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| author | Heiko Schocher <hs@denx.de> | 2016-04-21 12:16:58 +0200 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2016-04-22 11:48:17 +0200 |
| commit | b1d6590d357bde2332cb699e2fd2efc7a7c64f38 (patch) | |
| tree | d89dec92ed7ba1ce5c3ece8fb12f7298d44f927c /arch | |
| parent | 68fc449033732e7eb2aa022f9ef1b292f6871b8c (diff) | |
| download | talos-obmc-uboot-b1d6590d357bde2332cb699e2fd2efc7a7c64f38.tar.gz talos-obmc-uboot-b1d6590d357bde2332cb699e2fd2efc7a7c64f38.zip | |
ubifs: fix memory corruption in super.c
In list "super_blocks" ubifs collects allocated super_block
structs. U-Boot frees on unmount the allocated struct,
so the pointer stored in this list is free after the umount.
On a new ubifs mount, the new allocated super_block struct
get inserted into the super_blocks list ... which contains
now a freed pointer, and the list_add_tail() corrupts the
freed memory ...
2 solutions are possible:
- remove the super_block from the super_blocks list
on umount
- as U-Boot does not use the super_blocks list ...
remove it complete for U-Boot.
Both solutions should not introduce problems for porting
to newer linux version, so this patch removes the unused
super_blocks list, as it saves code size and execution
time.
Signed-off-by: Heiko Schocher <hs@denx.de>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions
