forked from Minki/linux
f3438b4c4e
1030412 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
f3438b4c4e |
3 cifs/smb3 fixes, including two for stable, and a fix for an fallocate problem noticed by Clang
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Linus Torvalds
|
c7d1022326 |
Networking fixes for 5.14-rc4, including fixes from bpf, can, WiFi (mac80211)
and netfilter trees.
Current release - regressions:
- mac80211: fix starting aggregation sessions on mesh interfaces
Current release - new code bugs:
- sctp: send pmtu probe only if packet loss in Search Complete state
- bnxt_en: add missing periodic PHC overflow check
- devlink: fix phys_port_name of virtual port and merge error
- hns3: change the method of obtaining default ptp cycle
- can: mcba_usb_start(): add missing urb->transfer_dma initialization
Previous releases - regressions:
- set true network header for ECN decapsulation
- mlx5e: RX, avoid possible data corruption w/ relaxed ordering and LRO
- phy: re-add check for PHY_BRCM_DIS_TXCRXC_NOENRGY on the BCM54811 PHY
- sctp: fix return value check in __sctp_rcv_asconf_lookup
Previous releases - always broken:
- bpf:
- more spectre corner case fixes, introduce a BPF nospec
instruction for mitigating Spectre v4
- fix OOB read when printing XDP link fdinfo
- sockmap: fix cleanup related races
- mac80211: fix enabling 4-address mode on a sta vif after assoc
- can:
- raw: raw_setsockopt(): fix raw_rcv panic for sock UAF
- j1939: j1939_session_deactivate(): clarify lifetime of
session object, avoid UAF
- fix number of identical memory leaks in USB drivers
- tipc:
- do not blindly write skb_shinfo frags when doing decryption
- fix sleeping in tipc accept routine
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes for 5.14-rc4, including fixes from bpf, can, WiFi
(mac80211) and netfilter trees.
Current release - regressions:
- mac80211: fix starting aggregation sessions on mesh interfaces
Current release - new code bugs:
- sctp: send pmtu probe only if packet loss in Search Complete state
- bnxt_en: add missing periodic PHC overflow check
- devlink: fix phys_port_name of virtual port and merge error
- hns3: change the method of obtaining default ptp cycle
- can: mcba_usb_start(): add missing urb->transfer_dma initialization
Previous releases - regressions:
- set true network header for ECN decapsulation
- mlx5e: RX, avoid possible data corruption w/ relaxed ordering and
LRO
- phy: re-add check for PHY_BRCM_DIS_TXCRXC_NOENRGY on the BCM54811
PHY
- sctp: fix return value check in __sctp_rcv_asconf_lookup
Previous releases - always broken:
- bpf:
- more spectre corner case fixes, introduce a BPF nospec
instruction for mitigating Spectre v4
- fix OOB read when printing XDP link fdinfo
- sockmap: fix cleanup related races
- mac80211: fix enabling 4-address mode on a sta vif after assoc
- can:
- raw: raw_setsockopt(): fix raw_rcv panic for sock UAF
- j1939: j1939_session_deactivate(): clarify lifetime of session
object, avoid UAF
- fix number of identical memory leaks in USB drivers
- tipc:
- do not blindly write skb_shinfo frags when doing decryption
- fix sleeping in tipc accept routine"
* tag 'net-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (91 commits)
gve: Update MAINTAINERS list
can: esd_usb2: fix memory leak
can: ems_usb: fix memory leak
can: usb_8dev: fix memory leak
can: mcba_usb_start(): add missing urb->transfer_dma initialization
can: hi311x: fix a signedness bug in hi3110_cmd()
MAINTAINERS: add Yasushi SHOJI as reviewer for the Microchip CAN BUS Analyzer Tool driver
bpf: Fix leakage due to insufficient speculative store bypass mitigation
bpf: Introduce BPF nospec instruction for mitigating Spectre v4
sis900: Fix missing pci_disable_device() in probe and remove
net: let flow have same hash in two directions
nfc: nfcsim: fix use after free during module unload
tulip: windbond-840: Fix missing pci_disable_device() in probe and remove
sctp: fix return value check in __sctp_rcv_asconf_lookup
nfc: s3fwrn5: fix undefined parameter values in dev_err()
net/mlx5: Fix mlx5_vport_tbl_attr chain from u16 to u32
net/mlx5e: Fix nullptr in mlx5e_hairpin_get_mdev()
net/mlx5: Unload device upon firmware fatal error
net/mlx5e: Fix page allocation failure for ptp-RQ over SF
net/mlx5e: Fix page allocation failure for trap-RQ over SF
...
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Linus Torvalds
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e1dab4c02d |
ACPI fixes for 5.14-rc4
- Revert recent change of the ACPI IRQ resources handling that
attempted to improve the ACPI IRQ override selection logic, but
introduced serious regressions on some systems (Hui Wang).
- Fix up quirks for AMD platforms in the suspend-to-idle support
code so as to take upcoming systems using uPEP HID AMDI007 into
account as appropriate (Mario Limonciello).
- Fix the code retrieving DPTF attributes of the PCH FIVR so that
it agrees on the return data type with the ACPI control method
evaluated for this purpose (Srinivas Pandruvada).
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Merge tag 'acpi-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These revert a recent IRQ resources handling modification that turned
out to be problematic, fix suspend-to-idle handling on AMD platforms
to take upcoming systems into account properly and fix the retrieval
of the DPTF attributes of the PCH FIVR.
Specifics:
- Revert recent change of the ACPI IRQ resources handling that
attempted to improve the ACPI IRQ override selection logic, but
introduced serious regressions on some systems (Hui Wang).
- Fix up quirks for AMD platforms in the suspend-to-idle support code
so as to take upcoming systems using uPEP HID AMDI007 into account
as appropriate (Mario Limonciello).
- Fix the code retrieving DPTF attributes of the PCH FIVR so that it
agrees on the return data type with the ACPI control method
evaluated for this purpose (Srinivas Pandruvada)"
* tag 'acpi-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: DPTF: Fix reading of attributes
Revert "ACPI: resources: Add checks for ACPI IRQ override"
ACPI: PM: Add support for upcoming AMD uPEP HID AMDI007
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Linus Torvalds
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3a34b13a88 |
pipe: make pipe writes always wake up readers
Since commit |
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Rafael J. Wysocki
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e83f54eacf |
Merge branches 'acpi-resources' and 'acpi-dptf'
* acpi-resources: Revert "ACPI: resources: Add checks for ACPI IRQ override" * acpi-dptf: ACPI: DPTF: Fix reading of attributes |
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Linus Torvalds
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4669e13cd6 |
block-5.14-2021-07-30
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Linus Torvalds
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27eb687bcd |
io_uring-5.14-2021-07-30
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Linus Torvalds
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f6c5971bb7 |
libata-5.14-2021-07-30
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Linus Torvalds
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051df241e4 |
for-5.14-rc3-tag
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Linus Torvalds
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8723bc8fb3 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Jiri Kosina: - resume timing fix for intel-ish driver (Ye Xiang) - fix for using incorrect MMIO register in amd_sfh driver (Dylan MacKenzie) - Cintiq 24HDT / 27QHDT regression fix and touch processing fix for Wacom driver (Jason Gerecke) - device removal bugfix for ft260 driver (Michael Zaidman) - other small assorted fixes * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: HID: ft260: fix device removal due to USB disconnect HID: wacom: Skip processing of touches with negative slot values HID: wacom: Re-enable touch by default for Cintiq 24HDT / 27QHDT HID: Kconfig: Fix spelling mistake "Uninterruptable" -> "Uninterruptible" HID: apple: Add support for Keychron K1 wireless keyboard HID: fix typo in Kconfig HID: ft260: fix format type warning in ft260_word_show() HID: amd_sfh: Use correct MMIO register for DMA address HID: asus: Remove check for same LED brightness on set HID: intel-ish-hid: use async resume function |
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Linus Torvalds
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ad6ec09d96 |
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton: "7 patches. Subsystems affected by this patch series: lib, ocfs2, and mm (slub, migration, and memcg)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm/memcg: fix NULL pointer dereference in memcg_slab_free_hook() slub: fix unreclaimable slab stat for bulk free mm/migrate: fix NR_ISOLATED corruption on 64-bit mm: memcontrol: fix blocking rstat function called from atomic cgroup1 thresholding code ocfs2: issue zeroout to EOF blocks ocfs2: fix zero out valid data lib/test_string.c: move string selftest in the Runtime Testing menu |
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Jakub Kicinski
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8d67041228 |
linux-can-fixes-for-5.14-20210730
-----BEGIN PGP SIGNATURE----- iQFHBAABCgAxFiEEK3kIWJt9yTYMP3ehqclaivrt76kFAmEDowsTHG1rbEBwZW5n dXRyb25peC5kZQAKCRCpyVqK+u3vqb9iB/9mje9K6evhlrP/eHmhy50Tah5PTtUM SNLNBvvLxtinFSvqcmUdwt6eX9hSNqvUr4MGeqoSGUVj5WnbLPenVlqgqa+/eS4b mGVfC61RzNyloxTh/qxsqerWc2t9MO6HvC20lKHvxN0ZHleYRdWVkMxl7DUYDAvE h/WGTvc6G1//XdGbaOEoEcZSYfLGR0G5/uWDo83vpGA1lHfvmrVdcNi/tyLqLWzz qwatRqn5QQp/MiKN8VO3hFEAzwcqwEOcDdwdmqHZ5lN6qyUNMeDynPv3LuM01AlE ds+AzOcPuDm/CkRbMrrow1hR+y4xfIDrXqoD3qIY2mwRxzsMdO+IJlEn =3PEn -----END PGP SIGNATURE----- Merge tag 'linux-can-fixes-for-5.14-20210730' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can Marc Kleine-Budde says: ==================== pull-request: can 2021-07-30 The first patch is by me and adds Yasushi SHOJI as a reviewer for the Microchip CAN BUS Analyzer Tool driver. Dan Carpenter's patch fixes a signedness bug in the hi311x driver. Pavel Skripkin provides 4 patches, the first targets the mcba_usb driver by adding the missing urb->transfer_dma initialization, which was broken in a previous commit. The last 3 patches fix a memory leak in the usb_8dev, ems_usb and esd_usb2 driver. * tag 'linux-can-fixes-for-5.14-20210730' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can: can: esd_usb2: fix memory leak can: ems_usb: fix memory leak can: usb_8dev: fix memory leak can: mcba_usb_start(): add missing urb->transfer_dma initialization can: hi311x: fix a signedness bug in hi3110_cmd() MAINTAINERS: add Yasushi SHOJI as reviewer for the Microchip CAN BUS Analyzer Tool driver ==================== Link: https://lore.kernel.org/r/20210730070526.1699867-1-mkl@pengutronix.de Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
Wang Hai
|
121dffe20b |
mm/memcg: fix NULL pointer dereference in memcg_slab_free_hook()
When I use kfree_rcu() to free a large memory allocated by kmalloc_node(),
the following dump occurs.
BUG: kernel NULL pointer dereference, address: 0000000000000020
[...]
Oops: 0000 [#1] SMP
[...]
Workqueue: events kfree_rcu_work
RIP: 0010:__obj_to_index include/linux/slub_def.h:182 [inline]
RIP: 0010:obj_to_index include/linux/slub_def.h:191 [inline]
RIP: 0010:memcg_slab_free_hook+0x120/0x260 mm/slab.h:363
[...]
Call Trace:
kmem_cache_free_bulk+0x58/0x630 mm/slub.c:3293
kfree_bulk include/linux/slab.h:413 [inline]
kfree_rcu_work+0x1ab/0x200 kernel/rcu/tree.c:3300
process_one_work+0x207/0x530 kernel/workqueue.c:2276
worker_thread+0x320/0x610 kernel/workqueue.c:2422
kthread+0x13d/0x160 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
When kmalloc_node() a large memory, page is allocated, not slab, so when
freeing memory via kfree_rcu(), this large memory should not be used by
memcg_slab_free_hook(), because memcg_slab_free_hook() is is used for
slab.
Using page_objcgs_check() instead of page_objcgs() in
memcg_slab_free_hook() to fix this bug.
Link: https://lkml.kernel.org/r/20210728145655.274476-1-wanghai38@huawei.com
Fixes:
|
||
Shakeel Butt
|
f227f0faf6 |
slub: fix unreclaimable slab stat for bulk free
SLUB uses page allocator for higher order allocations and update
unreclaimable slab stat for such allocations. At the moment, the bulk
free for SLUB does not share code with normal free code path for these
type of allocations and have missed the stat update. So, fix the stat
update by common code. The user visible impact of the bug is the
potential of inconsistent unreclaimable slab stat visible through
meminfo and vmstat.
Link: https://lkml.kernel.org/r/20210728155354.3440560-1-shakeelb@google.com
Fixes:
|
||
Aneesh Kumar K.V
|
b5916c0254 |
mm/migrate: fix NR_ISOLATED corruption on 64-bit
Similar to commit |
||
Johannes Weiner
|
30def93565 |
mm: memcontrol: fix blocking rstat function called from atomic cgroup1 thresholding code
Dan Carpenter reports:
The patch
|
||
Junxiao Bi
|
9449ad33be |
ocfs2: issue zeroout to EOF blocks
For punch holes in EOF blocks, fallocate used buffer write to zero the
EOF blocks in last cluster. But since ->writepage will ignore EOF
pages, those zeros will not be flushed.
This "looks" ok as commit
|
||
|
Junxiao Bi
|
f267aeb6de |
ocfs2: fix zero out valid data
If append-dio feature is enabled, direct-io write and fallocate could
run in parallel to extend file size, fallocate used "orig_isize" to
record i_size before taking "ip_alloc_sem", when
ocfs2_zeroout_partial_cluster() zeroout EOF blocks, i_size maybe already
extended by ocfs2_dio_end_io_write(), that will cause valid data zeroed
out.
Link: https://lkml.kernel.org/r/20210722054923.24389-1-junxiao.bi@oracle.com
Fixes:
|
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Matteo Croce
|
b2ff70a01a |
lib/test_string.c: move string selftest in the Runtime Testing menu
STRING_SELFTEST is presented in the "Library routines" menu. Move it in Kernel hacking > Kernel Testing and Coverage > Runtime Testing together with other similar tests found in lib/ --- Runtime Testing <*> Test functions located in the hexdump module at runtime <*> Test string functions (NEW) <*> Test functions located in the string_helpers module at runtime <*> Test strscpy*() family of functions at runtime <*> Test kstrto*() family of functions at runtime <*> Test printf() family of functions at runtime <*> Test scanf() family of functions at runtime Link: https://lkml.kernel.org/r/20210719185158.190371-1-mcroce@linux.microsoft.com Signed-off-by: Matteo Croce <mcroce@microsoft.com> Cc: Peter Rosin <peda@axentia.se> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Catherine Sullivan
|
028a71775f |
gve: Update MAINTAINERS list
The team maintaining the gve driver has undergone some changes, this updates the MAINTAINERS file accordingly. Signed-off-by: Catherine Sullivan <csully@google.com> Signed-off-by: Jon Olson <jonolson@google.com> Signed-off-by: David Awogbemila <awogbemila@google.com> Signed-off-by: Jeroen de Borst <jeroendb@google.com> Link: https://lore.kernel.org/r/20210729155258.442650-1-csully@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Lukas Bulwahn
|
094121ef81 |
arch: Kconfig: clean up obsolete use of HAVE_IDE
The arch-specific Kconfig files use HAVE_IDE to indicate if IDE is supported. As IDE support and the HAVE_IDE config vanishes with commit |
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Pavel Skripkin
|
928150fad4 |
can: esd_usb2: fix memory leak
In esd_usb2_setup_rx_urbs() MAX_RX_URBS coherent buffers are allocated
and there is nothing, that frees them:
1) In callback function the urb is resubmitted and that's all
2) In disconnect function urbs are simply killed, but URB_FREE_BUFFER
is not set (see esd_usb2_setup_rx_urbs) and this flag cannot be used
with coherent buffers.
So, all allocated buffers should be freed with usb_free_coherent()
explicitly.
Side note: This code looks like a copy-paste of other can drivers. The
same patch was applied to mcba_usb driver and it works nice with real
hardware. There is no change in functionality, only clean-up code for
coherent buffers.
Fixes:
|
||
|
Pavel Skripkin
|
9969e3c5f4 |
can: ems_usb: fix memory leak
In ems_usb_start() MAX_RX_URBS coherent buffers are allocated and
there is nothing, that frees them:
1) In callback function the urb is resubmitted and that's all
2) In disconnect function urbs are simply killed, but URB_FREE_BUFFER
is not set (see ems_usb_start) and this flag cannot be used with
coherent buffers.
So, all allocated buffers should be freed with usb_free_coherent()
explicitly.
Side note: This code looks like a copy-paste of other can drivers. The
same patch was applied to mcba_usb driver and it works nice with real
hardware. There is no change in functionality, only clean-up code for
coherent buffers.
Fixes:
|
||
|
Pavel Skripkin
|
0e865f0c31 |
can: usb_8dev: fix memory leak
In usb_8dev_start() MAX_RX_URBS coherent buffers are allocated and
there is nothing, that frees them:
1) In callback function the urb is resubmitted and that's all
2) In disconnect function urbs are simply killed, but URB_FREE_BUFFER
is not set (see usb_8dev_start) and this flag cannot be used with
coherent buffers.
So, all allocated buffers should be freed with usb_free_coherent()
explicitly.
Side note: This code looks like a copy-paste of other can drivers. The
same patch was applied to mcba_usb driver and it works nice with real
hardware. There is no change in functionality, only clean-up code for
coherent buffers.
Fixes:
|
||
|
Pavel Skripkin
|
fc43fb69a7 |
can: mcba_usb_start(): add missing urb->transfer_dma initialization
Yasushi reported, that his Microchip CAN Analyzer stopped working since commit |
||
Dan Carpenter
|
f6b3c7848e |
can: hi311x: fix a signedness bug in hi3110_cmd()
The hi3110_cmd() is supposed to return zero on success and negative
error codes on failure, but it was accidentally declared as a u8 when
it needs to be an int type.
Fixes:
|
||
Marc Kleine-Budde
|
8a7b46fa79 |
MAINTAINERS: add Yasushi SHOJI as reviewer for the Microchip CAN BUS Analyzer Tool driver
This patch adds Yasushi SHOJI as a reviewer for the Microchip CAN BUS Analyzer Tool driver. Link: https://lore.kernel.org/r/20210726111619.1023991-1-mkl@pengutronix.de Acked-by: Yasushi SHOJI <yashi@spacecubics.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> |
||
|
Linus Torvalds
|
764a5bc89b |
drm fixes for 5.14-rc4
amdgpu: - Fix resource leak in an error path - Avoid stack contents exposure in error path - pmops check fix for S0ix vs S3 - DCN 2.1 display fixes - DCN 2.0 display fix - Backlight control fix for laptops with HDR panels - Maintainers updates i915: - Fix vbt port mask - Fix around reading the right DSC disable fuse in display_ver 10 - Split display version 9 and 10 in intel_setup_outputs msm: - iommu fault display fix - misc dp compliance fixes - dpu reg sizing fix panel: - Fix bpc for ytc700tlag_05_201c ttm: - debugfs init fixes -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmEDT9QACgkQDHTzWXnE hr63cQ/9FeQqDC1XLyA9P9N/No07jIK6TLOforMej4IhQ5csKOHPtCHw00Mf2cio WaSqE3SkaKlRbU6TZDnfZasuWgHBatHINOEufk/1qT6T4s3cMd0NWnf/k5HzVD+u xVWAXsNUavieFsRVW7QuehHyM/qtcjeQrJ1m2U5Uho+ytTiT7/x9NjbVjYdgBja0 nyOyTeu9YASLvCtwL8NdIdViaCfT1ayrq/oZqdOEVh7vKigCFkCUIbaan4sXb8vw qJVAI9ngp6+9bo7+OD0GvcM576Cw9qLesLR23eKls1NcE56mYS8pG7t6sH5gX4ow tI+pE3Vq79qH+Rlc+9BmAYbsRISSUFIZ+lTLt9fBCf8CcuYtu7hDJMaQV/Oqc61o Eh0aCwT9il2Ys3OIEdCp0g3NLJUw+GMyzBEhm7FXH8iF0+/fYSxbkNaPTKjK3uEa 3th1oCJ0vfMlaS/kGah7H1nKfIrD04z9MwxUEkYpX8FoUApP+uNs672irG1h0nJf J8NL/ohHpoQ8j7n75IGIYMuSlCQY34qq4Ux3Lef+Q5wqYptk2nWHesk/bKdtHtWj HXsRg7tva6q1j05IQI9wVZcpXJzTSTatlE9T6L4oPTJ3g/LVdrJ3MMETuUphThbW tZ7Xma1du+XZTgnRPYz67vnpeC3CLzQd6y9tHzZV2jm2p3+ntZQ= =Dn5J -----END PGP SIGNATURE----- Merge tag 'drm-fixes-2021-07-30' of git://anongit.freedesktop.org/drm/drm Pull drm fixes from Dave Airlie: "Regular drm fixes pull, seems about the right size, lots of small fixes across the board, mostly amdgpu, but msm and i915 are in there along with panel and ttm. amdgpu: - Fix resource leak in an error path - Avoid stack contents exposure in error path - pmops check fix for S0ix vs S3 - DCN 2.1 display fixes - DCN 2.0 display fix - Backlight control fix for laptops with HDR panels - Maintainers updates i915: - Fix vbt port mask - Fix around reading the right DSC disable fuse in display_ver 10 - Split display version 9 and 10 in intel_setup_outputs msm: - iommu fault display fix - misc dp compliance fixes - dpu reg sizing fix panel: - Fix bpc for ytc700tlag_05_201c ttm: - debugfs init fixes" * tag 'drm-fixes-2021-07-30' of git://anongit.freedesktop.org/drm/drm: maintainers: add bugs and chat URLs for amdgpu drm/amdgpu/display: only enable aux backlight control for OLED panels drm/amd/display: ensure dentist display clock update finished in DCN20 drm/amd/display: Add missing DCN21 IP parameter drm/amd/display: Guard DST_Y_PREFETCH register overflow in DCN21 drm/amdgpu: Check pmops for desired suspend state drm/msm/dp: Initialize dp->aux->drm_dev before registration drm/msm/dp: signal audio plugged change at dp_pm_resume drm/msm/dp: Initialize the INTF_CONFIG register drm/msm/dp: use dp_ctrl_off_link_stream during PHY compliance test run drm/msm: Fix display fault handling drm/msm/dpu: Fix sm8250_mdp register length drm/amdgpu: Avoid printing of stack contents on firmware load error drm/amdgpu: Fix resource leak on probe error path drm/i915/display: split DISPLAY_VER 9 and 10 in intel_setup_outputs() drm/i915: fix not reading DSC disable fuse in GLK drm/i915/bios: Fix ports mask drm/panel: panel-simple: Fix proper bpc for ytc700tlag_05_201c drm/ttm: Initialize debugfs from ttm_global_init() |
||
|
Linus Torvalds
|
c71a2f65e7 |
fallthrough fixes for Clang for 5.14-rc4
Hi Linus, Please, pull the following patches that fix some fall-through warnings when building with Clang and -Wimplicit-fallthrough on ARM. Thanks -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEkmRahXBSurMIg1YvRwW0y0cG2zEFAmEC7NQACgkQRwW0y0cG 2zF5kRAAoK+t196vpkSzP6d72l5Odg9QpA0fz1UTfhEj7sH0mojDb7NzWBx9e3Ly yR6XINBPCtBSyaFWwPLLJ1yP1kQ3cmtnaT04CNe7G1d7v/HFHbZ7lKEW63o6EEkD WpJGk4omAIubikXfVo0alLHA6SLeovvf1rcoQHcSUqdaRLZdyaXWTzByz4wLs+Mr xBOVWlVZFU3VGjJ9fUMo9sAWgaMYg2B9gWWkGA8upkmlYy8aXfthFoF597hA21qb EK3f8BsFBoHX253PYaFswKlPdy1WCDaGTzcoOsSQsb2FcVDUEOt7faQ8jSCicFzY I32G+6vWuA3XKScgTALOGHnqbzA0Tho1EywleJ6gFwWqkh12ZzRvflaK3KHQGdNL sJliAx0bdKvmJQ+ydxlxD2kHNE8md1WO2XzyKVsoy8hnXuhwfkAFjU/Y3V85tb89 f9AIZqzmOVlx+MCz105hG1YfZDWNJwnV3H5rmZaPqHX8q9b1OSxHuFumWcy+KjI7 XCW0vTbS+n7ZQ/kltE6iRG3uIKAeDSixkBmknS5SRmb8q2aD+F9cSvDcFpEevyvq sCElgeKwtASGJekz63tQNN772vLIRdFtyyPFBEfLPHnHxtU3IJfOGM6zbIpZHytl s06ZoJITAqcRp8X30y1y/6bUJzU7GvKtqLp0ZVQgijFVZPvS34c= =LGid -----END PGP SIGNATURE----- Merge tag 'fallthrough-fixes-clang-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux Pull fallthrough fixes from Gustavo Silva: "Fix some fall-through warnings when building with Clang and '-Wimplicit-fallthrough' on ARM" * tag 'fallthrough-fixes-clang-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: scsi: fas216: Fix fall-through warning for Clang scsi: acornscsi: Fix fall-through warning for clang ARM: riscpc: Fix fall-through warning for Clang |
||
|
Linus Torvalds
|
cade08a572 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha
Pull alpha updates from Matt Turner: "They're mostly small janitorial fixes but there's also more important ones: - drop the alpha-specific x86 binary loader (David Hildenbrand) - regression fix for at least Marvel platforms (Mike Rapoport) - fix for a scary-looking typo (Zheng Yongjun)" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha: alpha: register early reserved memory in memblock alpha: fix spelling mistakes alpha: Remove space between * and parameter name alpha: fp_emul: avoid init/cleanup_module names alpha: Add syscall_get_return_value() binfmt: remove support for em86 (alpha only) alpha: fix typos in a comment alpha: defconfig: add necessary configs for boot testing alpha: Send stop IPI to send to online CPUs alpha: convert comma to semicolon alpha: remove undef inline in compiler.h alpha: Kconfig: Replace HTTP links with HTTPS ones alpha: __udiv_qrnnd should be exported |
||
Gustavo A. R. Silva
|
cb163627e6 |
scsi: fas216: Fix fall-through warning for Clang
Fix the following fallthrough warning (on ARM):
drivers/scsi/arm/fas216.c:1379:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
default:
^
drivers/scsi/arm/fas216.c:1379:2: note: insert 'break;' to avoid fall-through
default:
^
break;
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/lkml/202107260355.bF00i5bi-lkp@intel.com/
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
|
||
|
Gustavo A. R. Silva
|
eb4f520ca6 |
scsi: acornscsi: Fix fall-through warning for clang
Fix the following fallthrough warning (on ARM):
drivers/scsi/arm/acornscsi.c:2651:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case res_success:
^
drivers/scsi/arm/acornscsi.c:2651:2: note: insert '__attribute__((fallthrough));' to silence this warning
case res_success:
^
__attribute__((fallthrough));
drivers/scsi/arm/acornscsi.c:2651:2: note: insert 'break;' to avoid fall-through
case res_success:
^
break;
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/lkml/202107260355.bF00i5bi-lkp@intel.com/
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
|
||
|
Gustavo A. R. Silva
|
696e572dc8 |
ARM: riscpc: Fix fall-through warning for Clang
Fix the following fallthrough warning:
arch/arm/mach-rpc/riscpc.c:52:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
default:
^
arch/arm/mach-rpc/riscpc.c:52:2: note: insert 'break;' to avoid fall-through
default:
^
break;
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/lkml/202107260355.bF00i5bi-lkp@intel.com/
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
|
||
|
Linus Torvalds
|
7e96bf4762 |
ARM:
- Fix MTE shared page detection
- Enable selftest's use of PMU registers when asked to
s390:
- restore 5.13 debugfs names
x86:
- fix sizes for vcpu-id indexed arrays
- fixes for AMD virtualized LAPIC (AVIC)
- other small bugfixes
Generic:
- access tracking performance test
- dirty_log_perf_test command line parsing fix
- Fix selftest use of obsolete pthread_yield() in favour of sched_yield()
- use cpu_relax when halt polling
- fixed missing KVM_CLEAR_DIRTY_LOG compat ioctl
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"ARM:
- Fix MTE shared page detection
- Enable selftest's use of PMU registers when asked to
s390:
- restore 5.13 debugfs names
x86:
- fix sizes for vcpu-id indexed arrays
- fixes for AMD virtualized LAPIC (AVIC)
- other small bugfixes
Generic:
- access tracking performance test
- dirty_log_perf_test command line parsing fix
- Fix selftest use of obsolete pthread_yield() in favour of
sched_yield()
- use cpu_relax when halt polling
- fixed missing KVM_CLEAR_DIRTY_LOG compat ioctl"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: add missing compat KVM_CLEAR_DIRTY_LOG
KVM: use cpu_relax when halt polling
KVM: SVM: use vmcb01 in svm_refresh_apicv_exec_ctrl
KVM: SVM: tweak warning about enabled AVIC on nested entry
KVM: SVM: svm_set_vintr don't warn if AVIC is active but is about to be deactivated
KVM: s390: restore old debugfs names
KVM: SVM: delay svm_vcpu_init_msrpm after svm->vmcb is initialized
KVM: selftests: Introduce access_tracking_perf_test
KVM: selftests: Fix missing break in dirty_log_perf_test arg parsing
x86/kvm: fix vcpu-id indexed array sizes
KVM: x86: Check the right feature bit for MSR_KVM_ASYNC_PF_ACK access
docs: virt: kvm: api.rst: replace some characters
KVM: Documentation: Fix KVM_CAP_ENFORCE_PV_FEATURE_CPUID name
KVM: nSVM: Swap the parameter order for svm_copy_vmrun_state()/svm_copy_vmloadsave_state()
KVM: nSVM: Rename nested_svm_vmloadsave() to svm_copy_vmloadsave_state()
KVM: arm64: selftests: get-reg-list: actually enable pmu regs in pmu sublist
KVM: selftests: change pthread_yield to sched_yield
KVM: arm64: Fix detection of shared VMAs on guest fault
|
||
|
Linus Torvalds
|
2b99c470d5 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu fix from Greg Ungerer: "A single compile time fix" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k/coldfire: change pll var. to clk_pll |
||
David Sterba
|
7280305eb5 |
btrfs: calculate number of eb pages properly in csum_tree_block
Building with -Warray-bounds on systems with 64K pages there's a
warning:
fs/btrfs/disk-io.c: In function ‘csum_tree_block’:
fs/btrfs/disk-io.c:226:34: warning: array subscript 1 is above array bounds of ‘struct page *[1]’ [-Warray-bounds]
226 | kaddr = page_address(buf->pages[i]);
| ~~~~~~~~~~^~~
./include/linux/mm.h:1630:48: note: in definition of macro ‘page_address’
1630 | #define page_address(page) lowmem_page_address(page)
| ^~~~
In file included from fs/btrfs/ctree.h:32,
from fs/btrfs/disk-io.c:23:
fs/btrfs/extent_io.h:98:15: note: while referencing ‘pages’
98 | struct page *pages[1];
| ^~~~~
The compiler has no way to know that in that case the nodesize is exactly
PAGE_SIZE, so the resulting number of pages will be correct (1).
Let's use num_extent_pages that makes the case nodesize == PAGE_SIZE
explicitly 1.
Reported-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
|
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Michael Zaidman
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db8d3a2127 |
HID: ft260: fix device removal due to USB disconnect
This commit fixes a functional regression introduced by the commit |
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Dave Airlie
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d28e2568ac |
Merge tag 'amd-drm-fixes-5.14-2021-07-28' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-5.14-2021-07-28: amdgpu: - Fix resource leak in an error path - Avoid stack contents exposure in error path - pmops check fix for S0ix vs S3 - DCN 2.1 display fixes - DCN 2.0 display fix - Backlight control fix for laptops with HDR panels - Maintainers updates Signed-off-by: Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210729025817.4145-1-alexander.deucher@amd.com |
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Mike Rapoport
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640b7ea5f8 |
alpha: register early reserved memory in memblock
The memory reserved by console/PALcode or non-volatile memory is not added to memblock.memory. Since commit |
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Dave Airlie
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80c7917d7e |
Display related fixes:
- Fix vbt port mask - Fix around reading the right DSC disable fuse in display_ver 10 - Split display version 9 and 10 in intel_setup_outputs -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEbSBwaO7dZQkcLOKj+mJfZA7rE8oFAmEBetMACgkQ+mJfZA7r E8r3gwgAnGKsblTbSYahQp8syGDgsVZ9/lykUWCrzk+oRfkZmpQrkclEQmCkVe9t QliEK4aLdEB5FHvpgsNaxArVbU9PiDbFJ9HRGjNV5HlNavvvEFCoD92iegqrDWAu l79VySq5umeTczf7yGJ8+wygh11lVe7RCeUu5iZUD5LdngNJe/ukkMU5Mxad+xok iHFKm8UpDDWm+9SfT0Nuf68NdZlM57AQumtLExWeMwypgDahr/r/A2wMiGS0XXdc wikAOodB5y664TMGclfZNbF6OIEEX1awuHsB3uxQBmYWui+DuROD12D6VOkPmhF8 7dVu17jXvh8e9Mva2eAJ4AlJRc9r2w== =OV5Z -----END PGP SIGNATURE----- Merge tag 'drm-intel-fixes-2021-07-28' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes Display related fixes: - Fix vbt port mask - Fix around reading the right DSC disable fuse in display_ver 10 - Split display version 9 and 10 in intel_setup_outputs Signed-off-by: Dave Airlie <airlied@redhat.com> From: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/YQF63ruuE72x2T45@intel.com |
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Dave Airlie
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89e7ffd389 |
Short summary of fixes pull:
* panel: Fix bpc for ytc700tlag_05_201c * ttm: debugfs init fixes -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEchf7rIzpz2NEoWjlaA3BHVMLeiMFAmEBUsIACgkQaA3BHVML eiOhygf+I//Vsm6pDP+avcD7NMRdATMVImQv+BWTxDLqDtNoPy4+VvXtYc27cmFr ZYSdDaPI99voLauK9NZGJKdYULf1p3x8oLostzl3XDS+u3gS7kav5iWERDOjcySl 1KQlZfqWPkuJ/ZKrU6JVqsxaZRp6qZ95IJC44GR7myU3bxmO2OTPkd6jn1SidWZV bwtsWOOM0xQa9cU0IyORBT66LOJkiFR+RscHd6rCHQewNQs1HABxy/oWcSSYdVfC q/MeObkOI8B4zHYeFJoKZYdfdRbryLSGA8d9vGLiG6Zwvd+yelOiY7t08xchQqjX e2D5cx/uih2R5Tkodttvj5QkxAAHOQ== =hG0n -----END PGP SIGNATURE----- Merge tag 'drm-misc-fixes-2021-07-28' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes Short summary of fixes pull: * panel: Fix bpc for ytc700tlag_05_201c * ttm: debugfs init fixes Signed-off-by: Dave Airlie <airlied@redhat.com> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/YQFTESngqkeqzlhN@linux-uq9g.fritz.box |
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Dave Airlie
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792ca7e37b |
Merge tag 'drm-msm-fixes-2021-07-27' of https://gitlab.freedesktop.org/drm/msm into drm-fixes
A few fixes for v5.14, including a fix for a crash if display triggers an iommu fault (which tends to happen at probe time on devices with bootloader fw that leaves display enabled as kernel starts) Signed-off-by: Dave Airlie <airlied@redhat.com> From: Rob Clark <robdclark@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGubeV_uzWhsqp_+EmQmPcPatnqWOQnARoing2YvQOHbyg@mail.gmail.com |
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David S. Miller
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fc16a5322e |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says: ==================== pull-request: bpf 2021-07-29 The following pull-request contains BPF updates for your *net* tree. We've added 9 non-merge commits during the last 14 day(s) which contain a total of 20 files changed, 446 insertions(+), 138 deletions(-). The main changes are: 1) Fix UBSAN out-of-bounds splat for showing XDP link fdinfo, from Lorenz Bauer. 2) Fix insufficient Spectre v4 mitigation in BPF runtime, from Daniel Borkmann, Piotr Krysiuk and Benedict Schlueter. 3) Batch of fixes for BPF sockmap found under stress testing, from John Fastabend. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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Daniel Borkmann
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2039f26f3a |
bpf: Fix leakage due to insufficient speculative store bypass mitigation
Spectre v4 gadgets make use of memory disambiguation, which is a set of techniques that execute memory access instructions, that is, loads and stores, out of program order; Intel's optimization manual, section 2.4.4.5: A load instruction micro-op may depend on a preceding store. Many microarchitectures block loads until all preceding store addresses are known. The memory disambiguator predicts which loads will not depend on any previous stores. When the disambiguator predicts that a load does not have such a dependency, the load takes its data from the L1 data cache. Eventually, the prediction is verified. If an actual conflict is detected, the load and all succeeding instructions are re-executed. |
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Daniel Borkmann
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f5e81d1117 |
bpf: Introduce BPF nospec instruction for mitigating Spectre v4
In case of JITs, each of the JIT backends compiles the BPF nospec instruction /either/ to a machine instruction which emits a speculation barrier /or/ to /no/ machine instruction in case the underlying architecture is not affected by Speculative Store Bypass or has different mitigations in place already. This covers both x86 and (implicitly) arm64: In case of x86, we use 'lfence' instruction for mitigation. In case of arm64, we rely on the firmware mitigation as controlled via the ssbd kernel parameter. Whenever the mitigation is enabled, it works for all of the kernel code with no need to provide any additional instructions here (hence only comment in arm64 JIT). Other archs can follow as needed. The BPF nospec instruction is specifically targeting Spectre v4 since i) we don't use a serialization barrier for the Spectre v1 case, and ii) mitigation instructions for v1 and v4 might be different on some archs. The BPF nospec is required for a future commit, where the BPF verifier does annotate intermediate BPF programs with speculation barriers. Co-developed-by: Piotr Krysiuk <piotras@gmail.com> Co-developed-by: Benedict Schlueter <benedict.schlueter@rub.de> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Piotr Krysiuk <piotras@gmail.com> Signed-off-by: Benedict Schlueter <benedict.schlueter@rub.de> Acked-by: Alexei Starovoitov <ast@kernel.org> |
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Ronnie Sahlberg
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b946dbcfa4 |
cifs: add missing parsing of backupuid
We lost parsing of backupuid in the switch to new mount API. Add it back. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Cc: <stable@vger.kernel.org> # v5.11+ Reported-by: Xiaoli Feng <xifeng@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> |
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Linus Torvalds
|
4010a52821 |
\n
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmEBWkcACgkQnJ2qBz9k QNlc2Af/dJBIzZmwPiqW/3vg8/2NihuKnhlkR0ytF5pGswDiZ/3jpNoapz53UeMy is73PwCqrBYII923Q//+TsiRSGELbmo5nY+xRKlAmg4yovVti+/fgkg2sYdHLfz5 SwMpZjtpqnJ6sfKY6wnN4nXJ0JfGR6Q52wfMWmYQbpQaHLPy1XVUBmKKh+TKwuqy 5S7OhYQ/sml3pdlHhQ5AoG0glgM12DiC5DvqJjwThWmZbsGNfpOw578XC9suCdKJ 6/Wvxm2KiKcltoSb/5LzRTOSIJNtBX7XXwUQewRXnXclEbZYhb5cob/HBkoAU0Nw 4LxVXzxnF3SDwx1thtkgoJ6qUclDWg== =/q9+ -----END PGP SIGNATURE----- Merge tag 'fixes_for_v5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull ext2 and reiserfs fixes from Jan Kara: "A fix for the ext2 conversion to kmap_local() and two reiserfs hardening fixes" * tag 'fixes_for_v5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: reiserfs: check directory items on read from disk fs/ext2: Avoid page_address on pages returned by ext2_get_page reiserfs: add check for root_inode in reiserfs_fill_super |
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|
Linus Torvalds
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dfe495362c |
platform-drivers-x86 for v5.14-2
Highlights: -amd-pmc fixes -think-lmi fixes -Various new hardware-ids The following is an automated git shortlog grouped by driver: amd-pmc: - Fix undefined reference to __udivdi3 - Fix missing unlock on error in amd_pmc_send_cmd() - Use return code on suspend - Add new acpi id for future PMC controllers - Add support for ACPI ID AMDI0006 - Add support for logging s0ix counters - Add support for logging SMU metrics - call dump registers only once - Fix SMU firmware reporting mechanism - Fix command completion code gigabyte-wmi: - add support for B550 Aorus Elite V2 intel-hid: - add Alder Lake ACPI device ID think-lmi: - Fix possible mem-leaks on tlmi_analyze() error-exit - Split kobject_init() and kobject_add() calls - Move pending_reboot_attr to the attributes sysfs dir - Add pending_reboot support wireless-hotkey: - remove hardcoded "hp" from the error message -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEEuvA7XScYQRpenhd+kuxHeUQDJ9wFAmEBMfkUHGhkZWdvZWRl QHJlZGhhdC5jb20ACgkQkuxHeUQDJ9yZ4AgAiYKZubpQ4CflNZ3PkSHtL8rb3Pqy lfM/bkTKi2u718yDMSxQrBslXxXsjyuzQ9/F2kxm21YL8R5G66QTXqayWFFPjtvo 7iiBv7JzP6vD132TwTiKZj6XRu2d0kXIbwGiK+nddXfOvDFwAMXiKDevVXqHXA2q llxDLEHYzst3JynJMsD3uaZiDw309DU++ElX0hCBEAnkJ0rVnPTcKbEys74hmRph 0D3GFkZKsHFcuvPUK6tC8fwLvV3fQaTVxp17cmE6b5OhADJSSQoJWjiMe7kFNnHk 9WrSCUfd2bXJqNBEpSmNuJ9L5I9zTCqrjwWFf126fdp1c1I1DUfw6LvLlg== =iuFO -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver fixes from Hans de Goede: "A set of bug-fixes and new hardware ids. Highlights: - amd-pmc fixes - think-lmi fixes - various new hardware-ids" * tag 'platform-drivers-x86-v5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: platform/x86: gigabyte-wmi: add support for B550 Aorus Elite V2 platform/x86: intel-hid: add Alder Lake ACPI device ID platform/x86: think-lmi: Fix possible mem-leaks on tlmi_analyze() error-exit platform/x86: think-lmi: Split kobject_init() and kobject_add() calls platform/x86: think-lmi: Move pending_reboot_attr to the attributes sysfs dir platform/x86: amd-pmc: Fix undefined reference to __udivdi3 platform/x86: amd-pmc: Fix missing unlock on error in amd_pmc_send_cmd() platform/x86: wireless-hotkey: remove hardcoded "hp" from the error message platform/x86: amd-pmc: Use return code on suspend platform/x86: amd-pmc: Add new acpi id for future PMC controllers platform/x86: amd-pmc: Add support for ACPI ID AMDI0006 platform/x86: amd-pmc: Add support for logging s0ix counters platform/x86: amd-pmc: Add support for logging SMU metrics platform/x86: amd-pmc: call dump registers only once platform/x86: amd-pmc: Fix SMU firmware reporting mechanism platform/x86: amd-pmc: Fix command completion code platform/x86: think-lmi: Add pending_reboot support |
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Tony Luck
|
25905f602f |
dmaengine: idxd: Change license on idxd.h to LGPL
This file was given GPL-2.0 license. But LGPL-2.1 makes more sense as it needs to be used by libraries outside of the kernel source tree. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Miklos Szeredi
|
cbcf01128d |
af_unix: fix garbage collect vs MSG_PEEK
unix_gc() assumes that candidate sockets can never gain an external
reference (i.e. be installed into an fd) while the unix_gc_lock is
held. Except for MSG_PEEK this is guaranteed by modifying inflight
count under the unix_gc_lock.
MSG_PEEK does not touch any variable protected by unix_gc_lock (file
count is not), yet it needs to be serialized with garbage collection.
Do this by locking/unlocking unix_gc_lock:
1) increment file count
2) lock/unlock barrier to make sure incremented file count is visible
to garbage collection
3) install file into fd
This is a lock barrier (unlike smp_mb()) that ensures that garbage
collection is run completely before or completely after the barrier.
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|