An assumption that zero value of OS_INFO pointer is not valid
leads to a failure of --mem-usage argument against /proc/kcore:
s390x_init_vm: Can't get s390x os_info ptr.
Reported-by: Philipp Rudo <prudo@xxxxxxxxxx>
Fixes: 9d58c2630c71 ("s390x: uncouple virtual and physical address spaces")
Signed-off-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
---
arch/s390x.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/s390x.c b/arch/s390x.c
index 4a993be..f9a055d 100644
--- a/arch/s390x.c
+++ b/arch/s390x.c
@@ -156,8 +156,7 @@ static int s390x_init_vm(void)
struct os_info os_info;
ulong addr;
- if (!readmem(PADDR, S390X_LC_OS_INFO, &addr,
- sizeof(addr)) || !addr) {
+ if (!readmem(PADDR, S390X_LC_OS_INFO, &addr, sizeof(addr))) {
ERRMSG("Can't get s390x os_info ptr.\n");
return FALSE;
}
--
2.43.0
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