UDF: Fix a null pointer dereference in udf_sb_free_partitions
This patch fixes a regression caused by commit bff943af6f
"udf: Fix memory
leak when mounting" due to which it was triggering a kernel null point
dereference in case of interrupted mount OR when allocating memory to
sbi->s_partmaps failed in function udf_sb_alloc_partition_maps.
Reported-and-tested-by: James Hogan <james@albanarts.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
parent
7e2fb2d7e6
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1b1baff6e5
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@ -307,7 +307,8 @@ static void udf_sb_free_partitions(struct super_block *sb)
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{
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{
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struct udf_sb_info *sbi = UDF_SB(sb);
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struct udf_sb_info *sbi = UDF_SB(sb);
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int i;
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int i;
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if (sbi->s_partmaps == NULL)
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return;
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for (i = 0; i < sbi->s_partitions; i++)
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for (i = 0; i < sbi->s_partitions; i++)
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udf_free_partition(&sbi->s_partmaps[i]);
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udf_free_partition(&sbi->s_partmaps[i]);
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kfree(sbi->s_partmaps);
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kfree(sbi->s_partmaps);
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