kernel_optimize_test/fs/nilfs2
Ryusuke Konishi d8fd150fe3 nilfs2: fix sanity check of btree level in nilfs_btree_root_broken()
The range check for b-tree level parameter in nilfs_btree_root_broken()
is wrong; it accepts the case of "level == NILFS_BTREE_LEVEL_MAX" even
though the level is limited to values in the range of 0 to
(NILFS_BTREE_LEVEL_MAX - 1).

Since the level parameter is read from storage device and used to index
nilfs_btree_path array whose element count is NILFS_BTREE_LEVEL_MAX, it
can cause memory overrun during btree operations if the boundary value
is set to the level parameter on device.

This fixes the broken sanity check and adds a comment to clarify that
the upper bound NILFS_BTREE_LEVEL_MAX is exclusive.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-05 17:10:11 -07:00
..
alloc.c nilfs2: unify type of key arguments in bmap interface 2015-04-17 09:04:03 -04:00
alloc.h
bmap.c nilfs2: add bmap function to seek a valid key 2015-04-17 09:04:03 -04:00
bmap.h nilfs2: add bmap function to seek a valid key 2015-04-17 09:04:03 -04:00
btnode.c
btnode.h
btree.c nilfs2: fix sanity check of btree level in nilfs_btree_root_broken() 2015-05-05 17:10:11 -07:00
btree.h
cpfile.c nilfs2: improve execution time of NILFS_IOCTL_GET_CPINFO ioctl 2015-04-17 09:04:04 -04:00
cpfile.h
dat.c
dat.h
dir.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
direct.c nilfs2: add bmap function to seek a valid key 2015-04-17 09:04:03 -04:00
direct.h
export.h
file.c
gcinode.c
ifile.c
ifile.h
inode.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-26 17:22:07 -07:00
ioctl.c
Kconfig
Makefile
mdt.c nilfs2: add helper to find existent block on metadata file 2015-04-17 09:04:04 -04:00
mdt.h nilfs2: add helper to find existent block on metadata file 2015-04-17 09:04:04 -04:00
namei.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nilfs.h
page.c nilfs2: use set_mask_bits() for operations on buffer state bitmap 2015-04-17 09:04:03 -04:00
page.h
recovery.c
segbuf.c
segbuf.h
segment.c nilfs2: use set_mask_bits() for operations on buffer state bitmap 2015-04-17 09:04:03 -04:00
segment.h
sufile.c
sufile.h
super.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-26 17:22:07 -07:00
sysfs.c
sysfs.h
the_nilfs.c
the_nilfs.h