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BUG: KASAN: use-after-free in dev_put include/linux/netdevice.h:3982 [inline]
BUG: KASAN: use-after-free in netdevice_event_work_handler+0x15b/0x1b0 drivers/infiniband/core/roce_gid_mgmt.c:630
Read of size 8 at addr ffff888143cf6568 by task kworker/u4:6/9913
CPU: 0 PID: 9913 Comm: kworker/u4:6 Not tainted 5.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: gid-cache-wq netdevice_event_work_handler
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x107/0x163 lib/dump_stack.c:120
print_address_description.constprop.0.cold+0xae/0x4c8 mm/kasan/report.c:385
__kasan_report mm/kasan/report.c:545 [inline]
kasan_report.cold+0x1f/0x37 mm/kasan/report.c:562
dev_put include/linux/netdevice.h:3982 [inline]
netdevice_event_work_handler+0x15b/0x1b0 drivers/infiniband/core/roce_gid_mgmt.c:630
process_one_work+0x933/0x15a0 kernel/workqueue.c:2275
worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
kthread+0x3b1/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Allocated by task 18822:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track mm/kasan/common.c:56 [inline]
__kasan_kmalloc.constprop.0+0xc2/0xd0 mm/kasan/common.c:461
kmalloc_node include/linux/slab.h:575 [inline]
kvmalloc_node+0x61/0xf0 mm/util.c:575
kvmalloc include/linux/mm.h:773 [inline]
kvzalloc include/linux/mm.h:781 [inline]
alloc_netdev_mqs+0x97/0xe70 net/core/dev.c:10522
rtnl_create_link+0x219/0xad0 net/core/rtnetlink.c:3171
veth_newlink+0x20b/0xa00 drivers/net/veth.c:1347
__rtnl_newlink+0x108b/0x1750 net/core/rtnetlink.c:3443
rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3502
rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5564
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:672
____sys_sendmsg+0x6e8/0x810 net/socket.c:2336
___sys_sendmsg+0xf3/0x170 net/socket.c:2390
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2423
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Freed by task 18822:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track+0x1c/0x30 mm/kasan/common.c:56
kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:352
__kasan_slab_free+0x102/0x140 mm/kasan/common.c:422
slab_free_hook mm/slub.c:1544 [inline]
slab_free_freelist_hook+0x5d/0x150 mm/slub.c:1577
slab_free mm/slub.c:3140 [inline]
kfree+0xdb/0x360 mm/slub.c:4122
kvfree+0x42/0x50 mm/util.c:604
device_release+0x9f/0x240 drivers/base/core.c:1962
kobject_cleanup lib/kobject.c:705 [inline]
kobject_release lib/kobject.c:736 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1c8/0x540 lib/kobject.c:753
put_device+0x1b/0x30 drivers/base/core.c:3190
free_netdev+0x3a2/0x4c0 net/core/dev.c:10642
veth_newlink+0x6f3/0xa00 drivers/net/veth.c:1415
__rtnl_newlink+0x108b/0x1750 net/core/rtnetlink.c:3443
rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3502
rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5564
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:672
____sys_sendmsg+0x6e8/0x810 net/socket.c:2336
___sys_sendmsg+0xf3/0x170 net/socket.c:2390
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2423
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
The buggy address belongs to the object at ffff888143cf6000
which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 1384 bytes inside of
4096-byte region [ffff888143cf6000, ffff888143cf7000)
The buggy address belongs to the page:
page:000000001bd3da5e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x143cf0
head:000000001bd3da5e order:3 compound_mapcount:0 compound_pincount:0
flags: 0x57ff00000010200(slab|head)
raw: 057ff00000010200 dead000000000100 dead000000000122 ffff888010042140
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888143cf6400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888143cf6480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888143cf6500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888143cf6580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888143cf6600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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