watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.0.237:1122] CPU#0 Utilization every 22s during lockup: #1: 100% system, 0% softirq, 1% hardirq, 0% idle #2: 100% system, 0% softirq, 1% hardirq, 0% idle #3: 100% system, 0% softirq, 1% hardirq, 0% idle #4: 100% system, 0% softirq, 1% hardirq, 0% idle #5: 100% system, 0% softirq, 1% hardirq, 0% idle Modules linked in: CPU: 0 UID: 0 PID: 1122 Comm: syz.0.237 Not tainted 6.11.0-syzkaller-11728-gad46e8f95e93 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:106 [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 df 8d 40 00 45 38 f7 75 1f 66 90 e8 53 8d 40 00 0f 00 2d cc 8c 4a 04 fb f4 d4 fe ff ff e8 40 8d 40 00 e9 ca fe ff ff e8 36 8d 40 00 fb e9 RSP: 0018:ffffc90001e47700 EFLAGS: 000002d3 RAX: ffffffff813c856d RBX: 0000000000000200 RCX: ffff8881139f8000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 RBP: ffffc90001e47790 R08: ffffffff813c8561 R09: 1ffff1102257f948 R10: ffffed102257f949 R11: ffffed102257f949 R12: dffffc0000000000 R13: 1ffff920003c8ee0 R14: 0000000000000003 R15: 0000000000000003 FS: 00007fb7ae6446c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000110f0e000 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:466 [inline] __pv_queued_spin_lock_slowpath+0x97d/0xfe0 kernel/locking/qspinlock.c:508 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:3614 lock_sock include/net/sock.h:1609 [inline] tipc_sendstream+0x4b/0x80 net/tipc/socket.c:1545 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x23b/0x290 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2602 ___sys_sendmsg net/socket.c:2656 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2685 __do_sys_sendmsg net/socket.c:2694 [inline] __se_sys_sendmsg net/socket.c:2692 [inline] __x64_sys_sendmsg+0x83/0x90 net/socket.c:2692 x64_sys_call+0x2626/0x2d80 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x54/0xf0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fb7ad77cef9 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:00007fb7ae644038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb7ad935f80 RCX: 00007fb7ad77cef9 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000004 RBP: 00007fb7ad7ef046 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb7ad935f80 R15: 00007ffcc76e2cd8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 1123 Comm: syz.0.237 Not tainted 6.11.0-syzkaller-11728-gad46e8f95e93 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:skb_queue_len include/linux/skbuff.h:2203 [inline] RIP: 0010:tipc_sk_rcv+0x1319/0x1c00 net/tipc/socket.c:2488 Code: 89 ef e8 da 05 fb fe eb 19 bf 01 00 00 00 89 de e8 7c 07 47 fc 85 db 0f 8e 23 03 00 00 e8 2f 03 47 fc 48 8b 84 24 80 00 00 00 <42> 0f b6 04 20 84 c0 48 8b 54 24 28 0f 85 1a 04 00 00 83 3a 00 0f RSP: 0018:ffffc90001e5e780 EFLAGS: 00000293 RAX: 1ffff920003cbd7a RBX: 0000000000000005 RCX: ffff8881139fa200 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001 RBP: ffffc90001e5e9d0 R08: ffffffff85360f84 R09: 1ffff1102257f930 R10: ffffed102257f931 R11: ffffed102257f931 R12: dffffc0000000000 R13: ffff888112bfc900 R14: 00000000519ef169 R15: ffffc90001e5ebc0 FS: 00007fb7ae6236c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb7ae622f98 CR3: 0000000110f0e000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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+0x12b2/0x1c00 net/tipc/socket.c:2499 tipc_node_xmit+0x366/0xe90 net/tipc/node.c:1701 tipc_sk_push_backlog+0x4da/0x7b0 net/tipc/socket.c:1312 tipc_sk_conn_proto_rcv net/tipc/socket.c:1366 [inline] tipc_sk_proto_rcv+0xafe/0x1790 net/tipc/socket.c:2156 tipc_sk_filter_rcv+0x31a2/0x33e0 net/tipc/socket.c:2350 tipc_sk_enqueue net/tipc/socket.c:2443 [inline] tipc_sk_rcv+0x819/0x1c00 net/tipc/socket.c:2495 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:2410 sk_backlog_rcv+0xb2/0x2a0 include/net/sock.h:1113 __release_sock net/core/sock.c:3072 [inline] release_sock+0xe6/0x2b0 net/core/sock.c:3626 sockopt_release_sock net/core/sock.c:1134 [inline] sk_setsockopt+0x2818/0x3300 net/core/sock.c:1626 sock_setsockopt+0x5d/0x70 net/core/sock.c:1633 do_sock_setsockopt+0x2fb/0x720 net/socket.c:2325 __sys_setsockopt net/socket.c:2352 [inline] __do_sys_setsockopt net/socket.c:2361 [inline] __se_sys_setsockopt+0x130/0x1e0 net/socket.c:2358 __x64_sys_setsockopt+0xc3/0xe0 net/socket.c:2358 x64_sys_call+0x2744/0x2d80 arch/x86/include/generated/asm/syscalls_64.h:55 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x54/0xf0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fb7ad77cef9 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:00007fb7ae623038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fb7ad936058 RCX: 00007fb7ad77cef9 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007fb7ad7ef046 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020000540 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fb7ad936058 R15: 00007ffcc76e2cd8