watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.2.1263:4763]
Modules linked in:
CPU: 1 PID: 4763 Comm: syz.2.1263 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025
RIP: 0010:ndisc_send_skb+0x8d5/0xcf0 net/ipv6/ndisc.c:518
Code: 51 04 5e fd f0 48 ff 43 18 49 81 c5 08 02 00 00 4c 89 e8 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 ef e8 8f 01 5e fd 49 8b 45 00 <65> 48 ff 40 18 e8 91 4b 06 fd 48 c7 84 24 a0 00 00 00 0e 36 e0 45
RSP: 0018:ffffc900001b0a00 EFLAGS: 00010246
RAX: 0000607e08c13940 RBX: ffff88810f2b6480 RCX: ffffffff84566c5f
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff88810f2b6498
RBP: ffffc900001b0be8 R08: dffffc0000000000 R09: ffffed1021e56c94
R10: ffffed1021e56c94 R11: 1ffff11021e56c93 R12: ffff888107c844e0
R13: ffff88810f09d988 R14: 0000000000000185 R15: dffffc0000000000
FS:  00007fba5e4496c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffdfa50000 CR3: 00000001172b0000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 ndisc_send_rs+0x670/0x870 net/ipv6/ndisc.c:723
 addrconf_rs_timer+0x2c7/0x600 net/ipv6/addrconf.c:4006
 call_timer_fn+0x46/0x2a0 kernel/time/timer.c:1510
 expire_timers kernel/time/timer.c:1555 [inline]
 __run_timers+0x639/0x9a0 kernel/time/timer.c:1826
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1839
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 __do_softirq kernel/softirq.c:680 [inline]
 invoke_softirq kernel/softirq.c:497 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:stack_trace_consume_entry+0xe6/0x290 kernel/stacktrace.c:93
Code: 53 00 4c 8b 55 d0 4d 89 f1 4c 8b 45 c8 4c 89 e2 4c 89 ff 48 8b 75 c0 4c 8b 37 45 8d 7a 01 0f b6 04 13 84 c0 0f 85 45 01 00 00 <45> 89 38 4f 8d 3c d6 4c 89 f8 48 c1 e8 03 80 3c 10 00 74 1e 4c 89
RSP: 0018:ffffc9000de76990 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff92001bced56 RCX: 000000000de76a00
RDX: dffffc0000000000 RSI: ffffffff81b4410a RDI: ffffc9000de76aa0
RBP: ffffc9000de769d8 R08: ffffc9000de76ab0 R09: ffffc9000de76aa8
R10: 0000000000000000 R11: 1ffff92001bced3d R12: ffffc9000de76aac
R13: 1ffff92001bced55 R14: ffffc9000de76b30 R15: 0000000000000001
 arch_stack_walk+0x118/0x150 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 __call_rcu_common kernel/rcu/tree.c:2807 [inline]
 call_rcu+0xd4/0xf90 kernel/rcu/tree.c:2926
 put_task_struct_rcu_user+0x5b/0x90 kernel/exit.c:233
 finish_task_switch+0x346/0x7b0 kernel/sched/core.c:5333
 context_switch kernel/sched/core.c:5423 [inline]
 __schedule+0xb8f/0x14e0 kernel/sched/core.c:6750
 preempt_schedule_irq+0x9b/0x110 kernel/sched/core.c:7062
 raw_irqentry_exit_cond_resched+0x29/0x30 kernel/entry/common.c:396
 irqentry_exit+0x37/0x40 kernel/entry/common.c:439
 sysvec_apic_timer_interrupt+0x64/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:stack_trace_consume_entry+0xa/0x290 kernel/stacktrace.c:83
Code: 1f 8c 03 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 b8 b6 63 6b ad 55 48 89 e5 41 57 41 56 41 55 <41> 54 53 48 83 ec 20 48 ba 00 00 00 00 00 fc ff df 4c 8d 47 10 4c
RSP: 0018:ffffc9000de77200 EFLAGS: 00000257
RAX: ffffffff81b4418b RBX: ffffc9000de772e0 RCX: 000000000de77200
RDX: ffffc9000de77301 RSI: ffffffff81b4418b RDI: ffffc9000de772e0
RBP: ffffc9000de77218 R08: ffffc9000de772f0 R09: ffffc9000de772e8
R10: 0000000000000000 R11: 1ffff92001bcee45 R12: ffff8881149dd100
R13: 0000000000000000 R14: ffffffff8160ce50 R15: ffffc9000de77228
 arch_stack_walk+0x118/0x150 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x31/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:241
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:249
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1745 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1771
 slab_free mm/slub.c:3686 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3702
 kfree+0x6f/0xf0 mm/slab_common.c:990
 kvfree+0x35/0x40 mm/util.c:639
 bpf_int_jit_compile+0xc122/0xd020 arch/x86/net/bpf_jit_comp.c:2597
 bpf_prog_select_runtime+0x8a8/0xbb0 kernel/bpf/core.c:2202
 bpf_prog_load+0x109c/0x15a0 kernel/bpf/syscall.c:2625
 __sys_bpf+0x504/0x780 kernel/bpf/syscall.c:5002
 __do_sys_bpf kernel/bpf/syscall.c:5106 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5104 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104
 x64_sys_call+0x488/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fba5d58ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fba5e449038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fba5d7c5fa0 RCX: 00007fba5d58ebe9
RDX: 0000000000000090 RSI: 00002000000000c0 RDI: 0000000000000005
RBP: 00007fba5d611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fba5d7c6038 R14: 00007fba5d7c5fa0 R15: 00007fff232cf338
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4764 Comm: syz.2.1263 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:230 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:254 [inline]
RIP: 0010:native_apic_msr_write+0x39/0x50 arch/x86/include/asm/apic.h:206
Code: 74 05 83 ff 30 75 12 5d c3 81 ff d0 00 00 00 74 f6 81 ff e0 00 00 00 74 ee c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 eb d9 89 f6 31 d2 e8 7a d6 56 01 5d c3 0f 1f 84 00 00 00 00
RSP: 0000:ffffc90000007df0 EFLAGS: 00000046
RAX: 00000000000001f3 RBX: 00000000000001f3 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 00000000000001f3 RDI: 0000000000000838
RBP: ffffc90000007df0 R08: ffff8881149d9440 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff81342080 R12: 0000000000000020
R13: dffffc0000000000 R14: ffffffff86492b60 R15: dffffc0000000000
FS:  00007fba5e4286c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffdfa50000 CR3: 00000001172b0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 apic_write arch/x86/include/asm/apic.h:394 [inline]
 lapic_next_event+0x70/0x80 arch/x86/kernel/apic/apic.c:478
 clockevents_program_event+0x1d9/0x330 kernel/time/clockevents.c:334
 tick_program_event+0xa3/0x120 kernel/time/tick-oneshot.c:44
 hrtimer_interrupt+0x501/0x8c0 kernel/time/hrtimer.c:1829
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x11e/0x440 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:dst_output include/net/dst.h:453 [inline]
RIP: 0010:NF_HOOK include/linux/netfilter.h:305 [inline]
RIP: 0010:ndisc_send_skb+0x7b8/0xcf0 net/ipv6/ndisc.c:513
Code: 8b 6c 24 38 48 8b 5c 24 78 74 08 48 89 df e8 bf 02 5e fd 4c 8b 33 49 83 e6 fe 49 83 c6 30 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 <74> 08 4c 89 f7 e8 9e 02 5e fd 4c 89 ef 48 8b 74 24 40 48 8b 54 24
RSP: 0000:ffffc90000a37940 EFLAGS: 00000246
RAX: 1ffff1102441647e RBX: ffff8881326ef698 RCX: ffff8881149d9440
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90000a37b28 R08: ffff8881149d9440 R09: 0000000000000003
R10: 0000000000000003 R11: 0000000000000100 R12: ffff888131bfa000
R13: ffff88810f09a300 R14: ffff8881220b23f0 R15: dffffc0000000000
 ndisc_send_rs+0x670/0x870 net/ipv6/ndisc.c:723
 addrconf_rs_timer+0x2c7/0x600 net/ipv6/addrconf.c:4006
 call_timer_fn+0x46/0x2a0 kernel/time/timer.c:1510
 expire_timers kernel/time/timer.c:1555 [inline]
 __run_timers+0x639/0x9a0 kernel/time/timer.c:1826
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1839
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 __do_softirq kernel/softirq.c:680 [inline]
 invoke_softirq kernel/softirq.c:497 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x58/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0033:0x7fba5d45eb45
Code: 48 8d 3d e8 6e 1d 00 31 c0 e8 b7 f6 fe ff 48 83 c4 68 5b 5d 41 5c 41 5e c3 0f 1f 40 00 48 8b 44 24 18 48 8b 1c 24 48 8b 70 70 <8b> 78 08 48 8d 53 30 e8 df 57 ff ff 48 89 83 88 00 00 00 e9 48 fe
RSP: 002b:00007fba5e428060 EFLAGS: 00000246
RAX: 00007fba5d69ef58 RBX: 00007fba5d7c6090 RCX: 00007fba5d6143fc
RDX: 8c597b9c383de39f RSI: 0000000000000000 RDI: 00007fba5e428588
RBP: 00007fba5d611e19 R08: 0000000000000081 R09: 003ab53eb43a3b18
R10: 00000043c9d1ae0c R11: 0000000000005bf2 R12: 0000000000000000
R13: 00007fba5d7c6128 R14: 00007fba5d7c6090 R15: 00007fff232cf338
 </TASK>