From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Linux ACPI <linux-acpi@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Bob Moore <robert.moore@intel.com>, Kees Cook <kees@outflux.net>,
Dan Williams <dan.j.williams@intel.com>
Subject: [PATCH 23/32] ACPICA: struct acpi_nfit_interleave: Replace 1-element array with flexible array
Date: Wed, 05 Apr 2023 15:51:25 +0200 [thread overview]
Message-ID: <2652195.BddDVKsqQX@kreacher> (raw)
In-Reply-To: <4845957.31r3eYUQgx@kreacher>
From: Kees Cook <kees@outflux.net>
ACPICA commit e66decc6fca36b59194b0947d87d6a9bec078bc3
Similar to "Replace one-element array with flexible-array", replace the
1-element array with a proper flexible array member as defined by C99.
This allows the code to operate without tripping compile-time and run-
time bounds checkers (e.g. via __builtin_object_size(), -fsanitize=bounds,
and/or -fstrict-flex-arrays=3).
Unlike struct acpi_nfit_flush_address and struct acpi_nfit_smbios, which
had their sizeof() uses adjusted in code, struct acpi_nfit_interleave did
not. This appears to have been a bug. After this change, there is a binary
difference in acpi_dm_dump_nfit() since the size of the structure now has
the correct size, as the prior result was including the trailing U32:
- mov $0x14,%ebp
+ mov $0x10,%ebp
Link: https://github.com/acpica/acpica/commit/e66decc6
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/acpi/nfit/core.c | 2 +-
include/acpi/actbl2.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 981f8b0f595d..a398f32dfd68 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -3476,7 +3476,7 @@ static __init int nfit_init(void)
BUILD_BUG_ON(sizeof(struct acpi_table_nfit) != 40);
BUILD_BUG_ON(sizeof(struct acpi_nfit_system_address) != 64);
BUILD_BUG_ON(sizeof(struct acpi_nfit_memory_map) != 48);
- BUILD_BUG_ON(sizeof(struct acpi_nfit_interleave) != 20);
+ BUILD_BUG_ON(sizeof(struct acpi_nfit_interleave) != 16);
BUILD_BUG_ON(sizeof(struct acpi_nfit_smbios) != 8);
BUILD_BUG_ON(sizeof(struct acpi_nfit_control_region) != 80);
BUILD_BUG_ON(sizeof(struct acpi_nfit_data_region) != 40);
diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index 6d3251ea4c53..a51fd4090d27 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -1700,7 +1700,7 @@ struct acpi_nfit_interleave {
u16 reserved; /* Reserved, must be zero */
u32 line_count;
u32 line_size;
- u32 line_offset[1]; /* Variable length */
+ u32 line_offset[]; /* Variable length */
};
/* 3: SMBIOS Management Information Structure */
--
2.35.3
next prev parent reply other threads:[~2023-04-05 14:01 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-05 13:29 [PATCH 00/32] ACPICA: ACPICA 20230331 Rafael J. Wysocki
2023-04-05 13:32 ` [PATCH 01/32] ACPICA: Headers: Delete bogus node_array array of pointers from AEST table Rafael J. Wysocki
2023-04-05 13:33 ` [PATCH 02/32] ACPICA: ACPI 6.5: MADT: add support for trace buffer extension in GICC Rafael J. Wysocki
2023-04-05 13:34 ` [PATCH 03/32] ACPICA: Add missing macro ACPI_FUNCTION_TRACE() for acpi_ns_repair_HID() Rafael J. Wysocki
2023-04-05 13:35 ` [PATCH 04/32] ACPICA: acpisrc: Add missing tables to astable Rafael J. Wysocki
2023-04-05 13:36 ` [PATCH 05/32] ACPICA: Add support for 64 bit loong_arch compilation Rafael J. Wysocki
2023-04-05 13:36 ` [PATCH 06/32] ACPICA: Add support for ASPT table in disassembler Rafael J. Wysocki
2023-04-05 13:37 ` [PATCH 07/32] ACPICA: Add support for Arm's MPAM ACPI table version 2 Rafael J. Wysocki
2023-04-05 13:38 ` [PATCH 08/32] ACPICA: Update all copyrights/signons to 2023 Rafael J. Wysocki
2023-04-05 13:39 ` [PATCH 09/32] ACPICA: add support for ClockInput resource (v6.5) Rafael J. Wysocki
2023-04-05 13:40 ` [PATCH 10/32] ACPICA: MADT: Add RISC-V INTC interrupt controller Rafael J. Wysocki
2023-04-05 13:40 ` [PATCH 11/32] ACPICA: Add structure definitions for RISC-V RHCT Rafael J. Wysocki
2023-04-05 13:41 ` [PATCH 12/32] ACPICA: Avoid undefined behavior: load of misaligned address Rafael J. Wysocki
2023-04-05 13:42 ` [PATCH 13/32] ACPICA: Avoid undefined behavior: applying zero offset to null pointer Rafael J. Wysocki
2023-04-05 13:43 ` [PATCH 14/32] ACPICA: Avoid undefined behavior: member access within " Rafael J. Wysocki
2023-04-05 13:44 ` [PATCH 15/32] ACPICA: Avoid undefined behavior: member access within misaligned address Rafael J. Wysocki
2023-04-05 13:44 ` [PATCH 16/32] " Rafael J. Wysocki
2023-04-05 13:45 ` [PATCH 17/32] " Rafael J. Wysocki
2023-04-05 13:46 ` [PATCH 18/32] " Rafael J. Wysocki
2023-04-05 13:47 ` [PATCH 19/32] ACPICA: Avoid undefined behavior: load of " Rafael J. Wysocki
2023-04-05 13:48 ` [PATCH 20/32] ACPICA: struct acpi_resource_vendor: Replace 1-element array with flexible array Rafael J. Wysocki
2023-04-05 13:48 ` [PATCH 21/32] ACPICA: actbl1: Replace 1-element arrays with flexible arrays Rafael J. Wysocki
2023-04-05 13:50 ` [PATCH 22/32] ACPICA: actbl2: " Rafael J. Wysocki
2023-04-05 23:11 ` Dan Williams
2023-04-06 0:22 ` Dan Williams
2023-04-06 0:37 ` Kees Cook
2023-04-06 0:43 ` Dan Williams
2023-04-06 0:36 ` Dan Williams
2023-04-06 18:32 ` Rafael J. Wysocki
2023-04-05 13:51 ` Rafael J. Wysocki [this message]
2023-04-06 0:36 ` [PATCH 23/32] ACPICA: struct acpi_nfit_interleave: Replace 1-element array with flexible array Dan Williams
2023-04-05 13:52 ` [PATCH 24/32] ACPICA: Introduce ACPI_FLEX_ARRAY Rafael J. Wysocki
2023-04-05 13:53 ` [PATCH 25/32] ACPICA: struct acpi_resource_dma: Replace 1-element array with flexible array Rafael J. Wysocki
2023-04-05 13:54 ` [PATCH 26/32] ACPICA: acpi_pci_routing_table: Replace fixed-size array with flex array member Rafael J. Wysocki
2023-04-05 13:55 ` [PATCH 27/32] ACPICA: acpi_dmar_andd: Replace 1-element array with flexible array Rafael J. Wysocki
2023-04-05 13:56 ` [PATCH 28/32] ACPICA: acpi_madt_oem_data: Fix flexible array member definition Rafael J. Wysocki
2023-04-05 13:56 ` [PATCH 29/32] ACPICA: acpi_resource_irq: Replace 1-element arrays with flexible array Rafael J. Wysocki
2023-04-05 13:57 ` [PATCH 30/32] ACPICA: ACPICA: check null return of ACPI_ALLOCATE_ZEROED in acpi_db_display_objects Rafael J. Wysocki
2023-04-05 13:59 ` [PATCH 31/32] ACPICA: add os specific support for Zephyr RTOS Rafael J. Wysocki
2023-04-05 13:59 ` [PATCH 32/32] ACPICA: Update version to 20230331 Rafael J. Wysocki
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2652195.BddDVKsqQX@kreacher \
--to=rjw@rjwysocki.net \
--cc=dan.j.williams@intel.com \
--cc=kees@outflux.net \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=robert.moore@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).