==================================================================
BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x9a/0xc0 lib/usercopy.c:27
Read of size 337 at addr ffff8801ad8cfffd by task syz-executor3/11269

CPU: 1 PID: 11269 Comm: syz-executor3 Not tainted 4.14.76+ #19
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x11b lib/dump_stack.c:53
 print_address_description+0x60/0x22b mm/kasan/report.c:252
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report.cold.6+0x11b/0x2dd mm/kasan/report.c:409
 _copy_to_user+0x9a/0xc0 lib/usercopy.c:27
 copy_to_user include/linux/uaccess.h:155 [inline]
 bpf_test_finish.isra.0+0xc8/0x190 net/bpf/test_run.c:59
 bpf_prog_test_run_skb+0x4d0/0x8c0 net/bpf/test_run.c:144
 bpf_prog_test_run kernel/bpf/syscall.c:1330 [inline]
 SYSC_bpf kernel/bpf/syscall.c:1602 [inline]
 SyS_bpf+0x79d/0x3640 kernel/bpf/syscall.c:1547
 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x457569
RSP: 002b:00007fcf3e073c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 0000000000000028 RSI: 00000000200000c0 RDI: 000000000000000a
RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcf3e0746d4
R13: 00000000004bd892 R14: 00000000004cc208 R15: 00000000ffffffff

Allocated by task 10653:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc.part.1+0x4f/0xd0 mm/kasan/kasan.c:551
 kmem_cache_alloc_trace+0x138/0x300 mm/slub.c:2750
 kmalloc include/linux/slab.h:488 [inline]
 audit_log_d_path+0x9f/0x170 kernel/audit.c:1973
 dump_common_audit_data security/lsm_audit.c:251 [inline]
 common_lsm_audit+0x821/0x1d00 security/lsm_audit.c:459
 slow_avc_audit+0x14a/0x1d0 security/selinux/avc.c:771
 avc_audit security/selinux/include/avc.h:141 [inline]
 avc_has_perm+0x2f2/0x390 security/selinux/avc.c:1146
 inode_has_perm.isra.21+0xff/0x160 security/selinux/hooks.c:1771
 selinux_mmap_file+0x130/0x220 security/selinux/hooks.c:3621
 security_mmap_file+0x93/0x170 security/security.c:926
 vm_mmap_pgoff+0xdf/0x1d0 mm/util.c:329
 vm_mmap+0x60/0x80 mm/util.c:352
 elf_map+0x1c8/0x220 fs/binfmt_elf.c:373
 load_elf_binary+0xbf8/0x4530 fs/binfmt_elf.c:990
 search_binary_handler+0x13f/0x6c0 fs/exec.c:1638
 exec_binprm fs/exec.c:1680 [inline]
 do_execveat_common.isra.14+0x1109/0x1d60 fs/exec.c:1802
 do_execve fs/exec.c:1847 [inline]
 SYSC_execve fs/exec.c:1928 [inline]
 SyS_execve+0x34/0x40 fs/exec.c:1923
 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7

Freed by task 10653:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0xac/0x190 mm/kasan/kasan.c:524
 slab_free_hook mm/slub.c:1389 [inline]
 slab_free_freelist_hook mm/slub.c:1410 [inline]
 slab_free mm/slub.c:2966 [inline]
 kfree+0xf5/0x310 mm/slub.c:3897
 audit_log_d_path+0xf2/0x170 kernel/audit.c:1984
 dump_common_audit_data security/lsm_audit.c:251 [inline]
 common_lsm_audit+0x821/0x1d00 security/lsm_audit.c:459
 slow_avc_audit+0x14a/0x1d0 security/selinux/avc.c:771
 avc_audit security/selinux/include/avc.h:141 [inline]
 avc_has_perm+0x2f2/0x390 security/selinux/avc.c:1146
 inode_has_perm.isra.21+0xff/0x160 security/selinux/hooks.c:1771
 selinux_mmap_file+0x130/0x220 security/selinux/hooks.c:3621
 security_mmap_file+0x93/0x170 security/security.c:926
 vm_mmap_pgoff+0xdf/0x1d0 mm/util.c:329
 vm_mmap+0x60/0x80 mm/util.c:352
 elf_map+0x1c8/0x220 fs/binfmt_elf.c:373
 load_elf_binary+0xbf8/0x4530 fs/binfmt_elf.c:990
 search_binary_handler+0x13f/0x6c0 fs/exec.c:1638
 exec_binprm fs/exec.c:1680 [inline]
 do_execveat_common.isra.14+0x1109/0x1d60 fs/exec.c:1802
 do_execve fs/exec.c:1847 [inline]
 SYSC_execve fs/exec.c:1928 [inline]
 SyS_execve+0x34/0x40 fs/exec.c:1923
 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7

The buggy address belongs to the object at ffff8801ad8cc200
 which belongs to the cache kmalloc-8192 of size 8192
The buggy address is located 7677 bytes to the right of
 8192-byte region [ffff8801ad8cc200, ffff8801ad8ce200)
The buggy address belongs to the page:
page:ffffea0006b63200 count:1 mapcount:0 mapping:          (null) index:0x0 compound_mapcount: 0
flags: 0x4000000000008100(slab|head)
raw: 4000000000008100 0000000000000000 0000000000000000 0000000100030003
raw: ffffea0007491e00 0000000200000002 ffff8801da802400 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801ad8cfe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801ad8cff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8801ad8cff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                                ^
 ffff8801ad8d0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801ad8d0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================