From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Yu Zhao <yuzhao@google.com>,
"David S . Miller" <davem@davemloft.net>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 4.9 36/38] net/usb: cancel pending work when unbinding smsc75xx
Date: Tue, 16 Oct 2018 00:15:20 -0400 [thread overview]
Message-ID: <20181016041522.135789-36-sashal@kernel.org> (raw)
In-Reply-To: <20181016041522.135789-1-sashal@kernel.org>
From: Yu Zhao <yuzhao@google.com>
[ Upstream commit f7b2a56e1f3dcbdb4cf09b2b63e859ffe0e09df8 ]
Cancel pending work before freeing smsc75xx private data structure
during binding. This fixes the following crash in the driver:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
IP: mutex_lock+0x2b/0x3f
<snipped>
Workqueue: events smsc75xx_deferred_multicast_write [smsc75xx]
task: ffff8caa83e85700 task.stack: ffff948b80518000
RIP: 0010:mutex_lock+0x2b/0x3f
<snipped>
Call Trace:
smsc75xx_deferred_multicast_write+0x40/0x1af [smsc75xx]
process_one_work+0x18d/0x2fc
worker_thread+0x1a2/0x269
? pr_cont_work+0x58/0x58
kthread+0xfa/0x10a
? pr_cont_work+0x58/0x58
? rcu_read_unlock_sched_notrace+0x48/0x48
ret_from_fork+0x22/0x40
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/usb/smsc75xx.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c
index f7aacd73b5a8..977d9c772554 100644
--- a/drivers/net/usb/smsc75xx.c
+++ b/drivers/net/usb/smsc75xx.c
@@ -1521,6 +1521,7 @@ static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf)
{
struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
if (pdata) {
+ cancel_work_sync(&pdata->set_multicast);
netif_dbg(dev, ifdown, dev->net, "free pdata\n");
kfree(pdata);
pdata = NULL;
--
2.17.1
next prev parent reply other threads:[~2018-10-16 4:16 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-16 4:14 [PATCH AUTOSEL 4.9 01/38] xfrm: Validate address prefix lengths in the xfrm selector Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 02/38] xfrm6: call kfree_skb when skb is toobig Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 03/38] mac80211: Always report TX status Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 04/38] cfg80211: reg: Init wiphy_idx in regulatory_hint_core() Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 05/38] mac80211: fix pending queue hang due to TX_DROP Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 06/38] cfg80211: Address some corner cases in scan result channel updating Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 07/38] mac80211: TDLS: fix skb queue/priority assignment Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 08/38] ARM: 8799/1: mm: fix pci_ioremap_io() offset check Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 09/38] xfrm: validate template mode Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 10/38] ARM: dts: BCM63xx: Fix incorrect interrupt specifiers Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 11/38] net: macb: Clean 64b dma addresses if they are not detected Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 12/38] net: hns: fix for unmapping problem when SMMU is on Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 13/38] soc: fsl: qbman: qman: avoid allocating from non existing gen_pool Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 14/38] soc: fsl: qe: Fix copy/paste bug in ucc_get_tdm_sync_shift() Sasha Levin
2018-10-16 4:14 ` [PATCH AUTOSEL 4.9 15/38] nl80211: Fix possible Spectre-v1 for NL80211_TXRATE_HT Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 16/38] mac80211_hwsim: do not omit multicast announce of first added radio Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 17/38] Bluetooth: SMP: fix crash in unpairing Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 18/38] pxa168fb: prepare the clock Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 19/38] qed: Avoid implicit enum conversion in qed_roce_mode_to_flavor Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 20/38] bonding: avoid possible dead-lock Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 21/38] qed: Avoid constant logical operation warning in qed_vf_pf_acquire Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 22/38] bnxt_en: Fix TX timeout during netpoll Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 23/38] asix: Check for supported Wake-on-LAN modes Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 24/38] ax88179_178a: " Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 25/38] lan78xx: " Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 26/38] sr9800: " Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 27/38] r8152: Check for supported Wake-on-LAN Modes Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 28/38] smsc75xx: Check for Wake-on-LAN modes Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 29/38] smsc95xx: " Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 30/38] qlcnic: fix Tx descriptor corruption on 82xx devices Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 31/38] i2c: i2c-scmi: fix for i2c_smbus_write_block_data Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 32/38] perf/ring_buffer: Prevent concurent ring buffer access Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 33/38] perf/x86/intel/uncore: Fix PCI BDF address of M3UPI on SKX Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 34/38] net: fec: fix rare tx timeout Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 35/38] declance: Fix continuation with the adapter identification message Sasha Levin
2018-10-16 4:15 ` Sasha Levin [this message]
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 37/38] net: cxgb3_main: fix a missing-check bug Sasha Levin
2018-10-16 4:15 ` [PATCH AUTOSEL 4.9 38/38] mm/vmstat.c: fix outdated vmstat_text Sasha Levin
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