watchdog: BUG: soft lockup - CPU#2 stuck for 123s! [syz-executor.1:7957] Modules linked in: irq event stamp: 5207261 hardirqs last enabled at (5207260): [] trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41 hardirqs last disabled at (5207261): [] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42 softirqs last enabled at (811174): [] __do_softirq+0x6cd/0x98c kernel/softirq.c:319 softirqs last disabled at (811389): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (811389): [] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 CPU: 2 PID: 7957 Comm: syz-executor.1 Not tainted 5.4.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:icmpv6_flow_init+0x0/0x240 net/ipv6/icmp.c:974 Code: ff ff 48 89 cf e8 10 af f9 fa e9 4c fb ff ff be 04 00 00 00 4c 89 ef e8 1e b0 f9 fa e9 0d f8 ff ff 66 0f 1f 84 00 00 00 00 00 <55> 48 89 e5 41 57 49 89 ff 41 56 41 89 d6 41 55 49 89 cd 41 54 49 RSP: 0018:ffff88802d409a98 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8880709dc140 RBX: ffff88802215fc38 RCX: ffff88802d409c90 RDX: 0000000000000085 RSI: ffff88802d409b10 RDI: ffff8880132ace80 RBP: ffff88802d409be0 R08: ffffffff88c0b580 R09: 0000000000000023 R10: ffffed100442bf88 R11: ffff88802215fc47 R12: ffff8880212300c0 R13: ffff8880139ec040 R14: ffff88802d409c90 R15: ffff888071c78000 FS: 00007fad5f737700(0000) GS:ffff88802d400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3aa0f4edb8 CR3: 0000000070da3000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ndisc_send_rs+0x134/0x720 net/ipv6/ndisc.c:699 addrconf_rs_timer+0x30f/0x6e0 net/ipv6/addrconf.c:3879 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline] RIP: 0010:_raw_spin_unlock_irq+0x4f/0x80 kernel/locking/spinlock.c:199 Code: c0 68 34 53 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d 12 2a 99 01 00 74 20 fb 66 0f 1f 44 00 00 01 00 00 00 e8 e7 6b 96 f9 65 8b 05 18 14 48 78 85 c0 74 06 41 RSP: 0018:ffff8880709e78d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a668d RBX: ffff8880709dc140 RCX: 0000000000000006 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff8880709dc9d4 RBP: ffff8880709e78e0 R08: 1ffffffff15d29b8 R09: fffffbfff15d29b9 R10: fffffbfff15d29b8 R11: ffffffff8ae94dc7 R12: ffff88802d437380 R13: ffff88802c4bc3c0 R14: ffff888022cd0340 R15: 0000000000000000 finish_lock_switch kernel/sched/core.c:3124 [inline] finish_task_switch+0x147/0x750 kernel/sched/core.c:3224 context_switch kernel/sched/core.c:3388 [inline] __schedule+0x8e9/0x1f30 kernel/sched/core.c:4081 preempt_schedule_common+0x4f/0xe0 kernel/sched/core.c:4236 preempt_schedule+0x4b/0x60 kernel/sched/core.c:4261 ___preempt_schedule+0x16/0x18 arch/x86/entry/thunk_64.S:50 smp_call_function_single+0x410/0x480 kernel/smp.c:313 task_function_call+0xe9/0x180 kernel/events/core.c:114 perf_install_in_context+0x308/0x5a0 kernel/events/core.c:2746 __do_sys_perf_event_open+0x1cbc/0x2c70 kernel/events/core.c:11543 __se_sys_perf_event_open kernel/events/core.c:11151 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:11151 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a759 Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fad5f736c88 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000071bfa8 RCX: 000000000045a759 RDX: ffbfffffffffffff RSI: 0000000000000000 RDI: 0000000020000040 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fad5f7376d4 R13: 00000000004aec2b R14: 00000000006f1ca8 R15: 00000000ffffffff Sending NMI from CPU 2 to CPUs 0-1,3: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 NMI backtrace for cpu 3 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.116 msecs NMI backtrace for cpu 0 CPU: 0 PID: 7948 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:747 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:769 [inline] RIP: 0010:__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] RIP: 0010:_raw_spin_lock_irqsave+0x36/0xcd kernel/locking/spinlock.c:159 Code: 00 00 00 fc ff df 48 c1 e8 03 48 89 e5 41 55 41 54 80 3c 10 00 49 89 fc 0f 85 84 00 00 00 48 83 3d de 22 99 01 00 74 76 9c 58 <0f> 1f 44 00 00 48 ba 00 00 00 00 00 fc ff df 49 89 c5 48 c7 c0 60 RSP: 0018:ffff88802d209428 EFLAGS: 00000082 RAX: 0000000000000082 RBX: 0000000000000000 RCX: ffffffff81654421 RDX: dffffc0000000000 RSI: ffffffff8165442e RDI: ffff88802d2293c0 RBP: ffff88802d209438 R08: ffff888070e3c0c0 R09: ffffed1005a47045 R10: ffffed1005a47044 R11: ffff88802d238223 R12: ffff88802d2293c0 R13: 0000000000000000 R14: ffff88802d2293c0 R15: 0000000000000000 FS: 00007f3aa0fb2700(0000) GS:ffff88802d200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000071c000 CR3: 00000000712e0000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hrtimer_interrupt+0xff/0x770 kernel/time/hrtimer.c:1619 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:in_task_stack+0x31/0x40 arch/x86/kernel/dumpstack.c:39 Code: 00 80 00 00 48 39 f8 77 21 48 39 f9 76 1c 48 89 42 08 b8 01 00 00 00 c7 02 01 00 00 00 48 89 4a 10 48 c7 42 18 00 00 00 00 c3 <31> c0 c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 54 49 RSP: 0018:ffff88802d2095e0 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13 RAX: ffff888070e40000 RBX: ffff88802d209668 RCX: ffff888070e48000 RDX: ffff88802d209668 RSI: ffff888070e3c0c0 RDI: ffff88802d209658 RBP: ffff88802d209608 R08: ffff88802d209690 R09: ffff88802d209668 R10: ffffed1005a412d8 R11: ffff88802d2096c7 R12: ffff88802d209658 R13: ffff888070e3c0c0 R14: ffff88802d209688 R15: ffff88802d209668 __unwind_start+0x17e/0x3d0 arch/x86/kernel/unwind_frame.c:398 unwind_start arch/x86/include/asm/unwind.h:60 [inline] arch_stack_walk+0x5e/0xf0 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0xac/0xe0 kernel/stacktrace.c:123 save_stack+0x23/0x90 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_kmalloc mm/kasan/common.c:510 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:483 kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:518 slab_post_alloc_hook mm/slab.h:584 [inline] slab_alloc_node mm/slab.c:3262 [inline] kmem_cache_alloc_node_trace+0x143/0x750 mm/slab.c:3592 __do_kmalloc_node mm/slab.c:3614 [inline] __kmalloc_node_track_caller+0x3d/0x70 mm/slab.c:3629 __kmalloc_reserve.isra.0+0x40/0xf0 net/core/skbuff.c:141 __alloc_skb+0x10b/0x5e0 net/core/skbuff.c:209 alloc_skb include/linux/skbuff.h:1049 [inline] new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1372 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline] RIP: 0010:_raw_spin_unlock_irq+0x4f/0x80 kernel/locking/spinlock.c:199 Code: c0 68 34 53 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d 12 2a 99 01 00 74 20 fb 66 0f 1f 44 00 00 01 00 00 00 e8 e7 6b 96 f9 65 8b 05 18 14 48 78 85 c0 74 06 41 RSP: 0018:ffff888070e478d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a668d RBX: ffff888070e3c0c0 RCX: 0000000000000006 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff888070e3c954 RBP: ffff888070e478e0 R08: 1ffffffff15d29b8 R09: fffffbfff15d29b9 R10: fffffbfff15d29b8 R11: ffffffff8ae94dc7 R12: ffff88802d237380 R13: ffffffff8947a1c0 R14: ffff888022cd0340 R15: 0000000000000000 finish_lock_switch kernel/sched/core.c:3124 [inline] finish_task_switch+0x147/0x750 kernel/sched/core.c:3224 context_switch kernel/sched/core.c:3388 [inline] __schedule+0x8e9/0x1f30 kernel/sched/core.c:4081 preempt_schedule_common+0x4f/0xe0 kernel/sched/core.c:4236 preempt_schedule+0x4b/0x60 kernel/sched/core.c:4261 ___preempt_schedule+0x16/0x18 arch/x86/entry/thunk_64.S:50 smp_call_function_single+0x410/0x480 kernel/smp.c:313 task_function_call+0xe9/0x180 kernel/events/core.c:114 perf_install_in_context+0x308/0x5a0 kernel/events/core.c:2746 __do_sys_perf_event_open+0x1cbc/0x2c70 kernel/events/core.c:11543 __se_sys_perf_event_open kernel/events/core.c:11151 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:11151 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a759 Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3aa0fb1c88 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000071bf00 RCX: 000000000045a759 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 000000002001d000 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f3aa0fb26d4 R13: 00000000004aec2b R14: 00000000006f1ca8 R15: 00000000ffffffff