From: <gregkh@linuxfoundation.org>
To: jack@suse.cz, alexander.levin@verizon.com, axboe@fb.com,
dan.carpenter@oracle.com, gregkh@linuxfoundation.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "axonram: Fix gendisk handling" has been added to the 4.4-stable tree
Date: Tue, 12 Dec 2017 13:43:43 +0100 [thread overview]
Message-ID: <15130826233911@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
axonram: Fix gendisk handling
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
axonram-fix-gendisk-handling.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From foo@baz Tue Dec 12 13:38:50 CET 2017
From: Jan Kara <jack@suse.cz>
Date: Wed, 8 Mar 2017 14:56:05 +0100
Subject: axonram: Fix gendisk handling
From: Jan Kara <jack@suse.cz>
[ Upstream commit 672a2c87c83649fb0167202342ce85af9a3b4f1c ]
It is invalid to call del_gendisk() when disk->queue is NULL. Fix error
handling in axon_ram_probe() to avoid doing that.
Also del_gendisk() does not drop a reference to gendisk allocated by
alloc_disk(). That has to be done by put_disk(). Add that call where
needed.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/sysdev/axonram.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/arch/powerpc/sysdev/axonram.c
+++ b/arch/powerpc/sysdev/axonram.c
@@ -276,7 +276,9 @@ failed:
if (bank->disk->major > 0)
unregister_blkdev(bank->disk->major,
bank->disk->disk_name);
- del_gendisk(bank->disk);
+ if (bank->disk->flags & GENHD_FL_UP)
+ del_gendisk(bank->disk);
+ put_disk(bank->disk);
}
device->dev.platform_data = NULL;
if (bank->io_addr != 0)
@@ -301,6 +303,7 @@ axon_ram_remove(struct platform_device *
device_remove_file(&device->dev, &dev_attr_ecc);
free_irq(bank->irq_id, device);
del_gendisk(bank->disk);
+ put_disk(bank->disk);
iounmap((void __iomem *) bank->io_addr);
kfree(bank);
Patches currently in stable-queue which might be from jack@suse.cz are
queue-4.4/axonram-fix-gendisk-handling.patch
reply other threads:[~2017-12-12 12:43 UTC|newest]
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