Commit 226fae124b ("vc_screen: move load of struct vc_data pointer in
vcs_read() to avoid UAF") moved the call to vcs_vc() into the loop.
While doing this it also moved the unconditional assignment of
ret = -ENXIO;
This unconditional assignment was valid outside the loop but within it
it clobbers the actual value of ret.
To avoid this only assign "ret = -ENXIO" when actually needed.
[ Also, the 'goto unlock_out" needs to be just a "break", so that it
does the right thing when it exits on later iterations when partial
success has happened - Linus ]
Reported-by: Storm Dragon <stormdragon2976@gmail.com>
Link: https://lore.kernel.org/lkml/Y%2FKS6vdql2pIsCiI@hotmail.com/
Fixes: 226fae124b ("vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF")
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/lkml/64981d94-d00c-4b31-9063-43ad0a384bde@t-8ch.de/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This fixes three issues on move extents ioctl without auto defrag:
a) In ocfs2_find_victim_alloc_group(), we have to convert bits to block
first in case of global bitmap.
b) In ocfs2_probe_alloc_group(), when finding enough bits in block
group bitmap, we have to back off move_len to start pos as well,
otherwise it may corrupt filesystem.
c) In ocfs2_ioctl_move_extents(), set me_threshold both for non-auto
and auto defrag paths. Otherwise it will set move_max_hop to 0 and
finally cause unexpectedly ENOSPC error.
Currently there are no tools triggering the above issues since
defragfs.ocfs2 enables auto defrag by default. Tested with manually
changing defragfs.ocfs2 to run non auto defrag path.
Link: https://lkml.kernel.org/r/20230220050526.22020-1-heming.zhao@suse.com
Signed-off-by: Heming Zhao <heming.zhao@suse.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
code path:
ocfs2_ioctl_move_extents
ocfs2_move_extents
ocfs2_defrag_extent
__ocfs2_move_extent
+ ocfs2_journal_access_di
+ ocfs2_split_extent //sub-paths call jbd2_journal_restart
+ ocfs2_journal_dirty //crash by jbs2 ASSERT
crash stacks:
PID: 11297 TASK: ffff974a676dcd00 CPU: 67 COMMAND: "defragfs.ocfs2"
#0 [ffffb25d8dad3900] machine_kexec at ffffffff8386fe01
#1 [ffffb25d8dad3958] __crash_kexec at ffffffff8395959d
#2 [ffffb25d8dad3a20] crash_kexec at ffffffff8395a45d
#3 [ffffb25d8dad3a38] oops_end at ffffffff83836d3f
#4 [ffffb25d8dad3a58] do_trap at ffffffff83833205
#5 [ffffb25d8dad3aa0] do_invalid_op at ffffffff83833aa6
#6 [ffffb25d8dad3ac0] invalid_op at ffffffff84200d18
[exception RIP: jbd2_journal_dirty_metadata+0x2ba]
RIP: ffffffffc09ca54a RSP: ffffb25d8dad3b70 RFLAGS: 00010207
RAX: 0000000000000000 RBX: ffff9706eedc5248 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffff97337029ea28 RDI: ffff9706eedc5250
RBP: ffff9703c3520200 R8: 000000000f46b0b2 R9: 0000000000000000
R10: 0000000000000001 R11: 00000001000000fe R12: ffff97337029ea28
R13: 0000000000000000 R14: ffff9703de59bf60 R15: ffff9706eedc5250
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#7 [ffffb25d8dad3ba8] ocfs2_journal_dirty at ffffffffc137fb95 [ocfs2]
#8 [ffffb25d8dad3be8] __ocfs2_move_extent at ffffffffc139a950 [ocfs2]
#9 [ffffb25d8dad3c80] ocfs2_defrag_extent at ffffffffc139b2d2 [ocfs2]
Analysis
This bug has the same root cause of 'commit 7f27ec978b ("ocfs2: call
ocfs2_journal_access_di() before ocfs2_journal_dirty() in
ocfs2_write_end_nolock()")'. For this bug, jbd2_journal_restart() is
called by ocfs2_split_extent() during defragmenting.
How to fix
For ocfs2_split_extent() can handle journal operations totally by itself.
Caller doesn't need to call journal access/dirty pair, and caller only
needs to call journal start/stop pair. The fix method is to remove
journal access/dirty from __ocfs2_move_extent().
The discussion for this patch:
https://oss.oracle.com/pipermail/ocfs2-devel/2023-February/000647.html
Link: https://lkml.kernel.org/r/20230217003717.32469-1-heming.zhao@suse.com
Signed-off-by: Heming Zhao <heming.zhao@suse.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Georgi's old email is still picked up by the likes of get_maintainer.pl
and it keeps bouncing every time one submits an interconnect patch. Map
it to his current @kernel.org one.
Link: https://lkml.kernel.org/r/20230217203516.826424-1-konrad.dybcio@linaro.org
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Acked-by: Georgi Djakov <djakov@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Kirill Tkhai <tkhai@ya.ru>
Cc: Qais Yousef <qyousef@layalina.io>
Cc: Vasily Averin <vasily.averin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
After a memory error happens on a clean folio, a process unexpectedly
receives SIGBUS when it accesses the error page. This SIGBUS killing is
pointless and simply degrades the level of RAS of the system, because the
clean folio can be dropped without any data lost on memory error handling
as we do for a clean pagecache.
When memory_failure() is called on a clean folio, try_to_unmap() is called
twice (one from split_huge_page() and one from hwpoison_user_mappings()).
The root cause of the issue is that pte conversion to hwpoisoned entry is
now done in the first call of try_to_unmap() because PageHWPoison is
already set at this point, while it's actually expected to be done in the
second call. This behavior disturbs the error handling operation like
removing pagecache, which results in the malfunction described above.
So convert TTU_IGNORE_HWPOISON into TTU_HWPOISON and set TTU_HWPOISON only
when we really intend to convert pte to hwpoison entry. This can prevent
other callers of try_to_unmap() from accidentally converting to hwpoison
entries.
Link: https://lkml.kernel.org/r/20230221085905.1465385-1-naoya.horiguchi@linux.dev
Fixes: a42634a6c0 ("readahead: Use a folio in read_pages()")
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
DFLTCC deflate with Z_NO_FLUSH might generate a corrupted stream when the
output buffer is not large enough to fit all the deflate output at once.
The problem takes place on closing the deflate block since flush_pending()
might leave some output bits not written. Similar problem for software
deflate with Z_BLOCK flush option (not supported by kernel zlib deflate)
has been fixed a while ago in userspace zlib but the fix never got to the
kernel.
Now flush_pending() flushes the bit buffer before copying out the byte
buffer, in order to really flush as much as possible.
Currently there are no users of DFLTCC deflate with Z_NO_FLUSH option in
the kernel so the problem remained hidden for a while.
This commit is based on the old zlib commit:
https://github.com/madler/zlib/commit/0b828b4
Link: https://lkml.kernel.org/r/20230221131617.3369978-2-zaslonko@linux.ibm.com
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
damon_get_folio() would always increase folio _refcount and
folio_isolate_lru() would increase folio _refcount if the folio's lru flag
is set.
If an unevictable folio isolated successfully, there will be two more
_refcount. The one from folio_isolate_lru() will be decreased in
folio_puback_lru(), but the other one from damon_get_folio() will be left
behind. This causes a pin page.
Whatever the case, the _refcount from damon_get_folio() should be
decreased.
Link: https://lkml.kernel.org/r/20230222064223.6735-1-andrew.yang@mediatek.com
Fixes: 57223ac295 ("mm/damon/paddr: support the pageout scheme")
Signed-off-by: andrew.yang <andrew.yang@mediatek.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> [5.16.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
In case 4, we are shrinking 'prev' (PPPP in the comment) and expanding
'mid' (NNNN). So we need to make sure 'mid' clones the anon_vma from
'prev', if it doesn't have any. After commit 0503ea8f5b ("mm/mmap:
remove __vma_adjust()") we can fail to do that due to wrong parameters for
dup_anon_vma(). The call is a no-op because res == next, adjust == mid
and mid == next. Fix it.
Link: https://lkml.kernel.org/r/ad91d62b-37eb-4b73-707a-3c45c9e16256@suse.cz
Fixes: 0503ea8f5b ("mm/mmap: remove __vma_adjust()")
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
access(2) remains commonly used, for example on exec:
access("/etc/ld.so.preload", R_OK)
or when running gcc: strace -c gcc empty.c
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
0.00 0.000000 0 42 26 access
It falls down to do_faccessat without the AT_EACCESS flag, which in turn
results in allocation of new creds in order to modify fsuid/fsgid and
caps. This is a very expensive process single-threaded and most notably
multi-threaded, with numerous structures getting refed and unrefed on
imminent new cred destruction.
Turns out for typical consumers the resulting creds would be identical
and this can be checked upfront, avoiding the hard work.
An access benchmark plugged into will-it-scale running on Cascade Lake
shows:
test proc before after
access1 1 1310582 2908735 (+121%) # distinct files
access1 24 4716491 63822173 (+1353%) # distinct files
access2 24 2378041 5370335 (+125%) # same file
The above benchmarks are not integrated into will-it-scale, but can be
found in a pull request:
https://github.com/antonblanchard/will-it-scale/pull/36/files
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In this round, we've got a huge number of patches that improve code readability
along with minor bug fixes, while we've mainly fixed some critical issues in
recently-added per-block age-based extent_cache, atomic write support, and some
folio cases.
Enhancement:
- add sysfs nodes to set last_age_weight and manage discard_io_aware_gran
- show ipu policy in debugfs
- reduce stack memory cost by using bitfield in struct f2fs_io_info
- introduce trace_f2fs_replace_atomic_write_block
- enhance iostat support and adds flush commands
Bug fix:
- revert "f2fs: truncate blocks in batch in __complete_revoke_list()"
- fix kernel crash on the atomic write abort flow
- call clear_page_private_reference in .{release,invalid}_folio
- support .migrate_folio for compressed inode
- fix cgroup writeback accounting with fs-layer encryption
- retry to update the inode page given data corruption
- fix kernel crash due to null io->bio
- fix some bugs in per-block age-based extent_cache:
a. wrong calculation of block age
b. update age extent in f2fs_do_zero_range()
c. update age extent correctly during truncation
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Merge tag 'f2fs-for-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, we've got a huge number of patches that improve code
readability along with minor bug fixes, while we've mainly fixed some
critical issues in recently-added per-block age-based extent_cache,
atomic write support, and some folio cases.
Enhancements:
- add sysfs nodes to set last_age_weight and manage
discard_io_aware_gran
- show ipu policy in debugfs
- reduce stack memory cost by using bitfield in struct f2fs_io_info
- introduce trace_f2fs_replace_atomic_write_block
- enhance iostat support and adds flush commands
Bug fixes:
- revert "f2fs: truncate blocks in batch in __complete_revoke_list()"
- fix kernel crash on the atomic write abort flow
- call clear_page_private_reference in .{release,invalid}_folio
- support .migrate_folio for compressed inode
- fix cgroup writeback accounting with fs-layer encryption
- retry to update the inode page given data corruption
- fix kernel crash due to NULL io->bio
- fix some bugs in per-block age-based extent_cache:
- wrong calculation of block age
- update age extent in f2fs_do_zero_range()
- update age extent correctly during truncation"
* tag 'f2fs-for-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (81 commits)
f2fs: drop unnecessary arg for f2fs_ioc_*()
f2fs: Revert "f2fs: truncate blocks in batch in __complete_revoke_list()"
f2fs: synchronize atomic write aborts
f2fs: fix wrong segment count
f2fs: replace si->sbi w/ sbi in stat_show()
f2fs: export ipu policy in debugfs
f2fs: make kobj_type structures constant
f2fs: fix to do sanity check on extent cache correctly
f2fs: add missing description for ipu_policy node
f2fs: fix to set ipu policy
f2fs: fix typos in comments
f2fs: fix kernel crash due to null io->bio
f2fs: use iostat_lat_type directly as a parameter in the iostat_update_and_unbind_ctx()
f2fs: add sysfs nodes to set last_age_weight
f2fs: fix f2fs_show_options to show nogc_merge mount option
f2fs: fix cgroup writeback accounting with fs-layer encryption
f2fs: fix wrong calculation of block age
f2fs: fix to update age extent in f2fs_do_zero_range()
f2fs: fix to update age extent correctly during truncation
f2fs: fix to avoid potential memory corruption in __update_iostat_latency()
...
Restore the vcs_size() handling in vcs_read() to what
it had been in previous version.
Fixes: 226fae124b ("vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF")
Suggested-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: George Kennedy <george.kennedy@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
KUnit's 'hooks.o' file need to be built-in whenever KUnit is enabled
(even if CONFIG_KUNIT=m). We'd previously attemtped to do this by
adding 'kunit/hooks.o' to obj-y in lib/Makefile, but this caused hooks.c
to be rebuilt even when it was unchanged.
Instead, always recurse into lib/kunit using obj-y when KUnit is
enabled, and add the hooks there.
Fixes: 7170b7ed6a ("kunit: Add "hooks" to call into KUnit when it's built as a module").
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/linux-kselftest/CAHk-=wiEf7irTKwPJ0jTMOF3CS-13UXmF6Fns3wuWpOZ_wGyZQ@mail.gmail.com/
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently, out of every Ralink SoC, only the dt-binding of the MT7621 SoC
uses pinctrl. Because of this, PINCTRL is not selected at all. Make
SOC_MT7621 select PINCTRL.
Remove PINCTRL_MT7621, enabling it for the MT7621 SoC will be handled under
the PINCTRL_MT7621 option.
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
In c0_compare_int_usable we clear compare interrupt by write value
just read out from counter to compare register.
However sometimes if those all instructions are graduated together
then it's possible that at the time compare register is written, the
counter haven't progressed, thus the interrupt is triggered again.
It also applies to QEMU that instructions is executed significantly
faster then counter.
Offset the value used to clear interrupt by one to prevent that happen.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
CP0_CMGCRBASE is not always available on CPS enabled system
such as early proAptiv.
For early SMP bring up where we can't safely access memeory,
we patch the entry of CPS NMI vector to inject CMGCR address
directly into register during early core bringup.
For VPE bringup as the core is already coherenct at that point
we just read the variable to obtain the address.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Current release - regressions:
- phy: multiple fixes for EEE rework
- wifi: wext: warn about usage only once
- wifi: ath11k: allow system suspend to survive ath11k
Current release - new code bugs:
- mlx5: Fix memory leak in IPsec RoCE creation
- ibmvnic: assign XPS map to correct queue index
Previous releases - regressions:
- netfilter: ip6t_rpfilter: Fix regression with VRF interfaces
- netfilter: ctnetlink: make event listener tracking global
- nf_tables: allow to fetch set elements when table has an owner
- mlx5:
- fix skb leak while fifo resync and push
- fix possible ptp queue fifo use-after-free
Previous releases - always broken:
- sched: fix action bind logic
- ptp: vclock: use mutex to fix "sleep on atomic" bug if driver
also uses a mutex
- netfilter: conntrack: fix rmmod double-free race
- netfilter: xt_length: use skb len to match in length_mt6,
avoid issues with BIG TCP
Misc:
- ice: remove unnecessary CONFIG_ICE_GNSS
- mlx5e: remove hairpin write debugfs files
- sched: act_api: move TCA_EXT_WARN_MSG to the correct hierarchy
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from wireless and netfilter.
The notable fixes here are the EEE fix which restores boot for many
embedded platforms (real and QEMU); WiFi warning suppression and the
ICE Kconfig cleanup.
Current release - regressions:
- phy: multiple fixes for EEE rework
- wifi: wext: warn about usage only once
- wifi: ath11k: allow system suspend to survive ath11k
Current release - new code bugs:
- mlx5: Fix memory leak in IPsec RoCE creation
- ibmvnic: assign XPS map to correct queue index
Previous releases - regressions:
- netfilter: ip6t_rpfilter: Fix regression with VRF interfaces
- netfilter: ctnetlink: make event listener tracking global
- nf_tables: allow to fetch set elements when table has an owner
- mlx5:
- fix skb leak while fifo resync and push
- fix possible ptp queue fifo use-after-free
Previous releases - always broken:
- sched: fix action bind logic
- ptp: vclock: use mutex to fix "sleep on atomic" bug if driver also
uses a mutex
- netfilter: conntrack: fix rmmod double-free race
- netfilter: xt_length: use skb len to match in length_mt6, avoid
issues with BIG TCP
Misc:
- ice: remove unnecessary CONFIG_ICE_GNSS
- mlx5e: remove hairpin write debugfs files
- sched: act_api: move TCA_EXT_WARN_MSG to the correct hierarchy"
* tag 'net-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (53 commits)
tcp: tcp_check_req() can be called from process context
net: phy: c45: fix network interface initialization failures on xtensa, arm:cubieboard
xen-netback: remove unused variables pending_idx and index
net/sched: act_api: move TCA_EXT_WARN_MSG to the correct hierarchy
net: dsa: ocelot_ext: remove unnecessary phylink.h include
net: mscc: ocelot: fix duplicate driver name error
net: dsa: felix: fix internal MDIO controller resource length
net: dsa: seville: ignore mscc-miim read errors from Lynx PCS
net/sched: act_sample: fix action bind logic
net/sched: act_mpls: fix action bind logic
net/sched: act_pedit: fix action bind logic
wifi: wext: warn about usage only once
wifi: mt76: usb: fix use-after-free in mt76u_free_rx_queue
qede: avoid uninitialized entries in coal_entry array
nfc: fix memory leak of se_io context in nfc_genl_se_io
ice: remove unnecessary CONFIG_ICE_GNSS
net/sched: cls_api: Move call to tcf_exts_miss_cookie_base_destroy()
ibmvnic: Assign XPS map to correct queue index
docs: net: fix inaccuracies in msg_zerocopy.rst
tools: net: add __pycache__ to gitignore
...
Unable to handle kernel paging request at virtual address 73657420 when execute
[73657420] *pgd=00000000
Internal error: Oops: 80000005 [#1] ARM
CPU: 0 PID: 1 Comm: swapper Tainted: G N 6.2.0-rc7-00133-g373f26a81164-dirty #9
Hardware name: Generic DT based system
PC is at 0x73657420
LR is at kunit_run_tests+0x3e0/0x5f4
On x86 with GCC 12, the missing array terminators did not seem to
matter. Other platforms appear to be more picky.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Allow the new GSS Kerberos encryption type test suites to run
outside of the kunit infrastructure. Replace the assertion that
fires when lookup_enctype() so that the case is skipped instead of
failing outright.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This is a follow up of commit 0a375c8224 ("tcp: tcp_rtx_synack()
can be called from process context").
Frederick Lawler reported another "__this_cpu_add() in preemptible"
warning caused by the same reason.
In my former patch I took care of tcp_rtx_synack()
but forgot that tcp_check_req() also contained some SNMP updates.
Note that some parts of tcp_check_req() always run in BH context,
I added a comment to clarify this.
Fixes: 8336886f78 ("tcp: TCP Fast Open Server - support TFO listeners")
Link: https://lore.kernel.org/netdev/8cd33923-a21d-397c-e46b-2a068c287b03@cloudflare.com/T/
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Frederick Lawler <fred@cloudflare.com>
Tested-by: Frederick Lawler <fred@cloudflare.com>
Link: https://lore.kernel.org/r/20230227083336.4153089-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
building with gcc and W=1 reports
drivers/net/xen-netback/netback.c:886:21: error: variable
‘pending_idx’ set but not used [-Werror=unused-but-set-variable]
886 | u16 pending_idx;
| ^~~~~~~~~~~
pending_idx is not used so remove it. Since index was only
used to set pending_idx, remove index as well.
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20230226163429.2351600-1-trix@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
First set of fixes for v6.3. We have only three oneliners. The most
important one is the patch reducing warnings about the Wireless
Extensions usage, reported by Linus.
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Merge tag 'wireless-2023-02-27' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless
Kalle Valo says:
====================
wireless fixes for v6.3
First set of fixes for v6.3. We have only three oneliners. The most
important one is the patch reducing warnings about the Wireless
Extensions usage, reported by Linus.
* tag 'wireless-2023-02-27' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
wifi: wext: warn about usage only once
wifi: mt76: usb: fix use-after-free in mt76u_free_rx_queue
wifi: ath11k: allow system suspend to survive ath11k
====================
Link: https://lore.kernel.org/r/20230227131053.BD779C433D2@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
A few bugfixes already came up during the merge window. Samsung, ASpeed,
Spear have minor DT changes, in case of Samsung this fixes a regression
compared to earlier versions.
Bartosz takes over as the primary maintainer for the TI DaVinci platform,
and we get a few last minute defconfig changes.
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Merge tag 'arm-fixes-6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"A few bugfixes already came up during the merge window. Samsung,
ASpeed, Spear have minor DT changes, in case of Samsung this fixes a
regression compared to earlier versions.
Bartosz takes over as the primary maintainer for the TI DaVinci
platform, and we get a few last minute defconfig changes"
* tag 'arm-fixes-6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
ARM: dts: spear320-hmi: correct STMPE GPIO compatible
ARM: dts: aspeed: p10bmc: Update battery node name
arm64: defconfig: Add IOSCHED_BFQ to the default configs
arm64: defconfig: Fix unintentional disablement of PCI on i.MX
ARM: dts: exynos: correct TMU phandle in Odroid XU3 family
ARM: dts: exynos: correct TMU phandle in Odroid HC1
ARM: dts: exynos: correct TMU phandle in Odroid XU
ARM: dts: exynos: correct TMU phandle in Exynos5250
ARM: dts: exynos: correct TMU phandle in Exynos4210
ARM: dts: exynos: correct TMU phandle in Exynos4
MAINTAINERS: make me the maintainer of DaVinci platforms
As usual, there are lots of minor driver changes across SoC platforms
from NXP, Amlogic, AMD Zynq, Mediatek, Qualcomm, Apple and Samsung.
These usually add support for additional chip variations in existing
drivers, but also add features or bugfixes.
The SCMI firmware subsystem gains a unified raw userspace interface
through debugfs, which can be used for validation purposes.
Newly added drivers include:
- New power management drivers for StarFive JH7110, Allwinner D1 and
Renesas RZ/V2M
- A driver for Qualcomm battery and power supply status
- A SoC device driver for identifying Nuvoton WPCM450 chips
- A regulator coupler driver for Mediatek MT81xxv
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Merge tag 'soc-drivers-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC driver updates from Arnd Bergmann:
"As usual, there are lots of minor driver changes across SoC platforms
from NXP, Amlogic, AMD Zynq, Mediatek, Qualcomm, Apple and Samsung.
These usually add support for additional chip variations in existing
drivers, but also add features or bugfixes.
The SCMI firmware subsystem gains a unified raw userspace interface
through debugfs, which can be used for validation purposes.
Newly added drivers include:
- New power management drivers for StarFive JH7110, Allwinner D1 and
Renesas RZ/V2M
- A driver for Qualcomm battery and power supply status
- A SoC device driver for identifying Nuvoton WPCM450 chips
- A regulator coupler driver for Mediatek MT81xxv"
* tag 'soc-drivers-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (165 commits)
power: supply: Introduce Qualcomm PMIC GLINK power supply
soc: apple: rtkit: Do not copy the reg state structure to the stack
soc: sunxi: SUN20I_PPU should depend on PM
memory: renesas-rpc-if: Remove redundant division of dummy
soc: qcom: socinfo: Add IDs for IPQ5332 and its variant
dt-bindings: arm: qcom,ids: Add IDs for IPQ5332 and its variant
dt-bindings: power: qcom,rpmpd: add RPMH_REGULATOR_LEVEL_LOW_SVS_L1
firmware: qcom_scm: Move qcom_scm.h to include/linux/firmware/qcom/
MAINTAINERS: Update qcom CPR maintainer entry
dt-bindings: firmware: document Qualcomm SM8550 SCM
dt-bindings: firmware: qcom,scm: add qcom,scm-sa8775p compatible
soc: qcom: socinfo: Add Soc IDs for IPQ8064 and variants
dt-bindings: arm: qcom,ids: Add Soc IDs for IPQ8064 and variants
soc: qcom: socinfo: Add support for new field in revision 17
soc: qcom: smd-rpm: Add IPQ9574 compatible
soc: qcom: pmic_glink: remove redundant calculation of svid
soc: qcom: stats: Populate all subsystem debugfs files
dt-bindings: soc: qcom,rpmh-rsc: Update to allow for generic nodes
soc: qcom: pmic_glink: add CONFIG_NET/CONFIG_OF dependencies
soc: qcom: pmic_glink: Introduce altmode support
...
Explain why STIBP is needed with legacy IBRS as currently implemented
(KERNEL_IBRS) and why STIBP is not needed when enhanced IBRS is enabled.
Fixes: 7c693f54c8 ("x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS")
Signed-off-by: KP Singh <kpsingh@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230227060541.1939092-2-kpsingh@kernel.org
When plain IBRS is enabled (not enhanced IBRS), the logic in
spectre_v2_user_select_mitigation() determines that STIBP is not needed.
The IBRS bit implicitly protects against cross-thread branch target
injection. However, with legacy IBRS, the IBRS bit is cleared on
returning to userspace for performance reasons which leaves userspace
threads vulnerable to cross-thread branch target injection against which
STIBP protects.
Exclude IBRS from the spectre_v2_in_ibrs_mode() check to allow for
enabling STIBP (through seccomp/prctl() by default or always-on, if
selected by spectre_v2_user kernel cmdline parameter).
[ bp: Massage. ]
Fixes: 7c693f54c8 ("x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS")
Reported-by: José Oliveira <joseloliveira11@gmail.com>
Reported-by: Rodrigo Branco <rodrigo@kernelhacking.com>
Signed-off-by: KP Singh <kpsingh@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230220120127.1975241-1-kpsingh@kernel.org
Link: https://lore.kernel.org/r/20230221184908.2349578-1-kpsingh@kernel.org
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Merge tag 'fuse-update-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse updates from Miklos Szeredi:
- Fix regression in fileattr permission checking
- Fix possible hang during PID namespace destruction
- Add generic support for request extensions
- Add supplementary group list extension
- Add limited support for supplying supplementary groups in create
requests
- Documentation fixes
* tag 'fuse-update-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: add inode/permission checks to fileattr_get/fileattr_set
fuse: fix all W=1 kernel-doc warnings
fuse: in fuse_flush only wait if someone wants the return code
fuse: optional supplementary group in create requests
fuse: add request extension
- Extend slot-gpio to be used for host specific card detect interrupts
- Align to common busy polling behaviour for mmc ioctls
- Suggest the BFQ I/O scheduler to be built along with MMC/SD support
- Add devm_mmc_alloc_host() to enable further cleanups in host drivers
MMC host:
- atmel-mci: Fix race condition when stopping/starting a command
- dw_mmc-starfive: Add new driver to support the StarFive JH7110 variant
- dw_mmc-rockchip: Add support for the RK3588 variant
- jz4740: Add support for the vqmmc power supply
- meson-gx: Convert the DT bindings to the dt-schema
- meson-gx: Enable the platform interrupt to be used for card detect
- moxart: Set the supported maximum request/block/segment sizes
- renesas,sdhi: Add support for the RZ/V2M variants
- sdhci: Rework code to drop SDHCI_QUIRK_MISSING_CAPS
- sdhci-esdhc-imx: Improve tuning logic support
- sdhci-msm: Add support for the IPQ5332 and the IPQ9574 variants
- sdhci-of-dwcmshc: Add the missing device table IDs for acpi
- sdhci-of-dwcmshc: Improve clock support for the Rockchip variant
- sdhci-of-dwcmshc: Enable support of V4 host for the BlueField-3 variant
- sdhci-pxav2: Add support for the PXA168 V1 variant
- sdhci-pxav2: Add support for SDIO IRQs for the PXA168 V1 variant
- uniphier-sd: Add support for SD UHS-I speed modes
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Merge tag 'mmc-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Extend slot-gpio to be used for host specific card detect interrupts
- Align to common busy polling behaviour for mmc ioctls
- Suggest the BFQ I/O scheduler to be built along with MMC/SD support
- Add devm_mmc_alloc_host() to enable further cleanups in host drivers
MMC host:
- atmel-mci: Fix race condition when stopping/starting a command
- dw_mmc-starfive: Add new driver to support the StarFive JH7110 variant
- dw_mmc-rockchip: Add support for the RK3588 variant
- jz4740: Add support for the vqmmc power supply
- meson-gx: Convert the DT bindings to the dt-schema
- meson-gx: Enable the platform interrupt to be used for card detect
- moxart: Set the supported maximum request/block/segment sizes
- renesas,sdhi: Add support for the RZ/V2M variants
- sdhci: Rework code to drop SDHCI_QUIRK_MISSING_CAPS
- sdhci-esdhc-imx: Improve tuning logic support
- sdhci-msm: Add support for the IPQ5332 and the IPQ9574 variants
- sdhci-of-dwcmshc: Add the missing device table IDs for acpi
- sdhci-of-dwcmshc: Improve clock support for the Rockchip variant
- sdhci-of-dwcmshc: Enable support of V4 host for the BlueField-3 variant
- sdhci-pxav2: Add support for the PXA168 V1 variant
- sdhci-pxav2: Add support for SDIO IRQs for the PXA168 V1 variant
- uniphier-sd: Add support for SD UHS-I speed modes"
* tag 'mmc-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (59 commits)
mmc: meson-gx: Use devm_platform_get_and_ioremap_resource()
mmc: meson-gx: constify member data of struct meson_host
mmc: meson-gx: use devm_clk_get_enabled() for core clock
mmc: core: fix return value check in devm_mmc_alloc_host()
dt-bindings: mmc: meson-gx: fix interrupt binding
mmc: meson-gx: support platform interrupt as card detect interrupt
dt-bindings: mmc: meson-gx: support specifying cd interrupt
mmc: core: support setting card detect interrupt from drivers
mmc: starfive: Add sdio/emmc driver support
dt-bindings: mmc: Add StarFive MMC module
dt-bindings: mmc: sdhci-msm: Allow 1 icc path
dt-bindings: mmc: rockchip-dw-mshc: Add RK3588 compatible string
mmc: core: Align to common busy polling behaviour for mmc ioctls
dt-bindings: mmc: Add resets property to cadence SDHCI binding
mmc: meson-gx: remove meson_mmc_get_cd
mmc: moxart: set maximum request/block/segment sizes
mmc: sdhci-brcmstb: Use devm_platform_get_and_ioremap_resource()
mmc: sdhci-of-dwcmshc: add the missing device table IDs for acpi
mmc: sdhci-of-dwcmshc: Update DLL and pre-change delay for rockchip platform
mmc: jz4740: Add support for vqmmc power supply
...
- remove a not very useful and now unused swiotlb API
(Christoph Hellwig)
- fix a section mismatch (Randy Dunlap)
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Merge tag 'dma-mapping-6.3-2022-02-27' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- remove a not very useful and now unused swiotlb API (Christoph
Hellwig)
- fix a section mismatch (Randy Dunlap)
* tag 'dma-mapping-6.3-2022-02-27' of git://git.infradead.org/users/hch/dma-mapping:
swiotlb: mark swiotlb_memblock_alloc() as __init
swiotlb: remove swiotlb_max_segment
* fix off-by-one in the check whether memblock_add_range() should
reallocate memory to accommodate newly inserted range
* check only for relevant regions in memblock_merge_regions() rather than
swipe over the entire array
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Merge tag 'memblock-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock updates from Mike Rapoport:
"Small optimizations:
- fix off-by-one in the check whether memblock_add_range() should
reallocate memory to accommodate newly inserted range
- check only for relevant regions in memblock_merge_regions() rather
than swipe over the entire array"
* tag 'memblock-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
memblock: Avoid useless checks in memblock_merge_regions().
memblock: Make a boundary tighter in memblock_add_range().
Prior to the removal of xfs_ialloc_next_ag, we would increment the agi
rotor and return the *old* value. atomic_inc_return returns the new
value, which causes mkfs to allocate the root directory in AG 1. Put
back the old behavior (at least for mkfs) by subtracting 1 here.
Fixes: 20a5eab49d ("xfs: convert xfs_ialloc_next_ag() to an atomic")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Introduce a new ap queue status register wrapper union to access register
wide values. So the inline assembler only sees register wide values but the
surrounding code may use a more structured view of the same value and a
reader of the code (and the compiler) gets a clear understanding about the
mapping between fields and register values.
All the changes to access the ap queue status are local to the inline
functions within ap.h. However, the struct ap_qirq_ctrl has been replaces
by a union for same reason and this needed slight adaptions in the calling
code.
Suggested-by: Halil Pasic <pasic@linux.ibm.com>
Suggested-by: Andreas Arnez <arnez@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
When a machine check is received while in SIE, it is reinjected into the
guest in some cases. The respective code needs to access the sie_block,
which is taken from the backed up R14.
Since reinjection only occurs while we are in SIE (i.e. between the
labels sie_entry and sie_leave in entry.S and thus if CIF_MCCK_GUEST is
set), the backed up R14 will always contain a physical address in
s390_backup_mcck_info.
This currently works, because virtual and physical addresses are
the same.
Add phys_to_virt() to resolve the virtual-physical confusion.
Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Link: https://lore.kernel.org/r/20230216121208.4390-2-nrb@linux.ibm.com
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Currently there are several kernel command line parameters which are
only parsed and handled in decompressor and not known to the kernel.
This leads to the following error message during kernel boot:
Unknown kernel command line parameters "mem=3G nokaslr", will be passed
to user space.
To avoid confusion, register those parameters with an empty stub so that
kernel does not complain about them.
Reported-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
The log entries are stored in le32, so use appropriate byte swapping
macros.
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202302242222.PevBhzvC-lkp@intel.com/
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Thermal framework commit 3fd6d6e2b4 ("thermal/of: Rework the thermal
device tree initialization") merged in v6.1-rc1, exposed
misconfiguration of Exynos Thermal Monitoring Unit (TMU) thermal-sensors
property in DTS. This misconfiguration in DTS was working fine before
that Thermal commit, but now all thermal zones fail to register except
the first one (CPU). This can lead to missing cooling of a board and
eventually either emergency shutdown or damaged board.
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Merge tag 'samsung-dt-fixes-6.3' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/fixes
Fixes for Samsung DTS ARM for v6.3
Thermal framework commit 3fd6d6e2b4 ("thermal/of: Rework the thermal
device tree initialization") merged in v6.1-rc1, exposed
misconfiguration of Exynos Thermal Monitoring Unit (TMU) thermal-sensors
property in DTS. This misconfiguration in DTS was working fine before
that Thermal commit, but now all thermal zones fail to register except
the first one (CPU). This can lead to missing cooling of a board and
eventually either emergency shutdown or damaged board.
* tag 'samsung-dt-fixes-6.3' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: dts: exynos: correct TMU phandle in Odroid XU3 family
ARM: dts: exynos: correct TMU phandle in Odroid HC1
ARM: dts: exynos: correct TMU phandle in Odroid XU
ARM: dts: exynos: correct TMU phandle in Exynos5250
ARM: dts: exynos: correct TMU phandle in Exynos4210
ARM: dts: exynos: correct TMU phandle in Exynos4
Link: https://lore.kernel.org/r/20230221095337.9453-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
ARM64 systems are often memory constrained and more often than not
use slow single-channel storage such as flash memory or MMC/SD-cards.
For any interactive systems (such as mobile phones, tablets,
chromebooks...) the BFQ I/O scheduler will be desireable.
Make sure the BFQ I/O scheduler is available on these systems.
ARM (32), Loongarch, MIPS, m68k, UM and S390 has also enabled BFQ in
their defconfigs, cf commit b495dfed70
"um: Cleanup CONFIG_IOSCHED_CFQ" where the motivation is that
it replaces the former CFQ scheduler.
Cc: linux-arm-kernel@lists.infradead.org
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Paolo Valente <paolo.valente@linaro.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230224135230.2295826-1-linus.walleij@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
A recent update to support PCI endpoint mode on i.MX platforms
unintentionally disabled PCI host support for i.MX in defconfig. The
existing PCI_IMX6 was made a hidden option, selected by new options
PCI_IMX6_HOST (for the existing support) and PCI_IMX6_EP (for the
endpoint mode), but there has been no corresponding update to defconfig
so the PCI_IMX6 ends up getting disabled. Switch defconfig to
PCI_IMX6_HOST to preserve the existing functionality.
Fixes: 75c2f26da0 ("PCI: imx6: Add i.MX PCIe EP mode support")
Reported-by: "kernelci.org bot" <bot@kernelci.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com>
Link: https://lore.kernel.org/r/20230220-imx-pci-defconfig-v1-1-2210cf08340e@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
TCA_EXT_WARN_MSG is currently sitting outside of the expected hierarchy
for the tc actions code. It should sit within TCA_ACT_TAB.
Fixes: 0349b8779c ("sched: add new attr TCA_EXT_WARN_MSG to report tc extact message")
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sony PXW-Z280 camera add vendor allocation entries to directory of
pictures. Currently, linux exfat does not support it and the file is
not visible. This patch handle vendor extension and allocation entries
as unreconized benign secondary entries. As described in the specification,
it is recognized but ignored, and when deleting directory entry set,
the associated clusters allocation are removed as well as benign secondary
directory entries.
Reported-by: Barócsi Dénes <admin@tveger.hu>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Reviewed-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
inode->i_blocks is not real number of blocks, but 512 byte ones.
Fixes: 98d917047e ("exfat: add file operations")
Cc: stable@vger.kernel.org # v5.7+
Reported-by: Wang Yugui <wangyugui@e16-tech.com>
Tested-by: Wang Yugui <wangyugui@e16-tech.com>
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
When a file or a directory is deleted, the hint for the cluster of
its parent directory in its in-memory inode is set as DIR_DELETED.
Therefore, DIR_DELETED must be one of invalid cluster numbers. According
to the exFAT specification, a volume can have at most 2^32-11 clusters.
However, DIR_DELETED is wrongly defined as 0xFFFF0321, which could be
a valid cluster number. To fix it, let's redefine DIR_DELETED as
0xFFFFFFF7, the bad cluster number.
Fixes: 1acf1a564b ("exfat: add in-memory and on-disk structures and headers")
Cc: stable@vger.kernel.org # v5.7+
Reported-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Since seekdir() does not check whether the position is valid, the
position may exceed the size of the directory. We found that for
a directory with discontinuous clusters, if the position exceeds
the size of the directory and the excess size is greater than or
equal to the cluster size, exfat_readdir() will return -EIO,
causing a file system error and making the file system unavailable.
Reproduce this bug by:
seekdir(dir, dir_size + cluster_size);
dirent = readdir(dir);
The following log will be printed if mount with 'errors=remount-ro'.
[11166.712896] exFAT-fs (sdb1): error, invalid access to FAT (entry 0xffffffff)
[11166.712905] exFAT-fs (sdb1): Filesystem has been set read-only
Fixes: 1e5654de0f ("exfat: handle wrong stream entry size in exfat_readdir()")
Cc: stable@vger.kernel.org # v5.7+
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
If the position is not aligned with the dentry size, the return
value of readdir() will be NULL and errno is 0, which means the
end of the directory stream is reached.
If the position is aligned with dentry size, but there is no file
or directory at the position, exfat_readdir() will continue to
get dentry from the next dentry. So the dentry gotten by readdir()
may not be at the position.
After this commit, if the position is not aligned with the dentry
size, round the position up to the dentry size and continue to get
the dentry.
Fixes: ca06197382 ("exfat: add directory operations")
Cc: stable@vger.kernel.org # v5.7+
Reported-by: Wang Yugui <wangyugui@e16-tech.com>
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Thomas Weißschuh