The patch titled
pie randomization: fix BAD_ADDR macro
has been added to the -mm tree. Its filename is
pie-randomization-fix-bad_addr-macro.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: pie randomization: fix BAD_ADDR macro
From: Jiri Kosina <jkosina@xxxxxxx>
pie-randomization.patch makes the load_addr in load_elf_interp() the load
bias of ld.so (difference between the actual load base address and first
PT_LOAD segment's p_vaddr). If the difference equals (on x86) to
0xfffff000 (which is valid [1]), SIGSEGV is incorrectly sent.
This patch changes the BAD_ADDR so that it catches the mappings to the
error-area properly.
[1] https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=246623
Reported-by: Jakub Jelinek <jakub@xxxxxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Cc: Chuck Ebbert <cebbert@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/binfmt_elf.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN fs/binfmt_elf.c~pie-randomization-fix-bad_addr-macro fs/binfmt_elf.c
--- a/fs/binfmt_elf.c~pie-randomization-fix-bad_addr-macro
+++ a/fs/binfmt_elf.c
@@ -80,7 +80,7 @@ static struct linux_binfmt elf_format =
.hasvdso = 1
};
-#define BAD_ADDR(x) ((unsigned long)(x) >= PAGE_MASK)
+#define BAD_ADDR(x) IS_ERR_VALUE(x)
static int set_brk(unsigned long start, unsigned long end)
{
_
Patches currently in -mm which might be from jkosina@xxxxxxx are
git-hid.patch
irtouchsystems-support-for-usbtouchscreen.patch
git-ipwireless_cs.patch
x86_64-fix-wrong-comment-regarding-set_fixmap.patch
pie-randomization.patch
pie-randomization-fix-bad_addr-macro.patch
kernel-printkc-document-possible-deadlock-against-scheduler.patch
-
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