now obeys KVM_CAP_HYPERV_ENFORCE_CPUID. Both the XMM arguments feature
and KVM_CAP_HYPERV_ENFORCE_CPUID are new in 5.14, and each did not know
of the other.
-----BEGIN PGP SIGNATURE-----
iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmELlMoUHHBib256aW5p
QHJlZGhhdC5jb20ACgkQv/vSX3jHroOIigf+O1JWYyfVR16qpVnkI9voa0j7aPKd
0v3Qd0ybEbBqOl2QjYFe+aJa42d8bhiMGRG7UNNxYPmW6MukxM3rWZ0wd8IvlktW
KMR/+2jPw8v8B+M44ty9y30cdW65EGxY8PXPrzSXSF9wT5v0fV8s14Yzxkc1edKM
X3OVJk1AhlRaGN9PyGl3MJxdvQG7Ci9Ep500i5vhAsdb2Azu9TzfQRVUUJ8c2BWj
PEI31Z+E0//G0oU/MiHZ5bsYCboiciiHHJxpdFpxVYN7rQ4sOxJswEsO+PpD00K3
HsZXuTXCRQyZfjbI5QlwNWpU6mZrAb3T8GVNBOP+0g3+fDNyrZzJBiCzbQ==
=bI5h
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Mostly bugfixes; plus, support for XMM arguments to Hyper-V hypercalls
now obeys KVM_CAP_HYPERV_ENFORCE_CPUID.
Both the XMM arguments feature and KVM_CAP_HYPERV_ENFORCE_CPUID are
new in 5.14, and each did not know of the other"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86/mmu: Fix per-cpu counter corruption on 32-bit builds
KVM: selftests: fix hyperv_clock test
KVM: SVM: improve the code readability for ASID management
KVM: SVM: Fix off-by-one indexing when nullifying last used SEV VMCB
KVM: Do not leak memory for duplicate debugfs directories
KVM: selftests: Test access to XMM fast hypercalls
KVM: x86: hyper-v: Check if guest is allowed to use XMM registers for hypercall input
KVM: x86: Introduce trace_kvm_hv_hypercall_done()
KVM: x86: hyper-v: Check access to hypercall before reading XMM registers
KVM: x86: accept userspace interrupt only if no event is injected
Pull pcmcia fix from Dominik Brodowski:
"Zheyu Ma found and fixed a null pointer dereference bug in the device
driver for the i82092 card reader"
* 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux:
pcmcia: i82092: fix a null pointer dereference bug
This program always prints 4096 and hangs before the patch, and always
prints 8192 and exits successfully after:
int main()
{
int pipefd[2];
for (int i = 0; i < 1025; i++)
if (pipe(pipefd) == -1)
return 1;
size_t bufsz = fcntl(pipefd[1], F_GETPIPE_SZ);
printf("%zd\n", bufsz);
char *buf = calloc(bufsz, 1);
write(pipefd[1], buf, bufsz);
read(pipefd[0], buf, bufsz-1);
write(pipefd[1], buf, 1);
}
Note that you may need to increase your RLIMIT_NOFILE before running the
program.
Fixes: 759c01142a ("pipe: limit the per-user amount of pages allocated in pipes")
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/lkml/1628086770.5rn8p04n6j.none@localhost/
Link: https://lore.kernel.org/lkml/1628127094.lxxn016tj7.none@localhost/
Signed-off-by: Alex Xu (Hello71) <alex_y_xu@yahoo.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Take a signed 'long' instead of an 'unsigned long' for the number of
pages to add/subtract to the total number of pages used by the MMU. This
fixes a zero-extension bug on 32-bit kernels that effectively corrupts
the per-cpu counter used by the shrinker.
Per-cpu counters take a signed 64-bit value on both 32-bit and 64-bit
kernels, whereas kvm_mod_used_mmu_pages() takes an unsigned long and thus
an unsigned 32-bit value on 32-bit kernels. As a result, the value used
to adjust the per-cpu counter is zero-extended (unsigned -> signed), not
sign-extended (signed -> signed), and so KVM's intended -1 gets morphed to
4294967295 and effectively corrupts the counter.
This was found by a staggering amount of sheer dumb luck when running
kvm-unit-tests on a 32-bit KVM build. The shrinker just happened to kick
in while running tests and do_shrink_slab() logged an error about trying
to free a negative number of objects. The truly lucky part is that the
kernel just happened to be a slightly stale build, as the shrinker no
longer yells about negative objects as of commit 18bb473e50 ("mm:
vmscan: shrink deferred objects proportional to priority").
vmscan: shrink_slab: mmu_shrink_scan+0x0/0x210 [kvm] negative objects to delete nr=-858993460
Fixes: bc8a3d8925 ("kvm: mmu: Fix overflow on kvm mmu page limit calculation")
Cc: stable@vger.kernel.org
Cc: Ben Gardon <bgardon@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210804214609.1096003-1-seanjc@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Seven fixes, five in drivers. The two core changes are a trivial
warning removal in scsi_scan.c and a change to rescan for capacity
when a device makes a user induced (via a write to the state variable)
offline->running transition to fix issues with device mapper.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
-----BEGIN PGP SIGNATURE-----
iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCYQq1bCYcamFtZXMuYm90
dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishZixAQC7+11n
NN5gaFI66HJk51BrtzNt9U75U1oBB3juCdEFEwD9GrJVFNn7GySSaUfLS2iUl/gN
eZJHRlvNZxmk8QqhKu8=
=ause
-----END PGP SIGNATURE-----
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Seven fixes, five in drivers.
The two core changes are a trivial warning removal in scsi_scan.c and
a change to rescan for capacity when a device makes a user induced
(via a write to the state variable) offline->running transition to fix
issues with device mapper"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: core: Fix capacity set to zero after offlinining device
scsi: sr: Return correct event when media event code is 3
scsi: ibmvfc: Fix command state accounting and stale response detection
scsi: core: Avoid printing an error if target_alloc() returns -ENXIO
scsi: scsi_dh_rdac: Avoid crash during rdac_bus_attach()
scsi: megaraid_mm: Fix end of loop tests for list_for_each_entry()
scsi: pm80xx: Fix TMF task completion race condition
- revert a patch intruducing breakage in interrupt handling in gpio-mpc8xxx
- correctly handle missing IRQs in gpio-tqmx86 by really making them optional
-----BEGIN PGP SIGNATURE-----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=6gja
-----END PGP SIGNATURE-----
Merge tag 'gpio-updates-for-v5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- revert a patch intruducing breakage in interrupt handling in
gpio-mpc8xxx
- correctly handle missing IRQs in gpio-tqmx86 by really making them
optional
* tag 'gpio-updates-for-v5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: tqmx86: really make IRQ optional
Revert "gpio: mpc8xxx: change the gpio interrupt flags."
The test was mistakenly using addr_gpa2hva on a gva and that happened
to work accidentally. Commit 106a2e766e ("KVM: selftests: Lower the
min virtual address for misc page allocations") revealed this bug.
Fixes: 2c7f76b4c4 ("selftests: kvm: Add basic Hyper-V clocksources tests", 2021-03-18)
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20210804112057.409498-1-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM SEV code uses bitmaps to manage ASID states. ASID 0 was always skipped
because it is never used by VM. Thus, in existing code, ASID value and its
bitmap postion always has an 'offset-by-1' relationship.
Both SEV and SEV-ES shares the ASID space, thus KVM uses a dynamic range
[min_asid, max_asid] to handle SEV and SEV-ES ASIDs separately.
Existing code mixes the usage of ASID value and its bitmap position by
using the same variable called 'min_asid'.
Fix the min_asid usage: ensure that its usage is consistent with its name;
allocate extra size for ASID 0 to ensure that each ASID has the same value
with its bitmap position. Add comments on ASID bitmap allocation to clarify
the size change.
Signed-off-by: Mingwei Zhang <mizhang@google.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Marc Orr <marcorr@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Alper Gun <alpergun@google.com>
Cc: Dionna Glaze <dionnaglaze@google.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Vipin Sharma <vipinsh@google.com>
Cc: Peter Gonda <pgonda@google.com>
Cc: Joerg Roedel <joro@8bytes.org>
Message-Id: <20210802180903.159381-1-mizhang@google.com>
[Fix up sev_asid_free to also index by ASID, as suggested by Sean
Christopherson, and use nr_asids in sev_cpu_init. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Use the raw ASID, not ASID-1, when nullifying the last used VMCB when
freeing an SEV ASID. The consumer, pre_sev_run(), indexes the array by
the raw ASID, thus KVM could get a false negative when checking for a
different VMCB if KVM manages to reallocate the same ASID+VMCB combo for
a new VM.
Note, this cannot cause a functional issue _in the current code_, as
pre_sev_run() also checks which pCPU last did VMRUN for the vCPU, and
last_vmentry_cpu is initialized to -1 during vCPU creation, i.e. is
guaranteed to mismatch on the first VMRUN. However, prior to commit
8a14fe4f0c ("kvm: x86: Move last_cpu into kvm_vcpu_arch as
last_vmentry_cpu"), SVM tracked pCPU on its own and zero-initialized the
last_cpu variable. Thus it's theoretically possible that older versions
of KVM could miss a TLB flush if the first VMRUN is on pCPU0 and the ASID
and VMCB exactly match those of a prior VM.
Fixes: 70cd94e60c ("KVM: SVM: VMRUN should use associated ASID when SEV is enabled")
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM creates a debugfs directory for each VM in order to store statistics
about the virtual machine. The directory name is built from the process
pid and a VM fd. While generally unique, it is possible to keep a
file descriptor alive in a way that causes duplicate directories, which
manifests as these messages:
[ 471.846235] debugfs: Directory '20245-4' with parent 'kvm' already present!
Even though this should not happen in practice, it is more or less
expected in the case of KVM for testcases that call KVM_CREATE_VM and
close the resulting file descriptor repeatedly and in parallel.
When this happens, debugfs_create_dir() returns an error but
kvm_create_vm_debugfs() goes on to allocate stat data structs which are
later leaked. The slow memory leak was spotted by syzkaller, where it
caused OOM reports.
Since the issue only affects debugfs, do a lookup before calling
debugfs_create_dir, so that the message is downgraded and rate-limited.
While at it, ensure kvm->debugfs_dentry is NULL rather than an error
if it is not created. This fixes kvm_destroy_vm_debugfs, which was not
checking IS_ERR_OR_NULL correctly.
Cc: stable@vger.kernel.org
Fixes: 536a6f88c4 ("KVM: Create debugfs dir and stat files for each VM")
Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
- Fix stm32 clk data to avoid a crash early on
- Fix a randconfig build error in HiSilicon clk driver
- Avoid an oops at boot on Qualcomm MSM8936 SoCs due to an
improper consolidation of structs
- Fix imbalanced disabling of the unused MMC clock on Tegra210
Jetson Nano
- Plug a memory leak in devm_clk_bulk_get_all() unwind path
-----BEGIN PGP SIGNATURE-----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=5bwG
-----END PGP SIGNATURE-----
Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A collection of clk driver fixes and one core clk API fix:
- Fix stm32 clk data to avoid a crash early on
- Fix a randconfig build error in HiSilicon clk driver
- Avoid an oops at boot on Qualcomm MSM8936 SoCs due to
an improper consolidation of structs
- Fix imbalanced disabling of the unused MMC clock on
Tegra210 Jetson Nano
- Plug a memory leak in devm_clk_bulk_get_all() unwind
path"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: fix leak on devm_clk_bulk_get_all() unwind
clk: tegra: Implement disable_unused() of tegra_clk_sdmmc_mux_ops
clk: qcom: smd-rpm: Fix MSM8936 RPM_SMD_PCNOC_A_CLK
clk: hisilicon: hi3559a: select RESET_HISI
clk: stm32f4: fix post divisor setup for I2S/SAI PLLs
Check that #UD is raised if bit 16 is clear in
HYPERV_CPUID_FEATURES.EDX and an 'XMM fast' hypercall is issued.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Siddharth Chandrasekaran <sidcha@amazon.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210730122625.112848-5-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
TLFS states that "Availability of the XMM fast hypercall interface is
indicated via the “Hypervisor Feature Identification” CPUID Leaf
(0x40000003, see section 2.4.4) ... Any attempt to use this interface
when the hypervisor does not indicate availability will result in a #UD
fault."
Implement the check for 'strict' mode (KVM_CAP_HYPERV_ENFORCE_CPUID).
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Siddharth Chandrasekaran <sidcha@amazon.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210730122625.112848-4-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Hypercall failures are unusual with potentially far going consequences
so it would be useful to see their results when tracing.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Siddharth Chandrasekaran <sidcha@amazon.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210730122625.112848-3-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In case guest doesn't have access to the particular hypercall we can avoid
reading XMM registers.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Siddharth Chandrasekaran <sidcha@amazon.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210730122625.112848-2-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The tqmx86 MFD driver was passing IRQ 0 for "no IRQ" in the past. This
causes warnings with newer kernels.
Prepare the gpio-tqmx86 driver for the fixed MFD driver by handling a
missing IRQ properly.
Fixes: b868db94a6 ("gpio: tqmx86: Add GPIO from for this IO controller")
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
- Revert "perf map: Fix dso->nsinfo refcounting", this makes 'perf top' to
abort, uncovering a design flaw on how namespace information is kept, the
fix is more than we can do right now, leave it for the next merge window.
- Split --dump-raw-trace by AUX records for ARM's CoreSight, fixing up the
decoding of some records.
- Fix PMU alias matching.
Thanks to James Clark and John Garry for these fixes.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQR2GiIUctdOfX2qHhGyPKLppCJ+JwUCYQaw5wAKCRCyPKLppCJ+
J0n2AP42gFxTmz5YDv1YUjaC8GPMsqp0kNYo67zq0x4QMbp7pAEAt2S5Z7kbcK9h
m57dq2wTz/lWCLCS0ccrhS+b7mjYlwk=
=zRFX
-----END PGP SIGNATURE-----
Merge tag 'perf-tools-fixes-for-v5.14-2021-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Revert "perf map: Fix dso->nsinfo refcounting", this makes 'perf top'
abort, uncovering a design flaw on how namespace information is kept.
The fix for that is more than we can do right now, leave it for the
next merge window.
- Split --dump-raw-trace by AUX records for ARM's CoreSight, fixing up
the decoding of some records.
- Fix PMU alias matching.
Thanks to James Clark and John Garry for these fixes.
* tag 'perf-tools-fixes-for-v5.14-2021-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
Revert "perf map: Fix dso->nsinfo refcounting"
perf pmu: Fix alias matching
perf cs-etm: Split --dump-raw-trace by AUX records
- Don't use r30 in VDSO code, to avoid breaking existing Go lang programs.
- Change an export symbol to allow non-GPL modules to use spinlocks again.
Thanks to: Paul Menzel, Srikar Dronamraju.
-----BEGIN PGP SIGNATURE-----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=yBq0
-----END PGP SIGNATURE-----
Merge tag 'powerpc-5.14-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Don't use r30 in VDSO code, to avoid breaking existing Go lang
programs.
- Change an export symbol to allow non-GPL modules to use spinlocks
again.
Thanks to Paul Menzel, and Srikar Dronamraju.
* tag 'powerpc-5.14-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/vdso: Don't use r30 to avoid breaking Go lang
powerpc/pseries: Fix regression while building external modules
* Fix a number of coordination bugs relating to cache flushes for
metadata writeback, cache flushes for multi-buffer log writes, and
FUA writes for single-buffer log writes.
* Fix a bug with incorrect replay of attr3 blocks.
* Fix unnecessary stalls when flushing logs to disk.
* Fix spoofing problems when recovering realtime bitmap blocks.
-----BEGIN PGP SIGNATURE-----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=pLW3
-----END PGP SIGNATURE-----
Merge tag 'xfs-5.14-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"This contains a bunch of bug fixes in XFS.
Dave and I have been busy the last couple of weeks to find and fix as
many log recovery bugs as we can find; here are the results so far. Go
fstests -g recoveryloop! ;)
- Fix a number of coordination bugs relating to cache flushes for
metadata writeback, cache flushes for multi-buffer log writes, and
FUA writes for single-buffer log writes
- Fix a bug with incorrect replay of attr3 blocks
- Fix unnecessary stalls when flushing logs to disk
- Fix spoofing problems when recovering realtime bitmap blocks"
* tag 'xfs-5.14-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: prevent spoofing of rtbitmap blocks when recovering buffers
xfs: limit iclog tail updates
xfs: need to see iclog flags in tracing
xfs: Enforce attr3 buffer recovery order
xfs: logging the on disk inode LSN can make it go backwards
xfs: avoid unnecessary waits in xfs_log_force_lsn()
xfs: log forces imply data device cache flushes
xfs: factor out forced iclog flushes
xfs: fix ordering violation between cache flushes and tail updates
xfs: fold __xlog_state_release_iclog into xlog_state_release_iclog
xfs: external logs need to flush data device
xfs: flush data dev on external log write
-----BEGIN PGP SIGNATURE-----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=qJCo
-----END PGP SIGNATURE-----
Merge tag '5.14-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Three cifs/smb3 fixes, including two for stable, and a fix for an
fallocate problem noticed by Clang"
* tag '5.14-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: add missing parsing of backupuid
smb3: rc uninitialized in one fallocate path
SMB3: fix readpage for large swap cache
and netfilter trees.
Current release - regressions:
- mac80211: fix starting aggregation sessions on mesh interfaces
Current release - new code bugs:
- sctp: send pmtu probe only if packet loss in Search Complete state
- bnxt_en: add missing periodic PHC overflow check
- devlink: fix phys_port_name of virtual port and merge error
- hns3: change the method of obtaining default ptp cycle
- can: mcba_usb_start(): add missing urb->transfer_dma initialization
Previous releases - regressions:
- set true network header for ECN decapsulation
- mlx5e: RX, avoid possible data corruption w/ relaxed ordering and LRO
- phy: re-add check for PHY_BRCM_DIS_TXCRXC_NOENRGY on the BCM54811 PHY
- sctp: fix return value check in __sctp_rcv_asconf_lookup
Previous releases - always broken:
- bpf:
- more spectre corner case fixes, introduce a BPF nospec
instruction for mitigating Spectre v4
- fix OOB read when printing XDP link fdinfo
- sockmap: fix cleanup related races
- mac80211: fix enabling 4-address mode on a sta vif after assoc
- can:
- raw: raw_setsockopt(): fix raw_rcv panic for sock UAF
- j1939: j1939_session_deactivate(): clarify lifetime of
session object, avoid UAF
- fix number of identical memory leaks in USB drivers
- tipc:
- do not blindly write skb_shinfo frags when doing decryption
- fix sleeping in tipc accept routine
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----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=sKPI
-----END PGP SIGNATURE-----
Merge tag 'net-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes for 5.14-rc4, including fixes from bpf, can, WiFi
(mac80211) and netfilter trees.
Current release - regressions:
- mac80211: fix starting aggregation sessions on mesh interfaces
Current release - new code bugs:
- sctp: send pmtu probe only if packet loss in Search Complete state
- bnxt_en: add missing periodic PHC overflow check
- devlink: fix phys_port_name of virtual port and merge error
- hns3: change the method of obtaining default ptp cycle
- can: mcba_usb_start(): add missing urb->transfer_dma initialization
Previous releases - regressions:
- set true network header for ECN decapsulation
- mlx5e: RX, avoid possible data corruption w/ relaxed ordering and
LRO
- phy: re-add check for PHY_BRCM_DIS_TXCRXC_NOENRGY on the BCM54811
PHY
- sctp: fix return value check in __sctp_rcv_asconf_lookup
Previous releases - always broken:
- bpf:
- more spectre corner case fixes, introduce a BPF nospec
instruction for mitigating Spectre v4
- fix OOB read when printing XDP link fdinfo
- sockmap: fix cleanup related races
- mac80211: fix enabling 4-address mode on a sta vif after assoc
- can:
- raw: raw_setsockopt(): fix raw_rcv panic for sock UAF
- j1939: j1939_session_deactivate(): clarify lifetime of session
object, avoid UAF
- fix number of identical memory leaks in USB drivers
- tipc:
- do not blindly write skb_shinfo frags when doing decryption
- fix sleeping in tipc accept routine"
* tag 'net-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (91 commits)
gve: Update MAINTAINERS list
can: esd_usb2: fix memory leak
can: ems_usb: fix memory leak
can: usb_8dev: fix memory leak
can: mcba_usb_start(): add missing urb->transfer_dma initialization
can: hi311x: fix a signedness bug in hi3110_cmd()
MAINTAINERS: add Yasushi SHOJI as reviewer for the Microchip CAN BUS Analyzer Tool driver
bpf: Fix leakage due to insufficient speculative store bypass mitigation
bpf: Introduce BPF nospec instruction for mitigating Spectre v4
sis900: Fix missing pci_disable_device() in probe and remove
net: let flow have same hash in two directions
nfc: nfcsim: fix use after free during module unload
tulip: windbond-840: Fix missing pci_disable_device() in probe and remove
sctp: fix return value check in __sctp_rcv_asconf_lookup
nfc: s3fwrn5: fix undefined parameter values in dev_err()
net/mlx5: Fix mlx5_vport_tbl_attr chain from u16 to u32
net/mlx5e: Fix nullptr in mlx5e_hairpin_get_mdev()
net/mlx5: Unload device upon firmware fatal error
net/mlx5e: Fix page allocation failure for ptp-RQ over SF
net/mlx5e: Fix page allocation failure for trap-RQ over SF
...
- Revert recent change of the ACPI IRQ resources handling that
attempted to improve the ACPI IRQ override selection logic, but
introduced serious regressions on some systems (Hui Wang).
- Fix up quirks for AMD platforms in the suspend-to-idle support
code so as to take upcoming systems using uPEP HID AMDI007 into
account as appropriate (Mario Limonciello).
- Fix the code retrieving DPTF attributes of the PCH FIVR so that
it agrees on the return data type with the ACPI control method
evaluated for this purpose (Srinivas Pandruvada).
-----BEGIN PGP SIGNATURE-----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=IGYg
-----END PGP SIGNATURE-----
Merge tag 'acpi-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These revert a recent IRQ resources handling modification that turned
out to be problematic, fix suspend-to-idle handling on AMD platforms
to take upcoming systems into account properly and fix the retrieval
of the DPTF attributes of the PCH FIVR.
Specifics:
- Revert recent change of the ACPI IRQ resources handling that
attempted to improve the ACPI IRQ override selection logic, but
introduced serious regressions on some systems (Hui Wang).
- Fix up quirks for AMD platforms in the suspend-to-idle support code
so as to take upcoming systems using uPEP HID AMDI007 into account
as appropriate (Mario Limonciello).
- Fix the code retrieving DPTF attributes of the PCH FIVR so that it
agrees on the return data type with the ACPI control method
evaluated for this purpose (Srinivas Pandruvada)"
* tag 'acpi-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: DPTF: Fix reading of attributes
Revert "ACPI: resources: Add checks for ACPI IRQ override"
ACPI: PM: Add support for upcoming AMD uPEP HID AMDI007
Since commit 1b6b26ae70 ("pipe: fix and clarify pipe write wakeup
logic") we have sanitized the pipe write logic, and would only try to
wake up readers if they needed it.
In particular, if the pipe already had data in it before the write,
there was no point in trying to wake up a reader, since any existing
readers must have been aware of the pre-existing data already. Doing
extraneous wakeups will only cause potential thundering herd problems.
However, it turns out that some Android libraries have misused the EPOLL
interface, and expected "edge triggered" be to "any new write will
trigger it". Even if there was no edge in sight.
Quoting Sandeep Patil:
"The commit 1b6b26ae70 ('pipe: fix and clarify pipe write wakeup
logic') changed pipe write logic to wakeup readers only if the pipe
was empty at the time of write. However, there are libraries that
relied upon the older behavior for notification scheme similar to
what's described in [1]
One such library 'realm-core'[2] is used by numerous Android
applications. The library uses a similar notification mechanism as GNU
Make but it never drains the pipe until it is full. When Android moved
to v5.10 kernel, all applications using this library stopped working.
The library has since been fixed[3] but it will be a while before all
applications incorporate the updated library"
Our regression rule for the kernel is that if applications break from
new behavior, it's a regression, even if it was because the application
did something patently wrong. Also note the original report [4] by
Michal Kerrisk about a test for this epoll behavior - but at that point
we didn't know of any actual broken use case.
So add the extraneous wakeup, to approximate the old behavior.
[ I say "approximate", because the exact old behavior was to do a wakeup
not for each write(), but for each pipe buffer chunk that was filled
in. The behavior introduced by this change is not that - this is just
"every write will cause a wakeup, whether necessary or not", which
seems to be sufficient for the broken library use. ]
It's worth noting that this adds the extraneous wakeup only for the
write side, while the read side still considers the "edge" to be purely
about reading enough from the pipe to allow further writes.
See commit f467a6a664 ("pipe: fix and clarify pipe read wakeup logic")
for the pipe read case, which remains that "only wake up if the pipe was
full, and we read something from it".
Link: https://lore.kernel.org/lkml/CAHk-=wjeG0q1vgzu4iJhW5juPkTsjTYmiqiMUYAebWW+0bam6w@mail.gmail.com/ [1]
Link: https://github.com/realm/realm-core [2]
Link: https://github.com/realm/realm-core/issues/4666 [3]
Link: https://lore.kernel.org/lkml/CAKgNAkjMBGeAwF=2MKK758BhxvW58wYTgYKB2V-gY1PwXxrH+Q@mail.gmail.com/ [4]
Link: https://lore.kernel.org/lkml/20210729222635.2937453-1-sspatil@android.com/
Reported-by: Sandeep Patil <sspatil@android.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This makes 'perf top' abort in some cases, and the right fix will
involve surgery that is too much to do at this stage, so revert for now
and fix it in the next merge window.
This reverts commit 2d6b74baa7.
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Krister Johansen <kjlx@templeofstupid.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-----BEGIN PGP SIGNATURE-----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=5FG2
-----END PGP SIGNATURE-----
Merge tag 'block-5.14-2021-07-30' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- gendisk freeing fix (Christoph)
- blk-iocost wake ordering fix (Tejun)
- tag allocation error handling fix (John)
- loop locking fix. While this isn't the prettiest fix in the world,
nobody has any good alternatives for 5.14. Something to likely
revisit for 5.15. (Tetsuo)
* tag 'block-5.14-2021-07-30' of git://git.kernel.dk/linux-block:
block: delay freeing the gendisk
blk-iocost: fix operation ordering in iocg_wake_fn()
blk-mq-sched: Fix blk_mq_sched_alloc_tags() error handling
loop: reintroduce global lock for safe loop_validate_file() traversal
-----BEGIN PGP SIGNATURE-----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=m5TP
-----END PGP SIGNATURE-----
Merge tag 'libata-5.14-2021-07-30' of git://git.kernel.dk/linux-block
Pull libata fixlets from Jens Axboe:
- A fix for PIO highmem (Christoph)
- Kill HAVE_IDE as it's now unused (Lukas)
* tag 'libata-5.14-2021-07-30' of git://git.kernel.dk/linux-block:
arch: Kconfig: clean up obsolete use of HAVE_IDE
libata: fix ata_pio_sector for CONFIG_HIGHMEM
-----BEGIN PGP SIGNATURE-----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=J0Pw
-----END PGP SIGNATURE-----
Merge tag 'for-5.14-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fix -Warray-bounds warning, to help external patchset to make it
default treewide
- fix writeable device accounting (syzbot report)
- fix fsync and log replay after a rename and inode eviction
- fix potentially lost error code when submitting multiple bios for
compressed range
* tag 'for-5.14-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: calculate number of eb pages properly in csum_tree_block
btrfs: fix rw device counting in __btrfs_free_extra_devids
btrfs: fix lost inode on log replay after mix of fsync, rename and inode eviction
btrfs: mark compressed range uptodate only if all bio succeed
Pull HID fixes from Jiri Kosina:
- resume timing fix for intel-ish driver (Ye Xiang)
- fix for using incorrect MMIO register in amd_sfh driver (Dylan
MacKenzie)
- Cintiq 24HDT / 27QHDT regression fix and touch processing fix for
Wacom driver (Jason Gerecke)
- device removal bugfix for ft260 driver (Michael Zaidman)
- other small assorted fixes
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: ft260: fix device removal due to USB disconnect
HID: wacom: Skip processing of touches with negative slot values
HID: wacom: Re-enable touch by default for Cintiq 24HDT / 27QHDT
HID: Kconfig: Fix spelling mistake "Uninterruptable" -> "Uninterruptible"
HID: apple: Add support for Keychron K1 wireless keyboard
HID: fix typo in Kconfig
HID: ft260: fix format type warning in ft260_word_show()
HID: amd_sfh: Use correct MMIO register for DMA address
HID: asus: Remove check for same LED brightness on set
HID: intel-ish-hid: use async resume function
Merge misc fixes from Andrew Morton:
"7 patches.
Subsystems affected by this patch series: lib, ocfs2, and mm (slub,
migration, and memcg)"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm/memcg: fix NULL pointer dereference in memcg_slab_free_hook()
slub: fix unreclaimable slab stat for bulk free
mm/migrate: fix NR_ISOLATED corruption on 64-bit
mm: memcontrol: fix blocking rstat function called from atomic cgroup1 thresholding code
ocfs2: issue zeroout to EOF blocks
ocfs2: fix zero out valid data
lib/test_string.c: move string selftest in the Runtime Testing menu
-----BEGIN PGP SIGNATURE-----
iQFHBAABCgAxFiEEK3kIWJt9yTYMP3ehqclaivrt76kFAmEDowsTHG1rbEBwZW5n
dXRyb25peC5kZQAKCRCpyVqK+u3vqb9iB/9mje9K6evhlrP/eHmhy50Tah5PTtUM
SNLNBvvLxtinFSvqcmUdwt6eX9hSNqvUr4MGeqoSGUVj5WnbLPenVlqgqa+/eS4b
mGVfC61RzNyloxTh/qxsqerWc2t9MO6HvC20lKHvxN0ZHleYRdWVkMxl7DUYDAvE
h/WGTvc6G1//XdGbaOEoEcZSYfLGR0G5/uWDo83vpGA1lHfvmrVdcNi/tyLqLWzz
qwatRqn5QQp/MiKN8VO3hFEAzwcqwEOcDdwdmqHZ5lN6qyUNMeDynPv3LuM01AlE
ds+AzOcPuDm/CkRbMrrow1hR+y4xfIDrXqoD3qIY2mwRxzsMdO+IJlEn
=3PEn
-----END PGP SIGNATURE-----
Merge tag 'linux-can-fixes-for-5.14-20210730' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2021-07-30
The first patch is by me and adds Yasushi SHOJI as a reviewer for the
Microchip CAN BUS Analyzer Tool driver.
Dan Carpenter's patch fixes a signedness bug in the hi311x driver.
Pavel Skripkin provides 4 patches, the first targets the mcba_usb
driver by adding the missing urb->transfer_dma initialization, which
was broken in a previous commit. The last 3 patches fix a memory leak
in the usb_8dev, ems_usb and esd_usb2 driver.
* tag 'linux-can-fixes-for-5.14-20210730' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can:
can: esd_usb2: fix memory leak
can: ems_usb: fix memory leak
can: usb_8dev: fix memory leak
can: mcba_usb_start(): add missing urb->transfer_dma initialization
can: hi311x: fix a signedness bug in hi3110_cmd()
MAINTAINERS: add Yasushi SHOJI as reviewer for the Microchip CAN BUS Analyzer Tool driver
====================
Link: https://lore.kernel.org/r/20210730070526.1699867-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When I use kfree_rcu() to free a large memory allocated by kmalloc_node(),
the following dump occurs.
BUG: kernel NULL pointer dereference, address: 0000000000000020
[...]
Oops: 0000 [#1] SMP
[...]
Workqueue: events kfree_rcu_work
RIP: 0010:__obj_to_index include/linux/slub_def.h:182 [inline]
RIP: 0010:obj_to_index include/linux/slub_def.h:191 [inline]
RIP: 0010:memcg_slab_free_hook+0x120/0x260 mm/slab.h:363
[...]
Call Trace:
kmem_cache_free_bulk+0x58/0x630 mm/slub.c:3293
kfree_bulk include/linux/slab.h:413 [inline]
kfree_rcu_work+0x1ab/0x200 kernel/rcu/tree.c:3300
process_one_work+0x207/0x530 kernel/workqueue.c:2276
worker_thread+0x320/0x610 kernel/workqueue.c:2422
kthread+0x13d/0x160 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
When kmalloc_node() a large memory, page is allocated, not slab, so when
freeing memory via kfree_rcu(), this large memory should not be used by
memcg_slab_free_hook(), because memcg_slab_free_hook() is is used for
slab.
Using page_objcgs_check() instead of page_objcgs() in
memcg_slab_free_hook() to fix this bug.
Link: https://lkml.kernel.org/r/20210728145655.274476-1-wanghai38@huawei.com
Fixes: 270c6a7146 ("mm: memcontrol/slab: Use helpers to access slab page's memcg_data")
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Roman Gushchin <guro@fb.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
SLUB uses page allocator for higher order allocations and update
unreclaimable slab stat for such allocations. At the moment, the bulk
free for SLUB does not share code with normal free code path for these
type of allocations and have missed the stat update. So, fix the stat
update by common code. The user visible impact of the bug is the
potential of inconsistent unreclaimable slab stat visible through
meminfo and vmstat.
Link: https://lkml.kernel.org/r/20210728155354.3440560-1-shakeelb@google.com
Fixes: 6a486c0ad4 ("mm, sl[ou]b: improve memory accounting")
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Roman Gushchin <guro@fb.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Similar to commit 2da9f6305f ("mm/vmscan: fix NR_ISOLATED_FILE
corruption on 64-bit") avoid using unsigned int for nr_pages. With
unsigned int type the large unsigned int converts to a large positive
signed long.
Symptoms include CMA allocations hanging forever due to
alloc_contig_range->...->isolate_migratepages_block waiting forever in
"while (unlikely(too_many_isolated(pgdat)))".
Link: https://lkml.kernel.org/r/20210728042531.359409-1-aneesh.kumar@linux.ibm.com
Fixes: c5fc5c3ae0 ("mm: migrate: account THP NUMA migration counters correctly")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Carpenter reports:
The patch 2d146aa3aa: "mm: memcontrol: switch to rstat" from Apr
29, 2021, leads to the following static checker warning:
kernel/cgroup/rstat.c:200 cgroup_rstat_flush()
warn: sleeping in atomic context
mm/memcontrol.c
3572 static unsigned long mem_cgroup_usage(struct mem_cgroup *memcg, bool swap)
3573 {
3574 unsigned long val;
3575
3576 if (mem_cgroup_is_root(memcg)) {
3577 cgroup_rstat_flush(memcg->css.cgroup);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This is from static analysis and potentially a false positive. The
problem is that mem_cgroup_usage() is called from __mem_cgroup_threshold()
which holds an rcu_read_lock(). And the cgroup_rstat_flush() function
can sleep.
3578 val = memcg_page_state(memcg, NR_FILE_PAGES) +
3579 memcg_page_state(memcg, NR_ANON_MAPPED);
3580 if (swap)
3581 val += memcg_page_state(memcg, MEMCG_SWAP);
3582 } else {
3583 if (!swap)
3584 val = page_counter_read(&memcg->memory);
3585 else
3586 val = page_counter_read(&memcg->memsw);
3587 }
3588 return val;
3589 }
__mem_cgroup_threshold() indeed holds the rcu lock. In addition, the
thresholding code is invoked during stat changes, and those contexts
have irqs disabled as well. If the lock breaking occurs inside the
flush function, it will result in a sleep from an atomic context.
Use the irqsafe flushing variant in mem_cgroup_usage() to fix this.
Link: https://lkml.kernel.org/r/20210726150019.251820-1-hannes@cmpxchg.org
Fixes: 2d146aa3aa ("mm: memcontrol: switch to rstat")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Chris Down <chris@chrisdown.name>
Reviewed-by: Rik van Riel <riel@surriel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
For punch holes in EOF blocks, fallocate used buffer write to zero the
EOF blocks in last cluster. But since ->writepage will ignore EOF
pages, those zeros will not be flushed.
This "looks" ok as commit 6bba4471f0 ("ocfs2: fix data corruption by
fallocate") will zero the EOF blocks when extend the file size, but it
isn't. The problem happened on those EOF pages, before writeback, those
pages had DIRTY flag set and all buffer_head in them also had DIRTY flag
set, when writeback run by write_cache_pages(), DIRTY flag on the page
was cleared, but DIRTY flag on the buffer_head not.
When next write happened to those EOF pages, since buffer_head already
had DIRTY flag set, it would not mark page DIRTY again. That made
writeback ignore them forever. That will cause data corruption. Even
directio write can't work because it will fail when trying to drop pages
caches before direct io, as it found the buffer_head for those pages
still had DIRTY flag set, then it will fall back to buffer io mode.
To make a summary of the issue, as writeback ingores EOF pages, once any
EOF page is generated, any write to it will only go to the page cache,
it will never be flushed to disk even file size extends and that page is
not EOF page any more. The fix is to avoid zero EOF blocks with buffer
write.
The following code snippet from qemu-img could trigger the corruption.
656 open("6b3711ae-3306-4bdd-823c-cf1c0060a095.conv.2", O_RDWR|O_DIRECT|O_CLOEXEC) = 11
...
660 fallocate(11, FALLOC_FL_KEEP_SIZE|FALLOC_FL_PUNCH_HOLE, 2275868672, 327680 <unfinished ...>
660 fallocate(11, 0, 2275868672, 327680) = 0
658 pwrite64(11, "
Link: https://lkml.kernel.org/r/20210722054923.24389-2-junxiao.bi@oracle.com
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If append-dio feature is enabled, direct-io write and fallocate could
run in parallel to extend file size, fallocate used "orig_isize" to
record i_size before taking "ip_alloc_sem", when
ocfs2_zeroout_partial_cluster() zeroout EOF blocks, i_size maybe already
extended by ocfs2_dio_end_io_write(), that will cause valid data zeroed
out.
Link: https://lkml.kernel.org/r/20210722054923.24389-1-junxiao.bi@oracle.com
Fixes: 6bba4471f0 ("ocfs2: fix data corruption by fallocate")
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Jun Piao <piaojun@huawei.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
STRING_SELFTEST is presented in the "Library routines" menu. Move it in
Kernel hacking > Kernel Testing and Coverage > Runtime Testing together
with other similar tests found in lib/
--- Runtime Testing
<*> Test functions located in the hexdump module at runtime
<*> Test string functions (NEW)
<*> Test functions located in the string_helpers module at runtime
<*> Test strscpy*() family of functions at runtime
<*> Test kstrto*() family of functions at runtime
<*> Test printf() family of functions at runtime
<*> Test scanf() family of functions at runtime
Link: https://lkml.kernel.org/r/20210719185158.190371-1-mcroce@linux.microsoft.com
Signed-off-by: Matteo Croce <mcroce@microsoft.com>
Cc: Peter Rosin <peda@axentia.se>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The team maintaining the gve driver has undergone some changes,
this updates the MAINTAINERS file accordingly.
Signed-off-by: Catherine Sullivan <csully@google.com>
Signed-off-by: Jon Olson <jonolson@google.com>
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Link: https://lore.kernel.org/r/20210729155258.442650-1-csully@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
zstd decompression uses __builtin_clz() which fails back to __clzdi2()
when the kernel is built for older hardware like z900. This leads to
build failures like the following:
s390x-11.1.0-ld: /devel/src/kernel/arch/s390/boot/compressed/../../../../lib/zstd/bitstream.h:148: undefined reference to `__clzdi2'
Fix that by optionally including lib/clz_ctz.c into the decompressor.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 7b034d9c1b ("s390/boot: add zstd support")
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Link: https://lore.kernel.org/r/patch-1.thread-f0f589.git-f0f58936888f.your-ad-here.call-01627564869-ext-2765@work.hours
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
The arch-specific Kconfig files use HAVE_IDE to indicate if IDE is
supported.
As IDE support and the HAVE_IDE config vanishes with commit b7fb14d3ac
("ide: remove the legacy ide driver"), there is no need to mention
HAVE_IDE in all those arch-specific Kconfig files.
The issue was identified with ./scripts/checkkconfigsymbols.py.
Fixes: b7fb14d3ac ("ide: remove the legacy ide driver")
Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20210728182115.4401-1-lukas.bulwahn@gmail.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Once an exception has been injected, any side effects related to
the exception (such as setting CR2 or DR6) have been taked place.
Therefore, once KVM sets the VM-entry interruption information
field or the AMD EVENTINJ field, the next VM-entry must deliver that
exception.
Pending interrupts are processed after injected exceptions, so
in theory it would not be a problem to use KVM_INTERRUPT when
an injected exception is present. However, DOSEMU is using
run->ready_for_interrupt_injection to detect interrupt windows
and then using KVM_SET_SREGS/KVM_SET_REGS to inject the
interrupt manually. For this to work, the interrupt window
must be delayed after the completion of the previous event
injection.
Cc: stable@vger.kernel.org
Reported-by: Stas Sergeev <stsp2@yandex.ru>
Tested-by: Stas Sergeev <stsp2@yandex.ru>
Fixes: 71cc849b70 ("KVM: x86: Fix split-irqchip vs interrupt injection window request")
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Building VIDEO_ATMEL_ISC as module and VIDEO_ATMEL_XISC as built-in
(or viceversa) causes build errors:
or1k-linux-ld: drivers/media/platform/atmel/atmel-isc-base.o: in function `isc_async_complete':
atmel-isc-base.c:(.text+0x40d0): undefined reference to `__this_module'
or1k-linux-ld: atmel-isc-base.c:(.text+0x40f0): undefined reference to `__this_module'
or1k-linux-ld: drivers/media/platform/atmel/atmel-isc-base.o:(.rodata+0x390): undefined reference to `__this_module'
or1k-linux-ld: drivers/media/platform/atmel/atmel-isc-base.o:(__param+0x4): undefined reference to `__this_module'
or1k-linux-ld: drivers/media/platform/atmel/atmel-isc-base.o:(__param+0x18): undefined reference to `__this_module'
This is caused by the file atmel-isc-base.c which is common code between
the two drivers.
The solution is to create another Kconfig symbol that is automatically
selected and generates the module atmel-isc-base.ko. This module can be
loaded when both drivers are modules, or built-in when at least one of them
is built-in.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: c9aa973884 ("media: atmel: atmel-isc: add microchip-xisc driver")
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
