nla_parse: 33 callbacks suppressed
netlink: 6 bytes leftover after parsing attributes in process `syz-executor.1'.
==================================================================
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 ffff8880993c7c48 by task systemd-udevd/4637

CPU: 0 PID: 4637 Comm: systemd-udevd Not tainted 4.14.292-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 __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
 __debug_check_no_obj_freed lib/debugobjects.c:760 [inline]
 debug_check_no_obj_freed+0x2c0/0x680 lib/debugobjects.c:776
 kfree+0xb9/0x250 mm/slab.c:3814
 kvfree+0x45/0x50 mm/util.c:449
 seq_release+0x4f/0x70 fs/seq_file.c:371
 kernfs_fop_release+0xdc/0x180 fs/kernfs/file.c:781
 __fput+0x25f/0x7a0 fs/file_table.c:210
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f96f9b13a4b
RSP: 002b:00007ffd8b5109b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 000055694246aa10 RCX: 00007f96f9b13a4b
RDX: 00007f96f9e37900 RSI: 0000000000000001 RDI: 000000000000000e
RBP: 00007f96f9e38440 R08: 00007f96fad0b8c0 R09: 000055694246aa10
R10: 00007f96fad0b8c0 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000041349701 R14: 0000556942458650 R15: 000000000000121d

The buggy address belongs to the page:
page:ffffea000264f1c0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0xfff00000000000()
raw: 00fff00000000000 0000000000000000 0000000000000000 00000000ffffffff
raw: ffffea000264f1e0 ffffea000264f1e0 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880993c7b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1
 ffff8880993c7b80: f1 f1 f1 04 f2 00 f3 f3 f3 00 00 00 00 00 00 00
>ffff8880993c7c00: 00 00 00 f1 f1 f1 f1 04 f3 f3 f3 00 00 00 00 00
                                              ^
 ffff8880993c7c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880993c7d00: 00 00 f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 00 00
==================================================================