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BUG: KASAN: stack-out-of-bounds in deref_stack_regs arch/x86/kernel/unwind_orc.c:304 [inline]
BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x146f/0x17d0 arch/x86/kernel/unwind_orc.c:437
Read of size 8 at addr ffff8880ba507cb0 by task syz-executor361/7960

CPU: 1 PID: 7960 Comm: syz-executor361 Not tainted 4.14.292-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351
 kasan_report mm/kasan/report.c:409 [inline]
 __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430
 deref_stack_regs arch/x86/kernel/unwind_orc.c:304 [inline]
 unwind_next_frame+0x146f/0x17d0 arch/x86/kernel/unwind_orc.c:437
 perf_callchain_kernel+0x38c/0x520 arch/x86/events/core.c:2344
 get_perf_callchain+0x2de/0x740 kernel/events/callchain.c:217
 perf_callchain+0x147/0x190 kernel/events/callchain.c:190
 perf_prepare_sample+0xc9a/0x1370 kernel/events/core.c:6166
 __perf_event_output kernel/events/core.c:6282 [inline]
 perf_event_output_forward+0xc9/0x1f0 kernel/events/core.c:6300
 __perf_event_overflow+0x113/0x310 kernel/events/core.c:7549
 perf_swevent_overflow kernel/events/core.c:7625 [inline]
 perf_swevent_event+0x3c8/0x460 kernel/events/core.c:7663
 perf_tp_event+0x540/0x6e0 kernel/events/core.c:8087
 perf_trace_run_bpf_submit+0x119/0x200 kernel/events/core.c:8057
 perf_trace_lock+0x2d6/0x490 include/trace/events/lock.h:39
 trace_lock_release include/trace/events/lock.h:58 [inline]
 lock_release+0x4df/0x870 kernel/locking/lockdep.c:4016
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:158 [inline]
 _raw_spin_unlock_irqrestore+0x1b/0xe0 kernel/locking/spinlock.c:192
 free_object+0xe4/0x240 lib/debugobjects.c:233
 __debug_check_no_obj_freed lib/debugobjects.c:765 [inline]
 debug_check_no_obj_freed+0x372/0x680 lib/debugobjects.c:776
 kmem_cache_free+0x156/0x2b0 mm/slab.c:3757
 __rcu_reclaim kernel/rcu/rcu.h:195 [inline]
 rcu_do_batch kernel/rcu/tree.c:2699 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline]
 rcu_process_callbacks+0x780/0x1180 kernel/rcu/tree.c:2946
 __do_softirq+0x24d/0x9ff kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x193/0x240 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:lock_release+0x41e/0x870 kernel/locking/lockdep.c:4020
RSP: 0018:ffff8880a29b79c0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff11e1359 RBX: 1ffff11014536f3b RCX: 1ffff11012e0e5e6
RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000286
RBP: ffff888097072680 R08: 0000000000000000 R09: 0000000000000001
R10: ffff8880a29b7880 R11: 0000000000000001 R12: 4266a10b7c0d49cf
R13: 0000000000000003 R14: ffff888097072680 R15: 0000000000000002
 page_remove_rmap+0x96/0xe0 mm/rmap.c:1296
 zap_pte_range mm/memory.c:1375 [inline]
 zap_pmd_range mm/memory.c:1479 [inline]
 zap_pud_range mm/memory.c:1508 [inline]
 zap_p4d_range mm/memory.c:1529 [inline]
 unmap_page_range+0xf41/0x1d90 mm/memory.c:1550
 unmap_single_vma+0x147/0x2b0 mm/memory.c:1595
 unmap_vmas+0x9d/0x160 mm/memory.c:1625
 exit_mmap+0x270/0x4d0 mm/mmap.c:3073
 __mmput kernel/fork.c:931 [inline]
 mmput kernel/fork.c:952 [inline]
 mmput+0xfa/0x420 kernel/fork.c:947
 exit_mm kernel/exit.c:548 [inline]
 do_exit+0x984/0x2850 kernel/exit.c:855
 do_group_exit+0x100/0x2e0 kernel/exit.c:965
 SYSC_exit_group kernel/exit.c:976 [inline]
 SyS_exit_group+0x19/0x20 kernel/exit.c:974
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f1f65fe8ca9
RSP: 002b:00007ffd9fd0f5c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f1f6605c270 RCX: 00007f1f65fe8ca9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007f1f6605c270
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001

The buggy address belongs to the page:
page:ffffea0002e941c0 count:1 mapcount:0 mapping:          (null) index:0x0
flags: 0xfff00000000800(reserved)
raw: 00fff00000000800 0000000000000000 0000000000000000 00000001ffffffff
raw: ffffea0002e941e0 ffffea0002e941e0 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880ba507b80: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 f1 f1
 ffff8880ba507c00: 04 f2 00 f3 f3 f3 00 00 00 00 00 00 00 00 00 00
>ffff8880ba507c80: f1 f1 f1 f1 04 f3 f3 f3 00 00 00 00 00 00 00 00
                                     ^
 ffff8880ba507d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880ba507d80: 00 00 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 00 00
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