watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz.2.4064:17990]
Modules linked in:
irq event stamp: 4507
hardirqs last  enabled at (4506): [<ffff8000111cd434>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline]
hardirqs last  enabled at (4506): [<ffff8000111cd434>] exit_to_kernel_mode+0xe0/0x168 arch/arm64/kernel/entry-common.c:91
hardirqs last disabled at (4507): [<ffff8000111cd68c>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (190): [<ffff80000f69c768>] spin_unlock_bh include/linux/spinlock.h:409 [inline]
softirqs last  enabled at (190): [<ffff80000f69c768>] release_sock+0x1d0/0x258 net/core/sock.c:3282
softirqs last disabled at (196): [<ffff80000f6acce8>] spin_lock_bh include/linux/spinlock.h:369 [inline]
softirqs last disabled at (196): [<ffff80000f6acce8>] lock_sock_nested+0xf4/0x1d4 net/core/sock.c:3259
CPU: 0 PID: 17990 Comm: syz.2.4064 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 02400005 (nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : queued_spin_lock_slowpath+0x13c/0x798 kernel/locking/qspinlock.c:382
lr : queued_spin_lock_slowpath+0x148/0x798 kernel/locking/qspinlock.c:382
sp : ffff800020397600
x29: ffff8000203976a0 x28: ffff8000140e1008 x27: 1fffe0001d96cc52
x26: 0000000000000001 x25: ffff0000cd91d1c0 x24: dfff800000000000
x23: ffff700004072ec4 x22: 1ffff00004072ee4 x21: ffff0000ecb66290
x20: ffff0000ecb66298 x19: ffff0000ecb66288 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082d5fa8 x15: 000000000000000a
x14: 0000000000ff0100 x13: 1ffff0000283206b x12: 0000000000000001
x11: 1fffe0001d96cc51 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000101 x7 : ffff80000f6acce8 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082d52ac
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]
 queued_spin_lock_slowpath+0x13c/0x798 kernel/locking/qspinlock.c:382
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock+0x2ec/0x2f0 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x11c/0x1b4 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:369 [inline]
 lock_sock_nested+0xf4/0x1d4 net/core/sock.c:3259
 lock_sock include/net/sock.h:1731 [inline]
 tipc_sendstream+0x50/0x84 net/tipc/socket.c:1549
 sock_sendmsg_nosec net/socket.c:706 [inline]
 __sock_sendmsg net/socket.c:718 [inline]
 ____sys_sendmsg+0x61c/0x920 net/socket.c:2446
 ___sys_sendmsg+0x1d0/0x240 net/socket.c:2500
 __sys_sendmsg net/socket.c:2529 [inline]
 __do_sys_sendmsg net/socket.c:2538 [inline]
 __se_sys_sendmsg net/socket.c:2536 [inline]
 __arm64_sys_sendmsg+0x1a8/0x254 net/socket.c:2536
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 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