watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz.4.193:5853] Modules linked in: irq event stamp: 58917 hardirqs last enabled at (58916): [] kvm_wait+0x23b/0x2c0 hardirqs last disabled at (58917): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1037 softirqs last enabled at (2728): [] tipc_wait_for_rcvmsg+0x33f/0x6a0 net/tipc/socket.c:1845 softirqs last disabled at (2732): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (2732): [] lock_sock_nested+0x6a/0x100 net/core/sock.c:3614 CPU: 0 UID: 0 PID: 5853 Comm: syz.4.193 Not tainted 6.11.0-syzkaller-10552-g3ed6be68913b #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 aa 3e 54 00 e8 c5 fd 5b 00 45 38 f7 75 15 66 90 e8 19 3e 54 00 0f 00 2d 52 bc c7 0a fb f4 50 fe ff ff e8 06 3e 54 00 fb e9 45 fe ff ff 89 d9 80 e1 07 38 RSP: 0018:ffffc9001694f4e0 EFLAGS: 00000246 RAX: ffffffff81407727 RBX: ffff88802f2cdcc0 RCX: 0000000000040000 RDX: ffffc9000a7db000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc9001694f5b0 R08: ffffffff942688c7 R09: 1ffffffff284d118 R10: dffffc0000000000 R11: fffffbfff284d119 R12: 1ffff92002d29ea0 R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003 FS: 00007f4d4b9376c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b326fdff8 CR3: 000000007b8a8000 CR4: 00000000003506f0 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_wait_for_rcvmsg+0x387/0x6a0 net/tipc/socket.c:1848 tipc_recvstream+0x296/0xf80 net/tipc/socket.c:2038 sock_recvmsg_nosec net/socket.c:1052 [inline] sock_recvmsg+0x22f/0x280 net/socket.c:1074 ____sys_recvmsg+0x1c6/0x480 net/socket.c:2822 ___sys_recvmsg net/socket.c:2864 [inline] __sys_recvmsg+0x2e6/0x3d0 net/socket.c:2894 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: 0033:0x7f4d4ab7dff9 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:00007f4d4b937038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007f4d4ad36058 RCX: 00007f4d4ab7dff9 RDX: 0000000000001f00 RSI: 0000000020000500 RDI: 000000000000000a RBP: 00007f4d4abf0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f4d4ad36058 R15: 00007ffe854f92a8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5848 Comm: syz.4.193 Not tainted 6.11.0-syzkaller-10552-g3ed6be68913b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:lockdep_hardirqs_on+0x6b/0x150 kernel/locking/lockdep.c:4453 Code: 8b 05 79 44 3e 74 85 c0 75 74 65 8b 05 26 41 3e 74 85 c0 75 69 83 3d 23 b3 77 0e 00 75 2e 48 c7 04 24 00 00 00 00 9c 8f 04 24 04 24 00 02 00 00 75 67 83 3d 05 b3 77 0e 00 75 10 48 8b 83 b8 RSP: 0018:ffffc9001696ee88 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff888026ab8000 RCX: ffffffff8170892a RDX: dffffc0000000000 RSI: ffffffff8c0adbc0 RDI: ffffffff8bc45533 RBP: 0000000000000000 R08: ffffffff942688c7 R09: 1ffffffff284d118 R10: dffffc0000000000 R11: fffffbfff284d119 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff8bc45533 R15: 0000000000000000 FS: 00007f4d4b9586c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200c1000 CR3: 000000007b8a8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: irqentry_exit+0x63/0x90 kernel/entry/common.c:357 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:rcu_read_unlock_special+0x88/0x550 kernel/rcu/tree_plugin.h:693 Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 59 60 88 7e 41 f7 c4 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a RSP: 0018:ffffc9001696ef60 EFLAGS: 00000206 RAX: 776698e7bb91bc00 RBX: 1ffff92002d2ddf4 RCX: ffffffff8170892a RDX: dffffc0000000000 RSI: ffffffff8c0aca40 RDI: ffffffff8c6100a0 RBP: ffffc9001696f038 R08: ffffffff942688c7 R09: 1ffffffff284d118 R10: dffffc0000000000 R11: fffffbfff284d119 R12: ffffffff8e93cd00 R13: ffff888026ab8460 R14: ffffc9001696efa0 R15: 1ffff92002d2ddf0 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:437 tipc_sk_filter_rcv+0x1438/0x3950 net/tipc/socket.c:2386 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_sendstream+0xcab/0x14e0 net/tipc/socket.c:1622 tipc_sendstream+0x55/0x70 net/tipc/socket.c:1546 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2603 ___sys_sendmsg net/socket.c:2657 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2686 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: 0033:0x7f4d4ab7dff9 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:00007f4d4b958038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f4d4ad35f80 RCX: 00007f4d4ab7dff9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 000000000000000b RBP: 00007f4d4abf0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f4d4ad35f80 R15: 00007ffe854f92a8