Julia Lawall fd2696f399 Btrfs: introduce missing kfree ...

Error handling code following a kzalloc should free the allocated data.

The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,f1,l;
position p1,p2;
expression *ptr != NULL;
@@

x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
     when != if (...) { <+...x...+> }
(
x->f1 = E
|
 (x->f1 == NULL || ...)
|
 f(...,x->f1,...)
)
...>
(
 return \(0\|<+...x...+>\|ptr\);
|
 return@p2 ...;
)

@script:python@
p1 << r.p1;
p2 << r.p2;
@@

print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

2009-09-29 13:51:04 -04:00

..

acl.c

helpers for acl caching + switch to those

2009-06-24 08:17:07 -04:00

async-thread.c

Btrfs: Fix async thread shutdown race

2009-09-15 20:20:17 -04:00

async-thread.h

Btrfs: keep irqs on more often in the worker threads

2009-09-11 13:31:04 -04:00

btrfs_inode.h

Btrfs: proper -ENOSPC handling

2009-09-28 16:29:42 -04:00

compat.h

Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code

2009-01-06 09:38:55 -05:00

compression.c

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

2009-09-11 19:07:25 -04:00

compression.h

Btrfs: Add zlib compression support

2008-10-29 14:49:59 -04:00

ctree.c

Btrfs: check size of inode backref before adding hardlink

2009-09-24 09:17:31 -04:00

ctree.h

Btrfs: proper -ENOSPC handling

2009-09-28 16:29:42 -04:00

delayed-ref.c

Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)

2009-06-10 11:29:46 -04:00

delayed-ref.h

Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)

2009-06-10 11:29:46 -04:00

dir-item.c

Btrfs: change how subvolumes are organized

2009-09-21 15:56:00 -04:00

disk-io.c

Btrfs: proper -ENOSPC handling

2009-09-28 16:29:42 -04:00

disk-io.h

Btrfs: leave btree locks spinning more often

2009-03-24 16:14:28 -04:00

export.c

Btrfs: add snapshot/subvolume destroy ioctl

2009-09-21 16:00:26 -04:00

export.h

NFS support for btrfs - v3

2008-09-25 11:04:06 -04:00

extent_io.c

Btrfs: proper -ENOSPC handling

2009-09-28 16:29:42 -04:00

extent_io.h

Btrfs: proper -ENOSPC handling

2009-09-28 16:29:42 -04:00

extent_map.c

Btrfs: search for an allocation hint while filling file COW

2009-09-18 16:08:52 -04:00

extent_map.h

Btrfs: search for an allocation hint while filling file COW

2009-09-18 16:08:52 -04:00

extent-tree.c

Btrfs: proper -ENOSPC handling

2009-09-28 16:29:42 -04:00

file-item.c

Btrfs: leave btree locks spinning more often

2009-03-24 16:14:28 -04:00

file.c

Btrfs: proper -ENOSPC handling

2009-09-28 16:29:42 -04:00

free-space-cache.c

Btrfs: fix extent entry threshold calculation

2009-09-21 19:23:50 -04:00

free-space-cache.h

Btrfs: use hybrid extents+bitmap rb tree for free space

2009-07-24 09:23:30 -04:00

hash.h

Btrfs: remove crc32c.h and use libcrc32c directly.

2009-06-10 11:29:53 -04:00

inode-item.c

Btrfs: check size of inode backref before adding hardlink

2009-09-24 09:17:31 -04:00

inode-map.c

Btrfs: do not reuse objectid of deleted snapshot/subvol

2009-09-21 15:56:00 -04:00

inode.c

Btrfs: proper -ENOSPC handling

2009-09-28 16:29:42 -04:00

ioctl.c

Btrfs: proper -ENOSPC handling

2009-09-28 16:29:42 -04:00

ioctl.h

Btrfs: add snapshot/subvolume destroy ioctl

2009-09-21 16:00:26 -04:00

Kconfig

Btrfs: make btrfs acls selectable

2009-02-04 09:28:28 -05:00

locking.c

Btrfs: fix typos in comments

2009-04-02 16:46:06 -04:00

locking.h

Btrfs: fix spinlock assertions on UP systems

2009-03-09 11:45:38 -04:00

Makefile

Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)

2009-06-10 11:29:46 -04:00

ordered-data.c

Btrfs: Use PagePrivate2 to track pages in the data=ordered code.

2009-09-11 13:31:07 -04:00

ordered-data.h

Btrfs: Use PagePrivate2 to track pages in the data=ordered code.

2009-09-11 13:31:07 -04:00

orphan.c

Btrfs: change how subvolumes are organized

2009-09-21 15:56:00 -04:00

print-tree.c

Btrfs: remove of redundant btrfs_header_level

2009-07-22 16:52:13 -04:00

print-tree.h

Btrfs: Create extent_buffer interface for large blocksizes

2008-09-25 11:03:56 -04:00

ref-cache.c

Btrfs: Make btrfs_drop_snapshot work in larger and more efficient chunks

2009-02-04 09:27:02 -05:00

ref-cache.h

Btrfs: Make btrfs_drop_snapshot work in larger and more efficient chunks

2009-02-04 09:27:02 -05:00

relocation.c

Btrfs: relocate file extents in clusters

2009-09-24 09:17:31 -04:00

root-tree.c

Btrfs: add snapshot/subvolume destroy ioctl

2009-09-21 16:00:26 -04:00

struct-funcs.c

Btrfs: Fix checkpatch.pl warnings

2009-01-05 21:25:51 -05:00

super.c

Btrfs: Fix setting umask when POSIX ACLs are not enabled

2009-09-29 13:51:04 -04:00

sysfs.c

Btrfs: Fix checkpatch.pl warnings

2009-01-05 21:25:51 -05:00

transaction.c

Btrfs: proper -ENOSPC handling

2009-09-28 16:29:42 -04:00

transaction.h

Btrfs: be more polite in the async caching threads

2009-07-30 10:14:46 -04:00

tree-defrag.c

Btrfs: do extent allocation and reference count updates in the background

2009-03-24 16:14:25 -04:00

tree-log.c

Btrfs: add snapshot/subvolume destroy ioctl

2009-09-21 16:00:26 -04:00

tree-log.h

Btrfs: tree logging unlink/rename fixes

2009-03-24 16:14:52 -04:00

version.h

Update Btrfs files for in-kernel usage

2008-09-25 15:41:59 -04:00

version.sh

Btrfs: Fixes for 2.6.28-rc API changes

2008-11-19 21:17:22 -05:00

volumes.c

Btrfs: introduce missing kfree

2009-09-29 13:51:04 -04:00

volumes.h

Btrfs: make balance code choose more wisely when relocating

2009-09-21 19:23:48 -04:00

xattr.c

Btrfs: selinux support

2009-02-04 09:29:13 -05:00

xattr.h

Btrfs: selinux support

2009-02-04 09:29:13 -05:00

zlib.c

Btrfs: correct error-handling zlib error handling

2009-08-07 13:51:33 -04:00