From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Marek Vasut <marex@denx.de>,
Linus Walleij <linus.walleij@linaro.org>,
Sasha Levin <sashal@kernel.org>,
linux-gpio@vger.kernel.org
Subject: [PATCH AUTOSEL 4.4 42/48] gpio: syscon: Fix possible NULL ptr usage
Date: Tue, 12 Nov 2019 21:01:25 -0500 [thread overview]
Message-ID: <20191113020131.13356-42-sashal@kernel.org> (raw)
In-Reply-To: <20191113020131.13356-1-sashal@kernel.org>
From: Marek Vasut <marex@denx.de>
[ Upstream commit 70728c29465bc4bfa7a8c14304771eab77e923c7 ]
The priv->data->set can be NULL while flags contains GPIO_SYSCON_FEAT_OUT
and chip->set is valid pointer. This happens in case the controller uses
the default GPIO setter. Always use chip->set to access the setter to avoid
possible NULL pointer dereferencing.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpio/gpio-syscon.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-syscon.c b/drivers/gpio/gpio-syscon.c
index 7b25fdf648023..f579938552cc5 100644
--- a/drivers/gpio/gpio-syscon.c
+++ b/drivers/gpio/gpio-syscon.c
@@ -127,7 +127,7 @@ static int syscon_gpio_dir_out(struct gpio_chip *chip, unsigned offset, int val)
BIT(offs % SYSCON_REG_BITS));
}
- priv->data->set(chip, offset, val);
+ chip->set(chip, offset, val);
return 0;
}
--
2.20.1
next prev parent reply other threads:[~2019-11-13 2:03 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-13 2:00 [PATCH AUTOSEL 4.4 01/48] net: ovs: fix return type of ndo_start_xmit function Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 02/48] ARM: dts: omap5: enable OTG role for DWC3 controller Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 03/48] f2fs: return correct errno in f2fs_gc Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 04/48] SUNRPC: Fix priority queue fairness Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 05/48] ath10k: fix vdev-start timeout on error Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 06/48] ath9k: fix reporting calculated new FFT upper max Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 07/48] usb: gadget: udc: fotg210-udc: Fix a sleep-in-atomic-context bug in fotg210_get_status() Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 08/48] nl80211: Fix a GET_KEY reply attribute Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 09/48] dmaengine: ep93xx: Return proper enum in ep93xx_dma_chan_direction Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 10/48] dmaengine: timb_dma: Use proper enum in td_prep_slave_sg Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 11/48] mei: samples: fix a signedness bug in amt_host_if_call() Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 12/48] cxgb4: Use proper enum in cxgb4_dcb_handle_fw_update Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 13/48] cxgb4: Use proper enum in IEEE_FAUX_SYNC Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 14/48] powerpc/pseries: Fix DTL buffer registration Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 15/48] powerpc/pseries: Fix how we iterate over the DTL entries Sasha Levin
2019-11-13 2:00 ` [PATCH AUTOSEL 4.4 16/48] mtd: rawnand: sh_flctl: Use proper enum for flctl_dma_fifo0_transfer Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 17/48] ixgbe: Fix crash with VFs and flow director on interface flap Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 18/48] IB/mthca: Fix error return code in __mthca_init_one() Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 19/48] ata: ep93xx: Use proper enums for directions Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 20/48] ALSA: hda/sigmatel - Disable automute for Elo VuPoint Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 21/48] KVM: PPC: Book3S PR: Exiting split hack mode needs to fixup both PC and LR Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 22/48] USB: serial: cypress_m8: fix interrupt-out transfer length Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 23/48] mtd: physmap_of: Release resources on error Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 24/48] brcmfmac: fix full timeout waiting for action frame on-channel tx Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 25/48] NFSv4.x: fix lock recovery during delegation recall Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 26/48] dmaengine: ioat: fix prototype of ioat_enumerate_channels Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 27/48] Input: st1232 - set INPUT_PROP_DIRECT property Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 28/48] x86/olpc: Fix build error with CONFIG_MFD_CS5535=m Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 29/48] crypto: mxs-dcp - Fix SHA null hashes and output length Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 30/48] crypto: mxs-dcp - Fix AES issues Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 31/48] ACPI / SBS: Fix rare oops when removing modules Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 32/48] fbdev: sbuslib: use checked version of put_user() Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 33/48] fbdev: sbuslib: integer overflow in sbusfb_ioctl_helper() Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 34/48] bcache: recal cached_dev_sectors on detach Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 35/48] proc/vmcore: Fix i386 build error of missing copy_oldmem_page_encrypted() Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 36/48] backlight: lm3639: Unconditionally call led_classdev_unregister Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 37/48] printk: Give error on attempt to set log buffer length to over 2G Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 38/48] media: isif: fix a NULL pointer dereference bug Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 39/48] GFS2: Flush the GFS2 delete workqueue before stopping the kernel threads Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 40/48] media: cx231xx: fix potential sign-extension overflow on large shift Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 41/48] x86/kexec: Correct KEXEC_BACKUP_SRC_END off-by-one error Sasha Levin
2019-11-13 2:01 ` Sasha Levin [this message]
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 43/48] spi: spidev: Fix OF tree warning logic Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 44/48] ARM: 8802/1: Call syscall_trace_exit even when system call skipped Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 45/48] hwmon: (pwm-fan) Silence error on probe deferral Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 46/48] mac80211: minstrel: fix CCK rate group streams value Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 47/48] spi: rockchip: initialize dma_slave_config properly Sasha Levin
2019-11-13 2:01 ` [PATCH AUTOSEL 4.4 48/48] ARM: dts: omap5: Fix dual-role mode on Super-Speed port Sasha Levin
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