From: Mukesh Ojha <mojha@codeaurora.org> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Kangjie Lu <kjlu@umn.edu> Cc: pakki001@umn.edu, Colin Ian King <colin.king@canonical.com>, Jia-Ju Bai <baijiaju1990@gmail.com>, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] usb: u132-hcd: fix potential NULL pointer dereference Date: Wed, 27 Mar 2019 19:27:30 +0530 [thread overview] Message-ID: <484452ec-d3a3-f663-158c-1308c297b8d1@codeaurora.org> (raw) In-Reply-To: <20190326044132.GA19677@kroah.com> Please change the patch version in subject while sending patch. On 3/26/2019 10:11 AM, Greg Kroah-Hartman wrote: > On Tue, Mar 19, 2019 at 12:34:06PM -0500, Kangjie Lu wrote: >> In case create_singlethread_workqueue fails, the fix notifies >> callers the error to avoid potential NULL pointer dereferences. >> >> Signed-off-by: Kangjie Lu <kjlu@umn.edu> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org> -Mukesh >> --- >> removed "unlikely" >> --- >> drivers/usb/host/u132-hcd.c | 2 ++ >> 1 file changed, 2 insertions(+) >> >> diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c >> index 934584f0a20a..6d5b532b03f8 100644 >> --- a/drivers/usb/host/u132-hcd.c >> +++ b/drivers/usb/host/u132-hcd.c >> @@ -3203,6 +3203,8 @@ static int __init u132_hcd_init(void) >> return -ENODEV; >> printk(KERN_INFO "driver %s\n", hcd_name); >> workqueue = create_singlethread_workqueue("u132"); >> + if (!workqueue) >> + return -ENOMEM; >> retval = platform_driver_register(&u132_platform_driver); >> return retval; > if platform_driver_register() fails, shouldn't you clean up the > workqueue? That can be a separate patch, that's not your fault here :) I have taken care of it. https://lore.kernel.org/patchwork/patch/1054800/ > > thanks, > > greg k-h
WARNING: multiple messages have this Message-ID (diff)
From: Mukesh Ojha <mojha@codeaurora.org> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Kangjie Lu <kjlu@umn.edu> Cc: pakki001@umn.edu, Colin Ian King <colin.king@canonical.com>, Jia-Ju Bai <baijiaju1990@gmail.com>, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: usb: u132-hcd: fix potential NULL pointer dereference Date: Wed, 27 Mar 2019 19:27:30 +0530 [thread overview] Message-ID: <484452ec-d3a3-f663-158c-1308c297b8d1@codeaurora.org> (raw) Please change the patch version in subject while sending patch. On 3/26/2019 10:11 AM, Greg Kroah-Hartman wrote: > On Tue, Mar 19, 2019 at 12:34:06PM -0500, Kangjie Lu wrote: >> In case create_singlethread_workqueue fails, the fix notifies >> callers the error to avoid potential NULL pointer dereferences. >> >> Signed-off-by: Kangjie Lu <kjlu@umn.edu> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org> -Mukesh >> --- >> removed "unlikely" >> --- >> drivers/usb/host/u132-hcd.c | 2 ++ >> 1 file changed, 2 insertions(+) >> >> diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c >> index 934584f0a20a..6d5b532b03f8 100644 >> --- a/drivers/usb/host/u132-hcd.c >> +++ b/drivers/usb/host/u132-hcd.c >> @@ -3203,6 +3203,8 @@ static int __init u132_hcd_init(void) >> return -ENODEV; >> printk(KERN_INFO "driver %s\n", hcd_name); >> workqueue = create_singlethread_workqueue("u132"); >> + if (!workqueue) >> + return -ENOMEM; >> retval = platform_driver_register(&u132_platform_driver); >> return retval; > if platform_driver_register() fails, shouldn't you clean up the > workqueue? That can be a separate patch, that's not your fault here :) I have taken care of it. https://lore.kernel.org/patchwork/patch/1054800/ > > thanks, > > greg k-h
next prev parent reply other threads:[~2019-03-27 13:57 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-03-14 7:27 [PATCH] usb: u132-hcd: fix potential NULL pointer dereference Kangjie Lu 2019-03-14 7:27 ` Kangjie Lu 2019-03-19 13:56 ` [PATCH] " Greg Kroah-Hartman 2019-03-19 13:56 ` Greg Kroah-Hartman 2019-03-19 17:20 ` [PATCH] " Kangjie Lu 2019-03-19 17:20 ` Kangjie Lu 2019-03-19 17:34 ` [PATCH] " Kangjie Lu 2019-03-19 17:34 ` Kangjie Lu 2019-03-26 4:41 ` [PATCH] " Greg Kroah-Hartman 2019-03-26 4:41 ` Greg Kroah-Hartman 2019-03-27 13:57 ` Mukesh Ojha [this message] 2019-03-27 13:57 ` Mukesh Ojha
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