watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz.2.7327:22374]
Modules linked in:
CPU: 1 PID: 22374 Comm: syz.2.7327 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:__rhashtable_lookup include/linux/rhashtable.h:-1 [inline]
RIP: 0010:rhashtable_lookup include/linux/rhashtable.h:638 [inline]
RIP: 0010:tipc_sk_lookup+0x1bf/0x600 net/tipc/socket.c:3003
Code: 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 d9 02 00 00 44 89 f0 41 81 c6 f3 be ad de 8d 8c 06 f3 be ad de 44 89 f0 c1 c0 0e <f7> d8 89 c2 c1 c2 0b 31 c1 29 d1 41 31 ce 89 ca c1 c2 19 41 29 d6
RSP: 0018:ffffc9000302e900 EFLAGS: 00000297
RAX: 00000000a088a55d RBX: 0000000000000100 RCX: 000000008099d4d6
RDX: ffff88810ec3a000 RSI: 00000000eb2352b4 RDI: ffff88810ec3a008
RBP: ffffc9000302e9f0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000605d30 R12: dffffc0000000000
R13: ffff88810ec3a004 R14: 0000000095768222 R15: ffff8881140050de
FS:  00007f42070c26c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000040 CR3: 00000001178ba000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tipc_sk_rcv+0x350/0x1df0 net/tipc/socket.c:2494
 tipc_node_xmit+0x36c/0xd80 net/tipc/node.c:1679
 tipc_node_xmit_skb net/tipc/node.c:1744 [inline]
 tipc_node_distr_xmit+0x277/0x390 net/tipc/node.c:1759
 tipc_sk_rcv+0x1913/0x1df0 net/tipc/socket.c:2503
 tipc_node_xmit+0x36c/0xd80 net/tipc/node.c:1679
 tipc_sk_push_backlog net/tipc/socket.c:1307 [inline]
 tipc_sk_filter_connect net/tipc/socket.c:2259 [inline]
 tipc_sk_filter_rcv+0x19ad/0x3860 net/tipc/socket.c:2368
 tipc_sk_enqueue net/tipc/socket.c:2448 [inline]
 tipc_sk_rcv+0x745/0x1df0 net/tipc/socket.c:2499
 tipc_node_xmit+0x36c/0xd80 net/tipc/node.c:1679
 tipc_node_xmit_skb net/tipc/node.c:1744 [inline]
 tipc_node_distr_xmit+0x277/0x390 net/tipc/node.c:1759
 tipc_sk_backlog_rcv+0x174/0x220 net/tipc/socket.c:2416
 sk_backlog_rcv include/net/sock.h:1071 [inline]
 __release_sock+0x146/0x360 net/core/sock.c:2588
 release_sock net/core/sock.c:3141 [inline]
 sock_setsockopt+0x1801/0x2620 net/core/sock.c:1256
 __sys_setsockopt+0x272/0x480 net/socket.c:2143
 __do_sys_setsockopt net/socket.c:2158 [inline]
 __se_sys_setsockopt net/socket.c:2155 [inline]
 __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2155
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f42072611d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f42070c2028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f42074e8fa0 RCX: 00007f42072611d9
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007f42072f8888 R08: 0000000000000004 R09: 0000000000000000
R10: 0000200000000180 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f42074e9038 R14: 00007f42074e8fa0 R15: 00007ffd0bd7b258
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 22375 Comm: syz.2.7327 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
RIP: 0010:kvm_wait+0xce/0x130 arch/x86/kernel/kvm.c:926
Code: 38 f0 75 26 41 f7 c4 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d c3 1c b8 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d b4 1c b8 03 fb f4 <4c> 89 64 24 18 ff 74 24 18 9d 48 c7 44 24 20 0e 36 e0 45 4b c7 04
RSP: 0018:ffffc900038df6e0 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffff888118061e88 RCX: ffffffff814bec24
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff888118061e88
RBP: ffffc900038df790 R08: ffff888118061e88 R09: 1ffff1102300c3d1
R10: dffffc0000000000 R11: ffffed102300c3d2 R12: 0000000000000246
R13: f99cf293c5659ed8 R14: dffffc0000000000 R15: 1ffff9200071bee0
FS:  00007f42070a16c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f42070a0ff8 CR3: 00000001178ba000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x72d/0xb80 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline]
 queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:184 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0xe4/0xf0 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:360 [inline]
 lock_sock_nested+0x90/0x2a0 net/core/sock.c:3124
 lock_sock include/net/sock.h:1697 [inline]
 tipc_sendstream+0x47/0x70 net/tipc/socket.c:1544
 sock_sendmsg_nosec net/socket.c:652 [inline]
 __sock_sendmsg net/socket.c:664 [inline]
 ____sys_sendmsg+0x5be/0x8f0 net/socket.c:2377
 ___sys_sendmsg+0x236/0x2e0 net/socket.c:2431
 __sys_sendmsg net/socket.c:2460 [inline]
 __do_sys_sendmsg net/socket.c:2469 [inline]
 __se_sys_sendmsg net/socket.c:2467 [inline]
 __x64_sys_sendmsg+0x201/0x2d0 net/socket.c:2467
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f42072611d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f42070a1028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f42074e9090 RCX: 00007f42072611d9
RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 0000000000000004
RBP: 00007f42072f8888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f42074e9128 R14: 00007f42074e9090 R15: 00007ffd0bd7b258