lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <20180313112034.GA28234@embeddedgus>
Date:   Tue, 13 Mar 2018 06:20:34 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] EDAC, sb_edac: Remove VLA usage

In preparation to enabling -Wvla, remove VLA and replace it
with a fixed-length array instead.

Fixed as part of the directive to remove all VLAs from
the kernel: https://lkml.org/lkml/2018/3/7/621

Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
---
Changes in v2:
 - Use macro max_t to compute the max of all three array sizes.
   This change is based on Borislav's feedback.

 drivers/edac/sb_edac.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 8721002..196b012 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -110,6 +110,10 @@ static const u32 knl_interleave_list[] = {
 	0xdc, 0xe4, 0xec, 0xf4, 0xfc, /* 15-19 */
 	0x104, 0x10c, 0x114, 0x11c,   /* 20-23 */
 };
+#define MAX_INTERLEAVE (max_t(unsigned int, ARRAY_SIZE(sbridge_interleave_list),\
+			max_t(unsigned int, ARRAY_SIZE(ibridge_interleave_list),\
+					    ARRAY_SIZE(knl_interleave_list))))
+
 
 struct interleave_pkg {
 	unsigned char start;
@@ -1899,7 +1903,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
 	int			n_rir, n_sads, n_tads, sad_way, sck_xch;
 	int			sad_interl, idx, base_ch;
 	int			interleave_mode, shiftup = 0;
-	unsigned		sad_interleave[pvt->info.max_interleave];
+	unsigned int		sad_interleave[MAX_INTERLEAVE];
 	u32			reg, dram_rule;
 	u8			ch_way, sck_way, pkg, sad_ha = 0;
 	u32			tad_offset;
-- 
2.7.4

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ