Commit 902c6a96 authored by Jesper Juhl's avatar Jesper Juhl Committed by Alasdair G Kergon

dm ioctl: do not leak argv if target message only contains whitespace

If 'argc' is zero we jump to the 'out:' label, but this leaks the
(unused) memory that 'dm_split_args()' allocated for 'argv' if the
string being split consisted entirely of whitespace.  Jump to the
'out_argv:' label instead to free up that memory.
Signed-off-by: default avatarJesper Juhl <jj@chaosbits.net>
Cc: stable@kernel.org
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent 192cfd58
...@@ -1437,7 +1437,7 @@ static int target_message(struct dm_ioctl *param, size_t param_size) ...@@ -1437,7 +1437,7 @@ static int target_message(struct dm_ioctl *param, size_t param_size)
if (!argc) { if (!argc) {
DMWARN("Empty message received."); DMWARN("Empty message received.");
goto out; goto out_argv;
} }
table = dm_get_live_table(md); table = dm_get_live_table(md);
......
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