From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>,
syzbot+bb82cafc737c002d11ca@syzkaller.appspotmail.com,
"David S . Miller" <davem@davemloft.net>,
Sasha Levin <sashal@kernel.org>,
netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.6 41/41] drivers: net: hamradio: Fix suspicious RCU usage warning in bpqether.c
Date: Fri, 22 May 2020 10:49:58 -0400 [thread overview]
Message-ID: <20200522144959.434379-41-sashal@kernel.org> (raw)
In-Reply-To: <20200522144959.434379-1-sashal@kernel.org>
From: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
[ Upstream commit 95f59bf88bb75281cc626e283ecefdd5d5641427 ]
This patch fixes the following warning:
=============================
WARNING: suspicious RCU usage
5.7.0-rc5-next-20200514-syzkaller #0 Not tainted
-----------------------------
drivers/net/hamradio/bpqether.c:149 RCU-list traversed in non-reader section!!
Since rtnl lock is held, pass this cond in list_for_each_entry_rcu().
Reported-by: syzbot+bb82cafc737c002d11ca@syzkaller.appspotmail.com
Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/hamradio/bpqether.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
index fbea6f232819..e2ad3c2e8df5 100644
--- a/drivers/net/hamradio/bpqether.c
+++ b/drivers/net/hamradio/bpqether.c
@@ -127,7 +127,8 @@ static inline struct net_device *bpq_get_ax25_dev(struct net_device *dev)
{
struct bpqdev *bpq;
- list_for_each_entry_rcu(bpq, &bpq_devices, bpq_list) {
+ list_for_each_entry_rcu(bpq, &bpq_devices, bpq_list,
+ lockdep_rtnl_is_held()) {
if (bpq->ethdev == dev)
return bpq->axdev;
}
--
2.25.1
prev parent reply other threads:[~2020-05-22 14:57 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-22 14:49 [PATCH AUTOSEL 5.6 01/41] arm64: dts: qcom: db820c: fix audio configuration Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 02/41] ARM: dts: rockchip: fix phy nodename for rk3228-evb Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 03/41] ARM: dts: rockchip: fix phy nodename for rk3229-xms6 Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 04/41] arm64: dts: rockchip: fix status for &gmac2phy in rk3328-evb.dts Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 05/41] arm64: dts: rockchip: swap interrupts interrupt-names rk3399 gpu node Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 06/41] ARM: dts: rockchip: swap clock-names of gpu nodes Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 07/41] ARM: dts: rockchip: fix pinctrl sub nodename for spi in rk322x.dtsi Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 08/41] gpio: tegra: mask GPIO IRQs during IRQ shutdown Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 09/41] ALSA: usb-audio: add mapping for ASRock TRX40 Creator Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 10/41] ARM: dts: omap4-droid4: Fix flakey wlan by disabling internal pull for gpio Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 11/41] ARM: dts: omap4-droid4: Fix occasional lost wakeirq for uart1 Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 12/41] net: microchip: encx24j600: add missed kthread_stop Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 13/41] kselftests: dmabuf-heaps: Fix confused return value on expected error testing Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 14/41] gfs2: move privileged user check to gfs2_quota_lock_check Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 15/41] gfs2: don't call quota_unhold if quotas are not locked Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 16/41] gfs2: Grab glock reference sooner in gfs2_add_revoke Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 17/41] drm/amdgpu: drop unnecessary cancel_delayed_work_sync on PG ungate Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 18/41] drm/amd/powerplay: perform PG ungate prior to CG ungate Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 19/41] drm/amdgpu: Use GEM obj reference for KFD BOs Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 20/41] Revert "gfs2: Don't demote a glock until its revokes are written" Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 21/41] cachefiles: Fix race between read_waiter and read_copier involving op->to_do Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 22/41] usb: dwc3: pci: Enable extcon driver for Intel Merrifield Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 23/41] usb: phy: twl6030-usb: Fix a resource leak in an error handling path in 'twl6030_usb_probe()' Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 24/41] usb: gadget: legacy: fix redundant initialization warnings Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 25/41] net: freescale: select CONFIG_FIXED_PHY where needed Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 26/41] drm/amd/amdgpu: Update update_config() logic Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 27/41] IB/i40iw: Remove bogus call to netdev_master_upper_dev_get() Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 28/41] riscv: Fix unmet direct dependencies built based on SOC_VIRT Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 29/41] riscv: stacktrace: Fix undefined reference to `walk_stackframe' Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 30/41] riscv: Add pgprot_writecombine/device and PAGE_SHARED defination if NOMMU Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 31/41] clk: ti: am33xx: fix RTC clock parent Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 32/41] csky: Fixup msa highest 3 bits mask Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 33/41] csky: Fixup perf callchain unwind Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 34/41] csky: Fixup remove duplicate irq_disable Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 35/41] drm/meson: pm resume add return errno branch Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 36/41] hwmon: (nct7904) Fix incorrect range of temperature limit registers Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 37/41] riscv: pgtable: Fix __kernel_map_pages build error if NOMMU Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 38/41] cifs: Fix null pointer check in cifs_read Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 39/41] csky: Fixup raw_copy_from_user() Sasha Levin
2020-05-22 14:49 ` [PATCH AUTOSEL 5.6 40/41] samples: bpf: Fix build error Sasha Levin
2020-05-22 14:49 ` Sasha Levin [this message]
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=20200522144959.434379-41-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=davem@davemloft.net \
--cc=linux-kernel@vger.kernel.org \
--cc=madhuparnabhowmik10@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=stable@vger.kernel.org \
--cc=syzbot+bb82cafc737c002d11ca@syzkaller.appspotmail.com \
/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).