The madv_populate selftest currently builds with a warning when the
local installed headers (via the distribution) don't include
MADV_POPULATE_READ and MADV_POPULATE_WRITE. The warning is correct,
because the test cannot locate the necessary header.
The reason is that the in-tree installed headers (usr/include) have a
"linux" instead of a "sys" subdirectory.
Including "linux/mman.h" instead of "sys/mman.h" doesn't work (e.g.,
mmap() and madvise() are not defined that way). The only thing that
seems to work is including "linux/mman.h" in addition to "sys/mman.h".
We can get rid of our availability check and simplify.
Link: https://lkml.kernel.org/r/20211015165758.41374-1-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reported-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When executing transhuge-stress with an argument to specify the virtual
memory size for testing, the ram size is reported as 0, e.g.
transhuge-stress 384
thp-mmap: allocate 192 transhuge pages, using 384 MiB virtual memory and 0 MiB of ram
thp-mmap: 0.184 s/loop, 0.957 ms/page, 2090.265 MiB/s 192 succeed, 0 failed
This appears to be due to a thinko in commit 0085d61fe0
("selftests/vm/transhuge-stress: stress test for memory compaction"),
where, at a guess, the intent was to base "xyz MiB of ram" on `ram`
size.
Here are results after using `ram` size:
thp-mmap: allocate 192 transhuge pages, using 384 MiB virtual memory and 14 MiB of ram
Link: https://lkml.kernel.org/r/20210825135843.29052-1-george_davis@mentor.com
Fixes: 0085d61fe0 ("selftests/vm/transhuge-stress: stress test for memory compaction")
Signed-off-by: George G. Davis <davis.george@siemens.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Eugeniu Rosca <erosca@de.adit-jv.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When viewing page owner information, we may be more concerned about the
total memory rather than the times of stack appears. Therefore, the
following adjustments are made:
1. Added the statistics on the total number of pages.
2. Added the optional parameter "-m" to configure the program to sort by
memory (total pages).
The general output of page_owner is as follows:
Page allocated via order XXX, ...
PFN XXX ...
// Detailed stack
Page allocated via order XXX, ...
PFN XXX ...
// Detailed stack
The original page_owner_sort ignores PFN rows, puts the remaining rows
in buf, counts the times of buf, and finally sorts them according to the
times. General output:
XXX times:
Page allocated via order XXX, ...
// Detailed stack
Now, we use regexp to extract the page order value from the buf, and
count the total pages for the buf. General output:
XXX times, XXX pages:
Page allocated via order XXX, ...
// Detailed stack
By default, it is still sorted by the times of buf; If you want to sort
by the pages nums of buf, use the new -m parameter.
Link: https://lkml.kernel.org/r/1631678242-41033-1-git-send-email-weizhenliang@huawei.com
Signed-off-by: Zhenliang Wei <weizhenliang@huawei.com>
Cc: Tang Bin <tangbin@cmss.chinamobile.com>
Cc: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Cc: Zhenliang Wei <weizhenliang@huawei.com>
Cc: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Today, we assert that the ioctls the kernel reports as supported for a
registration match a precomputed list. We decide which ioctls are
supported by examining the memory type. Then, in several locations we
"fix up" this list by adding or removing things this initial decision
got wrong.
What ioctls the kernel reports is actually a function of several things:
- The memory type
- Kernel feature support (e.g., no writeprotect on aarch64)
- The registration type (e.g., CONTINUE only supported for MINOR mode)
So, we can't fully compute this at the start, in set_test_type. It
varies per test, depending on what registration mode(s) those tests use.
Instead, introduce a new function which computes the correct list. This
centralizes the add/remove of ioctls depending on these function inputs
in one place, so we don't have to repeat ourselves in various tests.
Not only is the resulting code a bit shorter, but it fixes a real bug in
the existing code: previously, we would incorrectly require the
writeprotect ioctl to be present on aarch64, where it isn't actually
supported.
Link: https://lkml.kernel.org/r/20210930212309.4001967-4-axelrasmussen@google.com
Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
Reviewed-by: Peter Xu <peterx@redhat.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>
Before any tests are run, in set_test_type, we decide what feature(s) we
are going to be testing, based upon our command line arguments.
However, the supported features are not just a function of the memory
type being used, so this is broken.
For instance, consider writeprotect support. It is "normally" supported
for anonymous memory, but furthermore it requires that the kernel has
CONFIG_HAVE_ARCH_USERFAULTFD_WP. So, it is *not* supported at all on
aarch64, for example.
So, this fixes this by querying the kernel for the set of features it
supports in set_test_type, by opening a userfaultfd and issuing a
UFFDIO_API ioctl. Based upon the reported features, we toggle what
tests are enabled.
Link: https://lkml.kernel.org/r/20210930212309.4001967-3-axelrasmussen@google.com
Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
Reviewed-by: Peter Xu <peterx@redhat.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>
Patch series "Small userfaultfd selftest fixups", v2.
This patch (of 3):
Two arguments for doing this:
First, and maybe most importantly, the resulting code is significantly
shorter / simpler.
Then, we avoid using GNU libc extensions. Why does this matter? It
makes testing userfaultfd with the selftest easier e.g. on distros
which use something other than glibc (e.g., Alpine, which uses musl);
basically, it makes the test more portable.
Link: https://lkml.kernel.org/r/20210930212309.4001967-2-axelrasmussen@google.com
Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
Reviewed-by: Peter Xu <peterx@redhat.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>
-F weight in perf script is broken.
# ./perf mem record
# ./perf script -F weight
Samples for 'dummy:HG' event do not have WEIGHT attribute set. Cannot
print 'weight' field.
The sample type, PERF_SAMPLE_WEIGHT_STRUCT, is an alternative of the
PERF_SAMPLE_WEIGHT sample type. They share the same space, weight. The
lower 32 bits are exactly the same for both sample type. The higher 32
bits may be different for different architecture. For a new kernel on
x86, the PERF_SAMPLE_WEIGHT_STRUCT is used. For an old kernel or other
ARCHs, the PERF_SAMPLE_WEIGHT is used.
With -F weight, current perf script will only check the input string
"weight" with the PERF_SAMPLE_WEIGHT sample type. Because the commit
ea8d0ed6ea ("perf tools: Support PERF_SAMPLE_WEIGHT_STRUCT") didn't
update the PERF_SAMPLE_WEIGHT_STRUCT sample type for perf script. For a
new kernel on x86, the check fails.
Use PERF_SAMPLE_WEIGHT_TYPE, which supports both sample types, to
replace PERF_SAMPLE_WEIGHT
Fixes: ea8d0ed6ea ("perf tools: Support PERF_SAMPLE_WEIGHT_STRUCT")
Reported-by: Joe Mario <jmario@redhat.com>
Reviewed-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Joe Mario <jmario@redhat.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Joe Mario <jmario@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: https://lore.kernel.org/r/1632929894-102778-1-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Got following build fail on powerpc:
CC arch/powerpc/util/skip-callchain-idx.o
In function ‘check_return_reg’,
inlined from ‘check_return_addr’ at arch/powerpc/util/skip-callchain-idx.c:213:7,
inlined from ‘arch_skip_callchain_idx’ at arch/powerpc/util/skip-callchain-idx.c:265:7:
arch/powerpc/util/skip-callchain-idx.c:54:18: error: ‘dwarf_frame_register’ accessing 96 bytes \
in a region of size 64 [-Werror=stringop-overflow=]
54 | result = dwarf_frame_register(frame, ra_regno, ops_mem, &ops, &nops);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/util/skip-callchain-idx.c: In function ‘arch_skip_callchain_idx’:
arch/powerpc/util/skip-callchain-idx.c:54:18: note: referencing argument 3 of type ‘Dwarf_Op *’
In file included from /usr/include/elfutils/libdwfl.h:32,
from arch/powerpc/util/skip-callchain-idx.c:10:
/usr/include/elfutils/libdw.h:1069:12: note: in a call to function ‘dwarf_frame_register’
1069 | extern int dwarf_frame_register (Dwarf_Frame *frame, int regno,
| ^~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
The dwarf_frame_register args changed with [1],
Updating ops_mem accordingly.
[1] https://sourceware.org/git/?p=elfutils.git;a=commit;h=5621fe5443da23112170235dd5cac161e5c75e65
Reviewed-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Mark Wieelard <mjw@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Link: https://lore.kernel.org/r/20210928195253.1267023-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
When perf.data is not written cleanly, we would like to process existing
data as much as possible (please see f_header.data.size == 0 condition
in perf_session__read_header). However, perf.data with partial data may
crash perf. Specifically, we see crash in 'perf script' for NULL
session->header.env.arch.
Fix this by checking session->header.env.arch before using it to determine
native_arch. Also split the if condition so it is easier to read.
Committer notes:
If it is a pipe, we already assume is a native arch, so no need to check
session->header.env.arch.
Signed-off-by: Song Liu <songliubraving@fb.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-team@fb.com
Cc: stable@vger.kernel.org
Link: http://lore.kernel.org/lkml/20211004053238.514936-1-songliubraving@fb.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Daniel Borkmann says:
====================
pull-request: bpf 2021-10-26
We've added 12 non-merge commits during the last 7 day(s) which contain
a total of 23 files changed, 118 insertions(+), 98 deletions(-).
The main changes are:
1) Fix potential race window in BPF tail call compatibility check, from Toke Høiland-Jørgensen.
2) Fix memory leak in cgroup fs due to missing cgroup_bpf_offline(), from Quanyang Wang.
3) Fix file descriptor reference counting in generic_map_update_batch(), from Xu Kuohai.
4) Fix bpf_jit_limit knob to the max supported limit by the arch's JIT, from Lorenz Bauer.
5) Fix BPF sockmap ->poll callbacks for UDP and AF_UNIX sockets, from Cong Wang and Yucong Sun.
6) Fix BPF sockmap concurrency issue in TCP on non-blocking sendmsg calls, from Liu Jian.
7) Fix build failure of INODE_STORAGE and TASK_STORAGE maps on !CONFIG_NET, from Tejun Heo.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf: Fix potential race in tail call compatibility check
bpf: Move BPF_MAP_TYPE for INODE_STORAGE and TASK_STORAGE outside of CONFIG_NET
selftests/bpf: Use recv_timeout() instead of retries
net: Implement ->sock_is_readable() for UDP and AF_UNIX
skmsg: Extract and reuse sk_msg_is_readable()
net: Rename ->stream_memory_read to ->sock_is_readable
tcp_bpf: Fix one concurrency problem in the tcp_bpf_send_verdict function
cgroup: Fix memory leak caused by missing cgroup_bpf_offline
bpf: Fix error usage of map_fd and fdget() in generic_map_update_batch()
bpf: Prevent increasing bpf_jit_limit above max
bpf: Define bpf_jit_alloc_exec_limit for arm64 JIT
bpf: Define bpf_jit_alloc_exec_limit for riscv JIT
====================
Link: https://lore.kernel.org/r/20211026201920.11296-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter, and can.
We'll have one more fix for a socket accounting regression, it's still
getting polished. Otherwise things look fine.
Current release - regressions:
- revert "vrf: reset skb conntrack connection on VRF rcv", there are
valid uses for previous behavior
- can: m_can: fix iomap_read_fifo() and iomap_write_fifo()
Current release - new code bugs:
- mlx5: e-switch, return correct error code on group creation failure
Previous releases - regressions:
- sctp: fix transport encap_port update in sctp_vtag_verify
- stmmac: fix E2E delay mechanism (in PTP timestamping)
Previous releases - always broken:
- netfilter: ip6t_rt: fix out-of-bounds read of ipv6_rt_hdr
- netfilter: xt_IDLETIMER: fix out-of-bound read caused by lack of
init
- netfilter: ipvs: make global sysctl read-only in non-init netns
- tcp: md5: fix selection between vrf and non-vrf keys
- ipv6: count rx stats on the orig netdev when forwarding
- bridge: mcast: use multicast_membership_interval for IGMPv3
- can:
- j1939: fix UAF for rx_kref of j1939_priv abort sessions on
receiving bad messages
- isotp: fix TX buffer concurrent access in isotp_sendmsg() fix
return error on FC timeout on TX path
- ice: fix re-init of RDMA Tx queues and crash if RDMA was not inited
- hns3: schedule the polling again when allocation fails, prevent
stalls
- drivers: add missing of_node_put() when aborting
for_each_available_child_of_node()
- ptp: fix possible memory leak and UAF in ptp_clock_register()
- e1000e: fix packet loss in burst mode on Tiger Lake and later
- mlx5e: ipsec: fix more checksum offload issues"
* tag 'net-5.15-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (75 commits)
usbnet: sanity check for maxpacket
net: enetc: make sure all traffic classes can send large frames
net: enetc: fix ethtool counter name for PM0_TERR
ptp: free 'vclock_index' in ptp_clock_release()
sfc: Don't use netif_info before net_device setup
sfc: Export fibre-specific supported link modes
net/mlx5e: IPsec: Fix work queue entry ethernet segment checksum flags
net/mlx5e: IPsec: Fix a misuse of the software parser's fields
net/mlx5e: Fix vlan data lost during suspend flow
net/mlx5: E-switch, Return correct error code on group creation failure
net/mlx5: Lag, change multipath and bonding to be mutually exclusive
ice: Add missing E810 device ids
igc: Update I226_K device ID
e1000e: Fix packet loss on Tiger Lake and later
e1000e: Separate TGP board type from SPT
ptp: Fix possible memory leak in ptp_clock_register()
net: stmmac: Fix E2E delay mechanism
nfc: st95hf: Make spi remove() callback return zero
net: hns3: disable sriov before unload hclge layer
net: hns3: fix vf reset workqueue cannot exit
...
Pablo Neira Ayuso says:
====================
Netfilter/IPVS fixes for net
The following patchset contains Netfilter fixes for net:
1) Crash due to missing initialization of timer data in
xt_IDLETIMER, from Juhee Kang.
2) NF_CONNTRACK_SECMARK should be bool in Kconfig, from Vegard Nossum.
3) Skip netdev events on netns removal, from Florian Westphal.
4) Add testcase to show port shadowing via UDP, also from Florian.
5) Remove pr_debug() code in ip6t_rt, this fixes a crash due to
unsafe access to non-linear skbuff, from Xin Long.
6) Make net/ipv4/vs/debug_level read-only from non-init netns,
from Antoine Tenart.
7) Remove bogus invocation to bash in selftests/netfilter/nft_flowtable.sh
also from Florian.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull kvm fixes from Paolo Bonzini:
"Tools:
- kvm_stat: do not show halt_wait_ns since it is not a cumulative statistic
x86:
- clean ups and fixes for bus lock vmexit and lazy allocation of rmaps
- two fixes for SEV-ES (one more coming as soon as I get reviews)
- fix for static_key underflow
ARM:
- Properly refcount pages used as a concatenated stage-2 PGD
- Fix missing unlock when detecting the use of MTE+VM_SHARED"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: SEV-ES: reduce ghcb_sa_len to 32 bits
KVM: VMX: Remove redundant handling of bus lock vmexit
KVM: kvm_stat: do not show halt_wait_ns
KVM: x86: WARN if APIC HW/SW disable static keys are non-zero on unload
Revert "KVM: x86: Open code necessary bits of kvm_lapic_set_base() at vCPU RESET"
KVM: SEV-ES: Set guest_state_protected after VMSA update
KVM: X86: fix lazy allocation of rmaps
KVM: SEV-ES: fix length of string I/O
KVM: arm64: Release mmap_lock when using VM_SHARED with MTE
KVM: arm64: Report corrupted refcount at EL2
KVM: arm64: Fix host stage-2 PGD refcount
KVM: s390: Function documentation fixes
In RHEL's gating selftests we've encountered memory corruption in the
uffd event test even with upstream kernel:
# ./userfaultfd anon 128 4
nr_pages: 32768, nr_pages_per_cpu: 32768
bounces: 3, mode: rnd racing read, userfaults: 6240 missing (6240) 14729 wp (14729)
bounces: 2, mode: racing read, userfaults: 1444 missing (1444) 28877 wp (28877)
bounces: 1, mode: rnd read, userfaults: 6055 missing (6055) 14699 wp (14699)
bounces: 0, mode: read, userfaults: 82 missing (82) 25196 wp (25196)
testing uffd-wp with pagemap (pgsize=4096): done
testing uffd-wp with pagemap (pgsize=2097152): done
testing events (fork, remap, remove): ERROR: nr 32427 memory corruption 0 1 (errno=0, line=963)
ERROR: faulting process failed (errno=0, line=1117)
It can be easily reproduced when global thp enabled, which is the
default for RHEL.
It's also known as a side effect of commit 0db282ba2c ("selftest: use
mmap instead of posix_memalign to allocate memory", 2021-07-23), which
is imho right itself on using mmap() to make sure the addresses will be
untagged even on arm.
The problem is, for each test we allocate buffers using two
allocate_area() calls. We assumed these two buffers won't affect each
other, however they could, because mmap() could have found that the two
buffers are near each other and having the same VMA flags, so they got
merged into one VMA.
It won't be a big problem if thp is not enabled, but when thp is
agressively enabled it means when initializing the src buffer it could
accidentally setup part of the dest buffer too when there's a shared THP
that overlaps the two regions. Then some of the dest buffer won't be
able to be trapped by userfaultfd missing mode, then it'll cause memory
corruption as described.
To fix it, do release_pages() after initializing the src buffer.
Since the previous two release_pages() calls are after
uffd_test_ctx_clear() which will unmap all the buffers anyway (which is
stronger than release pages; as unmap() also tear town pgtables), drop
them as they shouldn't really be anything useful.
We can mark the Fixes tag upon 0db282ba2c as it's reported to only
happen there, however the real "Fixes" IMHO should be 8ba6e86408, as
before that commit we'll always do explicit release_pages() before
registration of uffd, and 8ba6e86408 changed that logic by adding
extra unmap/map and we didn't release the pages at the right place.
Meanwhile I don't have a solid glue anyway on whether posix_memalign()
could always avoid triggering this bug, hence it's safer to attach this
fix to commit 8ba6e86408.
Link: https://lkml.kernel.org/r/20210923232512.210092-1-peterx@redhat.com
Fixes: 8ba6e86408 ("userfaultfd/selftests: reinitialize test context in each test")
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1994931
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: Li Wang <liwan@redhat.com>
Tested-by: Li Wang <liwang@redhat.com>
Reviewed-by: Axel Rasmussen <axelrasmussen@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull objtool fixes from Borislav Petkov:
- Update section headers before the respective relocations to not
trigger a safety check in elftoolchain's implementation of libelf
- Do not add garbage data to the .rela.orc_unwind_ip section
* tag 'objtool_urgent_for_v5.15_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Update section header before relocations
objtool: Check for gelf_update_rel[a] failures
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Fix 'perf test evsel' build error on !x86 architectures
- Fix libperf's test_stat_cpu mixup of CPU numbers and CPU indexes
- Output offsets for decompressed records, not just useless zeros
* tag 'perf-tools-fixes-for-v5.15-2021-10-16' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
libperf tests: Fix test_stat_cpu
libperf test evsel: Fix build error on !x86 architectures
perf report: Output non-zero offset for decompressed records
Tracing fixes for 5.15:
- Fix defined but not use warning/error for osnoise function
- Fix memory leak in event probe
- Fix memblock leak in bootconfig
- Fix the API of event probes to be like kprobes
- Added test to check removal of event probe API
- Fix recordmcount.pl for nds32 failed build
* tag 'trace-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
nds32/ftrace: Fix Error: invalid operands (*UND* and *UND* sections) for `^'
selftests/ftrace: Update test for more eprobe removal process
tracing: Fix event probe removal from dynamic events
tracing: Fix missing * in comment block
bootconfig: init: Fix memblock leak in xbc_make_cmdline()
tracing: Fix memory leak in eprobe_register()
tracing: Fix missing osnoise tracer on max_latency
In `test_no_sockets` we don't expect any sockets, indeed
check_no_sockets() prints an error and exits if `sockets` list is
not empty, so free_sock_stat() call is unnecessary since it would
only be called when the `sockets` list is empty.
This was discovered by a strange warning printed by gcc v11.2.1:
In file included from ../../include/linux/list.h:7,
from vsock_diag_test.c:18:
vsock_diag_test.c: In function ‘test_no_sockets’:
../../include/linux/kernel.h:35:45: error: array subscript ‘struct vsock_stat[0]’ is partly outside array bound
s of ‘struct list_head[1]’ [-Werror=array-bounds]
35 | const typeof(((type *)0)->member) * __mptr = (ptr); \
| ^~~~~~
../../include/linux/list.h:352:9: note: in expansion of macro ‘container_of’
352 | container_of(ptr, type, member)
| ^~~~~~~~~~~~
../../include/linux/list.h:393:9: note: in expansion of macro ‘list_entry’
393 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~~~~~~~~~
../../include/linux/list.h:522:21: note: in expansion of macro ‘list_next_entry’
522 | n = list_next_entry(pos, member); \
| ^~~~~~~~~~~~~~~
vsock_diag_test.c:325:9: note: in expansion of macro ‘list_for_each_entry_safe’
325 | list_for_each_entry_safe(st, next, sockets, list) {
| ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from vsock_diag_test.c:18:
vsock_diag_test.c:333:19: note: while referencing ‘sockets’
333 | LIST_HEAD(sockets);
| ^~~~~~~
../../include/linux/list.h:23:26: note: in definition of macro ‘LIST_HEAD’
23 | struct list_head name = LIST_HEAD_INIT(name)
It seems related to some compiler optimization and assumption
about the empty `sockets` list, since this warning is printed
only with -02 or -O3. Also removing `exit(1)` from
check_no_sockets() makes the warning disappear since in that
case free_sock_stat() can be reached also when the list is
not empty.
Reported-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20211014152045.173872-1-sgarzare@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Test that applications binding listening sockets to VRFs without
specifying TCP_MD5SIG_FLAG_IFINDEX will work as expected. This would
be broken if __tcp_md5_do_lookup always made a strict comparison on
l3index. See this email:
https://lore.kernel.org/netdev/209548b5-27d2-2059-f2e9-2148f5a0291b@gmail.com/
Applications using tcp_l3mdev_accept=1 and a single global socket (not
bound to any interface) also should have a way to specify keys that are
only for the default VRF, this is done by --force-bind-key-ifindex
without otherwise binding to a device.
Signed-off-by: Leonard Crestez <cdleonard@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
These options allow explicit control over the TCP_MD5SIG_FLAG_IFINDEX
flag instead of always setting it based on binding to an interface.
Do this by converting to getopt_long because nettest has too many
single-character flags already and getopt_long is widely used in
selftests.
Signed-off-by: Leonard Crestez <cdleonard@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from Jakub Kicinski:
"Quite calm.
The noisy DSA driver (embedded switches) changes, and adjustment to
IPv6 IOAM behavior add to diffstat's bottom line but are not scary.
Current release - regressions:
- af_unix: rename UNIX-DGRAM to UNIX to maintain backwards
compatibility
- procfs: revert "add seq_puts() statement for dev_mcast", minor
format change broke user space
Current release - new code bugs:
- dsa: fix bridge_num not getting cleared after ports leaving the
bridge, resource leak
- dsa: tag_dsa: send packets with TX fwd offload from VLAN-unaware
bridges using VID 0, prevent packet drops if pvid is removed
- dsa: mv88e6xxx: keep the pvid at 0 when VLAN-unaware, prevent HW
getting confused about station to VLAN mapping
Previous releases - regressions:
- virtio-net: fix for skb_over_panic inside big mode
- phy: do not shutdown PHYs in READY state
- dsa: mv88e6xxx: don't use PHY_DETECT on internal PHY's, fix link
LED staying lit after ifdown
- mptcp: fix possible infinite wait on recvmsg(MSG_WAITALL)
- mqprio: Correct stats in mqprio_dump_class_stats()
- ice: fix deadlock for Tx timestamp tracking flush
- stmmac: fix feature detection on old hardware
Previous releases - always broken:
- sctp: account stream padding length for reconf chunk
- icmp: fix icmp_ext_echo_iio parsing in icmp_build_probe()
- isdn: cpai: check ctr->cnr to avoid array index out of bound
- isdn: mISDN: fix sleeping function called from invalid context
- nfc: nci: fix potential UAF of rf_conn_info object
- dsa: microchip: prevent ksz_mib_read_work from kicking back in
after it's canceled in .remove and crashing
- dsa: mv88e6xxx: isolate the ATU databases of standalone and bridged
ports
- dsa: sja1105, ocelot: break circular dependency between switch and
tag drivers
- dsa: felix: improve timestamping in presence of packe loss
- mlxsw: thermal: fix out-of-bounds memory accesses
Misc:
- ipv6: ioam: move the check for undefined bits to improve
interoperability"
* tag 'net-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (60 commits)
icmp: fix icmp_ext_echo_iio parsing in icmp_build_probe
MAINTAINERS: Update the devicetree documentation path of imx fec driver
sctp: account stream padding length for reconf chunk
mlxsw: thermal: Fix out-of-bounds memory accesses
ethernet: s2io: fix setting mac address during resume
NFC: digital: fix possible memory leak in digital_in_send_sdd_req()
NFC: digital: fix possible memory leak in digital_tg_listen_mdaa()
nfc: fix error handling of nfc_proto_register()
Revert "net: procfs: add seq_puts() statement for dev_mcast"
net: encx24j600: check error in devm_regmap_init_encx24j600
net: korina: select CRC32
net: arc: select CRC32
net: dsa: felix: break at first CPU port during init and teardown
net: dsa: tag_ocelot_8021q: fix inability to inject STP BPDUs into BLOCKING ports
net: dsa: felix: purge skb from TX timestamping queue if it cannot be sent
net: dsa: tag_ocelot_8021q: break circular dependency with ocelot switch lib
net: dsa: tag_ocelot: break circular dependency with ocelot switch lib driver
net: mscc: ocelot: cross-check the sequence id from the timestamp FIFO with the skb PTP header
net: mscc: ocelot: deny TX timestamping of non-PTP packets
net: mscc: ocelot: warn when a PTP IRQ is raised for an unknown skb
...
This should not be there.
Fixes: 2de03b4523 ("selftests: netfilter: add flowtable test script")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The `cpu` argument of perf_evsel__read() must specify the cpu index.
perf_cpu_map__for_each_cpu() is for iterating the cpu number (not index)
and is thus not appropriate for use with perf_evsel__read().
So, if there is an offline CPU, the cpu number specified in the argument
may point out of range because the cpu number and the cpu index are
different.
Fix test_stat_cpu().
Testing it:
# make tests -C tools/lib/perf/
make: Entering directory '/home/nakamura/kernel_src/linux-5.15-rc4_fix/tools/lib/perf'
running static:
- running tests/test-cpumap.c...OK
- running tests/test-threadmap.c...OK
- running tests/test-evlist.c...OK
- running tests/test-evsel.c...OK
running dynamic:
- running tests/test-cpumap.c...OK
- running tests/test-threadmap.c...OK
- running tests/test-evlist.c...OK
- running tests/test-evsel.c...OK
make: Leaving directory '/home/nakamura/kernel_src/linux-5.15-rc4_fix/tools/lib/perf'
Signed-off-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20211011083704.4108720-1-nakamura.shun@fujitsu.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
The output behavior for undefined bits is now directly tested inside the bash
script. Trying to set an undefined bit should be refused.
The input behavior for undefined bits has been removed due to the fact that we
would need another sender allowed to set undefined bits.
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull Kunit fixes from Shuah Khan:
- Fixes to address the structleak plugin causing the stack frame size
to grow immensely when used with KUnit. Fixes include adding a new
makefile to disable structleak and using it from KUnit iio, device
property, thunderbolt, and bitfield tests to disable it.
- KUnit framework reference count leak in kfree_at_end
- KUnit tool fix to resolve conflict between --json and --raw_output
and generate correct test output in either case.
- kernel-doc warnings due to mismatched arg names
* tag 'linux-kselftest-kunit-fixes-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: fix kernel-doc warnings due to mismatched arg names
bitfield: build kunit tests without structleak plugin
thunderbolt: build kunit tests without structleak plugin
device property: build kunit tests without structleak plugin
iio/test-format: build kunit tests without structleak plugin
gcc-plugins/structleak: add makefile var for disabling structleak
kunit: fix reference count leak in kfree_at_end
kunit: tool: better handling of quasi-bool args (--json, --raw_output)
Add a test case that demonstrates port shadowing via UDP.
ns2 sends packet to ns1, from source port used by a udp service on the
router, ns0. Then, ns1 sends packet to ns0:service, but that ends up getting
forwarded to ns2.
Also add three test cases that demonstrate mitigations:
1. disable use of $port as source from 'unstrusted' origin
2. make the service untracked. This prevents masquerade entries
from having any effects.
3. add forced PAT via 'random' mode to translate the "wrong" sport
into an acceptable range.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pull objtool fixes from Borislav Petkov:
- Remove an extra section.len member in favour of section.sh_size
- Align .altinstructions section creation with the kernel's by creating
them with entry size of 0
- Fix objtool to convert a reloc symbol to a section offset and not to
not warn about not knowing how
* tag 'objtool_urgent_for_v5.15_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Remove redundant 'len' field from struct section
objtool: Make .altinstructions section entry size consistent
objtool: Remove reloc symbol type checks in get_alt_entry()
