watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz.0.17:373]
Modules linked in:
CPU: 1 PID: 373 Comm: syz.0.17 Tainted: G W 6.1.93-syzkaller-00066-g3bb5a64ae9b0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x1/0x60 kernel/kcov.c:200
Code: 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 24 e3 fc 05 48 89 de e8 74 69 46 00 5b 5d c3 cc 55 <48> 89 e5 48 8b 45 08 65 48 8b 0d 60 c8 8c 7e 65 8b 15 61 c8 8c 7e
RSP: 0018:ffffc900001b0360 EFLAGS: 00000246
RAX: ffffffff84034524 RBX: 0000000000000001 RCX: ffff88810eebbcc0
RDX: 0000000000000301 RSI: 0000000000000001 RDI: ffff88811feafdc0
RBP: ffffc900001b0398 R08: ffffffff84034510 R09: ffffed1023fd5fd7
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88811feafdc0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000010eb80000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
skb_release_all net/core/skbuff.c:854 [inline]
__kfree_skb net/core/skbuff.c:870 [inline]
consume_skb+0x7c/0x250 net/core/skbuff.c:1035
netlink_broadcast+0x103c/0x1160 net/netlink/af_netlink.c:1524
nlmsg_multicast include/net/netlink.h:1071 [inline]
nlmsg_notify+0xfb/0x1c0 net/netlink/af_netlink.c:2561
rtnl_notify+0x9c/0xd0 net/core/rtnetlink.c:767
__neigh_notify+0xcc/0x130 net/core/neighbour.c:3515
neigh_cleanup_and_release+0x2c/0x1b0 net/core/neighbour.c:101
neigh_del net/core/neighbour.c:225 [inline]
neigh_remove_one+0x4d5/0x560 net/core/neighbour.c:246
neigh_forced_gc net/core/neighbour.c:279 [inline]
neigh_alloc net/core/neighbour.c:485 [inline]
___neigh_create+0x447/0x1db0 net/core/neighbour.c:648
__neigh_create+0x32/0x40 net/core/neighbour.c:737
ip6_finish_output2+0x9d0/0x1840 net/ipv6/ip6_output.c:125
__ip6_finish_output net/ipv6/ip6_output.c:201 [inline]
ip6_finish_output+0x50f/0xa60 net/ipv6/ip6_output.c:212
NF_HOOK_COND include/linux/netfilter.h:294 [inline]
ip6_output+0x1f7/0x4c0 net/ipv6/ip6_output.c:233
dst_output include/net/dst.h:444 [inline]
NF_HOOK include/linux/netfilter.h:305 [inline]
ndisc_send_skb+0x7cf/0xdc0 net/ipv6/ndisc.c:509
ndisc_send_rs+0x47d/0x5f0 net/ipv6/ndisc.c:719
addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3984
call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1510
expire_timers kernel/time/timer.c:1555 [inline]
__run_timers+0x72a/0xa10 kernel/time/timer.c:1826
run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1839
handle_softirqs+0x1db/0x650 kernel/softirq.c:617
__do_softirq kernel/softirq.c:655 [inline]
invoke_softirq kernel/softirq.c:472 [inline]
__irq_exit_rcu+0x52/0xf0 kernel/softirq.c:704
irq_exit_rcu+0x9/0x10 kernel/softirq.c:716
sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:update_stack_state+0x3bf/0x460 arch/x86/kernel/unwind_frame.c:252
Code: 87 f1 84 00 65 48 8b 05 bf 93 ca 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 57 f1 84 00 4c 8b 33 48 8b 5d d0 48 83 c3 48 48
RSP: 0018:ffffc9000b3a70d0 EFLAGS: 00000246
RAX: 1ffff92001674fd7 RBX: ffffc9000b3a7eb8 RCX: 1ffff92001674e4f
RDX: 1ffff92001674e46 RSI: ffffc9000b3a7eb0 RDI: ffffc9000b3a7278
RBP: ffffc9000b3a7188 R08: ffffc9000b3a7308 R09: 000000000000000c
R10: ffffc9000b3a7310 R11: dffffc0000000001 R12: 1ffff92001674e4c
R13: 0000000000000000 R14: ffffc9000b3a7248 R15: dffffc0000000000
unwind_next_frame+0x3cb/0x700 arch/x86/kernel/unwind_frame.c:315
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:147
__reset_page_owner+0x54/0x190 mm/page_owner.c:168
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1498 [inline]
free_pcp_prepare mm/page_alloc.c:1572 [inline]
free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3498
free_unref_page+0xb2/0x5c0 mm/page_alloc.c:3594
free_the_page mm/page_alloc.c:798 [inline]
__free_pages+0x61/0xf0 mm/page_alloc.c:5803
__vunmap+0x9f3/0xb60 mm/vmalloc.c:2728
__vfree mm/vmalloc.c:2776 [inline]
vfree+0x5c/0x80 mm/vmalloc.c:2807
kcov_put kernel/kcov.c:428 [inline]
kcov_close+0x2b/0x50 kernel/kcov.c:524
__fput+0x3ab/0x870 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x24d/0x2e0 kernel/task_work.c:179
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xbd5/0x2b80 kernel/exit.c:875
do_group_exit+0x21a/0x2d0 kernel/exit.c:1025
get_signal+0x169d/0x1820 kernel/signal.c:2880
arch_do_signal_or_restart+0xb0/0x16f0 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x74/0xa0 kernel/entry/common.c:174
exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fae62179ef9
Code: Unable to access opcode bytes at 0x7fae62179ecf.
RSP: 002b:00007fae62fd6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007fae62315f80 RCX: 00007fae62179ef9
RDX: 0000000020000780 RSI: 0000000000005452 RDI: 0000000000000005
RBP: 00007fae621e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fae62315f80 R15: 00007ffe1640f888
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15 Comm: rcub/0 Tainted: G W 6.1.93-syzkaller-00066-g3bb5a64ae9b0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:rt_mutex_slowlock_block+0x373/0x5a0 kernel/locking/rtmutex.c:1567
Code: be 08 00 00 00 e8 1d b6 9d fc 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 27 b4 9d fc 49 f7 45 00 08 00 00 00 75 7c <48> 8b 45 98 42 80 3c 20 00 4c 8b 75 90 74 08 4c 89 f7 e8 06 b4 9d
RSP: 0018:ffffc900000f7bf0 EFLAGS: 00000246
RAX: 1ffff11020074288 RBX: ffff88810eebbcd4 RCX: ffffffff851f1743
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881003a1440
RBP: ffffc900000f7c90 R08: dffffc0000000000 R09: ffffed1020074289
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881003a1440 R14: ffffffff86fb5d30 R15: ffffc900000f7ce0
FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9c55522000 CR3: 0000000006e0f000 CR4: 00000000003506b0
DR0: 0000000020000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
__rt_mutex_slowlock kernel/locking/rtmutex.c:1637 [inline]
__rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1673 [inline]
rt_mutex_slowlock+0x19c/0x480 kernel/locking/rtmutex.c:1702
__rt_mutex_lock kernel/locking/rtmutex.c:1714 [inline]
__rt_mutex_lock_common kernel/locking/rtmutex_api.c:31 [inline]
rt_mutex_lock+0x145/0x210 kernel/locking/rtmutex_api.c:73
rcu_boost kernel/rcu/tree_plugin.h:1099 [inline]
rcu_boost_kthread+0x231/0x6e0 kernel/rcu/tree_plugin.h:1124
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308