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1,399,042 commits

Author SHA1 Message Date
Thomas Hellström
ffa1e7ada4 block: Make request_queue lockdep splats show up earlier
In recent kernels, there are lockdep splats around the
struct request_queue::io_lockdep_map, similar to [1], but they
typically don't show up until reclaim with writeback happens.

Having multiple kernel versions released with a known risc of kernel
deadlock during reclaim writeback should IMHO be addressed and
backported to -stable with the highest priority.

In order to have these lockdep splats show up earlier,
preferrably during system initialization, prime the
struct request_queue::io_lockdep_map as GFP_KERNEL reclaim-
tainted. This will instead lead to lockdep splats looking similar
to [2], but without the need for reclaim + writeback
happening.

[1]:
[  189.762244] ======================================================
[  189.762432] WARNING: possible circular locking dependency detected
[  189.762441] 6.14.0-rc6-xe+ #6 Tainted: G     U
[  189.762450] ------------------------------------------------------
[  189.762459] kswapd0/119 is trying to acquire lock:
[  189.762467] ffff888110ceb710 (&q->q_usage_counter(io)#26){++++}-{0:0}, at: __submit_bio+0x76/0x230
[  189.762485]
               but task is already holding lock:
[  189.762494] ffffffff834c97c0 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0xbe/0xb00
[  189.762507]
               which lock already depends on the new lock.

[  189.762519]
               the existing dependency chain (in reverse order) is:
[  189.762529]
               -> #2 (fs_reclaim){+.+.}-{0:0}:
[  189.762540]        fs_reclaim_acquire+0xc5/0x100
[  189.762548]        kmem_cache_alloc_lru_noprof+0x4a/0x480
[  189.762558]        alloc_inode+0xaa/0xe0
[  189.762566]        iget_locked+0x157/0x330
[  189.762573]        kernfs_get_inode+0x1b/0x110
[  189.762582]        kernfs_get_tree+0x1b0/0x2e0
[  189.762590]        sysfs_get_tree+0x1f/0x60
[  189.762597]        vfs_get_tree+0x2a/0xf0
[  189.762605]        path_mount+0x4cd/0xc00
[  189.762613]        __x64_sys_mount+0x119/0x150
[  189.762621]        x64_sys_call+0x14f2/0x2310
[  189.762630]        do_syscall_64+0x91/0x180
[  189.762637]        entry_SYSCALL_64_after_hwframe+0x76/0x7e
[  189.762647]
               -> #1 (&root->kernfs_rwsem){++++}-{3:3}:
[  189.762659]        down_write+0x3e/0xf0
[  189.762667]        kernfs_remove+0x32/0x60
[  189.762676]        sysfs_remove_dir+0x4f/0x60
[  189.762685]        __kobject_del+0x33/0xa0
[  189.762709]        kobject_del+0x13/0x30
[  189.762716]        elv_unregister_queue+0x52/0x80
[  189.762725]        elevator_switch+0x68/0x360
[  189.762733]        elv_iosched_store+0x14b/0x1b0
[  189.762756]        queue_attr_store+0x181/0x1e0
[  189.762765]        sysfs_kf_write+0x49/0x80
[  189.762773]        kernfs_fop_write_iter+0x17d/0x250
[  189.762781]        vfs_write+0x281/0x540
[  189.762790]        ksys_write+0x72/0xf0
[  189.762798]        __x64_sys_write+0x19/0x30
[  189.762807]        x64_sys_call+0x2a3/0x2310
[  189.762815]        do_syscall_64+0x91/0x180
[  189.762823]        entry_SYSCALL_64_after_hwframe+0x76/0x7e
[  189.762833]
               -> #0 (&q->q_usage_counter(io)#26){++++}-{0:0}:
[  189.762845]        __lock_acquire+0x1525/0x2760
[  189.762854]        lock_acquire+0xca/0x310
[  189.762861]        blk_mq_submit_bio+0x8a2/0xba0
[  189.762870]        __submit_bio+0x76/0x230
[  189.762878]        submit_bio_noacct_nocheck+0x323/0x430
[  189.762888]        submit_bio_noacct+0x2cc/0x620
[  189.762896]        submit_bio+0x38/0x110
[  189.762904]        __swap_writepage+0xf5/0x380
[  189.762912]        swap_writepage+0x3c7/0x600
[  189.762920]        shmem_writepage+0x3da/0x4f0
[  189.762929]        pageout+0x13f/0x310
[  189.762937]        shrink_folio_list+0x61c/0xf60
[  189.763261]        evict_folios+0x378/0xcd0
[  189.763584]        try_to_shrink_lruvec+0x1b0/0x360
[  189.763946]        shrink_one+0x10e/0x200
[  189.764266]        shrink_node+0xc02/0x1490
[  189.764586]        balance_pgdat+0x563/0xb00
[  189.764934]        kswapd+0x1e8/0x430
[  189.765249]        kthread+0x10b/0x260
[  189.765559]        ret_from_fork+0x44/0x70
[  189.765889]        ret_from_fork_asm+0x1a/0x30
[  189.766198]
               other info that might help us debug this:

[  189.767089] Chain exists of:
                 &q->q_usage_counter(io)#26 --> &root->kernfs_rwsem --> fs_reclaim

[  189.767971]  Possible unsafe locking scenario:

[  189.768555]        CPU0                    CPU1
[  189.768849]        ----                    ----
[  189.769136]   lock(fs_reclaim);
[  189.769421]                                lock(&root->kernfs_rwsem);
[  189.769714]                                lock(fs_reclaim);
[  189.770016]   rlock(&q->q_usage_counter(io)#26);
[  189.770305]
                *** DEADLOCK ***

[  189.771167] 1 lock held by kswapd0/119:
[  189.771453]  #0: ffffffff834c97c0 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0xbe/0xb00
[  189.771770]
               stack backtrace:
[  189.772351] CPU: 4 UID: 0 PID: 119 Comm: kswapd0 Tainted: G     U             6.14.0-rc6-xe+ #6
[  189.772353] Tainted: [U]=USER
[  189.772354] Hardware name: ASUS System Product Name/PRIME B560M-A AC, BIOS 2001 02/01/2023
[  189.772354] Call Trace:
[  189.772355]  <TASK>
[  189.772356]  dump_stack_lvl+0x6e/0xa0
[  189.772359]  dump_stack+0x10/0x18
[  189.772360]  print_circular_bug.cold+0x17a/0x1b7
[  189.772363]  check_noncircular+0x13a/0x150
[  189.772365]  ? __pfx_stack_trace_consume_entry+0x10/0x10
[  189.772368]  __lock_acquire+0x1525/0x2760
[  189.772368]  ? ret_from_fork_asm+0x1a/0x30
[  189.772371]  lock_acquire+0xca/0x310
[  189.772372]  ? __submit_bio+0x76/0x230
[  189.772375]  ? lock_release+0xd5/0x2c0
[  189.772376]  blk_mq_submit_bio+0x8a2/0xba0
[  189.772378]  ? __submit_bio+0x76/0x230
[  189.772380]  __submit_bio+0x76/0x230
[  189.772382]  ? trace_hardirqs_on+0x1e/0xe0
[  189.772384]  submit_bio_noacct_nocheck+0x323/0x430
[  189.772386]  ? submit_bio_noacct_nocheck+0x323/0x430
[  189.772387]  ? __might_sleep+0x58/0xa0
[  189.772390]  submit_bio_noacct+0x2cc/0x620
[  189.772391]  ? count_memcg_events+0x68/0x90
[  189.772393]  submit_bio+0x38/0x110
[  189.772395]  __swap_writepage+0xf5/0x380
[  189.772396]  swap_writepage+0x3c7/0x600
[  189.772397]  shmem_writepage+0x3da/0x4f0
[  189.772401]  pageout+0x13f/0x310
[  189.772406]  shrink_folio_list+0x61c/0xf60
[  189.772409]  ? isolate_folios+0xe80/0x16b0
[  189.772410]  ? mark_held_locks+0x46/0x90
[  189.772412]  evict_folios+0x378/0xcd0
[  189.772414]  ? evict_folios+0x34a/0xcd0
[  189.772415]  ? lock_is_held_type+0xa3/0x130
[  189.772417]  try_to_shrink_lruvec+0x1b0/0x360
[  189.772420]  shrink_one+0x10e/0x200
[  189.772421]  shrink_node+0xc02/0x1490
[  189.772423]  ? shrink_node+0xa08/0x1490
[  189.772424]  ? shrink_node+0xbd8/0x1490
[  189.772425]  ? mem_cgroup_iter+0x366/0x480
[  189.772427]  balance_pgdat+0x563/0xb00
[  189.772428]  ? balance_pgdat+0x563/0xb00
[  189.772430]  ? trace_hardirqs_on+0x1e/0xe0
[  189.772431]  ? finish_task_switch.isra.0+0xcb/0x330
[  189.772433]  ? __switch_to_asm+0x33/0x70
[  189.772437]  kswapd+0x1e8/0x430
[  189.772438]  ? __pfx_autoremove_wake_function+0x10/0x10
[  189.772440]  ? __pfx_kswapd+0x10/0x10
[  189.772441]  kthread+0x10b/0x260
[  189.772443]  ? __pfx_kthread+0x10/0x10
[  189.772444]  ret_from_fork+0x44/0x70
[  189.772446]  ? __pfx_kthread+0x10/0x10
[  189.772447]  ret_from_fork_asm+0x1a/0x30
[  189.772450]  </TASK>

[2]:
[    8.760253] ======================================================
[    8.760254] WARNING: possible circular locking dependency detected
[    8.760255] 6.14.0-rc6-xe+ #7 Tainted: G     U
[    8.760256] ------------------------------------------------------
[    8.760257] (udev-worker)/674 is trying to acquire lock:
[    8.760259] ffff888100e39148 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_remove+0x32/0x60
[    8.760265]
               but task is already holding lock:
[    8.760266] ffff888110dc7680 (&q->q_usage_counter(io)#27){++++}-{0:0}, at: blk_mq_freeze_queue_nomemsave+0x12/0x30
[    8.760272]
               which lock already depends on the new lock.

[    8.760272]
               the existing dependency chain (in reverse order) is:
[    8.760273]
               -> #2 (&q->q_usage_counter(io)#27){++++}-{0:0}:
[    8.760276]        blk_alloc_queue+0x30a/0x350
[    8.760279]        blk_mq_alloc_queue+0x6b/0xe0
[    8.760281]        scsi_alloc_sdev+0x276/0x3c0
[    8.760284]        scsi_probe_and_add_lun+0x22a/0x440
[    8.760286]        __scsi_scan_target+0x109/0x230
[    8.760288]        scsi_scan_channel+0x65/0xc0
[    8.760290]        scsi_scan_host_selected+0xff/0x140
[    8.760292]        do_scsi_scan_host+0xa7/0xc0
[    8.760293]        do_scan_async+0x1c/0x160
[    8.760295]        async_run_entry_fn+0x32/0x150
[    8.760299]        process_one_work+0x224/0x5f0
[    8.760302]        worker_thread+0x1d4/0x3e0
[    8.760304]        kthread+0x10b/0x260
[    8.760306]        ret_from_fork+0x44/0x70
[    8.760309]        ret_from_fork_asm+0x1a/0x30
[    8.760312]
               -> #1 (fs_reclaim){+.+.}-{0:0}:
[    8.760315]        fs_reclaim_acquire+0xc5/0x100
[    8.760317]        kmem_cache_alloc_lru_noprof+0x4a/0x480
[    8.760319]        alloc_inode+0xaa/0xe0
[    8.760322]        iget_locked+0x157/0x330
[    8.760323]        kernfs_get_inode+0x1b/0x110
[    8.760325]        kernfs_get_tree+0x1b0/0x2e0
[    8.760327]        sysfs_get_tree+0x1f/0x60
[    8.760329]        vfs_get_tree+0x2a/0xf0
[    8.760332]        path_mount+0x4cd/0xc00
[    8.760334]        __x64_sys_mount+0x119/0x150
[    8.760336]        x64_sys_call+0x14f2/0x2310
[    8.760338]        do_syscall_64+0x91/0x180
[    8.760340]        entry_SYSCALL_64_after_hwframe+0x76/0x7e
[    8.760342]
               -> #0 (&root->kernfs_rwsem){++++}-{3:3}:
[    8.760345]        __lock_acquire+0x1525/0x2760
[    8.760347]        lock_acquire+0xca/0x310
[    8.760348]        down_write+0x3e/0xf0
[    8.760350]        kernfs_remove+0x32/0x60
[    8.760351]        sysfs_remove_dir+0x4f/0x60
[    8.760353]        __kobject_del+0x33/0xa0
[    8.760355]        kobject_del+0x13/0x30
[    8.760356]        elv_unregister_queue+0x52/0x80
[    8.760358]        elevator_switch+0x68/0x360
[    8.760360]        elv_iosched_store+0x14b/0x1b0
[    8.760362]        queue_attr_store+0x181/0x1e0
[    8.760364]        sysfs_kf_write+0x49/0x80
[    8.760366]        kernfs_fop_write_iter+0x17d/0x250
[    8.760367]        vfs_write+0x281/0x540
[    8.760370]        ksys_write+0x72/0xf0
[    8.760372]        __x64_sys_write+0x19/0x30
[    8.760374]        x64_sys_call+0x2a3/0x2310
[    8.760376]        do_syscall_64+0x91/0x180
[    8.760377]        entry_SYSCALL_64_after_hwframe+0x76/0x7e
[    8.760380]
               other info that might help us debug this:

[    8.760380] Chain exists of:
                 &root->kernfs_rwsem --> fs_reclaim --> &q->q_usage_counter(io)#27

[    8.760384]  Possible unsafe locking scenario:

[    8.760384]        CPU0                    CPU1
[    8.760385]        ----                    ----
[    8.760385]   lock(&q->q_usage_counter(io)#27);
[    8.760387]                                lock(fs_reclaim);
[    8.760388]                                lock(&q->q_usage_counter(io)#27);
[    8.760390]   lock(&root->kernfs_rwsem);
[    8.760391]
                *** DEADLOCK ***

[    8.760391] 6 locks held by (udev-worker)/674:
[    8.760392]  #0: ffff8881209ac420 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0x72/0xf0
[    8.760398]  #1: ffff88810c80f488 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x136/0x250
[    8.760402]  #2: ffff888125d1d330 (kn->active#101){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x13f/0x250
[    8.760406]  #3: ffff888110dc7bb0 (&q->sysfs_lock){+.+.}-{3:3}, at: queue_attr_store+0x148/0x1e0
[    8.760411]  #4: ffff888110dc7680 (&q->q_usage_counter(io)#27){++++}-{0:0}, at: blk_mq_freeze_queue_nomemsave+0x12/0x30
[    8.760416]  #5: ffff888110dc76b8 (&q->q_usage_counter(queue)#27){++++}-{0:0}, at: blk_mq_freeze_queue_nomemsave+0x12/0x30
[    8.760421]
               stack backtrace:
[    8.760422] CPU: 7 UID: 0 PID: 674 Comm: (udev-worker) Tainted: G     U             6.14.0-rc6-xe+ #7
[    8.760424] Tainted: [U]=USER
[    8.760425] Hardware name: ASUS System Product Name/PRIME B560M-A AC, BIOS 2001 02/01/2023
[    8.760426] Call Trace:
[    8.760427]  <TASK>
[    8.760428]  dump_stack_lvl+0x6e/0xa0
[    8.760431]  dump_stack+0x10/0x18
[    8.760433]  print_circular_bug.cold+0x17a/0x1b7
[    8.760437]  check_noncircular+0x13a/0x150
[    8.760441]  ? save_trace+0x54/0x360
[    8.760445]  __lock_acquire+0x1525/0x2760
[    8.760446]  ? irqentry_exit+0x3a/0xb0
[    8.760448]  ? sysvec_apic_timer_interrupt+0x57/0xc0
[    8.760452]  lock_acquire+0xca/0x310
[    8.760453]  ? kernfs_remove+0x32/0x60
[    8.760457]  down_write+0x3e/0xf0
[    8.760459]  ? kernfs_remove+0x32/0x60
[    8.760460]  kernfs_remove+0x32/0x60
[    8.760462]  sysfs_remove_dir+0x4f/0x60
[    8.760464]  __kobject_del+0x33/0xa0
[    8.760466]  kobject_del+0x13/0x30
[    8.760467]  elv_unregister_queue+0x52/0x80
[    8.760470]  elevator_switch+0x68/0x360
[    8.760472]  elv_iosched_store+0x14b/0x1b0
[    8.760475]  queue_attr_store+0x181/0x1e0
[    8.760479]  ? lock_acquire+0xca/0x310
[    8.760480]  ? kernfs_fop_write_iter+0x13f/0x250
[    8.760482]  ? lock_is_held_type+0xa3/0x130
[    8.760485]  sysfs_kf_write+0x49/0x80
[    8.760487]  kernfs_fop_write_iter+0x17d/0x250
[    8.760489]  vfs_write+0x281/0x540
[    8.760494]  ksys_write+0x72/0xf0
[    8.760497]  __x64_sys_write+0x19/0x30
[    8.760499]  x64_sys_call+0x2a3/0x2310
[    8.760502]  do_syscall_64+0x91/0x180
[    8.760504]  ? trace_hardirqs_off+0x5d/0xe0
[    8.760506]  ? handle_softirqs+0x479/0x4d0
[    8.760508]  ? hrtimer_interrupt+0x13f/0x280
[    8.760511]  ? irqentry_exit_to_user_mode+0x8b/0x260
[    8.760513]  ? clear_bhb_loop+0x15/0x70
[    8.760515]  ? clear_bhb_loop+0x15/0x70
[    8.760516]  ? clear_bhb_loop+0x15/0x70
[    8.760518]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
[    8.760520] RIP: 0033:0x7aa3bf2f5504
[    8.760522] Code: c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 80 3d c5 8b 10 00 00 74 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 55 48 89 e5 48 83 ec 20 48 89
[    8.760523] RSP: 002b:00007ffc1e3697d8 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[    8.760526] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007aa3bf2f5504
[    8.760527] RDX: 0000000000000003 RSI: 00007ffc1e369ae0 RDI: 000000000000001c
[    8.760528] RBP: 00007ffc1e369800 R08: 00007aa3bf3f51c8 R09: 00007ffc1e3698b0
[    8.760528] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[    8.760529] R13: 00007ffc1e369ae0 R14: 0000613ccf21f2f0 R15: 00007aa3bf3f4e80
[    8.760533]  </TASK>

v2:
- Update a code comment to increase readability (Ming Lei).

Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250318095548.5187-1-thomas.hellstrom@linux.intel.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-03-18 07:57:33 -06:00
Christoph Hellwig
b0d4258119 block: fix a comment in the queue_attrs[] array
queue_ra_entry uses limits_lock just like the attributes above it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Nilay Shroff <nilay@linux.ibm.com>
Link: https://lore.kernel.org/r/20250312150127.703534-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-03-18 07:54:50 -06:00
Johannes Berg
cd0b9da682 wifi: nl80211: re-enable multi-link reconfiguration
With the recent fixes, we can re-enable multi-link
reconfiguration. Also add a CMD() entry to allow
userspace discovery for it.

Link: https://patch.msgid.link/20250318135009.a95c43837a0f.Ic6ed3d184e5be8ba47c6affa7271daaf824fd823@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-03-18 14:52:11 +01:00
Hajime Tazaki
16a0ca5e4e um: x86: clean up elf specific definitions
The file arch/x86/um/asm/module.h is equivalent to the definition of
asm-generic.  Thus this commit cleans up to use it.

Signed-off-by: Hajime Tazaki <thehajime@gmail.com>
Link: https://patch.msgid.link/2d70a0ed79ee0a0bef80ad4790063f4833dd9bed.1737348399.git.thehajime@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-03-18 14:48:31 +01:00
Christoph Hellwig
b3f8f2903b xfs: remove the flags argument to xfs_buf_get_uncached
No callers passes flags to xfs_buf_get_uncached, which makes sense
given that the flags apply to behavior not used for uncached buffers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
2025-03-18 14:47:45 +01:00
Christoph Hellwig
8d54b48fef xfs: remove the flags argument to xfs_buf_read_uncached
No callers passes flags to xfs_buf_read_uncached, which makes sense
given that the flags apply to behavior not used for uncached buffers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
2025-03-18 14:47:45 +01:00
Christoph Hellwig
44e1f90b16 xfs: remove xfs_buf_free_maps
xfs_buf_free_maps only has a single caller, so open code it there.  Stop
zeroing the b_maps pointer as the buffer is freed in the next line.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
2025-03-18 14:47:45 +01:00
Christoph Hellwig
5abea7094b xfs: remove xfs_buf_get_maps
xfs_buf_get_maps has a single caller, and can just be open coded there.
When doing that, stop handling the allocation failure as we always pass
__GFP_NOFAIL to the slab allocator, and use the proper kcalloc helper for
array allocations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
2025-03-18 14:47:45 +01:00
Christoph Hellwig
1ec1207722 xfs: call xfs_buf_alloc_backing_mem from _xfs_buf_alloc
We never allocate a buffer without backing memory.  Simplify the call
chain by calling xfs_buf_alloc_backing_mem from _xfs_buf_alloc.  To
avoid a forward declaration, move _xfs_buf_alloc down a bit in the
file.

Also drop the pointless _-prefix from _xfs_buf_alloc.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
2025-03-18 14:47:45 +01:00
Dhruv Deshpande
35ef1c79d2 ALSA: hda/realtek: Support mute LED on HP Laptop 15s-du3xxx
The mute LED on this HP laptop uses ALC236 and requires a quirk to function.
This patch enables the existing quirk for the device.

Tested on my laptop and the LED behaviour works as intended.

Cc: stable@vger.kernel.org
Signed-off-by: Dhruv Deshpande <dhrv.d@proton.me>
Link: https://patch.msgid.link/20250317085621.45056-1-dhrv.d@proton.me
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-03-18 14:39:51 +01:00
Alexandre Ghiti
33981b1c4e
riscv: Fix missing __free_pages() in check_vector_unaligned_access()
The locally allocated pages are never freed up, so add the corresponding
__free_pages().

Fixes: e7c9d66e31 ("RISC-V: Report vector unaligned access speed hwprobe")
Link: https://lore.kernel.org/r/20250228090613.345309-1-alexghiti@rivosinc.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 13:37:56 +00:00
Tingbo Liao
475afa39b1
riscv: Fix the __riscv_copy_vec_words_unaligned implementation
Correct the VEC_S macro definition to fix the implementation
of vector words copy in the case of unalignment in RISC-V.

Fixes: e7c9d66e31 ("RISC-V: Report vector unaligned access speed hwprobe")
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Tingbo Liao <tingbo.liao@starfivetech.com>
Link: https://lore.kernel.org/r/20250228090801.8334-1-tingbo.liao@starfivetech.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 13:37:27 +00:00
Olivia Mackintosh
38e94cefbf ALSA: usb-audio: separate DJM-A9 cap lvl options
Mixer quicks for the Pioneer DJM-A9 mixer was added in 5289d00 with
additional capture level values added to the common DJM array of values.

This breaks the existing DJM mixers however as alsa-utils relies on
enumeration of the actual mixer options based on the value array which
results in error when storing state.

This commit just separates the A9 values into a separate array and
references them in the corresponding mixer control.

Fixes: 5289d00696 ("ALSA: usb-audio: Add Pioneer DJ/AlphaTheta DJM-A9 Mixer")
Signed-off-by: Olivia Mackintosh <livvy@base.nu>
Link: https://patch.msgid.link/20250316153323.16381-1-livvy@base.nu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-03-18 14:37:14 +01:00
Thomas Weißschuh
eb8db421ce
riscv: mm: Don't use %pK through printk
Restricted pointers ("%pK") are not meant to be used through printk().
It can unintentionally expose security sensitive, raw pointer values.

Use regular pointer formatting instead.

Link: https://lore.kernel.org/lkml/20250113171731-dc10e3c1-da64-4af0-b767-7c7070468023@linutronix.de/
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20250217-restricted-pointers-riscv-v1-1-72a078076a76@linutronix.de
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 13:35:07 +00:00
Zixian Zeng
eac5b13881
riscv: remove redundant CMDLINE_FORCE check
Drop redundant CMDLINE_FORCE check as it's already done in
function early_init_dt_scan_chosen().

Signed-off-by: Zixian Zeng <sycamoremoon376@gmail.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20250114-rebund-v1-1-5632b2d54d6c@gmail.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 13:33:31 +00:00
Juhan Jin
5f1a58ed91
riscv: ftrace: Add parentheses in macro definitions of make_call_t0 and make_call_ra
This patch adds parentheses to parameters caller and callee of macros
make_call_t0 and make_call_ra. Every existing invocation of these two
macros uses a single variable for each argument, so the absence of the
parentheses seems okay. However, future invocations might use more
complex expressions as arguments. For example, a future invocation might
look like this: make_call_t0(a - b, c, call). Without parentheses in the
macro definition, the macro invocation expands to:

...
unsigned int offset = (unsigned long) c - (unsigned long) a - b;
...

which is clearly wrong.

The use of parentheses ensures arguments are correctly evaluated and
potentially saves future users of make_call_t0 and make_call_ra debugging
trouble.

Fixes: 6724a76cff ("riscv: ftrace: Reduce the detour code size to half")
Signed-off-by: Juhan Jin <juhan.jin@foxmail.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/tencent_AE90AA59903A628E87E9F80E563DA5BA5508@qq.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 13:32:55 +00:00
Masahiro Yamada
82e81b8950
riscv: migrate to the generic rule for built-in DTB
Commit 654102df2a ("kbuild: add generic support for built-in boot
DTBs") introduced generic support for built-in DTBs.

Select GENERIC_BUILTIN_DTB when built-in DTB support is enabled.

To keep consistency across architectures, this commit also renames
CONFIG_BUILTIN_DTB_SOURCE to CONFIG_BUILTIN_DTB_NAME.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20241222000836.2578171-1-masahiroy@kernel.org
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 13:30:13 +00:00
Chen Ni
34ba1fcd74 xfs: remove unnecessary NULL check before kvfree()
Remove unnecessary NULL check before kvfree() reported by
Coccinelle/coccicheck and the semantic patch at
scripts/coccinelle/free/ifnullfree.cocci.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
2025-03-18 14:24:13 +01:00
Geert Uytterhoeven
c746ff4a67 pinctrl: spacemit: PINCTRL_SPACEMIT_K1 should not default to y unconditionally
Merely enabling compile-testing should not enable additional
functionality.

Fixes: 7ff4faba63 ("pinctrl: spacemit: enable config option")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yixun Lan <dlan@gentoo.org>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Alex Elder <elder@riscstar.com>
Reviewed-by: Alex Elder <elder@riscstar.com>
Link: https://lore.kernel.org/6881b8d1ad74ac780af8a974e604b5ef3f5d4aad.1742198691.git.geert+renesas@glider.be
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2025-03-18 14:11:46 +01:00
Carlos Maiolino
c3a60b673a Merge branch 'xfs-6.15-folios_vmalloc' into XFS-for-linus-6.15-merge
Merge buffer cache conversion to folios and vmalloc

Signed-off-by: Carlos Maiolino <cem@kernel.org>
2025-03-18 14:10:30 +01:00
Charlie Jenkins
bba547810c
riscv: tracing: Fix __write_overflow_field in ftrace_partial_regs()
The size of &regs->a0 is unknown, causing the error:

../include/linux/fortify-string.h:571:25: warning: call to
'__write_overflow_field' declared with attribute warning: detected write
beyond size of field (1st parameter); maybe use struct_group()?
[-Wattribute-warning]

Fix this by wrapping the required registers in pt_regs with
struct_group() and reference the group when doing the offending
memcpy().

Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20250224-fix_ftrace_partial_regs-v1-1-54b906417e86@rivosinc.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 13:06:05 +00:00
Carlos Maiolino
8e6415460f Merge branch 'xfs-6.15-zoned_devices' into XFS-for-linus-6.15-merge
Merge Zoned allocator for XFS.

Signed-off-by: Carlos Maiolino <cem@kernel.org>
2025-03-18 14:06:04 +01:00
Geert Uytterhoeven
72770690e0
riscv: Remove duplicate CLINT_TIMER selections
Since commit f862bbf4cd ("riscv: Allow NOMMU kernels to run in
S-mode") in v6.10, CLINT_TIMER is selected by the main RISCV symbol when
RISCV_M_MODE is enabled.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/ce55529a42fa232cacd580e38866c60701f91095.1738764474.git.geert+renesas@glider.be
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 13:05:13 +00:00
Geert Uytterhoeven
c2db83fe10
riscv: defconfig: Disable Renesas SoC support
Follow-up to commit e36ddf3226 ("riscv: defconfig: Disable RZ/Five
peripheral support") in v6.12-rc1:

  - Disable ARCH_RENESAS, too, as currently RZ/Five is the sole Renesas
    RISC-V SoC,
  - Drop no longer needed explicit disable of USB_XHCI_RCAR, which
    depends on ARCH_RENESAS.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/e8a2fb273c8c68bd6d526b924b4212f397195b28.1738764211.git.geert+renesas@glider.be
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 13:04:25 +00:00
Chin Yik Ming
418af0eafb
riscv: Fix a comment typo in set_mm_asid()
s/verion/version

Signed-off-by: Chin Yik Ming <yikming2222@gmail.com>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Link: https://lore.kernel.org/r/20241114212725.4172401-1-yikming2222@gmail.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 13:02:47 +00:00
Alexandre Ghiti
a5edc510da
Merge patch series "Support SSTC while PM operations"
Nick Hu <nick.hu@sifive.com> says:

When the cpu is going to be hotplug, stop the stimecmp to prevent pending
interrupt.
When the cpu is going to be suspended, save the stimecmp before entering
the suspend state and restore it in the resume path.

* patches from https://lore.kernel.org/r/20250219114135.27764-1-nick.hu@sifive.com:
  clocksource/drivers/timer-riscv: Stop stimecmp when cpu hotplug
  riscv: Add stimecmp save and restore

Link: https://lore.kernel.org/r/20250219114135.27764-1-nick.hu@sifive.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 12:59:08 +00:00
Nick Hu
70c93b026e
clocksource/drivers/timer-riscv: Stop stimecmp when cpu hotplug
Stop the timer when the cpu is going to be offline otherwise the
timer interrupt may be pending while performing power-down.

Suggested-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/lkml/20240829033904.477200-3-nick.hu@sifive.com/T/#u
Signed-off-by: Nick Hu <nick.hu@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20250219114135.27764-3-nick.hu@sifive.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 12:59:03 +00:00
Nick Hu
ffef54ad41
riscv: Add stimecmp save and restore
If the HW support the SSTC extension, we should save and restore the
stimecmp register while cpu non retention suspend.

Signed-off-by: Nick Hu <nick.hu@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20250219114135.27764-2-nick.hu@sifive.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 12:59:03 +00:00
Gustavo A. R. Silva
e74c0a7875 wifi: iwlwifi: dvm: Avoid -Wflex-array-member-not-at-end warnings
-Wflex-array-member-not-at-end was introduced in GCC-14, and we are
getting ready to enable it, globally.

So, in order to avoid ending up with a flexible-array member in the
middle of multiple other structs, we use the `__struct_group()`
helper to create a new tagged `struct iwl_tx_cmd_hdr`. This structure
groups together all the members of the flexible `struct iwl_tx_cmd`
except the flexible array.

As a result, the array is effectively separated from the rest of the
members without modifying the memory layout of the flexible structure.
We then change the type of the middle struct members currently causing
trouble from `struct iwl_tx_cmd` to `struct iwl_tx_cmd_hdr`.

We also want to ensure that when new members need to be added to the
flexible structure, they are always included within the newly created
tagged struct. For this, we use `static_assert()`. This ensures that the
memory layout for both the flexible structure and the new tagged struct
is the same after any changes.

This approach avoids having to implement `struct iwl_tx_cmd_hdr`
as a completely separate structure, thus preventing having to maintain
two independent but basically identical structures, closing the door
to potential bugs in the future.

So, with these changes, fix the following warnings:

drivers/net/wireless/intel/iwlwifi/dvm/commands.h:2315:27: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]
drivers/net/wireless/intel/iwlwifi/dvm/commands.h:2426:27: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/Zr5QR03+wyw571zd@elsanto
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-03-18 13:54:14 +01:00
Emmanuel Grumbach
db9b4b8311 wifi: iwlwifi: do not use iwlmld for non-wifi7 devices
Roll-back to use iwlmvm for those devices. iwlmld will support wifi7
capable devices only. The firmware for the non-wifi7 capable will soon
be frozen and we don't want iwlmld to have to support devices that will
require the old APIs.

Fixes: d1e879ec60 ("wifi: iwlwifi: add iwlmld sub-driver")
Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://patch.msgid.link/20250318103019.df6df96df826.I0020ca9f6c6c928caa78721666df131a692c6186@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-03-18 13:51:03 +01:00
Emmanuel Grumbach
e6f98260d7 wifi: iwlwifi: remove a buggy else statement in op_mode selection
This led to weird behavior. The next debug print was not printed.

Fixes: d1e879ec60 ("wifi: iwlwifi: add iwlmld sub-driver")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://patch.msgid.link/20250318103019.bf54d0474909.Icfb129d4cf13b42b13e2ac4aa1bd171ef46bf561@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-03-18 13:50:49 +01:00
Chin Yik Ming
7f238b1266
riscv: Simplify base extension checks and direct boolean return
Reduce three lines checking to single line using a ternary conditional
expression for getting the base extension word. In addition, the
test_bit macro function already return a boolean which matches the
return type of the caller, so directly return the result of the test_bit
macro function.

Signed-off-by: Chin Yik Ming <yikming2222@gmail.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20250129203843.1136838-1-yikming2222@gmail.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 12:47:20 +00:00
Jinjie Ruan
a4a58f510b
riscv: Remove unused TASK_TI_FLAGS
Since commit f0bddf5058 ("riscv: entry: Convert to generic
entry"), TASK_TI_FLAGS is not used any more, so remove it.

Fixes: f0bddf5058 ("riscv: entry: Convert to generic entry")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Link: https://lore.kernel.org/r/20241109014605.2801492-1-ruanjinjie@huawei.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 12:46:15 +00:00
Eric Dumazet
15492700ac tcp: cache RTAX_QUICKACK metric in a hot cache line
tcp_in_quickack_mode() is called from input path for small packets.

It calls __sk_dst_get() which reads sk->sk_dst_cache which has been
put in sock_read_tx group (for good reasons).

Then dst_metric(dst, RTAX_QUICKACK) also needs extra cache line misses.

Cache RTAX_QUICKACK in icsk->icsk_ack.dst_quick_ack to no longer pull
these cache lines for the cases a delayed ACK is scheduled.

After this patch TCP receive path does not longer access sock_read_tx
group.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250312083907.1931644-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-18 13:44:59 +01:00
Yunhui Cui
36dec9e448
RISC-V: selftests: Add TEST_ZICBOM into CBO tests
Add test for Zicbom and its block size into CBO tests, when
Zicbom is present, test that cbo.clean/flush may be issued and works.
As the software can't verify the clean/flush functions, we just judged
that cbo.clean/flush isn't executed illegally.

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Signed-off-by: Yunhui Cui <cuiyunhui@bytedance.com>
Link: https://lore.kernel.org/r/20250226063206.71216-4-cuiyunhui@bytedance.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 12:44:17 +00:00
Yunhui Cui
eb10039709
RISC-V: hwprobe: Expose Zicbom extension and its block size
Expose Zicbom through hwprobe and also provide a key to extract its
respective block size.

[ alex: Fix merge conflicts and hwprobe numbering ]

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Signed-off-by: Yunhui Cui <cuiyunhui@bytedance.com>
Link: https://lore.kernel.org/r/20250226063206.71216-3-cuiyunhui@bytedance.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 12:43:56 +00:00
Yunhui Cui
de70b532f9
RISC-V: Enable cbo.clean/flush in usermode
Enabling cbo.clean and cbo.flush in user mode makes it more
convenient to manage the cache state and achieve better performance.

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Yunhui Cui <cuiyunhui@bytedance.com>
Link: https://lore.kernel.org/r/20250226063206.71216-2-cuiyunhui@bytedance.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
2025-03-18 12:35:14 +00:00
Peng Fan
cc1273dfac
spi: stm32-ospi: Include "gpio/consumer.h"
of_gpio.h should be deprecated, use "gpio/consumer.h".

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://patch.msgid.link/20250318045549.1711502-1-peng.fan@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-03-18 12:27:42 +00:00
Lukas Bulwahn
e7c7c1d2fc
MAINTAINERS: adjust the file entry in GOCONTROLL MODULINE MODULE SLOT
Commit 8f1cc52425 ("MAINTAINERS: add maintainer for the GOcontroll
Moduline module slot") adds a new MAINTAINERS section referring to the
non-existent file:
  Documentation/connector/gocontroll,moduline-module-slot.yaml

It intends to refer to the file with the same name in
Documentation/devicetree/bindings/connector/. Adjust the file reference to
the intended location.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Reviewed-by: Maud Spierings <maudspierings@gocontroll.com>
Link: https://patch.msgid.link/20250318080913.31455-1-lukas.bulwahn@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-03-18 12:27:41 +00:00
Jayesh Choudhary
45ff65e30d
ASoC: ti: j721e-evm: Fix clock configuration for ti,j7200-cpb-audio compatible
For 'ti,j7200-cpb-audio' compatible, there is support for only one PLL for
48k. For 11025, 22050, 44100 and 88200 sampling rates, due to absence of
J721E_CLK_PARENT_44100, we get EINVAL while running any audio application.
Add support for these rates by using the 48k parent clock and adjusting
the clock for these rates later in j721e_configure_refclk.

Fixes: 6748d05590 ("ASoC: ti: Add custom machine driver for j721e EVM (CPB and IVI)")
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Link: https://patch.msgid.link/20250318113524.57100-1-j-choudhary@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-03-18 12:27:34 +00:00
Mark Brown
30514f2576
spi: Merge up fixes
They are a dependency for applying some changes to the MAINTAINERS
file.
2025-03-18 12:27:00 +00:00
ChiYuan Huang
5e9491370a
regulator: dt-bindings: rtq2208: Cleanup whitespace
Remove the whitespace that checkpatch scaned.

Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://patch.msgid.link/9faa2e3aaa0fca0e66e478df4f59c6ec4bfc8def.1742295647.git.cy_huang@richtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-03-18 12:25:25 +00:00
ChiYuan Huang
64b3fb38b4
regulator: dt-bindings: rtq2208: Mark fixed LDO VOUT property as deprecated
Since the check for fixed LDO VOUT can be identified by the HW register,
mark the unnecessary property as deprecated.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://patch.msgid.link/f813c7b49c152193f24198c4baf2c3f04cb0a74d.1742295647.git.cy_huang@richtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-03-18 12:25:24 +00:00
Chen Ni
1822c4484e
ASoC: codecs: ntp8918: Remove duplicate clk.h header
Remove duplicate header which is included twice.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Link: https://patch.msgid.link/20250318081043.2870229-1-nichen@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-03-18 12:25:06 +00:00
Jayesh Choudhary
340abded86
ASoC: ti: j721e-evm: Reduce log level for EPROBE_DEFER
Drop the log level for deferral probe to avoid flooding in kernel logs.

Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Link: https://patch.msgid.link/20250318104715.43267-1-j-choudhary@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-03-18 12:25:05 +00:00
Andreas Gruenbacher
8cb70b91b2 gfs2: some comment clarifications
Since commit e1fa9ea85c ("gfs2: Stop using glock holder auto-demotion
for now"), we unconditionally drop the inode glock before trying to
fault in more pages.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2025-03-18 13:21:39 +01:00
Paolo Abeni
3c6b97a9d5 Merge branch 'inet-frags-fully-use-rcu'
Eric Dumazet says:

====================
inet: frags: fully use RCU

While inet reassembly uses RCU, it is acquiring/releasing
a refcount on struct inet_frag_queue in fast path,
for no good reason.

This was mentioned in one patch changelog seven years ago :/

This series is removing these refcount changes, by extending
RCU sections.
====================

Link: https://patch.msgid.link/20250312082250.1803501-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-18 13:18:38 +01:00
Eric Dumazet
ca0359df45 inet: frags: save a pair of atomic operations in reassembly
As mentioned in commit 648700f76b ("inet: frags:
use rhashtables for reassembly units"):

  A followup patch will even remove the refcount hold/release
  left from prior implementation and save a couple of atomic
  operations.

This patch implements this idea, seven years later.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20250312082250.1803501-5-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-18 13:18:36 +01:00
Eric Dumazet
eb0dfc0ef1 inet: frags: change inet_frag_kill() to defer refcount updates
In the following patch, we no longer assume inet_frag_kill()
callers own a reference.

Consuming two refcounts from inet_frag_kill() would lead in UAF.

Propagate the pointer to the refs that will be consumed later
by the final inet_frag_putn() call.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250312082250.1803501-4-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-18 13:18:36 +01:00
Eric Dumazet
a2fb987c0e ipv4: frags: remove ipq_put()
Replace ipq_put() with inet_frag_putn()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250312082250.1803501-3-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-18 13:18:36 +01:00