RBP: 00007fa3d4a88ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000800100020001 R11: 0000000000000246 R12: 0000000000000003
R13: 00007ffdfaebaf0f R14: 00007fa3d4a899c0 R15: 000000000119c034
overlayfs: unrecognized mount option "=on" or missing value
==================================================================
BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:372 [inline]
BUG: KASAN: slab-out-of-bounds in memcpy_dir crypto/scatterwalk.c:28 [inline]
BUG: KASAN: slab-out-of-bounds in scatterwalk_copychunks+0x256/0x680 crypto/scatterwalk.c:43
Read of size 4096 at addr ffff88804ef95000 by task syz-executor.3/7035

CPU: 1 PID: 7035 Comm: syz-executor.3 Not tainted 4.14.217-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+0x1b2/0x281 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+0x6f/0x80 mm/kasan/report.c:409
 memcpy+0x20/0x50 mm/kasan/kasan.c:302
 memcpy include/linux/string.h:372 [inline]
 memcpy_dir crypto/scatterwalk.c:28 [inline]
 scatterwalk_copychunks+0x256/0x680 crypto/scatterwalk.c:43
 scatterwalk_map_and_copy crypto/scatterwalk.c:72 [inline]
 scatterwalk_map_and_copy+0x100/0x1a0 crypto/scatterwalk.c:60
 gcmaes_encrypt.constprop.0+0x5b5/0xc00 arch/x86/crypto/aesni-intel_glue.c:778

Allocated by task 5845:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
 kmem_cache_alloc+0x124/0x3c0 mm/slab.c:3552
 proc_alloc_inode+0x18/0x1a0 fs/proc/inode.c:62
 alloc_inode+0x5d/0x170 fs/inode.c:210
 new_inode_pseudo fs/inode.c:899 [inline]
 new_inode+0x1d/0xf0 fs/inode.c:928
 proc_pid_make_inode+0x22/0x230 fs/proc/base.c:1762
 proc_pident_instantiate+0x78/0x280 fs/proc/base.c:2448
 proc_pident_lookup+0x181/0x200 fs/proc/base.c:2497
 lookup_open+0x5c4/0x1750 fs/namei.c:3220
 do_last fs/namei.c:3334 [inline]
 path_openat+0x14bb/0x2970 fs/namei.c:3569
 do_filp_open+0x179/0x3c0 fs/namei.c:3603
 do_sys_open+0x296/0x410 fs/open.c:1081
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb

Freed by task 17:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kmem_cache_free+0x7c/0x2b0 mm/slab.c:3758
 __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+0x254/0xa1d kernel/softirq.c:288

The buggy address belongs to the object at ffff88804ef95180
 which belongs to the cache proc_inode_cache of size 1024
The buggy address is located 384 bytes to the left of
 1024-byte region [ffff88804ef95180, ffff88804ef95580)
The buggy address belongs to the page:
page:ffffea00013be540 count:1 mapcount:0 mapping:ffff88804ef95180 index:0xffff88804ef95ffd
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffff88804ef95180 ffff88804ef95ffd 0000000100000003
raw: ffffea00017b0860 ffffea00028389a0 ffff8880b5f92e40 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88804ef94f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88804ef94f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88804ef95000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff88804ef95080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88804ef95100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================