rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (1 GPs behind) idle=4104/1/0x4000000000000000 softirq=14193/14194 fqs=5250 (t=10502 jiffies g=15369 q=158 ncpus=2) CPU: 1 PID: 16954 Comm: syz-executor399 Not tainted 6.1.84-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:236 [inline] RIP: 0010:rcu_lockdep_current_cpu_online+0xc5/0x120 kernel/rcu/tree.c:776 Code: 3c 30 00 74 08 48 89 df e8 88 bb 6e 00 48 8b 1b 48 83 c3 70 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 6b bb 6e 00 <4c> 23 3b 75 1a 48 c7 c7 00 01 13 8d be 04 00 00 00 e8 e5 bc 6e 00 RSP: 0018:ffffc90004f7e390 EFLAGS: 00000246 RAX: 1ffffffff1a25f0e RBX: ffffffff8d12f870 RCX: 0000000000000201 RDX: ffff88801765bb80 RSI: ffffffff8b3d2d00 RDI: ffff8880b993b8e0 RBP: ffffc90004f7e4b0 R08: ffffffff8a2e5aac R09: fffffbfff2093045 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807a76b4e0 R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000002 FS: 00007f432361c6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f432361cd58 CR3: 0000000071956000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock_held_common kernel/rcu/update.c:112 [inline] rcu_read_lock_held+0x1a/0x40 kernel/rcu/update.c:309 rht_ptr_rcu include/linux/rhashtable.h:369 [inline] __rhashtable_lookup include/linux/rhashtable.h:599 [inline] rhashtable_lookup include/linux/rhashtable.h:638 [inline] tipc_sk_lookup+0x345/0x940 net/tipc/socket.c:3001 tipc_sk_rcv+0x440/0x1da0 net/tipc/socket.c:2492 tipc_node_xmit+0x1da/0xf50 net/tipc/node.c:1703 tipc_node_xmit_skb net/tipc/node.c:1768 [inline] tipc_node_distr_xmit+0x309/0x440 net/tipc/node.c:1783 tipc_sk_rcv+0x166b/0x1da0 net/tipc/socket.c:2501 tipc_node_xmit+0x1da/0xf50 net/tipc/node.c:1703 tipc_sk_push_backlog+0x507/0x920 net/tipc/socket.c:1316 tipc_sk_conn_proto_rcv net/tipc/socket.c:1370 [inline] tipc_sk_proto_rcv+0xa72/0x19a0 net/tipc/socket.c:2158 tipc_sk_filter_rcv+0x31dd/0x34b0 net/tipc/socket.c:2352 tipc_sk_enqueue net/tipc/socket.c:2445 [inline] tipc_sk_rcv+0x8bf/0x1da0 net/tipc/socket.c:2497 tipc_node_xmit+0x1da/0xf50 net/tipc/node.c:1703 tipc_node_xmit_skb net/tipc/node.c:1768 [inline] tipc_node_distr_xmit+0x309/0x440 net/tipc/node.c:1783 tipc_sk_backlog_rcv+0x199/0x220 net/tipc/socket.c:2412 sk_backlog_rcv include/net/sock.h:1117 [inline] __release_sock+0x198/0x4b0 net/core/sock.c:2935 release_sock+0x5d/0x1c0 net/core/sock.c:3499 sk_setsockopt+0x2299/0x3400 __sys_setsockopt+0x5dd/0xa00 net/socket.c:2279 __do_sys_setsockopt net/socket.c:2294 [inline] __se_sys_setsockopt net/socket.c:2291 [inline] __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2291 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f432367c3a9 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:00007f432361c228 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f432361c6c0 RCX: 00007f432367c3a9 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007f4323706338 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020000540 R11: 0000000000000246 R12: 00007f4323706330 R13: 00007f432370633c R14: 00007ffcb7f925b0 R15: 00007ffcb7f92698