watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.2:2006] Modules linked in: irq event stamp: 3337105 hardirqs last enabled at (3337104): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3337105): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (84742): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (84745): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (84745): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 2006 Comm: syz-executor.2 Not tainted 4.19.209-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:unwind_next_frame+0x7c2/0x1400 arch/x86/kernel/unwind_orc.c:441 Code: 0f 95 c6 40 84 f7 0f 85 59 09 00 00 83 e0 07 38 c2 40 0f 9e c6 84 d2 0f 95 c0 40 84 c6 0f 85 42 09 00 00 49 0f bf 07 48 01 c8 <48> 89 44 24 68 e9 a8 fe ff ff 49 8d 7e 40 48 b8 00 00 00 00 00 fc RSP: 0018:ffff8880ba007788 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: ffff8880ba007d28 RBX: 1ffff11017400efa RCX: ffff8880ba007cf8 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000002 R08: ffffffff8bf7842a R09: ffffffff8bf78426 R10: ffff8880ba007917 R11: 0000000000074071 R12: ffff8880ba007900 R13: ffff8880ba0078ed R14: ffff8880ba0078b8 R15: ffffffff8bf78426 FS: 00007fd1a238f700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb4bf4b51b8 CR3: 000000002540b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 kmem_cache_alloc_node+0x146/0x3b0 mm/slab.c:3649 __alloc_skb+0x71/0x560 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] mrp_pdu_init net/802/mrp.c:316 [inline] mrp_pdu_append_vecattr_event+0x7d2/0x1050 net/802/mrp.c:415 mrp_attr_event+0x15d/0x220 net/802/mrp.c:510 mrp_mad_event net/802/mrp.c:590 [inline] mrp_join_timer+0x5a/0xc0 net/802/mrp.c:607 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:preempt_schedule_irq+0xa6/0x140 kernel/sched/core.c:3744 Code: 00 00 e8 ad 13 29 f9 e8 c8 4e 4f f9 4c 89 e8 48 c1 e8 03 80 3c 18 00 75 69 48 83 3d 0b 28 d9 01 00 74 5b fb 66 0f 1f 44 00 00 01 00 00 00 e8 40 d1 ff ff 48 c7 c0 90 82 f1 89 48 c1 e8 03 80 RSP: 0018:ffff88804697f5a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3053 RBX: dffffc0000000000 RCX: 1ffff11004d20dc2 RDX: 0000000000000000 RSI: ffff888026906df0 RDI: ffff888026906dc4 RBP: ffffed1004d20ca8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888026906540 R13: ffffffff89f18298 R14: 0000000000000000 R15: 0000000000000000 retint_kernel+0x1b/0x2d RIP: 0010:should_resched arch/x86/include/asm/preempt.h:99 [inline] RIP: 0010:__local_bh_enable_ip+0x18d/0x270 kernel/softirq.c:196 Code: 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 dd 00 00 00 48 83 3d c8 5f b8 08 00 0f 84 8d 00 00 00 fb 66 0f 1f 44 00 00 <65> 8b 05 6c bc c8 7e 85 c0 74 7d 5b 5d 41 5c c3 80 3d 73 87 d5 09 RSP: 0018:ffff88804697f670 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3053 RBX: 0000000000000200 RCX: 1ffff11004d20dc2 RDX: dffffc0000000000 RSI: ffff888026906df0 RDI: ffff888026906dc4 RBP: ffffffff86a42da2 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888026906540 R13: 00000000000007e7 R14: 0000000000000000 R15: 0000000000000001 local_bh_enable include/linux/bottom_half.h:32 [inline] get_next_corpse net/netfilter/nf_conntrack_core.c:1907 [inline] nf_ct_iterate_cleanup+0x239/0x520 net/netfilter/nf_conntrack_core.c:1930 nf_ct_iterate_cleanup_net net/netfilter/nf_conntrack_core.c:2015 [inline] nf_ct_iterate_cleanup_net+0x113/0x170 net/netfilter/nf_conntrack_core.c:2000 masq_inet_event+0xf6/0x130 net/ipv4/netfilter/nf_nat_masquerade_ipv4.c:137 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 __blocking_notifier_call_chain kernel/notifier.c:317 [inline] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] blocking_notifier_call_chain kernel/notifier.c:328 [inline] blocking_notifier_call_chain+0x85/0xa0 kernel/notifier.c:325 __inet_del_ifa+0x534/0xba0 net/ipv4/devinet.c:416 inet_del_ifa net/ipv4/devinet.c:446 [inline] devinet_ioctl+0x95e/0x1b40 net/ipv4/devinet.c:1167 inet_ioctl+0x1ea/0x360 net/ipv4/af_inet.c:954 sock_do_ioctl+0xce/0x300 net/socket.c:1015 sock_ioctl+0x2ef/0x5d0 net/socket.c:1135 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd1a4e188d9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd1a238f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd1a4f1cf60 RCX: 00007fd1a4e188d9 RDX: 0000000020000080 RSI: 0000000000008918 RDI: 0000000000000006 RBP: 00007fd1a4e72cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc501127df R14: 00007fd1a238f300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 ---------------- Code disassembly (best guess): 0: 0f 95 c6 setne %dh 3: 40 84 f7 test %sil,%dil 6: 0f 85 59 09 00 00 jne 0x965 c: 83 e0 07 and $0x7,%eax f: 38 c2 cmp %al,%dl 11: 40 0f 9e c6 setle %sil 15: 84 d2 test %dl,%dl 17: 0f 95 c0 setne %al 1a: 40 84 c6 test %al,%sil 1d: 0f 85 42 09 00 00 jne 0x965 23: 49 0f bf 07 movswq (%r15),%rax 27: 48 01 c8 add %rcx,%rax * 2a: 48 89 44 24 68 mov %rax,0x68(%rsp) <-- trapping instruction 2f: e9 a8 fe ff ff jmpq 0xfffffedc 34: 49 8d 7e 40 lea 0x40(%r14),%rdi 38: 48 rex.W 39: b8 00 00 00 00 mov $0x0,%eax 3e: 00 fc add %bh,%ah