36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
commit 7bb8045ec0595a031e68383849c3fbd9af134312
|
|
Author: Volker Weißmann <volker.weissmann@gmx.de>
|
|
Date: Tue Oct 3 19:18:44 2023 +0200
|
|
|
|
Fix FORTIFY_SOURCE false positive
|
|
|
|
When -D_FORTIFY_SOURCE=2 was given during compilation,
|
|
sprintf and similar functions will check if their
|
|
first argument is in read-only memory and exit with
|
|
*** %n in writable segment detected ***
|
|
otherwise. To check if the memory is read-only, glibc
|
|
reads frpm the file "/proc/self/maps". If opening this
|
|
file fails due to too many open files (EMFILE), glibc
|
|
will now ignore this error.
|
|
|
|
Fixes [BZ #30932]
|
|
|
|
Signed-off-by: Volker Weißmann <volker.weissmann@gmx.de>
|
|
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
|
|
|
|
diff --git a/sysdeps/unix/sysv/linux/readonly-area.c b/sysdeps/unix/sysv/linux/readonly-area.c
|
|
index fa407d2f05e6b9aa..1f0d2e2749b159c9 100644
|
|
--- a/sysdeps/unix/sysv/linux/readonly-area.c
|
|
+++ b/sysdeps/unix/sysv/linux/readonly-area.c
|
|
@@ -42,7 +42,9 @@ __readonly_area (const char *ptr, size_t size)
|
|
to the /proc filesystem if it is set[ug]id. There has
|
|
been no willingness to change this in the kernel so
|
|
far. */
|
|
- || errno == EACCES)
|
|
+ || errno == EACCES
|
|
+ /* Process has reached the maximum number of open files. */
|
|
+ || errno == EMFILE)
|
|
return 1;
|
|
return -1;
|
|
}
|