rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=8fec/1/0x4000000000000000 softirq=14928/14928 fqs=4804
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1038197          0            0
rcu: 	cputime:    32370      20119           89   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=8049 q=2601 ncpus=2)
CPU: 0 UID: 0 PID: 6130 Comm: syz.2.101 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_is_watching+0x3a/0xb0
Code: e8 eb 75 c7 09 89 c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 70 ec bb 8d 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 <74> 08 4c 89 f7 e8 1c 20 7c 00 48 c7 c3 98 3f a1 92 49 03 1e 48 89
RSP: 0018:ffffc90000006d00 EFLAGS: 00000246
RAX: 1ffffffff1b77d8e RBX: 0000000000000000 RCX: 186a36313a906200
RDX: ffff88801afe1cc0 RSI: ffffffff8be29f20 RDI: ffffffff8be29ee0
RBP: ffffc90000006e30 R08: ffffc90000006c97 R09: 0000000000000000
R10: ffffc90000006c80 R11: fffff52000000d93 R12: ffffc90000006d60
R13: 00000000ffffffe4 R14: ffffffff8dbbec70 R15: dffffc0000000000
FS:  00007fd70d1f86c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000029c0 CR3: 000000002765c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_event_output_forward+0x30b/0x430
 __perf_event_overflow+0x7cf/0xe10
 perf_swevent_event+0x4f8/0x5e0
 perf_tp_event+0x4f6/0x1380
 perf_trace_run_bpf_submit+0xee/0x170
 perf_trace_lock_acquire+0x335/0x410
 lock_acquire+0x311/0x360
 unwind_next_frame+0xc2/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 new_skb+0x2f/0x2b0
 aoecmd_cfg+0x28b/0x7c0
 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_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:raw_spin_rq_unlock_irq+0x13/0x90
Code: cc e8 31 73 db 09 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 53 66 90 e8 84 00 de 09 e8 bf 9f 34 00 fb 5b <41> 5e 41 5f c3 cc cc cc cc cc f3 0f 1e fa 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc900046e76a8 EFLAGS: 00000286
RAX: 186a36313a906200 RBX: ffff88801afe2440 RCX: 186a36313a906200
RDX: 0000000000000006 RSI: ffffffff8d998874 RDI: ffffffff8be29f40
RBP: ffffc900046e78d0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffff88801afe1cc0
R13: dffffc0000000000 R14: ffff88801afe1cc0 R15: ffff88804b039fc0
 __schedule+0x1948/0x4d00
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 _raw_spin_unlock+0x3f/0x50
 fasync_insert_entry+0x1df/0x270
 fasync_helper+0x52/0xb0
 perf_fasync+0xc3/0x110
 do_vfs_ioctl+0x14cb/0x1990
 __se_sys_ioctl+0x82/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd70c38e9a9
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:00007fd70d1f8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd70c5b5fa0 RCX: 00007fd70c38e9a9
RDX: 00002000000006c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007fd70c410d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd70c5b5fa0 R15: 00007ffdef9ce548
 </TASK>
sched: DL replenish lagged too much
