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The current behavior is to accept any strings as inputs, this results in
an inconsistent result where an unexisting scheduler can be set:
# sysctl -w net.mptcp.scheduler=notdefault
net.mptcp.scheduler = notdefault
This patch changes this behavior by checking for existing scheduler
before accepting the input.
Fixes: e3b2870b6d ("mptcp: add a new sysctl scheduler")
Cc: stable@vger.kernel.org
Signed-off-by: Gregory Detal <gregory.detal@gmail.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Tested-by: Geliang Tang <geliang@kernel.org>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240506-upstream-net-20240506-mptcp-sched-exist-v1-1-2ed1529e521e@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 7e8cdc9714 ("nfc: Add KCOV annotations") added
kcov_remote_start_common()/kcov_remote_stop() pair into nci_rx_work(),
with an assumption that kcov_remote_stop() is called upon continue of
the for loop. But commit d24b03535e ("nfc: nci: Fix uninit-value in
nci_dev_up and nci_ntf_packet") forgot to call kcov_remote_stop() before
break of the for loop.
Reported-by: syzbot <syzbot+0438378d6f157baae1a2@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=0438378d6f157baae1a2
Fixes: d24b03535e ("nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet")
Suggested-by: Andrey Konovalov <andreyknvl@gmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/6d10f829-5a0c-405a-b39a-d7266f3a1a0b@I-love.SAKURA.ne.jp
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 1f2bcb8c8c ("gpio: protect the descriptor label with SRCU")
caused a massive drop in performance of requesting GPIO lines due to the
call to synchronize_srcu() on each label change. Rework the code to not
wait until all read-only users are done with reading the label but
instead atomically replace the label pointer and schedule its release
after all read-only critical sections are done.
To that end wrap the descriptor label in a struct that also contains the
rcu_head struct required for deferring tasks using call_srcu() and stop
using kstrdup_const() as we're required to allocate memory anyway. Just
allocate enough for the label string and rcu_head in one go.
Reported-by: Neil Armstrong <neil.armstrong@linaro.org>
Closes: https://lore.kernel.org/linux-gpio/CAMRc=Mfig2oooDQYTqo23W3PXSdzhVO4p=G4+P8y1ppBOrkrJQ@mail.gmail.com/
Fixes: 1f2bcb8c8c ("gpio: protect the descriptor label with SRCU")
Suggested-by: "Paul E. McKenney" <paulmck@kernel.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Acked-by: "Paul E. McKenney" <paulmck@kernel.org>
Link: https://lore.kernel.org/r/20240507121346.16969-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
When deleting many controllers one-by-one, it takes a very
long time as these work elements may serialize as they are
scheduled on the executing cpu instead of spreading. In general
nvmet_wq can definitely be used for long standing work elements
so its better to make it unbound regardless.
Signed-off-by: Sagi Grimberg <sagi.grimberg@vastdata.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
bch2_write_super() was looping over online devices multiple times -
dropping and retaking io_ref each time.
This meant it could race with device removal; it could increment the
sequence number on a device but fail to write it - and then if the
device was re-added, it would get confused the next time around thinking
a superblock write was silently dropped.
Fix this by taking io_ref once, and stashing pointers to online devices
in a darray.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Sandisk SN530 NVMe drives have broken MSIs. On systems without MSI-X
support, all commands time out resulting in the following message:
nvme nvme0: I/O tag 12 (100c) QID 0 timeout, completion polled
These timeouts cause the boot to take an excessively-long time (over 20
minutes) while the initial command queue is flushed.
Address this by adding a quirk for drives with buggy MSIs. The lspci
output for this device (recorded on a system with MSI-X support) is:
02:00.0 Non-Volatile memory controller: Sandisk Corp Device 5008 (rev 01) (prog-if 02 [NVM Express])
Subsystem: Sandisk Corp Device 5008
Flags: bus master, fast devsel, latency 0, IRQ 16, NUMA node 0
Memory at f7e00000 (64-bit, non-prefetchable) [size=16K]
Memory at f7e04000 (64-bit, non-prefetchable) [size=256]
Capabilities: [80] Power Management version 3
Capabilities: [90] MSI: Enable- Count=1/32 Maskable- 64bit+
Capabilities: [b0] MSI-X: Enable+ Count=17 Masked-
Capabilities: [c0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [150] Device Serial Number 00-00-00-00-00-00-00-00
Capabilities: [1b8] Latency Tolerance Reporting
Capabilities: [300] Secondary PCI Express
Capabilities: [900] L1 PM Substates
Kernel driver in use: nvme
Kernel modules: nvme
Cc: <stable@vger.kernel.org>
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Starting BDB version 239, hdr_dpcd_refresh_timeout is introduced to
backlight BDB data. Commit 700034566d ("drm/i915/bios: Define more BDB
contents") updated the backlight BDB data accordingly. This broke the
parsing of backlight BDB data in VBT for versions 236 - 238 (both
inclusive) and hence the backlight controls are not responding on units
with the concerned BDB version.
backlight_control information has been present in backlight BDB data
from at least BDB version 191 onwards, if not before. Hence this patch
extracts the backlight_control information for BDB version 191 or newer.
Tested on Chromebooks using Jasperlake SoC (reports bdb->version = 236).
Tested on Chromebooks using Raptorlake SoC (reports bdb->version = 251).
v2: removed checking the block size of the backlight BDB data
[vsyrjala: this is completely safe thanks to commit e163cfb4c9
("drm/i915/bios: Make copies of VBT data blocks")]
Fixes: 700034566d ("drm/i915/bios: Define more BDB contents")
Cc: stable@vger.kernel.org
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240221180622.v2.1.I0690aa3e96a83a43b3fc33f50395d334b2981826@changeid
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit c286f6a973)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
A few different bits of SoC-related Kconfig work. The first part of
this is shared with the DT updates - the modification of all SOC_CANAAN
users to SOC_CANAAN_K210 to split the existing m-mode nommu k210 away
from the k230 that is able to be used in a "common" kernel.
The other thing here is the removal of most of the SOC_VENDOR options,
with their ARCH_VENDOR equivalents that've been waiting in the wings for
1 year+ now made visible. Due a lapse on my part when originally adding
the ARCH_VENDOR stuff, the Microchip transition isn't complete - the
_POLARFIRE was a mistake to keep as there's gonna be non-PolarFire
RISC-V stuff from Microchip soonTM.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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Merge tag 'riscv-config-for-v6.10' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux into soc/drivers
RISC-V SoC Kconfig Updates for v6.10
A few different bits of SoC-related Kconfig work. The first part of
this is shared with the DT updates - the modification of all SOC_CANAAN
users to SOC_CANAAN_K210 to split the existing m-mode nommu k210 away
from the k230 that is able to be used in a "common" kernel.
The other thing here is the removal of most of the SOC_VENDOR options,
with their ARCH_VENDOR equivalents that've been waiting in the wings for
1 year+ now made visible. Due a lapse on my part when originally adding
the ARCH_VENDOR stuff, the Microchip transition isn't complete - the
_POLARFIRE was a mistake to keep as there's gonna be non-PolarFire
RISC-V stuff from Microchip soonTM.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* tag 'riscv-config-for-v6.10' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux:
riscv: config: enable ARCH_CANAAN in defconfig
RISC-V: drop SOC_VIRT for ARCH_VIRT
RISC-V: drop SOC_SIFIVE for ARCH_SIFIVE
RISC-V: drop SOC_MICROCHIP_POLARFIRE for ARCH_MICROCHIP
RISC-V: Drop unused SOC_CANAAN
reset: k210: Deprecate SOC_CANAAN and use SOC_CANAAN_K210
pinctrl: k210: Deprecate SOC_CANAAN and use SOC_CANAAN_K210
clk: k210: Deprecate SOC_CANAAN and use SOC_CANAAN_K210
soc: canaan: Deprecate SOC_CANAAN and use SOC_CANAAN_K210 for K210
riscv: Kconfig.socs: Split ARCH_CANAAN and SOC_CANAAN_K210
Link: https://lore.kernel.org/r/20240503-mardi-underling-3d81a9f97329@spud
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Decrease the usage of global GPIO numbers for LEDs for Orion5x boards
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Merge tag 'mvebu-arm-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into soc/arm
mvebu arm for 6.10 (part 1)
Decrease the usage of global GPIO numbers for LEDs for Orion5x boards
* tag 'mvebu-arm-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu:
ARM: orion5x: Convert TS409 board to GPIO descriptors for LEDs
ARM: orion5x: Convert Net2big board to GPIO descriptors for LEDs
ARM: orion5x: Convert MV2120 board to GPIO descriptors for LEDs
ARM: orion5x: Convert DNS323 board to GPIO descriptors for LEDs
ARM: orion5x: Convert D2Net board to GPIO descriptors for LEDs
Link: https://lore.kernel.org/r/87h6fcndxj.fsf@BLaptop.bootlin.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
On ths SA8155P automotive platform, the wrong gpio controller is defined
for the SD-card detect pin, which depending on probe ordering of things
cause ethernet to be broken. The card detect pin reference is corrected
to solve this problem.
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Merge tag 'qcom-arm64-fixes-for-6.9-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes
One more Qualcomm Arm64 DeviceTree fix for v6.9
On ths SA8155P automotive platform, the wrong gpio controller is defined
for the SD-card detect pin, which depending on probe ordering of things
cause ethernet to be broken. The card detect pin reference is corrected
to solve this problem.
* tag 'qcom-arm64-fixes-for-6.9-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
arm64: dts: qcom: sa8155p-adp: fix SDHC2 CD pin configuration
Link: https://lore.kernel.org/r/20240427153817.1430382-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
For devices with virt_boundary limit, the driver may provide zero max
segment size, we have to set it as UINT_MAX at default. Otherwise, it
may cause warning in driver when handling sglist.
Fix it by setting default max segment size as UINT_MAX.
Cc: Christoph Hellwig <hch@lst.de>
Cc: Mike Snitzer <snitzer@kernel.org>
Fixes: b561ea56a2 ("block: allow device to have both virt_boundary_mask and max segment size")
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Closes: https://lore.kernel.org/linux-block/7e38b67c-9372-a42d-41eb-abdce33d3372@linux-m68k.org/
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20240424134722.2584284-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Attributes for FDB learned entries were added to the if_link netlink api
for bridge linkinfo but are missing from the rt_link.yaml spec. Add the
missing attributes to the spec.
Fixes: ddd1ad6882 ("net: bridge: Add netlink knobs for number / max learned FDB entries")
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240503164304.87427-1-donald.hunter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'for-6.9-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"Two more fixes, both have some visible effects on user space:
- add check if quotas are enabled when passing qgroup inheritance
info, this affects snapper that could fail to create a snapshot
- do check for leaf/node flag WRITTEN earlier so that nodes are
completely validated before access, this used to be done by
integrity checker but it's been removed and left an unhandled case"
* tag 'for-6.9-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: make sure that WRITTEN is set on all metadata blocks
btrfs: qgroup: do not check qgroup inherit if qgroup is disabled
This reverts commit 07ed11afb6.
Stephen Rostedt reports:
"I went to run my tests on my VMs and the tests hung on boot up.
Unfortunately, the most I ever got out was:
[ 93.607888] Testing event system initcall: OK
[ 93.667730] Running tests on all trace events:
[ 93.669757] Testing all events: OK
[ 95.631064] ------------[ cut here ]------------
Timed out after 60 seconds"
and further debugging points to a possible circular locking dependency
between the console_owner locking and the worker pool locking.
Reverting the commit allows Steve's VM to boot to completion again.
[ This may obviously result in the "[TTM] Buffer eviction failed"
messages again, which was the reason for that original revert. But at
this point this seems preferable to a non-booting system... ]
Reported-and-bisected-by: Steven Rostedt <rostedt@goodmis.org>
Link: https://lore.kernel.org/all/20240502081641.457aa25f@gandalf.local.home/
Acked-by: Maxime Ripard <mripard@kernel.org>
Cc: Alex Constantino <dreaming.about.electric.sheep@gmail.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Timo Lindfors <timo.lindfors@iki.fi>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There's a typo that makes parent device uses child LNKCTL value and vice
versa. This causes Micron NVMe to trigger a reboot upon system resume.
Correct the typo to fix the issue.
Fixes: 64dbb2d707 ("PCI/ASPM: Disable L1 before configuring L1 Substates")
Link: https://lore.kernel.org/r/20240506051602.1990743-1-kai.heng.feng@canonical.com
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
[bhelgaas: update subject]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Intel hardware is capable of programming the Maud/Naud SDPs on its
own based on real-time clocks. While doing so, it takes care
of any deviations from the theoretical values. Programming the registers
explicitly with static values can interfere with this logic. Therefore,
let the HW decide the Maud and Naud SDPs on it's own.
Cc: stable@vger.kernel.org # v5.17
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8097
Co-developed-by: Kai Vehmanen <kai.vehmanen@intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240430091825.733499-1-chaitanya.kumar.borah@intel.com
(cherry picked from commit 8e056b50d9)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
We missed setting the CCS mode during resume and engine resets.
Create a workaround to be added in the engine's workaround list.
This workaround sets the XEHP_CCS_MODE value at every reset.
The issue can be reproduced by running:
$ clpeak --kernel-latency
Without resetting the CCS mode, we encounter a fence timeout:
Fence expiration time out i915-0000:03:00.0:clpeak[2387]:2!
Fixes: 6db31251bb ("drm/i915/gt: Enable only one CCS for compute workload")
Reported-by: Gnattu OC <gnattuoc@me.com>
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/10895
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Chris Wilson <chris.p.wilson@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: <stable@vger.kernel.org> # v6.2+
Tested-by: Gnattu OC <gnattuoc@me.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Tested-by: Krzysztof Gibala <krzysztof.gibala@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240426000723.229296-1-andi.shyti@linux.intel.com
(cherry picked from commit 4cfca03f76)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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Merge tag 'slab-for-6.9-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fixes from Vlastimil Babka:
- Fix for cleanup infrastructure (Dan Carpenter)
This makes the __free(kfree) cleanup hooks not crash on error
pointers.
- SLUB fix for freepointer checking (Nicolas Bouchinet)
This fixes a recently introduced bug that manifests when
init_on_free, CONFIG_SLAB_FREELIST_HARDENED and consistency checks
(slub_debug=F) are all enabled, and results in false-positive
freepointer corrupt reports for caches that store freepointer outside
of the object area.
* tag 'slab-for-6.9-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/slab: make __free(kfree) accept error pointers
mm/slub: avoid zeroing outside-object freepointer for single free
* A couple of non-critical build fixes to Character LCD library
* Miscellaneous fixes here and there
The following is an automated git shortlog grouped by driver:
charlcd:
- Don't rebuild when CONFIG_PANEL_BOOT_MESSAGE=y
- Add missing MODULE_DESCRIPTION()
linedisp:
- Group display drivers together
seg-led-gpio:
- Convert to platform remove callback returning void
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Merge tag 'auxdisplay-v6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay
Pull auxdisplay fixes from Andy Shevchenko:
- A couple of non-critical build fixes to Character LCD library
- Miscellaneous fixes here and there
* tag 'auxdisplay-v6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay:
auxdisplay: charlcd: Don't rebuild when CONFIG_PANEL_BOOT_MESSAGE=y
auxdisplay: charlcd: Add missing MODULE_DESCRIPTION()
auxdisplay: seg-led-gpio: Convert to platform remove callback returning void
auxdisplay: linedisp: Group display drivers together
bch2_fs_quota_read_inode() wasn't entirely updated to the
bch2_snapshot_tree() helper, which takes rcu lock.
Reported-by: syzbot+a3a9a61224ed3b7f0010@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Ancient versions of bcachefs produced packed formats that could
represent keys that our in memory format cannot represent;
bformat_needs_redo() has some tricky shifts to check for this sort of
overflow.
Reported-by: syzbot+594427aebfefeebe91c6@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
For forwards compatibility we have to allow unknown key types, and only
run the checks that make sense against them.
Fix a missing guard on k.k->type being known.
Reported-by: syzbot+ae4dc916da3ce51f284f@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We were forgetting to check for jset entries that overrun the end of the
section - both in validate and to_text(); to_text() needs to be safe for
types that fail to validate.
Reported-by: syzbot+c48865e11e7e893ec4ab@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
filefrag (and potentially other utilities that call fiemap) sometimes
pass ULONG_MAX as the length. fiemap_prep clamps excessively large
lengths - but the calculation of end can overflow if it occurs before
calling fiemap_prep. When this happens, filefrag assumes it has read to
the end and exits.
Signed-off-by: Reed Riley <reed@riley.engineer>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
The bucket_gens array is a single array allocation (one byte per
bucket), and kernel allocations are still limited to INT_MAX.
Check this limit to avoid failing the bucket_gens array allocation.
Reported-by: syzbot+b29f436493184ea42e2b@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bch2_get_next_dev() and bch2_get_next_online_dev() iterate over devices,
dropping and taking refs as they go; we can't access the previous device
(for ca->dev_idx) after we've dropped our ref to it, unless we take
rcu_read_lock() first.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bch2_dev_lookup() is supposed to take a ref on the device it returns, but
for_each_member_device() takes refs as it iterates,
for_each_member_device_rcu() does not.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Normally this is initialized in __bch2_write(), which is executed in a
loop, but the inline data path skips this.
Reported-by: syzbot+fd3ccb331eb21f05d13b@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We're using mutex_lock() inside a wait_event() conditional -
prepare_to_wait() has already flipped task state, so potentially
blocking ops need annotation.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
The race condition around the ECCCLR register access happens in the IRQ
disable method called in the device remove() procedure and in the ECC IRQ
handler:
1. Enable IRQ:
a. ECCCLR = EN_CE | EN_UE
2. Disable IRQ:
a. ECCCLR = 0
3. IRQ handler:
a. ECCCLR = CLR_CE | CLR_CE_CNT | CLR_CE | CLR_CE_CNT
b. ECCCLR = 0
c. ECCCLR = EN_CE | EN_UE
So if the IRQ disabling procedure is called concurrently with the IRQ
handler method the IRQ might be actually left enabled due to the
statement 3c.
The root cause of the problem is that ECCCLR register (which since
v3.10a has been called as ECCCTL) has intermixed ECC status data clear
flags and the IRQ enable/disable flags. Thus the IRQ disabling (clear EN
flags) and handling (write 1 to clear ECC status data) procedures must
be serialised around the ECCCTL register modification to prevent the
race.
So fix the problem described above by adding the spin-lock around the
ECCCLR modifications and preventing the IRQ-handler from modifying the
IRQs enable flags (there is no point in disabling the IRQ and then
re-enabling it again within a single IRQ handler call, see the
statements 3a/3b and 3c above).
Fixes: f7824ded41 ("EDAC/synopsys: Add support for version 3 of the Synopsys EDAC DDR")
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20240222181324.28242-2-fancer.lancer@gmail.com
net_alloc_generic is called by net_alloc, which is called without any
locking. It reads max_gen_ptrs, which is changed under pernet_ops_rwsem. It
is read twice, first to allocate an array, then to set s.len, which is
later used to limit the bounds of the array access.
It is possible that the array is allocated and another thread is
registering a new pernet ops, increments max_gen_ptrs, which is then used
to set s.len with a larger than allocated length for the variable array.
Fix it by reading max_gen_ptrs only once in net_alloc_generic. If
max_gen_ptrs is later incremented, it will be caught in net_assign_generic.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@igalia.com>
Fixes: 073862ba5d ("netns: fix net_alloc_generic()")
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240502132006.3430840-1-cascardo@igalia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
All EV4 machines are already gone, and the remaining EV5 based machines
all support the slightly more modern EV56 generation as well.
Debian only supports EV56 and later.
Drop both of these and build kernels optimized for EV56 and higher
when the "generic" options is selected, tuning for an out-of-order
EV6 pipeline, same as Debian userspace.
Since this was the only supported architecture without 8-bit and
16-bit stores, common kernel code no longer has to worry about
aligning struct members, and existing workarounds from the block
and tty layers can be removed.
The alpha memory management code no longer needs an abstraction
for the differences between EV4 and EV5+.
Link: https://lists.debian.org/debian-alpha/2023/05/msg00009.html
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
get_maintainers.pl sometimes suggests my name and old e-mail address, so
update .mailmap to point to my current e-mail address.
Link: https://lkml.kernel.org/r/20240503085736.3354268-1-john.g.garry@oracle.com
Signed-off-by: John Garry <john.g.garry@oracle.com>
Reported-by: Conor Dooley <conor@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
