watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.3.391:1807] Modules linked in: CPU: 0 PID: 1807 Comm: syz.3.391 Not tainted 5.15.156-syzkaller-00821-g29d153aabd54 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:590 [inline] RIP: 0010:queued_spin_unlock arch/x86/include/asm/qspinlock.h:56 [inline] RIP: 0010:do_raw_spin_unlock include/linux/spinlock.h:216 [inline] RIP: 0010:__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:175 [inline] RIP: 0010:_raw_spin_unlock_bh+0x37/0x60 kernel/locking/spinlock.c:210 Code: ad 86 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 0c 48 c7 c7 98 58 ad 86 e8 71 db cc fc 48 83 3d b1 86 c7 01 00 <74> 1b 48 89 df e8 23 47 6f fc 66 90 48 8b 7d 08 be 01 02 00 00 e8 RSP: 0018:ffffc90000ed6828 EFLAGS: 00000286 RAX: 1ffffffff0d5ab13 RBX: ffffc90000ed6c94 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 000000006a49cdb6 RDI: ffffc90000ed6c94 RBP: ffffc90000ed6830 R08: ffffffff84cba958 R09: 0000000000000003 R10: fffff520001dacf8 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffc90000ed6c80 R14: 000000006a49cdb6 R15: ffffc90000ed6c80 FS: 00007f99b6c216c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200042c0 CR3: 0000000129a27000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: spin_unlock_bh include/linux/spinlock.h:408 [inline] tipc_skb_peek_port net/tipc/msg.h:1258 [inline] tipc_sk_rcv+0x449/0x1b50 net/tipc/socket.c:2491 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+0x1212/0x1b50 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+0xad0/0x1750 net/tipc/socket.c:2158 tipc_sk_filter_rcv+0x3152/0x3380 net/tipc/socket.c:2352 tipc_sk_enqueue net/tipc/socket.c:2445 [inline] tipc_sk_rcv+0x80c/0x1b50 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:1069 [inline] __release_sock+0x145/0x410 net/core/sock.c:2730 release_sock net/core/sock.c:3281 [inline] sock_setsockopt+0x181a/0x2eb0 net/core/sock.c:1380 __sys_setsockopt+0x423/0x840 net/socket.c:2194 __do_sys_setsockopt net/socket.c:2209 [inline] __se_sys_setsockopt net/socket.c:2206 [inline] __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2206 x64_sys_call+0x1a2/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:55 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f99b7fa3e79 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:00007f99b6c21038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f99b813ff80 RCX: 00007f99b7fa3e79 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000006 RBP: 00007f99b801193e R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020000280 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f99b813ff80 R15: 00007fffae2895e8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1808 Comm: syz.3.391 Not tainted 5.15.156-syzkaller-00821-g29d153aabd54 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 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+0x147/0x180 arch/x86/kernel/kvm.c:918 Code: 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 34 41 0f b6 45 00 44 38 f0 75 10 66 90 0f 00 2d 6b ef 12 04 fb f4 24 ff ff ff fb e9 1e ff ff ff 44 89 e9 80 e1 07 38 c1 7c a3 4c RSP: 0018:ffffc90000ce7660 EFLAGS: 00000246 RAX: 0000000000000003 RBX: 1ffff9200019ced0 RCX: ffffffff81552d3f RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888116297788 RBP: ffffc90000ce7710 R08: dffffc0000000000 R09: ffffed1022c52ef2 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888116297788 R14: 0000000000000003 R15: 1ffff9200019ced4 FS: 00007f99b6c006c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020784000 CR3: 0000000129a27000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:597 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x6bc/0xc40 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] 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+0x139/0x1b0 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:368 [inline] lock_sock_nested+0x97/0x300 net/core/sock.c:3269 lock_sock include/net/sock.h:1676 [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+0x59e/0x8f0 net/socket.c:2431 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2485 __sys_sendmsg net/socket.c:2514 [inline] __do_sys_sendmsg net/socket.c:2523 [inline] __se_sys_sendmsg+0x19a/0x260 net/socket.c:2521 __x64_sys_sendmsg+0x7b/0x90 net/socket.c:2521 x64_sys_call+0x16a/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f99b7fa3e79 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:00007f99b6c00038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f99b8140058 RCX: 00007f99b7fa3e79 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000007 RBP: 00007f99b801193e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f99b8140058 R15: 00007fffae2895e8