watchdog: BUG: soft lockup - CPU#1 stuck for 225s! [syz-executor.0:396] Modules linked in: CPU: 1 PID: 396 Comm: syz-executor.0 Not tainted 6.1.112-syzkaller-1151964-g4a105e4e1c7a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:__refcount_sub_and_test include/linux/refcount.h:277 [inline] RIP: 0010:__refcount_dec_and_test include/linux/refcount.h:315 [inline] RIP: 0010:refcount_dec_and_test include/linux/refcount.h:333 [inline] RIP: 0010:sock_put include/net/sock.h:2040 [inline] RIP: 0010:tipc_sk_rcv+0x132c/0x1c40 net/tipc/socket.c:2502 Code: 7a f2 fe ff 48 8b 7c 24 30 48 83 ef 80 48 89 7c 24 30 be 04 00 00 00 e8 32 92 c0 fc bb ff ff ff ff f0 41 0f c1 9d 80 00 00 00 01 00 00 00 89 de e8 18 28 79 fc 83 fb 01 75 0f e8 5e 24 79 fc RSP: 0018:ffffc900015067c0 EFLAGS: 00000213 RAX: 0000000000000001 RBX: 0000000000000005 RCX: ffffffff84fc7f8e RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888125d84580 RBP: ffffc90001506a10 R08: dffffc0000000000 R09: ffffed1024bb08b1 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888125d84500 R14: 00000000dc998ec9 R15: ffffc90001506c00 FS: 00007f8f4fd856c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8f4f1025a0 CR3: 00000001258be000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tipc_node_xmit+0x34e/0xe40 net/tipc/node.c:1703 tipc_node_xmit_skb net/tipc/node.c:1768 [inline] tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1783 tipc_sk_rcv+0x1306/0x1c40 net/tipc/socket.c:2501 tipc_node_xmit+0x34e/0xe40 net/tipc/node.c:1703 tipc_sk_push_backlog+0x4da/0x7b0 net/tipc/socket.c:1316 tipc_sk_conn_proto_rcv net/tipc/socket.c:1370 [inline] tipc_sk_proto_rcv+0xad5/0x1750 net/tipc/socket.c:2158 tipc_sk_filter_rcv+0x3155/0x3390 net/tipc/socket.c:2352 tipc_sk_enqueue net/tipc/socket.c:2445 [inline] tipc_sk_rcv+0x815/0x1c40 net/tipc/socket.c:2497 tipc_node_xmit+0x34e/0xe40 net/tipc/node.c:1703 tipc_node_xmit_skb net/tipc/node.c:1768 [inline] tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1783 tipc_sk_backlog_rcv+0x18b/0x210 net/tipc/socket.c:2412 sk_backlog_rcv include/net/sock.h:1129 [inline] __release_sock+0x145/0x410 net/core/sock.c:2942 release_sock net/core/sock.c:3516 [inline] sockopt_release_sock+0x9a/0x1f0 net/core/sock.c:1067 sk_setsockopt+0x165d/0x3160 sock_setsockopt+0x59/0x70 net/core/sock.c:1549 __sys_setsockopt+0x423/0x8b0 net/socket.c:2269 __do_sys_setsockopt net/socket.c:2284 [inline] __se_sys_setsockopt net/socket.c:2281 [inline] __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2281 x64_sys_call+0x1a2/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:55 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f8f4f07de69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8f4fd850c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f8f4f1ac050 RCX: 00007f8f4f07de69 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007f8f4f0ca47a R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020000540 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f8f4f1ac050 R15: 00007ffcc83b09b8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 395 Comm: syz-executor.0 Not tainted 6.1.112-syzkaller-1151964-g4a105e4e1c7a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:trylock_clear_pending kernel/locking/qspinlock_paravirt.h:121 [inline] RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:435 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x5e4/0xda0 kernel/locking/qspinlock.c:511 Code: 10 c6 00 00 48 8b 44 24 18 0f b6 04 10 84 c0 0f 85 48 01 00 00 48 8b 44 24 08 c6 00 01 bb 00 80 ff ff eb 06 f3 90 ff c3 74 5d <41> 0f b6 04 14 84 c0 75 36 41 80 3f 00 75 eb 4c 89 ff be 02 00 00 RSP: 0018:ffffc900014a7820 EFLAGS: 00000282 RAX: 0000000000000000 RBX: 00000000ffffe53e RCX: ffffffff85216c9c RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888125d84598 RBP: ffffc900014a7910 R08: dffffc0000000000 R09: ffffed1024bb08b4 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11024bb08b3 R13: ffff8881f71d2700 R14: 1ffff1103edc0001 R15: ffff888125d84598 FS: 00007f8f4fda66c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8f4fd85d58 CR3: 00000001258be000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] 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+0x139/0x1b0 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] lock_sock_nested+0x92/0x300 net/core/sock.c:3504 lock_sock include/net/sock.h:1761 [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+0x5d3/0x9a0 net/socket.c:2504 ___sys_sendmsg net/socket.c:2558 [inline] __sys_sendmsg+0x2a9/0x390 net/socket.c:2587 __do_sys_sendmsg net/socket.c:2596 [inline] __se_sys_sendmsg net/socket.c:2594 [inline] __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2594 x64_sys_call+0x16a/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f8f4f07de69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8f4fda60c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8f4f1abf80 RCX: 00007f8f4f07de69 RDX: 0000000000000000 RSI: 0000000020000780 RDI: 0000000000000004 RBP: 00007f8f4f0ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f8f4f1abf80 R15: 00007ffcc83b09b8