IPVS: ftp: loaded support on port[0] = 21
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BUG: KASAN: use-after-free in __write_once_size include/linux/compiler.h:218 [inline]
BUG: KASAN: use-after-free in __hlist_del include/linux/list.h:702 [inline]
BUG: KASAN: use-after-free in hlist_del_init include/linux/list.h:717 [inline]
BUG: KASAN: use-after-free in __xfrm_policy_unlink+0x977/0xa00 net/xfrm/xfrm_policy.c:2213
Write of size 8 at addr ffff8880a472da68 by task syz-executor5/29544
CPU: 1 PID: 29544 Comm: syz-executor5 Not tainted 4.20.0+ #3
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+0x1db/0x2d0 lib/dump_stack.c:113
print_address_description.cold+0x7c/0x20d mm/kasan/report.c:256
kasan_report_error mm/kasan/report.c:354 [inline]
kasan_report mm/kasan/report.c:412 [inline]
kasan_report.cold+0x8c/0x2ba mm/kasan/report.c:396
__asan_report_store8_noabort+0x17/0x20 mm/kasan/report.c:438
__write_once_size include/linux/compiler.h:218 [inline]
__hlist_del include/linux/list.h:702 [inline]
hlist_del_init include/linux/list.h:717 [inline]
__xfrm_policy_unlink+0x977/0xa00 net/xfrm/xfrm_policy.c:2213
xfrm_policy_flush+0x331/0x460 net/xfrm/xfrm_policy.c:1789
pfkey_spdflush+0xaf/0x3c0 net/key/af_key.c:2785
pfkey_process+0x6d2/0x810 net/key/af_key.c:2844
pfkey_sendmsg+0x5bb/0xfc0 net/key/af_key.c:3683
sock_sendmsg_nosec net/socket.c:621 [inline]
sock_sendmsg+0xdd/0x130 net/socket.c:631
___sys_sendmsg+0x7ec/0x910 net/socket.c:2116
__sys_sendmsg+0x112/0x270 net/socket.c:2154
__do_sys_sendmsg net/socket.c:2163 [inline]
__se_sys_sendmsg net/socket.c:2161 [inline]
__x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161
do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457ec9
Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f620ba0cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f620ba0d6d4
R13: 00000000004c5305 R14: 00000000004d8d70 R15: 00000000ffffffff
Allocated by task 29096:
save_stack+0x45/0xd0 mm/kasan/kasan.c:448
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc mm/kasan/kasan.c:553 [inline]
kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:531
__do_kmalloc mm/slab.c:3722 [inline]
__kmalloc+0x15d/0x750 mm/slab.c:3731
kmalloc include/linux/slab.h:551 [inline]
sock_kmalloc net/core/sock.c:1992 [inline]
sock_kmalloc+0x166/0x200 net/core/sock.c:1983
af_alg_alloc_areq+0x7c/0x300 crypto/af_alg.c:1097
_aead_recvmsg crypto/algif_aead.c:157 [inline]
aead_recvmsg+0x49d/0x1b40 crypto/algif_aead.c:334
sock_recvmsg_nosec net/socket.c:794 [inline]
sock_recvmsg net/socket.c:801 [inline]
sock_recvmsg+0xd0/0x110 net/socket.c:797
sock_read_iter+0x3ba/0x5a0 net/socket.c:878
call_read_iter include/linux/fs.h:1851 [inline]
do_iter_readv_writev+0x6f4/0xae0 fs/read_write.c:678
do_iter_read+0x268/0x650 fs/read_write.c:922
vfs_readv+0x175/0x1c0 fs/read_write.c:986
do_readv+0x11a/0x300 fs/read_write.c:1019
__do_sys_readv fs/read_write.c:1106 [inline]
__se_sys_readv fs/read_write.c:1103 [inline]
__x64_sys_readv+0x75/0xb0 fs/read_write.c:1103
do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Freed by task 29096:
save_stack+0x45/0xd0 mm/kasan/kasan.c:448
set_track mm/kasan/kasan.c:460 [inline]
__kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521
kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
__cache_free mm/slab.c:3498 [inline]
kfree+0xcf/0x230 mm/slab.c:3817
kobject: 'tx-0' (0000000052ecb780): kobject_uevent_env
__sock_kfree_s net/core/sock.c:2013 [inline]
sock_kfree_s+0x29/0x70 net/core/sock.c:2019
af_alg_free_resources+0x71/0x90 crypto/af_alg.c:1033
_aead_recvmsg crypto/algif_aead.c:321 [inline]
aead_recvmsg+0x979/0x1b40 crypto/algif_aead.c:334
sock_recvmsg_nosec net/socket.c:794 [inline]
sock_recvmsg net/socket.c:801 [inline]
sock_recvmsg+0xd0/0x110 net/socket.c:797
kobject: 'tx-0' (0000000052ecb780): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0'
sock_read_iter+0x3ba/0x5a0 net/socket.c:878
call_read_iter include/linux/fs.h:1851 [inline]
do_iter_readv_writev+0x6f4/0xae0 fs/read_write.c:678
do_iter_read+0x268/0x650 fs/read_write.c:922
vfs_readv+0x175/0x1c0 fs/read_write.c:986
do_readv+0x11a/0x300 fs/read_write.c:1019
netlink: del zone limit has 4 unknown bytes
__do_sys_readv fs/read_write.c:1106 [inline]
__se_sys_readv fs/read_write.c:1103 [inline]
__x64_sys_readv+0x75/0xb0 fs/read_write.c:1103
do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
kobject: 'tunl0' (000000006d1f64da): kobject_add_internal: parent: 'net', set: 'devices'
entry_SYSCALL_64_after_hwframe+0x49/0xbe
The buggy address belongs to the object at ffff8880a472d6c0
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 936 bytes inside of
1024-byte region [ffff8880a472d6c0, ffff8880a472dac0)
The buggy address belongs to the page:
page:ffffea000291cb00 count:1 mapcount:0 mapping:ffff88812c3f0ac0 index:0x0 compound_mapcount: 0
flags: 0x1fffc0000010200(slab|head)
raw: 01fffc0000010200 ffffea00017e2b08 ffffea0002408488 ffff88812c3f0ac0
raw: 0000000000000000 ffff8880a472c040 0000000100000007 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8880a472d900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880a472d980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880a472da00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880a472da80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff8880a472db00: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
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