diff options
| author | Ivan Stepchenko <sid@itb.spb.ru> | 2025-11-21 14:54:46 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2025-11-29 13:50:19 +0100 |
| commit | c909fec69f84b39e63876c69b9df2c178c6b76ba (patch) | |
| tree | 7e1f4820d71bf345988b3c64194f36ea314d406f /tools/lib/python/kdoc/kdoc_re.py | |
| parent | 1cce5a5ecafeb8a79aa9165cf134c97da7bbc7db (diff) | |
mtd: lpddr_cmds: fix signed shifts in lpddr_cmds
There are several places where a value of type 'int' is shifted by
lpddr->chipshift. lpddr->chipshift is derived from QINFO geometry and
might reach 31 when QINFO reports a 2 GiB size - the maximum supported by
LPDDR(1) compliant chips. This may cause unexpected sign-extensions when
casting the integer value to the type of 'unsigned long'.
Use '1UL << lpddr->chipshift' and cast 'j' to unsigned long before
shifting so the computation is performed at the destination width.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: c68264711ca6 ("[MTD] LPDDR Command set driver")
Signed-off-by: Ivan Stepchenko <sid@itb.spb.ru>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Diffstat (limited to 'tools/lib/python/kdoc/kdoc_re.py')
0 files changed, 0 insertions, 0 deletions