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BUG: KASAN: slab-out-of-bounds in rmd320_final+0x211/0x250 crypto/rmd320.c:358
Write of size 4 at addr ffff8801c9e58bc0 by task syz-executor4/14276

CPU: 1 PID: 14276 Comm: syz-executor4 Not tainted 4.18.0-rc2+ #21
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_store4_noabort+0x17/0x20 mm/kasan/report.c:437
 rmd320_final+0x211/0x250 crypto/rmd320.c:358
 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
 compat_keyctl_dh_compute+0x2d0/0x400 security/keys/compat_dh.c:39
 __do_compat_sys_keyctl security/keys/compat.c:136 [inline]
 __se_compat_sys_keyctl security/keys/compat.c:59 [inline]
 __ia32_compat_sys_keyctl+0x137/0x3b0 security/keys/compat.c:59
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fd9cb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5fd50ac EFLAGS: 00000282 ORIG_RAX: 0000000000000120
RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 0000000020000140
RDX: 0000000020001a00 RSI: 000000000000009d RDI: 0000000020000180
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

Allocated by task 14276:
 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
 compat_keyctl_dh_compute+0x2d0/0x400 security/keys/compat_dh.c:39
 __do_compat_sys_keyctl security/keys/compat.c:136 [inline]
 __se_compat_sys_keyctl security/keys/compat.c:59 [inline]
 __ia32_compat_sys_keyctl+0x137/0x3b0 security/keys/compat.c:59
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139

Freed by task 12682:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
 __cache_free mm/slab.c:3498 [inline]
 kfree+0xd9/0x260 mm/slab.c:3813
 kzfree+0x28/0x30 mm/slab_common.c:1539
 crypto_destroy_tfm+0x158/0x300 crypto/api.c:584
 crypto_free_skcipher include/crypto/skcipher.h:212 [inline]
 skcipher_release+0x19/0x20 crypto/algif_skcipher.c:315
 alg_do_release crypto/af_alg.c:119 [inline]
 alg_bind+0x41e/0x560 crypto/af_alg.c:202
 __sys_bind+0x331/0x440 net/socket.c:1528
 __do_sys_bind net/socket.c:1539 [inline]
 __se_sys_bind net/socket.c:1537 [inline]
 __ia32_sys_bind+0x72/0xb0 net/socket.c:1537
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139

The buggy address belongs to the object at ffff8801c9e58b00
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 0 bytes to the right of
 192-byte region [ffff8801c9e58b00, ffff8801c9e58bc0)
The buggy address belongs to the page:
page:ffffea0007279600 count:1 mapcount:0 mapping:ffff8801da800040 index:0x0
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffffea0006c1d5c8 ffffea00072b27c8 ffff8801da800040
raw: 0000000000000000 ffff8801c9e58000 0000000100000010 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801c9e58a80: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801c9e58b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8801c9e58b80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
                                           ^
 ffff8801c9e58c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801c9e58c80: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
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