Bluetooth: hci2 command 0x0419 tx timeout IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.1:9442] Modules linked in: irq event stamp: 4491067 hardirqs last enabled at (4491066): [] slab_alloc_node mm/slab.c:3327 [inline] hardirqs last enabled at (4491066): [] kmem_cache_alloc_node_trace+0x2f0/0x400 mm/slab.c:3659 hardirqs last disabled at (4491067): [] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (13260): [] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (14911): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (14911): [] irq_exit+0x193/0x240 kernel/softirq.c:409 CPU: 0 PID: 9442 Comm: syz-executor.1 Not tainted 4.14.274-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809e8ba100 task.stack: ffff888091510000 RIP: 0010:unwind_get_return_address arch/x86/kernel/unwind_orc.c:252 [inline] RIP: 0010:unwind_get_return_address+0x6c/0x90 arch/x86/kernel/unwind_orc.c:247 RSP: 0018:ffff8880ba4073e8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: ffff8880ba407410 RCX: 0000000000000000 RDX: 1ffff11017480e8b RSI: ffff8880ba407300 RDI: ffffffff81003520 RBP: ffff8880ba407458 R08: 0000000000000001 R09: 0000000000000001 R10: ffff888091517ec0 R11: 0000000000000001 R12: ffff8880ba407498 R13: 0000000000000000 R14: ffff88813fe74940 R15: 0000000000000200 FS: 00007f4fdc046700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c5a9c56d28 CR3: 0000000008e6a000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __save_stack_trace+0xa0/0x160 arch/x86/kernel/stacktrace.c:45 save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 slab_post_alloc_hook mm/slab.h:442 [inline] slab_alloc_node mm/slab.c:3333 [inline] kmem_cache_alloc_node_trace+0x13d/0x400 mm/slab.c:3659 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3696 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0x96/0x510 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:980 [inline] nlmsg_new include/net/netlink.h:511 [inline] __neigh_notify+0x84/0x150 net/core/neighbour.c:2927 neigh_cleanup_and_release+0x71/0xc0 net/core/neighbour.c:106 neigh_del+0x161/0x1f0 net/core/neighbour.c:141 neigh_forced_gc net/core/neighbour.c:190 [inline] neigh_alloc net/core/neighbour.c:315 [inline] __neigh_create+0xc5d/0x19b0 net/core/neighbour.c:499 ip6_finish_output2+0x802/0x1f10 net/ipv6/ip6_output.c:117 ip6_finish_output+0x5c6/0xd50 net/ipv6/ip6_output.c:192 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x1c5/0x660 net/ipv6/ip6_output.c:209 dst_output include/net/dst.h:470 [inline] NF_HOOK include/linux/netfilter.h:250 [inline] ndisc_send_skb+0x82a/0x1390 net/ipv6/ndisc.c:483 ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677 addrconf_rs_timer+0x2bb/0x5a0 net/ipv6/addrconf.c:3769 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319 __run_timers kernel/time/timer.c:1637 [inline] run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:192 RSP: 0018:ffff888091517568 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e1309 RBX: 0000000000000286 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffffffff8c0a32c8 R08: ffffffff8b9aeba8 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888089800000 R13: 0000000000000000 R14: ffffffff8c0a32c8 R15: 0000000000000000 __debug_check_no_obj_freed lib/debugobjects.c:760 [inline] debug_check_no_obj_freed+0x2c0/0x680 lib/debugobjects.c:776 free_pages_prepare mm/page_alloc.c:1064 [inline] __free_pages_ok+0x215/0xeb0 mm/page_alloc.c:1262 release_pages+0x779/0xbf0 mm/swap.c:788 tlb_flush_mmu_free+0xc1/0x1a0 mm/memory.c:272 zap_pte_range mm/memory.c:1431 [inline] zap_pmd_range mm/memory.c:1466 [inline] zap_pud_range mm/memory.c:1495 [inline] zap_p4d_range mm/memory.c:1516 [inline] unmap_page_range+0x1533/0x1ce0 mm/memory.c:1537 unmap_single_vma+0x147/0x2b0 mm/memory.c:1582 unmap_vmas+0x9d/0x160 mm/memory.c:1612 exit_mmap+0x270/0x4d0 mm/mmap.c:3058 __mmput kernel/fork.c:931 [inline] mmput kernel/fork.c:952 [inline] mmput+0xfa/0x420 kernel/fork.c:947 exit_mm kernel/exit.c:548 [inline] do_exit+0x984/0x2850 kernel/exit.c:855 do_group_exit+0x100/0x2e0 kernel/exit.c:965 get_signal+0x38d/0x1ca0 kernel/signal.c:2412 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:792 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f4fdc8d1049 RSP: 002b:00007f4fdc046218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00007f4fdc9e3f68 RCX: 00007f4fdc8d1049 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f4fdc9e3f6c RBP: 00007f4fdc9e3f60 R08: 00000118ab2271f5 R09: 0000000000000000 R10: 0000000020ffc000 R11: 0000000000000246 R12: 00007f4fdc9e3f6c R13: 00007fff3459d38f R14: 00007f4fdc046300 R15: 0000000000022000 Code: 03 80 3c 02 00 75 32 48 8b 7b 48 e8 cf a7 13 00 85 c0 74 d3 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 75 18 <48> 8b 43 48 5b 5d c3 e8 08 85 5b 00 eb a8 48 89 ef e8 6e 85 5b Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 9480 Comm: syz-executor.4 Not tainted 4.14.274-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809b13a3c0 task.stack: ffff88809c920000 RIP: 0010:perf_event_fasync kernel/events/core.c:5568 [inline] RIP: 0010:perf_event_wakeup kernel/events/core.c:5578 [inline] RIP: 0010:perf_pending_event+0x1b7/0x260 kernel/events/core.c:5602 RSP: 0018:ffff8880ba507650 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffff8880ac3949b0 RCX: 1ffff110136275a2 RDX: 1ffff1101587290f RSI: 0000000000000006 RDI: ffff8880ac394878 RBP: 0000000000000002 R08: ffff8880ac394970 R09: 0000000000000005 R10: 0000000000000000 R11: ffff88809b13a3c0 R12: ffff8880ac3945c0 R13: ffff8880ac3949a4 R14: 0000000000000000 R15: 0000000000000001 FS: 00007feacf2db700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5e89092100 CR3: 000000009ea62000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: irq_work_run_list+0xf0/0x160 kernel/irq_work.c:156 irq_work_run+0x4e/0xc0 kernel/irq_work.c:171 smp_irq_work_interrupt+0xa3/0x4e0 arch/x86/kernel/irq_work.c:21 irq_work_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:824 RIP: 0010:__read_once_size include/linux/compiler.h:185 [inline] RIP: 0010:queued_write_lock_slowpath+0x80/0x1d0 kernel/locking/qrwlock.c:130 RSP: 0018:ffff8880ba5077b8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff09 RAX: 00000000000000ff RBX: ffffffff89d95d30 RCX: 00000000000026a5 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff89d95d30 RBP: ffffffff89d95d34 R08: ffffffff8b9b7fe8 R09: 00000000000421a4 R10: ffff88809b13ace8 R11: ffff88809b13a3c0 R12: fffffbfff13b2ba6 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8880abea7e00 queued_write_lock include/asm-generic/qrwlock.h:134 [inline] do_raw_write_lock+0xc2/0x1d0 kernel/locking/spinlock_debug.c:203 neigh_forced_gc net/core/neighbour.c:176 [inline] neigh_alloc net/core/neighbour.c:315 [inline] __neigh_create+0xb34/0x19b0 net/core/neighbour.c:499 ip6_finish_output2+0x802/0x1f10 net/ipv6/ip6_output.c:117 ip6_finish_output+0x5c6/0xd50 net/ipv6/ip6_output.c:192 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x1c5/0x660 net/ipv6/ip6_output.c:209 dst_output include/net/dst.h:470 [inline] NF_HOOK include/linux/netfilter.h:250 [inline] ndisc_send_skb+0x82a/0x1390 net/ipv6/ndisc.c:483 ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677 addrconf_rs_timer+0x2bb/0x5a0 net/ipv6/addrconf.c:3769 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319 __run_timers kernel/time/timer.c:1637 [inline] run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:lock_release+0x41e/0x870 kernel/locking/lockdep.c:4020 RSP: 0018:ffff88809c927708 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e1309 RBX: 1ffff11013924ee4 RCX: 1ffff1101362758e RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000286 RBP: ffff88809b13a3c0 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: ffff88809b13a3c0 R12: a37942f0b34f8a69 R13: 0000000000000003 R14: ffff88809b13a3c0 R15: 0000000000000002 page_remove_rmap+0x96/0xe0 mm/rmap.c:1293 zap_pte_range mm/memory.c:1364 [inline] zap_pmd_range mm/memory.c:1466 [inline] zap_pud_range mm/memory.c:1495 [inline] zap_p4d_range mm/memory.c:1516 [inline] unmap_page_range+0xf3f/0x1ce0 mm/memory.c:1537 unmap_single_vma+0x147/0x2b0 mm/memory.c:1582 unmap_vmas+0x9d/0x160 mm/memory.c:1612 exit_mmap+0x270/0x4d0 mm/mmap.c:3058 __mmput kernel/fork.c:931 [inline] mmput kernel/fork.c:952 [inline] mmput+0xfa/0x420 kernel/fork.c:947 exit_mm kernel/exit.c:548 [inline] do_exit+0x984/0x2850 kernel/exit.c:855 do_group_exit+0x100/0x2e0 kernel/exit.c:965 get_signal+0x38d/0x1ca0 kernel/signal.c:2412 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:792 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7feacfb66049 RSP: 002b:00007feacf2db218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00007feacfc78f68 RCX: 00007feacfb66049 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007feacfc78f6c RBP: 00007feacfc78f60 R08: 00000118bbb136f4 R09: 0000000000000000 R10: 0000000020ffc000 R11: 0000000000000246 R12: 00007feacfc78f6c R13: 00007fffdafa046f R14: 00007feacf2db300 R15: 0000000000022000 Code: f0 ff 48 8d bb c8 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 a3 00 00 00 4c 8b b3 c8 fe ff ff <4d> 85 f6 4d 0f 44 f4 e8 3d 7a f0 ff 44 89 fa be 1d 00 00 00 49 ---------------- Code disassembly (best guess): 0: 03 80 3c 02 00 75 add 0x7500023c(%rax),%eax 6: 32 48 8b xor -0x75(%rax),%cl 9: 7b 48 jnp 0x53 b: e8 cf a7 13 00 callq 0x13a7df 10: 85 c0 test %eax,%eax 12: 74 d3 je 0xffffffe7 14: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1b: fc ff df 1e: 48 89 ea mov %rbp,%rdx 21: 48 c1 ea 03 shr $0x3,%rdx 25: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 29: 75 18 jne 0x43 * 2b: 48 8b 43 48 mov 0x48(%rbx),%rax <-- trapping instruction 2f: 5b pop %rbx 30: 5d pop %rbp 31: c3 retq 32: e8 08 85 5b 00 callq 0x5b853f 37: eb a8 jmp 0xffffffe1 39: 48 89 ef mov %rbp,%rdi 3c: e8 .byte 0xe8 3d: 6e outsb %ds:(%rsi),(%dx) 3e: 85 .byte 0x85 3f: 5b pop %rbx