rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (6123 ticks this GP) idle=bcc4/1/0x4000000000000000 softirq=32109/35852 fqs=4965
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1134228       4351            0
rcu: 	cputime:    25457      26981          128   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=25917 q=2900 ncpus=2)
CPU: 1 UID: 0 PID: 9592 Comm: syz.7.1105 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rcu_read_unlock_special+0x87/0x4c0
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 62 2c f8 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900001e00a0 EFLAGS: 00000206
RAX: 5c93a5aa7ff0a300 RBX: 1ffff9200003c01c RCX: 5c93a5aa7ff0a300
RDX: 0000000000000002 RSI: ffffffff8d998836 RDI: ffffffff8be29f40
RBP: ffffc900001e01a0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
FS:  00007f118aa026c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb5a3150d58 CR3: 00000000216bc000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 is_module_text_address+0x190/0x1e0
 kernel_text_address+0x94/0xe0
 __kernel_text_address+0xd/0x40
 unwind_get_return_address+0x4d/0x90
 arch_stack_walk+0xfc/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 __netdev_alloc_skb+0x108/0x970
 br_send_bpdu+0xa2/0x940
 br_send_config_bpdu+0x45d/0x720
 br_transmit_config+0x3ae/0x5c0
 br_config_bpdu_generation+0x123/0x1d0
 br_hello_timer_expired+0x9b/0x1d0
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_irq_work+0xa3/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 8b 2d 21 f6 e8 c6 00 58 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc900035378c0 EFLAGS: 00000282
RAX: 5c93a5aa7ff0a300 RBX: 0000000000000000 RCX: 5c93a5aa7ff0a300
RDX: 0000000000000006 RSI: ffffffff8d998836 RDI: 0000000000000001
RBP: ffffc90003537960 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920006a6f18
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__local_bh_enable_ip+0x135/0x1c0
Code: 8b e8 8f f2 e8 09 65 66 8b 05 6f 5f 1a 11 66 85 c0 75 5a bf 01 00 00 00 e8 a8 32 0b 00 e8 33 04 42 00 fb 65 8b 05 4b 5f 1a 11 <85> c0 75 05 e8 82 f5 ad ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00
RSP: 0018:ffffc90003537a20 EFLAGS: 00000282
RAX: 0000000000000000 RBX: 0000000000000201 RCX: 5c93a5aa7ff0a300
RDX: 0000000000000006 RSI: ffffffff8d998836 RDI: ffffffff8be29f40
RBP: ffffc90003537ab0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8b10ed5d
R13: 1ffff110215332ad R14: dffffc0000000000 R15: 1ffff920006a6f44
 conn_put+0xbd/0x320
 tipc_group_delete+0x40c/0x480
 tipc_sk_join+0x3c6/0x6b0
 tipc_setsockopt+0x735/0x970
 do_sock_setsockopt+0x17c/0x1b0
 __x64_sys_setsockopt+0x13f/0x1b0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1189b8e9a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f118aa02038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f1189db5fa0 RCX: 00007f1189b8e9a9
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000009
RBP: 00007f1189c10d69 R08: 00000000000004bd R09: 0000000000000000
R10: 0000200000000180 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1189db5fa0 R15: 00007ffd16113878
 </TASK>
