The Trace Filtering support (FEAT_TRF) ensures that the ETM
can be prohibited from generating any trace for a given EL.
This is much stricter knob, than the TRCVICTLR exception level
masks, which doesn't prevent the ETM from generating Context
packets for an "excluded" EL. At the moment, we do a onetime
enable trace at user and kernel and leave it untouched for the
kernel life time. This implies that the ETM could potentially
generate trace packets containing the kernel addresses, and
thus leaking the kernel virtual address in the trace.
This patch makes the switch dynamic, by honoring the filters
set by the user and enforcing them in the TRFCR controls.
We also rename the cpu_enable_tracing() appropriately to
cpu_detect_trace_filtering() and the drvdata member
trfc => trfcr to indicate the "value" of the TRFCR_EL1.
Bug: 213931796
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Al Grant <al.grant@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20210914102641.1852544-3-suzuki.poulose@arm.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
(cherry picked from commit 5f6fd1aa8c)
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Change-Id: I20432aa7cfd4375e1cdb9d256a2adc9df548d68e
The AUX bounce buffer is allocated with API dma_alloc_coherent(), in the
low level's architecture code, e.g. for Arm64, it maps the memory with
the attribution "Normal non-cacheable"; this can be concluded from the
definition for pgprot_dmacoherent() in arch/arm64/include/asm/pgtable.h.
Later when access the AUX bounce buffer, since the memory mapping is
non-cacheable, it's low efficiency due to every load instruction must
reach out DRAM.
This patch changes to allocate pages with dma_alloc_noncoherent(), the
driver can access the memory via cacheable mapping; therefore, load
instructions can fetch data from cache lines rather than always read
data from DRAM, the driver can boost memory performance. After using
the cacheable mapping, the driver uses dma_sync_single_for_cpu() to
invalidate cacheline prior to read bounce buffer so can avoid read stale
trace data.
By measurement the duration for function tmc_update_etr_buffer() with
ftrace function_graph tracer, it shows the performance significant
improvement for copying 4MiB data from bounce buffer:
# echo tmc_etr_get_data_flat_buf > set_graph_notrace // avoid noise
# echo tmc_update_etr_buffer > set_graph_function
# echo function_graph > current_tracer
before:
# CPU DURATION FUNCTION CALLS
# | | | | | | |
2) | tmc_update_etr_buffer() {
...
2) # 8148.320 us | }
after:
# CPU DURATION FUNCTION CALLS
# | | | | | | |
2) | tmc_update_etr_buffer() {
...
2) # 2525.420 us | }
Bug: 213931796
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20210905032144.966766-1-leo.yan@linaro.org
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
(cherry picked from commit 0abd076217)
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Change-Id: I271f3882e1bdafb8053aecdb0948584a287b499f
Injecting an exception into a guest with non-VHE is risky business.
Instead of writing in the shadow register for the switch code to
restore it, we override the CPU register instead. Which gets
overriden a few instructions later by said restore code.
The result is that although the guest correctly gets the exception,
it will return to the original context in some random state,
depending on what was there the first place... Boo.
Fix the issue by writing to the shadow register. The original code
is absolutely fine on VHE, as the state is already loaded, and writing
to the shadow register in that case would actually be a bug.
Fixes: bb666c472c ("KVM: arm64: Inject AArch64 exceptions from HYP")
Cc: stable@vger.kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20220121184207.423426-1-maz@kernel.org
(cherry picked from commit 278583055a
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git fixes)
Bug: 209777660
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: Ifc1504c4be69e36a0a70033b36ee148c337ac7b5
Contrary to what df652bcf11 ("KVM: arm64: vgic-v3: Work around GICv3
locally generated SErrors") was asserting, there is at least one other
system out there (Cavium ThunderX2) implementing SEIS, and not in
an obviously broken way.
So instead of imposing the M1 workaround on an innocent bystander,
let's limit it to the two known broken Apple implementations.
Fixes: df652bcf11 ("KVM: arm64: vgic-v3: Work around GICv3 locally generated SErrors")
Reported-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220122103912.795026-1-maz@kernel.org
(cherry picked from commit d11a327ed9
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git fixes)
Bug: 209777660
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I4c1b8faab30744f81b012e03b31cdd8254614f87
CMOs issued from EL2 cannot directly use the kernel helpers,
as EL2 doesn't have a mapping of the guest pages. Oops.
Instead, use the mm_ops indirection to use helpers that will
perform a mapping at EL2 and allow the CMO to be effective.
Fixes: 25aa28691b ("KVM: arm64: Move guest CMOs to the fault handlers")
Reviewed-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220114125038.1336965-1-maz@kernel.org
(cherry picked from commit 094d00f8ca
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git fixes)
Bug: 209777660
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: Id020c5adb0ce0d02bc6cd344e7d01859539b9f4f
This reverts commit 9ad5e201c7.
The corresponding patch has been queued in the kvmarm tree as a fix for
5.17, so revert our FROMLIST version in preparation for pulling in the
upstream queue instead.
Bug: 209777660
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I7f65941b2b13125c6c6397590abbc3e18cb54496
The implementor will be used to condition the FIQ support quirk.
The specific CPU types are not used at the moment, but let's add them
for documentation purposes.
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>
(cherry picked from commit 11ecdad722)
Bug: 209777660
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: If84141e50dfb52258c9ecfca9979f2d77e9a5197
If a vcpu exits for a data abort with an invalid syndrome, the
expectations are that userspace has a chance to save the day if
it has requested to see such exits.
However, this is completely futile in the case of a protected VM,
as none of the state is available. In this particular case, inject
a data abort directly into the vcpu, consistent with what userspace
could do.
This also helps with pKVM, which discards all syndrome information when
forwarding data aborts that are not known to be MMIO.
Finally, hide the RETURN_NISV_IO_ABORT_TO_USER cap from userspace on
protected VMs, and document this tweak to the API.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Bug: 209580772
[willdeacon@: Drop KVM_CAP_SET_GUEST_DEBUG2 from context]
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I4090c7c266b27776089cac69efd489264ed003cf
Commit 3f6536412f ("ANDROID: KVM: arm64: refactor vcpu_read_sys_reg
and vcpu_write_sys_reg for hyp use") predicated direct access to the
live vCPU registers on an is_vhe_hyp_code() check, neglecting the fact
that these functions are also used by the VHE *kernel* code.
Restore the old behaviour by changing the check so that only the nVHE
hyp code unconditionally uses the 'ctxt_sys_reg' table.
Reported-by: Marc Zyngier <mzyngier@google.com>
Signed-off-by: Fuad Tabba <tabba@google.com>
Bug: 209580772
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I17d4c12ffdbbd95e8e8d1820ebb6438b138361aa
Typically, TLB invalidation of guest stage-2 mappings using nVHE is
performed by a hypercall originating from the host. For the invalidation
instruction to be effective, therefore, __tlb_switch_to_{guest,host}()
swizzle the active stage-2 context around the TLBI instruction.
With guest-to-host memory sharing and unsharing hypercalls originating
from the guest under pKVM, there is now a need to support both guest
and host VMID invalidations issued from guest context.
Replace the __tlb_switch_to_{guest,host}() functions with a more general
{enter,exit}_vmid_context() implementation which supports being invoked
from guest context and acts as a no-op if the target context matches the
running context.
Bug: 209580772
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I259b1acd11f25143080af2deaab820746090436d
We should only apply the mask ourselves if we're not
using POSIX acls
Bug: 215212818
Test: com.android.cts.externalstorageapp.CommonExternalStorageTest
#testAllPackageDirsWritable, verify files and cache permissions
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Change-Id: If105afe62a60b93cbce1ca5ab5caf11f008aa7db
The upstream change to make f2fs use iomap for direct I/O was backported
to this kernel branch, which broke the out-of-tree support for fscrypt
direct I/O because f2fs_iomap_begin() isn't aware of encryption. Make
the needed change to f2fs_iomap_begin(), matching what I've proposed
upstream at
https://lore.kernel.org/r/20220120071215.123274-5-ebiggers@kernel.org.
Also drop the fscrypt support from fs/direct-io.c, which is no longer
used since both ext4 and f2fs now use iomap for direct I/O.
Bug: 162255927
Bug: 215554521
Fixes: 6d54ce0108 ("Merge remote-tracking branch 'aosp/upstream-f2fs-stable-linux-5.10.y' into android13-5.10")
Change-Id: I6b99b623ad3b8a86099c260787b2086b415a0e12
Signed-off-by: Eric Biggers <ebiggers@google.com>
Changes in 5.10.93
kbuild: Add $(KBUILD_HOSTLDFLAGS) to 'has_libelf' test
devtmpfs regression fix: reconfigure on each mount
orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc()
remoteproc: qcom: pil_info: Don't memcpy_toio more than is provided
vfs: fs_context: fix up param length parsing in legacy_parse_param
perf: Protect perf_guest_cbs with RCU
KVM: x86: Register Processor Trace interrupt hook iff PT enabled in guest
KVM: s390: Clarify SIGP orders versus STOP/RESTART
9p: only copy valid iattrs in 9P2000.L setattr implementation
video: vga16fb: Only probe for EGA and VGA 16 color graphic cards
media: uvcvideo: fix division by zero at stream start
rtlwifi: rtl8192cu: Fix WARNING when calling local_irq_restore() with interrupts enabled
firmware: qemu_fw_cfg: fix sysfs information leak
firmware: qemu_fw_cfg: fix NULL-pointer deref on duplicate entries
firmware: qemu_fw_cfg: fix kobject leak in probe error path
KVM: x86: remove PMU FIXED_CTR3 from msrs_to_save_all
ALSA: hda/realtek: Add speaker fixup for some Yoga 15ITL5 devices
ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Master after reboot from Windows
ALSA: hda: ALC287: Add Lenovo IdeaPad Slim 9i 14ITL5 speaker quirk
ALSA: hda/realtek: Add quirk for Legion Y9000X 2020
ALSA: hda/realtek: Re-order quirk entries for Lenovo
powerpc/pseries: Get entry and uaccess flush required bits from H_GET_CPU_CHARACTERISTICS
mtd: fixup CFI on ixp4xx
Linux 5.10.93
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I068bb827060f65df5c11bdffcd93090f2ab21148
commit 2aac550da3 upstream.
The recent few quirk entries for Lenovo haven't been put in the right
order. Let's arrange the table again.
Fixes: ad7cc2d41b ("ALSA: hda/realtek: Quirks to enable speaker output...")
Fixes: 6dc8697622 ("ALSA: hda/realtek: Add speaker fixup for some Yoga 15ITL5 devices")
Fixes: 8f4c90427a ("ALSA: hda/realtek: Add quirk for Legion Y9000X 2020")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit c193300867 upstream.
This patch addresses an issue where after rebooting from Windows into Linux
there would be no audio output.
It turns out that the Realtek Audio driver on Windows changes some coeffs
which are not being reset/reinitialized when rebooting the machine. As a
result, there is no audio output until these coeffs are being reset to
their initial state. This patch takes care of that by setting known-good
(initial) values to the coeffs.
We initially relied upon alc1220_fixup_clevo_p950() to fix some pins in the
connection list. However, it also sets coef 0x7 which does not need to be
touched. Furthermore, to prevent mixing device-specific quirks I introduced
a new alc1220_fixup_gb_x570() which is heavily based on
alc1220_fixup_clevo_p950() but does not set coeff 0x7 and fixes the coeffs
that are actually needed instead.
This new alc1220_fixup_gb_x570() is believed to also work for other boards,
like the Gigabyte X570 Aorus Extreme and the newer Gigabyte Aorus X570S
Master. However, as there is no way for me to test these I initially only
enable this new behaviour for the mainboard I have which is the Gigabyte
X570(non-S) Aorus Master.
I tested this patch on the 5.15 branch as well as on master and it is
working well for me.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=205275
Signed-off-by: Christian Lachner <gladiac@gmail.com>
Fixes: 0d45e86d22 ("ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Master")
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220103140517.30273-2-gladiac@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 9fb12fe5b9 upstream.
The fixed counter 3 is used for the Topdown metrics, which hasn't been
enabled for KVM guests. Userspace accessing to it will fail as it's not
included in get_fixed_pmc(). This breaks KVM selftests on ICX+ machines,
which have this counter.
To reproduce it on ICX+ machines, ./state_test reports:
==== Test Assertion Failure ====
lib/x86_64/processor.c:1078: r == nmsrs
pid=4564 tid=4564 - Argument list too long
1 0x000000000040b1b9: vcpu_save_state at processor.c:1077
2 0x0000000000402478: main at state_test.c:209 (discriminator 6)
3 0x00007fbe21ed5f92: ?? ??:0
4 0x000000000040264d: _start at ??:?
Unexpected result from KVM_GET_MSRS, r: 17 (failed MSR was 0x30c)
With this patch, it works well.
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Message-Id: <20211217124934.32893-1-wei.w.wang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fixes: e2ada66ec4 ("kvm: x86: Add Intel PMU MSRs to msrs_to_save[]")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 47a1db8e79 upstream.
An initialised kobject must be freed using kobject_put() to avoid
leaking associated resources (e.g. the object name).
Commit fe3c606843 ("firmware: Fix a reference count leak.") "fixed"
the leak in the first error path of the file registration helper but
left the second one unchanged. This "fix" would however result in a NULL
pointer dereference due to the release function also removing the never
added entry from the fw_cfg_entry_cache list. This has now been
addressed.
Fix the remaining kobject leak by restoring the common error path and
adding the missing kobject_put().
Fixes: 75f3e8e47f ("firmware: introduce sysfs driver for QEMU's fw_cfg device")
Cc: stable@vger.kernel.org # 4.6
Cc: Gabriel Somlo <somlo@cmu.edu>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211201132528.30025-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8b144dedb9 upstream.
Syzbot reports the following WARNING:
[200~raw_local_irq_restore() called with IRQs enabled
WARNING: CPU: 1 PID: 1206 at kernel/locking/irqflag-debug.c:10
warn_bogus_irq_restore+0x1d/0x20 kernel/locking/irqflag-debug.c:10
Hardware initialization for the rtl8188cu can run for as long as 350 ms,
and the routine may be called with interrupts disabled. To avoid locking
the machine for this long, the current routine saves the interrupt flags
and enables local interrupts. The problem is that it restores the flags
at the end without disabling local interrupts first.
This patch fixes commit a53268be0c ("rtlwifi: rtl8192cu: Fix too long
disable of IRQs").
Reported-by: syzbot+cce1ee31614c171f5595@syzkaller.appspotmail.com
Cc: stable@vger.kernel.org
Fixes: a53268be0c ("rtlwifi: rtl8192cu: Fix too long disable of IRQs")
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20211215171105.20623-1-Larry.Finger@lwfinger.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8aa637bf6d upstream.
Add the missing bulk-endpoint max-packet sanity check to
uvc_video_start_transfer() to avoid division by zero in
uvc_alloc_urb_buffers() in case a malicious device has broken
descriptors (or when doing descriptor fuzz testing).
Note that USB core will reject URBs submitted for endpoints with zero
wMaxPacketSize but that drivers doing packet-size calculations still
need to handle this (cf. commit 2548288b4f ("USB: Fix: Don't skip
endpoint descriptors with maxpacket=0")).
Fixes: c0efd23292 ("V4L/DVB (8145a): USB Video Class driver")
Cc: stable@vger.kernel.org # 2.6.26
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 0499f419b7 upstream.
The vga16fb framebuffer driver only supports Enhanced Graphics Adapter
(EGA) and Video Graphics Array (VGA) 16 color graphic cards.
But it doesn't check if the adapter is one of those or if a VGA16 mode
is used. This means that the driver will be probed even if a VESA BIOS
Extensions (VBE) or Graphics Output Protocol (GOP) interface is used.
This issue has been present for a long time but it was only exposed by
commit d391c58271 ("drivers/firmware: move x86 Generic System
Framebuffers support") since the platform device registration to match
the {vesa,efi}fb drivers is done later as a consequence of that change.
All non-x86 architectures though treat orig_video_isVGA as a boolean so
only do the supported video mode check for x86 and not for other arches.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215001
Fixes: d391c58271 ("drivers/firmware: move x86 Generic System Framebuffers support")
Reported-by: Kris Karas <bugs-a21@moonlit-rail.com>
Cc: <stable@vger.kernel.org> # 5.15.x
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Kris Karas <bugs-a21@moonlit-rail.com>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220110095625.278836-3-javierm@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 812de04661 upstream.
With KVM_CAP_S390_USER_SIGP, there are only five Signal Processor
orders (CONDITIONAL EMERGENCY SIGNAL, EMERGENCY SIGNAL, EXTERNAL CALL,
SENSE, and SENSE RUNNING STATUS) which are intended for frequent use
and thus are processed in-kernel. The remainder are sent to userspace
with the KVM_CAP_S390_USER_SIGP capability. Of those, three orders
(RESTART, STOP, and STOP AND STORE STATUS) have the potential to
inject work back into the kernel, and thus are asynchronous.
Let's look for those pending IRQs when processing one of the in-kernel
SIGP orders, and return BUSY (CC2) if one is in process. This is in
agreement with the Principles of Operation, which states that only one
order can be "active" on a CPU at a time.
Cc: stable@vger.kernel.org
Suggested-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20211213210550.856213-2-farman@linux.ibm.com
[borntraeger@linux.ibm.com: add stable tag]
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ff083a2d97 upstream.
Protect perf_guest_cbs with RCU to fix multiple possible errors. Luckily,
all paths that read perf_guest_cbs already require RCU protection, e.g. to
protect the callback chains, so only the direct perf_guest_cbs touchpoints
need to be modified.
Bug #1 is a simple lack of WRITE_ONCE/READ_ONCE behavior to ensure
perf_guest_cbs isn't reloaded between a !NULL check and a dereference.
Fixed via the READ_ONCE() in rcu_dereference().
Bug #2 is that on weakly-ordered architectures, updates to the callbacks
themselves are not guaranteed to be visible before the pointer is made
visible to readers. Fixed by the smp_store_release() in
rcu_assign_pointer() when the new pointer is non-NULL.
Bug #3 is that, because the callbacks are global, it's possible for
readers to run in parallel with an unregisters, and thus a module
implementing the callbacks can be unloaded while readers are in flight,
resulting in a use-after-free. Fixed by a synchronize_rcu() call when
unregistering callbacks.
Bug #1 escaped notice because it's extremely unlikely a compiler will
reload perf_guest_cbs in this sequence. perf_guest_cbs does get reloaded
for future derefs, e.g. for ->is_user_mode(), but the ->is_in_guest()
guard all but guarantees the consumer will win the race, e.g. to nullify
perf_guest_cbs, KVM has to completely exit the guest and teardown down
all VMs before KVM start its module unload / unregister sequence. This
also makes it all but impossible to encounter bug #3.
Bug #2 has not been a problem because all architectures that register
callbacks are strongly ordered and/or have a static set of callbacks.
But with help, unloading kvm_intel can trigger bug #1 e.g. wrapping
perf_guest_cbs with READ_ONCE in perf_misc_flags() while spamming
kvm_intel module load/unload leads to:
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP
CPU: 6 PID: 1825 Comm: stress Not tainted 5.14.0-rc2+ #459
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
RIP: 0010:perf_misc_flags+0x1c/0x70
Call Trace:
perf_prepare_sample+0x53/0x6b0
perf_event_output_forward+0x67/0x160
__perf_event_overflow+0x52/0xf0
handle_pmi_common+0x207/0x300
intel_pmu_handle_irq+0xcf/0x410
perf_event_nmi_handler+0x28/0x50
nmi_handle+0xc7/0x260
default_do_nmi+0x6b/0x170
exc_nmi+0x103/0x130
asm_exc_nmi+0x76/0xbf
Fixes: 39447b386c ("perf: Enhance perf to allow for guest statistic collection from host")
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20211111020738.2512932-2-seanjc@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 40a74870b2 upstream.
'buffer_index_array' really looks like a bitmap. So it should be allocated
as such.
When kzalloc is called, a number of bytes is expected, but a number of
longs is passed instead.
In get(), if not enough memory is allocated, un-allocated memory may be
read or written.
So use bitmap_zalloc() to safely allocate the correct memory size and
avoid un-expected behavior.
While at it, change the corresponding kfree() into bitmap_free() to keep
the semantic.
Fixes: ea2c9c9f65 ("orangefs: bufmap rewrite")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit a6097180d8 upstream.
Prior to Linux v5.4 devtmpfs used mount_single() which treats the given
mount options as "remount" options, so it updates the configuration of
the single super_block on each mount.
Since that was changed, the mount options used for devtmpfs are ignored.
This is a regression which affect systemd - which mounts devtmpfs with
"-o mode=755,size=4m,nr_inodes=1m".
This patch restores the "remount" effect by calling reconfigure_single()
Fixes: d401727ea0 ("devtmpfs: don't mix {ramfs,shmem}_fill_super() with mount_single()")
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit f634ca650f upstream.
Normally, invocations of $(HOSTCC) include $(KBUILD_HOSTLDFLAGS), which
in turn includes $(HOSTLDFLAGS), which allows users to pass in their own
flags when linking. However, the 'has_libelf' test does not, meaning
that if a user requests a specific linker via HOSTLDFLAGS=-fuse-ld=...,
it is not respected and the build might error.
For example, if a user building with clang wants to use all of the LLVM
tools without any GNU tools, they might remove all of the GNU tools from
their system or PATH then build with
$ make HOSTLDFLAGS=-fuse-ld=lld LLVM=1 LLVM_IAS=1
which says use all of the LLVM tools, the integrated assembler, and
ld.lld for linking host executables. Without this change, the build will
error because $(HOSTCC) uses its default linker, rather than the one
requested via -fuse-ld=..., which is GNU ld in clang's case in a default
configuration.
error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please
install libelf-dev, libelf-devel or elfutils-libelf-devel
make[1]: *** [Makefile:1260: prepare-objtool] Error 1
Add $(KBUILD_HOSTLDFLAGS) to the 'has_libelf' test so that the linker
choice is respected.
Link: https://github.com/ClangBuiltLinux/linux/issues/479
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Cc: Paul Barker <paul.barker@sancloud.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* aosp/upstream-f2fs-stable-linux-5.10.y:
f2fs: do not allow partial truncation on pinned file
f2fs: remove redunant invalidate compress pages
f2fs: Simplify bool conversion
f2fs: don't drop compressed page cache in .{invalidate,release}page
f2fs: fix to reserve space for IO align feature
f2fs: fix to check available space of CP area correctly in update_ckpt_flags()
f2fs: support fault injection to f2fs_trylock_op()
f2fs: clean up __find_inline_xattr() with __find_xattr()
f2fs: fix to do sanity check on last xattr entry in __f2fs_setxattr()
f2fs: do not bother checkpoint by f2fs_get_node_info
f2fs: avoid down_write on nat_tree_lock during checkpoint
f2fs: compress: fix potential deadlock of compress file
f2fs: avoid EINVAL by SBI_NEED_FSCK when pinning a file
f2fs: add gc_urgent_high_remaining sysfs node
f2fs: fix to do sanity check in is_alive()
f2fs: fix to avoid panic in is_alive() if metadata is inconsistent
f2fs: fix to do sanity check on inode type during garbage collection
f2fs: avoid duplicate call of mark_inode_dirty
5.10 only
f2fs: support POSIX_FADV_DONTNEED drop compressed page cache
f2fs: fix remove page failed in invalidate compress pages
f2fs: show more DIO information in tracepoint
f2fs: use iomap for direct I/O
f2fs: implement iomap operations
f2fs: fix the f2fs_file_write_iter tracepoint
f2fs: do not expose unwritten blocks to user by DIO
f2fs: reduce indentation in f2fs_file_write_iter()
f2fs: rework write preallocations
f2fs: compress: reduce one page array alloc and free when write compressed page
f2fs: show number of pending discard commands
erofs: fix deadlock when shrink erofs slab
Bug: 207156594
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
Change-Id: I492152e10166357e35bcbfec05847841f7ae6732
Changes in 5.10.92
md: revert io stats accounting
workqueue: Fix unbind_workers() VS wq_worker_running() race
bpf: Fix out of bounds access from invalid *_or_null type verification
Bluetooth: btusb: fix memory leak in btusb_mtk_submit_wmt_recv_urb()
Bluetooth: btusb: Add two more Bluetooth parts for WCN6855
Bluetooth: btusb: Add support for Foxconn MT7922A
Bluetooth: btusb: Add support for Foxconn QCA 0xe0d0
Bluetooth: bfusb: fix division by zero in send path
ARM: dts: exynos: Fix BCM4330 Bluetooth reset polarity in I9100
USB: core: Fix bug in resuming hub's handling of wakeup requests
USB: Fix "slab-out-of-bounds Write" bug in usb_hcd_poll_rh_status
ath11k: Fix buffer overflow when scanning with extraie
mmc: sdhci-pci: Add PCI ID for Intel ADL
veth: Do not record rx queue hint in veth_xmit
mfd: intel-lpss: Fix too early PM enablement in the ACPI ->probe()
can: gs_usb: fix use of uninitialized variable, detach device on reception of invalid USB data
can: isotp: convert struct tpcon::{idx,len} to unsigned int
can: gs_usb: gs_can_start_xmit(): zero-initialize hf->{flags,reserved}
random: fix data race on crng_node_pool
random: fix data race on crng init time
random: fix crash on multiple early calls to add_bootloader_randomness()
media: Revert "media: uvcvideo: Set unique vdev name based in type"
staging: wlan-ng: Avoid bitwise vs logical OR warning in hfa384x_usb_throttlefn()
drm/i915: Avoid bitwise vs logical OR warning in snb_wm_latency_quirk()
staging: greybus: fix stack size warning with UBSAN
Linux 5.10.92
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I782b6626fb65cd34aa7c78e823b38155bbd268f4
In a move operation, if the FROM file has a backing inode associated and
is handled in backing, it might happen that the TO file does not have a
backing path associated (yet), maybe because the FUSE daemon didn't have
the chance to traverse it.
Thus this special case would mistakenly trigger EBADF, while EXDEV is
more appropriate.
Bug: 202785178
Test: mv /storage/emulated/0/Android/data/<pkg>/file /sdcard/DCIM
Signed-off-by: Alessio Balsini <balsini@google.com>
Change-Id: I513c0e17c128ed9181a6b96fbf9f0b950e78be77
If the pinned file has a hole by partial truncation, application that has
the block map will be broken.
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Android uses vma names of up to 256 characters. Change the max limit
for anonymous vma names to support Android legacy use cases.
Bug: 120441514
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: Ia0126ab3919281ce4d5c597a43a47de80eadf71a
