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BUG: KASAN: slab-out-of-bounds in put_unaligned_le64 include/linux/unaligned/access_ok.h:50 [inline]
BUG: KASAN: slab-out-of-bounds in crypto_sha3_final+0xefa/0x10a0 crypto/sha3_generic.c:235
Write of size 8 at addr ffff8801661b44dc by task syz-executor2/8147

CPU: 1 PID: 8147 Comm: syz-executor2 Not tainted 4.18.0-rc2+ #117
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
 __asan_report_store8_noabort+0x17/0x20 mm/kasan/report.c:438
 put_unaligned_le64 include/linux/unaligned/access_ok.h:50 [inline]
 crypto_sha3_final+0xefa/0x10a0 crypto/sha3_generic.c:235
 crypto_shash_final+0x104/0x260 crypto/shash.c:152
 kdf_ctr security/keys/dh.c:186 [inline]
 keyctl_dh_compute_kdf security/keys/dh.c:217 [inline]
 __keyctl_dh_compute+0x1198/0x1be0 security/keys/dh.c:389
 keyctl_dh_compute+0xc5/0x11f security/keys/dh.c:425
 __do_sys_keyctl security/keys/keyctl.c:1741 [inline]
 __se_sys_keyctl security/keys/keyctl.c:1637 [inline]
 __x64_sys_keyctl+0x12a/0x3b0 security/keys/keyctl.c:1637
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455a99
Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f543ddadc68 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00007f543ddae6d4 RCX: 0000000000455a99
RDX: 0000000020000480 RSI: 0000000020000440 RDI: 0000000000000017
RBP: 000000000072bea0 R08: 0000000020000580 R09: 0000000000000000
R10: 000000000000004a R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004bfd68 R14: 00000000004cefb8 R15: 0000000000000000

Allocated by task 8147:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x14e/0x760 mm/slab.c:3727
 kmalloc include/linux/slab.h:518 [inline]
 keyctl_dh_compute_kdf security/keys/dh.c:211 [inline]
 __keyctl_dh_compute+0x1000/0x1be0 security/keys/dh.c:389
 keyctl_dh_compute+0xc5/0x11f security/keys/dh.c:425
 __do_sys_keyctl security/keys/keyctl.c:1741 [inline]
 __se_sys_keyctl security/keys/keyctl.c:1637 [inline]
 __x64_sys_keyctl+0x12a/0x3b0 security/keys/keyctl.c:1637
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8801661b4480
 which belongs to the cache kmalloc-96 of size 96
The buggy address is located 92 bytes inside of
 96-byte region [ffff8801661b4480, ffff8801661b44e0)
The buggy address belongs to the page:
page:ffffea0005986d00 count:1 mapcount:0 mapping:ffff8801da8004c0 index:0x0
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffffea000723cf08 ffffea0006afc648 ffff8801da8004c0
raw: 0000000000000000 ffff8801661b4000 0000000100000020 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801661b4380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801661b4400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8801661b4480: 00 00 00 00 00 00 00 00 00 00 00 04 fc fc fc fc
                                                    ^
 ffff8801661b4500: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
 ffff8801661b4580: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
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