iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

s390/protvirt: support ultravisor without secure storage limit

Browse Source 
Avoid potential crash due to lack of secure storage limit. Check that
max_sec_stor_addr is not 0 before adjusting vmalloc position.

Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Vasily Gorbik 2020-09-11 11:40:21 +02:00
parent 1d6671ae46
commit c2314cb2dd
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/s390/kernel/uv.c
View File

@ -90,7 +90,8 @@ fail:
void adjust_to_uv_max(unsigned long *vmax)
{
*vmax = min_t(unsigned long, *vmax, uv_info.max_sec_stor_addr);
if (uv_info.max_sec_stor_addr)
*vmax = min_t(unsigned long, *vmax, uv_info.max_sec_stor_addr);
}
/*