffffaf629d4cb320
         memory:               12 ffffaf629d4cb320

Fixes: b0fde9c6e2 ("perf arm-spe: Add SPE total latency as PERF_SAMPLE_WEIGHT")
Signed-off-by: German Gomez <german.gomez@arm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220221171707.62960-1-german.gomez@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-22 21:17:55 -03:00
Arnaldo Carvalho de Melo
5b061a322b tools arch x86: Sync the msr-index.h copy with the kernel sources
To pick up the changes in:

  3915035282 ("KVM: x86: SVM: move avic definitions from AMD's spec to svm.h")

Addressing these tools/perf build warnings:

    diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h
    Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h'

That makes the beautification scripts to pick some new entries:

  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before
  $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h
  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after
  $ diff -u before after
  --- before	2022-02-22 17:35:36.996271430 -0300
  +++ after	2022-02-22 17:35:46.258503347 -0300
  @@ -287,6 +287,7 @@
   	[0xc0010114 - x86_AMD_V_KVM_MSRs_offset] = "VM_CR",
   	[0xc0010115 - x86_AMD_V_KVM_MSRs_offset] = "VM_IGNNE",
   	[0xc0010117 - x86_AMD_V_KVM_MSRs_offset] = "VM_HSAVE_PA",
  +	[0xc001011b - x86_AMD_V_KVM_MSRs_offset] = "AMD64_SVM_AVIC_DOORBELL",
   	[0xc001011e - x86_AMD_V_KVM_MSRs_offset] = "AMD64_VM_PAGE_FLUSH",
   	[0xc001011f - x86_AMD_V_KVM_MSRs_offset] = "AMD64_VIRT_SPEC_CTRL",
   	[0xc0010130 - x86_AMD_V_KVM_MSRs_offset] = "AMD64_SEV_ES_GHCB",
  $

And this gets rebuilt:

  CC      /tmp/build/perf/trace/beauty/tracepoints/x86_msr.o
  LD      /tmp/build/perf/trace/beauty/tracepoints/perf-in.o
  LD      /tmp/build/perf/trace/beauty/perf-in.o
  CC      /tmp/build/perf/util/amd-sample-raw.o
  LD      /tmp/build/perf/util/perf-in.o
  LD      /tmp/build/perf/perf-in.o
  LINK    /tmp/build/perf/perf

Now one can trace systemwide asking to see backtraces to where those
MSRs are being read/written with:

  # perf trace -e msr:*_msr/max-stack=32/ --filter="msr>=AMD64_SVM_AVIC_DOORBELL && msr<=AMD64_SEV_ES_GHCB"
  ^C#

If we use -v (verbose mode) we can see what it does behind the scenes:

  # perf trace -v -e msr:*_msr/max-stack=32/ --filter="msr>=AMD64_SVM_AVIC_DOORBELL && msr<=AMD64_SEV_ES_GHCB"
  Using CPUID AuthenticAMD-25-21-0
  0xc001011b
  0xc0010130
  New filter for msr:read_msr: (msr>=0xc001011b && msr<=0xc0010130) && (common_pid != 1019953 && common_pid != 3629)
  0xc001011b
  0xc0010130
  New filter for msr:write_msr: (msr>=0xc001011b && msr<=0xc0010130) && (common_pid != 1019953 && common_pid != 3629)
  mmap size 528384B
  ^C#

  Example with a frequent msr:

    # perf trace -v -e msr:*_msr/max-stack=32/ --filter="msr==IA32_SPEC_CTRL" --max-events 2
    Using CPUID AuthenticAMD-25-21-0
    0x48
    New filter for msr:read_msr: (msr==0x48) && (common_pid != 2612129 && common_pid != 3841)
    0x48
    New filter for msr:write_msr: (msr==0x48) && (common_pid != 2612129 && common_pid != 3841)
    mmap size 528384B
    Looking at the vmlinux_path (8 entries long)
    symsrc__init: build id mismatch for vmlinux.
    Using /proc/kcore for kernel data
    Using /proc/kallsyms for symbols
       0.000 Timer/2525383 msr:write_msr(msr: IA32_SPEC_CTRL, val: 6)
                                         do_trace_write_msr ([kernel.kallsyms])
                                         do_trace_write_msr ([kernel.kallsyms])
                                         __switch_to_xtra ([kernel.kallsyms])
                                         __switch_to ([kernel.kallsyms])
                                         __schedule ([kernel.kallsyms])
                                         schedule ([kernel.kallsyms])
                                         futex_wait_queue_me ([kernel.kallsyms])
                                         futex_wait ([kernel.kallsyms])
                                         do_futex ([kernel.kallsyms])
                                         __x64_sys_futex ([kernel.kallsyms])
                                         do_syscall_64 ([kernel.kallsyms])
                                         entry_SYSCALL_64_after_hwframe ([kernel.kallsyms])
                                         __futex_abstimed_wait_common64 (/usr/lib64/libpthread-2.33.so)
       0.030 :0/0 msr:write_msr(msr: IA32_SPEC_CTRL, val: 2)
                                         do_trace_write_msr ([kernel.kallsyms])
                                         do_trace_write_msr ([kernel.kallsyms])
                                         __switch_to_xtra ([kernel.kallsyms])
                                         __switch_to ([kernel.kallsyms])
                                         __schedule ([kernel.kallsyms])
                                         schedule_idle ([kernel.kallsyms])
                                         do_idle ([kernel.kallsyms])
                                         cpu_startup_entry ([kernel.kallsyms])
                                         secondary_startup_64_no_verify ([kernel.kallsyms])
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Maxim Levitsky <mlevitsk@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: http://lore.kernel.org/lkml/YhVKxaft+z8rpOfy@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-22 17:43:05 -03:00
Alexey Bayduraev
69560e366f perf data: Fix double free in perf_session__delete()
When perf_data__create_dir() fails, it calls close_dir(), but
perf_session__delete() also calls close_dir() and since dir.version and
dir.nr were initialized by perf_data__create_dir(), a double free occurs.

This patch moves the initialization of dir.version and dir.nr after
successful initialization of dir.files, that prevents double freeing.
This behavior is already implemented in perf_data__open_dir().

Fixes: 1455206311 ("perf data: Add perf_data__(create_dir|close_dir) functions")
Signed-off-by: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Antonov <alexander.antonov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220218152341.5197-2-alexey.v.bayduraev@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-22 17:34:16 -03:00
Nicholas Piggin
93b71801a8 KVM: PPC: reserve capability 210 for KVM_CAP_PPC_AIL_MODE_3
Add KVM_CAP_PPC_AIL_MODE_3 to advertise the capability to set the AIL
resource mode to 3 with the H_SET_MODE hypercall. This capability
differs between processor types and KVM types (PR, HV, Nested HV), and
affects guest-visible behaviour.

QEMU will implement a cap-ail-mode-3 to control this behaviour[1], and
use the KVM CAP if available to determine KVM support[2].

Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-02-22 09:06:54 -05:00
Roman Gushchin
221944736f tools/cgroup/slabinfo: update to work with struct slab
After the introduction of the dedicated struct slab to describe slab
pages by commit d122019bf0 ("mm: Split slab into its own type") and
the following removal of the corresponding struct page's fields by
commit 07f910f9b7 ("mm: Remove slab from struct page") the
memcg_slabinfo tool broke. An attempt to run it produces a trace like
this:
Traceback (most recent call last):
  File "/usr/bin/drgn", line 33, in <module>
    sys.exit(load_entry_point('drgn==0.0.16', 'console_scripts', 'drgn')())
  File "/usr/lib64/python3.9/site-packages/drgn/internal/cli.py", line 133, in main
    runpy.run_path(args.script[0], init_globals=init_globals, run_name="__main__")
  File "/usr/lib64/python3.9/runpy.py", line 268, in run_path
    return _run_module_code(code, init_globals, run_name,
  File "/usr/lib64/python3.9/runpy.py", line 97, in _run_module_code
    _run_code(code, mod_globals, init_globals,
  File "/usr/lib64/python3.9/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "memcg_slabinfo.py", line 226, in <module>
    main()
  File "memcg_slabinfo.py", line 199, in main
    cache = page.slab_cache
AttributeError: 'struct page' has no member 'slab_cache'

The problem can be fixed by explicitly casting struct page * to struct
slab * for slab pages. The tools works as expected with this fix, e.g.:

cred_jar             776    776    192   21    1 : tunables    0    0    0 : slabdata    547    547      0
kmalloc-cg-32          6      6     32  128    1 : tunables    0    0    0 : slabdata      9      9      0
files_cache            3      3    832   39    8 : tunables    0    0    0 : slabdata      8      8      0
kmalloc-cg-512         1      1    512   32    4 : tunables    0    0    0 : slabdata     10     10      0
task_struct           10     10   6720    4    8 : tunables    0    0    0 : slabdata     63     63      0
mm_struct              3      3   1664   19    8 : tunables    0    0    0 : slabdata      9      9      0
kmalloc-cg-16          1      1     16  256    1 : tunables    0    0    0 : slabdata      8      8      0
pde_opener             1      1     40  102    1 : tunables    0    0    0 : slabdata      8      8      0
anon_vma_chain       375    375     64   64    1 : tunables    0    0    0 : slabdata     81     81      0
radix_tree_node        3      3    584   28    4 : tunables    0    0    0 : slabdata    419    419      0
dentry                98     98    312   26    2 : tunables    0    0    0 : slabdata   1420   1420      0
btrfs_inode            3      3   2368   13    8 : tunables    0    0    0 : slabdata    730    730      0
signal_cache           3      3   1600   20    8 : tunables    0    0    0 : slabdata     17     17      0
sighand_cache          3      3   2240   14    8 : tunables    0    0    0 : slabdata     20     20      0
filp                  90     90    512   32    4 : tunables    0    0    0 : slabdata     95     95      0
anon_vma             214    214    200   20    1 : tunables    0    0    0 : slabdata    162    162      0
kmalloc-cg-1k          1      1   1024   32    8 : tunables    0    0    0 : slabdata     22     22      0
pid                   10     10    256   32    2 : tunables    0    0    0 : slabdata     14     14      0
kmalloc-cg-64          2      2     64   64    1 : tunables    0    0    0 : slabdata      8      8      0
kmalloc-cg-96          3      3     96   42    1 : tunables    0    0    0 : slabdata      8      8      0
sock_inode_cache       5      5   1408   23    8 : tunables    0    0    0 : slabdata     29     29      0
UNIX                   7      7   1920   17    8 : tunables    0    0    0 : slabdata     21     21      0
inode_cache           36     36   1152   28    8 : tunables    0    0    0 : slabdata    680    680      0
proc_inode_cache      26     26   1224   26    8 : tunables    0    0    0 : slabdata     64     64      0
kmalloc-cg-2k          2      2   2048   16    8 : tunables    0    0    0 : slabdata      9      9      0

v2: change naming and count_partial()/count_free()/for_each_slab()
    signatures to work with slabs, suggested by Matthew Wilcox

Fixes: 07f910f9b7 ("mm: Remove slab from struct page")
Reported-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Roman Gushchin <guro@fb.com>
Tested-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Link: https://lore.kernel.org/linux-patches/Yg2cKKnIboNu7j+p@carbon.DHCP.thefacebook.com/
2022-02-21 11:34:49 +01:00
Peter Zijlstra (Intel)
d45476d983 x86/speculation: Rename RETPOLINE_AMD to RETPOLINE_LFENCE
The RETPOLINE_AMD name is unfortunate since it isn't necessarily
AMD only, in fact Hygon also uses it. Furthermore it will likely be
sufficient for some Intel processors. Therefore rename the thing to
RETPOLINE_LFENCE to better describe what it is.

Add the spectre_v2=retpoline,lfence option as an alias to
spectre_v2=retpoline,amd to preserve existing setups. However, the output
of /sys/devices/system/cpu/vulnerabilities/spectre_v2 will be changed.

  [ bp: Fix typos, massage. ]

Co-developed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
2022-02-21 10:21:28 +01:00