From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Dan Carpenter <dan.carpenter@oracle.com>,
Lanqing Liu <liuhhome@gmail.com>
Subject: [PATCH 5.5 04/30] serial: sprd: Fix a dereference warning
Date: Wed, 1 Apr 2020 18:17:08 +0200 [thread overview]
Message-ID: <20200401161417.605801573@linuxfoundation.org> (raw)
In-Reply-To: <20200401161414.345528747@linuxfoundation.org>
From: Lanqing Liu <liuhhome@gmail.com>
commit efc176929a3505a30c3993ddd393b40893649bd2 upstream.
We should validate if the 'sup' is NULL or not before freeing DMA
memory, to fix below warning.
"drivers/tty/serial/sprd_serial.c:1141 sprd_remove()
error: we previously assumed 'sup' could be null (see line 1132)"
Fixes: f4487db58eb7 ("serial: sprd: Add DMA mode support")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lanqing Liu <liuhhome@gmail.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/e2bd92691538e95b04a2c2a728f3292e1617018f.1584325957.git.liuhhome@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/serial/sprd_serial.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/tty/serial/sprd_serial.c
+++ b/drivers/tty/serial/sprd_serial.c
@@ -1136,14 +1136,13 @@ static int sprd_remove(struct platform_d
if (sup) {
uart_remove_one_port(&sprd_uart_driver, &sup->port);
sprd_port[sup->port.line] = NULL;
+ sprd_rx_free_buf(sup);
sprd_ports_num--;
}
if (!sprd_ports_num)
uart_unregister_driver(&sprd_uart_driver);
- sprd_rx_free_buf(sup);
-
return 0;
}
next prev parent reply other threads:[~2020-04-01 16:20 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-01 16:17 [PATCH 5.5 00/30] 5.5.15-rc1 review Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 01/30] bpf: update jmp32 test cases to fix range bound deduction Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 02/30] mac80211: Check port authorization in the ieee80211_tx_dequeue() case Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 03/30] mac80211: fix authentication with iwlwifi/mvm Greg Kroah-Hartman
2020-04-01 16:17 ` Greg Kroah-Hartman [this message]
2020-04-01 16:17 ` [PATCH 5.5 05/30] vt: selection, introduce vc_is_sel Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 06/30] vt: ioctl, switch VT_IS_IN_USE and VT_BUSY to inlines Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 07/30] vt: switch vt_dont_switch to bool Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 08/30] vt: vt_ioctl: remove unnecessary console allocation checks Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 09/30] vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 10/30] vt: vt_ioctl: fix use-after-free in vt_in_use() Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 11/30] platform/x86: pmc_atom: Add Lex 2I385SW to critclk_systems DMI table Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 12/30] bpf: Explicitly memset the bpf_attr structure Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 13/30] bpf: Explicitly memset some bpf info structures declared on the stack Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 14/30] iwlwifi: dont send GEO_TX_POWER_LIMIT if no wgds table Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 15/30] gpiolib: acpi: Add quirk to ignore EC wakeups on HP x2 10 CHT + AXP288 model Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 16/30] net: ks8851-ml: Fix IO operations, again Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 17/30] clk: imx: Align imx sc clock msg structs to 4 Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 18/30] clk: imx: Align imx sc clock parent " Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 19/30] clk: ti: am43xx: Fix clock parent for RTC clock Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 20/30] libceph: fix alloc_msg_with_page_vector() memory leaks Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 21/30] arm64: alternative: fix build with clang integrated assembler Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 22/30] perf map: Fix off by one in strncpy() size argument Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 23/30] ARM: dts: oxnas: Fix clear-mask property Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 24/30] ARM: dts: bcm283x: Fix vc4s firmware bus DMA limitations Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 25/30] ARM: bcm2835-rpi-zero-w: Add missing pinctrl name Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 26/30] ARM: dts: imx6: phycore-som: fix arm and soc minimum voltage Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 27/30] ARM: dts: N900: fix onenand timings Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 28/30] ARM: dts: sun8i: r40: Move AHCI device node based on address order Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 29/30] arm64: dts: ls1043a-rdb: correct RGMII delay mode to rgmii-id Greg Kroah-Hartman
2020-04-01 16:17 ` [PATCH 5.5 30/30] arm64: dts: ls1046ardb: set RGMII interfaces to RGMII_ID mode Greg Kroah-Hartman
2020-04-02 0:13 ` [PATCH 5.5 00/30] 5.5.15-rc1 review Guenter Roeck
2020-04-02 7:10 ` Jon Hunter
2020-04-02 9:29 ` Naresh Kamboju
2020-04-02 16:45 ` shuah
2020-04-02 18:43 ` Greg Kroah-Hartman
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