watchdog: BUG: soft lockup - CPU#1 stuck for 225s! [syz-executor.0:3068] Modules linked in: CPU: 1 PID: 3068 Comm: syz-executor.0 Tainted: G W 6.9.0-rc2-syzkaller-00207-ge8b0ccb2a787 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:_raw_spin_lock_bh+0xce/0x1b0 kernel/locking/spinlock.c:179 Code: 38 d2 a0 fc 43 0f b6 04 26 84 c0 0f 85 ad 00 00 00 8b 44 24 20 b9 01 00 00 00 f0 41 0f b1 4d 00 75 37 48 c7 04 24 0e 36 e0 45 <49> c7 04 1c 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 44 24 40 RSP: 0018:ffffc900024c66c0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 1ffff92000498cd8 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc900024c66e0 RBP: ffffc900024c6750 R08: 0000000000000003 R09: fffff52000498cdc R10: fffff52000498cdd R11: fffff52000498cdc R12: dffffc0000000000 R13: ffffc900024c6bb4 R14: 1ffff92000498cdc R15: ffffc900024c66e0 FS: 00007f21bec016c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f21bec01d58 CR3: 0000000117814000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: spin_lock_bh include/linux/spinlock.h:356 [inline] tipc_skb_peek_port net/tipc/msg.h:1225 [inline] tipc_sk_rcv+0x2a0/0x1b70 net/tipc/socket.c:2493 tipc_node_xmit+0x366/0xe90 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x36e/0x4d0 net/tipc/node.c:1781 tipc_sk_rcv+0x121a/0x1b70 net/tipc/socket.c:2503 tipc_node_xmit+0x366/0xe90 net/tipc/node.c:1701 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+0xafc/0x1780 net/tipc/socket.c:2160 tipc_sk_filter_rcv+0x31a2/0x33e0 net/tipc/socket.c:2354 tipc_sk_enqueue net/tipc/socket.c:2447 [inline] tipc_sk_rcv+0x819/0x1b70 net/tipc/socket.c:2499 tipc_node_xmit+0x366/0xe90 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x36e/0x4d0 net/tipc/node.c:1781 tipc_sk_backlog_rcv+0x18f/0x220 net/tipc/socket.c:2414 sk_backlog_rcv+0xb2/0x2a0 include/net/sock.h:1106 __release_sock net/core/sock.c:2984 [inline] release_sock+0xe6/0x2b0 net/core/sock.c:3550 sk_setsockopt+0x906/0x3240 sock_setsockopt+0x5d/0x70 net/core/sock.c:1549 do_sock_setsockopt+0x2fb/0x720 net/socket.c:2307 __sys_setsockopt net/socket.c:2334 [inline] __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt+0x13d/0x1e0 net/socket.c:2340 __x64_sys_setsockopt+0xc3/0xe0 net/socket.c:2340 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x62/0x100 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x71/0x79 RIP: 0033:0x7f21bde7dda9 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:00007f21bec010c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f21bdfac050 RCX: 00007f21bde7dda9 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007f21bdeca47a R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020000540 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f21bdfac050 R15: 00007ffc662c48c8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3067 Comm: syz-executor.0 Tainted: G W 6.9.0-rc2-syzkaller-00207-ge8b0ccb2a787 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] RIP: 0010:kvm_wait+0x1b6/0x230 arch/x86/kernel/kvm.c:1060 Code: 75 5d 45 0f b6 3f 45 0f b6 f6 44 89 ff 44 89 f6 e8 7f ee 41 00 45 38 f7 75 1f 66 90 e8 f3 ed 41 00 0f 00 2d ec af 2a 04 fb f4 d4 fe ff ff e8 e0 ed 41 00 e9 ca fe ff ff e8 d6 ed 41 00 fb e9 RSP: 0018:ffffc900024af760 EFLAGS: 000002d3 RAX: ffffffff813c5b8d RBX: 0000000000000200 RCX: ffff888117cd2200 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 RBP: ffffc900024af7f0 R08: ffffffff813c5b81 R09: 1ffff110230939d8 R10: ffffed10230939d9 R11: ffffed10230939d9 R12: dffffc0000000000 R13: 1ffff92000495eec R14: 0000000000000003 R15: 0000000000000003 FS: 00007f21bec226c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000117814000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:596 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x6e2/0xdb0 kernel/locking/qspinlock.c:511 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [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+0x141/0x1b0 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] lock_sock_nested+0x9b/0x310 net/core/sock.c:3538 lock_sock include/net/sock.h:1671 [inline] tipc_sendstream+0x4b/0x80 net/tipc/socket.c:1549 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x23b/0x290 net/socket.c:745 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x83/0x90 net/socket.c:2674 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x62/0x100 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x71/0x79 RIP: 0033:0x7f21bde7dda9 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:00007f21bec220c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f21bdfabf80 RCX: 00007f21bde7dda9 RDX: 0000000000000000 RSI: 00000000200003c0 RDI: 0000000000000004 RBP: 00007f21bdeca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f21bdfabf80 R15: 00007ffc662c48c8