rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=8fe4/1/0x4000000000000000 softirq=15225/15226 fqs=4521
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1045296          0            0
rcu: 	cputime:    23894      28584           75   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=7289 q=2700 ncpus=2)
CPU: 1 UID: 0 PID: 6369 Comm: syz.1.166 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:unwind_next_frame+0x19ae/0x2390
Code: c7 e0 44 88 8b be 66 03 00 00 48 c7 c2 80 45 88 8b e8 76 a2 2b 00 48 c7 c7 e0 f0 13 8e 4c 89 fe e8 57 88 2b 00 e8 72 1e 35 00 <89> d8 48 81 c4 98 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 9a af
RSP: 0018:ffffc900001e06d8 EFLAGS: 00000287
RAX: 0000000000000000 RBX: ffffc900001e0701 RCX: 44bf9c312802da00
RDX: 0000000000000003 RSI: ffffffff8d99883e RDI: ffffffff8be29f40
RBP: dffffc0000000000 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffc900001e0b38
R13: ffffc900001d9000 R14: ffffc900001e07a8 R15: ffffffff8172aae5
FS:  00007fdfea7d06c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000110702000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 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
 slab_free_after_rcu_debug+0x60/0x2a0
 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:kfree+0x9a/0x440
Code: 89 df e8 39 18 5c ff 48 c1 e8 06 48 83 e0 c0 49 8b 4c 07 08 f6 c1 01 0f 85 72 01 00 00 49 01 c7 0f 1f 44 00 00 41 0f b6 47 33 <c1> e0 18 3d 00 00 00 f5 0f 85 62 01 00 00 4d 8b 67 08 48 89 5c 24
RSP: 0018:ffffc900061f6ee8 EFLAGS: 00000286
RAX: 00000000000000f5 RBX: ffff888023bdf800 RCX: ffffea00008ef700
RDX: ffffc9002184d000 RSI: 00000000000169c8 RDI: 00000000000169c9
RBP: 0000000000000000 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000a06
R13: 0000000000240001 R14: ffffffff8218f9b9 R15: ffffea00008ef700
 __free_slab+0xb9/0x1c0
 __slab_free+0x326/0x400
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_node_track_caller_noprof+0x216/0x4e0
 krealloc_noprof+0x124/0x340
 copy_array+0x63/0xf0
 copy_verifier_state+0xaf/0xf10
 do_check+0x4017/0xe520
 do_check_common+0x1918/0x2470
 bpf_check+0x1746a/0x1d2e0
 bpf_prog_load+0x1318/0x1930
 __sys_bpf+0x528/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdfe998e9a9
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:00007fdfea7d0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fdfe9bb5fa0 RCX: 00007fdfe998e9a9
RDX: 0000000000000048 RSI: 00002000000054c0 RDI: 0000000000000005
RBP: 00007fdfe9a10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdfe9bb5fa0 R15: 00007ffff68ae658
 </TASK>
sched: DL replenish lagged too much
