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RBP: 00007f13a7611e19 R08: 0000000000000002 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f13a77b6128 R14: 00007f13a77b6090 R15: 00007fffa225ab48 </TASK> watchdog: BUG: soft lockup - CPU#0 stuck for 266s! [syz.2.1814:7294] Modules linked in: CPU: 0 PID: 7294 Comm: syz.2.1814 Not tainted 6.1.145-syzkaller-00002-gc750dc582629 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 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+0x3b/0x50 arch/x86/include/asm/apic.h:206 Code: 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 3a cc 56 01 5d c3 0f 1f 84 00 00 00 00 00 90 RSP: 0018:ffffc90000007740 EFLAGS: 00000246 RAX: 00000000000000f6 RBX: 00000000000000f6 RCX: 000000000000083f RDX: 0000000000000000 RSI: 00000000000000f6 RDI: 000000000000083f RBP: ffffc90000007740 R08: dffffc0000000000 R09: fffff52000000ee5 R10: 0000000000000000 R11: ffffffff81342080 R12: 0000000000000000 R13: 0000000000000001 R14: ffffffff86491b60 R15: dffffc0000000000 FS: 00007f13a83166c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000a50000 CR3: 0000000123474000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 0000000000000600 Call Trace: <IRQ> apic_write arch/x86/include/asm/apic.h:394 [inline] x2apic_send_IPI_self+0x6f/0x80 arch/x86/kernel/apic/x2apic_phys.c:155 arch_irq_work_raise+0x98/0xf0 arch/x86/kernel/irq_work.c:31 __irq_work_queue_local+0x115/0x190 kernel/irq_work.c:102 irq_work_queue+0x9e/0x150 kernel/irq_work.c:114 __kfence_alloc+0x220/0x360 mm/kfence/core.c:1026 kfence_alloc include/linux/kfence.h:128 [inline] slab_alloc_node mm/slub.c:3345 [inline] __kmem_cache_alloc_node+0x260/0x2c0 mm/slub.c:3462 __do_kmalloc_node mm/slab_common.c:937 [inline] __kmalloc_node_track_caller+0xa0/0x1e0 mm/slab_common.c:958 kmalloc_reserve net/core/skbuff.c:449 [inline] __alloc_skb+0x236/0x4b0 net/core/skbuff.c:518 alloc_skb include/linux/skbuff.h:1290 [inline] ndisc_alloc_skb net/ipv6/ndisc.c:423 [inline] ndisc_send_rs+0x304/0x870 net/ipv6/ndisc.c:707 addrconf_rs_timer+0x2c7/0x600 net/ipv6/addrconf.c:4011 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:generic_exec_single+0x2ac/0x3a0 kernel/smp.c:-1 Code: 74 71 e8 97 6e 09 00 43 0f b6 04 3e 84 c0 0f 85 c7 00 00 00 41 c7 04 24 00 00 00 00 bb fa ff ff ff eb 11 e8 76 6e 09 00 31 db <49> bf 00 00 00 00 00 fc ff df 48 c7 44 24 20 0e 36 e0 45 4b c7 44 RSP: 0018:ffffc90000a57a20 EFLAGS: 00000283 RAX: ffffffff8166939e RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc90002a3f000 RSI: 00000000000001de RDI: 00000000000001df RBP: ffffc90000a57ad0 R08: ffff88811affbcc0 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff81963300 R12: ffffc90000a57b28 R13: 1ffff9200014af48 R14: ffffc90000a57c60 R15: 0000000000000200 smp_call_function_single+0x1c5/0x470 kernel/smp.c:784 task_function_call kernel/events/core.c:120 [inline] perf_install_in_context+0x49a/0x730 kernel/events/core.c:2935 __do_sys_perf_event_open kernel/events/core.c:12721 [inline] __se_sys_perf_event_open+0x1281/0x1b80 kernel/events/core.c:12315 __x64_sys_perf_event_open+0xbf/0xd0 kernel/events/core.c:12315 x64_sys_call+0x385/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:299 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: 0033:0x7f13a758ebe9 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:00007f13a8316038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f13a77b6090 RCX: 00007f13a758ebe9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000000 RBP: 00007f13a7611e19 R08: 0000000000000002 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f13a77b6128 R14: 00007f13a77b6090 R15: 00007fffa225ab48 </TASK> Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1534 Comm: kworker/u4:6 Not tainted 6.1.145-syzkaller-00002-gc750dc582629 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:453 [inline] RIP: 0010:smp_call_function_many_cond+0x872/0x960 kernel/smp.c:998 Code: 41 8b 1f 89 de 83 e6 01 31 ff e8 39 66 09 00 83 e3 01 48 bb 00 00 00 00 00 fc ff df 75 0a e8 05 62 09 00 e9 38 ff ff ff f3 90 <41> 0f b6 44 1d 00 84 c0 75 14 41 f7 07 01 00 00 00 0f 84 1a ff ff RSP: 0018:ffffc900010e7840 EFLAGS: 00000293 RAX: ffffffff8166a09e RBX: dffffc0000000000 RCX: ffff88811ae69440 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900010e7978 R08: dffffc0000000000 R09: fffff5200021cef9 R10: 0000000000000000 R11: 1ffff9200021cef8 R12: 1ffff1103ee27218 R13: 1ffff1103ee07ae1 R14: 0000000000000000 R15: ffff8881f703d708 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdd13ae5000 CR3: 0000000006e0f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: <TASK> on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1166 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1574 [inline] text_poke_bp_batch+0x1cc/0x580 arch/x86/kernel/alternative.c:1774 text_poke_flush arch/x86/kernel/alternative.c:1965 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1972 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146 __jump_label_update+0x37c/0x3a0 kernel/jump_label.c:451 jump_label_update+0x39b/0x450 kernel/jump_label.c:797 static_key_enable_cpuslocked+0x126/0x240 kernel/jump_label.c:173 static_key_enable+0x1a/0x30 kernel/jump_label.c:186 toggle_allocation_gate+0xb4/0x400 mm/kfence/core.c:805 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302 worker_thread+0xa29/0x11f0 kernel/workqueue.c:2449 kthread+0x281/0x320 kernel/kthread.c:397 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK>
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025/08/11 17:35 | android14-6.1 | c750dc582629 | 32a0e5ed | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-1-perf | BUG: soft lockup in addrconf_rs_timer |