rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=17b4/1/0x4000000000000000 softirq=28317/28318 fqs=4816
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1241273          0            0
rcu: 	cputime:    31290      21189           84   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=21997 q=8049 ncpus=2)
CPU: 1 UID: 0 PID: 9086 Comm: syz.0.862 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:kasan_save_track+0x41/0x80
Code: 00 89 f3 49 89 fe 49 89 e7 ba 00 02 00 00 4c 89 ff 31 f6 e8 61 76 57 09 4c 89 ff be 40 00 00 00 31 d2 e8 f2 45 89 ff 4c 89 ff <89> c6 89 da b9 01 00 00 00 e8 21 43 dc 02 65 48 8b 0c 25 08 d0 a0
RSP: 0018:ffffc900001e07e0 EFLAGS: 00000246
RAX: 0000000000000025 RBX: 0000000000000000 RCX: f17c5a555acfd500
RDX: 0000000000000000 RSI: ffffffff8dba9858 RDI: ffffc900001e07e0
RBP: ffffc900001e0a08 R08: 0000000000000000 R09: ffffffff81ceb566
R10: ffffc900001e06f8 R11: ffffffff81ac4d00 R12: ffffea00046a8080
R13: 0000000000000000 R14: ffff88811aa02a08 R15: ffffc900001e07e0
FS:  00007f5e551c56c0(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000034000 CR3: 0000000028efa000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kmem_cache_free+0x18f/0x400
 tcp_write_queue_purge+0x143/0x300
 tcp_done_with_error+0x43/0xd0
 tcp_write_timer_handler+0x6ec/0x9b0
 tcp_write_timer+0x162/0x2e0
 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_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+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 ab 8a 14 f6 e8 16 e7 4b f6 fb bf 01 00 00 00 <e8> 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90002b3e940 EFLAGS: 00000286
RAX: f17c5a555acfd500 RBX: 0000000000000000 RCX: f17c5a555acfd500
RDX: 0000000000000006 RSI: ffffffff8d9ba186 RDI: 0000000000000001
RBP: ffffc90002b3e9f0 R08: ffffffff8fa3a837 R09: 1ffffffff1f47506
R10: dffffc0000000000 R11: fffffbfff1f47507 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000567d28
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__sanitizer_cov_trace_pc+0x4a/0x70
Code: 81 fa 00 01 00 00 75 35 83 b9 3c 16 00 00 00 74 2c 8b 91 18 16 00 00 83 fa 02 75 21 48 8b 91 20 16 00 00 48 8b 32 48 8d 7e 01 <8b> 89 1c 16 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 e9 be 7a
RSP: 0018:ffffc90002b3eab0 EFLAGS: 00000246
RAX: ffffffff84fe886f RBX: dffffc0000000000 RCX: ffff8880222ad640
RDX: ffffc9000380a000 RSI: 00000000000050a6 RDI: 00000000000050a7
RBP: 000000000000002d R08: 0065756575716f6e R09: 0000000000000004
R10: ffff8881126e6254 R11: ffffed10224dcc4a R12: 0000000000000c6c
R13: 0000000000000004 R14: 0000000000000000 R15: ffff88811aa13b00
 nla_put+0xbf/0x150
 rtnl_fill_link_af+0x179/0x440
 rtnl_fill_ifinfo+0x1b77/0x1e70
 rtnl_dump_ifinfo+0xa7b/0x1060
 rtnl_dumpit+0xa2/0x200
 netlink_dump+0x6e4/0xe90
 __netlink_dump_start+0x5cb/0x7e0
 rtnetlink_rcv_msg+0x9eb/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5e5438eba9
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:00007f5e551c5038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5e545d5fa0 RCX: 00007f5e5438eba9
RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000000000000008
RBP: 00007f5e54411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5e545d6038 R14: 00007f5e545d5fa0 R15: 00007fff447240c8
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 105120762663 wd_nsec: 105120763515
