rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=b8f4/1/0x4000000000000000 softirq=20348/20350 fqs=4797
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1061363          0            0
rcu: 	cputime:    25873      26596           86   ==> 52470(ms)
rcu: 	(t=10500 jiffies g=14133 q=3707 ncpus=2)
CPU: 0 UID: 0 PID: 7218 Comm: syz.0.367 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_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 62 2c 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:ffffc900000075e0 EFLAGS: 00000206
RAX: 4217a37533824800 RBX: 1ffff92000000ec4 RCX: 4217a37533824800
RDX: 0000000000000003 RSI: ffffffff8d99883e RDI: ffffffff8be29f40
RBP: ffffc900000076e0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
FS:  00007f9a8c5ed6c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000004 CR3: 0000000113078000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 is_module_text_address+0x190/0x1e0
 kernel_text_address+0x94/0xe0
 __kernel_text_address+0xd/0x40
 unwind_get_return_address+0x4d/0x90
 arch_stack_walk+0xfc/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: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 8b 2d 21 f6 e8 c6 00 58 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90006567960 EFLAGS: 00000286
RAX: 4217a37533824800 RBX: 0000000000000000 RCX: 4217a37533824800
RDX: 0000000000000007 RSI: ffffffff8d99883e RDI: 0000000000000001
RBP: ffffc90006567a10 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000cacf2c
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_mm_and_find_vma+0xd3/0x300
Code: e9 92 61 68 09 cc e8 dc 26 b7 ff eb 3c 49 83 c4 20 4c 89 e0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 e7 e8 d1 47 1a 00 4d 8b 24 24 <4c> 89 e6 48 81 e6 00 01 00 00 31 ff e8 8c 2b b7 ff 49 81 e4 00 01
RSP: 0018:ffffc90006567ad0 EFLAGS: 00000246
RAX: 1ffff110213f6bc4 RBX: ffff88810b409400 RCX: ffff88801eb91cc0
RDX: 0000000000000002 RSI: 0000000000000004 RDI: 000000110c230000
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff34039ac R12: 00000000080000f9
R13: 000000110c230000 R14: 0000000000000004 R15: ffffc90006567bf8
 do_user_addr_fault+0x331/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:__get_user_4+0x14/0x20
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 ba 00 f0 ff ff ff 7f 00 00 48 39 d0 48 0f 47 c2 0f 1f 00 <8b> 10 31 c0 0f 1f 00 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90006567ca0 EFLAGS: 00010283
RAX: 0000000000000004 RBX: ffffc90006567da0 RCX: 4217a37533824800
RDX: 00007ffffffff000 RSI: ffffffff8db8655b RDI: ffffffff8be29f40
RBP: ffffc90006567ee0 R08: 0000000000000000 R09: ffffffff820bc340
R10: ffffc90006567da0 R11: fffff52000cacfc5 R12: ffffc90006567da0
R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000
 perf_copy_attr+0x45/0x880
 __se_sys_perf_event_open+0xdd/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9a8b78e9a9
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:00007f9a8c5ed038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f9a8b9b5fa0 RCX: 00007f9a8b78e9a9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f9a8b810d69 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9a8b9b5fa0 R15: 00007ffe5eaa6b88
 </TASK>
sched: DL replenish lagged too much
