diff options
| author | Wang Hai <wanghai38@huawei.com> | 2020-06-11 15:57:50 +0800 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2020-06-29 20:07:59 -0400 |
| commit | 7f8a6bbeec89a98e0c4cdcfe97841d5c8c6fc29e (patch) | |
| tree | bbd2ba527b8c56d6496f5b9f032863676dd173da /drivers/usb/host | |
| parent | e1f795de2ddf1e06e470c07aadbf589cac58178e (diff) | |
mld: fix memory leak in ipv6_mc_destroy_dev()
[ Upstream commit ea2fce88d2fd678ed9d45354ff49b73f1d5615dd ]
Commit a84d01647989 ("mld: fix memory leak in mld_del_delrec()") fixed
the memory leak of MLD, but missing the ipv6_mc_destroy_dev() path, in
which mca_sources are leaked after ma_put().
Using ip6_mc_clear_src() to take care of the missing free.
BUG: memory leak
unreferenced object 0xffff8881113d3180 (size 64):
comm "syz-executor071", pid 389, jiffies 4294887985 (age 17.943s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 ff 02 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000002cbc483c>] kmalloc include/linux/slab.h:555 [inline]
[<000000002cbc483c>] kzalloc include/linux/slab.h:669 [inline]
[<000000002cbc483c>] ip6_mc_add1_src net/ipv6/mcast.c:2237 [inline]
[<000000002cbc483c>] ip6_mc_add_src+0x7f5/0xbb0 net/ipv6/mcast.c:2357
[<0000000058b8b1ff>] ip6_mc_source+0xe0c/0x1530 net/ipv6/mcast.c:449
[<000000000bfc4fb5>] do_ipv6_setsockopt.isra.12+0x1b2c/0x3b30 net/ipv6/ipv6_sockglue.c:754
[<00000000e4e7a722>] ipv6_setsockopt+0xda/0x150 net/ipv6/ipv6_sockglue.c:950
[<0000000029260d9a>] rawv6_setsockopt+0x45/0x100 net/ipv6/raw.c:1081
[<000000005c1b46f9>] __sys_setsockopt+0x131/0x210 net/socket.c:2132
[<000000008491f7db>] __do_sys_setsockopt net/socket.c:2148 [inline]
[<000000008491f7db>] __se_sys_setsockopt net/socket.c:2145 [inline]
[<000000008491f7db>] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2145
[<00000000c7bc11c5>] do_syscall_64+0xa1/0x530 arch/x86/entry/common.c:295
[<000000005fb7a3f3>] entry_SYSCALL_64_after_hwframe+0x49/0xb3
Fixes: 1666d49e1d41 ("mld: do not remove mld souce list info when set link down")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Acked-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
0 files changed, 0 insertions, 0 deletions