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1
WARNING: kernel/rcu/tree_stall.h:1049 at rcu_check_gp_start_stall+0x2e4/0x470, CPU#1: kworker/u11:0/53
Modules linked in:
CPU: 1 UID: 0 PID: 53 Comm: kworker/u11:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: krxrpcd rxrpc_peer_keepalive_worker
RIP: 0010:rcu_check_gp_start_stall+0x2e4/0x470
Code: ff ff 48 c7 c7 20 65 48 9a be 04 00 00 00 e8 e3 91 85 00 4c 89 f7 b8 01 00 00 00 87 05 35 0d 9d 18 85 c0 0f 85 17 ff ff ff 90 <0f> 0b 90 48 81 ff 00 29 96 8e 74 47 48 c7 c0 c0 cb 30 90 48 c1 e8
RSP: 0018:ffffc90000a08db8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000246 RCX: ffffffff81ab57dd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8e962900
RBP: ffffc90000a08f40 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff3490ca4 R12: 0000000000002904
R13: dffffc0000000000 R14: ffffffff8e962900 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8882a9293000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000002 CR3: 00000001bc2ec000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000003 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_core+0x3fe/0x1070
 handle_softirqs+0x22a/0x840
 do_softirq+0x76/0xd0
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x130
 rxrpc_peer_keepalive_worker+0x462/0xe30
 process_scheduled_works+0xb5d/0x1860
 worker_thread+0xa53/0xfc0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
