watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.3.10646:6018] Modules linked in: CPU: 0 PID: 6018 Comm: syz.3.10646 Tainted: G W 5.10.218-syzkaller-00638-g3feee789f446 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline] RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline] RIP: 0010:kvm_wait+0xfc/0x150 arch/x86/kernel/kvm.c:926 Code: 38 f0 75 26 41 f7 c7 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d 95 52 d5 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d 86 52 d5 03 fb f4 <4c> 89 7c 24 18 ff 74 24 18 9d 48 c7 44 24 20 0e 36 e0 45 49 c7 04 RSP: 0018:ffffc90000f57680 EFLAGS: 00000246 RAX: 0000000000000003 RBX: 1ffff920001eaed4 RCX: ffffffff8150b5a4 RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffc90000f576c0 RBP: ffffc90000f57730 R08: dffffc0000000000 R09: ffffed1021ff4c72 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88810ffa6388 R14: 0000000000000003 R15: 0000000000000246 FS: 00007f9b4988b6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000010e28f000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:564 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x72f/0xc70 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [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:183 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:359 [inline] lock_sock_nested+0x92/0x300 net/core/sock.c:3117 lock_sock include/net/sock.h:1640 [inline] tipc_sendstream+0x47/0x70 net/tipc/socket.c:1540 sock_sendmsg_nosec net/socket.c:652 [inline] __sock_sendmsg net/socket.c:664 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2376 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2430 __sys_sendmsg net/socket.c:2459 [inline] __do_sys_sendmsg net/socket.c:2468 [inline] __se_sys_sendmsg+0x1b1/0x280 net/socket.c:2466 __x64_sys_sendmsg+0x7b/0x90 net/socket.c:2466 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f9b4a609bd9 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:00007f9b4988b048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f9b4a797f60 RCX: 00007f9b4a609bd9 RDX: 0000000000000000 RSI: 0000000020003280 RDI: 0000000000000004 RBP: 00007f9b4a678aa1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f9b4a797f60 R15: 00007ffe9d753328 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6019 Comm: syz.3.10646 Tainted: G W 5.10.218-syzkaller-00638-g3feee789f446 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:559 [inline] RIP: 0010:queued_spin_unlock arch/x86/include/asm/qspinlock.h:56 [inline] RIP: 0010:do_raw_spin_unlock include/linux/spinlock.h:212 [inline] RIP: 0010:__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:175 [inline] RIP: 0010:_raw_spin_unlock_bh+0x1d/0x60 kernel/locking/spinlock.c:207 Code: 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 53 48 89 fb 48 c7 c0 b0 77 6c 86 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 0c 48 c7 c7 b0 77 6c 86 e8 01 85 f6 fc 48 83 3d 79 RSP: 0018:ffffc9000116e748 EFLAGS: 00000a06 RAX: 1ffffffff0cd8ef6 RBX: ffffc9000116ebf4 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 000000007fe07579 RDI: ffffc9000116ebf4 RBP: ffffc9000116e750 R08: ffffffff84986d65 R09: 0000000000000003 R10: fffff5200022dcdc R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffc9000116ebe0 R14: 000000007fe07579 R15: ffffc9000116ebe0 FS: 00007f9b4986a6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9b49869fa8 CR3: 000000010e28f000 CR4: 00000000003506a0 DR0: 0000000020000240 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: spin_unlock_bh include/linux/spinlock.h:399 [inline] tipc_skb_peek_port net/tipc/msg.h:1258 [inline] tipc_sk_rcv+0x489/0x1e30 net/tipc/socket.c:2487 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_node_xmit_skb net/tipc/node.c:1739 [inline] tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1754 tipc_sk_rcv+0x177d/0x1e30 net/tipc/socket.c:2497 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_sk_push_backlog+0x4da/0x7b0 net/tipc/socket.c:1306 tipc_sk_conn_proto_rcv net/tipc/socket.c:1358 [inline] tipc_sk_proto_rcv+0xaa9/0x1db0 net/tipc/socket.c:2156 tipc_sk_filter_rcv+0x3603/0x3e00 net/tipc/socket.c:2350 tipc_sk_enqueue net/tipc/socket.c:2442 [inline] tipc_sk_rcv+0x8a1/0x1e30 net/tipc/socket.c:2493 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_node_xmit_skb net/tipc/node.c:1739 [inline] tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1754 tipc_sk_backlog_rcv+0x18b/0x210 net/tipc/socket.c:2410 sk_backlog_rcv include/net/sock.h:1050 [inline] __release_sock+0x148/0x410 net/core/sock.c:2583 release_sock net/core/sock.c:3134 [inline] sock_setsockopt+0x1e3b/0x2e00 net/core/sock.c:1257 __sys_setsockopt+0x441/0x870 net/socket.c:2142 __do_sys_setsockopt net/socket.c:2157 [inline] __se_sys_setsockopt net/socket.c:2154 [inline] __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2154 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f9b4a609bd9 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:00007f9b4986a048 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f9b4a798038 RCX: 00007f9b4a609bd9 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007f9b4a678aa1 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020000040 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f9b4a798038 R15: 00007ffe9d753328