watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.7.3181:11959] Modules linked in: CPU: 0 PID: 11959 Comm: syz.7.3181 Tainted: G W 5.10.233-syzkaller-00881-gfbe98d68b6b3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:__refcount_sub_and_test include/linux/refcount.h:277 [inline] RIP: 0010:__refcount_dec_and_test include/linux/refcount.h:315 [inline] RIP: 0010:refcount_dec_and_test include/linux/refcount.h:333 [inline] RIP: 0010:sock_put include/net/sock.h:1857 [inline] RIP: 0010:tipc_sk_rcv+0x17a3/0x1e30 net/tipc/socket.c:2498 Code: 93 fc fe ff 48 8b 7c 24 28 48 83 ef 80 48 89 7c 24 28 be 04 00 00 00 e8 eb 39 0e fd bb ff ff ff ff f0 41 0f c1 9d 80 00 00 00 01 00 00 00 89 de e8 b1 9c d0 fc 83 fb 01 75 0f e8 f7 98 d0 fc RSP: 0018:ffffc90000e8e900 EFLAGS: 00000213 RAX: 0000000000000001 RBX: 0000000000000005 RCX: ffffffff849a2585 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888121f21e80 RBP: ffffc90000e8eb90 R08: dffffc0000000000 R09: ffffed10243e43d1 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888121f21e00 R14: 00000000662f818d R15: ffffc90000e8ed80 FS: 00007f5ab79c06c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5ab79bff98 CR3: 000000011a060000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_node_xmit_skb net/tipc/node.c:1739 [inline] tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1754 tipc_sk_rcv+0x177d/0x1e30 net/tipc/socket.c:2497 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_sk_push_backlog net/tipc/socket.c:1306 [inline] tipc_sk_filter_connect net/tipc/socket.c:2253 [inline] tipc_sk_filter_rcv+0x1da8/0x3e00 net/tipc/socket.c:2362 tipc_sk_enqueue net/tipc/socket.c:2442 [inline] tipc_sk_rcv+0x8a1/0x1e30 net/tipc/socket.c:2493 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_node_xmit_skb net/tipc/node.c:1739 [inline] tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1754 tipc_sk_backlog_rcv+0x18b/0x210 net/tipc/socket.c:2410 sk_backlog_rcv include/net/sock.h:1052 [inline] __release_sock+0x148/0x410 net/core/sock.c:2583 release_sock net/core/sock.c:3134 [inline] sock_setsockopt+0x1e3b/0x2e00 net/core/sock.c:1257 __sys_setsockopt+0x441/0x870 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+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f5ab9376da9 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:00007f5ab79c0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f5ab9590080 RCX: 00007f5ab9376da9 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000087 RBP: 00007f5ab93f82a0 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020000540 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5ab9590080 R15: 00007fffc0609598 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline] NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry drivers/acpi/processor_idle.c:567 [inline] NMI backtrace for cpu 1 skipped: idling at acpi_idle_enter+0x416/0x760 drivers/acpi/processor_idle.c:702