From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH 17/32] password: avoid static analyzer false positive
Date: Mon, 5 Sep 2022 11:55:42 +0200 [thread overview]
Message-ID: <20220905095557.596891-18-a.fatoum@pengutronix.de> (raw)
In-Reply-To: <20220905095557.596891-1-a.fatoum@pengutronix.de>
default_passwd is a compile-time constant. In case, where it's unset,
the function will early-return and the static analyzer will warn about
len being initialized, but never used, move the length calculation later
to avoid this false positive.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
common/password.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/common/password.c b/common/password.c
index aea7c7ff5d21..55b2d1093ab9 100644
--- a/common/password.c
+++ b/common/password.c
@@ -148,8 +148,7 @@ static unsigned char to_hexa(unsigned char c)
static int read_default_passwd(unsigned char *sum, size_t length)
{
- int i = 0;
- int len = strlen(default_passwd);
+ int len, i = 0;
unsigned char *buf = (unsigned char *)default_passwd;
unsigned char c;
@@ -159,6 +158,7 @@ static int read_default_passwd(unsigned char *sum, size_t length)
if (!sum || length < 1)
return -EINVAL;
+ len = strlen(default_passwd);
for (i = 0; i < len && length > 0; i++) {
c = buf[i];
i++;
--
2.30.2
next prev parent reply other threads:[~2022-09-05 15:36 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-05 9:55 [PATCH 00/32] treewide: fix some clang-analyze static analyzer warnings Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 01/32] clk: define stub implementation for clk_get_parent Ahmad Fatoum
2022-09-12 9:23 ` Sascha Hauer
2022-09-05 9:55 ` [PATCH 02/32] clk: have SCMI and SiFive clock controllers depend on COMMON_CLK Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 03/32] meminfo: support SANDBOX build with DEBUG log level Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 04/32] net: phy: micrel: drop useless assignment of dummy read Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 05/32] mci: core: drop useless assignment Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 06/32] nvmem: core: propagate read failure Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 07/32] fs: remove never-read initializer in mount_all() Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 08/32] usb: otg: always propagate failure to register parameters Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 09/32] usb: dwc2: gracefully handle unknown hs_phy_type Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 10/32] state: propagate failure to fixup enum32 into DT Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 11/32] of: silence warning about never-read error assignment Ahmad Fatoum
2022-09-12 9:41 ` Sascha Hauer
2022-09-05 9:55 ` [PATCH 12/32] commands: trigger: drop unused variable Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 13/32] commands: tutorial: fix memory leak Ahmad Fatoum
2022-09-12 9:44 ` Sascha Hauer
2022-09-05 9:55 ` [PATCH 14/32] bthread: fix null pointer dereference in error path Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 15/32] common: env: drop never-read initialization Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 16/32] of: refactor for of_fixup_reserved_memory() for clarity Ahmad Fatoum
2022-09-05 9:55 ` Ahmad Fatoum [this message]
2022-09-05 9:55 ` [PATCH 18/32] regmap-mmio: regmap_mmio_get_min_stride: unify branches for readability Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 19/32] crypto: caam - delete unused variable Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 20/32] misc: ubootvar: always initialize struct ubootvar_data::flag Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 21/32] nvmem: core: drop always true condition Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 22/32] of: fdt: gracefully handle out-of-place properties Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 23/32] of: overlay: drop unused variable of_overlay_apply_dir() Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 24/32] of: partition: drop unused variable Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 25/32] serial: ns16550_pci: drop useless assignment Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 26/32] phy: core: drop useless else clause Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 27/32] fs: ext4: ext_barebox: handle ext_get_inode() errors Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 28/32] fs: fat: propagate f_lseek failure Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 29/32] fs: drop duplicate follow_managed() call Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 30/32] lib: parse_area_spec: guard against NULL pointer dereference Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 31/32] net: ping: propagate failure Ahmad Fatoum
2022-09-05 9:55 ` [PATCH 32/32] net: fastboot: keep error message initialized at all times Ahmad Fatoum
2022-09-12 10:06 ` [PATCH 00/32] treewide: fix some clang-analyze static analyzer warnings Sascha Hauer
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