------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 6627 at fs/buffer.c:1229 __brelse fs/buffer.c:1229 [inline]
WARNING: CPU: 1 PID: 6627 at fs/buffer.c:1229 brelse include/linux/buffer_head.h:324 [inline]
WARNING: CPU: 1 PID: 6627 at fs/buffer.c:1229 __invalidate_bh_lrus fs/buffer.c:1498 [inline]
WARNING: CPU: 1 PID: 6627 at fs/buffer.c:1229 invalidate_bh_lrus_cpu+0x148/0x1e4 fs/buffer.c:1544
Modules linked in:
CPU: 1 UID: 0 PID: 6627 Comm: kworker/1:6 Tainted: G        W          6.13.0-rc6-syzkaller-g6251d1776bc5 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: mm_percpu_wq lru_add_drain_per_cpu
pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __brelse fs/buffer.c:1229 [inline]
pc : brelse include/linux/buffer_head.h:324 [inline]
pc : __invalidate_bh_lrus fs/buffer.c:1498 [inline]
pc : invalidate_bh_lrus_cpu+0x148/0x1e4 fs/buffer.c:1544
lr : __brelse fs/buffer.c:1229 [inline]
lr : brelse include/linux/buffer_head.h:324 [inline]
lr : __invalidate_bh_lrus fs/buffer.c:1498 [inline]
lr : invalidate_bh_lrus_cpu+0x148/0x1e4 fs/buffer.c:1544
sp : ffff8000a2347a70
x29: ffff8000a2347a70 x28: ffff80008f99d600 x27: 1fffe000196223ca
x26: 0000000000000001 x25: 00000000ffffffff x24: ffff0001b3817998
x23: 0000000000000000 x22: dfff800000000000 x21: 0000000000000000
x20: ffff0000dd201148 x19: ffff80008b842120 x18: 0000000000000008
x17: 0000000000000000 x16: ffff8000832776d4 x15: 0000000000000001
x14: 1fffe00036700eea x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000002 x10: 0000000000ff0100 x9 : 16d343b31e40c000
x8 : 16d343b31e40c000 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000a2347198 x4 : ffff80008fa90460 x3 : ffff80008073e590
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 __brelse fs/buffer.c:1229 [inline] (P)
 brelse include/linux/buffer_head.h:324 [inline] (P)
 __invalidate_bh_lrus fs/buffer.c:1498 [inline] (P)
 invalidate_bh_lrus_cpu+0x148/0x1e4 fs/buffer.c:1544 (P)
 lru_add_and_bh_lrus_drain mm/swap.c:714 [inline]
 lru_add_drain_per_cpu+0x114/0x18c mm/swap.c:733
 process_one_work+0x7a8/0x15cc kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x97c/0xeec kernel/workqueue.c:3391
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
irq event stamp: 8842
hardirqs last  enabled at (8841): [<ffff80008b6c876c>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]
hardirqs last  enabled at (8841): [<ffff80008b6c876c>] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:202
hardirqs last disabled at (8842): [<ffff800080dfd4b0>] invalidate_bh_lrus_cpu+0x40/0x1e4 fs/buffer.c:1542
softirqs last  enabled at (8732): [<ffff80008686d094>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (8732): [<ffff80008686d094>] nsim_fib_event_work+0x260/0x32bc drivers/net/netdevsim/fib.c:1488
softirqs last disabled at (8730): [<ffff80008686cf80>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (8730): [<ffff80008686cf80>] nsim_fib_event_work+0x14c/0x32bc drivers/net/netdevsim/fib.c:1486
---[ end trace 0000000000000000 ]---