watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [udevd:3659]
Modules linked in:
irq event stamp: 2146972
hardirqs last  enabled at (2146971): [<ffff80000805b31c>] local_daif_restore arch/arm64/include/asm/daifflags.h:75 [inline]
hardirqs last  enabled at (2146971): [<ffff80000805b31c>] el0_svc_common+0x9c/0x258 arch/arm64/kernel/syscall.c:107
hardirqs last disabled at (2146972): [<ffff80001125d8fc>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (2146888): [<ffff800008031f94>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (2146886): [<ffff800008031f60>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
CPU: 0 PID: 3659 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : lock_acquire+0x234/0x618 arch/arm64/include/asm/irqflags.h:-1
lr : lockdep_recursion_finish kernel/locking/lockdep.c:436 [inline]
lr : lock_acquire+0x200/0x618 kernel/locking/lockdep.c:5625
sp : ffff8000229e79a0
x29: ffff8000229e7a00 x28: dfff800000000000 x27: 0000000000000000
x26: ffff0001a0f82d40 x25: ffff0000d5f4cbd8 x24: 0000000000000000
x23: ffff800008758eb0 x22: 0000000000000000 x21: ffff0000d6459b40
x20: ffff8000141f3d40 x19: ffff0001a0f82d40 x18: 0000000000000000
x17: 0000000000000000 x16: ffff80001125f0fc x15: ffff800011857240
x14: 0000000000000001 x13: 1ffff0000285402b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000080
x8 : 00000000000000c0 x7 : ffff800008758eb0 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : ffff8000113bc680 x0 : 0000000000000000
Call trace:
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
 lock_acquire+0x234/0x618 kernel/locking/lockdep.c:5626
 __might_fault+0xc8/0x128 mm/memory.c:5357
 filldir64+0x49c/0x9e4 fs/readdir.c:337
 dir_emit include/linux/fs.h:3714 [inline]
 kernfs_fop_readdir+0x4b8/0x760 fs/kernfs/dir.c:1743
 iterate_dir+0x1f0/0x4cc fs/readdir.c:-1
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64 fs/readdir.c:354 [inline]
 __arm64_sys_getdents64+0x11c/0x348 fs/readdir.c:354
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584