watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz-executor.0:3920] Modules linked in: CPU: 0 PID: 3920 Comm: syz-executor.0 Not tainted 6.1.145-syzkaller-1169986-g39fefc4d6aea #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 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+0xf2/0x140 arch/x86/kernel/kvm.c:1064 Code: ab 13 04 f4 eb 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07 40 38 f0 75 10 66 90 0f 00 2d b0 ab 13 04 fb f4 71 ff ff ff fb e9 6b ff ff ff e8 ae 68 b5 03 89 f9 80 e1 07 38 RSP: 0018:ffffc900047a78a0 EFLAGS: 00000246 RAX: 0000000000000003 RBX: ffff888122b42398 RCX: ffffffff84f0c5a2 RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888122b42398 RBP: ffffc900047a7930 R08: dffffc0000000000 R09: ffffed1024568474 R10: ffffed1024568474 R11: 1ffff11024568473 R12: 1ffff1103ee00001 R13: ffff8881f7038cd4 R14: dffffc0000000000 R15: 1ffff920008f4f14 FS: 000055557cc15480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000122a2e000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:603 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x690/0xc40 kernel/locking/qspinlock.c:511 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51 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+0xd8/0xe0 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] lock_sock_nested+0x92/0x280 net/core/sock.c:3507 lock_sock include/net/sock.h:1769 [inline] tipc_release+0xb2/0x1650 net/tipc/socket.c:639 __sock_release net/socket.c:652 [inline] sock_close+0xf1/0x290 net/socket.c:1390 __fput+0x1fc/0x8f0 fs/file_table.c:320 ____fput+0x15/0x20 fs/file_table.c:348 task_work_run+0x1db/0x240 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fdb0fc7cc9a Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24 RSP: 002b:00007ffee01d14e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007fdb0fc7cc9a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fdb0fdad980 R08: 0000001b30b60000 R09: 001e6d98a6f59c7c R10: 0000001e2f87cd5f R11: 0000000000000293 R12: 000000000000dcca R13: ffffffffffffffff R14: 00007fdb0f800000 R15: 000000000000d989 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3921 Comm: syz-executor.0 Not tainted 6.1.145-syzkaller-1169986-g39fefc4d6aea #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:msg_word net/tipc/msg.h:207 [inline] RIP: 0010:msg_destport net/tipc/msg.h:601 [inline] RIP: 0010:tipc_skb_peek_port net/tipc/msg.h:1227 [inline] RIP: 0010:tipc_sk_rcv+0x2c3/0x2cc0 net/tipc/socket.c:2491 Code: 42 80 3c 28 00 74 08 4c 89 ff e8 98 be ea fc 4d 8b 3f 49 83 c7 14 4c 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 86 1b 00 00 <45> 8b 3f 41 0f cf 83 7c 24 70 00 0f 84 ec 00 00 00 48 89 d8 48 c1 RSP: 0018:ffffc900047ee980 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8881231102c0 RCX: 0000000000000000 RDX: ffff88810e55d100 RSI: 00000000fa4709e5 RDI: 0000000000000000 RBP: ffffc900047eec10 R08: 0000000000000004 R09: 0000000000000003 R10: fffff520008fdd20 R11: 1ffff920008fdd20 R12: ffff88810e4fa300 R13: dffffc0000000000 R14: ffffc900047eedc0 R15: ffff88810706b8c4 FS: 00007fdb109ae6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdb1098dd58 CR3: 0000000122a2e000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tipc_node_xmit+0x257/0xd00 net/tipc/node.c:1703 tipc_node_xmit_skb+0xe9/0x130 net/tipc/node.c:1768 tipc_sk_rcv+0x1def/0x2cc0 net/tipc/socket.c:2522 tipc_node_xmit+0x257/0xd00 net/tipc/node.c:1703 tipc_sk_push_backlog net/tipc/socket.c:1316 [inline] tipc_sk_filter_connect net/tipc/socket.c:2255 [inline] tipc_sk_filter_rcv+0x155f/0x2c80 net/tipc/socket.c:2364 tipc_sk_enqueue net/tipc/socket.c:2445 [inline] tipc_sk_rcv+0x7d9/0x2cc0 net/tipc/socket.c:2497 tipc_node_xmit+0x257/0xd00 net/tipc/node.c:1703 tipc_node_xmit_skb net/tipc/node.c:1768 [inline] tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1783 tipc_sk_backlog_rcv+0x16f/0x1f0 net/tipc/socket.c:2412 sk_backlog_rcv include/net/sock.h:1131 [inline] __release_sock+0x154/0x380 net/core/sock.c:2945 release_sock+0x60/0x1c0 net/core/sock.c:3519 tipc_release+0xd32/0x1650 net/tipc/socket.c:652 __sock_release net/socket.c:652 [inline] sock_close+0xf1/0x290 net/socket.c:1390 __fput+0x1fc/0x8f0 fs/file_table.c:320 ____fput+0x15/0x20 fs/file_table.c:348 task_work_run+0x1db/0x240 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fdb0fc7dda9 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:00007fdb109ae0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007fdb0fdabf80 RCX: 00007fdb0fc7dda9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007fdb0fcca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fdb0fdabf80 R15: 00007ffee01d1418