rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (10499 ticks this GP) idle=e05c/1/0x4000000000000000 softirq=56849/56853 fqs=5116 rcu: hardirqs softirqs csw/system rcu: number: 14 0 0 rcu: cputime: 110 0 52379 ==> 52490(ms) rcu: (t=10500 jiffies g=56805 q=336078 ncpus=2) CPU: 1 UID: 0 PID: 24478 Comm: syz-executor418 Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:its_return_thunk+0x0/0x10 arch/x86/lib/retpoline.S:411 Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 e9 ab 96 bb f5 cc RSP: 0018:ffffc9000f806c40 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000005 RCX: ffffffff8b0dc333 RDX: ffff888023328000 RSI: ffffffff8b0dc340 RDI: 0000000000000005 RBP: ffff88801bf93a00 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88801bf93a80 R13: dffffc0000000000 R14: ffff88801bf93a00 R15: 1ffff92001f00d93 FS: 00007f32c14fd6c0(0000) GS:ffff888124ada000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000005680 CR3: 000000007a0f1000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_unlock include/linux/rcupdate.h:869 [inline] tipc_sk_lookup+0x410/0x930 net/tipc/socket.c:3001 tipc_sk_rcv+0x2be/0x1bd0 net/tipc/socket.c:2490 tipc_node_xmit+0x232/0xfc0 net/tipc/node.c:1701 tipc_node_xmit_skb+0xef/0x160 net/tipc/node.c:1766 tipc_sk_rcv+0x16b7/0x1bd0 net/tipc/socket.c:2520 tipc_node_xmit+0x232/0xfc0 net/tipc/node.c:1701 tipc_sk_push_backlog+0x318/0x9e0 net/tipc/socket.c:1312 tipc_sk_filter_connect net/tipc/socket.c:2253 [inline] tipc_sk_filter_rcv+0x1397/0x3020 net/tipc/socket.c:2362 tipc_sk_enqueue net/tipc/socket.c:2443 [inline] tipc_sk_rcv+0xfed/0x1bd0 net/tipc/socket.c:2495 tipc_node_xmit+0x232/0xfc0 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x177/0x3c0 net/tipc/node.c:1781 tipc_sk_backlog_rcv+0x16f/0x1e0 net/tipc/socket.c:2410 sk_backlog_rcv include/net/sock.h:1132 [inline] __release_sock+0x362/0x400 net/core/sock.c:3163 release_sock+0x5a/0x220 net/core/sock.c:3717 tipc_release+0x8c3/0x1640 net/tipc/socket.c:650 __sock_release+0xb0/0x270 net/socket.c:647 sock_close+0x1c/0x30 net/socket.c:1391 __fput+0x3ff/0xb70 fs/file_table.c:465 task_work_run+0x150/0x240 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x260 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f32c1544a19 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 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:00007f32c14fd218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: 00000000000203a0 RBX: 00007f32c15d0328 RCX: 00007f32c1544a19 RDX: 0000000000000000 RSI: 00002000000003c0 RDI: 0000000000000003 RBP: 00007f32c15d0320 R08: 0000000000000000 R09: 0000000000000000 R10: 00002000000003c0 R11: 0000000000000246 R12: 00007f32c159d504 R13: 0000200000006a80 R14: 0000200000006bd0 R15: 0000200000006bc0