------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 5912 at fs/buffer.c:1229 __brelse fs/buffer.c:1229 [inline] WARNING: CPU: 0 PID: 5912 at fs/buffer.c:1229 brelse include/linux/buffer_head.h:324 [inline] WARNING: CPU: 0 PID: 5912 at fs/buffer.c:1229 __invalidate_bh_lrus fs/buffer.c:1498 [inline] WARNING: CPU: 0 PID: 5912 at fs/buffer.c:1229 invalidate_bh_lrus_cpu+0x1ba/0x280 fs/buffer.c:1544 Modules linked in: CPU: 0 UID: 0 PID: 5912 Comm: kworker/0:7 Not tainted 6.13.0-rc1-next-20241205-syzkaller #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 95 0f dc ff f0 ff 0b eb 1e e8 7b b3 75 ff eb 21 e8 74 b3 75 ff 90 48 c7 c7 e0 ea 18 8c e8 87 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:ffffc9000448fac0 EFLAGS: 00010046 RAX: c8e6c92a42c50d00 RBX: ffff8880603e2970 RCX: ffff88802c073c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000448fb78 R08: ffffffff81600dd2 R09: 1ffff110170c519a R10: dffffc0000000000 R11: ffffed10170c519b R12: 0000000000000068 R13: ffff8880b8639940 R14: 1ffff110170c7328 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe59a22058 CR3: 000000000e736000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lru_add_and_bh_lrus_drain mm/swap.c:739 [inline] lru_add_drain_per_cpu+0x21a/0x3f0 mm/swap.c:758 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244