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It can be convenient to put a string value into a ptwrite payload as
a quick and easy way to identify what is being printed.
To make that useful, if the Intel ptwrite payload value contains only
printable ASCII characters padded with NULLs, then print it also as a
string.
Using the example program from the "Emulated PTWRITE" section of
tools/perf/Documentation/perf-intel-pt.txt:
$ echo -n "Hello" | od -t x8
0000000 0000006f6c6c6548
0000005
$ perf record -e intel_pt//u ./eg_ptw 0x0000006f6c6c6548
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.016 MB perf.data ]
$ perf script --itrace=ew intel-pt-events.py
Intel PT Branch Trace, Power Events, Event Trace and PTWRITE
Switch In 38524/38524 [001] 24166.044995916 0/0
eg_ptw 38524/38524 [001] 24166.045380004 ptwrite jmp IP: 0 payload: 0x6f6c6c6548 Hello 56532c7ce196 perf_emulate_ptwrite+0x16 (/home/ahunter/git/work/eg_ptw)
End
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220509152400.376613-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
It can be convenient to put a string value into a ptwrite payload as
a quick and easy way to identify what is being printed.
To make that useful, if the Intel ptwrite payload value contains only
printable ASCII characters padded with NULLs, then print it also as a
string.
Using the example program from the "Emulated PTWRITE" section of
tools/perf/Documentation/perf-intel-pt.txt:
$ echo -n "Hello" | od -t x8
0000000 0000006f6c6c6548
0000005
$ perf record -e intel_pt//u ./eg_ptw 0x0000006f6c6c6548
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.016 MB perf.data ]
$ perf script --itrace=ew
eg_ptw 35563 [005] 18256.087338: ptwrite: IP: 0 payload: 0x6f6c6c6548 Hello 55e764db5196 perf_emulate_ptwrite+0x16 (/home/user/eg_ptw)
$
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220509152400.376613-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
ptwrite is an Intel x86 instruction that writes arbitrary values into an
Intel PT trace. It is not supported on all hardware, so provide an
alternative that makes use of TNT packets to convey the payload data.
TNT packets encode Taken/Not-taken conditional branch information, so
taking branches based on the payload value will encode the value into
the TNT packet. Refer to the changes to the documentation file
perf-intel-pt.txt in this patch for an example.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220509152400.376613-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Pull driver core fixes from Greg KH:
"Here is one fix, and three documentation updates for 5.18-rc7.
The fix is for the firmware loader which resolves a long-reported
problem where the credentials of the firmware loader could be set to a
userspace process without enough permissions to actually load the
firmware image. Many Android vendors have been reporting this for
quite some time.
The documentation updates are for the embargoed-hardware-issues.rst
file to add a new entry, change an existing one, and sort the list to
make changes easier in the future.
All of these have been in linux-next for a while with no reported
issues"
* tag 'driver-core-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
Documentation/process: Update ARM contact for embargoed hardware issues
Documentation/process: Add embargoed HW contact for Ampere Computing
Documentation/process: Make groups alphabetical and use tabs consistently
firmware_loader: use kernel credentials when reading firmware
Pull char/misc driver fixes from Greg KH:
"Here are two small driver fixes for 5.18-rc7 that resolve reported
problems:
- slimbus driver irq bugfix
- interconnect sync state bugfix
Both of these have been in linux-next with no reported problems"
* tag 'char-misc-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
slimbus: qcom: Fix IRQ check in qcom_slim_probe
interconnect: Restore sync state by ignoring ipa-virt in provider count
Pull tty/serial driver fixes from Greg KH:
"Here are some small tty n_gsm and serial driver fixes for 5.18-rc7
that resolve reported problems. They include:
- n_gsm fixes for reported issues
- 8250_mtk driver fixes for some platforms
- fsl_lpuart driver fix for reported problem.
- digicolor driver fix for reported problem.
All have been in linux-next for a while with no reported problems"
* tag 'tty-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
fsl_lpuart: Don't enable interrupts too early
tty: n_gsm: fix invalid gsmtty_write_room() result
tty: n_gsm: fix mux activation issues in gsm_config()
tty: n_gsm: fix buffer over-read in gsm_dlci_data()
serial: 8250_mtk: Fix register address for XON/XOFF character
serial: 8250_mtk: Make sure to select the right FEATURE_SEL
serial: 8250_mtk: Fix UART_EFR register address
tty/serial: digicolor: fix possible null-ptr-deref in digicolor_uart_probe()
Pull USB fixes from Greg KH:
"Here are some small fixes for reported issues with some USB drivers.
They include:
- xhci fixes for xhci-mtk platform driver
- typec driver fixes for reported problems.
- cdc-wdm read-stuck fix
- gadget driver fix for reported race condition
- new usb-serial driver ids
All of these have been in linux-next with no reported problems"
* tag 'usb-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: xhci-mtk: remove bandwidth budget table
usb: xhci-mtk: fix fs isoc's transfer error
usb: gadget: fix race when gadget driver register via ioctl
usb: typec: tcpci_mt6360: Update for BMC PHY setting
usb: gadget: uvc: allow for application to cleanly shutdown
usb: typec: tcpci: Don't skip cleanup in .remove() on error
usb: cdc-wdm: fix reading stuck on device close
USB: serial: qcserial: add support for Sierra Wireless EM7590
USB: serial: option: add Fibocom MA510 modem
USB: serial: option: add Fibocom L610 modem
USB: serial: pl2303: add device id for HP LM930 Display
Pull powerpc fix from Michael Ellerman:
- Fix KVM PR on 32-bit, which was broken by some MMU code refactoring.
Thanks to: Alexander Graf, and Matt Evans.
* tag 'powerpc-5.18-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
KVM: PPC: Book3S PR: Enable MSR_DR for switch_mmu_context()
Pull x86 fix from Thomas Gleixner:
"A single fix for the handling of unpopulated sub-pmd spaces.
The copy & pasta from the corresponding s390 code screwed up the
address calculation for marking the sub-pmd ranges via memset by
omitting the ALIGN_DOWN() to calculate the proper start address.
It's a mystery why this code is not generic and shared because there
is nothing architecture specific in there, but that's too intrusive
for a backportable fix"
* tag 'x86-urgent-2022-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Fix marking of unused sub-pmd ranges
Pull scheduler fix from Thomas Gleixner:
"The recent expansion of the sched switch tracepoint inserted a new
argument in the middle of the arguments. This reordering broke BPF
programs which relied on the old argument list.
While tracepoints are not considered stable ABI, it's not trivial to
make BPF cope with such a change, but it's being worked on. For now
restore the original argument order and move the new argument to the
end of the argument list"
* tag 'sched-urgent-2022-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/tracing: Append prev_state to tp args instead
Pull irq fix from Thomas Gleixner:
"A single fix for a recent (introduced in 5.16) regression in the core
interrupt code.
The consolidation of the interrupt handler invocation code added an
unconditional warning when generic_handle_domain_irq() is invoked from
outside hard interrupt context. That's overbroad as the requirement
for invoking these handlers in hard interrupt context is only required
for certain interrupt types. The subsequently called code already
contains a warning which triggers conditionally for interrupt chips
which indicate this requirement in their properties.
Remove the overbroad one"
* tag 'irq-urgent-2022-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq: Remove WARN_ON_ONCE() in generic_handle_domain_irq()
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Fix two NDEBUG warnings in 'perf bench numa'
- Fix ARM coresight `perf test` failure
- Sync linux/kvm.h with the kernel sources
- Add James and Mike as Arm64 performance events reviewers
* tag 'perf-tools-fixes-for-v5.18-2022-05-14' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
MAINTAINERS: Add James and Mike as Arm64 performance events reviewers
tools headers UAPI: Sync linux/kvm.h with the kernel sources
perf tests: Fix coresight `perf test` failure.
perf bench: Fix two numa NDEBUG warnings
Pull more drm fixes from Dave Airlie:
"Turns out I was right, some fixes hadn't made it to me yet. The vmwgfx
ones also popped up later, but all seem like bad enough things to fix.
The dma-buf, vc4 and nouveau ones are all pretty small.
The fbdev fixes are a bit more complicated: a fix to cleanup fbdev
devices properly, uncovered some use-after-free bugs in existing
drivers. Then the fix for those bugs wasn't correct. This reverts that
fix, and puts the proper fixes in place in the drivers to avoid the
use-after-frees.
This has had a fair number of eyes on it at this stage, and I'm
confident enough that it puts things in the right place, and is less
dangerous than reverting our way out of the initial change at this
stage.
fbdev:
- revert NULL deref fix that turned into a use-after-free
- prevent use-after-free in fbdev
- efifb/simplefb/vesafb: fix cleanup paths to avoid use-after-frees
dma-buf:
- fix panic in stats setup
vc4:
- fix hdmi build
nouveau:
- tegra iommu present fix
- fix leak in backlight name
vmwgfx:
- Black screen due to fences using FIFO checks on SVGA3
- Random black screens on boot due to uninitialized drm_mode_fb_cmd2
- Hangs on SVGA3 due to command buffers being used with gbobjects"
* tag 'drm-fixes-2022-05-14' of git://anongit.freedesktop.org/drm/drm:
drm/vmwgfx: Disable command buffers on svga3 without gbobjects
drm/vmwgfx: Initialize drm_mode_fb_cmd2
drm/vmwgfx: Fix fencing on SVGAv3
drm/vc4: hdmi: Fix build error for implicit function declaration
dma-buf: call dma_buf_stats_setup after dmabuf is in valid list
fbdev: efifb: Fix a use-after-free due early fb_info cleanup
drm/nouveau: Fix a potential theorical leak in nouveau_get_backlight_name()
drm/nouveau/tegra: Stop using iommu_present()
fbdev: vesafb: Cleanup fb_info in .fb_destroy rather than .remove
fbdev: efifb: Cleanup fb_info in .fb_destroy rather than .remove
fbdev: simplefb: Cleanup fb_info in .fb_destroy rather than .remove
fbdev: Prevent possible use-after-free in fb_release()
Revert "fbdev: Make fb_release() return -ENODEV if fbdev was unregistered"
Pull gfs2 fixes from Andreas Gruenbacher:
"We've finally identified commit dc732906c2 ("gfs2: Introduce flag
for glock holder auto-demotion") to be the other cause of the
filesystem corruption we've been seeing. This feature isn't strictly
necessary anymore, so we've decided to stop using it for now.
With this and the gfs_iomap_end rounding fix you've already seen
("gfs2: Fix filesystem block deallocation for short writes" in this
pull request), we're corruption free again now.
- Fix filesystem block deallocation for short writes.
- Stop using glock holder auto-demotion for now.
- Get rid of buffered writes inefficiencies due to page faults being
disabled.
- Minor other cleanups"
* tag 'gfs2-v5.18-rc4-fix3' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: Stop using glock holder auto-demotion for now
gfs2: buffered write prefaulting
gfs2: Align read and write chunks to the page cache
gfs2: Pull return value test out of should_fault_in_pages
gfs2: Clean up use of fault_in_iov_iter_{read,write}able
gfs2: Variable rename
gfs2: Fix filesystem block deallocation for short writes
We're having unresolved issues with the glock holder auto-demotion mechanism
introduced in commit dc732906c2. This mechanism was assumed to be essential
for avoiding frequent short reads and writes until commit 296abc0d91
("gfs2: No short reads or writes upon glock contention"). Since then,
when the inode glock is lost, it is simply re-acquired and the operation
is resumed. This means that apart from the performance penalty, we
might as well drop the inode glock before faulting in pages, and
re-acquire it afterwards.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
In gfs2_file_buffered_write, to increase the likelihood that all the
user memory we're trying to write will be resident in memory, carry out
the write in chunks and fault in each chunk of user memory before trying
to write it. Otherwise, some workloads will trigger frequent short
"internal" writes, causing filesystem blocks to be allocated and then
partially deallocated again when writing into holes, which is wasteful
and breaks reservations.
Neither the chunked writes nor any of the short "internal" writes are
user visible.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Pull SCSI fixes from James Bottomley:
"Four fixes, all in drivers.
These patches mosly fix error legs and exceptional conditions
(scsi_dh_alua, qla2xxx). The lpfc fixes are for coding issues with
lpfc features"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: lpfc: Correct BDE DMA address assignment for GEN_REQ_WQE
scsi: lpfc: Fix split code for FLOGI on FCoE
scsi: qla2xxx: Fix missed DMA unmap for aborted commands
scsi: scsi_dh_alua: Properly handle the ALUA transitioning state
Align the chunks that reads and writes are carried out in to the page
cache rather than the user buffers. This will be more efficient in
general, especially for allocating writes. Optimizing the case that the
user buffer is gfs2 backed isn't very useful; we only need to make sure
we won't deadlock.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Pull the return value test of the previous read or write operation out
of should_fault_in_pages(). In a following patch, we'll fault in pages
before the I/O and there will be no return value to check.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Instead of counting the number of bytes read from the filesystem,
functions gfs2_file_direct_read and gfs2_file_read_iter count the number
of bytes written into the user buffer. Conversely, functions
gfs2_file_direct_write and gfs2_file_buffered_write count the number of
bytes read from the user buffer. This is nothing but confusing, so
change the read functions to count how many bytes they have read, and
the write functions to count how many bytes they have written.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
When a write cannot be carried out in full, gfs2_iomap_end() releases
blocks that have been allocated for this write but haven't been used.
To compute the end of the allocation, gfs2_iomap_end() incorrectly
rounded the end of the attempted write down to the next block boundary
to arrive at the end of the allocation. It would have to round up, but
the end of the allocation is also available as iomap->offset +
iomap->length, so just use that instead.
In addition, use round_up() for computing the start of the unused range.
Fixes: 64bc06bb32 ("gfs2: iomap buffered write support")
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Pull ceph fix from Ilya Dryomov:
"Two fixes to properly maintain xattrs on async creates and thus
preserve SELinux context on newly created files and to avoid improper
usage of folio->private field which triggered BUG_ONs.
Both marked for stable"
* tag 'ceph-for-5.18-rc7' of https://github.com/ceph/ceph-client:
ceph: check folio PG_private bit instead of folio->private
ceph: fix setting of xattrs on async created inodes
Pull NFS client bugfixes from Trond Myklebust:
"One more pull request. There was a bug in the fix to ensure that gss-
proxy continues to work correctly after we fixed the AF_LOCAL socket
leak in the RPC code. This therefore reverts that broken patch, and
replaces it with one that works correctly.
Stable fixes:
- SUNRPC: Ensure that the gssproxy client can start in a connected
state
Bugfixes:
- Revert "SUNRPC: Ensure gss-proxy connects on setup"
- nfs: fix broken handling of the softreval mount option"
* tag 'nfs-for-5.18-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
nfs: fix broken handling of the softreval mount option
SUNRPC: Ensure that the gssproxy client can start in a connected state
Revert "SUNRPC: Ensure gss-proxy connects on setup"
Pull misc fixes from Andrew Morton:
"Seven MM fixes, three of which address issues added in the most recent
merge window, four of which are cc:stable.
Three non-MM fixes, none very serious"
[ And yes, that's a real pull request from Andrew, not me creating a
branch from emailed patches. Woo-hoo! ]
* tag 'mm-hotfixes-stable-2022-05-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
MAINTAINERS: add a mailing list for DAMON development
selftests: vm: Makefile: rename TARGETS to VMTARGETS
mm/kfence: reset PG_slab and memcg_data before freeing __kfence_pool
mailmap: add entry for martyna.szapar-mudlaw@intel.com
arm[64]/memremap: don't abuse pfn_valid() to ensure presence of linear map
procfs: prevent unprivileged processes accessing fdinfo dir
mm: mremap: fix sign for EFAULT error return value
mm/hwpoison: use pr_err() instead of dump_page() in get_any_page()
mm/huge_memory: do not overkill when splitting huge_zero_page
Revert "mm/memory-failure.c: skip huge_zero_page in memory_failure()"
Pull hwmon fixes from Guenter Roeck:
- Restrict ltq-cputemp to SOC_XWAY to fix build failure
- Add OF device ID table to tmp401 driver to enable auto-load
* tag 'hwmon-for-v5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (ltq-cputemp) restrict it to SOC_XWAY
hwmon: (tmp401) Add OF device ID table
Pull drm fixes from Dave Airlie:
"Pretty quiet week on the fixes front, 4 amdgpu and one i915 fix.
I think there might be a few misc fbdev ones outstanding, but I'll see
if they are necessary and pass them on if so.
amdgpu:
- Disable ASPM for VI boards on ADL platforms
- S0ix DCN3.1 display fix
- Resume regression fix
- Stable pstate fix
i915:
- fix for kernel memory corruption when running a lot of OpenCL tests
in parallel"
* tag 'drm-fixes-2022-05-13' of git://anongit.freedesktop.org/drm/drm:
drm/amdgpu/ctx: only reset stable pstate if the user changed it (v2)
Revert "drm/amd/pm: keep the BACO feature enabled for suspend"
drm/i915: Fix race in __i915_vma_remove_closed
drm/amd/display: undo clearing of z10 related function pointers
drm/amdgpu: vi: disable ASPM on Intel Alder Lake based systems
With very limited vram on svga3 it's difficult to handle all the surface
migrations. Without gbobjects, i.e. the ability to store surfaces in
guest mobs, there's no reason to support intermediate svga2 features,
especially because we can fall back to fb traces and svga3 will never
support those in-between features.
On svga3 we wither want to use fb traces or screen targets
(i.e. gbobjects), nothing in between. This fixes presentation on a lot
of fusion/esxi tech previews where the exposed svga3 caps haven't been
finalized yet.
Signed-off-by: Zack Rusin <zackr@vmware.com>
Fixes: 2cd80dbd35 ("drm/vmwgfx: Add basic support for SVGA3")
Cc: <stable@vger.kernel.org> # v5.14+
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220318174332.440068-5-zack@kde.org
Port of the vmwgfx to SVGAv3 lacked support for fencing. SVGAv3 removed
FIFO's and replaced them with command buffers and extra registers.
The initial version of SVGAv3 lacked support for most advanced features
(e.g. 3D) which made fences unnecessary. That is no longer the case,
especially as 3D support is being turned on.
Switch from FIFO commands and capabilities to command buffers and extra
registers to enable fences on SVGAv3.
Fixes: 2cd80dbd35 ("drm/vmwgfx: Add basic support for SVGA3")
Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220302152426.885214-5-zack@kde.org
Pull interconnect fixes from Georgi:
"interconnect fixes for v5.18-rc
This contains an additional fix for sc7180 and sdx55 platforms that helps
them to enter suspend even on devices that don't have the most recent DT
changes.
- interconnect: Restore sync state by ignoring ipa-virt in provider count
Signed-off-by: Georgi Djakov <djakov@kernel.org>"
* tag 'icc-5.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
interconnect: Restore sync state by ignoring ipa-virt in provider count
Johan writes:
USB-serial fixes for 5.18-rc7
Here are some new device ids.
All have been in linux-next with no reported issues.
* tag 'usb-serial-5.18-rc7' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: qcserial: add support for Sierra Wireless EM7590
USB: serial: option: add Fibocom MA510 modem
USB: serial: option: add Fibocom L610 modem
USB: serial: pl2303: add device id for HP LM930 Display
Pull networking fixes from Jakub Kicinski:
"Including fixes from wireless, and bluetooth.
No outstanding fires.
Current release - regressions:
- eth: atlantic: always deep reset on pm op, fix null-deref
Current release - new code bugs:
- rds: use maybe_get_net() when acquiring refcount on TCP sockets
[refinement of a previous fix]
- eth: ocelot: mark traps with a bool instead of guessing type based
on list membership
Previous releases - regressions:
- net: fix skipping features in for_each_netdev_feature()
- phy: micrel: fix null-derefs on suspend/resume and probe
- bcmgenet: check for Wake-on-LAN interrupt probe deferral
Previous releases - always broken:
- ipv4: drop dst in multicast routing path, prevent leaks
- ping: fix address binding wrt vrf
- net: fix wrong network header length when BPF protocol translation
is used on skbs with a fraglist
- bluetooth: fix the creation of hdev->name
- rfkill: uapi: fix RFKILL_IOCTL_MAX_SIZE ioctl request definition
- wifi: iwlwifi: iwl-dbg: use del_timer_sync() before freeing
- wifi: ath11k: reduce the wait time of 11d scan and hw scan while
adding an interface
- mac80211: fix rx reordering with non explicit / psmp ack policy
- mac80211: reset MBSSID parameters upon connection
- nl80211: fix races in nl80211_set_tx_bitrate_mask()
- tls: fix context leak on tls_device_down
- sched: act_pedit: really ensure the skb is writable
- batman-adv: don't skb_split skbuffs with frag_list
- eth: ocelot: fix various issues with TC actions (null-deref; bad
stats; ineffective drops; ineffective filter removal)"
* tag 'net-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (61 commits)
tls: Fix context leak on tls_device_down
net: sfc: ef10: fix memory leak in efx_ef10_mtd_probe()
net/smc: non blocking recvmsg() return -EAGAIN when no data and signal_pending
net: dsa: bcm_sf2: Fix Wake-on-LAN with mac_link_down()
mlxsw: Avoid warning during ip6gre device removal
net: bcmgenet: Check for Wake-on-LAN interrupt probe deferral
net: ethernet: mediatek: ppe: fix wrong size passed to memset()
Bluetooth: Fix the creation of hdev->name
i40e: i40e_main: fix a missing check on list iterator
net/sched: act_pedit: really ensure the skb is writable
s390/lcs: fix variable dereferenced before check
s390/ctcm: fix potential memory leak
s390/ctcm: fix variable dereferenced before check
net: atlantic: verify hw_head_ lies within TX buffer ring
net: atlantic: add check for MAX_SKB_FRAGS
net: atlantic: reduce scope of is_rsc_complete
net: atlantic: fix "frag[0] not initialized"
net: stmmac: fix missing pci_disable_device() on error in stmmac_pci_probe()
net: phy: micrel: Fix incorrect variable type in micrel
decnet: Use container_of() for struct dn_neigh casts
...
Pull cgroup fix from Tejun Heo:
"Waiman's fix for a cgroup2 cpuset bug where it could miss nodes which
were hot-added"
* 'for-5.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup/cpuset: Remove cpus_allowed/mems_allowed setup in cpuset_init_smp()
Pull fs fixes from Jan Kara:
"Three fixes that I'd still like to get to 5.18:
- add a missing sanity check in the fanotify FAN_RENAME feature
(added in 5.17, let's fix it before it gets wider usage in
userspace)
- udf fix for recently introduced filesystem corruption issue
- writeback fix for a race in inode list handling that can lead to
delayed writeback and possible dirty throttling stalls"
* tag 'fixes_for_v5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
udf: Avoid using stale lengthOfImpUse
writeback: Avoid skipping inode writeback
fanotify: do not allow setting dirent events in mask of non-dir
The commit cited below claims to fix a use-after-free condition after
tls_device_down. Apparently, the description wasn't fully accurate. The
context stayed alive, but ctx->netdev became NULL, and the offload was
torn down without a proper fallback, so a bug was present, but a
different kind of bug.
Due to misunderstanding of the issue, the original patch dropped the
refcount_dec_and_test line for the context to avoid the alleged
premature deallocation. That line has to be restored, because it matches
the refcount_inc_not_zero from the same function, otherwise the contexts
that survived tls_device_down are leaked.
This patch fixes the described issue by restoring refcount_dec_and_test.
After this change, there is no leak anymore, and the fallback to
software kTLS still works.
Fixes: c55dcdd435 ("net/tls: Fix use-after-free after the TLS device goes down and up")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20220512091830.678684-1-maximmi@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In the NIC ->probe() callback, ->mtd_probe() callback is called.
If NIC has 2 ports, ->probe() is called twice and ->mtd_probe() too.
In the ->mtd_probe(), which is efx_ef10_mtd_probe() it allocates and
initializes mtd partiion.
But mtd partition for sfc is shared data.
So that allocated mtd partition data from last called
efx_ef10_mtd_probe() will not be used.
Therefore it must be freed.
But it doesn't free a not used mtd partition data in efx_ef10_mtd_probe().
kmemleak reports:
unreferenced object 0xffff88811ddb0000 (size 63168):
comm "systemd-udevd", pid 265, jiffies 4294681048 (age 348.586s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffffa3767749>] kmalloc_order_trace+0x19/0x120
[<ffffffffa3873f0e>] __kmalloc+0x20e/0x250
[<ffffffffc041389f>] efx_ef10_mtd_probe+0x11f/0x270 [sfc]
[<ffffffffc0484c8a>] efx_pci_probe.cold.17+0x3df/0x53d [sfc]
[<ffffffffa414192c>] local_pci_probe+0xdc/0x170
[<ffffffffa4145df5>] pci_device_probe+0x235/0x680
[<ffffffffa443dd52>] really_probe+0x1c2/0x8f0
[<ffffffffa443e72b>] __driver_probe_device+0x2ab/0x460
[<ffffffffa443e92a>] driver_probe_device+0x4a/0x120
[<ffffffffa443f2ae>] __driver_attach+0x16e/0x320
[<ffffffffa4437a90>] bus_for_each_dev+0x110/0x190
[<ffffffffa443b75e>] bus_add_driver+0x39e/0x560
[<ffffffffa4440b1e>] driver_register+0x18e/0x310
[<ffffffffc02e2055>] 0xffffffffc02e2055
[<ffffffffa3001af3>] do_one_initcall+0xc3/0x450
[<ffffffffa33ca574>] do_init_module+0x1b4/0x700
Acked-by: Martin Habets <habetsm.xilinx@gmail.com>
Fixes: 8127d661e7 ("sfc: Add support for Solarflare SFC9100 family")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Link: https://lore.kernel.org/r/20220512054709.12513-1-ap420073@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
After commit 2d1f90f9ba ("net: dsa/bcm_sf2: fix incorrect usage of
state->link") the interface suspend path would call our mac_link_down()
call back which would forcibly set the link down, thus preventing
Wake-on-LAN packets from reaching our management port.
Fix this by looking at whether the port is enabled for Wake-on-LAN and
not clearing the link status in that case to let packets go through.
Fixes: 2d1f90f9ba ("net: dsa/bcm_sf2: fix incorrect usage of state->link")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220512021731.2494261-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
