Commit 1b1baff6 authored Jan 14, 2013 by Namjae Jeon Committed by Jan Kara Jan 14, 2013

UDF: Fix a null pointer dereference in udf_sb_free_partitions



This patch fixes a regression caused by commit bff943af "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>

parent 7e2fb2d7

fs/udf/super.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -307,7 +307,8 @@ static void udf_sb_free_partitions(struct super_block *sb)
		{
		struct udf_sb_info *sbi = UDF_SB(sb);
		int i;

		if (sbi->s_partmaps == NULL)
		return;
		for (i = 0; i < sbi->s_partitions; i++)
		udf_free_partition(&sbi->s_partmaps[i]);
		kfree(sbi->s_partmaps);

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