A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 03:27:44 -04:00
Code Issues Projects Releases Packages Wiki Activity

hfsplus: fix possible deadlock when handling corrupted extents

Browse source 
A corrupted extent for the extent file itself may try to get an impossible
extent, causing a deadlock if I see it correctly.

Check the inode number after the first_blocks checks and fail if it's the
extent file, as according to the spec the extent file should have no
extent for itself.

Signed-off-by: Eric Sesterhenn <[email protected]>
Cc: Roman Zippel <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Eric Sesterhenn 2008-10-18 20:28:02 -07:00 • committed by Linus Torvalds
commit 248736c2a5
1 changed files with 3 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

3
fs/hfsplus/extents.c
View file

@ -199,6 +199,9 @@ int hfsplus_get_block(struct inode *inode, sector_t iblock,
goto done;
}
if (inode->i_ino == HFSPLUS_EXT_CNID)
return -EIO;
mutex_lock(&HFSPLUS_I(inode).extents_lock);
res = hfsplus_ext_read_extent(inode, ablock);
if (!res) {