From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Tom Rix <trix@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
Sam Ravnborg <sam@ravnborg.org>, Sasha Levin <sashal@kernel.org>,
dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org,
clang-built-linux@googlegroups.com
Subject: [PATCH AUTOSEL 4.4 06/25] video: fbdev: pvr2fb: initialize variables
Date: Mon, 26 Oct 2020 20:11:04 -0400 [thread overview]
Message-ID: <20201027001123.1027642-6-sashal@kernel.org> (raw)
In-Reply-To: <20201027001123.1027642-1-sashal@kernel.org>
From: Tom Rix <trix@redhat.com>
[ Upstream commit 8e1ba47c60bcd325fdd097cd76054639155e5d2e ]
clang static analysis reports this repesentative error
pvr2fb.c:1049:2: warning: 1st function call argument
is an uninitialized value [core.CallAndMessage]
if (*cable_arg)
^~~~~~~~~~~~~~~
Problem is that cable_arg depends on the input loop to
set the cable_arg[0]. If it does not, then some random
value from the stack is used.
A similar problem exists for output_arg.
So initialize cable_arg and output_arg.
Signed-off-by: Tom Rix <trix@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200720191845.20115-1-trix@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/video/fbdev/pvr2fb.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/video/fbdev/pvr2fb.c b/drivers/video/fbdev/pvr2fb.c
index 750a384bf1915..1a015a6b682e7 100644
--- a/drivers/video/fbdev/pvr2fb.c
+++ b/drivers/video/fbdev/pvr2fb.c
@@ -1029,6 +1029,8 @@ static int __init pvr2fb_setup(char *options)
if (!options || !*options)
return 0;
+ cable_arg[0] = output_arg[0] = 0;
+
while ((this_opt = strsep(&options, ","))) {
if (!*this_opt)
continue;
--
2.25.1
next prev parent reply other threads:[~2020-10-27 0:14 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-27 0:10 [PATCH AUTOSEL 4.4 01/25] powerpc/powernv/smp: Fix spurious DBG() warning Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 02/25] sparc64: remove mm_cpumask clearing to fix kthread_use_mm race Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 03/25] f2fs: fix to check segment boundary during SIT page readahead Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 04/25] um: change sigio_spinlock to a mutex Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 05/25] xfs: fix realtime bitmap/summary file truncation when growing rt volume Sasha Levin
2020-10-27 0:11 ` Sasha Levin [this message]
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 07/25] ath10k: fix VHT NSS calculation when STBC is enabled Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 08/25] mmc: via-sdmmc: Fix data race bug Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 09/25] printk: reduce LOG_BUF_SHIFT range for H8300 Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 10/25] kgdb: Make "kgdbcon" work properly with "kgdb_earlycon" Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 11/25] USB: adutux: fix debugging Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 12/25] ACPI: Add out of bounds and numa_off protections to pxm_to_node() Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 13/25] dm: change max_io_len() to use blk_max_size_offset() Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 14/25] drivers/net/wan/hdlc_fr: Correctly handle special skb->protocol values Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 15/25] power: supply: test_power: add missing newlines when printing parameters by sysfs Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 16/25] md/bitmap: md_bitmap_get_counter returns wrong blocks Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 17/25] clk: ti: clockdomain: fix static checker warning Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 18/25] net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 19/25] drivers: watchdog: rdc321x_wdt: Fix race condition bugs Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 20/25] ext4: Detect already used quota file early Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 21/25] KVM: PPC: Book3S HV: Do not allocate HPT for a nested guest Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 22/25] gfs2: add validation checks for size of superblock Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 23/25] memory: emif: Remove bogus debugfs error handling Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 24/25] ARM: dts: s5pv210: move PMU node out of clock controller Sasha Levin
2020-10-27 0:11 ` [PATCH AUTOSEL 4.4 25/25] ARM: dts: s5pv210: remove dedicated 'audio-subsystem' node Sasha Levin
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