RBP: 00007faa6b458e19 R08: 0000000000000004 R09: 0000000000000000
R10: 0000200000000540 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faa6b60d128 R14: 00007faa6b60d090 R15: 00007fff63d091c8
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.6.8197:29778]
Modules linked in:
CPU: 0 PID: 29778 Comm: syz.6.8197 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:tipc_sk_rcv+0x24c/0x2c60 net/tipc/socket.c:-1
Code: 84 24 38 01 00 00 48 c7 c0 90 23 e8 86 48 c1 e8 03 48 89 84 24 30 01 00 00 49 8d 46 14 48 89 84 24 e0 00 00 00 4c 89 74 24 40 <48> 8b bc 24 e0 00 00 00 e8 37 8d 1b 00 48 8b 84 24 70 01 00 00 42
RSP: 0018:ffffc90000b26960 EFLAGS: 00000293
RAX: 000000003d776e32 RBX: 0000000000000005 RCX: ffff888111e38000
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001
RBP: ffffc90000b26bf0 R08: dffffc0000000000 R09: ffffed10321306f1
R10: ffffed10321306f1 R11: 1ffff110321306f0 R12: ffff8881117b3000
R13: dffffc0000000000 R14: ffffc90000b26de0 R15: 000000003d776e32
FS:  00007faa69e1d6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000001 CR3: 00000001dc930000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 tipc_node_xmit+0x256/0xce0 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+0x19de/0x2c60 net/tipc/socket.c:2501
 tipc_node_xmit+0x256/0xce0 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+0x151b/0x2c40 net/tipc/socket.c:2364
 tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
 tipc_sk_rcv+0x7b7/0x2c60 net/tipc/socket.c:2497
 tipc_node_xmit+0x256/0xce0 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:1071 [inline]
 __release_sock+0x143/0x350 net/core/sock.c:2731
 release_sock net/core/sock.c:3282 [inline]
 sock_setsockopt+0x1b65/0x2270 net/core/sock.c:1381
 __sys_setsockopt+0x268/0x460 net/socket.c:2199
 __do_sys_setsockopt net/socket.c:2214 [inline]
 __se_sys_setsockopt net/socket.c:2211 [inline]
 __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2211
 x64_sys_call+0x982/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:55
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7faa6b3d5be9
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:00007faa69e1d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007faa6b60d090 RCX: 00007faa6b3d5be9
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000006
RBP: 00007faa6b458e19 R08: 0000000000000004 R09: 0000000000000000
R10: 0000200000000540 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faa6b60d128 R14: 00007faa6b60d090 R15: 00007fff63d091c8
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 29777 Comm: syz.6.8197 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x527/0x9c0 kernel/locking/qspinlock.c:508
Code: 00 41 c6 45 00 00 48 8b 44 24 10 42 0f b6 04 38 84 c0 0f 85 1c 01 00 00 48 8b 44 24 08 c6 00 01 41 bd 00 80 ff ff eb 07 f3 90 <41> ff c5 74 47 43 0f b6 04 3e 84 c0 75 2b 80 3b 00 75 eb 48 89 df
RSP: 0018:ffffc90000d87760 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffff888190983788 RCX: ffffffff814f3b89
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff888190983788
RBP: ffffc90000d87850 R08: dffffc0000000000 R09: ffffed10321306f2
R10: ffffed10321306f2 R11: 1ffff110321306f1 R12: 1ffff1103ee20001
R13: 00000000ffff890f R14: 1ffff110321306f1 R15: dffffc0000000000
FS:  00007faa69e3e6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000000b CR3: 00000001dc930000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [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:187 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0xd8/0xe0 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:368 [inline]
 lock_sock_nested+0x97/0x290 net/core/sock.c:3270
 lock_sock include/net/sock.h:1694 [inline]
 tipc_sendstream+0x47/0x70 net/tipc/socket.c:1549
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 ____sys_sendmsg+0x5a2/0x8c0 net/socket.c:2436
 ___sys_sendmsg+0x1f0/0x260 net/socket.c:2490
 __sys_sendmsg net/socket.c:2519 [inline]
 __do_sys_sendmsg net/socket.c:2528 [inline]
 __se_sys_sendmsg net/socket.c:2526 [inline]
 __x64_sys_sendmsg+0x1e2/0x2a0 net/socket.c:2526
 x64_sys_call+0x4b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7faa6b3d5be9
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:00007faa69e3e038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007faa6b60cfa0 RCX: 00007faa6b3d5be9
RDX: 0000000000000000 RSI: 0000200000000200 RDI: 0000000000000007
RBP: 00007faa6b458e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faa6b60d038 R14: 00007faa6b60cfa0 R15: 00007fff63d091c8
 </TASK>