watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/u8:2:33] Modules linked in: irq event stamp: 2029101 hardirqs last enabled at (2029100): [] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:394 hardirqs last disabled at (2029101): [] __el1_irq arch/arm64/kernel/entry-common.c:557 [inline] hardirqs last disabled at (2029101): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:575 softirqs last enabled at (2029088): [] softirq_handle_end kernel/softirq.c:407 [inline] softirqs last enabled at (2029088): [] handle_softirqs+0xb44/0xd34 kernel/softirq.c:589 softirqs last disabled at (2029091): [] __do_softirq+0x14/0x20 kernel/softirq.c:595 CPU: 0 UID: 0 PID: 33 Comm: kworker/u8:2 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: events_unbound toggle_allocation_gate pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __sanitizer_cov_trace_pc+0x78/0x84 kernel/kcov.c:235 lr : fib6_check_expired include/net/ip6_fib.h:270 [inline] lr : __find_rr_leaf+0x19c/0x724 net/ipv6/route.c:809 sp : ffff800080006fb0 x29: ffff800080007120 x28: ffff0000cb7f6464 x27: 0000000000000000 x26: 0000000000000100 x25: dfff800000000000 x24: ffff8000800072a0 x23: 0000000000000001 x22: 0000000000000100 x21: 1fffe000196fec8c x20: ffff0000cb7f6400 x19: ffff8000800073f0 x18: ffff0000cd9448b8 x17: ffff800123e72000 x16: ffff80008069cc18 x15: 0000000000000005 x14: 1ffff00010000e18 x13: 0000000000000000 x12: ffff700010000e10 x11: 1ffff00010000e7f x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c1f15ac0 x7 : ffff8000800072d0 x6 : 0000000000000003 x5 : ffff8000800072d0 x4 : ffff8000800072c0 x3 : 0000000000000003 x2 : 000000000000003d x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __sanitizer_cov_trace_pc+0x78/0x84 kernel/kcov.c:233 (P) find_rr_leaf net/ipv6/route.c:856 [inline] rt6_select net/ipv6/route.c:900 [inline] fib6_table_lookup+0x36c/0x9c0 net/ipv6/route.c:2195 ip6_pol_route+0x228/0x1314 net/ipv6/route.c:2231 ip6_pol_route_input+0x74/0x94 net/ipv6/route.c:2288 pol_lookup_func include/net/ip6_fib.h:616 [inline] fib6_rule_lookup+0x1f8/0x510 net/ipv6/fib6_rules.c:117 ip6_route_input_lookup net/ipv6/route.c:2300 [inline] ip6_route_input+0x6b8/0xb34 net/ipv6/route.c:2596 ip6_rcv_finish_core+0x218/0x3c8 net/ipv6/ip6_input.c:66 ip6_rcv_finish+0x120/0x21c net/ipv6/ip6_input.c:77 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:314 ipv6_rcv+0x9c/0xbc net/ipv6/ip6_input.c:309 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x18c/0x3c8 net/core/dev.c:5817 process_backlog+0x640/0x123c net/core/dev.c:6149 __napi_poll+0xb4/0x3fc net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x6a8/0xf4c net/core/dev.c:7093 handle_softirqs+0x320/0xd34 kernel/softirq.c:561 __do_softirq+0x14/0x20 kernel/softirq.c:595 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:442 [inline] __irq_exit_rcu+0x1d8/0x544 kernel/softirq.c:662 irq_exit_rcu+0x14/0x84 kernel/softirq.c:678 __el1_irq arch/arm64/kernel/entry-common.c:561 [inline] el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:575 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:580 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:231 [inline] (P) __cmpwait arch/arm64/include/asm/cmpxchg.h:257 [inline] (P) csd_lock_wait kernel/smp.c:340 [inline] (P) smp_call_function_many_cond+0x19c8/0x32a8 kernel/smp.c:884 (P) smp_call_function_many kernel/smp.c:908 [inline] smp_call_function kernel/smp.c:930 [inline] kick_all_cpus_sync+0x40/0xa0 kernel/smp.c:1075 arch_jump_label_transform_apply+0x14/0x20 arch/arm64/kernel/jump_label.c:34 __jump_label_update+0x30c/0x334 kernel/jump_label.c:521 jump_label_update+0x30c/0x3bc kernel/jump_label.c:920 static_key_enable_cpuslocked+0x140/0x230 kernel/jump_label.c:210 static_key_enable+0x24/0x38 kernel/jump_label.c:223 toggle_allocation_gate+0xc4/0x264 mm/kfence/core.c:849 process_one_work+0x7a8/0x15cc kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3317 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3398 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Sending NMI from CPU 0 to CPUs 1: