On one of my machines UML failed to start after enabling
SELinux.
UML failed to start because SELinux's execmod rule denies
executable pages on a modified file mapping.
Historically UML marks it's stack rwx.
AFAICT, these days this is no longer needed, so let's remove
PROT_EXEC.
Signed-off-by: Richard Weinberger <rich...@nod.at>
---
arch/um/os-Linux/util.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/um/os-Linux/util.c b/arch/um/os-Linux/util.c
index 4193e04d7e4a7..e3ad71a0d13c4 100644
--- a/arch/um/os-Linux/util.c
+++ b/arch/um/os-Linux/util.c
@@ -20,8 +20,7 @@
void stack_protections(unsigned long address)
{
- if (mprotect((void *) address, UM_THREAD_SIZE,
- PROT_READ | PROT_WRITE | PROT_EXEC) < 0)
+ if (mprotect((void *) address, UM_THREAD_SIZE, PROT_READ | PROT_WRITE)
< 0)
panic("protecting stack failed, errno = %d", errno);
}
--
2.49.0
