watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.4.209:1064] Modules linked in: CPU: 0 PID: 1064 Comm: syz.4.209 Not tainted 5.10.236-syzkaller-1007372-gab07aeb2c93d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:102 [inline] RIP: 0010:__local_bh_enable_ip+0x53/0x80 kernel/softirq.c:201 Code: a9 00 ff ff 00 75 19 48 c7 c7 a0 9f c7 84 e8 94 ce 33 03 65 66 8b 05 5c dd c9 7e 66 85 c0 75 22 bf 01 00 00 00 e8 dd 83 08 00 <65> 8b 05 92 f3 c6 7e 85 c0 74 02 5d c3 e8 bf f0 c4 ff 5d c3 0f 0b RSP: 0018:ffffc90000dd6330 EFLAGS: 00000213 RAX: 0000000000000202 RBX: ffff88810df5a388 RCX: 0000000000000200 RDX: 0000000000000000 RSI: 0000000000000201 RDI: 00000000ffffffff RBP: ffffc90000dd6330 R08: dffffc0000000000 R09: ffffed1021beb472 R10: ffffed1021beb472 R11: 1ffff11021beb471 R12: dffffc0000000000 R13: 1ffff920001bac68 R14: ffffffff8459b45a R15: 0000000036a4fb69 FS: 00007ff2b0ff16c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff2b0ff0f98 CR3: 0000000128e44000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_trylock_bh include/linux/spinlock_api_smp.h:186 [inline] _raw_spin_trylock_bh+0xd5/0x130 kernel/locking/spinlock.c:143 spin_trylock_bh include/linux/spinlock.h:414 [inline] tipc_sk_rcv+0x41a/0x1ef0 net/tipc/socket.c:2492 tipc_node_xmit+0x256/0xcd0 net/tipc/node.c:1674 tipc_node_xmit_skb net/tipc/node.c:1739 [inline] tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1754 tipc_sk_rcv+0x19b9/0x1ef0 net/tipc/socket.c:2497 tipc_node_xmit+0x256/0xcd0 net/tipc/node.c:1674 tipc_sk_push_backlog+0x4dd/0x790 net/tipc/socket.c:1306 tipc_sk_conn_proto_rcv net/tipc/socket.c:1358 [inline] tipc_sk_proto_rcv+0x98d/0x1ac0 net/tipc/socket.c:2156 tipc_sk_filter_rcv+0x30ac/0x3850 net/tipc/socket.c:2350 tipc_sk_enqueue net/tipc/socket.c:2442 [inline] tipc_sk_rcv+0x7cc/0x1ef0 net/tipc/socket.c:2493 tipc_node_xmit+0x256/0xcd0 net/tipc/node.c:1674 tipc_node_xmit_skb net/tipc/node.c:1739 [inline] tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1754 tipc_sk_backlog_rcv+0x16f/0x1f0 net/tipc/socket.c:2410 sk_backlog_rcv include/net/sock.h:1052 [inline] __release_sock+0x146/0x360 net/core/sock.c:2583 release_sock+0x60/0x1b0 net/core/sock.c:3134 tipc_wait_for_rcvmsg+0x2ca/0x5e0 net/tipc/socket.c:1849 tipc_recvstream+0x1f7/0xe80 net/tipc/socket.c:2040 ____sys_recvmsg+0x291/0x580 net/socket.c:-1 ___sys_recvmsg+0x1af/0x4f0 net/socket.c:2637 __sys_recvmsg net/socket.c:2667 [inline] __do_sys_recvmsg net/socket.c:2677 [inline] __se_sys_recvmsg net/socket.c:2674 [inline] __x64_sys_recvmsg+0x1dd/0x2a0 net/socket.c:2674 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7ff2b15a1169 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:00007ff2b0ff1038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007ff2b17c9080 RCX: 00007ff2b15a1169 RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000000000000003 RBP: 00007ff2b1623a68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007ff2b17c9080 R15: 00007ffc9c519718 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1063 Comm: syz.4.209 Not tainted 5.10.236-syzkaller-1007372-gab07aeb2c93d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline] RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline] RIP: 0010:kvm_wait+0xc2/0x120 arch/x86/kernel/kvm.c:926 Code: 38 f0 75 26 41 f7 c4 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d 8f 9e 98 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d 80 9e 98 03 fb f4 <4c> 89 64 24 18 ff 74 24 18 9d 48 c7 44 24 20 0e 36 e0 45 4b c7 04 RSP: 0018:ffffc90000dc76e0 EFLAGS: 00000246 RAX: 0000000000000003 RBX: ffff88810df5a388 RCX: ffffffff814b0f6a RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff88810df5a388 RBP: ffffc90000dc7790 R08: dffffc0000000000 R09: ffffed1021beb472 R10: ffffed1021beb472 R11: 1ffff11021beb471 R12: 0000000000000246 R13: 1ffff11021beb471 R14: dffffc0000000000 R15: 1ffff920001b8ee0 FS: 00007ff2b10126c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff2b0ff1d58 CR3: 0000000128e44000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:564 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x714/0xb70 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline] queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock include/linux/spinlock.h:183 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0xd8/0xe0 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:359 [inline] lock_sock_nested+0x92/0x290 net/core/sock.c:3117 lock_sock include/net/sock.h:1648 [inline] tipc_sendstream+0x47/0x70 net/tipc/socket.c:1540 sock_sendmsg_nosec net/socket.c:652 [inline] __sock_sendmsg net/socket.c:664 [inline] ____sys_sendmsg+0x5a2/0x8c0 net/socket.c:2376 ___sys_sendmsg+0x1f0/0x260 net/socket.c:2430 __sys_sendmsg net/socket.c:2459 [inline] __do_sys_sendmsg net/socket.c:2468 [inline] __se_sys_sendmsg net/socket.c:2466 [inline] __x64_sys_sendmsg+0x1e2/0x2a0 net/socket.c:2466 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7ff2b15a1169 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:00007ff2b1012038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ff2b17c8fa0 RCX: 00007ff2b15a1169 RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000004 RBP: 00007ff2b1623a68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff2b17c8fa0 R15: 00007ffc9c519718