watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.1.837:5437]
Modules linked in:
CPU: 0 PID: 5437 Comm: syz.1.837 Tainted: G        W         5.10.222-syzkaller-01494-gfd58936f3c1f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:skb_page_frag_refill+0x11b/0x410 net/core/sock.c:2513
Code: d8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 93 02 00 00 8b 1b 44 89 ff 89 de e8 c2 14 ad fd 41 39 df 44 8b 6d d4 0f 86 a7 00 00 00 <48> b8 00 00 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 e7 e8 ec
RSP: 0018:ffffc90000007b10 EFLAGS: 00000206
RAX: 0000000000000101 RBX: 0000000000008000 RCX: dffffc0000000000
RDX: ffff8881140862c0 RSI: 0000000000008000 RDI: 0000000000008600
RBP: ffffc90000007b40 R08: ffffffff83bd95be R09: fffff940009ca2c7
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810adf4208
R13: 0000000000000a20 R14: 1ffff110215be841 R15: 0000000000008600
FS:  00007fa86fcdd6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555678d4a8 CR3: 000000011d3bb000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 add_recvbuf_mergeable drivers/net/virtio_net.c:1278 [inline]
 try_fill_recv+0x508/0x15a0 drivers/net/virtio_net.c:1319
 virtnet_receive drivers/net/virtio_net.c:1433 [inline]
 virtnet_poll+0x7f3/0x11f0 drivers/net/virtio_net.c:1530
 napi_poll net/core/dev.c:6854 [inline]
 net_rx_action+0x516/0x10d0 net/core/dev.c:6924
 __do_softirq+0x268/0x5bb kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:preempt_schedule_irq+0xc2/0x140 kernel/sched/core.c:5065
Code: 4c 89 e7 e8 90 2a f7 fc f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 54 f7 97 fc fb bf 01 00 00 00 <e8> 89 e6 ff ff fa bf 01 00 00 00 e8 de f8 97 fc 65 48 8b 1d 06 57
RSP: 0018:ffffc90000d47620 EFLAGS: 00000246
RAX: 1ffff11022810d9e RBX: 1ffff920001a8ec8 RCX: ffffffff84b23e00
RDX: 1ffffffff0e10800 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000d476a0 R08: ffffffff87084008 R09: ffffffff87084018
R10: ffffffff87084010 R11: ffffffff87084003 R12: ffffc90000d47640
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920001a8ec4
 irqentry_exit_cond_resched kernel/entry/common.c:365 [inline]
 irqentry_exit+0x4f/0x60 kernel/entry/common.c:395
 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:39
Code: 4c 89 f7 e8 ce c4 a7 00 eb bb 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 48 89 e5 e8 07 2d 6a 00 48 c7 c0 20 4b 00 85 5d c3 cc cc <55> 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 76 96 b0 03
RSP: 0018:ffffc90000d47798 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8711e560 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffffc90000d47890 R08: dffffc0000000000 R09: ffffed10233fcc5d
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920001a8efc
R13: dffffc0000000000 R14: ffffc90000d47800 R15: ffffffff8711e578
 process_notifier+0x599/0x650 drivers/misc/uid_sys_stats.c:651
 notifier_call_chain kernel/notifier.c:83 [inline]
 blocking_notifier_call_chain+0xbb/0x140 kernel/notifier.c:337
 profile_task_exit+0x1e/0x30 kernel/profile.c:151
 do_exit+0x193/0x2a50 kernel/exit.c:800
 do_group_exit+0x141/0x310 kernel/exit.c:985
 get_signal+0x10a0/0x1410 kernel/signal.c:2782
 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 irqentry_exit_to_user_mode+0x4e/0x80 kernel/entry/common.c:287
 irqentry_exit+0x12/0x60 kernel/entry/common.c:375
 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0033:0x7fa87105d9f9
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:00007fa86fcdd0e8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007fa8711ebf88 RCX: 00007fa87105d9f9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa8711ebf88
RBP: 00007fa8711ebf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa8711ebf8c
R13: 0000000000000000 R14: 00007fff234bb1b0 R15: 00007fff234bb298
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5438 Comm: syz.0.836 Tainted: G        W         5.10.222-syzkaller-01494-gfd58936f3c1f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0x90 kernel/kcov.c:283
Code: 08 03 00 00 00 48 89 44 0a 10 48 89 74 0a 18 4c 89 44 0a 20 49 ff c1 4c 89 09 5d c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <55> 48 89 e5 4c 8b 45 08 65 48 8b 15 c0 c0 97 7e 65 8b 05 c5 c0 97
RSP: 0018:ffffc90000170940 EFLAGS: 00000046
RAX: 0000000000010102 RBX: 0000000000000000 RCX: ffff88811ed93b40
RDX: ffff88811ed93b40 RSI: 00000000000000f0 RDI: 0000000000000000
RBP: ffffc900001709b8 R08: ffffffff815b0250 R09: ffff88810ac90160
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000000000f0
R13: ffff8881f7149940 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f37214b8d3e CR3: 0000000133849000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 hrtimer_update_next_event kernel/time/hrtimer.c:604 [inline]
 hrtimer_interrupt+0x3de/0x8b0 kernel/time/hrtimer.c:1712
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1083 [inline]
 __sysvec_apic_timer_interrupt+0xfd/0x3c0 arch/x86/kernel/apic/apic.c:1100
 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline]
 sysvec_apic_timer_interrupt+0xba/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:read_pnet include/net/net_namespace.h:335 [inline]
RIP: 0010:dev_net include/linux/netdevice.h:2396 [inline]
RIP: 0010:ndisc_alloc_skb+0x9e/0x2d0 net/ipv6/ndisc.c:418
Code: 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 e3 01 00 00 41 83 e4 f0 45 0f b7 ae 34 02 00 00 4d 8d be f8 04 00 00 4c 89 f8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ff e8 84 2f 7b fd bb 08 09 00 00 49 03 1f
RSP: 0018:ffffc90000170be8 EFLAGS: 00000a06
RAX: 1ffff11023f9a09f RBX: dffffc0000000000 RCX: ffff88811ed93b40
RDX: 0000000000000101 RSI: 0000000000000010 RDI: ffff88811fcd0234
RBP: ffffc90000170c18 R08: ffffffff842d29e4 R09: ffffed1021c81285
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000090
R13: 0000000000000000 R14: ffff88811fcd0000 R15: ffff88811fcd04f8
 ndisc_send_rs+0x26c/0x6a0 net/ipv6/ndisc.c:687
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3963
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1450
 expire_timers kernel/time/timer.c:1495 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1789
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1802
 __do_softirq+0x268/0x5bb kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1094
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:lru_cache_disabled+0x21/0x40 mm/swap.c:972
Code: 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 53 e8 76 41 d8 ff 48 c7 c7 80 c7 0b 87 be 04 00 00 00 e8 15 db 15 00 8b 1d df 5f 79 05 <31> ff 89 de e8 06 45 d8 ff 85 db 0f 95 c0 5b 5d c3 66 2e 0f 1f 84
RSP: 0018:ffffc9000114f4c8 EFLAGS: 00010297
RAX: ffffffff81926701 RBX: 0000000000000000 RCX: ffffffff8192679b
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff870bc780
RBP: ffffc9000114f4d0 R08: dffffc0000000000 R09: 0000000000000003
R10: fffffbfff0e178f0 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffffea0004847f40 R14: ffff888128324388 R15: 00007fbbc9871000
 zap_pte_range mm/memory.c:1320 [inline]
 zap_pmd_range mm/memory.c:1435 [inline]
 zap_pud_range mm/memory.c:1464 [inline]
 zap_p4d_range mm/memory.c:1485 [inline]
 unmap_page_range+0x1228/0x23b0 mm/memory.c:1506
 unmap_single_vma mm/memory.c:1551 [inline]
 unmap_vmas+0x37f/0x4f0 mm/memory.c:1583
 exit_mmap+0x2f2/0x5c0 mm/mmap.c:3355
 __mmput+0x95/0x2d0 kernel/fork.c:1153
 mmput+0x59/0x170 kernel/fork.c:1176
 exit_mm kernel/exit.c:539 [inline]
 do_exit+0xbda/0x2a50 kernel/exit.c:850
 do_group_exit+0x141/0x310 kernel/exit.c:985
 get_signal+0x10a0/0x1410 kernel/signal.c:2782
 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 syscall_exit_to_user_mode+0xa2/0x1a0 kernel/entry/common.c:274
 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fbbca8039f9
Code: Unable to access opcode bytes at RIP 0x7fbbca8039cf.
RSP: 002b:00007fbbc94620e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007fbbca992060 RCX: 00007fbbca8039f9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fbbca992064
RBP: 00007fbbca992058 R08: 00007fff6f6a20b0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbbca992064
R13: 0000000000000000 R14: 00007fff6f6a11f0 R15: 00007fff6f6a12d8