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Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

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Pull UDF fixes and quota cleanups from Jan Kara:
 "Several UDF fixes and some minor quota cleanups"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Check output buffer length when converting name to CS0
  udf: Prevent buffer overrun with multi-byte characters
  quota: constify qtree_fmt_operations structures
  udf: avoid uninitialized variable use
  udf: Fix lost indirect extent block
  udf: Factor out code for creating indirect extent
  udf: limit the maximum number of indirect extents in a row
  udf: limit the maximum number of TD redirections
  fs: make quota/dquot.c explicitly non-modular
  fs: make quota/netlink.c explicitly non-modular
This commit is contained in:
Linus Torvalds
2016-01-15 11:51:51 -08:00
parent 875fc4f5dd bb00c898ad
commit 1d3671df72
11 changed files with 196 additions and 201 deletions
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14
fs/udf/super.c
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@@ -1586,6 +1586,13 @@ static void udf_load_logicalvolint(struct super_block *sb, struct kernel_extent_
brelse(bh);
}
/*
* Maximum number of Terminating Descriptor redirections. The chosen number is
* arbitrary - just that we hopefully don't limit any real use of rewritten
* inode on write-once media but avoid looping for too long on corrupted media.
*/
#define UDF_MAX_TD_NESTING 64
/*
* Process a main/reserve volume descriptor sequence.
* @block First block of first extent of the sequence.
@@ -1610,6 +1617,7 @@ static noinline int udf_process_sequence(
uint16_t ident;
long next_s = 0, next_e = 0;
int ret;
unsigned int indirections = 0;
memset(vds, 0, sizeof(struct udf_vds_record) * VDS_POS_LENGTH);
@@ -1680,6 +1688,12 @@ static noinline int udf_process_sequence(
}
break;
case TAG_IDENT_TD: /* ISO 13346 3/10.9 */
if (++indirections > UDF_MAX_TD_NESTING) {
udf_err(sb, "too many TDs (max %u supported)\n", UDF_MAX_TD_NESTING);
brelse(bh);
return -EIO;
}
vds[VDS_POS_TERMINATING_DESC].block = block;
if (next_e) {
block = next_s;