------------[ cut here ]------------
WARNING: fs/ext4/inode.c:3938 at ext4_dirty_folio+0x100/0x12c fs/ext4/inode.c:3938, CPU#0: kworker/0:6/4810
Modules linked in:
CPU: 0 UID: 0 PID: 4810 Comm: kworker/0:6 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
Workqueue: events bio_dirty_fn
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : ext4_dirty_folio+0x100/0x12c fs/ext4/inode.c:3938
lr : ext4_dirty_folio+0x100/0x12c fs/ext4/inode.c:3938
sp : ffff8000a9567a30
x29: ffff8000a9567a30 x28: 1fffe0001e36ab70 x27: 0000000000000000
x26: ffff0000c1b27e58 x25: 05ffc00000001024 x24: 0000000000000001
x23: 05ffc00000001025 x22: fffffdffc4163ca8 x21: dfff800000000000
x20: ffff0000f6cc0da8 x19: fffffdffc4163c80 x18: 00000000ffffffff
x17: ffff80008a680000 x16: 0000000000000003 x15: ffff80008a209c80
x14: ffff80008a47fd08 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: ffff7fbff882c791 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff80008a9ce448 x4 : 0000000000000000 x3 : ffff800080ffd208
x2 : 0000000000000001 x1 : ffff0000f1b55700 x0 : 0000000000000000
Call trace:
 ext4_dirty_folio+0x100/0x12c fs/ext4/inode.c:3938 (P)
 folio_mark_dirty+0xf0/0x150 mm/page-writeback.c:2792
 __bio_release_pages+0x130/0x1f0 block/bio.c:1167
 bio_release_pages include/linux/bio.h:497 [inline]
 bio_dirty_fn+0xa0/0xf8 block/bio.c:1696
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3397
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3478
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842
irq event stamp: 359570
hardirqs last  enabled at (359569): [<ffff800086852efc>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:187 [inline]
hardirqs last  enabled at (359569): [<ffff800086852efc>] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:206
hardirqs last disabled at (359570): [<ffff80008682e34c>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425
softirqs last  enabled at (359558): [<ffff8000804d235c>] local_bh_enable include/linux/bottom_half.h:33 [inline]
softirqs last  enabled at (359558): [<ffff8000804d235c>] srcu_invoke_callbacks+0x32c/0x8f0 kernel/rcu/srcutree.c:1918
softirqs last disabled at (359554): [<ffff8000804d2334>] local_bh_disable include/linux/bottom_half.h:20 [inline]
softirqs last disabled at (359554): [<ffff8000804d2334>] srcu_invoke_callbacks+0x304/0x8f0 kernel/rcu/srcutree.c:1916
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: mm/page-writeback.c:2683 at __folio_mark_dirty+0x164/0xe34 mm/page-writeback.c:2683, CPU#0: kworker/0:6/4810
Modules linked in:
CPU: 0 UID: 0 PID: 4810 Comm: kworker/0:6 Tainted: G        W    L      syzkaller #0 PREEMPT 
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
Workqueue: events bio_dirty_fn
pstate: 834000c5 (Nzcv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __folio_mark_dirty+0x164/0xe34 mm/page-writeback.c:2683
lr : __folio_mark_dirty+0x164/0xe34 mm/page-writeback.c:2683
sp : ffff8000a9567960
x29: ffff8000a9567980 x28: 1fffffbff882c791 x27: 1fffffbff882c790
x26: dfff800000000000 x25: fffffdffc4163c88 x24: 0000000000000001
x23: 0000000000000000 x22: 0000000000000001 x21: 05ffc00000001035
x20: ffff0000f6cc0da8 x19: fffffdffc4163c80 x18: 00000000ffffffff
x17: ffff80008a680000 x16: 0000000000000003 x15: ffff80008a209c80
x14: ffff80008a47fd08 x13: 0000000000000001 x12: 0000000000000004
x11: ffff7000152acf10 x10: ffff7000152acf10 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff80008a9ce5a0 x4 : 0000000000000008 x3 : ffff800080933e00
x2 : 0000000000000000 x1 : ffff0000f1b55700 x0 : 0000000000000000
Call trace:
 __folio_mark_dirty+0x164/0xe34 mm/page-writeback.c:2683 (P)
 block_dirty_folio+0x174/0x1f8 fs/buffer.c:791
 ext4_dirty_folio+0xe0/0x12c fs/ext4/inode.c:3939
 folio_mark_dirty+0xf0/0x150 mm/page-writeback.c:2792
 __bio_release_pages+0x130/0x1f0 block/bio.c:1167
 bio_release_pages include/linux/bio.h:497 [inline]
 bio_dirty_fn+0xa0/0xf8 block/bio.c:1696
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3397
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3478
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842
irq event stamp: 359606
hardirqs last  enabled at (359605): [<ffff800086832420>] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline]
hardirqs last  enabled at (359605): [<ffff800086832420>] arm64_exit_to_kernel_mode+0x80/0x94 arch/arm64/kernel/entry-common.c:62
hardirqs last disabled at (359606): [<ffff800086852c9c>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:130 [inline]
hardirqs last disabled at (359606): [<ffff800086852c9c>] _raw_spin_lock_irqsave+0x2c/0x7c kernel/locking/spinlock.c:166
softirqs last  enabled at (359600): [<ffff80008030c57c>] softirq_handle_end kernel/softirq.c:468 [inline]
softirqs last  enabled at (359600): [<ffff80008030c57c>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650
softirqs last disabled at (359573): [<ffff8000800204b0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---