From: Ming Lei <ming.lei@redhat.com>
To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Martin K . Petersen" <martin.petersen@oracle.com>
Cc: Changhui Zhong <czhong@redhat.com>,
Yi Zhang <yi.zhang@redhat.com>, Ming Lei <ming.lei@redhat.com>
Subject: [PATCH 0/2] SCSI: fix race between releasing shost and unloading LLD module
Date: Thu, 30 Sep 2021 13:20:26 +0800 [thread overview]
Message-ID: <20210930052028.934747-1-ming.lei@redhat.com> (raw)
Hello,
Patch 1 allows put_device() to return if the device is really released.
Patch 2 fixes one race between releasing shost and unloading LLD module
by making sure that LLD module refcnt is dropped after the scsi device
is released.
Fix the kernel panic of 'BUG: unable to handle page fault for address'
reported by Changhui and Yi.
Ming Lei (2):
driver core: tell caller if the device/kboject is really released
scsi: core: put LLD module refcnt after SCSI device is released
drivers/base/core.c | 5 +++--
drivers/scsi/scsi.c | 14 ++++++++++++--
drivers/scsi/scsi_sysfs.c | 8 ++++++++
include/linux/device.h | 2 +-
include/linux/kobject.h | 2 +-
include/scsi/scsi_device.h | 1 +
lib/kobject.c | 5 +++--
7 files changed, 29 insertions(+), 8 deletions(-)
--
2.31.1
next reply other threads:[~2021-09-30 5:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-30 5:20 Ming Lei [this message]
2021-09-30 5:20 ` [PATCH 1/2] driver core: tell caller if the device/kboject is really released Ming Lei
2021-09-30 5:51 ` Greg Kroah-Hartman
2021-09-30 7:22 ` Ming Lei
2021-09-30 5:20 ` [PATCH 2/2] scsi: core: put LLD module refcnt after SCSI device is released Ming Lei
2021-09-30 5:57 ` Greg Kroah-Hartman
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