watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.2.518:7293] Modules linked in: irq event stamp: 96481 hardirqs last enabled at (96480): [] kvm_wait+0x23b/0x2c0 hardirqs last disabled at (96481): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1037 softirqs last enabled at (41770): [] __tipc_sendstream+0x66c/0x14e0 net/tipc/socket.c:1582 softirqs last disabled at (41774): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (41774): [] lock_sock_nested+0x6a/0x100 net/core/sock.c:3614 CPU: 1 UID: 0 PID: 7293 Comm: syz.2.518 Not tainted 6.12.0-rc1-syzkaller-00164-g5bd48a3a14df #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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+0x250/0x2c0 arch/x86/kernel/kvm.c:1060 Code: 3b 45 0f b6 f6 44 89 ff 44 89 f6 e8 da 3c 54 00 e8 55 00 5c 00 45 38 f7 75 15 66 90 e8 49 3c 54 00 0f 00 2d 52 8d c7 0a fb f4 50 fe ff ff e8 36 3c 54 00 fb e9 45 fe ff ff 89 d9 80 e1 07 38 RSP: 0018:ffffc9000318f500 EFLAGS: 00000246 RAX: ffffffff8140a727 RBX: ffff8880647539c0 RCX: 0000000000040000 RDX: ffffc9000df8c000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc9000318f5d0 R08: ffffffff942c58ff R09: 1ffffffff2858b1f R10: dffffc0000000000 R11: fffffbfff2858b20 R12: 1ffff92000631ea4 R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003 FS: 00007f4c1dcdd6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020b24000 CR3: 000000005db58000 CR4: 00000000003526f0 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+0x8d0/0xdb0 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline] queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116 spin_lock_bh include/linux/spinlock.h:356 [inline] lock_sock_nested+0x6a/0x100 net/core/sock.c:3614 lock_sock include/net/sock.h:1609 [inline] __tipc_sendstream+0x709/0x14e0 net/tipc/socket.c:1582 tipc_sendstream+0x55/0x70 net/tipc/socket.c:1546 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 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_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4c1cf7dff9 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:00007f4c1dcdd038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f4c1d136208 RCX: 00007f4c1cf7dff9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000006 RBP: 00007f4c1cff0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f4c1d136208 R15: 00007fff872a65e8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 7292 Comm: syz.2.518 Not tainted 6.12.0-rc1-syzkaller-00164-g5bd48a3a14df #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__this_cpu_preempt_check+0x0/0x20 lib/smp_processor_id.c:65 Code: d1 fc ff e8 32 7d ff ff eb a8 e8 4b e0 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 89 fe 48 c7 c7 e0 fb 60 8c e9 bd fe ff ff 66 2e 0f RSP: 0018:ffffc90000007fd0 EFLAGS: 00000002 RAX: 0000000000010201 RBX: ffffc9000319ed78 RCX: ffffffff9a3cc903 RDX: 0000000000000000 RSI: ffffffff8c0550c0 RDI: ffffffff8c09c080 RBP: 0000000000000000 R08: ffffffff901ce46f R09: 1ffffffff2039c8d R10: dffffc0000000000 R11: ffffc90000007ff8 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f4c1dcfe6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020ac3000 CR3: 000000005db58000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: irq_enter_rcu+0x29/0xe0 kernel/softirq.c:596 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0x96/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:rcu_read_unlock_special+0x88/0x570 kernel/rcu/tree_plugin.h:693 Code: f1 f1 f1 00 f2 f2 f2 49 89 04 14 66 41 c7 44 14 09 f3 f3 41 c6 44 14 0b f3 65 44 8b 3d 39 27 88 7e 41 f7 c7 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 22 00 00 00 00 66 42 c7 44 22 RSP: 0018:ffffc9000319ee20 EFLAGS: 00000206 RAX: 1c48b9522d11c200 RBX: 1ffff92000633dcc RCX: ffffffff8170c42a RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: ffffffff8c60fbe0 RBP: ffffc9000319eef8 R08: ffffffff942c58ff R09: 1ffffffff2858b1f R10: dffffc0000000000 R11: fffffbfff2858b20 R12: 1ffff92000633dc8 R13: ffff88805eeb0460 R14: ffffc9000319ee60 R15: ffffffff8e93cc00 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:437 tipc_sk_conn_proto_rcv net/tipc/socket.c:1371 [inline] tipc_sk_proto_rcv+0xc76/0x19a0 net/tipc/socket.c:2156 tipc_sk_filter_rcv+0x36a8/0x3950 net/tipc/socket.c:2350 tipc_sk_enqueue net/tipc/socket.c:2443 [inline] tipc_sk_rcv+0x8b3/0x1d20 net/tipc/socket.c:2495 tipc_node_xmit+0x1e0/0xfa0 net/tipc/node.c:1701 tipc_node_xmit_skb+0x149/0x1b0 net/tipc/node.c:1766 tipc_recvstream+0x8ae/0xf80 net/tipc/socket.c:2093 sock_recvmsg_nosec net/socket.c:1051 [inline] sock_recvmsg+0x22f/0x280 net/socket.c:1073 ____sys_recvmsg+0x1c6/0x480 net/socket.c:2821 ___sys_recvmsg net/socket.c:2863 [inline] __sys_recvmsg+0x2e6/0x3d0 net/socket.c:2893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4c1cf7dff9 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:00007f4c1dcfe038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007f4c1d136130 RCX: 00007f4c1cf7dff9 RDX: 0000000000001f00 RSI: 0000000020000500 RDI: 0000000000000005 RBP: 00007f4c1cff0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f4c1d136130 R15: 00007fff872a65e8