watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.0:25121] Modules linked in: CPU: 0 PID: 25121 Comm: syz-executor.0 Not tainted 5.10.237-syzkaller-1007474-gcf6ed0f1511d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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 ff 9d 98 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d f0 9d 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:ffffc90002d0f6e0 EFLAGS: 00000246 RAX: 0000000000000003 RBX: ffff88811a52b288 RCX: ffffffff814b15ba RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff88811a52b288 RBP: ffffc90002d0f790 R08: dffffc0000000000 R09: ffffed10234a5652 R10: ffffed10234a5652 R11: 1ffff110234a5651 R12: 0000000000000246 R13: 1ffff110234a5651 R14: dffffc0000000000 R15: 1ffff920005a1ee0 FS: 00007f9a2db8e6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9a2db8ed58 CR3: 000000011ceac000 CR4: 00000000003506b0 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: 0033:0x7f9a2e02dca9 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:00007f9a2db8e0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f9a2e15c050 RCX: 00007f9a2e02dca9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 00007f9a2e07947e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f9a2e15c050 R15: 00007ffe5207b9e8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 25120 Comm: syz-executor.0 Not tainted 5.10.237-syzkaller-1007474-gcf6ed0f1511d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:memcmp lib/string.c:942 [inline] RIP: 0010:bcmp+0x24/0xd0 lib/string.c:964 Code: 5f 5d c3 0f 1f 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 50 48 85 d2 0f 84 a5 00 00 00 48 bb 00 00 00 00 00 fc ff df 45 31 f6 <4a> 8d 04 37 48 89 c1 48 c1 e9 03 0f b6 0c 19 84 c9 75 2d 42 0f b6 RSP: 0018:ffffc900019ee700 EFLAGS: 00000202 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000050 RDX: 0000000000000004 RSI: ffffc900019ee7c0 RDI: ffff88811a52b55c RBP: ffffc900019ee730 R08: 0000000000000004 R09: 00000000019ee702 R10: fffff5200033dcf8 R11: 1ffff9200033dcf8 R12: 0000000000000004 R13: ffff88811a52b5e8 R14: 0000000000000003 R15: fffffffffffffc18 FS: 00007f9a2dbaf6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 000000011ceac000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rhashtable_compare include/linux/rhashtable.h:577 [inline] __rhashtable_lookup include/linux/rhashtable.h:602 [inline] rhashtable_lookup include/linux/rhashtable.h:638 [inline] tipc_sk_lookup+0x2f3/0x5f0 net/tipc/socket.c:2997 tipc_sk_rcv+0x3eb/0x1ef0 net/tipc/socket.c:2488 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 net/core/sock.c:3134 [inline] sock_setsockopt+0x125e/0x2350 net/core/sock.c:1257 __sys_setsockopt+0x265/0x460 net/socket.c:2142 __do_sys_setsockopt net/socket.c:2157 [inline] __se_sys_setsockopt net/socket.c:2154 [inline] __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2154 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f9a2e02dca9 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:00007f9a2dbaf0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f9a2e15bf80 RCX: 00007f9a2e02dca9 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007f9a2e07947e R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020000040 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f9a2e15bf80 R15: 00007ffe5207b9e8