syzbot

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VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 969 at fs/buffer.c:1229 __brelse fs/buffer.c:1229 [inline]
WARNING: CPU: 1 PID: 969 at fs/buffer.c:1229 brelse include/linux/buffer_head.h:324 [inline]
WARNING: CPU: 1 PID: 969 at fs/buffer.c:1229 __invalidate_bh_lrus fs/buffer.c:1498 [inline]
WARNING: CPU: 1 PID: 969 at fs/buffer.c:1229 invalidate_bh_lrus_cpu+0x1ba/0x280 fs/buffer.c:1544
Modules linked in:
CPU: 1 UID: 0 PID: 969 Comm: kworker/1:2 Not tainted 6.13.0-rc5-syzkaller-00006-g56e6a3499e14 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: mm_percpu_wq lru_add_drain_per_cpu
RIP: 0010:__brelse fs/buffer.c:1229 [inline]
RIP: 0010:brelse include/linux/buffer_head.h:324 [inline]
RIP: 0010:__invalidate_bh_lrus fs/buffer.c:1498 [inline]
RIP: 0010:invalidate_bh_lrus_cpu+0x1ba/0x280 fs/buffer.c:1544
Code: df be 04 00 00 00 e8 15 29 dc ff f0 ff 0b eb 1e e8 6b be 75 ff eb 21 e8 64 be 75 ff 90 48 c7 c7 e0 03 19 8c e8 67 62 36 ff 90 <0f> 0b 90 90 49 bf 00 00 00 00 00 fc ff df 48 8b 5c 24 10 43 80 3c
RSP: 0018:ffffc90003a47ac0 EFLAGS: 00010046
RAX: 7d9b9bbf13e7ae00 RBX: ffff88805947f230 RCX: ffff888026061e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003a47b78 R08: ffffffff81601a82 R09: fffffbfff1cfa210
R10: dffffc0000000000 R11: fffffbfff1cfa210 R12: 0000000000000008
R13: ffff8880b8739840 R14: 1ffff110170e7308 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c37968800 CR3: 000000007e44c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 lru_add_and_bh_lrus_drain mm/swap.c:714 [inline]
 lru_add_drain_per_cpu+0x21a/0x3f0 mm/swap.c:733
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa68/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>