rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=9fc4/1/0x4000000000000000 softirq=14571/14572 fqs=4735
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1158119          0            0
rcu: 	cputime:    25120      27368           80   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=6665 q=2132 ncpus=2)
CPU: 1 UID: 0 PID: 6179 Comm: syz.1.132 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a #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 92 37 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:ffffc900001e03a0 EFLAGS: 00000206
RAX: 635ad32547b8eb00 RBX: 1ffff9200003c07c RCX: 635ad32547b8eb00
RDX: 0000000000000000 RSI: ffffffff8d9986f9 RDI: ffffffff8be29f80
RBP: ffffc900001e0498 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
FS:  00007f89f296e6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f89f294cfc8 CR3: 0000000028354000 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
 kfree+0x18e/0x440
 skb_release_data+0x62d/0x7c0
 sk_skb_reason_drop+0x127/0x170
 skb_queue_purge_reason+0x2c8/0x360
 netlink_sock_destruct+0x2d/0x1a0
 __sk_destruct+0x89/0x660
 rcu_core+0xca8/0x1710
 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:trace_kmem_cache_alloc+0x0/0xc0
Code: 31 c0 e9 06 fe ff ff 48 89 df 48 c7 c6 20 9e 9e 8d e8 34 15 ef ff 90 0f 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 90 65 8b 05 8b be 87 10 83 f8 08 73 24 89 c0 48 0f a3 05 38 97
RSP: 0018:ffffc900067cfc68 EFLAGS: 00000246
RAX: ffff88802772e680 RBX: ffff88802772e680 RCX: 0000000000000dc0
RDX: ffff88801b68f140 RSI: ffff88802772e680 RDI: ffffffff84744b54
RBP: 0000000000000dc0 R08: 00000000ffffffff R09: 0000000000000000
R10: ffff88802772e680 R11: ffffffffa0000854 R12: 0000000000000060
R13: ffff88802772e680 R14: ffff88801b68f140 R15: 0000000000041d00
 kmem_cache_alloc_noprof+0x21a/0x3c0
 security_file_alloc+0x34/0x330
 init_file+0x93/0x2f0
 alloc_empty_file+0x6e/0x1d0
 alloc_file_pseudo+0x13d/0x210
 sock_alloc_file+0xb8/0x2e0
 __sys_socket+0x13d/0x1b0
 __x64_sys_socket+0x7a/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f89f1b8e9a9
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:00007f89f296e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f89f1db5fa0 RCX: 00007f89f1b8e9a9
RDX: 000000000000003a RSI: 0000000000000002 RDI: 000000000000000a
RBP: 00007f89f1c10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f89f1db5fa0 R15: 00007ffdbbf795b8
 </TASK>
sched: DL replenish lagged too much
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 105298048327 wd_nsec: 105298043521
