watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor:5948]
Modules linked in:
irq event stamp: 243464
hardirqs last  enabled at (243463): [<ffff800011ac0874>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline]
hardirqs last  enabled at (243463): [<ffff800011ac0874>] exit_to_kernel_mode+0x100/0x178 arch/arm64/kernel/entry-common.c:91
hardirqs last disabled at (243464): [<ffff800011ac0abc>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (235828): [<ffff8000081b6d74>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (235828): [<ffff8000081b6d74>] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586
softirqs last disabled at (235743): [<ffff8000081b740c>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (235743): [<ffff8000081b740c>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (235743): [<ffff8000081b740c>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (235743): [<ffff8000081b740c>] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641
CPU: 0 PID: 5948 Comm: syz-executor Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:440 [inline]
pc : smp_call_function_many_cond+0xa38/0x1044 kernel/smp.c:969
lr : csd_lock_wait kernel/smp.c:440 [inline]
lr : smp_call_function_many_cond+0xa50/0x1044 kernel/smp.c:969
sp : ffff8000207577b0
x29: ffff800020757800 x28: 0000000000000001 x27: dfff800000000000
x26: 0000000000000011 x25: ffff0001b41a1940 x24: ffff800014ac0ff8
x23: 1fffe00036834328 x22: ffff0001b41c70c8 x21: ffff800014cada80
x20: 0000000000000001 x19: ffff0001b41a1948 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082ec9a8 x15: 0000000000000406
x14: ffff0000d77ab680 x13: 0000000000ff0100 x12: 0000000000000001
x11: 0000000000000001 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000011 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80000840ffa0
x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001
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:440 [inline]
 smp_call_function_many_cond+0xa38/0x1044 kernel/smp.c:969
 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1135
 on_each_cpu_cond include/linux/smp.h:105 [inline]
 invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1426
 invalidate_bdev+0x90/0xc0 block/bdev.c:86
 ext4_put_super+0x864/0xed4 fs/ext4/super.c:1254
 generic_shutdown_super+0x130/0x29c fs/super.c:475
 kill_block_super+0x70/0xdc fs/super.c:1425
 deactivate_locked_super+0xb8/0x13c fs/super.c:335
 deactivate_super+0x108/0x128 fs/super.c:366
 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150
 task_work_run+0x130/0x1e4 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584