From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>,
Bjorn Helgaas <bjorn@helgaas.com>,
Kalle Valo <kvalo@codeaurora.org>,
Sasha Levin <sashal@kernel.org>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.7 42/60] iwlegacy: Check the return value of pcie_capability_read_*()
Date: Mon, 10 Aug 2020 15:10:10 -0400 [thread overview]
Message-ID: <20200810191028.3793884-42-sashal@kernel.org> (raw)
In-Reply-To: <20200810191028.3793884-1-sashal@kernel.org>
From: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
[ Upstream commit 9018fd7f2a73e9b290f48a56b421558fa31e8b75 ]
On failure pcie_capability_read_dword() sets it's last parameter, val
to 0. However, with Patch 14/14, it is possible that val is set to ~0 on
failure. This would introduce a bug because (x & x) == (~0 & x).
This bug can be avoided without changing the function's behaviour if the
return value of pcie_capability_read_dword is checked to confirm success.
Check the return value of pcie_capability_read_dword() to ensure success.
Suggested-by: Bjorn Helgaas <bjorn@helgaas.com>
Signed-off-by: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200713175529.29715-3-refactormyself@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlegacy/common.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlegacy/common.c b/drivers/net/wireless/intel/iwlegacy/common.c
index 348c17ce72f5c..f78e062df572a 100644
--- a/drivers/net/wireless/intel/iwlegacy/common.c
+++ b/drivers/net/wireless/intel/iwlegacy/common.c
@@ -4286,8 +4286,8 @@ il_apm_init(struct il_priv *il)
* power savings, even without L1.
*/
if (il->cfg->set_l0s) {
- pcie_capability_read_word(il->pci_dev, PCI_EXP_LNKCTL, &lctl);
- if (lctl & PCI_EXP_LNKCTL_ASPM_L1) {
+ ret = pcie_capability_read_word(il->pci_dev, PCI_EXP_LNKCTL, &lctl);
+ if (!ret && (lctl & PCI_EXP_LNKCTL_ASPM_L1)) {
/* L1-ASPM enabled; disable(!) L0S */
il_set_bit(il, CSR_GIO_REG,
CSR_GIO_REG_VAL_L0S_ENABLED);
--
2.25.1
next prev parent reply other threads:[~2020-08-10 19:11 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-10 19:09 [PATCH AUTOSEL 5.7 01/60] drm/tilcdc: fix leak & null ref in panel_connector_get_modes Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 02/60] soc: qcom: rpmh-rsc: Set suppress_bind_attrs flag Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 03/60] net: mscc: ocelot: fix encoding destination ports into multicast IPv4 address Sasha Levin
2020-08-10 21:01 ` Vladimir Oltean
2020-08-11 16:42 ` Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 04/60] ARM: exynos: clear L310_AUX_CTRL_FULL_LINE_ZERO in default l2c_aux_val Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 05/60] Bluetooth: add a mutex lock to avoid UAF in do_enale_set Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 06/60] loop: be paranoid on exit and prevent new additions / removals Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 07/60] io_uring: fix req->work corruption Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 08/60] fs/btrfs: Add cond_resched() for try_release_extent_mapping() stalls Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 09/60] drm/amdgpu: avoid dereferencing a NULL pointer Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 10/60] drm/radeon: Fix reference count leaks caused by pm_runtime_get_sync Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 11/60] crypto: aesni - Fix build with LLVM_IAS=1 Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 12/60] video: fbdev: savage: fix memory leak on error handling path in probe Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 13/60] video: fbdev: neofb: fix memory leak in neo_scan_monitor() Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 14/60] bus: ti-sysc: Add missing quirk flags for usb_host_hs Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 15/60] md-cluster: fix wild pointer of unlock_all_bitmaps() Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 16/60] drm/nouveau/kms/nv50-: Fix disabling dithering Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 17/60] arm64: dts: hisilicon: hikey: fixes to comply with adi, adv7533 DT binding Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 18/60] drm/etnaviv: fix ref count leak via pm_runtime_get_sync Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 19/60] memory: samsung: exynos5422-dmc: Do not ignore return code of regmap_read() Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 20/60] drm/nouveau: fix reference count leak in nouveau_debugfs_strap_peek Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 21/60] drm/nouveau: fix multiple instances of reference count leaks Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 22/60] mmc: sdhci-cadence: do not use hardware tuning for SD mode Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 23/60] btrfs: fix lockdep splat from btrfs_dump_space_info Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 24/60] usb: mtu3: clear dual mode of u3port when disable device Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 25/60] drm: msm: a6xx: fix gpu failure after system resume Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 26/60] drm/msm: Fix a null pointer access in msm_gem_shrinker_count() Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 27/60] drm/debugfs: fix plain echo to connector "force" attribute Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 28/60] drm/radeon: disable AGP by default Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 29/60] net: phy: mscc: restore the base page in vsc8514/8584_config_init Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 30/60] irqchip/irq-mtk-sysirq: Replace spinlock with raw_spinlock Sasha Levin
2020-08-10 19:09 ` [PATCH AUTOSEL 5.7 31/60] mm/mmap.c: Add cond_resched() for exit_mmap() CPU stalls Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 32/60] drm/amd/display: Improve DisplayPort monitor interop Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 33/60] drm/amdgpu/display bail early in dm_pp_get_static_clocks Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 34/60] drm/amdgpu/display: properly guard the calls to swSMU functions Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 35/60] drm/amd/powerplay: fix compile error with ARCH=arc Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 36/60] bpf: Fix fds_example SIGSEGV error Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 37/60] Bluetooth: hci_qca: Bug fixes for SSR Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 38/60] brcmfmac: keep SDIO watchdog running when console_interval is non-zero Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 39/60] brcmfmac: To fix Bss Info flag definition Bug Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 40/60] brcmfmac: set state of hanger slot to FREE when flushing PSQ Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 41/60] platform/x86: asus-nb-wmi: add support for ASUS ROG Zephyrus G14 and G15 Sasha Levin
2020-08-10 19:10 ` Sasha Levin [this message]
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 43/60] gpu: host1x: debug: Fix multiple channels emitting messages simultaneously Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 44/60] drm/amd/powerplay: suppress compile error around BUG_ON Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 45/60] ionic: update eid test for overflow Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 46/60] x86/uaccess: Make __get_user_size() Clang compliant on 32-bit Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 47/60] mmc: sdhci-pci-o2micro: Bug fix for O2 host controller Seabird1 Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 48/60] usb: gadget: net2280: fix memory leak on probe error handling paths Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 49/60] bdc: Fix bug causing crash after multiple disconnects Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 50/60] usb: bdc: Halt controller on suspend Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 51/60] dyndbg: fix a BUG_ON in ddebug_describe_flags Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 52/60] dyndbg: prefer declarative init in caller, to memset in callee Sasha Levin
2020-08-11 5:13 ` Greg Kroah-Hartman
2020-08-15 23:07 ` Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 53/60] bcache: fix super block seq numbers comparision in register_cache_set() Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 54/60] btrfs: allow btrfs_truncate_block() to fallback to nocow for data space reservation Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 55/60] btrfs: qgroup: free per-trans reserved space when a subvolume gets dropped Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 56/60] ACPICA: Do not increment operation_region reference counts for field units Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 57/60] io_uring: fix racy overflow count reporting Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 58/60] io_uring: fix stalled deferred requests Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 59/60] crypto: caam - silence .setkey in case of bad key length Sasha Levin
2020-08-10 19:10 ` [PATCH AUTOSEL 5.7 60/60] drm/msm: ratelimit crtc event overflow error Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200810191028.3793884-42-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=bjorn@helgaas.com \
--cc=kvalo@codeaurora.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-wireless@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=refactormyself@gmail.com \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).