clocksource: Long readout interval, skipping watchdog check: cs_nsec: 46189702875 wd_nsec: 46189703955
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=b094/1/0x4000000000000000 softirq=25949/25950 fqs=4766
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1163640          0            0
rcu: 	cputime:    28878      23611           79   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=15777 q=1440 ncpus=2)
CPU: 0 UID: 0 PID: 8732 Comm: syz.0.812 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:get_random_u32+0x4f0/0x940
Code: 7e 6d fc 48 8b 5c 24 28 4d 85 ff 75 07 e8 e8 7e 6d fc eb 06 e8 e1 7e 6d fc fb 8b 84 24 00 01 00 00 48 c7 44 24 40 0e 36 e0 45 <42> c7 04 23 00 00 00 00 4a c7 44 23 0c 00 00 00 00 42 c7 44 23 15
RSP: 0018:ffffc90000007860 EFLAGS: 00000246
RAX: 000000009369f7dc RBX: 1ffff92000000f14 RCX: ffff88802a7a1cc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000079d0 R08: ffffffff8fa38437 R09: 1ffffffff1f47086
R10: dffffc0000000000 R11: fffffbfff1f47087 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff88804b036230 R15: 0000000000000200
FS:  00007effc0f4d6c0(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007effc0f4cfc8 CR3: 0000000025510000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 tcp_rtx_synack+0xec/0x610
 reqsk_timer_handler+0x720/0xcd0
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0x67/0x180
 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 0b 39 15 f6 e8 16 92 4c 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:ffffc90007c6f6a0 EFLAGS: 00000286
RAX: 0b9a33f411cedc00 RBX: 0000000000000000 RCX: 0b9a33f411cedc00
RDX: 0000000000000000 RSI: ffffffff8be33660 RDI: 0000000000000001
RBP: ffffc90007c6f740 R08: ffffffff8fa38437 R09: 1ffffffff1f47086
R10: dffffc0000000000 R11: fffffbfff1f47087 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000f8ded4
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:deref_stack_reg+0x1ae/0x230
Code: d8 0f 97 c1 4c 39 f0 0f 96 c0 20 c8 3c 01 75 30 4c 89 c7 49 89 f7 e8 11 08 00 00 49 89 c6 48 8b 5c 24 18 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 b3 2c b0 00 4c 89 33 b0 01 eb 02
RSP: 0018:ffffc90007c6f800 EFLAGS: 00000a06
RAX: 1ffff92000f8df2d RBX: ffffc90007c6f968 RCX: 0000000000000001
RDX: ffffc90007c6f968 RSI: dffffc0000000000 RDI: ffffc90007c6ff48
RBP: 1ffff92000f8df25 R08: ffffc90007c6ff48 R09: 0000000000000000
R10: ffffc90007c6f978 R11: fffff52000f8df31 R12: 1ffff92000f8df26
R13: 1ffff92000f8df27 R14: 0000000000000000 R15: dffffc0000000000
 unwind_next_frame+0x17c4/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 sk_prot_alloc+0x57/0x220
 sk_alloc+0x3a/0x370
 kcm_create+0x100/0x580
 __sock_create+0x4b3/0x9f0
 __sys_socket+0xd7/0x1b0
 __x64_sys_socket+0x7a/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7effc018ebe9
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:00007effc0f4d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007effc03b6180 RCX: 00007effc018ebe9
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000029
RBP: 00007effc0211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007effc03b6218 R14: 00007effc03b6180 R15: 00007ffc5124a4a8
 </TASK>
sched: DL replenish lagged too much
