From: "tip-bot2 for Arvind Sankar" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Arvind Sankar <nivedita@alum.mit.edu>,
Ingo Molnar <mingo@kernel.org>, x86 <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: [tip: x86/kaslr] x86/kaslr: Fix off-by-one error in __process_mem_region()
Date: Thu, 06 Aug 2020 23:39:00 -0000 [thread overview]
Message-ID: <159675714094.3192.4263482900685835481.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20200728225722.67457-6-nivedita@alum.mit.edu>
The following commit has been merged into the x86/kaslr branch of tip:
Commit-ID: 8d1cf8595860f4807f4ff1f8f1fc53e7576e0d71
Gitweb: https://git.kernel.org/tip/8d1cf8595860f4807f4ff1f8f1fc53e7576e0d71
Author: Arvind Sankar <nivedita@alum.mit.edu>
AuthorDate: Tue, 28 Jul 2020 18:57:06 -04:00
Committer: Ingo Molnar <mingo@kernel.org>
CommitterDate: Fri, 31 Jul 2020 11:08:17 +02:00
x86/kaslr: Fix off-by-one error in __process_mem_region()
In case of an overlap, the beginning of the region should be used even
if it is exactly image_size, not just strictly larger.
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200728225722.67457-6-nivedita@alum.mit.edu
---
arch/x86/boot/compressed/kaslr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
index da45e66..848346f 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -669,7 +669,7 @@ static void __process_mem_region(struct mem_vector *entry,
}
/* Store beginning of region if holds at least image_size. */
- if (overlap.start > region.start + image_size) {
+ if (overlap.start >= region.start + image_size) {
struct mem_vector beginning;
beginning.start = region.start;
next prev parent reply other threads:[~2020-08-06 23:39 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-27 21:50 [PATCH 0/8] x86/kaslr: Cleanup and small bugfixes Arvind Sankar
2020-07-27 21:50 ` [PATCH 1/8] x86/kaslr: Make command line handling safer Arvind Sankar
2020-07-27 21:50 ` [PATCH 2/8] x86/kaslr: Remove bogus warning and unnecessary goto Arvind Sankar
2020-07-27 21:50 ` [PATCH 3/8] x86/kaslr: Fix process_efi_entries comment Arvind Sankar
2020-07-27 21:50 ` [PATCH 4/8] x86/kaslr: Initialize mem_limit to the real maximum address Arvind Sankar
2020-07-27 21:50 ` [PATCH 5/8] x86/kaslr: Simplify __process_mem_region Arvind Sankar
2020-07-28 10:57 ` Ingo Molnar
2020-07-27 21:50 ` [PATCH 6/8] x86/kaslr: Simplify process_gb_huge_pages Arvind Sankar
2020-07-28 10:58 ` Ingo Molnar
2020-07-27 21:50 ` [PATCH 7/8] x86/kaslr: Clean up slot handling Arvind Sankar
2020-07-28 10:59 ` Ingo Molnar
2020-07-27 21:50 ` [PATCH 8/8] x86/kaslr: Don't use 64-bit mem_vector for 32-bit kernel Arvind Sankar
2020-07-28 11:05 ` Ingo Molnar
2020-07-27 23:07 ` [PATCH v2 0/8] x86/kaslr: Cleanup and small bugfixes Arvind Sankar
2020-07-28 11:06 ` Ingo Molnar
2020-07-28 14:24 ` Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 00/21] " Arvind Sankar
2020-07-30 18:02 ` Arvind Sankar
2020-07-31 9:21 ` Ingo Molnar
2020-07-31 23:33 ` Kees Cook
2020-08-03 1:15 ` [PATCH 0/1] x86/kaslr: Replace strlen with strnlen Arvind Sankar
2020-08-03 1:15 ` [PATCH 1/1] " Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] x86/kaslr: Replace strlen() with strnlen() tip-bot2 for Arvind Sankar
2020-08-14 22:47 ` [PATCH v3 00/21] x86/kaslr: Cleanup and small bugfixes Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 01/21] x86/kaslr: Make command line handling safer Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 02/21] x86/kaslr: Remove bogus warning and unnecessary goto Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 03/21] x86/kaslr: Fix process_efi_entries comment Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 04/21] x86/kaslr: Initialize mem_limit to the real maximum address Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 05/21] x86/kaslr: Fix off-by-one error in __process_mem_region Arvind Sankar
2020-08-06 23:39 ` tip-bot2 for Arvind Sankar [this message]
2020-07-28 22:57 ` [PATCH v3 06/21] x86/kaslr: Drop redundant cur_entry from __process_mem_region Arvind Sankar
2020-08-06 23:39 ` [tip: x86/kaslr] x86/kaslr: Drop redundant cur_entry from __process_mem_region() tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 07/21] x86/kaslr: Eliminate start_orig from __process_mem_region Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] x86/kaslr: Eliminate 'start_orig' local variable from __process_mem_region() tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 08/21] x86/kaslr: Drop redundant variable in __process_mem_region Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] x86/kaslr: Drop redundant variable in __process_mem_region() tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 09/21] x86/kaslr: Drop some redundant checks from __process_mem_region Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] x86/kaslr: Drop some redundant checks from __process_mem_region() tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 10/21] x86/kaslr: Fix off-by-one error in process_gb_huge_pages Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] x86/kaslr: Fix off-by-one error in process_gb_huge_pages() tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 11/21] x86/kaslr: Short-circuit gb_huge_pages on x86-32 Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 12/21] x86/kaslr: Simplify process_gb_huge_pages Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] x86/kaslr: Simplify process_gb_huge_pages() tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 13/21] x86/kaslr: Drop test for command-line parameters before parsing Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 14/21] x86/kaslr: Make the type of number of slots/slot areas consistent Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 15/21] x86/kaslr: Drop redundant check in store_slot_info Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] x86/kaslr: Drop redundant check in store_slot_info() tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 16/21] x86/kaslr: Drop unnecessary alignment in find_random_virt_addr Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] x86/kaslr: Drop unnecessary alignment in find_random_virt_addr() tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 17/21] x86/kaslr: Small cleanup of find_random_phys_addr Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] x86/kaslr: Small cleanup of find_random_phys_addr() tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 18/21] x86/kaslr: Make minimum/image_size unsigned long Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] x86/kaslr: Make minimum/image_size 'unsigned long' tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 19/21] x86/kaslr: Replace unsigned long long with u64 Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] x86/kaslr: Replace 'unsigned long long' with 'u64' tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 20/21] x86/kaslr: Make local variables 64-bit Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-28 22:57 ` [PATCH v3 21/21] x86/kaslr: Add a check that the random address is in range Arvind Sankar
2020-08-06 23:38 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-27 23:07 ` [PATCH v2 1/8] x86/kaslr: Make command line handling safer Arvind Sankar
2020-07-28 12:29 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-28 18:26 ` [PATCH v2 1/8] " Kees Cook
2020-08-06 23:39 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-27 23:07 ` [PATCH v2 2/8] x86/kaslr: Remove bogus warning and unnecessary goto Arvind Sankar
2020-07-28 12:29 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-28 18:26 ` [PATCH v2 2/8] " Kees Cook
2020-08-06 23:39 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-27 23:07 ` [PATCH v2 3/8] x86/kaslr: Fix process_efi_entries comment Arvind Sankar
2020-07-28 12:29 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-28 18:27 ` [PATCH v2 3/8] " Kees Cook
2020-08-06 23:39 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-27 23:07 ` [PATCH v2 4/8] x86/kaslr: Initialize mem_limit to the real maximum address Arvind Sankar
2020-07-28 12:29 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-28 18:49 ` [PATCH v2 4/8] " Kees Cook
2020-08-06 23:39 ` [tip: x86/kaslr] " tip-bot2 for Arvind Sankar
2020-07-27 23:07 ` [PATCH v2 5/8] x86/kaslr: Simplify __process_mem_region Arvind Sankar
2020-07-28 19:25 ` Kees Cook
2020-07-28 19:42 ` Arvind Sankar
2020-07-27 23:07 ` [PATCH v2 6/8] x86/kaslr: Simplify process_gb_huge_pages Arvind Sankar
2020-07-28 19:27 ` Kees Cook
2020-07-28 19:45 ` Arvind Sankar
2020-07-28 20:13 ` Kees Cook
2020-07-27 23:08 ` [PATCH v2 7/8] x86/kaslr: Clean up slot handling Arvind Sankar
2020-07-28 19:34 ` Kees Cook
2020-07-28 20:04 ` Arvind Sankar
2020-07-27 23:08 ` [PATCH v2 8/8] x86/kaslr: Don't use 64-bit mem_vector for 32-bit kernel Arvind Sankar
2020-07-28 19:37 ` Kees Cook
2020-07-28 20:08 ` Arvind Sankar
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