rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (10503 ticks this GP) idle=0204/1/0x4000000000000000 softirq=15040/15042 fqs=5225 rcu: hardirqs softirqs csw/system rcu: number: 5420 0 0 rcu: cputime: 230 0 52127 ==> 52490(ms) rcu: (t=10500 jiffies g=10861 q=250 ncpus=2) CPU: 1 UID: 0 PID: 5843 Comm: syz-executor259 Not tainted 6.16.0-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:rht_bucket_index include/linux/rhashtable.h:122 [inline] RIP: 0010:rht_key_hashfn include/linux/rhashtable.h:161 [inline] RIP: 0010:__rhashtable_lookup include/linux/rhashtable.h:604 [inline] RIP: 0010:rhashtable_lookup include/linux/rhashtable.h:646 [inline] RIP: 0010:tipc_sk_lookup+0x232/0x920 net/tipc/socket.c:2998 Code: 89 64 24 30 48 89 74 24 28 48 8d 7a 08 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 48 89 54 24 08 0f 85 10 04 00 00 44 8b 62 08 <48> 89 d0 48 c1 e8 03 42 0f b6 04 30 84 c0 4d 89 f5 0f 85 1a 04 00 RSP: 0018:ffffc9000405e3e0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88802f433c00 RDX: ffff888030df6000 RSI: 00000000cf94889a RDI: ffff888030df6008 RBP: ffffc9000405e4d0 R08: 0000000000000000 R09: ffffffff8b06bb58 R10: dffffc0000000000 R11: fffffbfff1f4167f R12: 00000000ce6f2e2d R13: ffff888030df6000 R14: dffffc0000000000 R15: ffff88814c9f114a FS: 00007f17486256c0(0000) GS:ffff888125d57000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1748604d58 CR3: 000000007519c000 CR4: 00000000003526f0 Call Trace: tipc_sk_rcv+0x3f9/0x2ba0 net/tipc/socket.c:2490 tipc_node_xmit+0x1c9/0xe90 net/tipc/node.c:1701 tipc_node_xmit_skb+0xf4/0x150 net/tipc/node.c:1766 tipc_sk_rcv+0x29c4/0x2ba0 net/tipc/socket.c:2520 tipc_node_xmit+0x1c9/0xe90 net/tipc/node.c:1701 tipc_sk_push_backlog net/tipc/socket.c:1312 [inline] tipc_sk_filter_connect net/tipc/socket.c:2253 [inline] tipc_sk_filter_rcv+0x12a0/0x30b0 net/tipc/socket.c:2362 tipc_sk_enqueue net/tipc/socket.c:2443 [inline] tipc_sk_rcv+0x8a5/0x2ba0 net/tipc/socket.c:2495 tipc_node_xmit+0x1c9/0xe90 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x2a0/0x3b0 net/tipc/node.c:1781 tipc_sk_backlog_rcv+0x1a1/0x230 net/tipc/socket.c:2410 sk_backlog_rcv include/net/sock.h:1148 [inline] __release_sock+0x24c/0x350 net/core/sock.c:3213 release_sock+0x5f/0x1f0 net/core/sock.c:3767 tipc_release+0x16e2/0x2160 net/tipc/socket.c:650 __sock_release net/socket.c:647 [inline] sock_close+0xc3/0x240 net/socket.c:1391 __fput+0x449/0xa70 fs/file_table.c:465 task_work_run+0x1d1/0x260 kernel/task_work.c:227 ptrace_notify+0x281/0x2c0 kernel/signal.c:2520 ptrace_report_syscall include/linux/ptrace.h:415 [inline] ptrace_report_syscall_exit include/linux/ptrace.h:477 [inline] syscall_exit_work+0xc6/0x1d0 kernel/entry/common.c:173 syscall_exit_to_user_mode_work include/linux/entry-common.h:412 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2ad/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f174866ca29 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:00007f1748625218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: 00000000000203a0 RBX: 00007f17486f8328 RCX: 00007f174866ca29 RDX: 0000000000000000 RSI: 00002000000003c0 RDI: 0000000000000003 RBP: 00007f17486f8320 R08: 0000000000000000 R09: 0000000000000000 R10: 00002000000003c0 R11: 0000000000000246 R12: 00007f17486c5470 R13: 0000200000002880 R14: 0000200000002720 R15: 0000200000002700