rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10374 ticks this GP) idle=cab4/1/0x4000000000000000 softirq=44537/44537 fqs=5249
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   932765          0            0
rcu: 	cputime:    27743      24746           96   ==> 52500(ms)
rcu: 	(t=10501 jiffies g=33617 q=2073 ncpus=2)
CPU: 0 UID: 0 PID: 11001 Comm: syz.4.1282 Not tainted 6.16.0-syzkaller-06600-g1dbf1d590d10-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 b2 e8 f2 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:ffffc90000007320 EFLAGS: 00000206
RAX: 6602d5b16664b100 RBX: 1ffff92000000e6c RCX: 6602d5b16664b100
RDX: 0000000000000002 RSI: ffffffff8d9792dd RDI: ffffffff8be30a00
RBP: ffffc90000007418 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: ffffffff8e141800
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
FS:  00007f1f2676a6c0(0000) GS:ffff8880b8680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000f000 CR3: 000000002ffd4000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
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_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x62/0x70
 kmem_cache_free+0x18f/0x400
 inet_put_port+0x546/0x760
 tcp_set_state+0x4cd/0x670
 tcp_done+0xfc/0x310
 tcp_done_with_error+0x4b/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_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 eb 1f 1f f6 e8 c6 48 56 f6 fb bf 01 00 00 00 <e8> eb aa ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90007d77520 EFLAGS: 00000282
RAX: 6602d5b16664b100 RBX: 0000000000000000 RCX: 6602d5b16664b100
RDX: 0000000000000000 RSI: ffffffff8d9792dd RDI: 0000000000000001
RBP: ffffc90007d775c0 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000faeea4
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__rcu_read_unlock+0x7f/0xe0
Code: 00 75 27 43 0f b6 04 3c 84 c0 75 41 8b 03 3d 00 00 00 40 73 0f 5b 41 5c 41 5d 41 5e 41 5f e9 98 96 cb 09 cc 90 0f 0b 90 eb eb <e8> 6c 00 00 00 eb d2 89 d9 80 e1 07 80 c1 03 38 c1 7c a5 49 89 fe
RSP: 0018:ffffc90007d77688 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff888106ac3dc4 RCX: 6602d5b16664b100
RDX: 0000000000000000 RSI: ffffffff8db66087 RDI: ffff888106ac3980
RBP: dffffc0000000000 R08: ffffc90007d778b0 R09: 0000000000000000
R10: ffffc90007d777d8 R11: fffff52000faeefd R12: 1ffff11020d587b8
R13: ffffc90007d70000 R14: ffff888106ac3dc8 R15: dffffc0000000000
 unwind_next_frame+0x19ae/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x230/0x3d0
 ref_tracker_alloc+0x133/0x460
 sk_alloc+0x1b1/0x370
 unix_create1+0xb0/0x7c0
 unix_create+0x16b/0x210
 __sock_create+0x4b3/0x9f0
 __sys_socketpair+0x1c5/0x560
 __x64_sys_socketpair+0x9b/0xb0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1f2598ebe9
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:00007f1f2676a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f1f25bb5fa0 RCX: 00007f1f2598ebe9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 00007f1f25a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1f25bb6038 R14: 00007f1f25bb5fa0 R15: 00007ffc0702e7e8
 </TASK>
sched: DL replenish lagged too much
