The patch titled
ext3: dirindex error pointer issues
has been removed from the -mm tree. Its filename was
ext3-dirindex-error-pointer-issues.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: ext3: dirindex error pointer issues
From: Dmitriy Monakhov <dmonakhov@xxxxx>
- ext3_dx_find_entry() exit with out setting proper error pointer
- do_split() exit with out setting proper error pointer
it is realy painful because many callers contain folowing code:
de = do_split(handle,dir, &bh, frame, &hinfo, &retval);
if (!(de))
return retval;
<<< WOW retval wasn't changed by do_split(), so caller failed
<<< but return SUCCESS :)
- Rearrange do_split() error path. Current error path is realy ugly, all
this up and down jump stuff doesn't make code easy to understand.
[dmonakhov@xxxxx: fix annoying fake error messages]
Signed-off-by: Monakhov Dmitriy <dmonakhov@xxxxxxxxxx>
Cc: Andreas Dilger <adilger@xxxxxxxxxxxxx>
Cc: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Monakhov Dmitriy <dmonakhov@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ext3/namei.c | 26 +++++++++++++++-----------
fs/ext4/namei.c | 26 +++++++++++++++-----------
2 files changed, 30 insertions(+), 22 deletions(-)
diff -puN fs/ext3/namei.c~ext3-dirindex-error-pointer-issues fs/ext3/namei.c
--- a/fs/ext3/namei.c~ext3-dirindex-error-pointer-issues
+++ a/fs/ext3/namei.c
@@ -969,6 +969,7 @@ static struct buffer_head * ext3_dx_find
(block<<EXT3_BLOCK_SIZE_BITS(sb))
+((char *)de - bh->b_data))) {
brelse (bh);
+ *err = ERR_BAD_DX_DIR;
goto errout;
}
*res_dir = de;
@@ -1134,9 +1135,9 @@ static struct ext3_dir_entry_2 *do_split
char *data1 = (*bh)->b_data, *data2;
unsigned split;
struct ext3_dir_entry_2 *de = NULL, *de2;
- int err;
+ int err = 0;
- bh2 = ext3_append (handle, dir, &newblock, error);
+ bh2 = ext3_append (handle, dir, &newblock, &err);
if (!(bh2)) {
brelse(*bh);
*bh = NULL;
@@ -1145,14 +1146,9 @@ static struct ext3_dir_entry_2 *do_split
BUFFER_TRACE(*bh, "get_write_access");
err = ext3_journal_get_write_access(handle, *bh);
- if (err) {
- journal_error:
- brelse(*bh);
- brelse(bh2);
- *bh = NULL;
- ext3_std_error(dir->i_sb, err);
- goto errout;
- }
+ if (err)
+ goto journal_error;
+
BUFFER_TRACE(frame->bh, "get_write_access");
err = ext3_journal_get_write_access(handle, frame->bh);
if (err)
@@ -1195,8 +1191,16 @@ static struct ext3_dir_entry_2 *do_split
goto journal_error;
brelse (bh2);
dxtrace(dx_show_index ("frame", frame->entries));
-errout:
return de;
+
+journal_error:
+ brelse(*bh);
+ brelse(bh2);
+ *bh = NULL;
+ ext3_std_error(dir->i_sb, err);
+errout:
+ *error = err;
+ return NULL;
}
#endif
diff -puN fs/ext4/namei.c~ext3-dirindex-error-pointer-issues fs/ext4/namei.c
--- a/fs/ext4/namei.c~ext3-dirindex-error-pointer-issues
+++ a/fs/ext4/namei.c
@@ -967,6 +967,7 @@ static struct buffer_head * ext4_dx_find
(block<<EXT4_BLOCK_SIZE_BITS(sb))
+((char *)de - bh->b_data))) {
brelse (bh);
+ *err = ERR_BAD_DX_DIR;
goto errout;
}
*res_dir = de;
@@ -1132,9 +1133,9 @@ static struct ext4_dir_entry_2 *do_split
char *data1 = (*bh)->b_data, *data2;
unsigned split;
struct ext4_dir_entry_2 *de = NULL, *de2;
- int err;
+ int err = 0;
- bh2 = ext4_append (handle, dir, &newblock, error);
+ bh2 = ext4_append (handle, dir, &newblock, &err);
if (!(bh2)) {
brelse(*bh);
*bh = NULL;
@@ -1143,14 +1144,9 @@ static struct ext4_dir_entry_2 *do_split
BUFFER_TRACE(*bh, "get_write_access");
err = ext4_journal_get_write_access(handle, *bh);
- if (err) {
- journal_error:
- brelse(*bh);
- brelse(bh2);
- *bh = NULL;
- ext4_std_error(dir->i_sb, err);
- goto errout;
- }
+ if (err)
+ goto journal_error;
+
BUFFER_TRACE(frame->bh, "get_write_access");
err = ext4_journal_get_write_access(handle, frame->bh);
if (err)
@@ -1193,8 +1189,16 @@ static struct ext4_dir_entry_2 *do_split
goto journal_error;
brelse (bh2);
dxtrace(dx_show_index ("frame", frame->entries));
-errout:
return de;
+
+journal_error:
+ brelse(*bh);
+ brelse(bh2);
+ *bh = NULL;
+ ext4_std_error(dir->i_sb, err);
+errout:
+ *error = err;
+ return NULL;
}
#endif
_
Patches currently in -mm which might be from dmonakhov@xxxxx are
origin.patch
-
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