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Julia Lawall 34d19bada0 fs/btrfs/inode.c: Add missing IS_ERR test 
After the conditional that precedes the following code, inode may be an
ERR_PTR value.  This can eg result from a memory allocation failure via the
call to btrfs_iget, and thus does not imply that root is different than
sub_root.  Thus, an IS_ERR check is added to ensure that there is no
dereference of inode in this case.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
identifier f;
@@
f(...) { ... return ERR_PTR(...); }

@@
identifier r.f, fld;
expression x;
statement S1,S2;
@@
 x = f(...)
 ... when != IS_ERR(x)
(
 if (IS_ERR(x) ||...) S1 else S2
|
*x->fld
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 		2011-01-28 16:40:37 -05:00
..
Kconfig btrfs: Add lzo compression support 2010-12-22 23:15:47 +08:00
Makefile btrfs: Add lzo compression support 2010-12-22 23:15:47 +08:00
acl.c Merge branch 'bug-fixes' of git://repo.or.cz/linux-btrfs-devel into btrfs-38 2011-01-28 16:24:59 -05:00
async-thread.c Btrfs: don't walk around with task->state != TASK_RUNNING 2010-05-25 10:34:58 -04:00
async-thread.h Btrfs: fix deadlock on async thread startup 2009-10-05 09:44:45 -04:00
btrfs_inode.h btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
compat.h Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code 2009-01-06 09:38:55 -05:00
compression.c btrfs: fix uncheck memory allocation in btrfs_submit_compressed_read 2011-01-28 16:40:36 -05:00
compression.h btrfs: Extract duplicate decompress code 2010-12-22 23:15:50 +08:00
ctree.c btrfs: check NULL or not 2011-01-16 11:30:20 -05:00
ctree.h Btrfs: forced readonly mounts on errors 2011-01-17 15:13:08 -05:00
delayed-ref.c Btrfs: Integrate metadata reservation with start_transaction 2010-05-25 10:34:50 -04:00
delayed-ref.h Btrfs: Integrate metadata reservation with start_transaction 2010-05-25 10:34:50 -04:00
dir-item.c Btrfs: Fix variables set but not read (bugs found by gcc 4.6) 2010-10-29 15:14:31 -04:00
disk-io.c Merge branch 'bug-fixes' of git://repo.or.cz/linux-btrfs-devel into btrfs-38 2011-01-28 16:24:59 -05:00
disk-io.h Btrfs: forced readonly mounts on errors 2011-01-17 15:13:08 -05:00
export.c btrfs: fix several uncheck memory allocations 2011-01-28 16:40:36 -05:00
export.h NFS support for btrfs - v3 2008-09-25 11:04:06 -04:00
extent-tree.c Btrfs: forced readonly mounts on errors 2011-01-17 15:13:08 -05:00
extent_io.c btrfs: fix uncheck memory allocation in btrfs_submit_compressed_read 2011-01-28 16:40:36 -05:00
extent_io.h btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
extent_map.c btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
extent_map.h btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
file-item.c btrfs: fix several uncheck memory allocations 2011-01-28 16:40:36 -05:00
file.c btrfs: fix several uncheck memory allocations 2011-01-28 16:40:36 -05:00
free-space-cache.c btrfs: Check mergeable free space when removing a cluster 2011-01-27 01:04:57 +08:00
free-space-cache.h Btrfs: load free space cache if it exists 2010-10-29 09:26:35 -04:00
hash.h Btrfs: remove crc32c.h and use libcrc32c directly. 2009-06-10 11:29:53 -04:00
inode-item.c Btrfs: Integrate metadata reservation with start_transaction 2010-05-25 10:34:50 -04:00
inode-map.c Btrfs: do not reuse objectid of deleted snapshot/subvol 2009-09-21 15:56:00 -04:00
inode.c fs/btrfs/inode.c: Add missing IS_ERR test 2011-01-28 16:40:37 -05:00
ioctl.c Merge branch 'bug-fixes' of git://repo.or.cz/linux-btrfs-devel into btrfs-38 2011-01-28 16:24:59 -05:00
ioctl.h Merge branch 'lzo-support' of git://repo.or.cz/linux-btrfs-devel into btrfs-38 2011-01-16 11:25:54 -05:00
locking.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
locking.h Btrfs: fix spinlock assertions on UP systems 2009-03-09 11:45:38 -04:00
lzo.c btrfs: Extract duplicate decompress code 2010-12-22 23:15:50 +08:00
ordered-data.c btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
ordered-data.h btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
orphan.c Btrfs: fixup return code for btrfs_del_orphan_item 2010-12-09 13:57:15 -05:00
print-tree.c btrfs: fix missing break in switch phrase 2011-01-28 16:40:37 -05:00
print-tree.h Btrfs: Create extent_buffer interface for large blocksizes 2008-09-25 11:03:56 -04:00
ref-cache.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ref-cache.h Btrfs: use RB_ROOT to intialize rb_trees instead of setting rb_node to NULL 2010-03-08 16:26:50 -05:00
relocation.c Btrfs: Fix variables set but not read (bugs found by gcc 4.6) 2010-10-29 15:14:31 -04:00
root-tree.c Btrfs: cleanup warnings from gcc 4.6 (nonbugs) 2010-10-29 15:14:37 -04:00
struct-funcs.c Btrfs: Fix checkpatch.pl warnings 2009-01-05 21:25:51 -05:00
super.c Merge branch 'bug-fixes' of git://repo.or.cz/linux-btrfs-devel into btrfs-38 2011-01-28 16:24:59 -05:00
sysfs.c Driver core: Constify struct sysfs_ops in struct kobj_type 2010-03-07 17:04:49 -08:00
transaction.c Btrfs: forced readonly mounts on errors 2011-01-17 15:13:08 -05:00
transaction.h Btrfs: Add readonly snapshots support 2010-12-23 08:49:17 +08:00
tree-defrag.c Btrfs: cleanup warnings from gcc 4.6 (nonbugs) 2010-10-29 15:14:37 -04:00
tree-log.c btrfs: fix several uncheck memory allocations 2011-01-28 16:40:36 -05:00
tree-log.h Btrfs: Metadata ENOSPC handling for tree log 2010-05-25 10:34:53 -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: Require CAP_SYS_ADMIN for filesystem rebalance 2011-01-16 11:30:20 -05:00
volumes.h btrfs: fix wrong free space information of btrfs 2011-01-16 11:30:19 -05:00
xattr.c Btrfs: Add readonly snapshots support 2010-12-23 08:49:17 +08:00
xattr.h btrfs: constify xattr_handler 2010-05-21 18:31:18 -04:00
zlib.c btrfs: Extract duplicate decompress code 2010-12-22 23:15:50 +08:00