The vmlinux.h generated from BTF is invalid when building
drivers/phy/ti/phy-gmii-sel.c with clang:
vmlinux.h:61702:27: error: array type has incomplete element type ‘struct reg_field’
61702 | const struct reg_field (*regfields)[3];
| ^~~~~~~~~
bpftool generates a forward declaration for this struct regfield, which
compilers aren't happy about. Here's a simplified reproducer:
struct inner {
int val;
};
struct outer {
struct inner (*ptr_to_array)[2];
} A;
After build with clang -> bpftool btf dump c -> clang/gcc:
./def-clang.h:11:23: error: array has incomplete element type 'struct inner'
struct inner (*ptr_to_array)[2];
Member ptr_to_array of struct outer is a pointer to an array of struct
inner. In the DWARF generated by clang, struct outer appears before
struct inner, so when converting BTF of struct outer into C, bpftool
issues a forward declaration to struct inner. With GCC the DWARF info is
reversed so struct inner gets fully defined.
That forward declaration is not sufficient when compilers handle an
array of the struct, even when it's only used through a pointer. Note
that we can trigger the same issue with an intermediate typedef:
struct inner {
int val;
};
typedef struct inner inner2_t[2];
struct outer {
inner2_t *ptr_to_array;
} A;
Becomes:
struct inner;
typedef struct inner inner2_t[2];
And causes:
./def-clang.h:10:30: error: array has incomplete element type 'struct inner'
typedef struct inner inner2_t[2];
To fix this, clear through_ptr whenever we encounter an intermediate
array, to make the inner struct part of a strong link and force full
declaration.
Fixes: 351131b51c ("libbpf: add btf_dump API for BTF-to-C conversion")
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210319112554.794552-2-jean-philippe@linaro.org
* new selftests
* fixes for migration with HyperV re-enlightenment enabled
* fix RCU/SRCU usage
* fixes for local_irq_restore misuse false positive
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Fixes for kvm on x86:
- new selftests
- fixes for migration with HyperV re-enlightenment enabled
- fix RCU/SRCU usage
- fixes for local_irq_restore misuse false positive"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
documentation/kvm: additional explanations on KVM_SET_BOOT_CPU_ID
x86/kvm: Fix broken irq restoration in kvm_wait
KVM: X86: Fix missing local pCPU when executing wbinvd on all dirty pCPUs
KVM: x86: Protect userspace MSR filter with SRCU, and set atomically-ish
selftests: kvm: add set_boot_cpu_id test
selftests: kvm: add _vm_ioctl
selftests: kvm: add get_msr_index_features
selftests: kvm: Add basic Hyper-V clocksources tests
KVM: x86: hyper-v: Don't touch TSC page values when guest opted for re-enlightenment
KVM: x86: hyper-v: Track Hyper-V TSC page status
KVM: x86: hyper-v: Prevent using not-yet-updated TSC page by secondary CPUs
KVM: x86: hyper-v: Limit guest to writing zero to HV_X64_MSR_TSC_EMULATION_STATUS
KVM: x86/mmu: Store the address space ID in the TDP iterator
KVM: x86/mmu: Factor out tdp_iter_return_to_root
KVM: x86/mmu: Fix RCU usage when atomically zapping SPTEs
KVM: x86/mmu: Fix RCU usage in handle_removed_tdp_mmu_page
- fix the return value in error path in gpiolib_dev_init()
- fix the "gpio-line-names" property handling correctly this time
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Merge tag 'gpio-fixes-for-v5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
"Two fixes for the GPIO subsystem. Both address issues in the core GPIO
code:
- fix the return value in error path in gpiolib_dev_init()
- fix the 'gpio-line-names' property handling correctly this time"
* tag 'gpio-fixes-for-v5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpiolib: Assign fwnode to parent's if no primary one provided
gpiolib: Fix error return code in gpiolib_dev_init()
The ECN bit defines ECT(1) = 1, ECT(0) = 2. So inner 0x02 + outer 0x01
should be inner ECT(0) + outer ECT(1). Based on the description of
__INET_ECN_decapsulate, the final decapsulate value should be
ECT(1). So fix the test expect value to 0x01.
Before the fix:
TEST: VXLAN: ECN decap: 01/02->0x02 [FAIL]
Expected to capture 10 packets, got 0.
After the fix:
TEST: VXLAN: ECN decap: 01/02->0x01 [ OK ]
Fixes: a0b61f3d8e ("selftests: forwarding: vxlan_bridge_1d: Add an ECN decap test")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The mailing list for MPTCP maintenance has moved to the
kernel.org-supported mptcp@lists.linux.dev address.
Complete, combined archives for both lists are now hosted at
https://lore.kernel.org/mptcp
Cc: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2021-03-19
This series contains updates to e1000e and igb drivers.
Tom Seewald fixes duplicate guard issues by including the driver name in
the guard for e1000e and igb.
Jesse adds checks that timestamping is on and valid to avoid possible
issues with a misinterpreted time stamp for igb.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
For AF_VSOCK, accept() currently returns sockets that are unlabelled.
Other socket families derive the child's SID from the SID of the parent
and the SID of the incoming packet. This is typically done as the
connected socket is placed in the queue that accept() removes from.
Reuse the existing 'security_sk_clone' hook to copy the SID from the
parent (server) socket to the child. There is no packet SID in this
case.
Fixes: d021c34405 ("VSOCK: Introduce VM Sockets")
Signed-off-by: David Brazdil <dbrazdil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
MTU cannot be changed on dwmac-sun8i. (ip link set eth0 mtu xxx returning EINVAL)
This is due to tx_fifo_size being 0, since this value is used to compute valid
MTU range.
Like dwmac-sunxi (with commit 806fd188ce ("net: stmmac: dwmac-sunxi: Provide TX and RX fifo sizes"))
dwmac-sun8i need to have tx and rx fifo sizes set.
I have used values from datasheets.
After this patch, setting a non-default MTU (like 1000) value works and network is still useable.
Tested-on: sun8i-h3-orangepi-pc
Tested-on: sun8i-r40-bananapi-m2-ultra
Tested-on: sun50i-a64-bananapi-m64
Tested-on: sun50i-h5-nanopi-neo-plus2
Tested-on: sun50i-h6-pine-h64
Fixes: 9f93ac8d40 ("net-next: stmmac: Add dwmac-sun8i")
Reported-by: Belisko Marek <marek.belisko@gmail.com>
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There's no mmu notifier or anything like that, releasing this pin is
entirely up to userspace. Hence FOLL_LONGTERM.
No cc: stable for this patch since a lot of the infrastructure around
FOLL_LONGETRM (like not allowing it for pages currently sitting in
ZONE_MOVEABLE before they're migrated) is still being worked on. So
not big benefits yet.
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Russell King <linux+etnaviv@armlinux.org.uk>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: etnaviv@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20210301095254.1946084-2-daniel.vetter@ffwll.ch
Nothing checks userptr.ro except this call to pup_fast, which means
there's nothing actually preventing userspace from writing to this.
Which means you can just read-only mmap any file you want, userptr it
and then write to it with the gpu. Not good.
The right way to handle this is FOLL_WRITE | FOLL_FORCE, which will
break any COW mappings and update tracking for MAY_WRITE mappings so
there's no exploit and the vm isn't confused about what's going on.
For any legit use case there's no difference from what userspace can
observe and do.
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Cc: stable@vger.kernel.org
Cc: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Russell King <linux+etnaviv@armlinux.org.uk>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: etnaviv@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20210301095254.1946084-1-daniel.vetter@ffwll.ch
If the USB host controller is EHCI, the throughput is reduced from
300Mb/s to 60Mb/s, when the rx buffer size is modified from 16K to
32K.
According to the EHCI spec, the maximum size of the qTD is 20K.
Therefore, when the driver uses more than 20K buffer, the latency
time of EHCI would be increased. And, it let the RTL8153A get worse
throughput.
However, the driver uses alloc_pages() for rx buffer, so I limit
the rx buffer to 16K rather than 20K.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=205923
Fixes: ec5791c202 ("r8152: separate the rx buffer size")
Reported-by: Robert Davies <robdavies1977@gmail.com>
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- disable preemption when accessing local per-cpu variables in the new
counter set driver
- fix by a factor of four increased steal time due to missing
cputime_to_nsecs() conversion
- fix PCI device structure leak
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Merge tag 's390-5.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Heiko Carstens:
- disable preemption when accessing local per-cpu variables in the new
counter set driver
- fix by a factor of four increased steal time due to missing
cputime_to_nsecs() conversion
- fix PCI device structure leak
* tag 's390-5.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/pci: fix leak of PCI device structure
s390/vtime: fix increased steal time accounting
s390/cpumf: disable preemption when accessing per-cpu variable
The sk's sk_route_caps is set in sctp_packet_config, and later it
only needs to change when traversing the transport_list in a loop,
as the dst might be changed in the tx path.
So move sk_route_caps check and set into sctp_outq_flush_transports
from sctp_packet_transmit. This also fixes a dst leak reported by
Chen Yi:
https://bugzilla.kernel.org/show_bug.cgi?id=212227
As calling sk_setup_caps() in sctp_packet_transmit may also set the
sk_route_caps for the ctrl sock in a netns. When the netns is being
deleted, the ctrl sock's releasing is later than dst dev's deleting,
which will cause this dev's deleting to hang and dmesg error occurs:
unregister_netdevice: waiting for xxx to become free. Usage count = 1
Reported-by: Chen Yi <yiche@redhat.com>
Fixes: bcd623d8e9 ("sctp: call sk_setup_caps in sctp_packet_transmit instead")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
After adding a verifier to test all strings printed in trace events
to make sure they either point to a string on the ring buffer,
or to read only core kernel memory, it triggered on a workqueue
trace event. The trace event workqueue_queue_work references
the allocated name of the workqueue in the output. If the workqueue
is freed before the trace is read, then the trace will dereference
freed memory. Update the trace event to use the __string(), __assign_str(),
and __get_str() helpers to handle such cases.
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Merge tag 'trace-v5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull workqueue tracing fix from Steven Rostedt:
"Fix workqueue trace event unsafe string reference
After adding a verifier to test all strings printed in trace events to
make sure they either point to a string on the ring buffer, or to read
only core kernel memory, it triggered on a workqueue trace event. The
trace event workqueue_queue_work references the allocated name of the
workqueue in the output. If the workqueue is freed before the trace is
read, then the trace will dereference freed memory.
Update the trace event to use the __string(), __assign_str(), and
__get_str() helpers to handle such cases"
* tag 'trace-v5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
workqueue/tracing: Copy workqueue name to buffer in trace event
- Revert ACPI PM commit that attempted to improve reboot handling
on some systems, but it caused other systems to panic() during
reboot (Josef Bacik).
- Revert PM-runtime commit that attempted to improve the handling
of suppliers during PM-runtime suspend of a consumer device, but
it introduced a race condition potentially leading to unexpected
behavior (Rafael Wysocki).
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Merge tag 'pm-5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Revert two problematic commits.
Specifics:
- Revert ACPI PM commit that attempted to improve reboot handling on
some systems, but it caused other systems to panic() during reboot
(Josef Bacik)
- Revert PM-runtime commit that attempted to improve the handling of
suppliers during PM-runtime suspend of a consumer device, but it
introduced a race condition potentially leading to unexpected
behavior (Rafael Wysocki)"
* tag 'pm-5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Revert "PM: runtime: Update device status before letting suppliers suspend"
Revert "PM: ACPI: reboot: Use S5 for reboot"
Including:
- Three AMD IOMMU patches to fix a boot crash on AMD Stoney
systems and every other AMD IOMMU system booted with
'amd_iommu=off'. This is a v5.11 regression.
- A Fix for the Tegra IOMMU driver to make sure it detects all
IOMMUs
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Merge tag 'iommu-fixes-v5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- Three AMD IOMMU patches to fix a boot crash on AMD Stoney systems and
every other AMD IOMMU system booted with 'amd_iommu=off'.
This is a v5.11 regression.
- A Fix for the Tegra IOMMU driver to make sure it detects all IOMMUs
* tag 'iommu-fixes-v5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/tegra-smmu: Make tegra_smmu_probe_device() to handle all IOMMU phandles
iommu/amd: Keep track of amd_iommu_irq_remap state
iommu/amd: Don't call early_amd_iommu_init() when AMD IOMMU is disabled
iommu/amd: Move Stoney Ridge check to detect_ivrs()
Majority of changes are various ASoC device/platform-specific small
fixes (including a removal of stale file) while the only common
change is a clk management fix in ASoC simple-card driver.
The rest are usual HD-audio quirks.
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Merge tag 'sound-5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"The majority of changes are various ASoC device/platform-specific
small fixes (including a removal of stale file) while the only common
change is a clk management fix in ASoC simple-card driver.
The rest are the usual HD-audio quirks"
* tag 'sound-5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (44 commits)
ALSA: usb-audio: Fix unintentional sign extension issue
ALSA: hda/realtek: fix mute/micmute LEDs for HP 850 G8
ASoC: dt-bindings: fsl_spdif: Add compatible string for new platforms
ASoC: rt711: add snd_soc_component remove callback
ASoC: rt5659: Update MCLK rate in set_sysclk()
ASoC: simple-card-utils: Do not handle device clock
ALSA: hda/realtek: fix mute/micmute LEDs for HP 440 G8
ALSA: hda/realtek: fix mute/micmute LEDs for HP 840 G8
ALSA: hda/realtek: apply pin quirk for XiaomiNotebook Pro
ALSA: hda/realtek: Apply headset-mic quirks for Xiaomi Redmibook Air
ASoC: mediatek: mt8192: fix tdm out data is valid on rising edge
ALSA: dice: fix null pointer dereference when node is disconnected
ALSA: hda: generic: Fix the micmute led init state
ASoC: qcom: lpass-cpu: Fix lpass dai ids parse
spi: cadence: set cqspi to the driver_data field of struct device
ASoC: SOF: intel: fix wrong poll bits in dsp power down
ASoC: codecs: wcd934x: add a sanity check in set channel map
ASoC: qcom: sdm845: Fix array out of range on rx slim channels
ASoC: qcom: sdm845: Fix array out of bounds access
ASoC: remove remnants of sirf prima/atlas audio codec
...
Applications that create and extend and write to a file do not
expect to see 0 allocation size. When file is extended,
set its allocation size to a plausible value until we have a
chance to query the server for it. When the file is cached
this will prevent showing an impossible number of allocated
blocks (like 0). This fixes e.g. xfstests 614 which does
1) create a file and set its size to 64K
2) mmap write 64K to the file
3) stat -c %b for the file (to query the number of allocated blocks)
It was failing because we returned 0 blocks. Even though we would
return the correct cached file size, we returned an impossible
allocation size.
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: <stable@vger.kernel.org>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
The .callback of the quirk for Sony VPCEH3U1E was unintetionally
removed by the commit 25417185e9 ("ACPI: video: Add DMI quirk
for GIGABYTE GB-BXBT-2807"). Add it back to make sure the quirk
for Sony VPCEH3U1E works as expected.
Fixes: 25417185e9 ("ACPI: video: Add DMI quirk for GIGABYTE GB-BXBT-2807")
Signed-off-by: Chris Chiu <chris.chiu@canonical.com>
Reported-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Pavel Machek (CIP) <pavel@denx.de>
Cc: 5.11+ <stable@vger.kernel.org> # 5.11+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Add a couple of checks to make sure timestamping is on and that the
timestamp value from DMA is valid. This avoids any functional issues
that could come from a misinterpreted time stamp.
One of the functions changed doesn't need a return value added because
there was no value in checking from the calling locations.
While here, fix a couple of reverse christmas tree issues next to
the code being changed.
Fixes: f56e7bba22 ("igb: Pull timestamp from fragment before adding it to skb")
Fixes: 9cbc948b5a ("igb: add XDP support")
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
The include guard "_E1000_HW_H_" is used by two separate header files in
two different drivers (e1000/e1000_hw.h and igb/e1000_hw.h). Using the
same include guard macro in more than one header file may cause
unexpected behavior from the compiler. Fix this by renaming the
duplicate guard in the igb driver.
Fixes: 9d5c824399 ("igb: PCI-Express 82575 Gigabit Ethernet driver")
Signed-off-by: Tom Seewald <tseewald@gmail.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
The include guard "_E1000_HW_H_" is used by header files in three
different drivers (e1000/e1000_hw.h, e1000e/hw.h, and igb/e1000_hw.h).
Using the same include guard macro in more than one header file may
cause unexpected behavior from the compiler. Fix the duplicate include
guard in the e1000e driver by renaming it.
Fixes: bc7f75fa97 ("[E1000E]: New pci-express e1000 driver (currently for ICH9 devices only)")
Signed-off-by: Tom Seewald <tseewald@gmail.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Acked-by: Sasha Neftin <sasha.neftin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Revert commit 44cc89f764 ("PM: runtime: Update device status
before letting suppliers suspend") that introduced a race condition
into __rpm_callback() which allowed a concurrent rpm_resume() to
run and resume the device prematurely after its status had been
changed to RPM_SUSPENDED by __rpm_callback().
Fixes: 44cc89f764 ("PM: runtime: Update device status before letting suppliers suspend")
Link: https://lore.kernel.org/linux-pm/24dfb6fc-5d54-6ee2-9195-26428b7ecf8a@intel.com/
Reported-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: 4.10+ <stable@vger.kernel.org> # 4.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
- anothing missing RT_PROP table related fix, to ensure that the efivarfs
pseudo filesystem fails gracefully if variable services are unsupported
- use the correct alignment for literal EFI GUIDs
- fix a use after unmap issue in the memreserve code
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Merge tag 'efi-urgent-for-v5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/urgent
Pull EFI fixes from Ard Biesheuvel:
"- another missing RT_PROP table related fix, to ensure that the efivarfs
pseudo filesystem fails gracefully if variable services are unsupported
- use the correct alignment for literal EFI GUIDs
- fix a use after unmap issue in the memreserve code"
Signed-off-by: Ingo Molnar <mingo@kernel.org>
- fix tag allocation for keep alive
- fix a unit mismatch for the Write Zeroes limits
- various TCP transport fixes (Sagi Grimberg, Elad Grupi)
- fix iosqes and iocqes validation for discovery controllers (Sagi Grimberg)
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Merge tag 'nvme-5.12-20210319' of git://git.infradead.org/nvme into block-5.12
Pull NVMe updates from Christoph:
"nvme fixes for 5.12
- fix tag allocation for keep alive
- fix a unit mismatch for the Write Zeroes limits
- various TCP transport fixes (Sagi Grimberg, Elad Grupi)
- fix iosqes and iocqes validation for discovery controllers (Sagi Grimberg)"
* tag 'nvme-5.12-20210319' of git://git.infradead.org/nvme:
nvmet-tcp: fix kmap leak when data digest in use
nvmet: don't check iosqes,iocqes for discovery controllers
nvme-rdma: fix possible hang when failing to set io queues
nvme-tcp: fix possible hang when failing to set io queues
nvme-tcp: fix misuse of __smp_processor_id with preemption enabled
nvme-tcp: fix a NULL deref when receiving a 0-length r2t PDU
nvme: fix Write Zeroes limitations
nvme: allocate the keep alive request using BLK_MQ_REQ_NOWAIT
nvme: merge nvme_keep_alive into nvme_keep_alive_work
nvme-fabrics: only reserve a single tag
Sites that match init_section_contains() get marked as INIT. For
built-in code init_sections contains both __init and __exit text. OTOH
kernel_text_address() only explicitly includes __init text (and there
are no __exit text markers).
Match what jump_label already does and ignore the warning for INIT
sites. Also see the excellent changelog for commit: 8f35eaa5f2
("jump_label: Don't warn on __exit jump entries")
Fixes: 9183c3f9ed ("static_call: Add inline static call infrastructure")
Reported-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Sumit Garg <sumit.garg@linaro.org>
Link: https://lkml.kernel.org/r/20210318113610.739542434@infradead.org
The intent is to avoid writing init code after init (because the text
might have been freed). The code is needlessly different between
jump_label and static_call and not obviously correct.
The existing code relies on the fact that the module loader clears the
init layout, such that within_module_init() always fails, while
jump_label relies on the module state which is more obvious and
matches the kernel logic.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Sumit Garg <sumit.garg@linaro.org>
Link: https://lkml.kernel.org/r/20210318113610.636651340@infradead.org
It turns out that static_call_set_init() does not preserve the other
flags; IOW. it clears TAIL if it was set.
Fixes: 9183c3f9ed ("static_call: Add inline static call infrastructure")
Reported-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Sumit Garg <sumit.garg@linaro.org>
Link: https://lkml.kernel.org/r/20210318113610.519406371@infradead.org
Vitaly ran into an issue with hotplugging CPU0 on an Amazon instance where
the matrix allocator claimed to be out of vectors. He analyzed it down to
the point that IRQ2, the PIC cascade interrupt, which is supposed to be not
ever routed to the IO/APIC ended up having an interrupt vector assigned
which got moved during unplug of CPU0.
The underlying issue is that IRQ2 for various reasons (see commit
af174783b9 ("x86: I/O APIC: Never configure IRQ2" for details) is treated
as a reserved system vector by the vector core code and is not accounted as
a regular vector. The Amazon BIOS has an routing entry of pin2 to IRQ2
which causes the IO/APIC setup to claim that interrupt which is granted by
the vector domain because there is no sanity check. As a consequence the
allocation counter of CPU0 underflows which causes a subsequent unplug to
fail with:
[ ... ] CPU 0 has 4294967295 vectors, 589 available. Cannot disable CPU
There is another sanity check missing in the matrix allocator, but the
underlying root cause is that the IO/APIC code lost the IRQ2 ignore logic
during the conversion to irqdomains.
For almost 6 years nobody complained about this wreckage, which might
indicate that this requirement could be lifted, but for any system which
actually has a PIC IRQ2 is unusable by design so any routing entry has no
effect and the interrupt cannot be connected to a device anyway.
Due to that and due to history biased paranoia reasons restore the IRQ2
ignore logic and treat it as non existent despite a routing entry claiming
otherwise.
Fixes: d32932d02e ("x86/irq: Convert IOAPIC to use hierarchical irqdomain interfaces")
Reported-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210318192819.636943062@linutronix.de
The ioctl KVM_SET_BOOT_CPU_ID fails when called after vcpu creation.
Add this explanation in the documentation.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20210319091650.11967-1-eesposit@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Commit 494c704f9a ("efi: Use 32-bit alignment for efi_guid_t") updated
the type definition of efi_guid_t to ensure that it always appears
sufficiently aligned (the UEFI spec is ambiguous about this, but given
the fact that its EFI_GUID type is defined in terms of a struct carrying
a uint32_t, the natural alignment is definitely >= 32 bits).
However, we missed the EFI_GUID() macro which is used to instantiate
efi_guid_t literals: that macro is still based on the guid_t type,
which does not have a minimum alignment at all. This results in warnings
such as
In file included from drivers/firmware/efi/mokvar-table.c:35:
include/linux/efi.h:1093:34: warning: passing 1-byte aligned argument to
4-byte aligned parameter 2 of 'get_var' may result in an unaligned pointer
access [-Walign-mismatch]
status = get_var(L"SecureBoot", &EFI_GLOBAL_VARIABLE_GUID, NULL, &size,
^
include/linux/efi.h:1101:24: warning: passing 1-byte aligned argument to
4-byte aligned parameter 2 of 'get_var' may result in an unaligned pointer
access [-Walign-mismatch]
get_var(L"SetupMode", &EFI_GLOBAL_VARIABLE_GUID, NULL, &size, &setupmode);
The distinction only matters on CPUs that do not support misaligned loads
fully, but 32-bit ARM's load-multiple instructions fall into that category,
and these are likely to be emitted by the compiler that built the firmware
for loading word-aligned 128-bit GUIDs from memory
So re-implement the initializer in terms of our own efi_guid_t type, so that
the alignment becomes a property of the literal's type.
Fixes: 494c704f9a ("efi: Use 32-bit alignment for efi_guid_t")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Link: https://github.com/ClangBuiltLinux/linux/issues/1327
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
In the for loop in efi_mem_reserve_persistent(), prsv = rsv->next
use the unmapped rsv. Use the unmapped pages will cause segment
fault.
Fixes: 18df7577ad ("efi/memreserve: deal with memreserve entries in unmapped memory")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
If CONFIG_CIFS_ROOT is not set, rootfs mount option is invalid
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
CC: <stable@vger.kernel.org> # v5.11
Signed-off-by: Steve French <stfrench@microsoft.com>
A typo is found out by codespell tool in 251th lines of cifs_swn.c:
$ codespell ./fs/cifs/
./cifs_swn.c:251: funciton ==> function
Fix a typo found by codespell.
Signed-off-by: Liu xuzhi <liu.xuzhi@zte.com.cn>
Signed-off-by: Steve French <stfrench@microsoft.com>
Let's drop the pr_err()s from sel_make_policy_nodes() and just add one
pr_warn_ratelimited() call to the sel_make_policy_nodes() error path in
sel_write_load().
Changing from error to warning makes sense, since after 02a52c5c8c
("selinux: move policy commit after updating selinuxfs"), this error
path no longer leads to a broken selinuxfs tree (it's just kept in the
original state and policy load is aborted).
I also added _ratelimited to be consistent with the other prtin in the
same function (it's probably not necessary, but can't really hurt...
there are likely more important error messages to be printed when
filesystem entry creation starts erroring out).
Suggested-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Commit 02a52c5c8c ("selinux: move policy commit after updating
selinuxfs") moved the selinux_policy_commit() call out of
security_load_policy() into sel_write_load(), which caused a subtle yet
rather serious bug.
The problem is that security_load_policy() passes a reference to the
convert_params local variable to sidtab_convert(), which stores it in
the sidtab, where it may be accessed until the policy is swapped over
and RCU synchronized. Before 02a52c5c8c, selinux_policy_commit() was
called directly from security_load_policy(), so the convert_params
pointer remained valid all the way until the old sidtab was destroyed,
but now that's no longer the case and calls to sidtab_context_to_sid()
on the old sidtab after security_load_policy() returns may cause invalid
memory accesses.
This can be easily triggered using the stress test from commit
ee1a84fdfe ("selinux: overhaul sidtab to fix bug and improve
performance"):
```
function rand_cat() {
echo $(( $RANDOM % 1024 ))
}
function do_work() {
while true; do
echo -n "system_u:system_r:kernel_t:s0:c$(rand_cat),c$(rand_cat)" \
>/sys/fs/selinux/context 2>/dev/null || true
done
}
do_work >/dev/null &
do_work >/dev/null &
do_work >/dev/null &
while load_policy; do echo -n .; sleep 0.1; done
kill %1
kill %2
kill %3
```
Fix this by allocating the temporary sidtab convert structures
dynamically and passing them among the
selinux_policy_{load,cancel,commit} functions.
Fixes: 02a52c5c8c ("selinux: move policy commit after updating selinuxfs")
Cc: stable@vger.kernel.org
Tested-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Reviewed-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
[PM: merge fuzz in security.h and services.c]
Signed-off-by: Paul Moore <paul@paul-moore.com>
If sel_make_policy_nodes() fails, we should jump to 'out', not 'out1',
as the latter would incorrectly log an MAC_POLICY_LOAD audit record,
even though the policy hasn't actually been reloaded. The 'out1' jump
label now becomes unused and can be removed.
Fixes: 02a52c5c8c ("selinux: move policy commit after updating selinuxfs")
Cc: stable@vger.kernel.org
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Set the disconnected flag before releasing the data interface in case
netdev registration fails to avoid having the disconnect callback try to
deregister the never registered netdev (and trigger a WARN_ON()).
Fixes: 87cf65601e ("USB host CDC Phonet network interface driver")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
1) Several patches to testore use of memory barriers instead of RCU to
ensure consistent access to ruleset, from Mark Tomlinson.
2) Fix dump of expectation via ctnetlink, from Florian Westphal.
3) GRE helper works for IPv6, from Ludovic Senecaux.
4) Set error on unsupported flowtable flags.
5) Use delayed instead of deferrable workqueue in the flowtable,
from Yinjun Zhang.
6) Fix spurious EEXIST in case of add-after-delete flowtable in
the same batch.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
ttm:
- Make ttm_bo_unpin() not wraparound on too many unpins.
omap:
- Fix coccicheck warning in omap.
amdgpu:
- DCN 3.0 gamma fixes
- DCN 2.1 corrupt screen fix
i915:
- Workaround async flip + VT-d frame corruption on HSW/BDW
- Fix NMI watchdog crash due to uninitialized OA buffer use on gen12+
nouveau:
- workaround oops with bo syncing
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Merge tag 'drm-fixes-2021-03-19' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Regular fixes pull, pretty small set of fixes, a couple of i915 and
amdgpu, one ttm, one nouveau and one omap. Probably smaller than usual
for this time, so we'll see if something pops up next week or if this
will continue to stay small.
Summary:
ttm:
- Make ttm_bo_unpin() not wraparound on too many unpins
omap:
- Fix coccicheck warning in omap
amdgpu:
- DCN 3.0 gamma fixes
- DCN 2.1 corrupt screen fix
i915:
- Workaround async flip + VT-d frame corruption on HSW/BDW
- Fix NMI watchdog crash due to uninitialized OA buffer use on gen12+
nouveau:
- workaround oops with bo syncing"
* tag 'drm-fixes-2021-03-19' of git://anongit.freedesktop.org/drm/drm:
nouveau: Skip unvailable ttm page entries
drm/amd/display: Remove MPC gamut remap logic for DCN30
drm/amd/display: Correct algorithm for reversed gamma
drm/omap: dsi: fix unsigned expression compared with zero
i915/perf: Start hrtimer only if sampling the OA buffer
drm/i915: Workaround async flip + VT-d corruption on HSW/BDW
drm/amd/display: Copy over soc values before bounding box creation
drm/ttm: make ttm_bo_unpin more defensive
Starting with commit f295c8cfec
("drm/nouveau: fix dma syncing warning with debugging on.")
the following oops occures:
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 PTI
CPU: 6 PID: 1013 Comm: Xorg.bin Tainted: G E 5.11.0-desktop-rc0+ #2
Hardware name: Acer Aspire VN7-593G/Pluto_KLS, BIOS V1.11 08/01/2018
RIP: 0010:nouveau_bo_sync_for_device+0x40/0xb0 [nouveau]
Call Trace:
nouveau_bo_validate+0x5d/0x80 [nouveau]
nouveau_gem_ioctl_pushbuf+0x662/0x1120 [nouveau]
? nouveau_gem_ioctl_new+0xf0/0xf0 [nouveau]
drm_ioctl_kernel+0xa6/0xf0 [drm]
drm_ioctl+0x1f4/0x3a0 [drm]
? nouveau_gem_ioctl_new+0xf0/0xf0 [nouveau]
nouveau_drm_ioctl+0x50/0xa0 [nouveau]
__x64_sys_ioctl+0x7e/0xb0
do_syscall_64+0x33/0x80
entry_SYSCALL_64_after_hwframe+0x44/0xae
---[ end trace ccfb1e7f4064374f ]---
RIP: 0010:nouveau_bo_sync_for_device+0x40/0xb0 [nouveau]
The underlying problem is not introduced by the commit, yet it uncovered the
underlying issue. The cited commit relies on valid pages. This is not given for
due to some bugs. For now, just warn and work around the issue by just ignoring
the bad ttm objects.
Below is some debug info gathered while debugging this issue:
nouveau 0000:01:00.0: DRM: ttm_dma->num_pages: 2048
nouveau 0000:01:00.0: DRM: ttm_dma->pages is NULL
nouveau 0000:01:00.0: DRM: ttm_dma: 00000000e96058e7
nouveau 0000:01:00.0: DRM: ttm_dma->page_flags:
nouveau 0000:01:00.0: DRM: ttm_dma: Populated: 1
nouveau 0000:01:00.0: DRM: ttm_dma: No Retry: 0
nouveau 0000:01:00.0: DRM: ttm_dma: SG: 256
nouveau 0000:01:00.0: DRM: ttm_dma: Zero Alloc: 0
nouveau 0000:01:00.0: DRM: ttm_dma: Swapped: 0
Signed-off-by: Tobias Klausmann <tobias.klausmann@freenet.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210313222159.3346-1-tobias.klausmann@freenet.de
drm/i915 fixes for v5.12-rc4:
- Workaround async flip + VT-d frame corruption on HSW/BDW
- Fix NMI watchdog crash due to uninitialized OA buffer use on gen12+
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87blbg8y5t.fsf@intel.com
- Make ttm_bo_unpin() not wraparound on too many unpins.
- Fix coccicheck warning in omap.
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Merge tag 'drm-misc-fixes-2021-03-18' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
drm-misc-fixes for v5.12-rc4:
- Make ttm_bo_unpin() not wraparound on too many unpins.
- Fix coccicheck warning in omap.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/a0e13bbb-6ba6-ff24-4db8-0e02e605de18@linux.intel.com
- Fix an Ethernet issue on imx6ul-14x14-evk board that is caused by
independent PHY reset.
- Add missing `dma-coherent` property for LayerScape device trees to fix a
kernel BUG report.
- Use IRQCHIP_DECLARE for AVIC driver to fix a boot issue on i.MX25 with
fw_devlink=on.
- Add missing I2C pinctrl entry for imx8mp-phyboard-pollux-rdk board to
fix the broken I2C GPIO recovery support.
- Add `fsl,use-minimum-ecc` property for imx6ull-myir-mys-6ulx-eval
device tree to fix UBI filesystem mount failure.
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Merge tag 'imx-fixes-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/fixes
i.MX fixes for 5.12:
- Fix an Ethernet issue on imx6ul-14x14-evk board that is caused by
independent PHY reset.
- Add missing `dma-coherent` property for LayerScape device trees to fix a
kernel BUG report.
- Use IRQCHIP_DECLARE for AVIC driver to fix a boot issue on i.MX25 with
fw_devlink=on.
- Add missing I2C pinctrl entry for imx8mp-phyboard-pollux-rdk board to
fix the broken I2C GPIO recovery support.
- Add `fsl,use-minimum-ecc` property for imx6ull-myir-mys-6ulx-eval
device tree to fix UBI filesystem mount failure.
* tag 'imx-fixes-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: imx6ull: fix ubi filesystem mount failed
ARM: imx6ul-14x14-evk: Do not reset the Ethernet PHYs independently
arm64: dts: imx8mp-phyboard-pollux-rdk: Add missing pinctrl entry
arm64: dts: ls1012a: mark crypto engine dma coherent
arm64: dts: ls1043a: mark crypto engine dma coherent
arm64: dts: ls1046a: mark crypto engine dma coherent
ARM: imx: avic: Convert to using IRQCHIP_DECLARE
Link: https://lore.kernel.org/r/20210318090145.GA22955@dragon
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- only DT changes
-- wrong phy address that blocks Ethernet use on boards with sama5d27 SoM1
-- restrictive PIN possibilities for sam9x60
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Merge tag 'at91-fixes-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into arm/fixes
AT91 fixes for 5.12:
- only DT changes
-- wrong phy address that blocks Ethernet use on boards with sama5d27 SoM1
-- restrictive PIN possibilities for sam9x60
* tag 'at91-fixes-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
ARM: dts: at91: sam9x60: fix mux-mask to match product's datasheet
ARM: dts: at91: sam9x60: fix mux-mask for PA7 so it can be set to A, B and C
ARM: dts: at91-sama5d27_som1: fix phy address to 7
Link: https://lore.kernel.org/r/20210310160547.55382-1-nicolas.ferre@microchip.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Regression fixes for multiple issues found mostly caused by recent changes
to drop legacy platform data and and starting to use the new prm driver
reset controller:
- Fix ocp interconnect bus access error reporting for omap_l3_noc by
setting IRQF_NO_THREAD
- Fix changed mmc slot order regression by adding mmc aliases for am335x
- Fix dra7 reboot regression caused by invalid pcie reset map
- Fix smartreflex init regression caused by dropped legacy data
- Fix ti-sysc driver warning on unbind if reset is not deasserted
- Fix flakey reset deassert for dra7 iva
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Merge tag 'omap-for-v5.12/fixes-rc1-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes
Fixes for omaps for v5.12-rc cycle
Regression fixes for multiple issues found mostly caused by recent changes
to drop legacy platform data and and starting to use the new prm driver
reset controller:
- Fix ocp interconnect bus access error reporting for omap_l3_noc by
setting IRQF_NO_THREAD
- Fix changed mmc slot order regression by adding mmc aliases for am335x
- Fix dra7 reboot regression caused by invalid pcie reset map
- Fix smartreflex init regression caused by dropped legacy data
- Fix ti-sysc driver warning on unbind if reset is not deasserted
- Fix flakey reset deassert for dra7 iva
* tag 'omap-for-v5.12/fixes-rc1-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
soc: ti: omap-prm: Fix occasional abort on reset deassert for dra7 iva
bus: ti-sysc: Fix warning on unbind if reset is not deasserted
ARM: OMAP2+: Fix smartreflex init regression after dropping legacy data
soc: ti: omap-prm: Fix reboot issue with invalid pcie reset map for dra7
ARM: dts: am33xx: add aliases for mmc interfaces
bus: omap_l3_noc: mark l3 irqs as IRQF_NO_THREAD
Link: https://lore.kernel.org/r/pull-1614868603-800959@atomide.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
5.12:
- Lukas fixes an incorrect entry of the Broadcom PMB driver which still
referenced the location of the files from a previous submission
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Merge tag 'arm-soc/for-5.12/drivers-part2' of https://github.com/Broadcom/stblinux into arm/fixes
This pull request contains Broadcom ARM/ARM64 SoC drivers changes for
5.12:
- Lukas fixes an incorrect entry of the Broadcom PMB driver which still
referenced the location of the files from a previous submission
* tag 'arm-soc/for-5.12/drivers-part2' of https://github.com/Broadcom/stblinux:
MAINTAINERS: rectify BROADCOM PMB (POWER MANAGEMENT BUS) DRIVER
Link: https://lore.kernel.org/r/20210217011654.2561426-2-f.fainelli@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
