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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org,
	Loris Fauster <loris.fauster@ttcontrol.com>,
	Alejandro Concepcion Rodriguez <alejandro@acoro.eu>,
	Marc Kleine-Budde <mkl@pengutronix.de>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.4 20/38] can: dev: can_restart(): post buffer from the right context
Date: Mon, 23 Nov 2020 13:22:06 +0100	[thread overview]
Message-ID: <20201123121805.280479467@linuxfoundation.org> (raw)
In-Reply-To: <20201123121804.306030358@linuxfoundation.org>

From: Alejandro Concepcion Rodriguez <alejandro@acoro.eu>

[ Upstream commit a1e654070a60d5d4f7cce59c38f4ca790bb79121 ]

netif_rx() is meant to be called from interrupt contexts. can_restart() may be
called by can_restart_work(), which is called from a worqueue, so it may run in
process context. Use netif_rx_ni() instead.

Fixes: 39549eef3587 ("can: CAN Network device driver and Netlink interface")
Co-developed-by: Loris Fauster <loris.fauster@ttcontrol.com>
Signed-off-by: Loris Fauster <loris.fauster@ttcontrol.com>
Signed-off-by: Alejandro Concepcion Rodriguez <alejandro@acoro.eu>
Link: https://lore.kernel.org/r/4e84162b-fb31-3a73-fa9a-9438b4bd5234@acoro.eu
[mkl: use netif_rx_ni() instead of netif_rx_any_context()]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
index 9579dae54af29..52110017fd401 100644
--- a/drivers/net/can/dev.c
+++ b/drivers/net/can/dev.c
@@ -525,7 +525,7 @@ static void can_restart(struct net_device *dev)
 	}
 	cf->can_id |= CAN_ERR_RESTARTED;
 
-	netif_rx(skb);
+	netif_rx_ni(skb);
 
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
-- 
2.27.0




  parent reply	other threads:[~2020-11-23 13:34 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-23 12:21 [PATCH 4.4 00/38] 4.4.246-rc1 review Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 01/38] ah6: fix error return code in ah6_input() Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 02/38] atm: nicstar: Unmap DMA on send error Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 03/38] net: b44: fix error return code in b44_init_one() Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 04/38] net: bridge: add missing counters to ndo_get_stats64 callback Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 05/38] netlabel: fix our progress tracking in netlbl_unlabel_staticlist() Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 06/38] netlabel: fix an uninitialized warning " Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 07/38] net/mlx4_core: Fix init_hca fields offset Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 08/38] net: x25: Increase refcnt of "struct x25_neigh" in x25_rx_call_request Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 09/38] qlcnic: fix error return code in qlcnic_83xx_restart_hw() Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 10/38] sctp: change to hold/put transport for proto_unreach_timer Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 11/38] net: usb: qmi_wwan: Set DTR quirk for MR400 Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 12/38] net: Have netpoll bring-up DSA management interface Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.4 13/38] pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to_irq Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 14/38] arm64: psci: Avoid printing in cpu_psci_cpu_die() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 15/38] MIPS: Fix BUILD_ROLLBACK_PROLOGUE for microMIPS Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 16/38] Input: adxl34x - clean up a data type in adxl34x_probe() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 17/38] arm: dts: imx6qdl-udoo: fix rgmii phy-mode for ksz9031 phy Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 18/38] ARM: dts: imx50-evk: Fix the chip select 1 IOMUX Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 19/38] perf lock: Dont free "lock_seq_stat" if read_count isnt zero Greg Kroah-Hartman
2020-11-23 12:22 ` Greg Kroah-Hartman [this message]
2020-11-23 12:22 ` [PATCH 4.4 21/38] can: peak_usb: fix potential integer overflow on shift of a int Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 22/38] can: m_can: m_can_handle_state_change(): fix state change Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 23/38] MIPS: Alchemy: Fix memleak in alchemy_clk_setup_cpu Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 24/38] regulator: ti-abb: Fix array out of bound read access on the first transition Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 25/38] libfs: fix error cast of negative value in simple_attr_write() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 26/38] [PATCH v4.4] powerpc/uaccess-flush: fix corenet64_smp_defconfig build Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 27/38] ALSA: ctl: fix error path at adding user-defined element set Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 28/38] ALSA: mixart: Fix mutex deadlock Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 29/38] tty: serial: imx: keep console clocks always on Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 30/38] efivarfs: fix memory leak in efivarfs_create() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 31/38] ext4: fix bogus warning in ext4_update_dx_flag() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 32/38] xtensa: disable preemption around cache alias management calls Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 33/38] mac80211: minstrel: remove deferred sampling code Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 34/38] mac80211: minstrel: fix tx status processing corner case Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 35/38] mac80211: allow driver to prevent two stations w/ same address Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 36/38] mac80211: free sta in sta_info_insert_finish() on errors Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 37/38] s390/cpum_sf.c: fix file permission for cpum_sfb_size Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.4 38/38] x86/microcode/intel: Check patch signature before saving microcode for early loading Greg Kroah-Hartman
2020-11-23 20:55 ` [PATCH 4.4 00/38] 4.4.246-rc1 review Jon Hunter
2020-11-23 22:34 ` Guenter Roeck
2020-11-24  0:33 ` Shuah Khan
2020-11-24  8:38 ` Naresh Kamboju
2020-11-24 19:53 ` Pavel Machek

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