watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:9521] Modules linked in: irq event stamp: 4197695 hardirqs last enabled at (4197694): [<ffffffff87400976>] restore_regs_and_return_to_kernel+0x0/0x2a hardirqs last disabled at (4197695): [<ffffffff874018ae>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (58684): [<ffffffff8760068b>] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (59865): [<ffffffff81321cf3>] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (59865): [<ffffffff81321cf3>] irq_exit+0x193/0x240 kernel/softirq.c:409 CPU: 0 PID: 9521 Comm: syz-executor.2 Not tainted 4.14.277-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880701ea1c0 task.stack: ffff8880701f0000 RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1186 [inline] RIP: 0010:rcu_lockdep_current_cpu_online+0x5b/0x140 kernel/rcu/tree.c:1177 RSP: 0018:ffff8880ba407410 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000000 RBX: 0000000000035280 RCX: 1ffffffff11993ac RDX: dffffc0000000000 RSI: ffffffff87ccff80 RDI: ffffffff88cc9d60 RBP: ffff8880971ae480 R08: 0000000000000000 R09: 0000000000022012 R10: ffff8880701eab38 R11: ffff8880701ea1c0 R12: 0000000000000001 R13: 0000000000000000 R14: ffff88809f12f592 R15: ffff888098ac5d80 FS: 00007faadee07700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d72f000 CR3: 00000000a97fd000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> rcu_read_lock_held+0xc3/0x110 kernel/rcu/update.c:330 batadv_primary_if_get_selected net/batman-adv/hard-interface.h:100 [inline] batadv_bla_tx+0x810/0x2640 net/batman-adv/bridge_loop_avoidance.c:2055 batadv_interface_tx+0x3ef/0x11c0 net/batman-adv/soft-interface.c:239 __netdev_start_xmit include/linux/netdevice.h:4054 [inline] netdev_start_xmit include/linux/netdevice.h:4063 [inline] xmit_one net/core/dev.c:3005 [inline] dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521 neigh_resolve_output+0x4e5/0x870 net/core/neighbour.c:1369 neigh_output include/net/neighbour.h:500 [inline] ip6_finish_output2+0xf48/0x1f10 net/ipv6/ip6_output.c:120 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 </IRQ> RIP: 0010:page_outside_zone_boundaries+0x1c8/0x310 mm/page_alloc.c:500 RSP: 0018:ffff8880701f73f8 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000000 RBX: ffff88813fffb6c0 RCX: 00000000000ff000 RDX: 0000000000100000 RSI: 00000000000a506e RDI: ffff88813fffb730 RBP: dffffc0000000000 R08: 0000000000001000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: fffffbfff11e1310 R14: 1ffffffff11e1312 R15: ffff88813fffb750 bad_range mm/page_alloc.c:525 [inline] rmqueue mm/page_alloc.c:2857 [inline] get_page_from_freelist+0xaf6/0x25a0 mm/page_alloc.c:3173 __alloc_pages_nodemask+0x365/0x2720 mm/page_alloc.c:4185 alloc_pages_current+0x155/0x260 mm/mempolicy.c:2107 alloc_pages include/linux/gfp.h:520 [inline] __get_free_pages+0xb/0x40 mm/page_alloc.c:4233 tlb_next_batch mm/memory.c:217 [inline] __tlb_remove_page_size+0x272/0x440 mm/memory.c:329 __tlb_remove_page include/asm-generic/tlb.h:152 [inline] zap_pte_range mm/memory.c:1378 [inline] zap_pmd_range mm/memory.c:1479 [inline] zap_pud_range mm/memory.c:1508 [inline] zap_p4d_range mm/memory.c:1529 [inline] unmap_page_range+0xf94/0x1d90 mm/memory.c:1550 unmap_single_vma+0x147/0x2b0 mm/memory.c:1595 unmap_vmas+0x9d/0x160 mm/memory.c:1625 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: 0033:0x7faae04920e9 RSP: 002b:00007faadee07218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007faae05a4f68 RCX: 00007faae04920e9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007faae05a4f68 RBP: 00007faae05a4f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007faae05a4f6c R13: 00007fff9722f7ef R14: 00007faadee07300 R15: 0000000000022000 Code: e8 eb 48 d3 01 48 c7 c3 80 52 03 00 48 ba 00 00 00 00 00 fc ff df 89 c0 48 8d 3c c5 60 9d cc 88 48 89 f9 48 c1 e9 03 80 3c 11 00 <0f> 85 a5 00 00 00 48 03 1c c5 60 9d cc 88 48 b8 00 00 00 00 00 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 4.14.277-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events netstamp_clear task: ffff8880b54b64c0 task.stack: ffff8880b54c0000 RIP: 0010:__read_once_size include/linux/compiler.h:185 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x181/0x370 kernel/smp.c:302 RSP: 0018:ffff8880b54c7a40 EFLAGS: 00000297 RAX: ffff8880b54b64c0 RBX: 1ffff11016a98f4c RCX: 1ffff11016a96dc1 RDX: 0000000000000000 RSI: ffff8880b54b6de8 RDI: 0000000000000286 RBP: ffff8880b54c7af0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005604a553ab08 CR3: 00000000a1a0a000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smp_call_function_many+0x60f/0x7a0 kernel/smp.c:434 smp_call_function kernel/smp.c:492 [inline] on_each_cpu+0x40/0x210 kernel/smp.c:602 text_poke_bp+0x90/0x110 arch/x86/kernel/alternative.c:796 __jump_label_transform+0x269/0x300 arch/x86/kernel/jump_label.c:102 arch_jump_label_transform+0x26/0x40 arch/x86/kernel/jump_label.c:110 __jump_label_update+0x113/0x170 kernel/jump_label.c:374 jump_label_update kernel/jump_label.c:741 [inline] jump_label_update+0x140/0x2d0 kernel/jump_label.c:720 static_key_enable_cpuslocked+0xf9/0x170 kernel/jump_label.c:141 static_key_enable+0x16/0x20 kernel/jump_label.c:154 netstamp_clear+0x2e/0x50 net/core/dev.c:1752 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: cd 08 00 48 8b 54 24 10 4c 89 e9 8b 7c 24 1c 48 8d 74 24 40 e8 71 fa ff ff 41 89 c4 8b 44 24 58 a8 01 74 0f e8 b1 cd 08 00 f3 90 <8b> 44 24 58 a8 01 75 f1 e8 a2 cd 08 00 e8 9d cd 08 00 bf 01 00 ---------------- Code disassembly (best guess): 0: e8 eb 48 d3 01 callq 0x1d348f0 5: 48 c7 c3 80 52 03 00 mov $0x35280,%rbx c: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 13: fc ff df 16: 89 c0 mov %eax,%eax 18: 48 8d 3c c5 60 9d cc lea -0x773362a0(,%rax,8),%rdi 1f: 88 20: 48 89 f9 mov %rdi,%rcx 23: 48 c1 e9 03 shr $0x3,%rcx 27: 80 3c 11 00 cmpb $0x0,(%rcx,%rdx,1) * 2b: 0f 85 a5 00 00 00 jne 0xd6 <-- trapping instruction 31: 48 03 1c c5 60 9d cc add -0x773362a0(,%rax,8),%rbx 38: 88 39: 48 rex.W 3a: b8 00 00 00 00 mov $0x0,%eax