FILE: kernel/smp.c


watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.2:3705]
Modules linked in:
irq event stamp: 7238
hardirqs last  enabled at (7237): [<ffff80000bfb8138>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (7237): [<ffff80000bfb8138>] exit_to_kernel_mode+0xe8/0x118 arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (7238): [<ffff80000bfb6088>] __el1_irq arch/arm64/kernel/entry-common.c:467 [inline]
hardirqs last disabled at (7238): [<ffff80000bfb6088>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:485
softirqs last  enabled at (3114): [<ffff8000080102e4>] _stext+0x2e4/0x37c
softirqs last disabled at (2783): [<ffff800008017c14>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
CPU: 1 PID: 3705 Comm: syz-executor.2 Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:443 [inline]
pc : smp_call_function_many_cond+0x958/0xa04 kernel/smp.c:988
lr : csd_lock_wait kernel/smp.c:443 [inline]
lr : smp_call_function_many_cond+0x964/0xa04 kernel/smp.c:988
sp : ffff80001394b9c0
x29: ffff80001394ba10 x28: 0000000000000008 x27: ffff0001fefefc80
x26: ffff80000d309000 x25: 0000000000000001 x24: 0000000000000011
x23: ffff80000d30cf28 x22: 0000000000000008 x21: ffffffffffffffff
x20: ffff0001fefd7148 x19: 0000000000000000 x18: 00000000000000c0
x17: ffff80000dd0b198 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000406 x12: ffff80000d4552c8
x11: ff808000082497ec x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000011 x7 : ffff8000083d3920 x6 : 0000000000000000
x5 : 0000000000000000 x4 : ffff8000086359b0 x3 : 0000000000000000
x2 : 0000000000000006 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:252 [inline]
 __cmpwait arch/arm64/include/asm/cmpxchg.h:278 [inline]
 csd_lock_wait kernel/smp.c:443 [inline]
 smp_call_function_many_cond+0x958/0xa04 kernel/smp.c:988
 on_each_cpu_cond_mask+0x5c/0xa4 kernel/smp.c:1154
 on_each_cpu_cond include/linux/smp.h:105 [inline]
 invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1423
 kill_bdev block/bdev.c:74 [inline]
 blkdev_flush_mapping+0x84/0x190 block/bdev.c:661
 blkdev_put_whole block/bdev.c:692 [inline]
 blkdev_put+0x1e0/0x284 block/bdev.c:952
 blkdev_close+0x24/0x38 block/fops.c:499
 __fput+0x198/0x3dc fs/file_table.c:320
 ____fput+0x20/0x30 fs/file_table.c:353
 task_work_run+0xc4/0x14c kernel/task_work.c:177
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x26c/0xbe0 kernel/exit.c:795
 do_group_exit+0x70/0xe8 kernel/exit.c:925
 get_signal+0xb0c/0xb40 kernel/signal.c:2857
 do_signal+0x128/0x438 arch/arm64/kernel/signal.c:1071
 do_notify_resume+0xc0/0x1f0 arch/arm64/kernel/signal.c:1124
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 asm_exit_to_user_mode+0x70/0x84 arch/arm64/kernel/entry-common.c:149
 ret_from_fork+0x1c/0x20 arch/arm64/kernel/entry.S:863