watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.4:5249]
Modules linked in:
irq event stamp: 75590
hardirqs last  enabled at (75589): [<ffff80001215aaa8>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (75589): [<ffff80001215aaa8>] exit_to_kernel_mode+0xe8/0x118 arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (75590): [<ffff800012158784>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (75590): [<ffff800012158784>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (70878): [<ffff800008020d7c>] softirq_handle_end kernel/softirq.c:414 [inline]
softirqs last  enabled at (70878): [<ffff800008020d7c>] __do_softirq+0xc1c/0xe38 kernel/softirq.c:600
softirqs last disabled at (70813): [<ffff80000802a99c>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
CPU: 1 PID: 5249 Comm: syz-executor.4 Not tainted 6.1.87-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
pstate: 60401005 (nZCv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:424 [inline]
pc : smp_call_function_many_cond+0x20f8/0x32b8 kernel/smp.c:998
lr : csd_lock_wait kernel/smp.c:424 [inline]
lr : smp_call_function_many_cond+0x2110/0x32b8 kernel/smp.c:998
sp : ffff800020cd7040
x29: ffff800020cd73b0 x28: 1fffe00036871a38 x27: ffff800015851130
x26: ffff800020cd71a8 x25: ffff0001b4372348 x24: 0000000000000000
x23: dfff800000000000 x22: ffff0001b438d1c8 x21: 0000000000000011
x20: ffff800020cd71a0 x19: ffff0001b438d1c0 x18: 1fffe0003686f176
x17: ffff80001584d000 x16: ffff800008305ec4 x15: 0000000000000002
x14: 0000000000000406 x13: ffff0000db779bc0 x12: 0000000000040000
x11: 000000000003ffff x10: ffff800020099000 x9 : 0000000000000000
x8 : 0000000000000011 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : ffff800008b3820c x3 : ffff8000084535b4
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:424 [inline]
 smp_call_function_many_cond+0x20f8/0x32b8 kernel/smp.c:998
 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1166
 on_each_cpu_cond include/linux/smp.h:105 [inline]
 invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1412
 kill_bdev block/bdev.c:75 [inline]
 blkdev_flush_mapping+0x128/0x280 block/bdev.c:664
 blkdev_put_whole block/bdev.c:695 [inline]
 blkdev_put+0x464/0x6e0 block/bdev.c:955
 btrfs_scan_one_device+0x450/0x61c fs/btrfs/volumes.c:1425
 btrfs_mount_root+0x424/0x7f8 fs/btrfs/super.c:1797
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
 vfs_get_tree+0x90/0x274 fs/super.c:1562
 fc_mount fs/namespace.c:1043 [inline]
 vfs_kern_mount+0xdc/0x178 fs/namespace.c:1073
 btrfs_mount+0x330/0x9c8 fs/btrfs/super.c:1895
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
 vfs_get_tree+0x90/0x274 fs/super.c:1562
 do_new_mount+0x278/0x8fc fs/namespace.c:3051
 path_mount+0x590/0xe5c fs/namespace.c:3381
 do_mount fs/namespace.c:3394 [inline]
 __do_sys_mount fs/namespace.c:3602 [inline]
 __se_sys_mount fs/namespace.c:3579 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3579
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585