[PATCH 01/14] linux-user/elfload: Disable core dump if getrlimit fails

Richard Henderson posted 14 patches 9 months ago
Maintainers: Laurent Vivier <laurent@vivier.eu>
[PATCH 01/14] linux-user/elfload: Disable core dump if getrlimit fails
Posted by Richard Henderson 9 months ago
Do not dump core at all if getrlimit fails; this ensures
that dumpsize is valid throughout the function, not just
for the initial test vs rlim_cur.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 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 b8eef893d0..fb47fe39c9 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -4673,7 +4673,7 @@ static int elf_core_dump(int signr, const CPUArchState *env)
         return 0;
     }
 
-    if (getrlimit(RLIMIT_CORE, &dumpsize) == 0 && dumpsize.rlim_cur == 0) {
+    if (getrlimit(RLIMIT_CORE, &dumpsize) < 0 || dumpsize.rlim_cur == 0) {
         return 0;
     }
 
-- 
2.34.1
Re: [PATCH 01/14] linux-user/elfload: Disable core dump if getrlimit fails
Posted by Alex Bennée 9 months ago
Richard Henderson <richard.henderson@linaro.org> writes:

> Do not dump core at all if getrlimit fails; this ensures
> that dumpsize is valid throughout the function, not just
> for the initial test vs rlim_cur.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

-- 
Alex Bennée
Virtualisation Tech Lead @ Linaro