WARNING: can't dereference registers at 1ffff110174a0f8e for ip apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
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BUG: KASAN: stack-out-of-bounds in deref_stack_regs arch/x86/kernel/unwind_orc.c:311 [inline]
BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x146f/0x17d0 arch/x86/kernel/unwind_orc.c:444
Read of size 8 at addr ffff8880573b7580 by task syz-executor.4/7476

CPU: 1 PID: 7476 Comm: syz-executor.4 Not tainted 4.14.203-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x194 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:311 [inline]
 unwind_next_frame+0x146f/0x17d0 arch/x86/kernel/unwind_orc.c:444
 perf_callchain_kernel+0x38c/0x520 arch/x86/events/core.c:2343
 get_perf_callchain+0x2df/0x740 kernel/events/callchain.c:217
 perf_callchain+0x147/0x190 kernel/events/callchain.c:190
 perf_prepare_sample+0xd77/0x1380 kernel/events/core.c:6163
 __perf_event_output kernel/events/core.c:6279 [inline]
 perf_event_output_forward+0xc9/0x1f0 kernel/events/core.c:6297
 __perf_event_overflow+0x113/0x310 kernel/events/core.c:7542
 perf_swevent_overflow kernel/events/core.c:7618 [inline]
 perf_swevent_event+0x299/0x460 kernel/events/core.c:7646
 perf_tp_event+0x540/0x6e0 kernel/events/core.c:8080
 perf_trace_run_bpf_submit+0x119/0x200 kernel/events/core.c:8050
 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
 __debug_check_no_obj_freed lib/debugobjects.c:760 [inline]
 debug_check_no_obj_freed+0x2c0/0x674 lib/debugobjects.c:776
 kmem_cache_free+0x156/0x2b0 mm/slab.c:3757
 mempool_free+0xcf/0x1d0 mm/mempool.c:439
 bio_free+0x11f/0x1a0 block/bio.c:265
 bio_put+0x59/0x70 block/bio.c:558
 dio_bio_complete+0x32e/0x5d0 fs/direct-io.c:563
 dio_await_completion fs/direct-io.c:581 [inline]
 do_blockdev_direct_IO fs/direct-io.c:1393 [inline]
 __blockdev_direct_IO+0x79c9/0xdc60 fs/direct-io.c:1422
 ext4_direct_IO_write fs/ext4/inode.c:3716 [inline]
 ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3857
 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958
 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137
 ext4_file_write_iter+0x276/0xd20 fs/ext4/file.c:270
 call_write_iter include/linux/fs.h:1778 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x44c/0x630 fs/read_write.c:482
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45deb9
RSP: 002b:00007f49ae7c2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000003ac00 RCX: 000000000045deb9
RDX: 00000000175d900f RSI: 0000000020000200 RDI: 0000000000000004
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffcc30bee6f R14: 00007f49ae7c39c0 R15: 000000000118bf2c

The buggy address belongs to the page:
page:ffffea00015cedc0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0xfff00000000000()
raw: 00fff00000000000 0000000000000000 0000000000000000 00000000ffffffff
raw: 0000000000000000 0000000100000001 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880573b7480: 00 00 00 00 f1 f1 f1 f1 f1 f1 04 f2 00 f3 f3 f3
 ffff8880573b7500: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 04 f3
>ffff8880573b7580: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                   ^
 ffff8880573b7600: 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f3 f3
 ffff8880573b7680: f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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