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