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BUG: KASAN: slab-out-of-bounds in tgr192_final+0x4fe/0x560 crypto/tgr192.c:604
Write of size 8 at addr ffff8801d89507a0 by task syz-executor1/15174

CPU: 1 PID: 15174 Comm: syz-executor1 Not tainted 4.18.0-rc2+ #118
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
 tgr192_final+0x4fe/0x560 crypto/tgr192.c:604
 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:00007f016179fc68 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00007f01617a06d4 RCX: 0000000000455a99
RDX: 0000000020000300 RSI: 0000000020000000 RDI: 0000000000000017
RBP: 000000000072bea0 R08: 0000000020000080 R09: 0000000000000000
R10: 000000000000009b R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004bfd68 R14: 00000000004cefb8 R15: 0000000000000000

Allocated by task 15174:
 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 7:
 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
 kset_release+0x16/0x20 lib/kobject.c:868
 kobject_cleanup lib/kobject.c:643 [inline]
 kobject_release lib/kobject.c:672 [inline]
 kref_put include/linux/kref.h:70 [inline]
 kobject_put+0x194/0x280 lib/kobject.c:689
 kset_unregister+0x2b/0x40 lib/kobject.c:831
 remove_queue_kobjects net/core/net-sysfs.c:1427 [inline]
 netdev_unregister_kobject+0x22d/0x2e0 net/core/net-sysfs.c:1566
 rollback_registered_many+0x890/0xef0 net/core/dev.c:7496
 unregister_netdevice_many+0xfb/0x4d0 net/core/dev.c:8577
 ip6gre_exit_batch_net+0x5d1/0x7f0 net/ipv6/ip6_gre.c:1609
 ops_exit_list.isra.7+0x105/0x160 net/core/net_namespace.c:155
 cleanup_net+0x537/0xb50 net/core/net_namespace.c:523
 process_one_work+0xc73/0x1ba0 kernel/workqueue.c:2153
 worker_thread+0x189/0x13c0 kernel/workqueue.c:2296
 kthread+0x345/0x410 kernel/kthread.c:240
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412

The buggy address belongs to the object at ffff8801d8950700
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 160 bytes inside of
 192-byte region [ffff8801d8950700, ffff8801d89507c0)
The buggy address belongs to the page:
page:ffffea0007625400 count:1 mapcount:0 mapping:ffff8801da800040 index:0x0
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffffea0006cec708 ffffea000730d6c8 ffff8801da800040
raw: 0000000000000000 ffff8801d8950000 0000000100000010 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801d8950680: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801d8950700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8801d8950780: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
                               ^
 ffff8801d8950800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801d8950880: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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