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WARNING: kernel/rcu/tree_stall.h:1049 at rcu_check_gp_start_stall+0x2e4/0x470, CPU#0: syz.8.9383/29121
Modules linked in:
CPU: 0 UID: 0 PID: 29121 Comm: syz.8.9383 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rcu_check_gp_start_stall+0x2e4/0x470
Code: ff ff 48 c7 c7 60 55 49 9a be 04 00 00 00 e8 23 ec 85 00 4c 89 f7 b8 01 00 00 00 87 05 d5 e5 9d 18 85 c0 0f 85 17 ff ff ff 90 <0f> 0b 90 48 81 ff 80 28 96 8e 74 47 48 c7 c0 c0 23 31 90 48 c1 e8
RSP: 0018:ffffc90000007d98 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000246 RCX: ffffffff81ab6f7d
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8e962880
RBP: ffffc90000007f18 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff3492aac R12: 0000000000002904
R13: dffffc0000000000 R14: ffffffff8e962880 R15: dffffc0000000000
FS:  00007fda468c56c0(0000) GS:ffff88818dc84000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000bbdffc CR3: 000000011902a000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 rcu_core+0x3fe/0x1070
 handle_softirqs+0x22a/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:smp_call_function_many_cond+0xfcf/0x13d0
Code: 79 45 8b 2e 44 89 ee 83 e6 01 31 ff e8 7a 06 0c 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 25 02 0c 00 eb 37 f3 90 <43> 0f b6 04 2c 84 c0 75 10 41 f7 06 01 00 00 00 74 1e e8 0a 02 0c
RSP: 0018:ffffc900068b77e0 EFLAGS: 00000246
RAX: ffffffff81b9c306 RBX: ffff88812103c2c8 RCX: 0000000000080000
RDX: ffffc9002140f000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900068b7920 R08: ffffffff9030f0f7 R09: 1ffffffff2061e1e
R10: dffffc0000000000 R11: fffffbfff2061e1f R12: 1ffff110478c8199
R13: dffffc0000000000 R14: ffff88823c640cc8 R15: 0000000000000001
 on_each_cpu_cond_mask+0x3f/0x80
 smp_text_poke_batch_finish+0x5f5/0x1160
 arch_jump_label_transform_apply+0x1c/0x30
 static_key_slow_inc_cpuslocked+0x80/0xf0
 static_key_slow_inc+0x1a/0x30
 tcp_md5_do_add+0x1d4/0x390
 tcp_v6_parse_md5_keys+0x562/0x680
 do_tcp_setsockopt+0x12ec/0x2060
 do_sock_setsockopt+0x17c/0x1b0
 __x64_sys_setsockopt+0x13d/0x1b0
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fda4599ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fda468c5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fda45c15fa0 RCX: 00007fda4599ce59
RDX: 000000000000000e RSI: 0000000000000006 RDI: 0000000000000003
RBP: 00007fda45a32d6f R08: 00000000000000d8 R09: 0000000000000000
R10: 0000200000000400 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fda45c16038 R14: 00007fda45c15fa0 R15: 00007fffc457f318
 </TASK>
