From cdcf2d3f4c69ffa8a29b70120ee4fca6e390123b Mon Sep 17 00:00:00 2001
From: Matias Ezequiel Vara Larsen <matiasevara@gmail.com>
Date: Mon, 24 Oct 2022 11:35:29 +0200
Subject: [PATCH 27/28] Fix segmentation fault in
page_flags_init_from_pageflag_names()
When read_string() fails in page_flags_init_from_pageflag_names(),
error() dereferences the name variable to print the string that the
variable points to. However, name points to a string that is not in
crash's memory-space thus triggering a segmentation fault.
This patch replaces "%s" in the error message with "%lx" so the address
is printed instead. Also replaces "%ld" for mask with "%lx".
[ kh: changed the conversion specifiers and commit message ]
Signed-off-by: Matias Ezequiel Vara Larsen <matias.vara@vates.fr>
Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
---
memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/memory.c b/memory.c
index ff6b571361eb..ddbf458277f0 100644
--- a/memory.c
+++ b/memory.c
@@ -6599,7 +6599,7 @@ page_flags_init_from_pageflag_names(void)
}
if (!read_string((ulong)name, namebuf, BUFSIZE-1)) {
- error(INFO, "failed to read pageflag_names entry (i: %d name: \"%s\" mask: %ld)\n",
+ error(INFO, "failed to read pageflag_names entry (i: %d name: %lx mask: %lx)\n",
i, name, mask);
goto pageflags_fail;
}
--
2.37.1