1249971 Commits

Author SHA1 Message Date
Basavaraj Natikar
6296562f30 HID: amd_sfh: Extend MP2 register access to SFH
Various MP2 register sets are supported by newer processors. Therefore,
extend MP2 register access to SFH.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2024-02-27 15:13:55 +01:00
Basavaraj Natikar
2105e8e00d HID: amd_sfh: Improve boot time when SFH is available
AMD SFH load takes longer time in initialization. Hence split and defer
initialization code to improve SFH module load time and boot time of the
system when SFH is available.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2024-02-27 15:13:55 +01:00
Basavaraj Natikar
c1db007321 HID: amd_sfh: Avoid disabling the interrupt
HP ProBook x360 435 G7 using older version of firmware which doesn't
support disabling the interrupt for all commands. Hence avoid disabling
the interrupt for that particular model.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=218104
Fixes: b300667b33b2 ("HID: amd_sfh: Disable the interrupt for all command")
Co-developed-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2024-02-27 15:13:55 +01:00
Basavaraj Natikar
bbf0dec306 HID: amd_sfh: Update HPD sensor structure elements
HPD sensor data is not populating properly because of wrong order of HPD
sensor structure elements. So update the order of structure elements to
match the HPD sensor data received from the firmware.

Fixes: 24a31ea94922 ("HID: amd_sfh: Add initial support for HPD sensor")
Co-developed-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2024-02-27 15:13:55 +01:00
Basavaraj Natikar
333861f4cc HID: amd_sfh: Increase sensor command timeout
During the initialization sensors may take some time to respond. Hence,
increase the sensor command timeouts in order to obtain status responses
within a maximum timeout.

Co-developed-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2024-02-27 15:13:55 +01:00
Linus Torvalds
9207fe7572 hid-for-linus-2024021501
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Merge tag 'hid-for-linus-2024021501' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid

Pull HID fixes from Jiri Kosina:

 - fix for 'MSC_SERIAL = 0' corner case handling in wacom driver (Jason
   Gerecke)

 - ACPI S3 suspend/resume fix for intel-ish-hid (Even Xu)

 - race condition fix preventing Wacom driver from losing events shortly
   after initialization (Jason Gerecke)

 - fix preventing certain Logitech HID++ devices from spamming kernel
   log (Oleksandr Natalenko)

* tag 'hid-for-linus-2024021501' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  HID: wacom: generic: Avoid reporting a serial of '0' to userspace
  HID: Intel-ish-hid: Ishtp: Fix sensor reads after ACPI S3 suspend
  HID: multitouch: Add required quirk for Synaptics 0xcddc device
  HID: wacom: Do not register input devices until after hid_hw_start
  HID: logitech-hidpp: Do not flood kernel log
2024-02-15 09:08:19 -08:00
Linus Torvalds
8d3dea2100 - Fix for broken ipv6 checksums
- Fix handling of exceptions in delay slots
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Merge tag 'mips-fixes_6.8_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS fixes from Thomas Bogendoerfer:

 - Fix for broken ipv6 checksums

 - Fix handling of exceptions in delay slots

* tag 'mips-fixes_6.8_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  mm/memory: Use exception ip to search exception tables
  MIPS: Clear Cause.BD in instruction_pointer_set
  ptrace: Introduce exception_ip arch hook
  MIPS: Add 'memory' clobber to csum_ipv6_magic() inline assembler
2024-02-14 16:06:31 -08:00
Linus Torvalds
6004b044f7 Landlock fixes for v6.8-rc5
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Merge tag 'landlock-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux

Pull landlock test fixes from Mickaël Salaün:
 "Fix build issues for tests, and improve test compatibility"

* tag 'landlock-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
  selftests/landlock: Fix capability for net_test
  selftests/landlock: Fix fs_test build with old libc
  selftests/landlock: Fix net_test build with old libc
2024-02-14 16:02:36 -08:00
Linus Torvalds
1f3a3e2aae for-6.8-rc4-tag
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Merge tag 'for-6.8-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "A few regular fixes and one fix for space reservation regression since
  6.7 that users have been reporting:

   - fix over-reservation of metadata chunks due to not keeping proper
     balance between global block reserve and delayed refs reserve; in
     practice this leaves behind empty metadata block groups, the
     workaround is to reclaim them by using the '-musage=1' balance
     filter

   - other space reservation fixes:
      - do not delete unused block group if it may be used soon
      - do not reserve space for checksums for NOCOW files

   - fix extent map assertion failure when writing out free space inode

   - reject encoded write if inode has nodatasum flag set

   - fix chunk map leak when loading block group zone info"

* tag 'for-6.8-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: don't refill whole delayed refs block reserve when starting transaction
  btrfs: zoned: fix chunk map leak when loading block group zone info
  btrfs: reject encoded write if inode has nodatasum flag set
  btrfs: don't reserve space for checksums when writing to nocow files
  btrfs: add new unused block groups to the list of unused block groups
  btrfs: do not delete unused block group if it may be used soon
  btrfs: add and use helper to check if block group is used
  btrfs: don't drop extent_map for free space inode on write error
2024-02-14 15:47:02 -08:00
Linus Torvalds
91f842ffe6 linux_kselftest-kunit-fixes-6.8-rc5
This KUnit update for Linux 6.8-rc5 consists of one important fix
 to unregister kunit_bus when KUnit module is unloaded. Not doing
 so causes an error when KUnit module tries to re-register the bus
 when it gets reloaded.
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Merge tag 'linux_kselftest-kunit-fixes-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull KUnit fix from Shuah Khan:
 "One important fix to unregister kunit_bus when KUnit module is
  unloaded.

  Not doing so causes an error when KUnit module tries to re-register
  the bus when it gets reloaded"

* tag 'linux_kselftest-kunit-fixes-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: device: Unregister the kunit_bus on shutdown
2024-02-14 15:34:03 -08:00
Filipe Manana
2f6397e448 btrfs: don't refill whole delayed refs block reserve when starting transaction
Since commit 28270e25c69a ("btrfs: always reserve space for delayed refs
when starting transaction") we started not only to reserve metadata space
for the delayed refs a caller of btrfs_start_transaction() might generate
but also to try to fully refill the delayed refs block reserve, because
there are several case where we generate delayed refs and haven't reserved
space for them, relying on the global block reserve. Relying too much on
the global block reserve is not always safe, and can result in hitting
-ENOSPC during transaction commits or worst, in rare cases, being unable
to mount a filesystem that needs to do orphan cleanup or anything that
requires modifying the filesystem during mount, and has no more
unallocated space and the metadata space is nearly full. This was
explained in detail in that commit's change log.

However the gap between the reserved amount and the size of the delayed
refs block reserve can be huge, so attempting to reserve space for such
a gap can result in allocating many metadata block groups that end up
not being used. After a recent patch, with the subject:

  "btrfs: add new unused block groups to the list of unused block groups"

We started to add new block groups that are unused to the list of unused
block groups, to avoid having them around for a very long time in case
they are never used, because a block group is only added to the list of
unused block groups when we deallocate the last extent or when mounting
the filesystem and the block group has 0 bytes used. This is not a problem
introduced by the commit mentioned earlier, it always existed as our
metadata space reservations are, most of the time, pessimistic and end up
not using all the space they reserved, so we can occasionally end up with
one or two unused metadata block groups for a long period. However after
that commit mentioned earlier, we are just more pessimistic in the
metadata space reservations when starting a transaction and therefore the
issue is more likely to happen.

This however is not always enough because we might create unused metadata
block groups when reserving metadata space at a high rate if there's
always a gap in the delayed refs block reserve and the cleaner kthread
isn't triggered often enough or is busy with other work (running delayed
iputs, cleaning deleted roots, etc), not to mention the block group's
allocated space is only usable for a new block group after the transaction
used to remove it is committed.

A user reported that he's getting a lot of allocated metadata block groups
but the usage percentage of metadata space was very low compared to the
total allocated space, specially after running a series of block group
relocations.

So for now stop trying to refill the gap in the delayed refs block reserve
and reserve space only for the delayed refs we are expected to generate
when starting a transaction.

CC: stable@vger.kernel.org # 6.7+
Reported-by: Ivan Shapovalov <intelfx@intelfx.name>
Link: https://lore.kernel.org/linux-btrfs/9cdbf0ca9cdda1b4c84e15e548af7d7f9f926382.camel@intelfx.name/
Link: https://lore.kernel.org/linux-btrfs/CAL3q7H6802ayLHUJFztzZAVzBLJAGdFx=6FHNNy87+obZXXZpQ@mail.gmail.com/
Tested-by: Ivan Shapovalov <intelfx@intelfx.name>
Reported-by: Heddxh <g311571057@gmail.com>
Link: https://lore.kernel.org/linux-btrfs/CAE93xANEby6RezOD=zcofENYZOT-wpYygJyauyUAZkLv6XVFOA@mail.gmail.com/
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2024-02-13 18:39:09 +01:00
Filipe Manana
88e81a6777 btrfs: zoned: fix chunk map leak when loading block group zone info
At btrfs_load_block_group_zone_info() we never drop a reference on the
chunk map we have looked up, therefore leaking a reference on it. So
add the missing btrfs_free_chunk_map() at the end of the function.

Fixes: 7dc66abb5a47 ("btrfs: use a dedicated data structure for chunk maps")
Reported-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Tested-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2024-02-13 18:38:19 +01:00
Filipe Manana
1bd96c92c6 btrfs: reject encoded write if inode has nodatasum flag set
Currently we allow an encoded write against inodes that have the NODATASUM
flag set, either because they are NOCOW files or they were created while
the filesystem was mounted with "-o nodatasum". This results in having
compressed extents without corresponding checksums, which is a filesystem
inconsistency reported by 'btrfs check'.

For example, running btrfs/281 with MOUNT_OPTIONS="-o nodatacow" triggers
this and 'btrfs check' errors out with:

   [1/7] checking root items
   [2/7] checking extents
   [3/7] checking free space tree
   [4/7] checking fs roots
   root 256 inode 257 errors 1040, bad file extent, some csum missing
   root 256 inode 258 errors 1040, bad file extent, some csum missing
   ERROR: errors found in fs roots
   (...)

So reject encoded writes if the target inode has NODATASUM set.

CC: stable@vger.kernel.org # 6.1+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2024-02-13 18:38:05 +01:00
Filipe Manana
feefe1f49d btrfs: don't reserve space for checksums when writing to nocow files
Currently when doing a write to a file we always reserve metadata space
for inserting data checksums. However we don't need to do it if we have
a nodatacow file (-o nodatacow mount option or chattr +C) or if checksums
are disabled (-o nodatasum mount option), as in that case we are only
adding unnecessary pressure to metadata reservations.

For example on x86_64, with the default node size of 16K, a 4K buffered
write into a nodatacow file is reserving 655360 bytes of metadata space,
as it's accounting for checksums. After this change, which stops reserving
space for checksums if we have a nodatacow file or checksums are disabled,
we only need to reserve 393216 bytes of metadata.

CC: stable@vger.kernel.org # 6.1+
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2024-02-13 18:36:35 +01:00
Linus Torvalds
7e90b5c295 Tracing tooling updates for 6.8-rc4
RTLA:
         - rtla tools are exiting with a positive value when usage()
           is called. Make them return 0 if the usage was called via
           -h/--help.
 
         - the -P priority sets the sched priority for rtla workload.
           When the SCHED_OTHER scheduler is selected, it sets
           the rt_priority instead of the nice parameter. Setting
           the nice value is the correct thing, so fix it.
 
         - rtla is failing to compile with clang due to unsupported
           options from gcc. Adjusting the compiler/linker options
           makes clang work properly.
 
         - Remove the sched_getattr() unused function on utils.c.
 
         - Fixes on variable initialization and size, reported by
           clang.
 
 Verification:
         - rv is failing to compile with clang due to unsupported
           options from gcc. Adjusting the compiler/linker options
           makes clang work properly.
 
         - Fix an uninitialized variable on in_kernel.c reported by
           clang.
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Merge tag 'trace-tools-v6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing tooling fixes from Steven Rostedt:
 "RTLA:

   - rtla tools are exiting with a positive value when usage() is
     called. Make them return 0 if the usage was called via -h/--help

   - the -P priority sets the sched priority for rtla workload. When the
     SCHED_OTHER scheduler is selected, it sets the rt_priority instead
     of the nice parameter. Setting the nice value is the correct thing,
     so fix it

   - rtla is failing to compile with clang due to unsupported options
     from gcc. Adjusting the compiler/linker options makes clang work
     properly

   - Remove the sched_getattr() unused function on utils.c

   - Fixes for variable initialization and size, reported by clang

  Verification:

   - rv is failing to compile with clang due to unsupported options from
     gcc. Adjusting the compiler/linker options makes clang work
     properly

   - Fix an uninitialized variable on in_kernel.c reported by clang"

* tag 'trace-tools-v6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tools/rtla: Exit with EXIT_SUCCESS when help is invoked
  tools/rtla: Replace setting prio with nice for SCHED_OTHER
  tools/rv: Fix curr_reactor uninitialized variable
  tools/rv: Fix Makefile compiler options for clang
  tools/rtla: Remove unused sched_getattr() function
  tools/rtla: Fix clang warning about mount_point var size
  tools/rtla: Fix uninitialized bucket/data->bucket_size warning
  tools/rtla: Fix Makefile compiler options for clang
2024-02-13 08:38:57 -08:00
Tatsunosuke Tobita
ab41a31dd5 HID: wacom: generic: Avoid reporting a serial of '0' to userspace
The xf86-input-wacom driver does not treat '0' as a valid serial
number and will drop any input report which contains an
MSC_SERIAL = 0 event. The kernel driver already takes care to
avoid sending any MSC_SERIAL event if the value of serial[0] == 0
(which is the case for devices that don't actually report a
serial number), but this is not quite sufficient.
Only the lower 32 bits of the serial get reported to userspace,
so if this portion of the serial is zero then there can still
be problems.

This commit allows the driver to report either the lower 32 bits
if they are non-zero or the upper 32 bits otherwise.

Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Tatsunosuke Tobita <tatsunosuke.tobita@wacom.com>
Fixes: f85c9dc678a5 ("HID: wacom: generic: Support tool ID and additional tool types")
CC: stable@vger.kernel.org # v4.10
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2024-02-13 11:40:23 +01:00
Even Xu
bdab6c94bb HID: Intel-ish-hid: Ishtp: Fix sensor reads after ACPI S3 suspend
After legacy suspend/resume via ACPI S3, sensor read operation fails
with timeout. Also, it will cause delay in resume operation as there
will be retries on failure.

This is caused by commit f645a90e8ff7 ("HID: intel-ish-hid:
ishtp-hid-client: use helper functions for connection"), which used
helper functions to simplify connect, reset and disconnect process.
Also avoid freeing and allocating client buffers again during reconnect
process.

But there is a case, when ISH firmware resets after ACPI S3 suspend,
ishtp bus driver frees client buffers. Since there is no realloc again
during reconnect, there are no client buffers available to send connection
requests to the firmware. Without successful connection to the firmware,
subsequent sensor reads will timeout.

To address this issue, ishtp bus driver does not free client buffers on
warm reset after S3 resume. Simply add the buffers from the read list
to free list of buffers.

Fixes: f645a90e8ff7 ("HID: intel-ish-hid: ishtp-hid-client: use helper functions for connection")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218442
Signed-off-by: Even Xu <even.xu@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2024-02-13 11:31:08 +01:00
Manuel Fombuena
1741a8269e HID: multitouch: Add required quirk for Synaptics 0xcddc device
Add support for the pointing stick (Accupoint) and 2 mouse buttons.

Present on some Toshiba/dynabook Portege X30 and X40 laptops.

It should close https://bugzilla.kernel.org/show_bug.cgi?id=205817

Signed-off-by: Manuel Fombuena <fombuena@outlook.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2024-02-13 11:28:29 +01:00
Linus Torvalds
c664e16bb1 A single fix to the kernel_feat extension for a bug that will crash
the docs build in some situations.
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Merge tag 'docs-6.8-fixes2' of git://git.lwn.net/linux

Pull documentation fix from Jonathan Corbet:
 "A single fix to the kernel_feat extension for a bug that will crash
  the docs build in some situations"

* tag 'docs-6.8-fixes2' of git://git.lwn.net/linux:
  docs: kernel_feat.py: fix build error for missing files
2024-02-12 14:11:30 -08:00
Jiaxun Yang
8fa5070833 mm/memory: Use exception ip to search exception tables
On architectures with delay slot, instruction_pointer() may differ
from where exception was triggered.

Use exception_ip we just introduced to search exception tables to
get rid of the problem.

Fixes: 4bce37a68ff8 ("mips/mm: Convert to using lock_mm_and_find_vma()")
Reported-by: Xi Ruoyao <xry111@xry111.site>
Link: https://lore.kernel.org/r/75e9fd7b08562ad9b456a5bdaacb7cc220311cc9.camel@xry111.site/
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2024-02-12 23:04:42 +01:00
Jiaxun Yang
9d6e21ddf2 MIPS: Clear Cause.BD in instruction_pointer_set
Clear Cause.BD after we use instruction_pointer_set to override
EPC.

This can prevent exception_epc check against instruction code at
new return address.
It won't be considered as "in delay slot" after epc being overridden
anyway.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2024-02-12 23:04:40 +01:00
Jiaxun Yang
11ba1728be ptrace: Introduce exception_ip arch hook
On architectures with delay slot, architecture level instruction
pointer (or program counter) in pt_regs may differ from where
exception was triggered.

Introduce exception_ip hook to invoke architecture code and determine
actual instruction pointer to the exception.

Link: https://lore.kernel.org/lkml/00d1b813-c55f-4365-8d81-d70258e10b16@app.fastmail.com/
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2024-02-12 23:04:34 +01:00
Guenter Roeck
d55347bfe4 MIPS: Add 'memory' clobber to csum_ipv6_magic() inline assembler
After 'lib: checksum: Use aligned accesses for ip_fast_csum and
csum_ipv6_magic tests' was applied, the test_csum_ipv6_magic unit test
started failing for all mips platforms, both little and bit endian.
Oddly enough, adding debug code into test_csum_ipv6_magic() made the
problem disappear.

The gcc manual says:

"The "memory" clobber tells the compiler that the assembly code performs
 memory reads or writes to items other than those listed in the input
 and output operands (for example, accessing the memory pointed to by one
 of the input parameters)
"

This is definitely the case for csum_ipv6_magic(). Indeed, adding the
'memory' clobber fixes the problem.

Cc: Charlie Jenkins <charlie@rivosinc.com>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2024-02-12 23:03:19 +01:00
Linus Torvalds
716f4aaa7b vfs-6.8-rc5.fixes
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Merge tag 'vfs-6.8-rc5.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs fixes from Christian Brauner:

 - Fix performance regression introduced by moving the security
   permission hook out of do_clone_file_range() and into its caller
   vfs_clone_file_range().

   This causes the security hook to be called in situation were it
   wasn't called before as the fast permission checks were left in
   do_clone_file_range().

   Fix this by merging the two implementations back together and
   restoring the old ordering: fast permission checks first, expensive
   ones later.

 - Tweak mount_setattr() permission checking so that mount properties on
   the real rootfs can be changed.

   When we added mount_setattr() we added additional checks compared to
   legacy mount(2). If the mount had a parent then verify that the
   caller and the mount namespace the mount is attached to match and if
   not make sure that it's an anonymous mount.

   But the real rootfs falls into neither category. It is neither an
   anoymous mount because it is obviously attached to the initial mount
   namespace but it also obviously doesn't have a parent mount. So that
   means legacy mount(2) allows changing mount properties on the real
   rootfs but mount_setattr(2) blocks this. This causes regressions (See
   the commit for details).

   Fix this by relaxing the check. If the mount has a parent or if it
   isn't a detached mount, verify that the mount namespaces of the
   caller and the mount are the same. Technically, we could probably
   write this even simpler and check that the mount namespaces match if
   it isn't a detached mount. But the slightly longer check makes it
   clearer what conditions one needs to think about.

* tag 'vfs-6.8-rc5.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  fs: relax mount_setattr() permission checks
  remap_range: merge do_clone_file_range() into vfs_clone_file_range()
2024-02-12 07:15:45 -08:00
John Kacur
b5f3193603 tools/rtla: Exit with EXIT_SUCCESS when help is invoked
Fix rtla so that the following commands exit with 0 when help is invoked

rtla osnoise top -h
rtla osnoise hist -h
rtla timerlat top -h
rtla timerlat hist -h

Link: https://lore.kernel.org/linux-trace-devel/20240203001607.69703-1-jkacur@redhat.com

Cc: stable@vger.kernel.org
Fixes: 1eeb6328e8b3 ("rtla/timerlat: Add timerlat hist mode")
Signed-off-by: John Kacur <jkacur@redhat.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
2024-02-12 10:59:09 +01:00
limingming3
14f08c976f tools/rtla: Replace setting prio with nice for SCHED_OTHER
Since the sched_priority for SCHED_OTHER is always 0, it makes no
sence to set it.
Setting nice for SCHED_OTHER seems more meaningful.

Link: https://lkml.kernel.org/r/20240207065142.1753909-1-limingming3@lixiang.com

Cc: stable@vger.kernel.org
Fixes: b1696371d865 ("rtla: Helper functions for rtla")
Signed-off-by: limingming3 <limingming3@lixiang.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
2024-02-12 10:56:36 +01:00
Daniel Bristot de Oliveira
61ec586bc0 tools/rv: Fix curr_reactor uninitialized variable
clang is reporting:

$ make HOSTCC=clang CC=clang LLVM_IAS=1

clang -O -g -DVERSION=\"6.8.0-rc3\" -flto=auto -fexceptions
	-fstack-protector-strong -fasynchronous-unwind-tables
	-fstack-clash-protection  -Wall -Werror=format-security
	-Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS
	$(pkg-config --cflags libtracefs)  -I include
	-c -o src/in_kernel.o src/in_kernel.c
[...]

src/in_kernel.c:227:6: warning: variable 'curr_reactor' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
  227 |         if (!end)
      |             ^~~~
src/in_kernel.c:242:9: note: uninitialized use occurs here
  242 |         return curr_reactor;
      |                ^~~~~~~~~~~~
src/in_kernel.c:227:2: note: remove the 'if' if its condition is always false
  227 |         if (!end)
      |         ^~~~~~~~~
  228 |                 goto out_free;
      |                 ~~~~~~~~~~~~~
src/in_kernel.c:221:6: warning: variable 'curr_reactor' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
  221 |         if (!start)
      |             ^~~~~~
src/in_kernel.c:242:9: note: uninitialized use occurs here
  242 |         return curr_reactor;
      |                ^~~~~~~~~~~~
src/in_kernel.c:221:2: note: remove the 'if' if its condition is always false
  221 |         if (!start)
      |         ^~~~~~~~~~~
  222 |                 goto out_free;
      |                 ~~~~~~~~~~~~~
src/in_kernel.c:215:20: note: initialize the variable 'curr_reactor' to silence this warning
  215 |         char *curr_reactor;
      |                           ^
      |                            = NULL
2 warnings generated.

Which is correct. Setting curr_reactor to NULL avoids the problem.

Link: https://lkml.kernel.org/r/3a35551149e5ee0cb0950035afcb8082c3b5d05b.1707217097.git.bristot@kernel.org

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Donald Zickus <dzickus@redhat.com>
Fixes: 6d60f89691fc ("tools/rv: Add in-kernel monitor interface")
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
2024-02-12 09:58:36 +01:00
Daniel Bristot de Oliveira
f9b2c87105 tools/rv: Fix Makefile compiler options for clang
The following errors are showing up when compiling rv with clang:

 $ make HOSTCC=clang CC=clang LLVM_IAS=1
 [...]
  clang -O -g -DVERSION=\"6.8.0-rc1\" -flto=auto -ffat-lto-objects
  -fexceptions -fstack-protector-strong -fasynchronous-unwind-tables
  -fstack-clash-protection  -Wall -Werror=format-security
  -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS
  -Wno-maybe-uninitialized $(pkg-config --cflags libtracefs)
  -I include   -c -o src/utils.o src/utils.c
  clang: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
  warning: unknown warning option '-Wno-maybe-uninitialized'; did you mean '-Wno-uninitialized'? [-Wunknown-warning-option]
  1 warning generated.

  clang -o rv -ggdb  src/in_kernel.o src/rv.o src/trace.o src/utils.o $(pkg-config --libs libtracefs)
  src/in_kernel.o: file not recognized: file format not recognized
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  make: *** [Makefile:110: rv] Error 1

Solve these issues by:
  - removing -ffat-lto-objects and -Wno-maybe-uninitialized if using clang
  - informing the linker about -flto=auto

Link: https://lkml.kernel.org/r/ed94a8ddc2ca8c8ef663cfb7ae9dd196c4a66b33.1707217097.git.bristot@kernel.org

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Fixes: 4bc4b131d44c ("rv: Add rv tool")
Suggested-by: Donald Zickus <dzickus@redhat.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
2024-02-12 09:58:08 +01:00
Daniel Bristot de Oliveira
084ce16df0 tools/rtla: Remove unused sched_getattr() function
Clang is reporting:

$ make HOSTCC=clang CC=clang LLVM_IAS=1
[...]
clang -O -g -DVERSION=\"6.8.0-rc3\" -flto=auto -fexceptions -fstack-protector-strong -fasynchronous-unwind-tables -fstack-clash-protection  -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS $(pkg-config --cflags libtracefs)    -c -o src/utils.o src/utils.c
src/utils.c:241:19: warning: unused function 'sched_getattr' [-Wunused-function]
  241 | static inline int sched_getattr(pid_t pid, struct sched_attr *attr,
      |                   ^~~~~~~~~~~~~
1 warning generated.

Which is correct, so remove the unused function.

Link: https://lkml.kernel.org/r/eaed7ba122c4ae88ce71277c824ef41cbf789385.1707217097.git.bristot@kernel.org

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Donald Zickus <dzickus@redhat.com>
Fixes: b1696371d865 ("rtla: Helper functions for rtla")
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
2024-02-12 09:57:37 +01:00
Daniel Bristot de Oliveira
30369084ac tools/rtla: Fix clang warning about mount_point var size
clang is reporting this warning:

$ make HOSTCC=clang CC=clang LLVM_IAS=1
[...]
clang -O -g -DVERSION=\"6.8.0-rc3\" -flto=auto -fexceptions
	-fstack-protector-strong -fasynchronous-unwind-tables
	-fstack-clash-protection  -Wall -Werror=format-security
	-Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS
	$(pkg-config --cflags libtracefs)    -c -o src/utils.o src/utils.c

src/utils.c:548:66: warning: 'fscanf' may overflow; destination buffer in argument 3 has size 1024, but the corresponding specifier may require size 1025 [-Wfortify-source]
  548 |         while (fscanf(fp, "%*s %" STR(MAX_PATH) "s %99s %*s %*d %*d\n", mount_point, type) == 2) {
      |                                                                         ^

Increase mount_point variable size to MAX_PATH+1 to avoid the overflow.

Link: https://lkml.kernel.org/r/1b46712e93a2f4153909514a36016959dcc4021c.1707217097.git.bristot@kernel.org

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Donald Zickus <dzickus@redhat.com>
Fixes: a957cbc02531 ("rtla: Add -C cgroup support")
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
2024-02-12 09:57:14 +01:00
Daniel Bristot de Oliveira
64dc40f752 tools/rtla: Fix uninitialized bucket/data->bucket_size warning
When compiling rtla with clang, I am getting the following warnings:

$ make HOSTCC=clang CC=clang LLVM_IAS=1

[..]
clang -O -g -DVERSION=\"6.8.0-rc3\" -flto=auto -fexceptions
	-fstack-protector-strong -fasynchronous-unwind-tables
	-fstack-clash-protection  -Wall -Werror=format-security
	-Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS
	$(pkg-config --cflags libtracefs)
	-c -o src/osnoise_hist.o src/osnoise_hist.c
src/osnoise_hist.c:138:6: warning: variable 'bucket' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
  138 |         if (data->bucket_size)
      |             ^~~~~~~~~~~~~~~~~
src/osnoise_hist.c:149:6: note: uninitialized use occurs here
  149 |         if (bucket < entries)
      |             ^~~~~~
src/osnoise_hist.c:138:2: note: remove the 'if' if its condition is always true
  138 |         if (data->bucket_size)
      |         ^~~~~~~~~~~~~~~~~~~~~~
  139 |                 bucket = duration / data->bucket_size;
src/osnoise_hist.c:132:12: note: initialize the variable 'bucket' to silence this warning
  132 |         int bucket;
      |                   ^
      |                    = 0
1 warning generated.

[...]

clang -O -g -DVERSION=\"6.8.0-rc3\" -flto=auto -fexceptions
	-fstack-protector-strong -fasynchronous-unwind-tables
	-fstack-clash-protection  -Wall -Werror=format-security
	-Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS
	$(pkg-config --cflags libtracefs)
	-c -o src/timerlat_hist.o src/timerlat_hist.c
src/timerlat_hist.c:181:6: warning: variable 'bucket' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
  181 |         if (data->bucket_size)
      |             ^~~~~~~~~~~~~~~~~
src/timerlat_hist.c:204:6: note: uninitialized use occurs here
  204 |         if (bucket < entries)
      |             ^~~~~~
src/timerlat_hist.c:181:2: note: remove the 'if' if its condition is always true
  181 |         if (data->bucket_size)
      |         ^~~~~~~~~~~~~~~~~~~~~~
  182 |                 bucket = latency / data->bucket_size;
src/timerlat_hist.c:175:12: note: initialize the variable 'bucket' to silence this warning
  175 |         int bucket;
      |                   ^
      |                    = 0
1 warning generated.

This is a legit warning, but data->bucket_size is always > 0 (see
timerlat_hist_parse_args()), so the if is not necessary.

Remove the unneeded if (data->bucket_size) to avoid the warning.

Link: https://lkml.kernel.org/r/6e1b1665cd99042ae705b3e0fc410858c4c42346.1707217097.git.bristot@kernel.org

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Donald Zickus <dzickus@redhat.com>
Fixes: 1eeb6328e8b3 ("rtla/timerlat: Add timerlat hist mode")
Fixes: 829a6c0b5698 ("rtla/osnoise: Add the hist mode")
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
2024-02-12 09:56:22 +01:00
Daniel Bristot de Oliveira
bc4cbc9d26 tools/rtla: Fix Makefile compiler options for clang
The following errors are showing up when compiling rtla with clang:

 $ make HOSTCC=clang CC=clang LLVM_IAS=1
 [...]

  clang -O -g -DVERSION=\"6.8.0-rc1\" -flto=auto -ffat-lto-objects
	-fexceptions -fstack-protector-strong
	-fasynchronous-unwind-tables -fstack-clash-protection  -Wall
	-Werror=format-security -Wp,-D_FORTIFY_SOURCE=2
	-Wp,-D_GLIBCXX_ASSERTIONS -Wno-maybe-uninitialized
	$(pkg-config --cflags libtracefs)    -c -o src/utils.o src/utils.c

  clang: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
  warning: unknown warning option '-Wno-maybe-uninitialized'; did you mean '-Wno-uninitialized'? [-Wunknown-warning-option]
  1 warning generated.

  clang -o rtla -ggdb  src/osnoise.o src/osnoise_hist.o src/osnoise_top.o
  src/rtla.o src/timerlat_aa.o src/timerlat.o src/timerlat_hist.o
  src/timerlat_top.o src/timerlat_u.o src/trace.o src/utils.o $(pkg-config --libs libtracefs)

  src/osnoise.o: file not recognized: file format not recognized
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  make: *** [Makefile:110: rtla] Error 1

Solve these issues by:
  - removing -ffat-lto-objects and -Wno-maybe-uninitialized if using clang
  - informing the linker about -flto=auto

Link: https://lore.kernel.org/linux-trace-kernel/567ac1b94effc228ce9a0225b9df7232a9b35b55.1707217097.git.bristot@kernel.org

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Fixes: 1a7b22ab15eb ("tools/rtla: Build with EXTRA_{C,LD}FLAGS")
Suggested-by: Donald Zickus <dzickus@redhat.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
2024-02-12 09:49:13 +01:00
Linus Torvalds
841c351693 Linux 6.8-rc4 v6.8-rc4 2024-02-11 12:18:13 -08:00
Linus Torvalds
2766f59ca4 - Make sure a warning is issued when a hrtimer gets queued after the
timers have been migrated on the CPU down path and thus said timer
   will get ignored
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Merge tag 'timers_urgent_for_v6.8_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Borislav Petkov:

 - Make sure a warning is issued when a hrtimer gets queued after the
   timers have been migrated on the CPU down path and thus said timer
   will get ignored

* tag 'timers_urgent_for_v6.8_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  hrtimer: Report offline hrtimer enqueue
2024-02-11 11:44:14 -08:00
Linus Torvalds
c021e191cf - Correct the minimum CPU family for Transmeta Crusoe in Kconfig so that
such hw can boot again
 
 - Do not take into accout XSTATE buffer size info supplied by userspace
   when constructing a sigreturn frame
 
 - Switch get_/put_user* to EX_TYPE_UACCESS exception handling when an
   MCE is encountered so that it can be properly recovered from instead
   of simply panicking
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Merge tag 'x86_urgent_for_v6.8_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Correct the minimum CPU family for Transmeta Crusoe in Kconfig so
   that such hw can boot again

 - Do not take into accout XSTATE buffer size info supplied by userspace
   when constructing a sigreturn frame

 - Switch get_/put_user* to EX_TYPE_UACCESS exception handling when an
   MCE is encountered so that it can be properly recovered from instead
   of simply panicking

* tag 'x86_urgent_for_v6.8_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/Kconfig: Transmeta Crusoe is CPU family 5, not 6
  x86/fpu: Stop relying on userspace for info to fault in xsave buffer
  x86/lib: Revert to _ASM_EXTABLE_UA() for {get,put}_user() fixups
2024-02-11 11:41:51 -08:00
Linus Torvalds
7521f258ea 21 hotfixes. 12 are cc:stable and the remainder pertain to post-6.7
issues or aren't considered to be needed in earlier kernel versions.
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Merge tag 'mm-hotfixes-stable-2024-02-10-11-16' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "21 hotfixes. 12 are cc:stable and the remainder pertain to post-6.7
  issues or aren't considered to be needed in earlier kernel versions"

* tag 'mm-hotfixes-stable-2024-02-10-11-16' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (21 commits)
  nilfs2: fix potential bug in end_buffer_async_write
  mm/damon/sysfs-schemes: fix wrong DAMOS tried regions update timeout setup
  nilfs2: fix hang in nilfs_lookup_dirty_data_buffers()
  MAINTAINERS: Leo Yan has moved
  mm/zswap: don't return LRU_SKIP if we have dropped lru lock
  fs,hugetlb: fix NULL pointer dereference in hugetlbs_fill_super
  mailmap: switch email address for John Moon
  mm: zswap: fix objcg use-after-free in entry destruction
  mm/madvise: don't forget to leave lazy MMU mode in madvise_cold_or_pageout_pte_range()
  arch/arm/mm: fix major fault accounting when retrying under per-VMA lock
  selftests: core: include linux/close_range.h for CLOSE_RANGE_* macros
  mm/memory-failure: fix crash in split_huge_page_to_list from soft_offline_page
  mm: memcg: optimize parent iteration in memcg_rstat_updated()
  nilfs2: fix data corruption in dsync block recovery for small block sizes
  mm/userfaultfd: UFFDIO_MOVE implementation should use ptep_get()
  exit: wait_task_zombie: kill the no longer necessary spin_lock_irq(siglock)
  fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
  fs/proc: do_task_stat: move thread_group_cputime_adjusted() outside of lock_task_sighand()
  getrusage: use sig->stats_lock rather than lock_task_sighand()
  getrusage: move thread_group_cputime_adjusted() outside of lock_task_sighand()
  ...
2024-02-10 15:28:07 -08:00
Linus Torvalds
a5b6244cf8 block-6.8-2024-02-10
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Merge tag 'block-6.8-2024-02-10' of git://git.kernel.dk/linux

Pull block fixes from Jens Axboe:

 - NVMe pull request via Keith:
     - Update a potentially stale firmware attribute (Maurizio)
     - Fixes for the recent verbose error logging (Keith, Chaitanya)
     - Protection information payload size fix for passthrough (Francis)

 - Fix for a queue freezing issue in virtblk (Yi)

 - blk-iocost underflow fix (Tejun)

 - blk-wbt task detection fix (Jan)

* tag 'block-6.8-2024-02-10' of git://git.kernel.dk/linux:
  virtio-blk: Ensure no requests in virtqueues before deleting vqs.
  blk-iocost: Fix an UBSAN shift-out-of-bounds warning
  nvme: use ns->head->pi_size instead of t10_pi_tuple structure size
  nvme-core: fix comment to reflect right functions
  nvme: move passthrough logging attribute to head
  blk-wbt: Fix detection of dirty-throttled tasks
  nvme-host: fix the updating of the firmware version
2024-02-10 08:02:48 -08:00
Linus Torvalds
a38ff5bbf9 firewire-fixes-6.8-rc4
This pull request includes the change to accelerate the device detection
 step in some cases.
 
 In the self-identification step after bus-reset, all of nodes in the same
 bus broadcast selfID packet including the value of gap count. The value is
 related to the cable hops between nodes, and used to calculate the
 subaction gap and the arbitration reset gap. When each node has the
 different value of the gap count, the asynchronous communication between
 them is unreliable, since an asynchronous transaction could be interrupted
 by another asynchronous transaction before completion. The gap count
 inconsistency can be resolved by several ways; e.g. the transfer of PHY
 configuration packet and generation of bus-reset.
 
 Current implementation of firewire stack can correctly detect the gap
 count inconsistency, however the recovery action from the inconsistency
 tends to be delayed after reading configuration ROM of root node. This
 results in the long time to probe devices in some combinations of
 hardware. In the pull request, the stack is changed to schedule the
 action immediately as possible.
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Merge tag 'firewire-fixes-6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394

Pull firewire fix from Takashi Sakamoto:
 "A change to accelerate the device detection step in some cases.

  In the self-identification step after bus-reset, all nodes in the same
  bus broadcast selfID packet including the value of gap count. The
  value is related to the cable hops between nodes, and used to
  calculate the subaction gap and the arbitration reset gap.

  When each node has the different value of the gap count, the
  asynchronous communication between them is unreliable, since an
  asynchronous transaction could be interrupted by another asynchronous
  transaction before completion. The gap count inconsistency can be
  resolved by several ways; e.g. the transfer of PHY configuration
  packet and generation of bus-reset.

  The current implementation of firewire stack can correctly detect the
  gap count inconsistency, however the recovery action from the
  inconsistency tends to be delayed after reading configuration ROM of
  root node. This results in the long time to probe devices in some
  combinations of hardware.

  Here the stack is changed to schedule the action as soon as possible"

* tag 'firewire-fixes-6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
  firewire: core: send bus reset promptly on gap count error
2024-02-10 07:56:39 -08:00
Linus Torvalds
5a7ec87063 Two ksmbd server fixes
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Merge tag '6.8-rc3-ksmbd-server-fixes' of git://git.samba.org/ksmbd

Pull smb server fixes from Steve French:
 "Two ksmbd server fixes:

   - memory leak fix

   - a minor kernel-doc fix"

* tag '6.8-rc3-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: free aux buffer if ksmbd_iov_pin_rsp_read fails
  ksmbd: Add kernel-doc for ksmbd_extract_sharename() function
2024-02-10 07:53:41 -08:00
Linus Torvalds
4a7bbe7519 SCSI fixes on 20240209
4 small fixes, 3 in drivers with the remaining core fix being a fixup
 to the one in the last pull request which didn't entirely move
 checking of scsi_host_busy() out from under the host lock.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Three small driver fixes and one core fix.

  The core fix being a fixup to the one in the last pull request which
  didn't entirely move checking of scsi_host_busy() out from under the
  host lock"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: ufs: core: Remove the ufshcd_release() in ufshcd_err_handling_prepare()
  scsi: ufs: core: Fix shift issue in ufshcd_clear_cmd()
  scsi: lpfc: Use unsigned type for num_sge
  scsi: core: Move scsi_host_busy() out of host lock if it is for per-command
2024-02-09 17:15:26 -08:00
Linus Torvalds
ca00c700c5 Five smb3 client fixes
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Merge tag '6.8-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - reconnect fix

 - multichannel channel selection fix

 - minor mount warning fix

 - reparse point fix

 - null pointer check improvement

* tag '6.8-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  smb3: clarify mount warning
  cifs: handle cases where multiple sessions share connection
  cifs: change tcon status when need_reconnect is set on it
  smb: client: set correct d_type for reparse points under DFS mounts
  smb3: add missing null server pointer check
2024-02-09 17:09:30 -08:00
Linus Torvalds
e1e3f530a1 Some fscrypt-related fixups (sparse reads are used only for encrypted
files) and two cap handling fixes from Xiubo and Rishabh.
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Merge tag 'ceph-for-6.8-rc4' of https://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "Some fscrypt-related fixups (sparse reads are used only for encrypted
  files) and two cap handling fixes from Xiubo and Rishabh"

* tag 'ceph-for-6.8-rc4' of https://github.com/ceph/ceph-client:
  ceph: always check dir caps asynchronously
  ceph: prevent use-after-free in encode_cap_msg()
  ceph: always set initial i_blkbits to CEPH_FSCRYPT_BLOCK_SHIFT
  libceph: just wait for more data to be available on the socket
  libceph: rename read_sparse_msg_*() to read_partial_sparse_msg_*()
  libceph: fail sparse-read if the data length doesn't match
2024-02-09 17:05:02 -08:00
Linus Torvalds
a2343df3fb driver ntfs3 for linux 6.8
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Merge tag 'ntfs3_for_6.8' of https://github.com/Paragon-Software-Group/linux-ntfs3

Pull ntfs3 fixes from Konstantin Komarov:
 "Fixed:
   - size update for compressed file
   - some logic errors, overflows
   - memory leak
   - some code was refactored

  Added:
   - implement super_operations::shutdown

  Improved:
   - alternative boot processing
   - reduced stack usage"

* tag 'ntfs3_for_6.8' of https://github.com/Paragon-Software-Group/linux-ntfs3: (28 commits)
  fs/ntfs3: Slightly simplify ntfs_inode_printk()
  fs/ntfs3: Add ioctl operation for directories (FITRIM)
  fs/ntfs3: Fix oob in ntfs_listxattr
  fs/ntfs3: Fix an NULL dereference bug
  fs/ntfs3: Update inode->i_size after success write into compressed file
  fs/ntfs3: Fixed overflow check in mi_enum_attr()
  fs/ntfs3: Correct function is_rst_area_valid
  fs/ntfs3: Use i_size_read and i_size_write
  fs/ntfs3: Prevent generic message "attempt to access beyond end of device"
  fs/ntfs3: use non-movable memory for ntfs3 MFT buffer cache
  fs/ntfs3: Use kvfree to free memory allocated by kvmalloc
  fs/ntfs3: Disable ATTR_LIST_ENTRY size check
  fs/ntfs3: Fix c/mtime typo
  fs/ntfs3: Add NULL ptr dereference checking at the end of attr_allocate_frame()
  fs/ntfs3: Add and fix comments
  fs/ntfs3: ntfs3_forced_shutdown use int instead of bool
  fs/ntfs3: Implement super_operations::shutdown
  fs/ntfs3: Drop suid and sgid bits as a part of fpunch
  fs/ntfs3: Add file_modified
  fs/ntfs3: Correct use bh_read
  ...
2024-02-09 16:59:49 -08:00
Linus Torvalds
4356e9f841 work around gcc bugs with 'asm goto' with outputs
We've had issues with gcc and 'asm goto' before, and we created a
'asm_volatile_goto()' macro for that in the past: see commits
3f0116c3238a ("compiler/gcc4: Add quirk for 'asm goto' miscompilation
bug") and a9f180345f53 ("compiler/gcc4: Make quirk for
asm_volatile_goto() unconditional").

Then, much later, we ended up removing the workaround in commit
43c249ea0b1e ("compiler-gcc.h: remove ancient workaround for gcc PR
58670") because we no longer supported building the kernel with the
affected gcc versions, but we left the macro uses around.

Now, Sean Christopherson reports a new version of a very similar
problem, which is fixed by re-applying that ancient workaround.  But the
problem in question is limited to only the 'asm goto with outputs'
cases, so instead of re-introducing the old workaround as-is, let's
rename and limit the workaround to just that much less common case.

It looks like there are at least two separate issues that all hit in
this area:

 (a) some versions of gcc don't mark the asm goto as 'volatile' when it
     has outputs:

        https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98619
        https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110420

     which is easy to work around by just adding the 'volatile' by hand.

 (b) Internal compiler errors:

        https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110422

     which are worked around by adding the extra empty 'asm' as a
     barrier, as in the original workaround.

but the problem Sean sees may be a third thing since it involves bad
code generation (not an ICE) even with the manually added 'volatile'.

but the same old workaround works for this case, even if this feels a
bit like voodoo programming and may only be hiding the issue.

Reported-and-tested-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/all/20240208220604.140859-1-seanjc@google.com/
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Uros Bizjak <ubizjak@gmail.com>
Cc: Jakub Jelinek <jakub@redhat.com>
Cc: Andrew Pinski <quic_apinski@quicinc.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-02-09 15:57:48 -08:00
Steve French
a5cc98eba2 smb3: clarify mount warning
When a user tries to use the "sec=krb5p" mount parameter to encrypt
data on connection to a server (when authenticating with Kerberos), we
indicate that it is not supported, but do not note the equivalent
recommended mount parameter ("sec=krb5,seal") which turns on encryption
for that mount (and uses Kerberos for auth).  Update the warning message.

Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2024-02-09 14:43:27 -06:00
Shyam Prasad N
a39c757bf0 cifs: handle cases where multiple sessions share connection
Based on our implementation of multichannel, it is entirely
possible that a server struct may not be found in any channel
of an SMB session.

In such cases, we should be prepared to move on and search for
the server struct in the next session.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2024-02-09 14:43:25 -06:00
Shyam Prasad N
c6e02eefd6 cifs: change tcon status when need_reconnect is set on it
When a tcon is marked for need_reconnect, the intention
is to have it reconnected.

This change adjusts tcon->status in cifs_tree_connect
when need_reconnect is set. Also, this change has a minor
correction in resetting need_reconnect on success. It makes
sure that it is done with tc_lock held.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2024-02-09 14:43:23 -06:00
Filipe Manana
12c5128f10 btrfs: add new unused block groups to the list of unused block groups
Space reservations for metadata are, most of the time, pessimistic as we
reserve space for worst possible cases - where tree heights are at the
maximum possible height (8), we need to COW every extent buffer in a tree
path, need to split extent buffers, etc.

For data, we generally reserve the exact amount of space we are going to
allocate. The exception here is when using compression, in which case we
reserve space matching the uncompressed size, as the compression only
happens at writeback time and in the worst possible case we need that
amount of space in case the data is not compressible.

This means that when there's not available space in the corresponding
space_info object, we may need to allocate a new block group, and then
that block group might not be used after all. In this case the block
group is never added to the list of unused block groups and ends up
never being deleted - except if we unmount and mount again the fs, as
when reading block groups from disk we add unused ones to the list of
unused block groups (fs_info->unused_bgs). Otherwise a block group is
only added to the list of unused block groups when we deallocate the
last extent from it, so if no extent is ever allocated, the block group
is kept around forever.

This also means that if we have a bunch of tasks reserving space in
parallel we can end up allocating many block groups that end up never
being used or kept around for too long without being used, which has
the potential to result in ENOSPC failures in case for example we over
allocate too many metadata block groups and then end up in a state
without enough unallocated space to allocate a new data block group.

This is more likely to happen with metadata reservations as of kernel
6.7, namely since commit 28270e25c69a ("btrfs: always reserve space for
delayed refs when starting transaction"), because we started to always
reserve space for delayed references when starting a transaction handle
for a non-zero number of items, and also to try to reserve space to fill
the gap between the delayed block reserve's reserved space and its size.

So to avoid this, when finishing the creation a new block group, add the
block group to the list of unused block groups if it's still unused at
that time. This way the next time the cleaner kthread runs, it will delete
the block group if it's still unused and not needed to satisfy existing
space reservations.

Reported-by: Ivan Shapovalov <intelfx@intelfx.name>
Link: https://lore.kernel.org/linux-btrfs/9cdbf0ca9cdda1b4c84e15e548af7d7f9f926382.camel@intelfx.name/
CC: stable@vger.kernel.org # 6.7+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2024-02-09 20:29:22 +01:00
Filipe Manana
f4a9f21941 btrfs: do not delete unused block group if it may be used soon
Before deleting a block group that is in the list of unused block groups
(fs_info->unused_bgs), we check if the block group became used before
deleting it, as extents from it may have been allocated after it was added
to the list.

However even if the block group was not yet used, there may be tasks that
have only reserved space and have not yet allocated extents, and they
might be relying on the availability of the unused block group in order
to allocate extents. The reservation works first by increasing the
"bytes_may_use" field of the corresponding space_info object (which may
first require flushing delayed items, allocating a new block group, etc),
and only later a task does the actual allocation of extents.

For metadata we usually don't end up using all reserved space, as we are
pessimistic and typically account for the worst cases (need to COW every
single node in a path of a tree at maximum possible height, etc). For
data we usually reserve the exact amount of space we're going to allocate
later, except when using compression where we always reserve space based
on the uncompressed size, as compression is only triggered when writeback
starts so we don't know in advance how much space we'll actually need, or
if the data is compressible.

So don't delete an unused block group if the total size of its space_info
object minus the block group's size is less then the sum of used space and
space that may be used (space_info->bytes_may_use), as that means we have
tasks that reserved space and may need to allocate extents from the block
group. In this case, besides skipping the deletion, re-add the block group
to the list of unused block groups so that it may be reconsidered later,
in case the tasks that reserved space end up not needing to allocate
extents from it.

Allowing the deletion of the block group while we have reserved space, can
result in tasks failing to allocate metadata extents (-ENOSPC) while under
a transaction handle, resulting in a transaction abort, or failure during
writeback for the case of data extents.

CC: stable@vger.kernel.org # 6.0+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2024-02-09 20:29:16 +01:00
Filipe Manana
1693d5442c btrfs: add and use helper to check if block group is used
Add a helper function to determine if a block group is being used and make
use of it at btrfs_delete_unused_bgs(). This helper will also be used in
future code changes.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2024-02-09 20:29:14 +01:00