Vinit Agnihotri d08c3b78b8 UBI: fix overflow bug ...

I was experiencing overflows in multiplications for
volume->used_bytes in vmt.c & vtbl.c, while creating & resizing large volumes.

vol->used_bytes is long long however its 2 operands vol->used_ebs &
vol->usable_leb_size
are int. So their multiplication for larger values causes integer overflows.
Typecasting them solves the problem.

My machine & flash details:

64Bit dual-core AMD opteron, 1 GB RAM, linux 2.6.18.3.
mtd size = 6GB, volume size= 5GB, peb_size = 4MB.

heres patch which does the fix.

Signed-off-by: Vinit Agnihotri <vinit.agnihotri@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

2007-07-18 16:58:12 +03:00

..

build.c

UBI: fix message

2007-07-18 16:56:13 +03:00

cdev.c

UBI: cleanup ioctl handling

2007-07-18 16:53:36 +03:00

debug.c

UBI: bugfix in error path

2007-07-18 16:55:55 +03:00

debug.h

UBI: bugfix in error path

2007-07-18 16:55:55 +03:00

eba.c

UBI: fix bug in atomic_leb_change()

2007-07-18 16:56:24 +03:00

gluebi.c

UBI: set correct gluebi device size

2007-07-18 16:52:51 +03:00

io.c

UBI: fix signed-unsigned multiplication

2007-07-18 16:57:34 +03:00

kapi.c

UBI: do not let to read too much

2007-07-18 16:52:42 +03:00

Kconfig

UBI: Unsorted Block Images

2007-04-27 14:23:33 +03:00

Kconfig.debug

UBI: Unsorted Block Images

2007-04-27 14:23:33 +03:00

Makefile

UBI: Unsorted Block Images

2007-04-27 14:23:33 +03:00

misc.c

UBI: use vmalloc for large buffers

2007-07-18 16:53:08 +03:00

scan.c

UBI: bugfix in max_sqnum calculation

2007-07-18 16:58:02 +03:00

scan.h

UBI: fix error path in create_vtbl()

2007-07-18 16:52:32 +03:00

ubi.h

UBI: use vmalloc for large buffers

2007-07-18 16:53:08 +03:00

upd.c

UBI: use vmalloc for large buffers

2007-07-18 16:53:08 +03:00

vmt.c

UBI: fix overflow bug

2007-07-18 16:58:12 +03:00

vtbl.c

UBI: fix overflow bug

2007-07-18 16:58:12 +03:00

wl.c

UBI: kill homegrown endian macros

2007-07-18 16:53:49 +03:00