rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=169c/1/0x4000000000000000 softirq=33517/33518 fqs=5234
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   889080          0            0
rcu: 	cputime:    26647      25842          109   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=22141 q=2413 ncpus=2)
CPU: 0 UID: 0 PID: 10092 Comm: syz.3.1751 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-dirty #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 d2 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:ffffc90000007200 EFLAGS: 00000206
RAX: 3938aefc8f61e200 RBX: 1ffff92000000e48 RCX: 3938aefc8f61e200
RDX: 0000000000000002 RSI: ffffffff8d998874 RDI: ffffffff8be29f40
RBP: ffffc900000072f8 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
FS:  00007f3dca9b36c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000022bb0000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 kvfree_call_rcu+0xbb/0x410
 inet_put_port+0x65a/0x760
 tcp_set_state+0x4cd/0x670
 tcp_done+0xfc/0x310
 tcp_done_with_error+0x4b/0xd0
 tcp_retransmit_timer+0x1d16/0x3370
 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_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 1b 2d 21 f6 e8 56 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:ffffc90002a1f860 EFLAGS: 00000286
RAX: 3938aefc8f61e200 RBX: 0000000000000000 RCX: 3938aefc8f61e200
RDX: 0000000000000000 RSI: ffffffff8d998874 RDI: 0000000000000001
RBP: ffffc90002a1f910 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000543f0c
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:do_user_addr_fault+0x1ae/0x1390
Code: 1b 48 89 de 48 81 e6 00 02 00 00 31 ff e8 1a 7d 4c 00 48 81 e3 00 02 00 00 0f 84 79 0e 00 00 e8 48 04 54 00 fb 4c 89 7c 24 38 <0f> 1f 44 00 00 e8 18 78 4c 00 44 89 f6 83 e6 40 31 ff 48 89 74 24
RSP: 0018:ffffc90002a1f9d8 EFLAGS: 00000286
RAX: 3938aefc8f61e200 RBX: 0000000000000200 RCX: 3938aefc8f61e200
RDX: 0000000000000000 RSI: ffffffff8d998874 RDI: ffffffff8be29f40
RBP: dffffc0000000000 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffc90002a1fac8
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888021771cc0
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:rep_movs_alternative+0xf/0x90
Code: c4 10 e9 94 01 04 00 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 83 f9 40 73 44 83 f9 08 73 25 85 c9 74 0f <8a> 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 cc cc cc cc 66 2e
RSP: 0018:ffffc90002a1fb78 EFLAGS: 00010206
RAX: 00007ffffffff001 RBX: 0000000000000038 RCX: 0000000000000038
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffc90002a1fc00
RBP: ffffc90002a1fd90 R08: ffffc90002a1fc37 R09: 1ffff92000543f86
R10: dffffc0000000000 R11: fffff52000543f87 R12: 0000000000002040
R13: dffffc0000000000 R14: ffffc90002a1fc00 R15: 0000000000000000
 _copy_from_user+0x7a/0xb0
 ___sys_recvmsg+0x12e/0x510
 __x64_sys_recvmsg+0x198/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3dc9b8e9a9
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:00007f3dca9b3038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f3dc9db5fa0 RCX: 00007f3dc9b8e9a9
RDX: 0000000000002040 RSI: 0000000000000000 RDI: 000000000000000d
RBP: 00007f3dc9c10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3dc9db5fa0 R15: 00007ffffe2b2238
 </TASK>
sched: DL replenish lagged too much
