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

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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: Jesper Juhl <jj@chaosbits.net>
Cc: stable@kernel.org
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Jesper Juhl 2012-03-07 19:09:34 +00:00 committed by Alasdair G Kergon
parent 192cfd5877
commit 902c6a96a7
1 changed files with 1 additions and 1 deletions
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2
drivers/md/dm-ioctl.c
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@ -1437,7 +1437,7 @@ static int target_message(struct dm_ioctl *param, size_t param_size)
if (!argc) {
DMWARN("Empty message received.");
goto out;
goto out_argv;
}
table = dm_get_live_table(md);