| Age | Commit message (Collapse) | Author |
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Recently _pgd_alloc() was switched from using __get_free_pages() to
pagetable_alloc_noprof(), which might return a compound page in case
the allocation order is larger than 0.
On x86 this will be the case if CONFIG_MITIGATION_PAGE_TABLE_ISOLATION
is set, even if PTI has been disabled at runtime.
When running as a Xen PV guest (this will always disable PTI), using
a compound page for a PGD will result in VM_BUG_ON_PGFLAGS being
triggered when the Xen code tries to pin the PGD.
Fix the Xen issue together with the not needed 8k allocation for a
PGD with PTI disabled by replacing PGD_ALLOCATION_ORDER with an
inline helper returning the needed order for PGD allocations.
Fixes: a9b3c355c2e6 ("asm-generic: pgalloc: provide generic __pgd_{alloc,free}")
Reported-by: Petr Vaněk <arkamar@atlas.cz>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Tested-by: Petr Vaněk <arkamar@atlas.cz>
Cc:stable@vger.kernel.org
Link: https://lore.kernel.org/all/20250422131717.25724-1-jgross%40suse.com
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There is a spelling mistake in a DRM_DEV_DEBUG_KMS message. Fix it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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static 'struct decon_data' is only read, so it can be const for code
safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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Corrected a spelling mistake in the exynos_drm_fimd driver to improve code
readability. No functional changes were made.
Signed-off-by: Anindya Sundar Gayen <anindya.sg@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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In the vidi_get_modes() function, if either drm_edid_dup() or
drm_edid_alloc() fails, the function will immediately return 0,
indicating that no display modes can be retrieved. However, in
the event of failure in these two functions, it is still necessary
to call the subsequent drm_edid_connector_update() function with
a NULL drm_edid as an argument. This ensures that operations such
as connector settings are performed in its callee function,
_drm_edid_connector_property_update. To maintain the integrity of
the operation, redundant error handling needs to be removed.
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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It is not needed since drm_atomic_helper_shutdown checks it.
Signed-off-by: Guoqing Jiang <guoqing.jiang@canonical.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Merge ARM cpufreq fixes for 6.15-rc from Viresh Kumar:
"- Fix possible out-of-bound / null-ptr-deref in drivers (Andre Przywara
and Henry Martin).
- Fix Kconfig issues with compile-test (Johan Hovold and Krzysztof
Kozlowski).
- Fix invalid return value in .get() (Marc Zyngier).
- Add SM8650 to cpufreq-dt-platdev blocklist (Pengyu Luo)."
* tag 'cpufreq-arm-fixes-6.15-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
cpufreq: fix compile-test defaults
cpufreq: cppc: Fix invalid return value in .get() callback
cpufreq: scpi: Fix null-ptr-deref in scpi_cpufreq_get_rate()
cpufreq: scmi: Fix null-ptr-deref in scmi_cpufreq_get_rate()
cpufreq: apple-soc: Fix null-ptr-deref in apple_soc_cpufreq_get_rate()
cpufreq: Do not enable by default during compile testing
cpufreq: Add SM8650 to cpufreq-dt-platdev blocklist
cpufreq: sun50i: prevent out-of-bounds access
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Commit:
f4b07fd62d4d11d5 ("perf/core: Use POLLHUP for pinned events in error")
started to emit POLLHUP for pinned events in an error state.
But the POLLHUP is also used to signal events that the attached task is
terminated. To distinguish pinned per-task events in the error state
it would need to check if the task is live.
Change it to POLLERR to make it clear.
Suggested-by: Gabriel Marin <gmx@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250422223318.180343-1-namhyung@kernel.org
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Normally do_lock_mount(path, _) is locking a mountpoint pinned by
*path and at the time when matching unlock_mount() unlocks that
location it is still pinned by the same thing.
Unfortunately, for 'beneath' case it's no longer that simple -
the object being locked is not the one *path points to. It's the
mountpoint of path->mnt. The thing is, without sufficient locking
->mnt_parent may change under us and none of the locks are held
at that point. The rules are
* mount_lock stabilizes m->mnt_parent for any mount m.
* namespace_sem stabilizes m->mnt_parent, provided that
m is mounted.
* if either of the above holds and refcount of m is positive,
we are guaranteed the same for refcount of m->mnt_parent.
namespace_sem nests inside inode_lock(), so do_lock_mount() has
to take inode_lock() before grabbing namespace_sem. It does
recheck that path->mnt is still mounted in the same place after
getting namespace_sem, and it does take care to pin the dentry.
It is needed, since otherwise we might end up with racing mount --move
(or umount) happening while we were getting locks; in that case
dentry would no longer be a mountpoint and could've been evicted
on memory pressure along with its inode - not something you want
when grabbing lock on that inode.
However, pinning a dentry is not enough - the matching mount is
also pinned only by the fact that path->mnt is mounted on top it
and at that point we are not holding any locks whatsoever, so
the same kind of races could end up with all references to
that mount gone just as we are about to enter inode_lock().
If that happens, we are left with filesystem being shut down while
we are holding a dentry reference on it; results are not pretty.
What we need to do is grab both dentry and mount at the same time;
that makes inode_lock() safe *and* avoids the problem with fs getting
shut down under us. After taking namespace_sem we verify that
path->mnt is still mounted (which stabilizes its ->mnt_parent) and
check that it's still mounted at the same place. From that point
on to the matching namespace_unlock() we are guaranteed that
mount/dentry pair we'd grabbed are also pinned by being the mountpoint
of path->mnt, so we can quietly drop both the dentry reference (as
the current code does) and mnt one - it's OK to do under namespace_sem,
since we are not dropping the final refs.
That solves the problem on do_lock_mount() side; unlock_mount()
also has one, since dentry is guaranteed to stay pinned only until
the namespace_unlock(). That's easy to fix - just have inode_unlock()
done earlier, while it's still pinned by mp->m_dentry.
Fixes: 6ac392815628 "fs: allow to mount beneath top mount" # v6.5+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Change hardware configuration for the NETSYSv3.
- Enable PSE dummy page mechanism for the GDM1/2/3
- Enable PSE drop mechanism when the WDMA Rx ring full
- Enable PSE no-drop mechanism for packets from the WDMA Tx
- Correct PSE free drop threshold
- Correct PSE CDMA high threshold
Fixes: 1953f134a1a8b ("net: ethernet: mtk_eth_soc: add NETSYS_V3 version support")
Signed-off-by: Bo-Cun Chen <bc-bocun.chen@mediatek.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/b71f8fd9d4bb69c646c4d558f9331dd965068606.1744907886.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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syzbot reported:
tipc: Node number set to 1055423674
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 3 UID: 0 PID: 6017 Comm: kworker/3:5 Not tainted 6.15.0-rc1-syzkaller-00246-g900241a5cc15 #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events tipc_net_finalize_work
RIP: 0010:tipc_mon_reinit_self+0x11c/0x210 net/tipc/monitor.c:719
...
RSP: 0018:ffffc9000356fb68 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000003ee87cba
RDX: 0000000000000000 RSI: ffffffff8dbc56a7 RDI: ffff88804c2cc010
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000007
R13: fffffbfff2111097 R14: ffff88804ead8000 R15: ffff88804ead9010
FS: 0000000000000000(0000) GS:ffff888097ab9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f720eb00 CR3: 000000000e182000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
tipc_net_finalize+0x10b/0x180 net/tipc/net.c:140
process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
...
RIP: 0010:tipc_mon_reinit_self+0x11c/0x210 net/tipc/monitor.c:719
...
RSP: 0018:ffffc9000356fb68 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000003ee87cba
RDX: 0000000000000000 RSI: ffffffff8dbc56a7 RDI: ffff88804c2cc010
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000007
R13: fffffbfff2111097 R14: ffff88804ead8000 R15: ffff88804ead9010
FS: 0000000000000000(0000) GS:ffff888097ab9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f720eb00 CR3: 000000000e182000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
There is a racing condition between workqueue created when enabling
bearer and another thread created when disabling bearer right after
that as follow:
enabling_bearer | disabling_bearer
--------------- | ----------------
tipc_disc_timeout() |
{ | bearer_disable()
... | {
schedule_work(&tn->work); | tipc_mon_delete()
... | {
} | ...
| write_lock_bh(&mon->lock);
| mon->self = NULL;
| write_unlock_bh(&mon->lock);
| ...
| }
tipc_net_finalize_work() | }
{ |
... |
tipc_net_finalize() |
{ |
... |
tipc_mon_reinit_self() |
{ |
... |
write_lock_bh(&mon->lock); |
mon->self->addr = tipc_own_addr(net); |
write_unlock_bh(&mon->lock); |
... |
} |
... |
} |
... |
} |
'mon->self' is set to NULL in disabling_bearer thread and dereferenced
later in enabling_bearer thread.
This commit fixes this issue by validating 'mon->self' before assigning
node address to it.
Reported-by: syzbot+ed60da8d686dc709164c@syzkaller.appspotmail.com
Fixes: 46cb01eeeb86 ("tipc: update mon's self addr when node addr generated")
Signed-off-by: Tung Nguyen <tung.quang.nguyen@est.tech>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250417074826.578115-1-tung.quang.nguyen@est.tech
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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According to the review by Bill Cox [1], the Atmel SHA204A random number
generator produces random numbers with very low entropy.
Set the lowest possible entropy for this chip just to be safe.
[1] https://www.metzdowd.com/pipermail/cryptography/2014-December/023858.html
Fixes: da001fb651b00e1d ("crypto: atmel-i2c - add support for SHA204A random number generator")
Cc: <stable@vger.kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Fix off-by-one bug in the last page calculation for src and dst.
Reported-by: Nhat Pham <nphamcs@gmail.com>
Fixes: 2d3553ecb4e3 ("crypto: scomp - Remove support for some non-trivial SG lists")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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When pausing rx (e.g. set up xdp, xsk pool, rx resize), we call
napi_disable() on the receive queue's napi. In delayed refill_work, it
also calls napi_disable() on the receive queue's napi. When
napi_disable() is called on an already disabled napi, it will sleep in
napi_disable_locked while still holding the netdev_lock. As a result,
later napi_enable gets stuck too as it cannot acquire the netdev_lock.
This leads to refill_work and the pause-then-resume tx are stuck
altogether.
This scenario can be reproducible by binding a XDP socket to virtio-net
interface without setting up the fill ring. As a result, try_fill_recv
will fail until the fill ring is set up and refill_work is scheduled.
This commit adds virtnet_rx_(pause/resume)_all helpers and fixes up the
virtnet_rx_resume to disable future and cancel all inflights delayed
refill_work before calling napi_disable() to pause the rx.
Fixes: 413f0271f396 ("net: protect NAPI enablement with netdev_lock()")
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://patch.msgid.link/20250417072806.18660-2-minhquangbui99@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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A network restart test on a router led to an out-of-memory condition,
which was traced to a memory leak in the PHY LED trigger code.
The root cause is misuse of the devm API. The registration function
(phy_led_triggers_register) is called from phy_attach_direct, not
phy_probe, and the unregister function (phy_led_triggers_unregister)
is called from phy_detach, not phy_remove. This means the register and
unregister functions can be called multiple times for the same PHY
device, but devm-allocated memory is not freed until the driver is
unbound.
This also prevents kmemleak from detecting the leak, as the devm API
internally stores the allocated pointer.
Fix this by replacing devm_kzalloc/devm_kcalloc with standard
kzalloc/kcalloc, and add the corresponding kfree calls in the unregister
path.
Fixes: 3928ee6485a3 ("net: phy: leds: Add support for "link" trigger")
Fixes: 2e0bc452f472 ("net: phy: leds: add support for led triggers on phy link state change")
Signed-off-by: Hao Guan <hao.guan@siflower.com.cn>
Signed-off-by: Qingfang Deng <qingfang.deng@siflower.com.cn>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250417032557.2929427-1-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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As a result of an email from the fbnic author, I reviewed the phylink
documentation, and I have decided to clarify the wording in the
mac_link_(up|down)() kernel documentation as this was written from the
point of view of mvneta/mvpp2 and is misleading.
The documentation talks about forcing the link - indeed, this is what
is done in the mvneta and mvpp2 drivers but not at the physical layer
but the MACs idea, which has the effect of only allowing or stopping
packet flow at the MAC. This "link" needs to be controlled when using
a PHY or fixed link to start or stop packet flow at the MAC. However,
as the MAC and PCS are tightly integrated, if the MACs idea of the
link is forced down, it has the side effect that there is no way to
determine that the media link has come up - in this mode, the MAC must
be allowed to follow its built-in PCS so we can read the link state.
Frame the documentation in more generic terms, to avoid the thought
that the physical media link to the partner needs in some way to be
forced up or down with these calls; it does not. If that were to be
done, it would be a self-fulfilling prophecy - e.g. if the media link
goes down, then mac_link_down() will be called, and if the media link
is then placed into a forced down state, there is no possibility
that the media link will ever come up again - clearly this is a wrong
interpretation.
These methods are notifications to the MAC about what has happened to
the media link state - either from the PHY, or a PCS, or whatever
mechanism fixed-link is using. Thus, reword them to get away from
talking about changing link state to avoid confusion with media link
state.
This is not a change of any requirements of these methods.
Also, remove the obsolete references to EEE for these methods, we now
have the LPI functions for configuring the EEE parameters which
renders this redundant, and also makes the passing of "phy" to the
mac_link_up() function obsolete.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/E1u5Ah5-001GO1-7E@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When WoL is enabled, we update the software state in phylink to
indicate that the link is down, and disable the resolver from
bringing the link back up.
On resume, we attempt to bring the overall state into consistency
by calling the .mac_link_down() method, but this is wrong if the
link was already down, as phylink strictly orders the .mac_link_up()
and .mac_link_down() methods - and this would break that ordering.
Fixes: f97493657c63 ("net: phylink: add suspend/resume support")
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Tested-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1u55Qf-0016RN-PA@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Since b255ce4388e0, it is possible that the CRTC timing
information for the preferred mode has not yet been
calculated while amdgpu_dm_connector_mode_valid() is running.
In this case use the CRTC timing information of the actual mode.
Fixes: b255ce4388e0 ("drm/amdgpu: don't change mode in amdgpu_dm_connector_mode_valid()")
Closes: https://lore.kernel.org/all/ed09edb167e74167a694f4854102a3de6d2f1433.camel@irl.hu/
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4085
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Reviewed-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 20232192a5044d1f66dcbef0a24de1bb8157738d)
Cc: stable@vger.kernel.org
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[Why]
Recent findings show negligible power savings between IPS2 and RCG
during static desktop. In fact, DCN related clocks are higher
when IPS2 is enabled vs RCG.
RCG_IN_ACTIVE is also the default policy for another OS supported by
DC, and it has faster entry/exit.
[How]
Remove previous logic that checked for IPS2 support, and just default
to `DMUB_IPS_RCG_IN_ACTIVE_IPS2_IN_OFF`.
Fixes: 199888aa25b3 ("drm/amd/display: Update IPS default mode for DCN35/DCN351")
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 8f772d79ef39b463ead00ef6f009bebada3a9d49)
Cc: stable@vger.kernel.org
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[Why/How]
LTTPR are required to program DPCD 0000Eh to 0x4 (16ms) upon AUX read
reply to this register. Since old Sinks witih DPCD rev 1.1 and earlier
may not support this register, assume the mandatory value is programmed
by the LTTPR to avoid AUX timeout issues.
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 1594b60d74959c0680ddf777a74963c98afcdd7e)
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[Why]
The ACPI EDID in the BIOS of a Lenovo laptop includes 3 blocks, but
dm_helpers_probe_acpi_edid() has a start that is 'char'. The 3rd
block index starts after 255, so it can't be indexed properly.
This leads to problems with the display when the EDID is parsed.
[How]
Change the variable type to 'short' so that larger values can be indexed.
Cc: Renjith Pananchikkal <renjith.pananchikkal@amd.com>
Reported-by: Mark Pearson <mpearson@lenovo.com>
Suggested-by: David Ober <dober@lenovo.com>
Fixes: c6a837088bed ("drm/amd/display: Fetch the EDID from _DDC if available for eDP")
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit a918bb4a90d423ced2976a794f2724c362c1f063)
Cc: stable@vger.kernel.org
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If peer memory is accessible through XGMI, allow leaving it in VRAM
rather than forcing its migration to GTT on DMABuf attachment.
Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Tested-by: Hao (Claire) Zhou <hao.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 372c8d72c3680fdea3fbb2d6b089f76b4a6d596a)
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[Why]
Urgent latency adjustment was disabled on DCN35 due to issues with P0
enablement on some platforms. Without urgent latency, underflows occur
when doing certain high timing configurations. After testing, we found
that reenabling urgent latency didn't reintroduce p0 support on multiple
platforms.
[How]
renable urgent latency on DCN35 and setting it to 3000 Mhz.
This reverts commit 3412860cc4c0c484f53f91b371483e6e4440c3e5.
Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Nicholas Susanto <nsusanto@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit cd74ce1f0cddffb3f36d0995d0f61e89f0010738)
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[Why]
While system undergoing gpu reset always do full update
to sync the dc state before and after reset.
[How]
Return true in should_reset_plane() if gpu reset detected
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 2ba8619b9a378ad218ad6c2e2ccaee8f531e08de)
Cc: stable@vger.kernel.org
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[Why]
The indexing of stream_status in dm_gpureset_commit_state() is incorrect.
That leads to asserts in multi-display configuration after gpu reset.
[How]
Adjust the indexing logic to align stream_status with surface_updates.
Fixes: cdaae8371aa9 ("drm/amd/display: Handle GPU reset for DC block")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3808
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit d91bc901398741d317d9b55c59ca949d4bc7394b)
Cc: stable@vger.kernel.org
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Pinning of VRAM is for peer devices that don't support dynamic attachment
and move notifiers. But it requires that all such peer devices are able to
access VRAM via PCIe P2P. Any device without P2P access requires migration
to GTT, which fails if the memory is already pinned for another peer
device.
Sharing between GPUs should not require pinning in VRAM. However, if
DMABUF_MOVE_NOTIFY is disabled in the kernel build, even DMABufs shared
between GPUs must be pinned, which can lead to failures and functional
regressions on systems where some peer GPUs are not P2P accessible.
Disable VRAM pinning if move notifiers are disabled in the kernel build
to fix regressions when sharing BOs between GPUs.
Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Tested-by: Hao (Claire) Zhou <hao.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 05185812ae3695fe049c14847ce3cbeccff1bf2e)
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When determining the domains for pinning DMABufs, filter allowed_domains
and fail with a warning if VRAM is forbidden and GTT is not an allowed
domain.
Fixes: f5e7fabd1f5c ("drm/amdgpu: allow pinning DMA-bufs into VRAM if all importers can do P2P")
Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 3940796a6eefa555fec688a4adee5659ef9fa431)
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- subpage mode fixes:
- access correct object (folio) when looking up bit offset
- fix assertion condition for number of blocks per folio
- fix upper boundary of locking range in hole punch
- zoned fixes:
- fix potential deadlock caught by lockdep when zone reporting and
device freeze run in parallel
- fix zone write pointer mismatch and NULL pointer dereference when
metadata are converted from DUP to RAID1
- fix error handling when reloc inode creation fails
- in tree-checker, unify error code for header level check
- block layer: add helpers to read zone capacity
* tag 'for-6.15-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: zoned: skip reporting zone for new block group
block: introduce zone capacity helper
btrfs: tree-checker: adjust error code for header level check
btrfs: fix invalid inode pointer after failure to create reloc inode
btrfs: zoned: return EIO on RAID1 block group write pointer mismatch
btrfs: fix the ASSERT() inside GET_SUBPAGE_BITMAP()
btrfs: avoid page_lockend underflow in btrfs_punch_hole_lock_range()
btrfs: subpage: access correct object when reading bitmap start in subpage_calc_start_bit()
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Pull integrity fix from Roberto Sassu:
"One performance fix to avoid unnecessarily taking the inode lock"
* tag 'integrity-6.15-rc3-fix' of https://github.com/linux-integrity/linux:
ima: process_measurement() needlessly takes inode_lock() on MAY_READ
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This reduces the slowdown in face of multiple callers issuing close on
what turns out to not be the last reference.
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Link: https://lore.kernel.org/20250418125756.59677-1-mjguzik@gmail.com
Reviewed-by: Jan Kara <jack@suse.cz>
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202504171513.6d6f8a16-lkp@intel.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Davidlohr Bueso <dave@stgolabs.net> says:
This is a respin of the series[0] to address the sleep in atomic
scenarios for noref migration with large folios, introduced in:
3c20917120ce61 ("block/bdev: enable large folio support for large logical block sizes")
The main difference is that it removes the first patch and moves the fix
(reducing the i_private_lock critical region in the migration path) to
the final patch, which also introduces the new BH_Migrate flag. It also
simplifies the locking scheme in patch 1 to avoid folio trylocking in
the atomic lookup cases. So essentially blocking users will take the
folio lock and hence wait for migration, and otherwise nonblocking
callers will bail the lookup if a noref migration is on-going. Blocking
callers will also benefit from potential performance gains by reducing
contention on the spinlock for bdev mappings.
* patches from https://lore.kernel.org/20250418015921.132400-1-dave@stgolabs.net:
mm/migrate: fix sleep in atomic for large folios and buffer heads
fs/ext4: use sleeping version of sb_find_get_block()
fs/jbd2: use sleeping version of __find_get_block()
fs/ocfs2: use sleeping version of __find_get_block()
fs/buffer: use sleeping version of __find_get_block()
fs/buffer: introduce sleeping flavors for pagecache lookups
fs/buffer: split locking for pagecache lookups
Link: https://lore.kernel.org/20250418015921.132400-1-dave@stgolabs.net
Signed-off-by: Christian Brauner <brauner@kernel.org>
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The large folio + buffer head noref migration scenarios are
being naughty and blocking while holding a spinlock.
As a consequence of the pagecache lookup path taking the
folio lock this serializes against migration paths, so
they can wait for each other. For the private_lock
atomic case, a new BH_Migrate flag is introduced which
enables the lookup to bail.
This allows the critical region of the private_lock on
the migration path to be reduced to the way it was before
ebdf4de5642fb6 ("mm: migrate: fix reference check race
between __find_get_block() and migration"), that is covering
the count checks.
The scope is always noref migration.
Reported-by: kernel test robot <oliver.sang@intel.com>
Reported-by: syzbot+f3c6fda1297c748a7076@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/oe-lkp/202503101536.27099c77-lkp@intel.com
Fixes: 3c20917120ce61 ("block/bdev: enable large folio support for large logical block sizes")
Reviewed-by: Jan Kara <jack@suse.cz>
Co-developed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Link: https://kdevops.org/ext4/v6.15-rc2.html # [0]
Link: https://lore.kernel.org/all/aAAEvcrmREWa1SKF@bombadil.infradead.org/ # [1]
Link: https://lore.kernel.org/20250418015921.132400-8-dave@stgolabs.net
Tested-by: kdevops@lists.linux.dev # [0] [1]
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Enable ext4_free_blocks() to use it, which has a cond_resched to begin
with. Convert to the new nonatomic flavor to benefit from potential
performance benefits and adapt in the future vs migration such that
semantics are kept.
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Link: https://kdevops.org/ext4/v6.15-rc2.html # [0]
Link: https://lore.kernel.org/all/aAAEvcrmREWa1SKF@bombadil.infradead.org/ # [1]
Link: https://lore.kernel.org/20250418015921.132400-7-dave@stgolabs.net
Tested-by: kdevops@lists.linux.dev
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Convert to the new nonatomic flavor to benefit from potential
performance benefits and adapt in the future vs migration such
that semantics are kept.
- jbd2_journal_revoke(): can sleep (has might_sleep() in the beginning)
- jbd2_journal_cancel_revoke(): only used from do_get_write_access() and
do_get_create_access() which do sleep. So can sleep.
- jbd2_clear_buffer_revoked_flags() - only called from journal commit code
which sleeps. So can sleep.
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Link: https://kdevops.org/ext4/v6.15-rc2.html # [0]
Link: https://lore.kernel.org/all/aAAEvcrmREWa1SKF@bombadil.infradead.org/ # [1]
Link: https://lore.kernel.org/20250418015921.132400-6-dave@stgolabs.net
Tested-by: kdevops@lists.linux.dev
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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This is a path that allows for blocking as it does IO. Convert
to the new nonatomic flavor to benefit from potential performance
benefits and adapt in the future vs migration such that semantics
are kept.
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Link: https://kdevops.org/ext4/v6.15-rc2.html # [0]
Link: https://lore.kernel.org/all/aAAEvcrmREWa1SKF@bombadil.infradead.org/ # [1]
Link: https://lore.kernel.org/20250418015921.132400-5-dave@stgolabs.net
Tested-by: kdevops@lists.linux.dev
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Convert to the new nonatomic flavor to benefit from potential performance
benefits and adapt in the future vs migration such that semantics
are kept.
Convert write_boundary_block() which already takes the buffer
lock as well as bdev_getblk() depending on the respective gpf flags.
There are no changes in semantics.
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Link: https://kdevops.org/ext4/v6.15-rc2.html # [0]
Link: https://lore.kernel.org/all/aAAEvcrmREWa1SKF@bombadil.infradead.org/ # [1]
Link: https://lore.kernel.org/20250418015921.132400-4-dave@stgolabs.net
Tested-by: kdevops@lists.linux.dev # [0] [1]
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add __find_get_block_nonatomic() and sb_find_get_block_nonatomic()
calls for which users will be converted where safe. These versions
will take the folio lock instead of the mapping's private_lock.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Link: https://kdevops.org/ext4/v6.15-rc2.html # [0]
Link: https://lore.kernel.org/all/aAAEvcrmREWa1SKF@bombadil.infradead.org/ # [1]
Link: https://lore.kernel.org/20250418015921.132400-3-dave@stgolabs.net
Tested-by: kdevops@lists.linux.dev
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Both the hfs and hfsplus filesystem have been orphaned since at least
2014, i.e., over 10 years. However, HFS/HFS+ driver needs to stay
for Debian Ports as otherwise we won't be able to boot PowerMacs
using GRUB because GRUB won't be usable anymore on PowerMacs with
HFS/HFS+ being removed from the kernel.
This patch proposes to add Viacheslav Dubeyko and
John Paul Adrian Glaubitz as maintainers of HFS/HFS+ driver.
Signed-off-by: Viacheslav Dubeyko <slava@dubeyko.com>
Link: https://lore.kernel.org/20250417223507.1097186-1-slava@dubeyko.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Callers of __find_get_block() may or may not allow for blocking
semantics, and is currently assumed that it will not. Layout
two paths based on this. The the private_lock scheme will
continued to be used for atomic contexts. Otherwise take the
folio lock instead, which protects the buffers, such as
vs migration and try_to_free_buffers().
Per the "hack idea", the latter can alleviate contention on
the private_lock for bdev mappings. For reasons of determinism
and avoid making bugs hard to reproduce, the trylocking is not
attempted.
No change in semantics. All lookup users still take the spinlock.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Link: https://kdevops.org/ext4/v6.15-rc2.html # [0]
Link: https://lore.kernel.org/all/aAAEvcrmREWa1SKF@bombadil.infradead.org/ # [1]
Link: https://lore.kernel.org/20250418015921.132400-2-dave@stgolabs.net
Tested-by: kdevops@lists.linux.dev
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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When the select of PRIME_MUMBERS was removed from it's KUnit test
Kconfig nothing was added to the KUnit configs, meaning that when run
via the KUnit runner the tests are neither built nor run. Add
PRIME_NUMBERS to all_tests.config so they are enabled when the KUnit
runner builds the kernel.
Fixes: 3f2925174f8b ("lib/prime_numbers: KUnit test should not select PRIME_NUMBERS")
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250422-lib-fix-prime-numbers-kunit-v1-1-4278c1d4a4ae@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
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When a reserved memory region described in the device tree is attached
to a device, it is expected that the device's limitations are correctly
included in that description.
However, if the device driver failed to implement DMA address masking
or addressing beyond the default 32 bits (on arm64), then bad things
could happen because the DMA address was truncated, such as playing
back audio with no actual audio coming out, or DMA overwriting random
blocks of kernel memory.
Check against the coherent DMA mask when the memory regions are attached
to the device. Give a warning when the memory region can not be covered
by the mask.
A warning instead of a hard error was chosen, because it is possible
that existing drivers could be working fine even if they forgot to
extend the coherent DMA mask.
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20250421083930.374173-1-wenst@chromium.org
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On IMA policy update, if a measure rule exists in the policy,
IMA_MEASURE is set for ima_policy_flags which makes the violation_check
variable always true. Coupled with a no-action on MAY_READ for a
FILE_CHECK call, we're always taking the inode_lock().
This becomes a performance problem for extremely heavy read-only workloads.
Therefore, prevent this only in the case there's no action to be taken.
Signed-off-by: Frederick Lawler <fred@cloudflare.com>
Acked-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
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Remove the duplicated section and while at it, turn spaces into tabs.
Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Fixes: c7b67ddc3c99 ("xfs: document zoned rt specifics in admin-guide")
Signed-off-by: Carlos Maiolino <cem@kernel.org>
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xfs_zoned_need_gc makes use of mult_frac() to calculate the threshold
for triggering the zoned garbage collector, but, turns out mult_frac()
doesn't properly work with 64-bit data types and this caused build
failures on some 32-bit architectures.
Fix this by essentially open coding mult_frac() in a 64-bit friendly
way.
Notice we don't need to bother with counters underflow here because
xfs_estimate_freecounter() will always return a positive value, as it
leverages percpu_counter_read_positive to read such counters.
Fixes: 845abeb1f06a ("xfs: add tunable threshold parameter for triggering zone GC")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202504181233.F7D9Atra-lkp@intel.com/
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hans Holmberg <hans.holmberg@wdc.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
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In lwtunnel_{output|xmit}(), dev_xmit_recursion() may be called in
preemptible scope for PREEMPT kernels. This patch disables BHs before
calling dev_xmit_recursion(). BHs are re-enabled only at the end, since
we must ensure the same CPU is used for both dev_xmit_recursion_inc()
and dev_xmit_recursion_dec() (and any other recursion levels in some
cases) in order to maintain valid per-cpu counters.
Reported-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Closes: https://lore.kernel.org/netdev/CAADnVQJFWn3dBFJtY+ci6oN1pDFL=TzCmNbRgey7MdYxt_AP2g@mail.gmail.com/
Reported-by: Eduard Zingerman <eddyz87@gmail.com>
Closes: https://lore.kernel.org/netdev/m2h62qwf34.fsf@gmail.com/
Fixes: 986ffb3a57c5 ("net: lwtunnel: fix recursion loops")
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250416160716.8823-1-justin.iurman@uliege.be
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Zero-initialize TCP header via memset() to avoid garbage values that
may affect checksum or behavior during test transmission.
Also zero-fill allocated payload and padding regions using memset()
after skb_put(), ensuring deterministic content for all outgoing
test packets.
Fixes: 3e1e58d64c3d ("net: add generic selftest support")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Cc: stable@vger.kernel.org
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250416160125.2914724-1-o.rempel@pengutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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lkp reported a warning about missing prototype for a recent patch.
The kernel-doc style comments are out of sync, move them to the right
function.
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Christoph Hellwig <hch@lst.de>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202504190615.g9fANxHw-lkp@intel.com/
Signed-off-by: Balbir Singh <balbirs@nvidia.com>
[mszyprow: reformatted subject]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20250422114034.3535515-1-balbirs@nvidia.com
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With lan88xx based devices the lan78xx driver can get stuck in an
interrupt loop while bringing the device up, flooding the kernel log
with messages like the following:
lan78xx 2-3:1.0 enp1s0u3: kevent 4 may have been dropped
Removing interrupt support from the lan88xx PHY driver forces the
driver to use polling instead, which avoids the problem.
The issue has been observed with Raspberry Pi devices at least since
4.14 (see [1], bug report for their downstream kernel), as well as
with Nvidia devices [2] in 2020, where disabling interrupts was the
vendor-suggested workaround (together with the claim that phylib
changes in 4.9 made the interrupt handling in lan78xx incompatible).
Iperf reports well over 900Mbits/sec per direction with client in
--dualtest mode, so there does not seem to be a significant impact on
throughput (lan88xx device connected via switch to the peer).
[1] https://github.com/raspberrypi/linux/issues/2447
[2] https://forums.developer.nvidia.com/t/jetson-xavier-and-lan7800-problem/142134/11
Link: https://lore.kernel.org/0901d90d-3f20-4a10-b680-9c978e04ddda@lunn.ch
Fixes: 792aec47d59d ("add microchip LAN88xx phy driver")
Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Cc: kernel-list@raspberrypi.com
Cc: stable@vger.kernel.org
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250416102413.30654-1-fiona.klute@gmx.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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When trying to enable a port that has no transport configured yet,
nvmet_enable_port() uses NVMF_TRTYPE_MAX (255) to query the transports
array, causing an out-of-bounds access:
[ 106.058694] BUG: KASAN: global-out-of-bounds in nvmet_enable_port+0x42/0x1da
[ 106.058719] Read of size 8 at addr ffffffff89dafa58 by task ln/632
[...]
[ 106.076026] nvmet: transport type 255 not supported
Since commit 200adac75888, NVMF_TRTYPE_MAX is the default state as configured by
nvmet_ports_make().
Avoid this by checking for NVMF_TRTYPE_MAX before proceeding.
Fixes: 200adac75888 ("nvme: Add PCI transport type")
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
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commit a8972d5a49b4 ("drm: panel: jd9365da-h3: fix reset signal polarity")
fixed reset signal polarity in jadard_dsi_probe() and jadard_prepare().
It was not done in jadard_unprepare() because of an incorrect assumption
about reset line handling in power off mode. After looking into the
datasheet, it now appears that before disabling regulators, the reset line
is deasserted first, and if reset_before_power_off_vcioo is true, then the
reset line is asserted.
Fix reset polarity by inverting gpiod_set_value() second argument in
in jadard_unprepare().
Fixes: 6b818c533dd8 ("drm: panel: Add Jadard JD9365DA-H3 DSI panel")
Fixes: 2b976ad760dc ("drm/panel: jd9365da: Support for kd101ne3-40ti MIPI-DSI panel")
Fixes: a8972d5a49b4 ("drm: panel: jd9365da-h3: fix reset signal polarity")
Cc: stable@vger.kernel.org
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250417195507.778731-1-hugo@hugovil.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250417195507.778731-1-hugo@hugovil.com
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