ext4: fix possible memory leak in ext4_remount()
'orig_data' is malloced in ext4_remount() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Lukas Czerner <lczerner@redhat.com> Cc: stable@vger.kernel.org
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@ -4543,6 +4543,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
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if (!old_opts.s_qf_names[i]) {
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if (!old_opts.s_qf_names[i]) {
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for (j = 0; j < i; j++)
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for (j = 0; j < i; j++)
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kfree(old_opts.s_qf_names[j]);
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kfree(old_opts.s_qf_names[j]);
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kfree(orig_data);
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return -ENOMEM;
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return -ENOMEM;
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}
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}
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} else
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} else
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