watchdog: BUG: soft lockup - CPU#1 stuck for 140s! [syz.1.74:817]
Modules linked in:
CPU: 1 PID: 817 Comm: syz.1.74 Not tainted 5.15.168-syzkaller-00719-g101e665d55a8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:update_stack_state+0x3b3/0x460 arch/x86/kernel/unwind_frame.c:242
Code: 03 42 80 3c 38 00 74 08 4c 89 f7 e8 97 a4 7d 00 65 48 8b 05 df 54 cd 7e 49 39 06 74 0d 48 89 df e8 42 fc ff ff 49 89 c6 eb 19 <48> 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 67 a4 7d 00
RSP: 0018:ffffc900001cfc90 EFLAGS: 00000246
RAX: ffff8881114fcf00 RBX: ffffc900001d0f10 RCX: 1ffff92000039fc7
RDX: 1ffff92000039fbe RSI: ffffc900001d0f08 RDI: ffffc900001cfe38
RBP: ffffc900001cfd48 R08: ffffc900001cfec8 R09: 0000000000000018
R10: ffffc900001cfed0 R11: dffffc0000000001 R12: 1ffff92000039fc4
R13: 0000000000000000 R14: ffffc900001cfe08 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc0528ae38 CR3: 000000013f3af000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 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
 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:2551
 rtnl_notify+0x9c/0xd0 net/core/rtnetlink.c:759
 __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/0x16f0 net/ipv6/ip6_output.c:127
 __ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:201
 ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:211
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1f7/0x4c0 net/ipv6/ip6_output.c:234
 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:511
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:705
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3979
 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
 handle_softirqs+0x25e/0x5c0 kernel/softirq.c:565
 __do_softirq kernel/softirq.c:603 [inline]
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:652
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:664
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__schedule+0xcd4/0x1590
Code: 44 24 48 42 0f b6 04 28 84 c0 0f 85 7f 02 00 00 41 80 24 24 fc 4c 89 f7 48 8b 74 24 08 e8 74 d2 1a fc 48 89 c7 e8 8c ca 67 fc <48> 8b 44 24 50 48 c7 44 24 60 0e 36 e0 45 49 c7 44 05 00 00 00 00
RSP: 0018:ffffc90000ac73a0 EFLAGS: 00000282
RAX: 0000000080000001 RBX: 1ffff1103ee27081 RCX: 0000000000000002
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001
RBP: ffffc90000ac7490 R08: dffffc0000000000 R09: ffffed102229f9e1
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881114fcf00
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881f7138408
 preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:6916
 irqentry_exit_cond_resched+0x2a/0x30 kernel/entry/common.c:398
 irqentry_exit+0x30/0x40 kernel/entry/common.c:432
 sysvec_apic_timer_interrupt+0x64/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:get_page_owner mm/page_owner.c:99 [inline]
RIP: 0010:__reset_page_owner+0xc6/0x190 mm/page_owner.c:164
Code: a2 00 00 00 e8 9b b6 b8 ff 41 83 ec 01 0f 82 b7 00 00 00 e8 8c b6 b8 ff 48 89 df be 08 00 00 00 e8 9f 10 fb ff 48 0f ba 33 01 <48> 8b 05 a3 75 0e 05 4c 8d 2c 03 48 8d 7c 03 0c 48 89 f8 48 c1 e8
RSP: 0018:ffffc90000ac7628 EFLAGS: 00000257
RAX: ffffffff81b7ae01 RBX: ffff888104032d90 RCX: ffffffff81b7ae91
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff888104032d90
RBP: ffffc90000ac7670 R08: dffffc0000000000 R09: ffffed10208065b3
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffea0004843cc0 R14: dffffc0000000000 R15: 0000000000000000
 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:417 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:519
 __fput+0x228/0x8c0 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:308
 task_work_run+0x129/0x190 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xc48/0x2ca0 kernel/exit.c:880
 do_group_exit+0x141/0x310 kernel/exit.c:1002
 get_signal+0x7a3/0x1630 kernel/signal.c:2907
 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: 0033:0x7fd935dbb809
Code: Unable to access opcode bytes at RIP 0x7fd935dbb7df.
RSP: 002b:00007fd934432058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007fd935f80fa0 RCX: 00007fd935dbb809
RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000005
RBP: 00007fd935e2e93e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd935f80fa0 R15: 00007ffd66fbbd28
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15 Comm: rcub/0 Not tainted 5.15.168-syzkaller-00719-g101e665d55a8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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 7e
RSP: 0018:ffffc90000007460 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 1ffff92000000e96 RCX: ffffffff8155424e
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff87197188
RBP: ffffc90000007510 R08: dffffc0000000000 R09: fffffbfff0e32e32
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900000074b0
R13: dffffc0000000000 R14: 1ffffffff0e32e31 R15: ffffffff87197188
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc04df7b038 CR3: 000000014c89f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 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_forced_gc net/core/neighbour.c:236 [inline]
 neigh_alloc net/core/neighbour.c:429 [inline]
 ___neigh_create+0x1f3/0x1bd0 net/core/neighbour.c:591
 __neigh_create+0x32/0x40 net/core/neighbour.c:679
 ip6_finish_output2+0x9ee/0x16f0 net/ipv6/ip6_output.c:127
 __ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:201
 ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:211
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1f7/0x4c0 net/ipv6/ip6_output.c:234
 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:511
 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:705
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3979
 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
 handle_softirqs+0x25e/0x5c0 kernel/softirq.c:565
 __do_softirq kernel/softirq.c:603 [inline]
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:652
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:664
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__kasan_check_read+0x12/0x20 mm/kasan/shadow.c:31
Code: 86 eb 0a 48 c7 c7 29 25 1a 86 4c 89 fe e8 66 e3 2d 03 31 db eb d3 cc cc 55 48 89 e5 89 f6 48 8b 4d 08 31 d2 e8 ff ed ff ff 5d <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 89 f6 48 8b
RSP: 0018:ffffc900000f7be8 EFLAGS: 00000256
RAX: 0000000000000001 RBX: ffff8881114fcf34 RCX: ffffffff84e6b9fb
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888100268000
RBP: ffffc900000f7c90 R08: dffffc0000000000 R09: ffffed102004d001
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888100268000 R14: ffffffff86bab478 R15: ffffc900000f7ce0
 __rt_mutex_slowlock kernel/locking/rtmutex.c:1629 [inline]
 __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1662 [inline]
 rt_mutex_slowlock+0x184/0x300 kernel/locking/rtmutex.c:1691
 __rt_mutex_lock kernel/locking/rtmutex.c:1703 [inline]
 __rt_mutex_lock_common kernel/locking/rtmutex_api.c:30 [inline]
 rt_mutex_lock+0x14a/0x210 kernel/locking/rtmutex_api.c:66
 rcu_boost kernel/rcu/tree_plugin.h:1060 [inline]
 rcu_boost_kthread+0x231/0x6e0 kernel/rcu/tree_plugin.h:1085
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>