rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (1 GPs behind) idle=2ed4/1/0x4000000000000000 softirq=15957/15959 fqs=5221 rcu: hardirqs softirqs csw/system rcu: number: 5259 0 0 rcu: cputime: 240 0 51824 ==> 52490(ms) rcu: (t=10500 jiffies g=17493 q=424 ncpus=2) CPU: 1 UID: 0 PID: 10693 Comm: syz-executor424 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:lock_is_held_type+0x106/0x150 kernel/locking/lockdep.c:5945 Code: 19 00 00 b8 ff ff ff ff 65 0f c1 05 74 1d 91 07 83 f8 01 75 25 9c 58 a9 00 02 00 00 75 39 41 f7 c4 00 02 00 00 74 01 fb 89 d8 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 90 0f 0b 90 48 c7 RSP: 0018:ffffc900044f64a8 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000201 RDX: 0000000000000000 RSI: ffffffff8e218654 RDI: ffffffff8c28abe0 RBP: 00000000ffffffff R08: ffffffff8b4728b5 R09: ffffffff8e95cd60 R10: dffffc0000000000 R11: fffffbfff206147f R12: 0000000000000246 R13: ffff888031301ec0 R14: ffff888032055240 R15: 0000000000000003 FS: 00007f25403a76c0(0000) GS:ffff888125390000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2540385ff8 CR3: 00000000779c4000 CR4: 00000000003526f0 Call Trace: __rhashtable_lookup include/linux/rhashtable.h:626 [inline] rhashtable_lookup include/linux/rhashtable.h:671 [inline] tipc_sk_lookup+0x196/0x920 net/tipc/socket.c:3000 tipc_sk_rcv+0x3f8/0x2b40 net/tipc/socket.c:2492 tipc_node_xmit+0x202/0xf10 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x2d8/0x400 net/tipc/node.c:1781 tipc_sk_rcv+0x2535/0x2b40 net/tipc/socket.c:2501 tipc_node_xmit+0x202/0xf10 net/tipc/node.c:1701 tipc_sk_push_backlog net/tipc/socket.c:1312 [inline] tipc_sk_filter_connect net/tipc/socket.c:2255 [inline] tipc_sk_filter_rcv+0x1d3b/0x3370 net/tipc/socket.c:2364 tipc_sk_enqueue net/tipc/socket.c:2445 [inline] tipc_sk_rcv+0x87d/0x2b40 net/tipc/socket.c:2497 tipc_node_xmit+0x202/0xf10 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x2d8/0x400 net/tipc/node.c:1781 tipc_sk_backlog_rcv+0x1bb/0x270 net/tipc/socket.c:2412 sk_backlog_rcv include/net/sock.h:1190 [inline] __release_sock+0x297/0x3a0 net/core/sock.c:3216 release_sock+0x190/0x260 net/core/sock.c:3815 sockopt_release_sock net/core/sock.c:1163 [inline] sk_setsockopt+0x27d6/0x2d60 net/core/sock.c:1676 do_sock_setsockopt+0x11b/0x1b0 net/socket.c:2377 __sys_setsockopt net/socket.c:2406 [inline] __do_sys_setsockopt net/socket.c:2412 [inline] __se_sys_setsockopt net/socket.c:2409 [inline] __x64_sys_setsockopt+0x13d/0x1b0 net/socket.c:2409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f25403cf029 Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 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 d0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f25403a71d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f25403a7cdc RCX: 00007f25403cf029 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007f254047fb48 R08: 0000000000000004 R09: 31203a6b63617473 R10: 00002000000001c0 R11: 0000000000000246 R12: 0000200000000240 R13: 00007f254047fb40 R14: 00007f254047fb4c R15: 0000200000000004