shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-08 11:50:43 +09:00
Code Issues Packages Projects Releases Wiki Activity

mtd: nandsim: bugfix: fail if overridesize is too big

Browse Source 
commit bb0a13a134 upstream.

If override size is too big, the module was actually loaded instead of
failing, because retval was not set.

This lead to memory corruption with the use of the freed structs nandsim
and nand_chip.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Richard Genoud
2012-09-12 14:26:26 +02:00
committed by Greg Kroah-Hartman
parent b4f7f36c74
commit 776a41b87e
1 changed files with 1 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/mtd/nand/nandsim.c
View File

@@ -2355,6 +2355,7 @@ static int __init ns_init_module(void)
uint64_t new_size = (uint64_t)nsmtd->erasesize << overridesize;
if (new_size >> overridesize != nsmtd->erasesize) {
NS_ERR("overridesize is too big\n");
retval = -EINVAL;
goto err_exit;
}
/* N.B. This relies on nand_scan not doing anything with the size before we change it */