watchdog: BUG: soft lockup - CPU#0 stuck for 225s! [syz-executor303:1195]
Modules linked in:
CPU: 0 PID: 1195 Comm: syz-executor303 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x589/0xc40 kernel/locking/qspinlock.c:511
Code: c0 0f 85 31 01 00 00 41 c6 45 00 00 41 0f b6 04 14 84 c0 0f 85 44 01 00 00 48 8d 43 01 c6 00 01 41 bd 00 80 ff ff eb 07 f3 90 <41> ff c5 74 5b 41 0f b6 04 16 84 c0 75 35 80 3b 00 75 eb 48 89 df
RSP: 0018:ffffc90001957700 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffff8881175ff798 RCX: ffffffff850243b9
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881175ff798
RBP: ffffc900019577f0 R08: ffff8881175ff798 R09: 1ffff11022ebfef3
R10: dffffc0000000000 R11: ffffed1022ebfef4 R12: 1ffff11022ebfef3
R13: 00000000ffffe0c3 R14: 1ffff11022ebfef3 R15: 0000000000040001
FS:  00007f15ee94f6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002700 CR3: 0000000121a8d000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 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+0xe4/0xf0 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 lock_sock_nested+0x90/0x290 net/core/sock.c:3524
 lock_sock include/net/sock.h:1818 [inline]
 tipc_sendstream+0x47/0x70 net/tipc/socket.c:1549
 sock_sendmsg_nosec net/socket.c:716 [inline]
 __sock_sendmsg net/socket.c:728 [inline]
 ____sys_sendmsg+0x5fb/0x9c0 net/socket.c:2509
 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2563
 __sys_sendmsg net/socket.c:2592 [inline]
 __do_sys_sendmsg net/socket.c:2601 [inline]
 __se_sys_sendmsg net/socket.c:2599 [inline]
 __x64_sys_sendmsg+0x20d/0x2e0 net/socket.c:2599
 x64_sys_call+0x171/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f15ee96f359
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 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 d0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f15ee94f218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000032 RCX: 00007f15ee96f359
RDX: 0000000000000000 RSI: 0000200000002700 RDI: 0000000000000004
RBP: 00007f15eea20b48 R08: 31203a6b63617473 R09: 31203a6b63617473
R10: 31203a6b63617473 R11: 0000000000000246 R12: 0000200000002700
R13: 00007f15eea20b40 R14: 00007f15eea20b4c R15: 0000200000000004
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1196 Comm: syz-executor303 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
RIP: 0010:__local_bh_enable_ip+0x63/0x80 kernel/softirq.c:456
Code: 0d 69 85 e8 7f 10 b8 03 65 66 8b 05 77 15 c0 7e 66 85 c0 75 22 bf 01 00 00 00 e8 d8 35 09 00 65 8b 05 69 0c bf 7e 85 c0 74 02 <5d> c3 e8 3a 1b bd ff 5d c3 0f 0b eb a2 e8 1b 00 00 00 eb d7 66 0f
RSP: 0018:ffffc900019868b0 EFLAGS: 00000202
RAX: 0000000000000201 RBX: ffff8881175ff798 RCX: 0000000000000200
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 00000000ffffffff
RBP: ffffc900019868b0 R08: ffff8881175ff79b R09: 1ffff11022ebfef3
R10: dffffc0000000000 R11: ffffed1022ebfef4 R12: dffffc0000000000
R13: 1ffff92000330d18 R14: ffffffff84dabec7 R15: 000000008fb45e2f
FS:  00007f15ee92e6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f15ee92dbb0 CR3: 0000000121a8d000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __raw_spin_trylock_bh include/linux/spinlock_api_smp.h:177 [inline]
 _raw_spin_trylock_bh+0xe5/0x150 kernel/locking/spinlock.c:146
 spin_trylock_bh include/linux/spinlock.h:411 [inline]
 tipc_sk_rcv+0x417/0x2c20 net/tipc/socket.c:2498
 tipc_node_xmit+0x36f/0xd80 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x277/0x390 net/tipc/node.c:1783
 tipc_sk_rcv+0x1a04/0x2c20 net/tipc/socket.c:2503
 tipc_node_xmit+0x36f/0xd80 net/tipc/node.c:1703
 tipc_sk_push_backlog net/tipc/socket.c:1316 [inline]
 tipc_sk_filter_connect net/tipc/socket.c:2257 [inline]
 tipc_sk_filter_rcv+0x19d7/0x3010 net/tipc/socket.c:2366
 tipc_sk_enqueue net/tipc/socket.c:2447 [inline]
 tipc_sk_rcv+0x7e7/0x2c20 net/tipc/socket.c:2499
 tipc_node_xmit+0x36f/0xd80 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x277/0x390 net/tipc/node.c:1783
 tipc_sk_backlog_rcv+0x174/0x220 net/tipc/socket.c:2414
 sk_backlog_rcv include/net/sock.h:1150 [inline]
 __release_sock+0x154/0x380 net/core/sock.c:2960
 release_sock net/core/sock.c:3536 [inline]
 sockopt_release_sock+0x95/0x1f0 net/core/sock.c:1067
 sk_setsockopt+0x218a/0x28b0 net/core/sock.c:1550
 sock_setsockopt+0x5a/0x70 net/core/sock.c:1557
 __sys_setsockopt+0x269/0x4e0 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:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f15ee96f359
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 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 d0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f15ee92e218 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f15ee92ecdc RCX: 00007f15ee96f359
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007f15eea20b58 R08: 0000000000000004 R09: 31203a6b63617473
R10: 00002000000001c0 R11: 0000000000000246 R12: 0000200000002700
R13: 00007f15eea20b50 R14: 00007f15eea20b5c R15: 0000200000000004
 </TASK>