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Commit 4f34a513 authored by Chengguang Xu's avatar Chengguang Xu Committed by Jan Kara
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isofs: fix potential memory leak in mount option parsing 



When specifying string type mount option (e.g., iocharset)
several times in a mount, current option parsing may
cause memory leak. Hence, call kfree for previous one
in this case. Meanwhile, check memory allocation result
for it.

Signed-off-by: default avatarChengguang Xu <cgxu519@gmx.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 96348e49

fs/isofs/inode.c

+3 −0
Original line number Diff line number Diff line
@@ -394,7 +394,10 @@ static int parse_options(char *options, struct iso9660_options *popt) 
			break;

#ifdef CONFIG_JOLIET

		case Opt_iocharset:

			kfree(popt->iocharset);

			popt->iocharset = match_strdup(&args[0]);

			if (!popt->iocharset)

				return 0;

			break;

#endif

		case Opt_map_a: