From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Avraham Stern <avraham.stern@intel.com>,
Miri Korenblit <miriam.rachel.korenblit@intel.com>,
Johannes Berg <johannes.berg@intel.com>,
Sasha Levin <sashal@kernel.org>,
gregory.greenman@intel.com, kvalo@kernel.org,
benjamin.berg@intel.com, ansuelsmth@gmail.com,
pagadala.yesu.anjaneyulu@intel.com,
linux-wireless@vger.kernel.org
Subject: [PATCH AUTOSEL 6.6 14/39] wifi: iwlwifi: pcie: avoid a NULL pointer dereference
Date: Mon, 25 Dec 2023 19:19:04 -0500 [thread overview]
Message-ID: <20231226002021.4776-14-sashal@kernel.org> (raw)
In-Reply-To: <20231226002021.4776-1-sashal@kernel.org>
From: Avraham Stern <avraham.stern@intel.com>
[ Upstream commit ce038edfce43fb345f8dfdca0f7b17f535896701 ]
It possible that while the rx rb is being handled, the transport has
been stopped and re-started. In this case the tx queue pointer is not
yet initialized, which will lead to a NULL pointer dereference.
Fix it.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20231207044813.cd0898cafd89.I0b84daae753ba9612092bf383f5c6f761446e964@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
index 4614acee9f7ba..586e1f860c169 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
@@ -1385,7 +1385,7 @@ static void iwl_pcie_rx_handle_rb(struct iwl_trans *trans,
* if it is true then one of the handlers took the page.
*/
- if (reclaim) {
+ if (reclaim && txq) {
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
int index = SEQ_TO_INDEX(sequence);
int cmd_index = iwl_txq_get_cmd_index(txq, index);
--
2.43.0
next prev parent reply other threads:[~2023-12-26 0:20 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-26 0:18 [PATCH AUTOSEL 6.6 01/39] Input: psmouse - enable Synaptics InterTouch for ThinkPad L14 G1 Sasha Levin
2023-12-26 0:18 ` [PATCH AUTOSEL 6.6 02/39] reset: hisilicon: hi6220: fix Wvoid-pointer-to-enum-cast warning Sasha Levin
2023-12-26 0:18 ` [PATCH AUTOSEL 6.6 03/39] Input: atkbd - skip ATKBD_CMD_GETID in translated mode Sasha Levin
2023-12-26 0:18 ` [PATCH AUTOSEL 6.6 04/39] Input: i8042 - add nomux quirk for Acer P459-G2-M Sasha Levin
2023-12-26 0:18 ` [PATCH AUTOSEL 6.6 05/39] Input: amimouse - convert to platform remove callback returning void Sasha Levin
2023-12-26 0:18 ` [PATCH AUTOSEL 6.6 06/39] pinctrl: amd: Mask non-wake source pins with interrupt enabled at suspend Sasha Levin
2023-12-26 0:18 ` [PATCH AUTOSEL 6.6 07/39] spi: cadence: revert "Add SPI transfer delays" Sasha Levin
2023-12-26 0:18 ` [PATCH AUTOSEL 6.6 08/39] ASoC: cs35l45: Use modern pm_ops Sasha Levin
2023-12-26 0:18 ` [PATCH AUTOSEL 6.6 09/39] ASoC: cs35l45: Prevent IRQ handling when suspending/resuming Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 10/39] ASoC: cs35l45: Prevents spinning during runtime suspend Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 11/39] s390/scm: fix virtual vs physical address confusion Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 12/39] ARC: fix spare error Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 13/39] ARC: fix smatch warning Sasha Levin
2023-12-26 0:19 ` Sasha Levin [this message]
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 15/39] Input: xpad - add Razer Wolverine V2 support Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 16/39] driver core: Add a guard() definition for the device_lock() Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 17/39] kselftest: alsa: fixed a print formatting warning Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 18/39] HID: nintendo: fix initializer element is not constant error Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 19/39] platform/x86: thinkpad_acpi: fix for incorrect fan reporting on some ThinkPad systems Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 20/39] platform/x86/amd/pmc: Move platform defines to header Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 21/39] platform/x86/amd/pmc: Only run IRQ1 firmware version check on Cezanne Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 22/39] platform/x86/amd/pmc: Move keyboard wakeup disablement detection to pmc-quirks Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 23/39] platform/x86/amd/pmc: Disable keyboard wakeup on AMD Framework 13 Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 24/39] ASoC: Intel: bytcr_rt5640: Add quirk for the Medion Lifetab S10346 Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 25/39] ASoC: Intel: bytcr_rt5640: Add new swapped-speakers quirk Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 26/39] ALSA: hda/realtek: Add quirks for ASUS Zenbook 2022 Models Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 27/39] dm audit: fix Kconfig so DM_AUDIT depends on BLK_DEV_DM Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 28/39] HID: nintendo: Prevent divide-by-zero on code Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 29/39] smb: client: fix potential OOB in smb2_dump_detail() Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 30/39] Revert "nvme-fc: fix race between error recovery and creating association" Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 31/39] i2c: rk3x: fix potential spinlock recursion on poll Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 32/39] drm/amdkfd: svm range always mapped flag not working on APU Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 33/39] drm/amd/display: Add case for dcn35 to support usb4 dmub hpd event Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 34/39] drm/amd/display: get dprefclk ss info from integration info table Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 35/39] pinctrl: cy8c95x0: Fix typo Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 36/39] pinctrl: cy8c95x0: Fix regression Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 37/39] pinctrl: cy8c95x0: Fix get_pincfg Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 38/39] posix-timers: Get rid of [COMPAT_]SYS_NI() uses Sasha Levin
2023-12-26 0:19 ` [PATCH AUTOSEL 6.6 39/39] ida: Fix crash in ida_free when the bitmap is empty Sasha Levin
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