RBP: 00007f1e36ca4f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1e36e77038 R14: 00007f1e36e76fa0 R15: 00007ffcc0d3cff8 watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.7.1147:4861] Modules linked in: CPU: 0 PID: 4861 Comm: syz.7.1147 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:rcu_preempt_read_enter kernel/rcu/tree_plugin.h:375 [inline] RIP: 0010:__rcu_read_lock+0x5/0x50 kernel/rcu/tree_plugin.h:398 Code: 65 ff 0d c6 9f ab 7e 49 bc 00 00 00 00 00 fc ff df 0f 85 c1 fb ff ff e8 f5 a8 a9 ff e9 b7 fb ff ff 0f 1f 40 00 55 48 89 e5 53 <65> 48 8b 1d 93 9f ab 7e 48 81 c3 4c 04 00 00 48 89 d8 48 c1 e8 03 RSP: 0018:ffffc9000129e8c8 EFLAGS: 00000246 RAX: 7f89064a07837900 RBX: ffff888113abc000 RCX: 0000000000000009 RDX: ffffc90003343000 RSI: ffffffff850827e0 RDI: ffffffff85634800 RBP: ffffc9000129e8d0 R08: 0000000000000004 R09: 0000000000000003 R10: fffff52000253d2c R11: 1ffff92000253d2c R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff88811f71fd30 R15: 00000000fef4210a FS: 00007f1e356886c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000003000 CR3: 0000000129a08000 CR4: 00000000003506b0 Call Trace: rcu_read_lock include/linux/rcupdate.h:747 [inline] tipc_sk_lookup+0xe8/0x5f0 net/tipc/socket.c:2998 tipc_sk_rcv+0x3fe/0x2c60 net/tipc/socket.c:2492 tipc_node_xmit+0x256/0xce0 net/tipc/node.c:1703 tipc_node_xmit_skb+0xe9/0x130 net/tipc/node.c:1768 tipc_sk_rcv+0x1d5d/0x2c60 net/tipc/socket.c:2522 tipc_node_xmit+0x256/0xce0 net/tipc/node.c:1703 tipc_sk_push_backlog net/tipc/socket.c:1316 [inline] tipc_sk_filter_connect net/tipc/socket.c:2255 [inline] tipc_sk_filter_rcv+0x151b/0x2c40 net/tipc/socket.c:2364 tipc_sk_enqueue net/tipc/socket.c:2445 [inline] tipc_sk_rcv+0x7b7/0x2c60 net/tipc/socket.c:2497 tipc_node_xmit+0x256/0xce0 net/tipc/node.c:1703 tipc_node_xmit_skb net/tipc/node.c:1768 [inline] tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1783 tipc_sk_backlog_rcv+0x16f/0x1f0 net/tipc/socket.c:2412 sk_backlog_rcv include/net/sock.h:1077 [inline] __release_sock+0x143/0x350 net/core/sock.c:2736 release_sock+0x60/0x1b0 net/core/sock.c:3287 tipc_release+0xd0b/0x1630 net/tipc/socket.c:652 __sock_release net/socket.c:649 [inline] sock_close+0xe0/0x270 net/socket.c:1336 __fput+0x20b/0x8b0 fs/file_table.c:311 ____fput+0x15/0x20 fs/file_table.c:339 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1e36c20749 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:00007f1e35688038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: 00000000000203a0 RBX: 00007f1e36e76fa0 RCX: 00007f1e36c20749 RDX: 0000000000000000 RSI: 00002000000003c0 RDI: 0000000000000006 RBP: 00007f1e36ca4f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1e36e77038 R14: 00007f1e36e76fa0 R15: 00007ffcc0d3cff8 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:51 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 arch/x86/kernel/process.c:729