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If smb311 posix is enabled, we send the intended mode for file
creation in the posix create context. Instead of using what's there on
the stack, create the mfsymlink file with 0644.
Fixes: ce558b0e17 ("smb3: Add posix create context for smb3.11 posix mounts")
Cc: stable@vger.kernel.org
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Tom Talpey <tom@talpey.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
The Microsoft Devkit 2023 is a an ARM64 based machine featuring a
Realtek 8153 USB3.0-to-GBit Ethernet adapter. As in their other
machines, Microsoft uses a custom USB device ID.
Add the respective ID values to the driver. This makes Ethernet work on
the MS Devkit device. The chip has been visually confirmed to be a
RTL8153.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20230111133228.190801-1-andre.przywara@arm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Commit 374146cad4 ("drm/vc4: Switch to drmm_mutex_init") converted,
among other functions, vc4_create_object() to use drmm_mutex_init().
However, that function is used to allocate a BO, and therefore the
mutex needs to be freed much sooner than when the DRM device is removed
from the system.
For each buffer allocation we thus end up allocating a small structure
as part of the DRM-managed mechanism that is never freed, eventually
leading us to no longer having any free memory anymore.
Let's switch back to mutex_init/mutex_destroy to deal with it properly.
Fixes: 374146cad4 ("drm/vc4: Switch to drmm_mutex_init")
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20230112091243.490799-1-maxime@cerno.tech
We are observing performance drop in many usecases which include
games, 3D benchmark applications,etc.. To solve this problem, We
are strictly not allowing top down flag enabled allocations to
steal the memory space from cpu visible region.
The idea is, we are sorting each order list entries in
ascending order and compare the last entry of each order
list in the freelist and return the max block.
This patch improves the 3D benchmark scores and solves
fragmentation issues.
All drm buddy selftests are verfied.
drm_buddy: pass:6 fail:0 skip:0 total:6
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230112120027.3072-1-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König <christian.koenig@amd.com>
CC: Cc: stable@vger.kernel.org # 5.18+
The branch is explicitly taken if ttm == NULL which means that to avoid
a null pointer reference the ttm object can not be used inside. Switch
back to dst_mem to avoid kernel oops'es.
This fixes kernel oops'es with any buffer objects which don't have ttm_tt,
e.g. with vram based screen objects on vmwgfx.
Signed-off-by: Zack Rusin <zackr@vmware.com>
Fixes: e3c92eb4a8 ("drm/ttm: rework on ttm_resource to use size_t type")
Cc: Somalapuram Amaranath <Amaranath.Somalapuram@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230111175015.1134923-1-zack@kde.org
Signed-off-by: Christian König <christian.koenig@amd.com>
There's several things in this pull request:
- Fixes for long standing issues with accesses to spidev->spi during
teardown in the spidev userspace driver.
- Rename the newly added spi-cs-setup-ns DT property to be more in line
with our other delay properties before it becomes ABI.
- A few driver specific fixes.
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Merge tag 'spi-fix-v6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
- Fixes for long standing issues with accesses to spidev->spi during
teardown in the spidev userspace driver.
- Rename the newly added spi-cs-setup-ns DT property to be more in line
with our other delay properties before it becomes ABI.
- A few driver specific fixes.
* tag 'spi-fix-v6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: spidev: remove debug messages that access spidev->spi without locking
spi: spidev: fix a race condition when accessing spidev->spi
spi: Rename spi-cs-setup-ns property to spi-cs-setup-delay-ns
spi: dt-bindings: Rename spi-cs-setup-ns to spi-cs-setup-delay-ns
spi: cadence: Fix busy cycles calculation
spi: mediatek: Enable irq before the spi registration
A couple of small driver specific fixes, one of which I queued for 6.1
but didn't actually send out so has had *plenty* of testing in -next.
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Merge tag 'regulator-fix-v6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"A couple of small driver specific fixes, one of which I queued for 6.1
but didn't actually send out so has had *plenty* of testing in -next"
* tag 'regulator-fix-v6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: qcom-rpmh: PM8550 ldo11 regulator is an nldo
regulator: da9211: Use irq handler when ready
There's quite a few fixes here, mostly board specific apart from the SOF
power management ones. We also have some new quirks and Kconfig tweaks
to enable existing code on new platforms, and a one liner which exposes
the SOF firmware state in debugfs to aid with debugging.
There's also a SPI fix that I mistakenly put in the wrong queue and
did some merges on top of before I noticed, it seemed more trouble than
it was worth to unpick things. A copy of the same patch is also in the
spi tree.
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Merge tag 'asoc-fix-v6.2-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v6.2
There's quite a few fixes here, mostly board specific apart from the SOF
power management ones. We also have some new quirks and Kconfig tweaks
to enable existing code on new platforms, and a one liner which exposes
the SOF firmware state in debugfs to aid with debugging.
There's also a SPI fix that I mistakenly put in the wrong queue and
did some merges on top of before I noticed, it seemed more trouble than
it was worth to unpick things. A copy of the same patch is also in the
spi tree.
10 small fixes (less the one that cleaned up a reverted removal), 9 in
drivers of which the ufs one is the most critical. The single core
patch is a minor speedup to error handling.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Ten small fixes (less the one that cleaned up a reverted removal),
nine in drivers of which the ufs one is the most critical.
The single core patch is a minor speedup to error handling"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: libsas: Grab the ATA port lock in sas_ata_device_link_abort()
scsi: hisi_sas: Fix tag freeing for reserved tags
scsi: ufs: core: WLUN suspend SSU/enter hibern8 fail recovery
scsi: scsi_debug: Delete unreachable code in inquiry_vpd_b0()
scsi: mpi3mr: Refer CONFIG_SCSI_MPI3MR in Makefile
scsi: core: scsi_error: Do not queue pointless abort workqueue functions
scsi: storvsc: Fix swiotlb bounce buffer leak in confidential VM
scsi: iscsi: Fix multiple iSCSI session unbind events sent to userspace
scsi: mpi3mr: Remove usage of dma_get_required_mask() API
scsi: mpt3sas: Remove usage of dma_get_required_mask() API
The HP Spectre x360 13-aw0xxx devices use the ALC285 codec with GPIO 0x04
controlling the micmute LED and COEF 0x0b index 8 controlling the mute LED.
A quirk was added to make these work as well as a fixup.
Signed-off-by: Luka Guzenko <l.guzenko@web.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230110202514.2792-1-l.guzenko@web.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Commit 3f4c8211d9 ("x86/mm: Use mm_alloc() in poking_init()") broke
the kernel for running as Xen PV guest.
It seems as if the new address space is never activated before being
used, resulting in Xen rejecting to accept the new CR3 value (the PGD
isn't pinned).
Fix that by adding the now missing call of paravirt_arch_dup_mmap() to
poking_init(). That call was previously done by dup_mm()->dup_mmap() and
it is a NOP for all cases but for Xen PV, where it is just doing the
pinning of the PGD.
Fixes: 3f4c8211d9 ("x86/mm: Use mm_alloc() in poking_init()")
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20230109150922.10578-1-jgross@suse.com
Add timeout polling wait for auxiliary timestamps snapshot FIFO clear bit
(ATSFC) to clear. This is to ensure no residue fifo value is being read
erroneously.
Fixes: f4da56529d ("net: stmmac: Add support for external trigger timestamping")
Cc: <stable@vger.kernel.org> # 5.10.x
Signed-off-by: Noor Azura Ahmad Tarmizi <noor.azura.ahmad.tarmizi@intel.com>
Link: https://lore.kernel.org/r/20230111050200.2130-1-noor.azura.ahmad.tarmizi@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently the driver sets the port invalid if one phy in the port is not
enabled, which may cause issues in expander situation. In directly attached
situation, if phy up doesn't occur in time when refreshing port id, the
port is incorrectly set to invalid which will also cause disk lost.
Therefore set a port invalid only if there are no devices attached to the
port.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1672805000-141102-3-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently clear task set is used to abort all commands remaining in the
disk when the SAS disk is discovered, and if the disk is discovered by two
initiators, other I_T nexuses are also affected. So use abort task set
instead and take effect only on the specified I_T nexus.
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1672805000-141102-2-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2023-01-10 (ixgbe, igc, iavf)
This series contains updates to ixgbe, igc, and iavf drivers.
Yang Yingliang adds calls to pci_dev_put() for proper ref count tracking
on ixgbe.
Christopher adds setting of Toggle on Target Time bits for proper
pulse per second (PPS) synchronization for igc.
Daniil Tatianin fixes, likely, copy/paste issue that misreported
destination instead of source for IP mask for iavf error.
* '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
iavf/iavf_main: actually log ->src mask when talking about it
igc: Fix PPS delta between two synchronized end-points
ixgbe: fix pci device refcount leak
====================
Link: https://lore.kernel.org/r/20230110223825.648544-1-anthony.l.nguyen@intel.com
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Before the commit under Fixes the page would have been released
from the pool before the napi_alloc_skb() call, so normal page
freeing was fine (released page == no longer in the pool).
After the change we just mark the page for recycling so it's still
in the pool if the skb alloc fails, we need to recycle.
Same commit added the same bug in the new bnxt_rx_multi_page_skb().
Fixes: 1dc4c557bf ("bnxt: adding bnxt_xdp_build_skb to build skb from multibuffer xdp_buff")
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Link: https://lore.kernel.org/r/20230111042547.987749-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently, it used old rss size to get current tc mode. As a result, the
rss size is updated, but the tc mode is still configured based on the old
rss size.
So this patch fixes it by using the new rss size in both process.
Fixes: 93969dc14f ("net: hns3: refactor VF rss init APIs with new common rss init APIs")
Signed-off-by: Jie Wang <wangjie125@huawei.com>
Signed-off-by: Hao Lan <lanhao@huawei.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Link: https://lore.kernel.org/r/20230110115359.10163-1-lanhao@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
stress_hpt_timer_fn() is only used in hash_utils.c, make it static.
Fixes: 6b34a099fa ("powerpc/64s/hash: add stress_hpt kernel boot option to increase hash faults")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221228093603.3166599-1-yangyingliang@huawei.com
- Make 'perf kmem' cope with the removal of some kmem:kmem_cache_alloc_node and
kmem:kmalloc_node in the 11e9734bcb ("mm/slab_common: unify NUMA and
UMA version of tracepoints") commit, making sure it works with Linux >= 6.2 as well
as with older kernels where those tracepoints are present.
- Also make it handle the new "node" kmem:kmalloc and kmem:kmem_cache_alloc tracepoint
field introduced in that same commit.
- Fix hardware tracing PMU address filter duplicate symbol selection, that was
preventing to match with static functions with the same name present in different
object files.
- Fix regression on what linux/types.h file gets used to build the "BPF prologue"
'perf test' entry, the system one lacks the fmode_t definition used in this test,
so provide that type in the test itself.
- Avoid build breakage with libbpf < 0.8.0 + LIBBPF_DYNAMIC=1. If the user asks for
linking with the libbpf package provided by the distro, then it has to be >= 0.8.0.
Using the libbpf supplied with the kernel would be a fallback in that case.
- Fix the build when libbpf isn't available or explicitly disabled via NO_LIBBPF=1.
- Don't try to install libtraceevent plugins as its not anymore in the kernel sources
and will thus always fail.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-fixes-for-v6.2-2-2023-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Make 'perf kmem' cope with the removal of some
kmem:kmem_cache_alloc_node and kmem:kmalloc_node in the
11e9734bcb ("mm/slab_common: unify NUMA and UMA version of
tracepoints") commit, making sure it works with Linux >= 6.2 as well
as with older kernels where those tracepoints are present.
- Also make it handle the new "node" kmem:kmalloc and
kmem:kmem_cache_alloc tracepoint field introduced in that same
commit.
- Fix hardware tracing PMU address filter duplicate symbol selection,
that was preventing to match with static functions with the same name
present in different object files.
- Fix regression on what linux/types.h file gets used to build the "BPF
prologue" 'perf test' entry, the system one lacks the fmode_t
definition used in this test, so provide that type in the test
itself.
- Avoid build breakage with libbpf < 0.8.0 + LIBBPF_DYNAMIC=1. If the
user asks for linking with the libbpf package provided by the distro,
then it has to be >= 0.8.0. Using the libbpf supplied with the kernel
would be a fallback in that case.
- Fix the build when libbpf isn't available or explicitly disabled via
NO_LIBBPF=1.
- Don't try to install libtraceevent plugins as its not anymore in the
kernel sources and will thus always fail.
* tag 'perf-tools-fixes-for-v6.2-2-2023-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
perf auxtrace: Fix address filter duplicate symbol selection
perf bpf: Avoid build breakage with libbpf < 0.8.0 + LIBBPF_DYNAMIC=1
perf build: Fix build error when NO_LIBBPF=1
perf tools: Don't install libtraceevent plugins as its not anymore in the kernel sources
perf kmem: Support field "node" in evsel__process_alloc_event() coping with recent tracepoint restructuring
perf kmem: Support legacy tracepoints
perf build: Properly guard libbpf includes
perf tests bpf prologue: Fix bpf-script-test-prologue test compile issue with clang
In commit 14243b3871 ("KVM: x86/xen: Add KVM_IRQ_ROUTING_XEN_EVTCHN
and event channel delivery") the clever version of me left some helpful
notes for those who would come after him:
/*
* For the irqfd workqueue, using the main kvm->lock mutex is
* fine since this function is invoked from kvm_set_irq() with
* no other lock held, no srcu. In future if it will be called
* directly from a vCPU thread (e.g. on hypercall for an IPI)
* then it may need to switch to using a leaf-node mutex for
* serializing the shared_info mapping.
*/
mutex_lock(&kvm->lock);
In commit 2fd6df2f2b ("KVM: x86/xen: intercept EVTCHNOP_send from guests")
the other version of me ran straight past that comment without reading it,
and introduced a potential deadlock by taking vcpu->mutex and kvm->lock
in the wrong order.
Solve this as originally suggested, by adding a leaf-node lock in the Xen
state rather than using kvm->lock for it.
Fixes: 2fd6df2f2b ("KVM: x86/xen: intercept EVTCHNOP_send from guests")
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20230111180651.14394-4-dwmw2@infradead.org>
[Rebase, add docs. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
is_mmconf_reserved() takes a "with_e820" parameter that only determines the
message logged if it finds the MMCONFIG region is reserved. Pass the
message directly, which will simplify a future patch that adds a new way of
looking for that reservation. No functional change intended.
Link: https://lore.kernel.org/r/20230110180243.1590045-2-helgaas@kernel.org
Tested-by: Tony Luck <tony.luck@intel.com>
Tested-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Tested-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
"about.html" is available only for the alabaster theme [1].
Unconditionally putting it to html_sidebars prevents us from
using other themes which respect html_sidebars.
Remove about.html from the initialization and insert it at the
front for the alabaster theme.
Link: [1] https://alabaster.readthedocs.io/en/latest/installation.html#sidebars
Fixes: d5389d3145 ("docs: Switch the default HTML theme to alabaster")
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/4b162dbe-2a7f-1710-93e0-754cf8680aae@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Documentation/virt/kvm/locking.rst tells us that kvm->lock is taken outside
vcpu->mutex. But that doesn't actually happen very often; it's only in
some esoteric cases like migration with AMD SEV. This means that lockdep
usually doesn't notice, and doesn't do its job of keeping us honest.
Ensure that lockdep *always* knows about the ordering of these two locks,
by briefly taking vcpu->mutex in kvm_vm_ioctl_create_vcpu() while kvm->lock
is held.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20230111180651.14394-3-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The kvm_xen_update_runstate_guest() function can be called when the vCPU
is being scheduled out, from a preempt notifier. It *opportunistically*
updates the runstate area in the guest memory, if the gfn_to_pfn_cache
which caches the appropriate address is still valid.
If there is *contention* when it attempts to obtain gpc->lock, then
locking inside the priority inheritance checks may cause a deadlock.
Lockdep reports:
[13890.148997] Chain exists of:
&gpc->lock --> &p->pi_lock --> &rq->__lock
[13890.149002] Possible unsafe locking scenario:
[13890.149003] CPU0 CPU1
[13890.149004] ---- ----
[13890.149005] lock(&rq->__lock);
[13890.149007] lock(&p->pi_lock);
[13890.149009] lock(&rq->__lock);
[13890.149011] lock(&gpc->lock);
[13890.149013]
*** DEADLOCK ***
In the general case, if there's contention for a read lock on gpc->lock,
that's going to be because something else is either invalidating or
revalidating the cache. Either way, we've raced with seeing it in an
invalid state, in which case we would have aborted the opportunistic
update anyway.
So in the 'atomic' case when called from the preempt notifier, just
switch to using read_trylock() and avoid the PI handling altogether.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20230111180651.14394-2-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In commit 5ec3289b31 ("KVM: x86/xen: Compatibility fixes for shared runstate
area") we declared it safe to obtain two gfn_to_pfn_cache locks at the same
time:
/*
* The guest's runstate_info is split across two pages and we
* need to hold and validate both GPCs simultaneously. We can
* declare a lock ordering GPC1 > GPC2 because nothing else
* takes them more than one at a time.
*/
However, we forgot to tell lockdep. Do so, by setting a subclass on the
first lock before taking the second.
Fixes: 5ec3289b31 ("KVM: x86/xen: Compatibility fixes for shared runstate area")
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20230111180651.14394-1-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
- Fix the PMCR_EL0 reset value after the PMU rework
- Correctly handle S2 fault triggered by a S1 page table walk
by not always classifying it as a write, as this breaks on
R/O memslots
- Document why we cannot exit with KVM_EXIT_MMIO when taking
a write fault from a S1 PTW on a R/O memslot
- Put the Apple M2 on the naughty step for not being able to
correctly implement the vgic SEIS feature, just liek the M1
before it
- Reviewer updates: Alex is stepping down, replaced by Zenghui
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Merge tag 'kvmarm-fixes-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
KVM/arm64 fixes for 6.2, take #1
- Fix the PMCR_EL0 reset value after the PMU rework
- Correctly handle S2 fault triggered by a S1 page table walk
by not always classifying it as a write, as this breaks on
R/O memslots
- Document why we cannot exit with KVM_EXIT_MMIO when taking
a write fault from a S1 PTW on a R/O memslot
- Put the Apple M2 on the naughty step for not being able to
correctly implement the vgic SEIS feature, just liek the M1
before it
- Reviewer updates: Alex is stepping down, replaced by Zenghui
kvm->srcu is taken in KVM_RUN and several other vCPU ioctls, therefore
vcpu->mutex is susceptible to the same deadlock that is documented
for kvm->slots_lock. The same holds for kvm->lock, since kvm->lock
is held outside vcpu->mutex. Fix the documentation and rearrange it
to highlight the difference between these locks and kvm->slots_arch_lock,
and how kvm->slots_arch_lock can be useful while processing a vmexit.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When a match has been made to the nth duplicate symbol, return
success not error.
Example:
Before:
$ cat file.c
cat: file.c: No such file or directory
$ cat file1.c
#include <stdio.h>
static void func(void)
{
printf("First func\n");
}
void other(void);
int main()
{
func();
other();
return 0;
}
$ cat file2.c
#include <stdio.h>
static void func(void)
{
printf("Second func\n");
}
void other(void)
{
func();
}
$ gcc -Wall -Wextra -o test file1.c file2.c
$ perf record -e intel_pt//u --filter 'filter func @ ./test' -- ./test
Multiple symbols with name 'func'
#1 0x1149 l func
which is near main
#2 0x1179 l func
which is near other
Disambiguate symbol name by inserting #n after the name e.g. func #2
Or select a global symbol by inserting #0 or #g or #G
Failed to parse address filter: 'filter func @ ./test'
Filter format is: filter|start|stop|tracestop <start symbol or address> [/ <end symbol or size>] [@<file name>]
Where multiple filters are separated by space or comma.
$ perf record -e intel_pt//u --filter 'filter func #2 @ ./test' -- ./test
Failed to parse address filter: 'filter func #2 @ ./test'
Filter format is: filter|start|stop|tracestop <start symbol or address> [/ <end symbol or size>] [@<file name>]
Where multiple filters are separated by space or comma.
After:
$ perf record -e intel_pt//u --filter 'filter func #2 @ ./test' -- ./test
First func
Second func
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.016 MB perf.data ]
$ perf script --itrace=b -Ftime,flags,ip,sym,addr --ns
1231062.526977619: tr strt 0 [unknown] => 558495708179 func
1231062.526977619: tr end call 558495708188 func => 558495708050 _init
1231062.526979286: tr strt 0 [unknown] => 55849570818d func
1231062.526979286: tr end return 55849570818f func => 55849570819d other
Fixes: 1b36c03e35 ("perf record: Add support for using symbols in address filters")
Reported-by: Dmitrii Dolgov <9erthalion6@gmail.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Dmitry Dolgov <9erthalion6@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230110185659.15979-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
During kexec on ARM device, we notice that device_shutdown() only calls
pm_runtime_force_suspend() while shutting down the GPU. This means the GPU
kthread is still running and further, there maybe active submits.
This causes all kinds of issues during a kexec reboot:
Warning from shutdown path:
[ 292.509662] WARNING: CPU: 0 PID: 6304 at [...] adreno_runtime_suspend+0x3c/0x44
[ 292.509863] Hardware name: Google Lazor (rev3 - 8) with LTE (DT)
[ 292.509872] pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 292.509881] pc : adreno_runtime_suspend+0x3c/0x44
[ 292.509891] lr : pm_generic_runtime_suspend+0x30/0x44
[ 292.509905] sp : ffffffc014473bf0
[...]
[ 292.510043] Call trace:
[ 292.510051] adreno_runtime_suspend+0x3c/0x44
[ 292.510061] pm_generic_runtime_suspend+0x30/0x44
[ 292.510071] pm_runtime_force_suspend+0x54/0xc8
[ 292.510081] adreno_shutdown+0x1c/0x28
[ 292.510090] platform_shutdown+0x2c/0x38
[ 292.510104] device_shutdown+0x158/0x210
[ 292.510119] kernel_restart_prepare+0x40/0x4c
And here from GPU kthread, an SError OOPs:
[ 192.648789] el1h_64_error+0x7c/0x80
[ 192.648812] el1_interrupt+0x20/0x58
[ 192.648833] el1h_64_irq_handler+0x18/0x24
[ 192.648854] el1h_64_irq+0x7c/0x80
[ 192.648873] local_daif_inherit+0x10/0x18
[ 192.648900] el1h_64_sync_handler+0x48/0xb4
[ 192.648921] el1h_64_sync+0x7c/0x80
[ 192.648941] a6xx_gmu_set_oob+0xbc/0x1fc
[ 192.648968] a6xx_hw_init+0x44/0xe38
[ 192.648991] msm_gpu_hw_init+0x48/0x80
[ 192.649013] msm_gpu_submit+0x5c/0x1a8
[ 192.649034] msm_job_run+0xb0/0x11c
[ 192.649058] drm_sched_main+0x170/0x434
[ 192.649086] kthread+0x134/0x300
[ 192.649114] ret_from_fork+0x10/0x20
Fix by calling adreno_system_suspend() in the device_shutdown() path.
[ Applied Rob Clark feedback on fixing adreno_unbind() similarly, also
tested as above. ]
Cc: Rob Clark <robdclark@chromium.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ricardo Ribalda <ribalda@chromium.org>
Cc: Ross Zwisler <zwisler@kernel.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/517633/
Link: https://lore.kernel.org/r/20230109222547.1368644-1-joel@joelfernandes.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
CHICKEN_RASTER_{1,2} got overlooked with the move done in commit
a9e69428b1 ("drm/i915: Define MCR registers explicitly"). Registers
from the SVG unit became multicast as of Xe_HP graphics.
BSpec: 66534
Fixes: a9e69428b1 ("drm/i915: Define MCR registers explicitly")
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230105133701.19556-1-gustavo.sousa@intel.com
(cherry picked from commit 10903b0a0f)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Use READ_ONCE() before cmpxchg() to prevent that the compiler generates
code that fetches the to be compared old value several times from memory.
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Link: https://lore.kernel.org/r/20230109145456.2895385-1-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Make sure that *ptr__ within arch_this_cpu_to_op_simple() is only
dereferenced once by using READ_ONCE(). Otherwise the compiler could
generate incorrect code.
Cc: <stable@vger.kernel.org>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
The current cmpxchg_double() loops within the perf hw sampling code do not
have READ_ONCE() semantics to read the old value from memory. This allows
the compiler to generate code which reads the "old" value several times
from memory, which again allows for inconsistencies.
For example:
/* Reset trailer (using compare-double-and-swap) */
do {
te_flags = te->flags & ~SDB_TE_BUFFER_FULL_MASK;
te_flags |= SDB_TE_ALERT_REQ_MASK;
} while (!cmpxchg_double(&te->flags, &te->overflow,
te->flags, te->overflow,
te_flags, 0ULL));
The compiler could generate code where te->flags used within the
cmpxchg_double() call may be refetched from memory and which is not
necessarily identical to the previous read version which was used to
generate te_flags. Which in turn means that an incorrect update could
happen.
Fix this by adding READ_ONCE() semantics to all cmpxchg_double()
loops. Given that READ_ONCE() cannot generate code on s390 which atomically
reads 16 bytes, use a private compare-and-swap-double implementation to
achieve that.
Also replace cmpxchg_double() with the private implementation to be able to
re-use the old value within the loops.
As a side effect this converts the whole code to only use bit fields
to read and modify bits within the hws trailer header.
Reported-by: Alexander Gordeev <agordeev@linux.ibm.com>
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Acked-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.ibm.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/linux-s390/Y71QJBhNTIatvxUT@osiris/T/#ma14e2a5f7aa8ed4b94b6f9576799b3ad9c60f333
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
The newly added spi-cs-setup-ns doesn't really fit with the existing
property names for delays, rename it so that it does before it makes it
into a release and becomes ABI.
The two debug messages in spidev_open() dereference spidev->spi without
taking the lock and without checking if it's not null. This can lead to
a crash. Drop the messages as they're not needed - the user-space will
get informed about ENOMEM with the syscall return value.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20230106100719.196243-2-brgl@bgdev.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
There's a spinlock in place that is taken in file_operations callbacks
whenever we check if spidev->spi is still alive (not null). It's also
taken when spidev->spi is set to NULL in remove().
This however doesn't protect the code against driver unbind event while
one of the syscalls is still in progress. To that end we need a lock taken
continuously as long as we may still access spidev->spi. As both the file
ops and the remove callback are never called from interrupt context, we
can replace the spinlock with a mutex.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20230106100719.196243-1-brgl@bgdev.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
The total cork length created by ip6_append_data includes extension
headers, so we must exclude them when comparing them against the
IPV6_CHECKSUM offset which does not include extension headers.
Reported-by: Kyle Zeng <zengyhkyle@gmail.com>
Fixes: 357b40a18b ("[IPV6]: IPV6_CHECKSUM socket option can corrupt kernel memory")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 4a16dd9d18 ("drm/nouveau/kms: switch to drm fbdev helpers")
converted nouveau to generic fbdev emulation. The driver's internal
implementation later got accidentally restored during a merge commit.
Remove the file from the driver. No functional changes.
v2:
* point Fixes tag to merge commit (Alex)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Fixes: 4e291f2f58 ("Merge tag 'drm-misc-next-2022-11-10-1' of git://anongit.freedesktop.org/drm/drm-misc into drm-next")
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Karol Herbst <kherbst@redhat.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20230110123526.28770-1-tzimmermann@suse.de
If ptp was not enabled due to missing IRQ for instance,
lan966x_ptp_deinit() will dereference NULL pointers.
Fixes: d096459494 ("net: lan966x: Add support for ptp clocks")
Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Current imc-pmu code triggers a WARNING with CONFIG_DEBUG_ATOMIC_SLEEP
and CONFIG_PROVE_LOCKING enabled, while running a thread_imc event.
Command to trigger the warning:
# perf stat -e thread_imc/CPM_CS_FROM_L4_MEM_X_DPTEG/ sleep 5
Performance counter stats for 'sleep 5':
0 thread_imc/CPM_CS_FROM_L4_MEM_X_DPTEG/
5.002117947 seconds time elapsed
0.000131000 seconds user
0.001063000 seconds sys
Below is snippet of the warning in dmesg:
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580
in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 2869, name: perf-exec
preempt_count: 2, expected: 0
4 locks held by perf-exec/2869:
#0: c00000004325c540 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: bprm_execve+0x64/0xa90
#1: c00000004325c5d8 (&sig->exec_update_lock){++++}-{3:3}, at: begin_new_exec+0x460/0xef0
#2: c0000003fa99d4e0 (&cpuctx_lock){-...}-{2:2}, at: perf_event_exec+0x290/0x510
#3: c000000017ab8418 (&ctx->lock){....}-{2:2}, at: perf_event_exec+0x29c/0x510
irq event stamp: 4806
hardirqs last enabled at (4805): [<c000000000f65b94>] _raw_spin_unlock_irqrestore+0x94/0xd0
hardirqs last disabled at (4806): [<c0000000003fae44>] perf_event_exec+0x394/0x510
softirqs last enabled at (0): [<c00000000013c404>] copy_process+0xc34/0x1ff0
softirqs last disabled at (0): [<0000000000000000>] 0x0
CPU: 36 PID: 2869 Comm: perf-exec Not tainted 6.2.0-rc2-00011-g1247637727f2 #61
Hardware name: 8375-42A POWER9 0x4e1202 opal:v7.0-16-g9b85f7d961 PowerNV
Call Trace:
dump_stack_lvl+0x98/0xe0 (unreliable)
__might_resched+0x2f8/0x310
__mutex_lock+0x6c/0x13f0
thread_imc_event_add+0xf4/0x1b0
event_sched_in+0xe0/0x210
merge_sched_in+0x1f0/0x600
visit_groups_merge.isra.92.constprop.166+0x2bc/0x6c0
ctx_flexible_sched_in+0xcc/0x140
ctx_sched_in+0x20c/0x2a0
ctx_resched+0x104/0x1c0
perf_event_exec+0x340/0x510
begin_new_exec+0x730/0xef0
load_elf_binary+0x3f8/0x1e10
...
do not call blocking ops when !TASK_RUNNING; state=2001 set at [<00000000fd63e7cf>] do_nanosleep+0x60/0x1a0
WARNING: CPU: 36 PID: 2869 at kernel/sched/core.c:9912 __might_sleep+0x9c/0xb0
CPU: 36 PID: 2869 Comm: sleep Tainted: G W 6.2.0-rc2-00011-g1247637727f2 #61
Hardware name: 8375-42A POWER9 0x4e1202 opal:v7.0-16-g9b85f7d961 PowerNV
NIP: c000000000194a1c LR: c000000000194a18 CTR: c000000000a78670
REGS: c00000004d2134e0 TRAP: 0700 Tainted: G W (6.2.0-rc2-00011-g1247637727f2)
MSR: 9000000000021033 <SF,HV,ME,IR,DR,RI,LE> CR: 48002824 XER: 00000000
CFAR: c00000000013fb64 IRQMASK: 1
The above warning triggered because the current imc-pmu code uses mutex
lock in interrupt disabled sections. The function mutex_lock()
internally calls __might_resched(), which will check if IRQs are
disabled and in case IRQs are disabled, it will trigger the warning.
Fix the issue by changing the mutex lock to spinlock.
Fixes: 8f95faaac5 ("powerpc/powernv: Detect and create IMC device")
Reported-by: Michael Petlan <mpetlan@redhat.com>
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
[mpe: Fix comments, trim oops in change log, add reported-by tags]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230106065157.182648-1-kjain@linux.ibm.com
The ld_version() function computes the wrong version value for certain
ld versions such as the following:
$ ld --version
GNU ld (GNU Binutils; SUSE Linux Enterprise 15)
2.37.20211103-150100.7.37
For input 2.37.20211103, the value computed is 202348030000 which is
higher than the value for a later version like 2.39.0, which is
23900000.
This issue was highlighted because with the above ld version, the
powerpc kernel build started failing with ld error: "unrecognized option
--no-warn-rwx-segments". This was caused due to the recent commit
579aee9fc5 ("powerpc: suppress some linker warnings in recent linker
versions") which added the --no-warn-rwx-segments linker flag if the ld
version is greater than 2.39.
Due to the bug in ld_version(), ld version 2.37.20111103 is wrongly
calculated to be greater than 2.39 and the unsupported flag is added.
To fix it, if version is of the form x.y.z and length(z) == 8, then most
probably it is a date [yyyymmdd] commonly used for release snapshots and
not an actual new version. Hence, ignore the date part replacing it with
0.
Fixes: 579aee9fc5 ("powerpc: suppress some linker warnings in recent linker versions")
Signed-off-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
[mpe: Tweak change log wording/formatting, add Fixes tag]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230104202437.90039-1-ojaswin@linux.ibm.com
Make sure to free cifs_ses::auth_key.response before allocating it as
we might end up leaking memory in reconnect or mounting.
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Users have reported the following error on every 600 seconds
(SMB_INTERFACE_POLL_INTERVAL) when mounting SMB1 shares:
CIFS: VFS: \\srv\share error -5 on ioctl to get interface list
It's supported only by SMB2+, so do not query network interfaces on
SMB1 mounts.
Fixes: 6e1c1c08cd ("cifs: periodically query network interfaces from server")
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Tom Talpey <tom@talpey.com>
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2023-01-09 (ice)
This series contains updates to ice driver only.
Jiasheng Jiang frees allocated cmd_buf if write_buf allocation failed to
prevent memory leak.
Yuan Can adds check, and proper cleanup, of gnss_tty_port allocation call
to avoid memory leaks.
* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
ice: Add check for kzalloc
ice: Fix potential memory leak in ice_gnss_tty_write()
====================
Link: https://lore.kernel.org/r/20230109225358.3478060-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
While experimenting with applying noqueue to a classful queue discipline,
we discovered a NULL pointer dereference in the __dev_queue_xmit()
path that generates a kernel OOPS:
# dev=enp0s5
# tc qdisc replace dev $dev root handle 1: htb default 1
# tc class add dev $dev parent 1: classid 1:1 htb rate 10mbit
# tc qdisc add dev $dev parent 1:1 handle 10: noqueue
# ping -I $dev -w 1 -c 1 1.1.1.1
[ 2.172856] BUG: kernel NULL pointer dereference, address: 0000000000000000
[ 2.173217] #PF: supervisor instruction fetch in kernel mode
...
[ 2.178451] Call Trace:
[ 2.178577] <TASK>
[ 2.178686] htb_enqueue+0x1c8/0x370
[ 2.178880] dev_qdisc_enqueue+0x15/0x90
[ 2.179093] __dev_queue_xmit+0x798/0xd00
[ 2.179305] ? _raw_write_lock_bh+0xe/0x30
[ 2.179522] ? __local_bh_enable_ip+0x32/0x70
[ 2.179759] ? ___neigh_create+0x610/0x840
[ 2.179968] ? eth_header+0x21/0xc0
[ 2.180144] ip_finish_output2+0x15e/0x4f0
[ 2.180348] ? dst_output+0x30/0x30
[ 2.180525] ip_push_pending_frames+0x9d/0xb0
[ 2.180739] raw_sendmsg+0x601/0xcb0
[ 2.180916] ? _raw_spin_trylock+0xe/0x50
[ 2.181112] ? _raw_spin_unlock_irqrestore+0x16/0x30
[ 2.181354] ? get_page_from_freelist+0xcd6/0xdf0
[ 2.181594] ? sock_sendmsg+0x56/0x60
[ 2.181781] sock_sendmsg+0x56/0x60
[ 2.181958] __sys_sendto+0xf7/0x160
[ 2.182139] ? handle_mm_fault+0x6e/0x1d0
[ 2.182366] ? do_user_addr_fault+0x1e1/0x660
[ 2.182627] __x64_sys_sendto+0x1b/0x30
[ 2.182881] do_syscall_64+0x38/0x90
[ 2.183085] entry_SYSCALL_64_after_hwframe+0x63/0xcd
...
[ 2.187402] </TASK>
Previously in commit d66d6c3152 ("net: sched: register noqueue
qdisc"), NULL was set for the noqueue discipline on noqueue init
so that __dev_queue_xmit() falls through for the noqueue case. This
also sets a bypass of the enqueue NULL check in the
register_qdisc() function for the struct noqueue_disc_ops.
Classful queue disciplines make it past the NULL check in
__dev_queue_xmit() because the discipline is set to htb (in this case),
and then in the call to __dev_xmit_skb(), it calls into htb_enqueue()
which grabs a leaf node for a class and then calls qdisc_enqueue() by
passing in a queue discipline which assumes ->enqueue() is not set to NULL.
Fix this by not allowing classes to be assigned to the noqueue
discipline. Linux TC Notes states that classes cannot be set to
the noqueue discipline. [1] Let's enforce that here.
Links:
1. https://linux-tc-notes.sourceforge.net/tc/doc/sch_noqueue.txt
Fixes: d66d6c3152 ("net: sched: register noqueue qdisc")
Cc: stable@vger.kernel.org
Signed-off-by: Frederick Lawler <fred@cloudflare.com>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/r/20230109163906.706000-1-fred@cloudflare.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The point bo->kfd_bo is NULL for queue's write pointer BO
when creating queue on mGPU. To avoid using the pointer
fixes the error.
Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
