[PATCH] alpha: Fix generic brk system call emulation in __brk_call (bug 29490)
Florian Weimer
fweimer@redhat.com
Wed Aug 17 06:30:53 GMT 2022
The kernel special-cases the zero argument for alpha brk, and we can
use that to restore the generic Linux error handling behavior.
This change fixes an ldconfig crash under qemu-user for me.
---
sysdeps/unix/sysv/linux/alpha/brk_call.h | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/sysdeps/unix/sysv/linux/alpha/brk_call.h b/sysdeps/unix/sysv/linux/alpha/brk_call.h
index b8088cf13f..0b851b6c86 100644
--- a/sysdeps/unix/sysv/linux/alpha/brk_call.h
+++ b/sysdeps/unix/sysv/linux/alpha/brk_call.h
@@ -21,8 +21,7 @@ __brk_call (void *addr)
{
unsigned long int result = INTERNAL_SYSCALL_CALL (brk, addr);
if (result == -ENOMEM)
- /* Mimic the default error reporting behavior. */
- return addr;
- else
- return (void *) result;
+ /* Mimic the generic error reporting behavior. */
+ result = INTERNAL_SYSCALL_CALL (brk, 0);
+ return (void *) result;
}
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