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BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:185 [inline]
BUG: KASAN: use-after-free in radix_tree_load_root lib/radix-tree.c:602 [inline]
BUG: KASAN: use-after-free in radix_tree_next_chunk+0x89f/0x8c0 lib/radix-tree.c:1736
Read of size 8 at addr ffff888055c675c8 by task syz-executor.1/10257
CPU: 0 PID: 10257 Comm: syz-executor.1 Not tainted 4.14.279-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351
kasan_report mm/kasan/report.c:409 [inline]
__asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430
__read_once_size include/linux/compiler.h:185 [inline]
radix_tree_load_root lib/radix-tree.c:602 [inline]
radix_tree_next_chunk+0x89f/0x8c0 lib/radix-tree.c:1736
radix_tree_iter_lookup include/linux/radix-tree.h:440 [inline]
ida_remove+0x9b/0x210 lib/idr.c:377
ida_simple_remove+0x31/0x50 lib/idr.c:503
ipvlan_link_new+0x50c/0xfa0 drivers/net/ipvlan/ipvlan_main.c:648
rtnl_newlink+0xf7c/0x1830 net/core/rtnetlink.c:2730
rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4322
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2455
netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322
netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f6aad6ed0e9
RSP: 002b:00007f6aac041168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f6aad800030 RCX: 00007f6aad6ed0e9
RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000006
RBP: 00007f6aad74708d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffe24268ef R14: 00007f6aac041300 R15: 0000000000022000
Allocated by task 10257:
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
kmem_cache_alloc_trace+0x131/0x3d0 mm/slab.c:3618
kmalloc include/linux/slab.h:488 [inline]
kzalloc include/linux/slab.h:661 [inline]
ipvlan_port_create drivers/net/ipvlan/ipvlan_main.c:140 [inline]
ipvlan_link_new+0x64f/0xfa0 drivers/net/ipvlan/ipvlan_main.c:577
rtnl_newlink+0xf7c/0x1830 net/core/rtnetlink.c:2730
rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4322
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2455
netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322
netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
Freed by task 10257:
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
__cache_free mm/slab.c:3496 [inline]
kfree+0xc9/0x250 mm/slab.c:3815
ipvlan_uninit+0xb6/0xe0 drivers/net/ipvlan/ipvlan_main.c:244
register_netdevice+0x7fd/0xe50 net/core/dev.c:7727
ipvlan_link_new+0x499/0xfa0 drivers/net/ipvlan/ipvlan_main.c:626
rtnl_newlink+0xf7c/0x1830 net/core/rtnetlink.c:2730
rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4322
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2455
netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322
netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
The buggy address belongs to the object at ffff888055c66d00
which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 2248 bytes inside of
4096-byte region [ffff888055c66d00, ffff888055c67d00)
The buggy address belongs to the page:
page:ffffea0001571980 count:1 mapcount:0 mapping:ffff888055c66d00 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffff888055c66d00 0000000000000000 0000000100000001
raw: ffffea0001571b20 ffffea00015714a0 ffff88813fe74dc0 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888055c67480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888055c67500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888055c67580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888055c67600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888055c67680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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