------------[ cut here ]------------ WARNING: net/ipv4/af_inet.c:162 at inet_sock_destruct+0x554/0x650 net/ipv4/af_inet.c:162, CPU#1: rcu_exp_gp_kthr/18 Modules linked in: CPU: 1 UID: 0 PID: 18 Comm: rcu_exp_gp_kthr Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 pstate: 43400005 (nZcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : inet_sock_destruct+0x554/0x650 net/ipv4/af_inet.c:162 lr : inet_sock_destruct+0x554/0x650 net/ipv4/af_inet.c:162 sp : ffff80008eaf7c90 x29: ffff80008eaf7ca0 x28: 1fffe00018353751 x27: ffff0000ca262f88 x26: ffff0000c1a9ba88 x25: ffff0000ca262a80 x24: 1fffe0001944c562 x23: ffff0000ca262b10 x22: dfff800000000000 x21: ffff0000d5082740 x20: 0000000000000090 x19: ffff0000ca262d0c x18: 00000000ffffffff x17: ffff80008a74f000 x16: 0000000000000002 x15: ffff80008a2d8da0 x14: 00000000ffff8000 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff60001944c5a5 x9 : 0000000000000101 x8 : 0000000000000000 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000008 x3 : ffff8000854f4ee0 x2 : 0000000000000090 x1 : ffff0000c1a9ba80 x0 : 0000000000000000 Call trace: inet_sock_destruct+0x554/0x650 net/ipv4/af_inet.c:162 (P) udp_destruct_sock+0x28/0x38 net/ipv4/udp.c:1808 __sk_destruct+0x80/0x854 net/core/sock.c:2357 rcu_do_batch kernel/rcu/tree.c:2645 [inline] rcu_core+0x598/0xf04 kernel/rcu/tree.c:2897 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2914 handle_softirqs+0x2ec/0xd98 kernel/softirq.c:622 __do_softirq+0x14/0x20 kernel/softirq.c:656 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:889 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83 invoke_softirq kernel/softirq.c:503 [inline] __irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735 irq_exit_rcu+0x14/0x84 kernel/softirq.c:752 __el1_irq arch/arm64/kernel/entry-common.c:510 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:522 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:527 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:590 __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:178 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198 (P) __try_to_del_timer_sync+0xdc/0x114 kernel/time/timer.c:1467 __timer_delete_sync+0x134/0x1dc kernel/time/timer.c:1621 timer_delete_sync+0x24/0x34 kernel/time/timer.c:1676 schedule_timeout+0x144/0x28c kernel/time/sleep_timeout.c:100 synchronize_rcu_expedited_wait_once kernel/rcu/tree_exp.h:545 [inline] synchronize_rcu_expedited_wait kernel/rcu/tree_exp.h:663 [inline] rcu_exp_wait_wake kernel/rcu/tree_exp.h:692 [inline] rcu_exp_sel_wait_wake+0x784/0x1158 kernel/rcu/tree_exp.h:726 wait_rcu_exp_gp+0x38/0x48 kernel/rcu/tree_exp.h:492 kthread_worker_fn+0x420/0xd60 kernel/kthread.c:1025 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 irq event stamp: 86207 hardirqs last enabled at (86206): [] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline] hardirqs last enabled at (86206): [] arm64_exit_to_kernel_mode+0x80/0x94 arch/arm64/kernel/entry-common.c:62 hardirqs last disabled at (86207): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425 softirqs last enabled at (86066): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (86066): [] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650 softirqs last disabled at (86095): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]---