rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=aa04/1/0x4000000000000000 softirq=137343/137343 fqs=5171
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1040245         62            0
rcu: 	cputime:    32934      19555           46   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=117705 q=2363 ncpus=2)
CPU: 0 UID: 0 PID: 29349 Comm: syz.6.5752 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
RIP: 0010:unwind_next_frame+0x539/0x23c0
Code: 0f b6 04 08 84 c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 e0 48 0f 46 e9 49 8d 47 fc 48 0f 47 d8 4d 0f 46 ef 48 39 dd 76 a2 <e9> 76 fd ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 7c cc 4c 89 ff 48
RSP: 0018:ffffc90000007578 EFLAGS: 00000212
RAX: ffffffff902d00f8 RBX: ffffffff902d00fc RCX: ffffffff902d0100
RDX: ffffffff902d00d0 RSI: ffffffff90aaa7e2 RDI: ffffffff8c27b3a0
RBP: ffffffff902d0100 R08: 000000000000000c R09: ffffffff8e75e3e0
R10: ffffc90000007698 R11: ffffffff81b0bfa0 R12: ffffffff81b1d5e6
R13: ffffffff902d00fc R14: ffffc90000007648 R15: ffffffff902d00fc
FS:  00007eff5dcb36c0(0000) GS:ffff88818de63000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000019b04a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kmem_cache_free+0x187/0x630
 tcp_write_queue_purge+0x143/0x360
 tcp_done_with_error+0x43/0xd0
 tcp_retransmit_timer+0x1f0e/0x35f0
 tcp_write_timer+0x15c/0x2d0
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0x48/0xa0
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 63 c5 e4 f5 e8 1e 60 1e f6 fb bf 01 00 00 00 <e8> c3 a6 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 f4 61 1e f6 bf 01
RSP: 0018:ffffc90007f8fc00 EFLAGS: 00000202
RAX: 00000000000019c1 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8def4b7d RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff90118bb7 R09: 1ffffffff2023176
R10: dffffc0000000000 R11: fffffbfff2023177 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_release+0x2d7/0x3d0
Code: 5b 7a 11 00 00 00 00 eb b5 e8 f5 37 0c 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 75 15 7a 11 48 3b 44 24 28 75 44 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 da 1d 0f 0a cc 48 8d 3d 72 27 73
RSP: 0018:ffffc90007f8fd28 EFLAGS: 00000286
RAX: f3dad9e4e444a000 RBX: 0000000000000202 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8e165502 RDI: ffffffff8c27b400
RBP: ffff888021898b58 R08: ffffffff824bfcdc R09: ffffffff8e75e3e0
R10: dffffc0000000000 R11: ffffed10043a4561 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8e75e3e0 R15: ffff888021898000
 mntput_no_expire+0x190/0x1c0
 __fput+0x6bd/0xa70
 fput_close_sync+0x11f/0x240
 __x64_sys_close+0x7e/0x110
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7eff5cd9c799
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:00007eff5dcb3028 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007eff5d015fa0 RCX: 00007eff5cd9c799
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000c
RBP: 00007eff5ce32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007eff5d016038 R14: 00007eff5d015fa0 R15: 00007ffcff56e8f8
 </TASK>
