From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Damien Le Moal <damien.lemoal@wdc.com>,
kernel test robot <lkp@intel.com>, Hannes Reinecke <hare@suse.de>,
Jens Axboe <axboe@kernel.dk>, Sasha Levin <sashal@kernel.org>,
linux-ide@vger.kernel.org
Subject: [PATCH AUTOSEL 4.14 11/17] libata: fix ata_host_start()
Date: Sun, 5 Sep 2021 21:23:46 -0400 [thread overview]
Message-ID: <20210906012352.930954-11-sashal@kernel.org> (raw)
In-Reply-To: <20210906012352.930954-1-sashal@kernel.org>
From: Damien Le Moal <damien.lemoal@wdc.com>
[ Upstream commit 355a8031dc174450ccad2a61c513ad7222d87a97 ]
The loop on entry of ata_host_start() may not initialize host->ops to a
non NULL value. The test on the host_stop field of host->ops must then
be preceded by a check that host->ops is not NULL.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20210816014456.2191776-3-damien.lemoal@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/libata-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index c28b0ca24907..0f0ed04de886 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -6339,7 +6339,7 @@ int ata_host_start(struct ata_host *host)
have_stop = 1;
}
- if (host->ops->host_stop)
+ if (host->ops && host->ops->host_stop)
have_stop = 1;
if (have_stop) {
--
2.30.2
next prev parent reply other threads:[~2021-09-06 1:32 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-06 1:23 [PATCH AUTOSEL 4.14 01/17] regmap: fix the offset of register error log Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 02/17] crypto: mxs-dcp - Check for DMA mapping errors Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 03/17] power: supply: axp288_fuel_gauge: Report register-address on readb / writeb errors Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 04/17] crypto: omap-sham - clear dma flags only after omap_sham_update_dma_stop() Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 05/17] posix-cpu-timers: Force next expiration recalc after itimer reset Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 06/17] udf: Check LVID earlier Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 07/17] isofs: joliet: Fix iocharset=utf8 mount option Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 08/17] nvme-rdma: don't update queue count when failing to set io queues Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 09/17] power: supply: max17042_battery: fix typo in MAx17042_TOFF Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 10/17] s390/cio: add dev_busid sysfs entry for each subchannel Sasha Levin
2021-09-06 1:23 ` Sasha Levin [this message]
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 12/17] crypto: qat - do not ignore errors from enable_vf2pf_comms() Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 13/17] crypto: qat - handle both source of interrupt in VF ISR Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 14/17] crypto: qat - fix reuse of completion variable Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 15/17] crypto: qat - fix naming for init/shutdown VF to PF notifications Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 16/17] crypto: qat - do not export adf_iov_putmsg() Sasha Levin
2021-09-06 1:23 ` [PATCH AUTOSEL 4.14 17/17] udf_get_extendedattr() had no boundary checks Sasha Levin
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