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since 889b3c1245, CONFIG_OPTIMIZE_INLINING
is removed entirely and inline is always defined to `inline __gnu_inline
__inline_maybe_unused notrace` in compiler_types.h
Besides, undef inline here also means it never use
__attribute__((__gnu_inline__)), so `extern inline` function can never
be defined header files, otherwise multiple definition errors will
happen, e.g. if multiple translation units use alpha/include/asm/pal.h
will report multiple definitions, because there are many extern inline
function definitions in this header.
``` c
extern inline TYPE NAME(void) \
{ \
register TYPE __r0 __asm__("$0"); \
__asm__ __volatile__( \
...
```
Ofc, it is also ok to remove `extern` in `extern inline` here, then all
of iso c99 and gnuc99/89 are ok, but there are also other alpha headers
have such function definitions.
Signed-off-by: chenli <chenli@uniontech.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Matt Turner <mattst88@gmail.com>
When building an alpha kernel with mpi set as module, I hit this build
error:
ERROR: "__udiv_qrnnd" [lib/mpi/mpi.ko] undefined!
make[2]: *** [scripts/Makefile.modpost:92: __modpost] Error 1
make[1]: *** [Makefile:1266: modules] Error 2
This is due to __udiv_qrnnd not exported.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
DEFINE_CLK() makes the variable name be clk_xyz, so variable
'pll' should instead be 'clk_pll'.
In file included from ../arch/m68k/coldfire/m525x.c:12:
../arch/m68k/coldfire/m525x.c:29:30: error: 'pll' undeclared here (not in a function)
29 | CLKDEV_INIT(NULL, "pll.0", &pll),
| ^~~
../include/linux/clkdev.h:30:10: note: in definition of macro 'CLKDEV_INIT'
30 | .clk = c, \
| ^
In file included from ../arch/m68k/coldfire/m525x.c:21:
../arch/m68k/include/asm/mcfclk.h:43:27: warning: 'clk_pll' defined but not used [-Wunused-variable]
43 | static struct clk clk_##clk_ref = { \
| ^~~~
../arch/m68k/coldfire/m525x.c:25:1: note: in expansion of macro 'DEFINE_CLK'
25 | DEFINE_CLK(pll, "pll.0", MCF_CLK);
| ^~~~~~~~~~
Fixes: 63aadb7766 ("m68k: coldfire: use clkdev_lookup on most coldfire")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
Cc: uclinux-dev@uclinux.org
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
Xin Long says:
====================
sctp: improve the pmtu probe in Search Complete state
Timo recently suggested to use the loss of (data) packets as
indication to send pmtu probe for Search Complete state, which
should also be implied by RFC8899. This patchset is to change
the current one that is doing probe with current pmtu all the
time.
v1->v2:
- see Patch 2/2.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch is to introduce last_rtx_chunks into sctp_transport to detect
if there's any packet retransmission/loss happened by checking against
asoc's rtx_data_chunks in sctp_transport_pl_send().
If there is, namely, transport->last_rtx_chunks != asoc->rtx_data_chunks,
the pmtu probe will be sent out. Otherwise, increment the pl.raise_count
and return when it's in Search Complete state.
With this patch, if in Search Complete state, which is a long period, it
doesn't need to keep probing the current pmtu unless there's data packet
loss. This will save quite some traffic.
v1->v2:
- add the missing Fixes tag.
Fixes: 0dac127c05 ("sctp: do black hole detection in search complete state")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch does 3 things:
- make sctp_transport_pl_send() and sctp_transport_pl_recv()
return bool type to decide if more probe is needed to send.
- pr_debug() only when probe is really needed to send.
- count pl.raise_count in sctp_transport_pl_send() instead of
sctp_transport_pl_recv(), and it's only incremented for the
1st probe for the same size.
These are preparations for the next patch to make probes happen
only when there's packet loss in Search Complete state.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The list_for_each_entry() iterator, "vlan" in this code, can never be
NULL so the warning will never be printed.
Signed-off-by: Harshvardhan Jha <harshvardhan.jha@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
gcc doesn't care, but clang quite reasonably pointed out that the recent
commit e9ba16e68c ("smpboot: Mark idle_init() as __always_inlined to
work around aggressive compiler un-inlining") did some really odd
things:
kernel/smpboot.c:50:20: warning: duplicate 'inline' declaration specifier [-Wduplicate-decl-specifier]
static inline void __always_inline idle_init(unsigned int cpu)
^
which not only has that duplicate inlining specifier, but the new
__always_inline was put in the wrong place of the function definition.
We put the storage class specifiers (ie things like "static" and
"extern") first, and the type information after that. And while the
compiler may not care, we put the inline specifier before the types.
So it should be just
static __always_inline void idle_init(unsigned int cpu)
instead.
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Fix guest to host memory corruption in H_RTAS due to missing nargs check.
- Fix guest triggerable host crashes due to bad handling of nested guest TM state.
- Fix possible crashes due to incorrect reference counting in kvm_arch_vcpu_ioctl().
- Two commits fixing some regressions in KVM transactional memory handling introduced by
the recent rework of the KVM code.
Thanks to: Nicholas Piggin, Alexey Kardashevskiy, Michael Neuling.
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Merge tag 'powerpc-5.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix guest to host memory corruption in H_RTAS due to missing nargs
check.
- Fix guest triggerable host crashes due to bad handling of nested
guest TM state.
- Fix possible crashes due to incorrect reference counting in
kvm_arch_vcpu_ioctl().
- Two commits fixing some regressions in KVM transactional memory
handling introduced by the recent rework of the KVM code.
Thanks to Nicholas Piggin, Alexey Kardashevskiy, and Michael Neuling.
* tag 'powerpc-5.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state
KVM: PPC: Book3S: Fix H_RTAS rets buffer overflow
KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak
KVM: PPC: Book3S: Fix CONFIG_TRANSACTIONAL_MEM=n crash
KVM: PPC: Book3S HV P9: Fix guest TM support
- Plug a race between rearm and process tick in the posix CPU timers code
- Make the optimization to avoid recalculation of the next timer interrupt
work correctly when there are no timers pending.
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Merge tag 'timers-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"A small set of timer related fixes:
- Plug a race between rearm and process tick in the posix CPU timers
code
- Make the optimization to avoid recalculation of the next timer
interrupt work correctly when there are no timers pending"
* tag 'timers-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timers: Fix get_next_timer_interrupt() with no timers pending
posix-cpu-timers: Fix rearm racing against process tick
un-inlining which results in a section mismatch.
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Merge tag 'locking-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 jump label fix from Thomas Gleixner:
"A single fix for jump labels to prevent the compiler from agressive
un-inlining which results in a section mismatch"
* tag 'locking-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
jump_labels: Mark __jump_label_transform() as __always_inlined to work around aggressive compiler un-inlining
- Prevent memblock and I/O reserved resources to get out of sync when EFI
memreserve is in use.
- Don't claim a non-existing table is invalid
- Don't warn when firmware memory is already reserved correctly
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Merge tag 'efi-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Thomas Gleixner:
"A set of EFI fixes:
- Prevent memblock and I/O reserved resources to get out of sync when
EFI memreserve is in use.
- Don't claim a non-existing table is invalid
- Don't warn when firmware memory is already reserved correctly"
* tag 'efi-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/mokvar: Reserve the table only if it is in boot services data
efi/libstub: Fix the efi_load_initrd function description
firmware/efi: Tell memblock about EFI iomem reservations
efi/tpm: Differentiate missing and invalid final event log table.
causes a section mismatch.
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Merge tag 'core-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core fix from Thomas Gleixner:
"A single update for the boot code to prevent aggressive un-inlining
which causes a section mismatch"
* tag 'core-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
smpboot: Mark idle_init() as __always_inlined to work around aggressive compiler un-inlining
The error code is missing in this code scenario, add the error code
'-EINVAL' to the return value 'err'.
Eliminate the follow smatch warning:
drivers/net/ethernet/mellanox/mlx4/main.c:3538 mlx4_load_one() warn:
missing error code 'err'.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Fixes: 7ae0e400cd ("net/mlx4_core: Flexible (asymmetric) allocation of EQs and MSI-X vectors for PF/VFs")
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Restore PHY_ID_BCM54811 accidently removed by commit 5d4358ede8.
Fixes: 5d4358ede8 ("net: phy: broadcom: Allow BCM54210E to configure APD")
Signed-off-by: Kevin Lo <kevlo@kevlo.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Merge commit cited in fixes tag was incorrect. Due to it phys_port_name
of the virtual port resulted in incorrect name.
Also the phys_port_name of the physical port was written twice due to
the merge error.
Fix it by removing the old code and inserting back the misplaced code.
Related commits of interest in net and net-next branches that resulted
in merge conflict are:
in net-next branch:
commit f285f37cb1 ("devlink: append split port number to the port name")
in net branch:
commit b28d8f0c25 ("devlink: Correct VIRTUAL port to not have phys_port attributes")
Fixes: 126285651b ("Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net")
Signed-off-by: Parav Pandit <parav@nvidia.com>
Reported-by: Niklas Schnelle <schnelle@linux.ibm.com>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Avoid configure backpressure for LBK links as they
don't support it and enable lmacs before configuration
pause frames.
Fixes: 75f3627099 ("octeontx2-pf: Support to enable/disable pause frames via ethtool")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In the existing code while changing the number of TX/RX
queues using ethtool the PF/VF interface resources are
freed and reallocated (otx2_stop and otx2_open is called)
if the device is in running state. If any resource allocation
fails in otx2_open, driver free already allocated resources
and return. But again, when the number of queues changes
as the device state still running oxt2_stop is called.
In which we try to free already freed resources leading
to driver crash.
This patch fixes the issue by setting the INTF_DOWN flag on
error and free the resources in otx2_stop only if the flag is
not set.
Fixes: 50fe6c02e5 ("octeontx2-pf: Register and handle link notifications")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <Sunil.Goutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently PKINDs are not assigned to LBK channels.
The default value of LBK_CHX_PKIND (channel to PKIND mapping) register
is zero, which is resulting in a overlap of pkind between LBK and CGX
LMACs. When KPU1 parser config is modified when PTP timestamping is
enabled on the CGX LMAC interface it is impacting traffic on LBK
interfaces as well.
This patch fixes the issue by reserving the PKIND#0 for LBK devices.
CGX mapped PF pkind starts from 1 and also fixes the max pkind available.
Fixes: 421572175b ("octeontx2-af: Support to enable/disable HW timestamping")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag '5.14-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Five cifs/smb3 fixes, including a DFS failover fix, two fallocate
fixes, and two trivial coverity cleanups"
* tag '5.14-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix fallocate when trying to allocate a hole.
CIFS: Clarify SMB1 code for POSIX delete file
CIFS: Clarify SMB1 code for POSIX Create
cifs: support share failover when remounting
cifs: only write 64kb at a time when fallocating a small region of a file
* A fix to properly set the memory size, which fixes 32-bit systems.
* A fix to allow the initrd to load anywhere in memory, rather that
restricting it to the first 256MiB.
* A fix for the mem= parameter on 64-bit systems, to properly account
for the maximum supported memory now that the kernel is outside the
linear map.
* A fix to avoid installing mappings into the last 4KiB of memory, which
conflicts with error values.
* A fix to avoid the stack from being freed while it is being walked.
* A handful of fixes to the new copy to/from user routines.
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Merge tag 'riscv-for-linus-5.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- properly set the memory size, which fixes 32-bit systems
- allow initrd to load anywhere in memory, rather that restricting it
to the first 256MiB
- fix the 'mem=' parameter on 64-bit systems to properly account for
the maximum supported memory now that the kernel is outside the
linear map
- avoid installing mappings into the last 4KiB of memory, which
conflicts with error values
- avoid the stack from being freed while it is being walked
- a handful of fixes to the new copy to/from user routines
* tag 'riscv-for-linus-5.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: __asm_copy_to-from_user: Fix: Typos in comments
riscv: __asm_copy_to-from_user: Remove unnecessary size check
riscv: __asm_copy_to-from_user: Fix: fail on RV32
riscv: __asm_copy_to-from_user: Fix: overrun copy
riscv: stacktrace: pin the task's stack in get_wchan
riscv: Make sure the kernel mapping does not overlap with IS_ERR_VALUE
riscv: Make sure the linear mapping does not use the kernel mapping
riscv: Fix memory_limit for 64-bit kernel
RISC-V: load initrd wherever it fits into memory
riscv: Fix 32-bit RISC-V boot failure
Commit 71f6428332 ("ACPI: utils: Fix reference counting in
for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer
that was possibly NULL. That fails miserably, because that helper
inline function is not set up to handle that case.
Just make acpi_dev_put() silently accept a NULL pointer, rather than
calling down to put_device() with an invalid offset off that NULL
pointer.
Link: https://lore.kernel.org/lkml/a607c149-6bf6-0fd0-0e31-100378504da2@kernel.dk/
Reported-and-tested-by: Jens Axboe <axboe@kernel.dk>
Tested-by: Daniel Scally <djrscally@gmail.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Four fixes, all in drivers, all of which can lead to user visible
problems in certain situations.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Four fixes, all in drivers, all of which can lead to user visible
problems in certain situations"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: target: Fix NULL dereference on XCOPY completion
scsi: mpt3sas: Transition IOC to Ready state during shutdown
scsi: target: Fix protect handling in WRITE SAME(32)
scsi: iscsi: Fix iface sysfs attr detection
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Merge tag 'block-5.14-2021-07-24' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request (Christoph):
- tracing fix (Keith Busch)
- fix multipath head refcounting (Hannes Reinecke)
- Write Zeroes vs PI fix (me)
- drop a bogus WARN_ON (Zhihao Cheng)
- Increase max blk-cgroup policy size, now that mq-deadline
uses it too (Oleksandr)
* tag 'block-5.14-2021-07-24' of git://git.kernel.dk/linux-block:
nvme: set the PRACT bit when using Write Zeroes with T10 PI
nvme: fix nvme_setup_command metadata trace event
nvme: fix refcounting imbalance when all paths are down
nvme-pci: don't WARN_ON in nvme_reset_work if ctrl.state is not RESETTING
block: increase BLKCG_MAX_POLS
Pull i2c fixes from Wolfram Sang:
"Two bugfixes for the I2C subsystem"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: mpc: Poll for MCF
misc: eeprom: at24: Always append device id even if label property is set.
Merge misc mm fixes from Andrew Morton:
"15 patches.
VM subsystems affected by this patch series: userfaultfd, kfence,
highmem, pagealloc, memblock, pagecache, secretmem, pagemap, and
hugetlbfs"
* akpm:
hugetlbfs: fix mount mode command line processing
mm: fix the deadlock in finish_fault()
mm: mmap_lock: fix disabling preemption directly
mm/secretmem: wire up ->set_page_dirty
writeback, cgroup: do not reparent dax inodes
writeback, cgroup: remove wb from offline list before releasing refcnt
memblock: make for_each_mem_range() traverse MEMBLOCK_HOTPLUG regions
mm: page_alloc: fix page_poison=1 / INIT_ON_ALLOC_DEFAULT_ON interaction
mm: use kmap_local_page in memzero_page
mm: call flush_dcache_page() in memcpy_to_page() and memzero_page()
kfence: skip all GFP_ZONEMASK allocations
kfence: move the size check to the beginning of __kfence_alloc()
kfence: defer kfence_test_init to ensure that kunit debugfs is created
selftest: use mmap instead of posix_memalign to allocate memory
userfaultfd: do not untag user pointers
We use the timecounter APIs for the 48-bit PHC and packet timestamps.
We must periodically update the timecounter at roughly half the
overflow interval. The overflow interval is about 78 hours, so
update it every 19 hours (1/4 interval) for some extra margins.
Fixes: 390862f45c ("bnxt_en: Get the full 48-bit hardware timestamp periodically")
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
One skb's skb_shinfo frags are not writable, and they can be shared with
other skbs' like by pskb_copy(). To write the frags may cause other skb's
data crash.
So before doing en/decryption, skb_cow_data() should always be called for
a cloned or nonlinear skb if req dst is using the same sg as req src.
While at it, the likely branch can be removed, as it will be covered
by skb_cow_data().
Note that esp_input() has the same issue, and I will fix it in another
patch. tipc_aead_encrypt() doesn't have this issue, as it only processes
linear data in the unlikely branch.
Fixes: fc1b6d6de2 ("tipc: introduce TIPC encryption & authentication")
Reported-by: Shuang Li <shuali@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'linux-can-fixes-for-5.14-20210724' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
linux-can-fixes-for-5.14-20210724
Marc Kleine-Budde says:
====================
pull-request: can 2021-07-24
this is a pull request of 6 patches for net/master.
The first patch is by Joakim Zhang targets the imx8mp device tree. It
removes the imx6 fallback from the flexcan binding, as the imx6 is not
compatible with the imx8mp.
Ziyang Xuan contributes a patch to fix a use-after-free in the CAN
raw's raw_setsockopt().
The next two patches target the CAN J1939 protocol. The first one is
by Oleksij Rempel and clarifies the lifetime of session object in
j1939_session_deactivate(). Zhang Changzhong's patch fixes the timeout
value between consecutive TP.DT.
Stephane Grosjean contributes a patch for the peak_usb driver to fix
reading of the rxerr/txerr values.
The last patch is by me for the mcp251xfd driver. It stops the
timestamp worker in case of a fatal error in the IRQ handler.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
In case an error occurred in the IRQ handler, the chip status is
dumped via devcoredump and all IRQs are disabled, but the chip stays
powered for further analysis.
The chip is in an undefined state and will not receive any CAN frames,
so shut down the timestamping worker, which reads the TBC register
regularly, too. This avoids any CRC read error messages if there is a
communication problem with the chip.
Fixes: efd8d98dfb ("can: mcp251xfd: add HW timestamp infrastructure")
Link: https://lore.kernel.org/r/20210724155131.471303-1-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This patch fixes an incorrect way of reading error counters in messages
received for this purpose from the PCAN-USB interface. These messages
inform about the increase or decrease of the error counters, whose values
are placed in bytes 1 and 2 of the message data (not 0 and 1).
Fixes: ea8b33bde7 ("can: pcan_usb: add support of rxerr/txerr counters")
Link: https://lore.kernel.org/r/20210625130931.27438-4-s.grosjean@peak-system.com
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
For receive side, the max time interval between two consecutive TP.DT
should be 750ms.
Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol")
Link: https://lore.kernel.org/r/1625569210-47506-1-git-send-email-zhangchangzhong@huawei.com
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
The j1939_session_deactivate() is decrementing the session ref-count and
potentially can free() the session. This would cause use-after-free
situation.
However, the code calling j1939_session_deactivate() does always hold
another reference to the session, so that it would not be free()ed in
this code path.
This patch adds a comment to make this clear and a WARN_ON, to ensure
that future changes will not violate this requirement. Further this
patch avoids dereferencing the session pointer as a precaution to avoid
use-after-free if the session is actually free()ed.
Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol")
Link: https://lore.kernel.org/r/20210714111602.24021-1-o.rempel@pengutronix.de
Reported-by: Xiaochen Zou <xzou017@ucr.edu>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
FlexCAN on i.MX8MP is not derived from i.MX6Q, instead reuses from
i.MX8QM with extra ECC added and default is enabled, so that the FlexCAN
would be put into freeze mode without FLEXCAN_QUIRK_DISABLE_MECR quirk.
This patch removes "fsl,imx6q-flexcan" fallback compatible string since
it's not compatible with the i.MX6Q.
Link: https://lore.kernel.org/r/20210719073437.32078-1-qiangqing.zhang@nxp.com
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Clean up:
The size of 0 will be evaluated in the next step. Not
required here.
Signed-off-by: Akira Tsukamoto <akira.tsukamoto@gmail.com>
Fixes: ca6eaaa210 ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall")
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Had a bug when converting bytes to bits when the cpu was rv32.
The a3 contains the number of bytes and multiple of 8
would be the bits. The LGREG is holding 2 for RV32 and 3 for
RV32, so to achieve multiple of 8 it must always be constant 3.
The 2 was mistakenly used for rv32.
Signed-off-by: Akira Tsukamoto <akira.tsukamoto@gmail.com>
Fixes: ca6eaaa210 ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall")
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
There were two causes for the overrun memory access.
The threshold size was too small.
The aligning dst require one SZREG and unrolling word copy requires
8*SZREG, total have to be at least 9*SZREG.
Inside the unrolling copy, the subtracting -(8*SZREG-1) would make
iteration happening one extra loop. Proper value is -(8*SZREG).
Signed-off-by: Akira Tsukamoto <akira.tsukamoto@gmail.com>
Fixes: ca6eaaa210 ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall")
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
In commit 32021982a3 ("hugetlbfs: Convert to fs_context") processing
of the mount mode string was changed from match_octal() to fsparam_u32.
This changed existing behavior as match_octal does not require octal
values to have a '0' prefix, but fsparam_u32 does.
Use fsparam_u32oct which provides the same behavior as match_octal.
Link: https://lkml.kernel.org/r/20210721183326.102716-1-mike.kravetz@oracle.com
Fixes: 32021982a3 ("hugetlbfs: Convert to fs_context")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reported-by: Dennis Camera <bugs+kernel.org@dtnr.ch>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 63f3655f95 ("mm, memcg: fix reclaim deadlock with writeback")
fix the following ABBA deadlock by pre-allocating the pte page table
without holding the page lock.
lock_page(A)
SetPageWriteback(A)
unlock_page(A)
lock_page(B)
lock_page(B)
pte_alloc_one
shrink_page_list
wait_on_page_writeback(A)
SetPageWriteback(B)
unlock_page(B)
# flush A, B to clear the writeback
Commit f9ce0be71d ("mm: Cleanup faultaround and finish_fault()
codepaths") reworked the relevant code but ignored this race. This will
cause the deadlock above to appear again, so fix it.
Link: https://lkml.kernel.org/r/20210721074849.57004-1-zhengqi.arch@bytedance.com
Fixes: f9ce0be71d ("mm: Cleanup faultaround and finish_fault() codepaths")
Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 832b507253 ("mm: mmap_lock: use local locks instead of
disabling preemption") fixed a bug by using local locks.
But commit d01079f3d0 ("mm/mmap_lock: remove dead code for
!CONFIG_TRACING configurations") changed those lines back to the
original version.
I guess it was introduced by fixing conflicts.
Link: https://lkml.kernel.org/r/20210720074228.76342-1-songmuchun@bytedance.com
Fixes: d01079f3d0 ("mm/mmap_lock: remove dead code for !CONFIG_TRACING configurations")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta@ionos.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Make secretmem up to date with the changes done in commit 0af573780b
("mm: require ->set_page_dirty to be explicitly wired up") so that
unconditional call to this method won't cause crashes.
Link: https://lkml.kernel.org/r/20210716063933.31633-1-rppt@kernel.org
Fixes: 0af573780b ("mm: require ->set_page_dirty to be explicitly wired up")
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
