RBP: 00007fc9d6801b08 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000020000540 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc9d6975fa0 R15: 00007ffda1da27a8
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.1.1858:6058]
Modules linked in:
CPU: 0 PID: 6058 Comm: syz.1.1858 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:rcu_read_unlock_special+0x3bf/0x480 kernel/rcu/tree_plugin.h:685
Code: 00 00 00 e8 43 f8 e5 ff 4c 8b 74 24 08 41 f7 c6 00 02 00 00 48 bb 00 00 00 00 00 fc ff df 74 01 fb 48 c7 44 24 20 0e 36 e0 45 <49> c7 44 1d 00 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 44 24
RSP: 0018:ffffc90001046700 EFLAGS: 00000206
RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffffffff815ccf4a
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff888112725100
RBP: ffffc900010467a8 R08: dffffc0000000000 R09: ffffed10224e4a21
R10: ffffed10224e4a21 R11: 1ffff110224e4a20 R12: 0000000000000001
R13: 1ffff92000208ce4 R14: 0000000000000202 R15: ffff888112725100
FS: 00007fc9d75786c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000012e835000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__rcu_read_unlock+0x5e/0xa0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:832 [inline]
tipc_sk_lookup+0x557/0x620 net/tipc/socket.c:3004
tipc_sk_rcv+0x419/0x2cc0 net/tipc/socket.c:2492
tipc_node_xmit+0x257/0xd00 net/tipc/node.c:1703
tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1783
tipc_sk_rcv+0x1aa3/0x2cc0 net/tipc/socket.c:2501
tipc_node_xmit+0x257/0xd00 net/tipc/node.c:1703
tipc_sk_push_backlog net/tipc/socket.c:1316 [inline]
tipc_sk_filter_connect net/tipc/socket.c:2255 [inline]
tipc_sk_filter_rcv+0x155f/0x2c80 net/tipc/socket.c:2364
tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
tipc_sk_rcv+0x7d9/0x2cc0 net/tipc/socket.c:2497
tipc_node_xmit+0x257/0xd00 net/tipc/node.c:1703
tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1783
tipc_sk_backlog_rcv+0x16f/0x1f0 net/tipc/socket.c:2412
sk_backlog_rcv include/net/sock.h:1131 [inline]
__release_sock+0x154/0x380 net/core/sock.c:2945
release_sock net/core/sock.c:3519 [inline]
sockopt_release_sock+0x95/0x1f0 net/core/sock.c:1067
sk_setsockopt+0x1355/0x2590 net/core/sock.c:-1
sock_setsockopt+0x5a/0x70 net/core/sock.c:1552
__sys_setsockopt+0x270/0x4e0 net/socket.c:2274
__do_sys_setsockopt net/socket.c:2289 [inline]
__se_sys_setsockopt net/socket.c:2286 [inline]
__x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2286
x64_sys_call+0x124/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:55
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc9d6785d29
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:00007fc9d7578038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fc9d6975fa0 RCX: 00007fc9d6785d29
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007fc9d6801b08 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000020000540 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc9d6975fa0 R15: 00007ffda1da27a8
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6057 Comm: syz.1.1858 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
RIP: 0010:kvm_wait+0xf2/0x140 arch/x86/kernel/kvm.c:1064
Code: 96 13 04 f4 eb 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07 40 38 f0 75 10 66 90 0f 00 2d 20 96 13 04 fb f4 71 ff ff ff fb e9 6b ff ff ff e8 ae c9 b8 03 89 f9 80 e1 07 38
RSP: 0018:ffffc90000f778a0 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffff888130f19e98 RCX: ffffffff84f43dc2
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888130f19e98
RBP: ffffc90000f77930 R08: dffffc0000000000 R09: ffffed10261e33d4
R10: ffffed10261e33d4 R11: 1ffff110261e33d3 R12: 1ffff1103ee20001
R13: ffff8881f7138cd4 R14: dffffc0000000000 R15: 1ffff920001eef14
FS: 000055555714c500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558ed7a4a8 CR3: 000000012e835000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:603 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x690/0xc40 kernel/locking/qspinlock.c:511
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock include/linux/spinlock.h:187 [inline]
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline]
_raw_spin_lock_bh+0xd8/0xe0 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
lock_sock_nested+0x92/0x280 net/core/sock.c:3507
lock_sock include/net/sock.h:1769 [inline]
tipc_release+0xb2/0x1650 net/tipc/socket.c:639
__sock_release net/socket.c:652 [inline]
sock_close+0xf1/0x290 net/socket.c:1390
__fput+0x1fc/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1db/0x240 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
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+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc9d6785d29
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:00007ffda1da2908 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fc9d6977ba0 RCX: 00007fc9d6785d29
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fc9d6977ba0 R08: 0000000000000000 R09: 00007ffda1da2bff
R10: 00007fc9d6977ac0 R11: 0000000000000246 R12: 000000000000ed53
R13: 00007fc9d6976080 R14: 0000000000000032 R15: ffffffffffffffff