isofs: fix potential memory leak in mount option parsing
[ Upstream commit 4f34a5130a
]
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: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
parent
d27cd5cb9b
commit
ba041775a9
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@ -394,7 +394,10 @@ static int parse_options(char *options, struct iso9660_options *popt)
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break;
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#ifdef CONFIG_JOLIET
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case Opt_iocharset:
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kfree(popt->iocharset);
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popt->iocharset = match_strdup(&args[0]);
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if (!popt->iocharset)
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return 0;
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break;
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#endif
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case Opt_map_a:
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