[ Upstream commit c133390398 ]
When test_send_signal_kern__open_and_load() fails parent closes the
pipe which cases ASSERT_EQ(read(pipe_p2c...)) to fail, but child
continues and enters infinite loop, while parent is stuck in wait(NULL).
Other error paths have similar issue, so kill the child before waiting on it.
The bug was discovered while compiling all of selftests with -O1 instead of -O2
which caused progs/test_send_signal_kern.c to fail to load.
Fixes: ab8b7f0cb3 ("tools/bpf: Add self tests for bpf_send_signal_thread()")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20251113171153.2583-1-alexei.starovoitov@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit fea3f5e83c ]
The error that returned by ftrace_set_filter_ip() in register_fentry() is
not handled properly. Just fix it.
Fixes: 00963a2e75 ("bpf: Support bpf_trampoline on functions with IPMODIFY (e.g. livepatch)")
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Acked-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20251110120705.1553694-1-dongml2@chinatelecom.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit c1da3df719 ]
bpf_try_get_buffers() returns one of multiple per-CPU buffers based on a
per-CPU nesting counter. This mechanism expects that buffers are not
endlessly acquired before being returned. migrate_disable() ensures that a
task remains on the same CPU, but it does not prevent the task from being
preempted by another task on that CPU.
Without disabled preemption, a task may be preempted while holding a
buffer, allowing another task to run on same CPU and acquire an
additional buffer. Several such preemptions can cause the per-CPU
nest counter to exceed MAX_BPRINTF_NEST_LEVEL and trigger the warning in
bpf_try_get_buffers(). Adding preempt_disable()/preempt_enable() around
buffer acquisition and release prevents this task preemption and
preserves the intended bounded nesting behavior.
Reported-by: syzbot+b0cff308140f79a9c4cb@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/68f6a4c8.050a0220.1be48.0011.GAE@google.com/
Fixes: 4223bf833c ("bpf: Remove preempt_disable in bpf_try_get_buffers")
Suggested-by: Yonghong Song <yonghong.song@linux.dev>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Sahil Chandna <chandna.sahil@gmail.com>
Link: https://lore.kernel.org/r/20251114064922.11650-1-chandna.sahil@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit d81d9d389b ]
It is possible that the kernel toolchain generates warnings when used
together with the system toolchain. This happens for example when the
older kernel toolchain does not handle new versions of sframe debug
information. While these warnings where ignored during the evaluation
of CC_CAN_LINK, together with CONFIG_WERROR the actual userprog build
will later fail.
Example warning:
.../x86_64-linux/13.2.0/../../../../x86_64-linux/bin/ld:
error in /lib/../lib64/crt1.o(.sframe); no .sframe will be created
collect2: error: ld returned 1 exit status
Make sure that the very simple example program does not generate
warnings already to avoid breaking the userprog compilations.
Fixes: ec4a3992bc ("kbuild: respect CONFIG_WERROR for linker and assembler")
Fixes: 3f0ff4cc6f ("kbuild: respect CONFIG_WERROR for userprogs")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20251114-kbuild-userprogs-bits-v3-1-4dee0d74d439@linutronix.de
Signed-off-by: Nicolas Schier <nsc@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 91c4c89db4 ]
pbus_reassign_bridge_resources() saves bridge windows into the saved
list before attempting to adjust resource assignments to perform a BAR
resize operation. If resource adjustments cannot be completed fully,
rollback is attempted by restoring the resource from the saved list.
The rollback, however, does not check whether the resources it restores were
assigned by the partial resize attempt. If restore changes addresses of the
resource, it can result in corrupting the resource tree.
An example of a corrupted resource tree with overlapping addresses:
6200000000000-6203fbfffffff : pciex@620c3c0000000
6200000000000-6203fbff0ffff : PCI Bus 0030:01
6200020000000-62000207fffff : 0030:01:00.0
6200000000000-6203fbff0ffff : PCI Bus 0030:02
A resource that are assigned into the resource tree must remain
unchanged. Thus, release such a resource before attempting to restore
and claim it back.
For simplicity, always do the release and claim back for the resource
even in the cases where it is restored to the same address range.
Note: this fix may "break" some cases where devices "worked" because
the resource tree corruption allowed address space double counting to
fit more resource than what can now be assigned without double
counting. The upcoming changes to BAR resizing should address those
scenarios (to the extent possible).
Fixes: 8bb705e3e7 ("PCI: Add pci_resize_resource() for resizing BARs")
Reported-by: Simon Richter <Simon.Richter@hogyros.de>
Link: https://lore.kernel.org/linux-pci/67840a16-99b4-4d8c-9b5c-4721ab0970a2@hogyros.de/
Reported-by: Alex Bennée <alex.bennee@linaro.org>
Link: https://lore.kernel.org/linux-pci/874irqop6b.fsf@draig.linaro.org/
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Alex Bennée <alex.bennee@linaro.org> # AVA, AMD GPU
Link: https://patch.msgid.link/20251113162628.5946-2-ilpo.jarvinen@linux.intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit ce27c9c212 ]
Existing code only sets CPU and GPU speedo IDs 0 and 1. The CPU DVFS
code supports 11 IDs and nouveau supports 5. This aligns with what the
downstream vendor kernel supports. Align SKUs with the downstream list.
The Tegra210 CVB tables were added in the first referenced fixes commit.
Since then, all Tegra210 SoCs have tried to scale to 1.9 GHz, when the
supported devkits are only supposed to scale to 1.5 or 1.7 GHZ.
Overclocking should not be the default state.
Fixes: 2b2dbc2f94 ("clk: tegra: dfll: add CVB tables for Tegra210")
Fixes: 579db6e5d9 ("arm64: tegra: Enable DFLL support on Jetson Nano")
Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 79bd8c9814 ]
With 6e0a48552b (ps3disk: use memcpy_{from,to}_bvec) converting
ps3disk to new bvec helpers, incrementing the offset was accidently
lost, corrupting consecutive buffers. Restore index for non-corrupted
data transfers.
Fixes: 6e0a48552b (ps3disk: use memcpy_{from,to}_bvec)
Signed-off-by: René Rebe <rene@exactco.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit d9792823d1 ]
The commit a106ed98af ("drm/msm/dpu: use devres-managed allocation for
HW blocks") dropped all dpu_hw_foo_destroy() functions, but the
prototype for dpu_hw_dsc_destroy() was omitted. Drop it now to clean up
the header.
Fixes: a106ed98af ("drm/msm/dpu: use devres-managed allocation for HW blocks")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Jessica Zhang <jesszhan0024@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/683697/
Link: https://lore.kernel.org/r/20251027-dpu-drop-dsc-destroy-v1-1-968128de4bf6@oss.qualcomm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 9c92d36b0b ]
For BT use cases, pins are configured with pull-up state in sleep state
to avoid noise. If IRQ type is configured as level high and the GPIO line
is also in a high state, it causes continuous interrupt assertions leading
to an IRQ storm when wakeup irq enables at system suspend/runtime suspend.
Switching to edge-triggered interrupt (IRQ_TYPE_EDGE_FALLING) resolves
this by only triggering on state transitions (high-to-low) rather than
maintaining sensitivity to the static level state, effectively preventing
the continuous interrupt condition and eliminating the wakeup IRQ storm.
Fixes: 9380e0a1d4 ("arm64: dts: qcom: qrb2210-rb1: add Bluetooth support")
Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251110101043.2108414-2-praveen.talari@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 3cf8e55894 ]
Instead of caring to correctly pluralize "PWM device(s)" using
(chip->npwm != 1) ? "s" : ""
or
str_plural(chip->npwm)
just simplify the format to not need a plural-s.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://patch.msgid.link/20250926165702.321514-2-u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Stable-dep-of: 5f7ff902e7 ("pwm: Use %u to printf unsigned int pwm_chip::npwm and pwm_chip::id")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 76ce17f6f7 ]
The save_iaa_wq() function unconditionally returns 0, even when an error
is encountered. This prevents the error code from being propagated to the
caller.
Fix this by returning the 'ret' variable, which holds the actual status
of the operations within the function.
Fixes: ea7a5cbb43 ("crypto: iaa - Add Intel IAA Compression Accelerator crypto driver core")
Signed-off-by: Zilin Guan <zilin@seu.edu.cn>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit c432180a7d ]
Not all system controller registers are accessible from Linux. Accessing
such registers generates synchronous external abort. Populate the
readable_reg and writeable_reg members of the regmap config to inform the
regmap core which registers can be accessed. The list will need to be
updated whenever new system controller functionality is exported through
regmap.
Fixes: 2da2740fb9 ("soc: renesas: rz-sysc: Add syscon/regmap support")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251105070526.264445-3-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 95d9c3f0e4 ]
Commit under Fixes introduced support for PCIe EP mode on AM654x platforms.
When the mode happens to be either "DW_PCIE_RC_TYPE" or "DW_PCIE_EP_TYPE",
the PCIe Controller is configured accordingly. However, when the mode is
neither of them, an error message is displayed, but the driver probe
succeeds. Since this "invalid" mode is not associated with a functional
PCIe Controller, the probe should fail.
Fix the behavior by exiting "ks_pcie_probe()" with the return value of
"-EINVAL" in addition to displaying the existing error message when the
mode is invalid.
Fixes: 23284ad677 ("PCI: keystone: Add support for PCIe EP in AM654x Platforms")
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251029080547.1253757-4-s-vadapalli@ti.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 6af6e49a76 ]
As [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing
calls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the
memory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the
map gets freed.
Fix this by calling 'bpf_obj_free_fields()' after
'copy_map_value[,_long]()' in 'pcpu_copy_value()'.
Fixes: 65334e64a4 ("bpf: Support kptrs in percpu hashmap and percpu LRU hashmap")
Signed-off-by: Leon Hwang <leon.hwang@linux.dev>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20251105151407.12723-2-leon.hwang@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit ca25834123 ]
Hardware context destroy function holds dev_lock while waiting for all jobs
to complete. The timeout job also needs to acquire dev_lock, this leads to
a deadlock.
Fix the issue by temporarily releasing dev_lock before waiting for all
jobs to finish, and reacquiring it afterward.
Fixes: 4fd6ca90fc ("accel/amdxdna: Refactor hardware context destroy routine")
Reviewed-by: Maciej Falkowski <maciej.falkowski@linux.intel.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20251107181050.1293125-1-lizhi.hou@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 6ff9385c07 ]
The mailbox interrupt register is not always cleared when a mailbox channel
is created. This can leave stale interrupt states from previous operations.
Fix this by explicitly clearing the interrupt register in the mailbox
channel creation function.
Fixes: b87f920b93 ("accel/amdxdna: Support hardware mailbox")
Reviewed-by: Maciej Falkowski <maciej.falkowski@linux.intel.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20251107181115.1293158-1-lizhi.hou@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit bfc184cb1b ]
arch_add_memory() is used to hotplug memory into a system but as a part
of its implementation it calls __create_pgd_mapping(), which uses
pgtable_alloc() in order to build intermediate page tables. As this path
was initally only used during early boot pgtable_alloc() is designed to
BUG_ON() on failure. However, in the event that memory hotplug is
attempted when the system's memory is extremely tight and the allocation
were to fail, it would lead to panicking the system, which is not
desirable. Hence update __create_pgd_mapping and all it's callers to be
non void and propagate -ENOMEM on allocation failure to allow system to
fail gracefully.
But during early boot if there is an allocation failure, we want the
system to panic, hence create a wrapper around __create_pgd_mapping()
called early_create_pgd_mapping() which is designed to panic, if ret
is non zero value. All the init calls are updated to use this wrapper
rather than the modified __create_pgd_mapping() to restore
functionality.
Fixes: 4ab2150615 ("arm64: Add memory hotplug support")
Reviewed-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Signed-off-by: Chaitanya S Prakash <chaitanyas.prakash@arm.com>
Signed-off-by: Linu Cherian <linu.cherian@arm.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 03865dd8af ]
The function netxbig_gpio_ext_get() acquires GPIO descriptors but
fails to release them when errors occur mid-way through initialization.
The cleanup callback registered by devm_add_action_or_reset() only
runs on success, leaving acquired GPIOs leaked on error paths.
Add goto-based error handling to release all acquired GPIOs before
returning errors.
Fixes: 9af512e819 ("leds: netxbig: Convert to use GPIO descriptors")
Suggested-by: Markus Elfring <Markus.Elfring@web.de>
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20251031021620.781-1-vulab@iscas.ac.cn
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit acd194d9b5 ]
The driver calls ioport_map() to map I/O ports in sim710_probe_common()
but never calls ioport_unmap() to release the mapping. This causes
resource leaks in both the error path when request_irq() fails and in
the normal device removal path via sim710_device_remove().
Add ioport_unmap() calls in the out_release error path and in
sim710_device_remove().
Fixes: 56fece2008 ("[PATCH] finally fix 53c700 to use the generic iomem infrastructure")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20251029032555.1476-1-vulab@iscas.ac.cn
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit d46c69a087 ]
Commit aefed3e554 ("scsi: qla2xxx: target: Fix offline port handling
and host reset handling") caused two problems:
1. Commands sent to FW, after chip reset got stuck and never freed as FW
is not going to respond to them anymore.
2. BUG_ON(cmd->sg_mapped) in qlt_free_cmd(). Commit 26f9ce5381
("scsi: qla2xxx: Fix missed DMA unmap for aborted commands")
attempted to fix this, but introduced another bug under different
circumstances when two different CPUs were racing to call
qlt_unmap_sg() at the same time: BUG_ON(!valid_dma_direction(dir)) in
dma_unmap_sg_attrs().
So revert "scsi: qla2xxx: Fix missed DMA unmap for aborted commands" and
partially revert "scsi: qla2xxx: target: Fix offline port handling and
host reset handling" at __qla2x00_abort_all_cmds.
Fixes: aefed3e554 ("scsi: qla2xxx: target: Fix offline port handling and host reset handling")
Fixes: 26f9ce5381 ("scsi: qla2xxx: Fix missed DMA unmap for aborted commands")
Co-developed-by: Dmitry Bogdanov <d.bogdanov@yadro.com>
Signed-off-by: Dmitry Bogdanov <d.bogdanov@yadro.com>
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Link: https://patch.msgid.link/0e7e5d26-e7a0-42d1-8235-40eeb27f3e98@cybernetics.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 593ee49222 ]
acpi_fwnode_graph_parse_endpoint() calls fwnode_get_parent() to obtain the
parent fwnode but returns without calling fwnode_handle_put() on it. This
potentially leads to a fwnode refcount leak and prevents the parent node
from being released properly.
Call fwnode_handle_put() on the parent fwnode before returning to prevent
the leak from occurring.
Fixes: 3b27d00e7b ("device property: Move fwnode graph ops to firmware specific locations")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
[ rjw: Changelog edits ]
Link: https://patch.msgid.link/20251111075000.1828-1-vulab@iscas.ac.cn
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit c9dff86eb7 ]
Fields in ocfs2_dinode is little endian, covert to host endian when
checking those contents.
Link: https://lkml.kernel.org/r/20251025123218.3997866-1-joseph.qi@linux.alibaba.com
Fixes: fdbb6cd96e ("ocfs2: correct l_next_free_rec in online check")
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-by: Heming Zhao <heming.zhao@suse.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 8a7d58845f ]
In '__ocfs2_move_extent()', relax 'BUG()' to 'ocfs2_error()' just
to avoid crashing the whole kernel due to a filesystem corruption.
Fixes: 8f603e567a ("Ocfs2/move_extents: move a range of extent.")
Link: https://lkml.kernel.org/r/20251009102349.181126-2-dmantipov@yandex.ru
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Closes: https://syzkaller.appspot.com/bug?extid=727d161855d11d81e411
Reported-by: syzbot+727d161855d11d81e411@syzkaller.appspotmail.com
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 372a12bd5d ]
The pointer may be invalid when gets to the printf(). In particular
the time_and_date() dereferencing it in some cases without checking.
Move the check from rtc_str() to time_and_date() to cover all cases.
Fixes: 7daac5b2fd ("lib/vsprintf: Print time64_t in human readable format")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://patch.msgid.link/20251110132118.4113976-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit f8def051bb ]
The current code uses of_iomap() to map registers but never calls
iounmap() on any error path after the mapping. This causes a memory
leak when probe fails after successful ioremap, for example when
of_clk_add_provider() or r9a06g032_add_clk_domain() fails.
Replace of_iomap() with devm_of_iomap() to automatically unmap the
region on probe failure. Update the error check accordingly to use
IS_ERR() and PTR_ERR() since devm_of_iomap() returns ERR_PTR on error.
Fixes: 4c3d88526e ("clk: renesas: Renesas R9A06G032 clock driver")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251030061603.1954-1-vulab@iscas.ac.cn
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 145dfd70b9 ]
Add the CLK_SET_RATE_PARENT flag to divider clock registration so that rate
changes can propagate to parent clocks when needed. This allows the CPG
divider clocks to request rate adjustments from their parent, ensuring
correct frequency scaling and improved flexibility in clock rate selection.
Fixes: 065fe720ee ("clk: renesas: Add support for R9A09G077 SoC")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251028165127.991351-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 86db652fc2 ]
After integrating OLDI support[0], it is necessary to identify which VP
instances use OLDI, since the OLDI driver owns the video port clock
(as a serial clock). Clock operations on these VPs must be delegated to
the OLDI driver, not handled by the TIDSS driver. This issue also
emerged in upstream discussions when DSI-related clock management was
attempted in the TIDSS driver[1].
To address this, add an 'is_ext_vp_clk' array to the 'tidss_device'
structure, marking a VP as 'true' during 'tidss_oldi_init()' and as
'false' during 'tidss_oldi_deinit()'. TIDSS then uses 'is_ext_vp_clk'
to skip clock validation checks in 'dispc_vp_mode_valid()' for VPs
under OLDI control.
Since OLDI uses the DSS VP clock directly as a serial interface and
manages its own rate, mode validation should be implemented in the OLDI
bridge's 'mode_valid' hook. This patch adds that logic, ensuring proper
delegation and avoiding spurious clock handling in the TIDSS driver.
[0]: https://lore.kernel.org/all/20250528122544.817829-1-aradhya.bhatia@linux.dev/
[1]: https://lore.kernel.org/all/DA6TT575Z82D.3MPK8HG5GRL8U@kernel.org/
Fixes: 7246e09299 ("drm/tidss: Add OLDI bridge support")
Tested-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Signed-off-by: Swamil Jain <s-jain1@ti.com>
Link: https://patch.msgid.link/20251104151422.307162-3-s-jain1@ti.com
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patch.msgid.link/ffd5ebe03391b3c01e616c0c844a4b8ddecede36.1762513240.git.jani.nikula@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 527e132573 ]
The TIDSS hardware does not have independent maximum or minimum pixel
clock limits for each video port. Instead, these limits are determined
by the SoC's clock architecture. Previously, this constraint was
modeled using the 'max_pclk_khz' and 'min_pclk_khz' fields in
'dispc_features', but this approach is static and does not account for
the dynamic behavior of PLLs.
This patch removes the 'max_pclk_khz' and 'min_pclk_khz' fields from
'dispc_features'. The correct way to check if a requested mode's pixel
clock is supported is by using 'clk_round_rate()' in the 'mode_valid()'
hook. If the best frequency match for the mode clock falls within the
supported tolerance, it is approved. TIDSS supports a 5% pixel clock
tolerance, which is now reflected in the validation logic.
This change allows existing DSS-compatible drivers to be reused across
SoCs that only differ in their pixel clock characteristics. The
validation uses 'clk_round_rate()' for each mode, which may introduce
additional delay (about 3.5 ms for 30 modes), but this is generally
negligible. Users desiring faster validation may bypass these calls
selectively, for example, checking only the highest resolution mode,
as shown here[1].
[1]: https://lore.kernel.org/all/20250704094851.182131-3-j-choudhary@ti.com/
Tested-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Signed-off-by: Swamil Jain <s-jain1@ti.com>
Link: https://patch.msgid.link/20251104151422.307162-2-s-jain1@ti.com
[Tomi: dropped 'inline' from check_pixel_clock]
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Stable-dep-of: 86db652fc2 ("drm/tidss: Move OLDI mode validation to OLDI bridge mode_valid hook")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 367377f45c ]
It should also have PERF_SAMPLE_TID to enable inherit and PERF_SAMPLE_READ
on recent kernels. Not having _TID makes the feature check wrongly detect
the inherit and _READ support.
It was reported that the following command failed due to the error in
the missing feature check on Intel SPR machines.
$ perf record -e '{cpu/mem-loads-aux/S,cpu/mem-loads,ldlat=3/PS}' -- ls
Error:
Failure to open event 'cpu/mem-loads,ldlat=3/PS' on PMU 'cpu' which will be removed.
Invalid event (cpu/mem-loads,ldlat=3/PS) in per-thread mode, enable system wide with '-a'.
Reviewed-by: Ian Rogers <irogers@google.com>
Fixes: 3b193a57ba ("perf tools: Detect missing kernel features properly")
Reported-and-tested-by: Chen, Zide <zide.chen@intel.com>
Closes: https://lore.kernel.org/lkml/20251022220802.1335131-1-zide.chen@intel.com/
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 1fdc2cd347 ]
If a CPU supports FEAT_TRF, as described in the section K5.5 "Context
switching", Arm ARM (ARM DDI 0487 L.a), it defines a flow to prohibit
program-flow trace, execute a TSB CSYNC instruction for flushing,
followed by clearing TRCPRGCTLR.EN bit.
To restore the state, the reverse sequence is required.
This differs from the procedure described in the section 3.4.1 "The
procedure when powering down the PE" of ARM IHI0064H.b, which involves
the OS Lock to prevent external debugger accesses and implicitly
disables trace.
To be compatible with different ETM versions, explicitly control trace
unit using etm4_disable_trace_unit() and etm4_enable_trace_unit()
during CPU idle to comply with FEAT_TRF.
As a result, the save states for TRFCR_ELx and trcprgctlr are redundant,
remove them.
Fixes: f188b5e76a ("coresight: etm4x: Save/restore state across CPU low power states")
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Tested-by: James Clark <james.clark@linaro.org>
Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20251111-arm_coresight_power_management_fix-v6-6-f55553b6c8b3@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 64eb04ae54 ]
According to the software usage PKLXF in Arm ARM (ARM DDI 0487 L.a), a
Context synchronization event is required before enabling the trace
unit.
An ISB is added to meet this requirement, particularly for guarding the
operations in the flow:
etm4x_allow_trace()
`> kvm_tracing_set_el1_configuration()
`> write_sysreg_s(trfcr_while_in_guest, SYS_TRFCR_EL12)
Improved the barrier comments to provide more accurate information.
Fixes: 1ab3bb9df5 ("coresight: etm4x: Add necessary synchronization for sysreg access")
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Reviewed-by: Yeoreun Yun <yeoreum.yun@arm.com>
Tested-by: James Clark <james.clark@linaro.org>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20251111-arm_coresight_power_management_fix-v6-5-f55553b6c8b3@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 4dc4e22f95 ]
Since commit 4ff6039ffb ("coresight-etm4x: add isb() before reading
the TRCSTATR"), the code has incorrectly been polling the PMSTABLE bit
instead of the IDLE bit.
This commit corrects the typo.
Fixes: 4ff6039ffb ("coresight-etm4x: add isb() before reading the TRCSTATR")
Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Tested-by: James Clark <james.clark@linaro.org>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20251111-arm_coresight_power_management_fix-v6-4-f55553b6c8b3@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit ab3fde32af ]
The ETMv3 driver shares the same issue as ETMv4 regarding race
conditions when accessing the device mode.
This commit applies the same fix: ensuring that the device mode is
modified only by the target CPU to eliminate race conditions across
CPUs.
Fixes: 22fd532eaa ("coresight: etm3x: adding operation mode for etm_enable()")
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Tested-by: James Clark <james.clark@linaro.org>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20251111-arm_coresight_power_management_fix-v6-3-f55553b6c8b3@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 28eee21585 ]
When enabling a tracer via SysFS interface, the device mode may be set
by any CPU - not necessarily the target CPU. This can lead to race
condition in SMP, and may result in incorrect mode values being read.
Consider the following example, where CPU0 attempts to enable the tracer
on CPU1 (the target CPU):
CPU0 CPU1
etm4_enable()
` coresight_take_mode(SYSFS)
` etm4_enable_sysfs()
` smp_call_function_single() ----> etm4_enable_hw_smp_call()
/
/ CPU idle:
/ etm4_cpu_save()
/ ` coresight_get_mode()
Failed to enable h/w / ^^^
` coresight_set_mode(DISABLED) <-' Read the intermediate SYSFS mode
In this case, CPU0 initiates the operation by taking the SYSFS mode to
avoid conflicts with the Perf mode. It then sends an IPI to CPU1 to
configure the tracer registers. If any error occurs during this process,
CPU0 rolls back by setting the mode to DISABLED.
However, if CPU1 enters an idle state during this time, it might read
the intermediate SYSFS mode. As a result, the CPU PM flow could wrongly
save and restore tracer context that is actually disabled.
To resolve the issue, this commit moves the device mode setting logic on
the target CPU. This ensures that the device mode is only modified by
the target CPU, eliminating race condition between mode writes and reads
across CPUs.
An additional change introduces the etm4_disable_sysfs_smp_call()
function for SMP calls, which disables the tracer and explicitly set the
mode to DISABLED during SysFS operations. Rename
etm4_disable_hw_smp_call() to etm4_disable_sysfs_smp_call() for naming
consistency.
The flow is updated with this change:
CPU0 CPU1
etm4_enable()
` etm4_enable_sysfs()
` smp_call_function_single() ----> etm4_enable_hw_smp_call()
` coresight_take_mode(SYSFS)
Failed, set back to DISABLED
` coresight_set_mode(DISABLED)
CPU idle:
etm4_cpu_save()
` coresight_get_mode()
^^^
Read out the DISABLED mode
Fixes: c38a9ec2b2 ("coresight: etm4x: moving etm_drvdata::enable to atomic field")
Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com>
Reviewed-by: mike Leach <mike.leach@linaro.org>
Tested-by: James Clark <james.clark@linaro.org>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20251111-arm_coresight_power_management_fix-v6-2-f55553b6c8b3@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 693d1eaca9 ]
The device mode is defined as local type. This type cannot promise
SMP-safe access.
Change to atomic type and impose relax ordering, which ensures the
SMP-safe synchronisation and the ordering between the mode setting and
relevant operations.
Fixes: 22fd532eaa ("coresight: etm3x: adding operation mode for etm_enable()")
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Tested-by: James Clark <james.clark@linaro.org>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20251111-arm_coresight_power_management_fix-v6-1-f55553b6c8b3@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit b6c5f9454e ]
netdev ops must be called under instance lock or rtnl_lock, but
io_register_zcrx_ifq() isn't doing this for netdev_queue_get_dma_dev().
Fix this by taking the instance lock using netdev_get_by_index_lock().
Extended the instance lock section to include attaching a memory
provider. Could not move io_zcrx_create_area() outside, since the dmabuf
codepath IORING_ZCRX_AREA_DMABUF requires ifq->dev.
Fixes: 59b8b32ac8 ("io_uring/zcrx: add support for custom DMA devices")
Signed-off-by: David Wei <dw@davidwei.uk>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit c07a491c1b ]
Need to call netdev_get_by_index_lock() from io_uring/zcrx.c, but it is
currently private to net. Export the function in linux/netdevice.h.
Signed-off-by: David Wei <dw@davidwei.uk>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Stable-dep-of: b6c5f9454e ("io_uring/zcrx: call netdev_queue_get_dma_dev() under instance lock")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 5e88e86411 ]
In one of the error paths, the memory allocated for skb_rx is not freed.
Fix that by freeing it before returning.
Fixes: a910e4a94f ("cw1200: add driver for the ST-E CW1100 & CW1200 WLAN chipsets")
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Link: https://patch.msgid.link/20251110175316.106591-1-nihaal@cse.iitm.ac.in
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 10e1c77c36 ]
Commit b96bae3ae2 ("powerpc/32: Replace ASM exception exit by C
exception exit from ppc64") erroneouly copied to powerpc/32 the logic
from powerpc/64 based on feature CPU_FTR_STCX_CHECKS_ADDRESS which is
always 0 on powerpc/32.
Re-instate the logic implemented by commit b64f87c16f ("[POWERPC]
Avoid unpaired stwcx. on some processors") which is based on
CPU_FTR_NEED_PAIRED_STWCX feature.
Fixes: b96bae3ae2 ("powerpc/32: Replace ASM exception exit by C exception exit from ppc64")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/6040b5dbcf5cdaa1cd919fcf0790f12974ea6e5a.1757666244.git.christophe.leroy@csgroup.eu
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 7afe2383ef ]
The elfcorehdr segment in the kdump image stores information about the
memory regions (called crash memory ranges) that the kdump kernel must
capture.
When a memory hot-remove event occurs, the kernel regenerates the
elfcorehdr for the currently loaded kdump image to remove the
hot-removed memory from the crash memory ranges.
Call chain:
remove_mem_range()
update_crash_elfcorehdr()
arch_crash_handle_hotplug_event()
crash_handle_hotplug_event()
While removing the hot-removed memory from the crash memory ranges in
remove_mem_range(), if the removed memory lies within an existing crash
range, that range is split into two. During this split, the size of the
second range was being calculated incorrectly.
This leads to dump capture failure with makedumpfile with below error:
$ makedumpfile -l -d 31 /proc/vmcore /tmp/vmcore
readpage_elf: Attempt to read non-existent page at 0xbbdab0000.
readmem: type_addr: 0, addr:c000000bbdab7f00, size:16
validate_mem_section: Can't read mem_section array.
readpage_elf: Attempt to read non-existent page at 0xbbdab0000.
readmem: type_addr: 0, addr:c000000bbdab7f00, size:8
get_mm_sparsemem: Can't get the address of mem_section.
The updated crash memory range in PT_LOAD entry is holding incorrect
data (checkout FileSiz and MemSiz):
readelf -a /proc/vmcore
<snip...>
Type Offset VirtAddr PhysAddr
FileSiz MemSiz Flags Align
LOAD 0x0000000b013d0000 0xc000000b80000000 0x0000000b80000000
0xffffffffc0000000 0xffffffffc0000000 RWE 0x0
<snip...>
Update the size calculation for the new crash memory range to fix this
issue.
Note: This problem will not occur if the kdump kernel is loaded or
reloaded after a memory hot-remove operation.
Fixes: 849599b702 ("powerpc/crash: add crash memory hotplug support")
Reported-by: Shirisha G <shirisha@linux.ibm.com>
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20251105033941.1752287-1-sourabhjain@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit bb31fef0d0 ]
amd_pstate_change_mode_without_dvr_change() calls cppc_set_auto_sel()
for all the present CPUs.
However, this callpath eventually calls cppc_set_reg_val() which
accesses the per-cpu cpc_desc_ptr object. This object is initialized
only for online CPUs via acpi_soft_cpu_online() -->
__acpi_processor_start() --> acpi_cppc_processor_probe().
Hence, restrict calling cppc_set_auto_sel() to only the online CPUs.
Fixes: 3ca7bc818d ("cpufreq: amd-pstate: Add guided mode control support via sysfs")
Suggested-by: Mario Limonciello (AMD) (kernel.org) <superm1@kernel.org>
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
