watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor369:381] Modules linked in: CPU: 0 PID: 381 Comm: syz-executor369 Not tainted 5.10.231-syzkaller-00700-g4055d754db6f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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:1851 [inline] RIP: 0010:tipc_sk_rcv+0x17a8/0x1e30 net/tipc/socket.c:2498 Code: 8b 7c 24 28 48 83 ef 80 48 89 7c 24 28 be 04 00 00 00 e8 7b 43 0e fd bb ff ff ff ff f0 41 0f c1 9d 80 00 00 00 bf 01 00 00 00 <89> de e8 91 a9 d0 fc 83 fb 01 75 0f e8 d7 a5 d0 fc 4c 89 ef e8 df RSP: 0018:ffffc90000b86960 EFLAGS: 00000213 RAX: 0000000000000001 RBX: 0000000000000005 RCX: ffffffff849a1885 RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001 RBP: ffffc90000b86bf0 R08: dffffc0000000000 R09: ffffed10218160b1 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88810c0b0500 R14: 00000000e0494a93 R15: ffffc90000b86da0 FS: 00007fe2012636c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffd80fb7c0 CR3: 00000001059df000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_node_xmit_skb+0x153/0x1b0 net/tipc/node.c:1739 tipc_sk_rcv+0x1c0b/0x1e30 net/tipc/socket.c:2518 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+0x65/0x1b0 net/core/sock.c:3134 tipc_release+0xb6b/0x1440 net/tipc/socket.c:639 __sock_release net/socket.c:597 [inline] sock_close+0xdf/0x270 net/socket.c:1286 __fput+0x33d/0x7b0 fs/file_table.c:281 ____fput+0x15/0x20 fs/file_table.c:314 task_work_run+0x129/0x190 kernel/task_work.c:189 ptrace_notify+0x29e/0x350 kernel/signal.c:2280 ptrace_report_syscall include/linux/tracehook.h:66 [inline] tracehook_report_syscall_exit include/linux/tracehook.h:129 [inline] arch_syscall_exit_tracehook include/linux/entry-common.h:285 [inline] syscall_exit_work kernel/entry/common.c:239 [inline] syscall_exit_to_user_mode_prepare kernel/entry/common.c:266 [inline] syscall_exit_to_user_mode+0xf5/0x1a0 kernel/entry/common.c:272 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fe2012a3239 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 18 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:00007fe201263218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: 00000000000203a0 RBX: 00007fe20132e328 RCX: 00007fe2012a3239 RDX: 0000000000000000 RSI: 00000000200003c0 RDI: 0000000000000003 RBP: 00007fe20132e320 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe2012fb71c R13: 00007fe2012fa348 R14: 00007fe2012fb350 R15: 618a5986bea2420f