watchdog: BUG: soft lockup - CPU#1 stuck for 244s! [syz.4.602:3288]
Modules linked in:
CPU: 1 PID: 3288 Comm: syz.4.602 Tainted: G        W         5.15.157-syzkaller-00897-g53be7c8abe11 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:unwind_get_return_address+0x0/0x90 arch/x86/kernel/unwind_frame.c:15
Code: 5d c3 48 c7 c1 00 85 ad 86 80 e1 07 80 c1 03 38 c1 7c af 48 c7 c7 00 85 ad 86 e8 3b c2 7d 00 eb a1 cc cc cc cc cc cc cc cc cc <55> 48 89 e5 41 57 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900001cfdd8 EFLAGS: 00000202
RAX: 00000000001cfe01 RBX: ffffc900001cfde0 RCX: 00000000001cfe01
RDX: 1ffff92000039fbe RSI: ffffc90000e47bc0 RDI: ffffc900001cfde0
RBP: ffffc900001cfe70 R08: ffffc900001cfec8 R09: 0000000000000034
R10: ffffc900001cfed0 R11: dffffc0000000001 R12: ffff8881186ae2c0
R13: ffffffff815f87f0 R14: ffffc900001cfec0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b2a3006c0 CR3: 0000000126abb000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1723 [inline]
 slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749
 slab_free mm/slub.c:3519 [inline]
 kfree+0xc8/0x220 mm/slub.c:4579
 skb_free_head net/core/skbuff.c:656 [inline]
 skb_release_data+0x8a9/0xa80 net/core/skbuff.c:678
 skb_release_all net/core/skbuff.c:743 [inline]
 __kfree_skb net/core/skbuff.c:757 [inline]
 consume_skb+0xac/0x250 net/core/skbuff.c:930
 netlink_broadcast_filtered+0x10f4/0x1220 net/netlink/af_netlink.c:1540
 netlink_broadcast net/netlink/af_netlink.c:1562 [inline]
 nlmsg_multicast include/net/netlink.h:1033 [inline]
 nlmsg_notify+0x101/0x1c0 net/netlink/af_netlink.c:2548
 rtnl_notify+0x9c/0xd0 net/core/rtnetlink.c:730
 __neigh_notify+0xcc/0x120 net/core/neighbour.c:3386
 neigh_cleanup_and_release+0x2c/0x1b0 net/core/neighbour.c:101
 neigh_del net/core/neighbour.c:197 [inline]
 neigh_remove_one+0x3a6/0x430 net/core/neighbour.c:218
 neigh_forced_gc net/core/neighbour.c:251 [inline]
 neigh_alloc net/core/neighbour.c:429 [inline]
 ___neigh_create+0x474/0x1bd0 net/core/neighbour.c:591
 __neigh_create+0x32/0x40 net/core/neighbour.c:679
 ip6_finish_output2+0x9ee/0x16e0 net/ipv6/ip6_output.c:123
 __ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:197
 ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:207
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:230
 dst_output include/net/dst.h:444 [inline]
 NF_HOOK include/linux/netfilter.h:305 [inline]
 ndisc_send_skb+0x73e/0xc90 net/ipv6/ndisc.c:509
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:703
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3978
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1457
 expire_timers kernel/time/timer.c:1502 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1773
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1786
 __do_softirq+0x26d/0x5bf kernel/softirq.c:565
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:648
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:660
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_schedule_irq+0xc2/0x140 kernel/sched/core.c:6916
Code: 4c 89 e7 e8 d0 a1 ce 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 e4 37 68 fc fb bf 01 00 00 00 <e8> e9 e3 ff ff fa bf 01 00 00 00 e8 6e 39 68 fc 65 48 8b 1d c6 50
RSP: 0018:ffffc90000e47080 EFLAGS: 00000246
RAX: 1ffff110230d5dae RBX: 1ffff920001c8e14 RCX: ffffffff84e5ee00
RDX: 1ffff110230d5c5d RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90000e47118 R08: ffffffff874cc040 R09: ffffffff874cc048
R10: ffffffff874cc058 R11: ffffffff874cc050 R12: ffffc90000e470a0
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920001c8e10
 irqentry_exit_cond_resched+0x2a/0x30 kernel/entry/common.c:398
 irqentry_exit+0x30/0x40 kernel/entry/common.c:432
 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:update_stack_state+0x321/0x460 arch/x86/kernel/unwind_frame.c:233
Code: 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 ef e8 06 b7 7d 00 41 f6 45 00 03 4c 8b 75 b8 74 66 45 31 f6 e9 af 00 00 00 48 8b 45 d0 <4c> 8d 70 38 4c 89 f0 48 c1 e8 03 49 bf 00 00 00 00 00 fc ff df 42
RSP: 0018:ffffc90000e47210 EFLAGS: 00000246
RAX: ffffc90000e47360 RBX: ffffc90000e47388 RCX: ffffc90000e47628
RDX: 1ffff920001c8e6e RSI: ffffc90000e47618 RDI: ffffc90000e473b8
RBP: ffffc90000e472c8 R08: ffffc90000e47448 R09: 0000000000000000
R10: ffffc90000e47450 R11: dffffc0000000001 R12: 1ffff920001c8e74
R13: 0000000000000000 R14: ffffc90000e473a0 R15: 0000000000000001
 unwind_next_frame+0x3cb/0x700 arch/x86/kernel/unwind_frame.c:305
 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 save_stack+0xf6/0x1e0 mm/page_owner.c:139
 __reset_page_owner+0x36/0x190 mm/page_owner.c:156
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1472 [inline]
 free_pcp_prepare mm/page_alloc.c:1544 [inline]
 free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3534
 free_unref_page+0xe8/0x750 mm/page_alloc.c:3616
 free_the_page mm/page_alloc.c:805 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5855
 __vunmap+0x7bc/0x8f0 mm/vmalloc.c:2652
 __vfree mm/vmalloc.c:2700 [inline]
 vfree+0x7f/0xb0 mm/vmalloc.c:2731
 kcov_put kernel/kcov.c:408 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:510
 __fput+0x3fe/0x910 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:308
 task_work_run+0x129/0x190 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xc48/0x2ca0 kernel/exit.c:878
 do_group_exit+0x141/0x310 kernel/exit.c:1000
 get_signal+0x7a3/0x1630 kernel/signal.c:2896
 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320
 irqentry_exit+0x12/0x40 kernel/entry/common.c:411
 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0033:0x7f233af94347
Code: Unable to access opcode bytes at RIP 0x7f233af9431d.
RSP: 002b:00007f2339d48040 EFLAGS: 00000217
RAX: 0000000000000000 RBX: 00007f233b286f80 RCX: 00007f233b0cdef9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007f233b140046 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f233b286f80 R15: 00007ffe269195c8
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3930 Comm: syz.1.694 Tainted: G        W         5.15.157-syzkaller-00897-g53be7c8abe11 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__preempt_count_sub arch/x86/include/asm/preempt.h:85 [inline]
RIP: 0010:preempt_count_sub+0x5d/0x160 kernel/sched/core.c:5661
Code: 22 65 8b 05 2d 17 b6 7e 89 c1 81 e1 ff ff ff 7f 39 d9 7c 24 81 fb fe 00 00 00 77 07 0f b6 c0 85 c0 74 56 65 8b 05 0b 17 b6 7e <f7> db 65 01 1d 02 17 b6 7e 5b 41 5e 5d c3 e8 e0 38 16 01 85 c0 74
RSP: 0018:ffffc90000007208 EFLAGS: 00000006
RAX: 0000000000010503 RBX: 0000000000000001 RCX: 0000000000010503
RDX: 0000000000010503 RSI: 0000000000000046 RDI: 0000000000000001
RBP: ffffc90000007218 R08: ffffffff8160f141 R09: ffff888123bd45f8
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7029a00
R13: 0000000000000002 R14: dffffc0000000000 R15: ffff8881f7029af8
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555608c4a8 CR3: 0000000138b85000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000020000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
 _raw_spin_unlock_irqrestore+0x5c/0x80 kernel/locking/spinlock.c:194
 hrtimer_interrupt+0x61b/0xaa0 kernel/time/hrtimer.c:1821
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0xfd/0x3c0 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x44/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:queued_write_lock_slowpath+0x159/0x440 kernel/locking/qrwlock.c:78
Code: 41 81 0f 00 01 00 00 48 8b 5c 24 08 43 0f b6 04 2e 84 c0 0f 85 94 00 00 00 41 8b 07 3d 00 01 00 00 74 27 f3 90 43 0f b6 04 2e <84> c0 74 eb 44 89 f9 80 e1 07 80 c1 03 38 c1 7c de 4c 89 ff e8 ee
RSP: 0018:ffffc90000007460 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 1ffff92000000e96 RCX: ffffffff81553bfe
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff87194a88
RBP: ffffc90000007510 R08: dffffc0000000000 R09: fffffbfff0e32952
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900000074b0
R13: dffffc0000000000 R14: 1ffffffff0e32951 R15: ffffffff87194a88
 queued_write_lock include/asm-generic/qrwlock.h:97 [inline]
 __raw_write_lock_bh include/linux/rwlock_api_smp.h:204 [inline]
 _raw_write_lock_bh+0x10a/0x170 kernel/locking/spinlock.c:324
 ___neigh_create+0xd0d/0x1bd0 net/core/neighbour.c:625
 __neigh_create+0x32/0x40 net/core/neighbour.c:679
 ip6_finish_output2+0x9ee/0x16e0 net/ipv6/ip6_output.c:123
 __ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:197
 ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:207
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:230
 dst_output include/net/dst.h:444 [inline]
 NF_HOOK include/linux/netfilter.h:305 [inline]
 ndisc_send_skb+0x73e/0xc90 net/ipv6/ndisc.c:509
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:703
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3978
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1457
 expire_timers kernel/time/timer.c:1502 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1773
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1786
 __do_softirq+0x26d/0x5bf kernel/softirq.c:565
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:648
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:660
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__should_fail_alloc_page mm/page_alloc.c:4084 [inline]
RIP: 0010:should_fail_alloc_page+0x17/0x80 mm/page_alloc.c:4131
Code: 86 e8 5d 3e 05 00 eb bc 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 53 31 c0 f7 c7 00 80 00 00 75 4b 89 f3 39 35 55 68 17 05 <77> 41 40 f6 c7 02 74 09 80 3d 42 68 17 05 00 75 11 f7 c7 00 04 00
RSP: 0018:ffffc90001167228 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff9200022ce77
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000002800
RBP: ffffc90001167230 R08: ffffc900011673a0 R09: ffffc90001167390
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900011673c8
R13: 0000000000000000 R14: ffffc900011673b0 R15: 0000000000002800
 prepare_alloc_pages+0x15c/0x700 mm/page_alloc.c:5550
 __alloc_pages+0x18c/0x8f0 mm/page_alloc.c:5768
 __alloc_pages_node include/linux/gfp.h:591 [inline]
 alloc_pages_node include/linux/gfp.h:605 [inline]
 alloc_pages include/linux/gfp.h:618 [inline]
 __get_free_pages+0x10/0x30 mm/page_alloc.c:5816
 tlb_next_batch mm/mmu_gather.c:29 [inline]
 __tlb_remove_page_size+0x178/0x300 mm/mmu_gather.c:83
 __tlb_remove_page include/asm-generic/tlb.h:444 [inline]
 zap_pte_range mm/memory.c:1437 [inline]
 zap_pmd_range mm/memory.c:1559 [inline]
 zap_pud_range mm/memory.c:1588 [inline]
 zap_p4d_range mm/memory.c:1609 [inline]
 unmap_page_range+0x1226/0x1ed0 mm/memory.c:1630
 unmap_single_vma mm/memory.c:1675 [inline]
 unmap_vmas+0x389/0x560 mm/memory.c:1707
 exit_mmap+0x3e4/0x940 mm/mmap.c:3215
 __mmput+0x95/0x310 kernel/fork.c:1179
 mmput+0x5b/0x170 kernel/fork.c:1202
 exit_mm kernel/exit.c:552 [inline]
 do_exit+0xb9c/0x2ca0 kernel/exit.c:865
 do_group_exit+0x141/0x310 kernel/exit.c:1000
 get_signal+0x7a3/0x1630 kernel/signal.c:2896
 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fb6950fbef9
Code: Unable to access opcode bytes at RIP 0x7fb6950fbecf.
RSP: 002b:00007fb693d76038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007fb6952b4f80 RCX: 00007fb6950fbef9
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000005
RBP: 00007fb69516e046 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb6952b4f80 R15: 00007ffef45a5f28
 </TASK>