watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor:4697]
Modules linked in:
irq event stamp: 34744225
hardirqs last  enabled at (34744224): [<ffff800086892474>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:210 [inline]
hardirqs last  enabled at (34744224): [<ffff800086892474>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:221
hardirqs last disabled at (34744225): [<ffff80008686e0e0>] __el1_irq arch/arm64/kernel/entry-common.c:565 [inline]
hardirqs last disabled at (34744225): [<ffff80008686e0e0>] el1_interrupt+0x28/0x60 arch/arm64/kernel/entry-common.c:581
softirqs last  enabled at (1328458): [<ffff800084bbf780>] spin_unlock_bh include/linux/spinlock.h:407 [inline]
softirqs last  enabled at (1328458): [<ffff800084bbf780>] lock_sock_nested+0xb0/0x110 net/core/sock.c:3860
softirqs last disabled at (1328459): [<ffff8000800203f0>] __do_softirq+0x14/0x20 kernel/softirq.c:679
CPU: 0 UID: 0 PID: 4697 Comm: syz-executor Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:211 [inline]
pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:221
lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:210 [inline]
lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:221
sp : ffff80008f7c7dd0
x29: ffff80008f7c7dd0 x28: 1fffe000349f7832 x27: ffff0001a4fbc180
x26: ffff0001a4fbc190 x25: ffff0000f3a57938 x24: dfff800000000000
x23: 0000000000000001 x22: ffff800084e78bac x21: ffff0001a4fbbe40
x20: ffff0001a4fbbe40 x19: 0000000000000000 x18: 0000000000000000
x17: ffff80011b896000 x16: ffff80008f7c0000 x15: 0000000000000001
x14: 0000000002e33ced x13: 0000000000000001 x12: 0000000000000000
x11: ffff80008b229e28 x10: 0000000000000003 x9 : 0000000000000001
x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff8000801557cc
x2 : 0000000000000002 x1 : ffff0000da458000 x0 : ffff80011b896000
Call trace:
 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P)
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P)
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:210 [inline] (P)
 _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:221 (P)
 __run_hrtimer kernel/time/hrtimer.c:2070 [inline]
 __hrtimer_run_queues+0x228/0x998 kernel/time/hrtimer.c:2131
 hrtimer_run_softirq+0x1b4/0x2a8 kernel/time/hrtimer.c:2148
 handle_softirqs+0x324/0xcbc kernel/softirq.c:645
 __do_softirq+0x14/0x20 kernel/softirq.c:679
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:901
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
 do_softirq+0x90/0xf8 kernel/softirq.c:546
 __local_bh_enable_ip+0x190/0x234 kernel/softirq.c:473
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:237 [inline]
 _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:245
 spin_unlock_bh include/linux/spinlock.h:407 [inline]
 lock_sock_nested+0xb0/0x110 net/core/sock.c:3860
 lock_sock include/net/sock.h:1713 [inline]
 tcp_recvmsg+0x174/0x4d8 net/ipv4/tcp.c:2943
 inet_recvmsg+0xb8/0xd8 net/ipv4/af_inet.c:894
 sock_recvmsg_nosec net/socket.c:1151 [inline]
 sock_recvmsg+0xd4/0x170 net/socket.c:1173
 sock_read_iter+0x1d4/0x288 net/socket.c:1242
 new_sync_read fs/read_write.c:493 [inline]
 vfs_read+0x498/0x8c8 fs/read_write.c:574
 ksys_read+0x12c/0x228 fs/read_write.c:716
 __do_sys_read fs/read_write.c:725 [inline]
 __se_sys_read fs/read_write.c:723 [inline]
 __arm64_sys_read+0x84/0x98 fs/read_write.c:723
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:796
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:815
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle_call+0xa0/0xb8 kernel/sched/idle.c:129