watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.2.932:3202] Modules linked in: CPU: 1 PID: 3202 Comm: syz.2.932 Not tainted 6.1.134-syzkaller-1169260-g646380b087a5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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: b7 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 f0 b6 13 04 fb f4 71 ff ff ff fb e9 6b ff ff ff e8 4e 67 b4 03 89 f9 80 e1 07 38 RSP: 0018:ffffc9000361f8a0 EFLAGS: 00000246 RAX: 0000000000000003 RBX: ffff88812c9a4a98 RCX: ffffffff84efb682 RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff88812c9a4a98 RBP: ffffc9000361f930 R08: dffffc0000000000 R09: ffffed1025934954 R10: ffffed1025934954 R11: 1ffff11025934953 R12: 1ffff1103ee20001 R13: ffff8881f7138bd4 R14: dffffc0000000000 R15: 1ffff920006c3f14 FS: 00005555571a8500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c0071e4000 CR3: 0000000114c5b000 CR4: 00000000003506a0 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: 0033:0x7f390258cde9 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:00007ffe25ed5f28 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f39027a7ba0 RCX: 00007f390258cde9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f39027a7ba0 R08: 0000000000000000 R09: 0000000325ed621f R10: 00007f39027a7ac0 R11: 0000000000000246 R12: 00000000000124a0 R13: 00007ffe25ed6020 R14: ffffffffffffffff R15: 00007ffe25ed6040 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3204 Comm: syz.2.932 Not tainted 6.1.134-syzkaller-1169260-g646380b087a5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline] RIP: 0010:write_comp_data kernel/kcov.c:245 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x10/0x90 kernel/kcov.c:313 Code: 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 b8 7d 47 2f 67 55 48 89 e5 48 8b 45 08 65 48 8b 15 c0 82 92 7e <65> 8b 0d c1 82 92 7e 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 RSP: 0018:ffffc9000364e730 EFLAGS: 00000246 RAX: ffffffff84c8a30b RBX: ffff888130a002c0 RCX: 0000000000000001 RDX: ffff88811f38d100 RSI: 00000000ff795e0d RDI: 0000000000000000 RBP: ffffc9000364e730 R08: 0000000000000004 R09: 0000000000000003 R10: fffff520006c9cd8 R11: 1ffff920006c9cd8 R12: ffff88811a214600 R13: dffffc0000000000 R14: ffffc9000364ebc0 R15: 00000000ff795e0d FS: 00007f390343d6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f390343cf98 CR3: 0000000114c5b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tipc_sk_rcv+0x28b/0x2cc0 net/tipc/socket.c:-1 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_rcv+0x1aa3/0x2cc0 net/tipc/socket.c:2501 tipc_node_xmit+0x257/0xd00 net/tipc/node.c:1703 tipc_sk_push_backlog+0x4dd/0x790 net/tipc/socket.c:1316 tipc_sk_conn_proto_rcv net/tipc/socket.c:1370 [inline] tipc_sk_proto_rcv+0x98d/0x1580 net/tipc/socket.c:2158 tipc_sk_filter_rcv+0x2a93/0x2c80 net/tipc/socket.c:2352 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 net/core/sock.c:3519 [inline] sockopt_release_sock+0x95/0x1f0 net/core/sock.c:1067 sk_setsockopt+0x1355/0x2590 net/core/sock.c:-1 sock_setsockopt+0x5a/0x70 net/core/sock.c:1552 __sys_setsockopt+0x270/0x4e0 net/socket.c:2274 __do_sys_setsockopt net/socket.c:2289 [inline] __se_sys_setsockopt net/socket.c:2286 [inline] __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2286 x64_sys_call+0x124/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:55 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f390258cde9 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:00007f390343d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f39027a6080 RCX: 00007f390258cde9 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007f390260e2a0 R08: 0000000000000004 R09: 0000000000000000 R10: 0000400000000540 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f39027a6080 R15: 00007ffe25ed5dc8