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BUG: KASAN: use-after-free in __le32_to_cpup include/uapi/linux/byteorder/little_endian.h:58 [inline]
BUG: KASAN: use-after-free in le32_to_cpuvp crypto/chacha20_generic.c:19 [inline]
BUG: KASAN: use-after-free in crypto_chacha20_init crypto/chacha20_generic.c:58 [inline]
BUG: KASAN: use-after-free in crypto_chacha20_crypt+0xaf1/0xbd0 crypto/chacha20_generic.c:91
Read of size 4 at addr ffff8801db16b240 by task kworker/1:5/10173

CPU: 1 PID: 10173 Comm: kworker/1:5 Not tainted 4.15.0-rc3+ #156
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'.
Workqueue: crypto cryptd_queue_worker
netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'.
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 print_address_description+0x73/0x250 mm/kasan/report.c:252
netlink: 13 bytes leftover after parsing attributes in process `syz-executor3'.
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report+0x25b/0x340 mm/kasan/report.c:409
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:429
 __le32_to_cpup include/uapi/linux/byteorder/little_endian.h:58 [inline]
 le32_to_cpuvp crypto/chacha20_generic.c:19 [inline]
 crypto_chacha20_init crypto/chacha20_generic.c:58 [inline]
 crypto_chacha20_crypt+0xaf1/0xbd0 crypto/chacha20_generic.c:91
 chacha20_simd+0xe4/0x410 arch/x86/crypto/chacha20_glue.c:78
netlink: 13 bytes leftover after parsing attributes in process `syz-executor3'.
 crypto_skcipher_decrypt include/crypto/skcipher.h:463 [inline]
 cryptd_skcipher_decrypt+0x2de/0x5a0 crypto/cryptd.c:523
 cryptd_queue_worker+0xff/0x1b0 crypto/cryptd.c:190
 process_one_work+0xbf3/0x1bc0 kernel/workqueue.c:2112
 worker_thread+0x223/0x1990 kernel/workqueue.c:2246
 kthread+0x33c/0x400 kernel/kthread.c:238
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:441

Allocated by task 23478:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551
 kmem_cache_alloc_trace+0x136/0x750 mm/slab.c:3610
 kmalloc include/linux/slab.h:499 [inline]
 kzalloc include/linux/slab.h:688 [inline]
 xfrm_state_alloc+0xb8/0x630 net/xfrm/xfrm_state.c:565
 xfrm_state_find+0x1ace/0x3210 net/xfrm/xfrm_state.c:1002
 xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:1388 [inline]
 xfrm_tmpl_resolve+0x309/0xc00 net/xfrm/xfrm_policy.c:1432
 xfrm_resolve_and_create_bundle+0x12c/0x2770 net/xfrm/xfrm_policy.c:1823
 xfrm_lookup+0x156b/0x23e0 net/xfrm/xfrm_policy.c:2148
 xfrm_lookup_route+0x39/0x1a0 net/xfrm/xfrm_policy.c:2266
 ip_route_output_flow+0x7c/0xa0 net/ipv4/route.c:2559
 raw_sendmsg+0xbed/0x38c0 net/ipv4/raw.c:638
 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:763
 sock_sendmsg_nosec net/socket.c:636 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:646
 SYSC_sendto+0x352/0x5a0 net/socket.c:1727
 SyS_sendto+0x40/0x50 net/socket.c:1695
 entry_SYSCALL_64_fastpath+0x1f/0x96

Freed by task 10173:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0x71/0xc0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3488 [inline]
 kfree+0xca/0x250 mm/slab.c:3803
 xfrm_state_gc_destroy net/xfrm/xfrm_state.c:453 [inline]
 xfrm_state_gc_task+0x53e/0x6c0 net/xfrm/xfrm_state.c:469
 process_one_work+0xbf3/0x1bc0 kernel/workqueue.c:2112
 worker_thread+0x223/0x1990 kernel/workqueue.c:2246
 kthread+0x33c/0x400 kernel/kthread.c:238
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:441

The buggy address belongs to the object at ffff8801db16b240
 which belongs to the cache kmalloc-1024 of size 1024
The buggy address is located 0 bytes inside of
 1024-byte region [ffff8801db16b240, ffff8801db16b640)
The buggy address belongs to the page:
page:000000000f3a9d81 count:1 mapcount:0 mapping:00000000322557b1 index:0x0 compound_mapcount: 0
flags: 0x2fffc0000008100(slab|head)
raw: 02fffc0000008100 ffff8801db16a040 0000000000000000 0000000100000007
raw: ffffea000756f320 ffffea0007450d20 ffff8801db000ac0 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801db16b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801db16b180: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff8801db16b200: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
                                           ^
 ffff8801db16b280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801db16b300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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