On 5/26/26 07:50, Helge Deller wrote:
From: Helge Deller <[email protected]>
Static built ARM binaries for Cortex-m55 may have been linked to have
their load address at address 0 (because they are effectively a
bare-metal image). When qemu-user is running as non-root user and will
try to mmap() a host address at 0 (which is smaller than mmap_min_addr
according to /proc/sys/vm/mmap_min_addr), it will fail with EPERM and as
such loading those guest program will fail.
Fix pgb_addr_set() to always return false if the guest_loaddr <
mmap_min_addr, that way a valdid guest_base address will be calculated
and the EPERM can be avoided.
Signed-off-by: Helge Deller <[email protected]>
Suggested-by: Peter Maydell <[email protected]>
Resolves: https://gitlab.com/qemu-project/qemu/-/work_items/1890
---
linux-user/elfload.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 0e757787d2..77e0526996 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -866,7 +866,7 @@ static bool pgb_addr_set(PGBAddrs *ga, abi_ulong
guest_loaddr,
if (LO_COMMPAGE != -1 && LO_COMMPAGE < mmap_min_addr) {
return false;
}
- if (guest_loaddr != 0 && guest_loaddr < mmap_min_addr) {
+ if (guest_loaddr < mmap_min_addr) {
return false;
}
}
Nack for ET_DYN aka PIE binaries.
r~
