From: Ross Zwisler <ross.zwisler@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: Theodore Ts'o <tytso@mit.edu>,
Matthew Wilcox <mawilcox@microsoft.com>,
Dave Chinner <david@fromorbit.com>,
linux-nvdimm@lists.01.org, Christoph Hellwig <hch@lst.de>,
linux-xfs@vger.kernel.org, linux-mm@kvack.org,
Andreas Dilger <adilger.kernel@dilger.ca>,
Alexander Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org, Jan Kara <jack@suse.cz>,
linux-ext4@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH v9 05/16] dax: remove the last BUG_ON() from fs/dax.c
Date: Tue, 1 Nov 2016 13:54:07 -0600 [thread overview]
Message-ID: <1478030058-1422-6-git-send-email-ross.zwisler@linux.intel.com> (raw)
In-Reply-To: <1478030058-1422-1-git-send-email-ross.zwisler@linux.intel.com>
Don't take down the kernel if we get an invalid 'from' and 'length'
argument pair. Just warn once and return an error.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
---
fs/dax.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/dax.c b/fs/dax.c
index e52e754..219fa2b 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1194,7 +1194,8 @@ int dax_zero_page_range(struct inode *inode, loff_t from, unsigned length,
/* Block boundary? Nothing to do */
if (!length)
return 0;
- BUG_ON((offset + length) > PAGE_SIZE);
+ if (WARN_ON_ONCE((offset + length) > PAGE_SIZE))
+ return -EINVAL;
memset(&bh, 0, sizeof(bh));
bh.b_bdev = inode->i_sb->s_bdev;
--
2.7.4
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WARNING: multiple messages have this Message-ID (diff)
From: Ross Zwisler <ross.zwisler@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>,
"Theodore Ts'o" <tytso@mit.edu>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Hellwig <hch@lst.de>,
Dan Williams <dan.j.williams@intel.com>,
Dave Chinner <david@fromorbit.com>, Jan Kara <jack@suse.cz>,
Matthew Wilcox <mawilcox@microsoft.com>,
linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, linux-nvdimm@ml01.01.org,
linux-xfs@vger.kernel.org
Subject: [PATCH v9 05/16] dax: remove the last BUG_ON() from fs/dax.c
Date: Tue, 1 Nov 2016 13:54:07 -0600 [thread overview]
Message-ID: <1478030058-1422-6-git-send-email-ross.zwisler@linux.intel.com> (raw)
In-Reply-To: <1478030058-1422-1-git-send-email-ross.zwisler@linux.intel.com>
Don't take down the kernel if we get an invalid 'from' and 'length'
argument pair. Just warn once and return an error.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
---
fs/dax.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/dax.c b/fs/dax.c
index e52e754..219fa2b 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1194,7 +1194,8 @@ int dax_zero_page_range(struct inode *inode, loff_t from, unsigned length,
/* Block boundary? Nothing to do */
if (!length)
return 0;
- BUG_ON((offset + length) > PAGE_SIZE);
+ if (WARN_ON_ONCE((offset + length) > PAGE_SIZE))
+ return -EINVAL;
memset(&bh, 0, sizeof(bh));
bh.b_bdev = inode->i_sb->s_bdev;
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Ross Zwisler <ross.zwisler@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>,
"Theodore Ts'o" <tytso@mit.edu>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Hellwig <hch@lst.de>,
Dan Williams <dan.j.williams@intel.com>,
Dave Chinner <david@fromorbit.com>, Jan Kara <jack@suse.cz>,
Matthew Wilcox <mawilcox@microsoft.com>,
linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, linux-nvdimm@lists.01.org,
linux-xfs@vger.kernel.org
Subject: [PATCH v9 05/16] dax: remove the last BUG_ON() from fs/dax.c
Date: Tue, 1 Nov 2016 13:54:07 -0600 [thread overview]
Message-ID: <1478030058-1422-6-git-send-email-ross.zwisler@linux.intel.com> (raw)
In-Reply-To: <1478030058-1422-1-git-send-email-ross.zwisler@linux.intel.com>
Don't take down the kernel if we get an invalid 'from' and 'length'
argument pair. Just warn once and return an error.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
---
fs/dax.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/dax.c b/fs/dax.c
index e52e754..219fa2b 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1194,7 +1194,8 @@ int dax_zero_page_range(struct inode *inode, loff_t from, unsigned length,
/* Block boundary? Nothing to do */
if (!length)
return 0;
- BUG_ON((offset + length) > PAGE_SIZE);
+ if (WARN_ON_ONCE((offset + length) > PAGE_SIZE))
+ return -EINVAL;
memset(&bh, 0, sizeof(bh));
bh.b_bdev = inode->i_sb->s_bdev;
--
2.7.4
--
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WARNING: multiple messages have this Message-ID (diff)
From: Ross Zwisler <ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Theodore Ts'o <tytso-3s7WtUTddSA@public.gmane.org>,
Matthew Wilcox <mawilcox-0li6OtcxBFHby3iVrkZq2A@public.gmane.org>,
Dave Chinner <david-FqsqvQoI3Ljby3iVrkZq2A@public.gmane.org>,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org,
Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>,
linux-xfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
Andreas Dilger
<adilger.kernel-m1MBpc4rdrD3fQ9qLvQP4Q@public.gmane.org>,
Alexander Viro
<viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org>,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>,
linux-ext4-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Subject: [PATCH v9 05/16] dax: remove the last BUG_ON() from fs/dax.c
Date: Tue, 1 Nov 2016 13:54:07 -0600 [thread overview]
Message-ID: <1478030058-1422-6-git-send-email-ross.zwisler@linux.intel.com> (raw)
In-Reply-To: <1478030058-1422-1-git-send-email-ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Don't take down the kernel if we get an invalid 'from' and 'length'
argument pair. Just warn once and return an error.
Signed-off-by: Ross Zwisler <ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Reviewed-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Reviewed-by: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
---
fs/dax.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/dax.c b/fs/dax.c
index e52e754..219fa2b 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1194,7 +1194,8 @@ int dax_zero_page_range(struct inode *inode, loff_t from, unsigned length,
/* Block boundary? Nothing to do */
if (!length)
return 0;
- BUG_ON((offset + length) > PAGE_SIZE);
+ if (WARN_ON_ONCE((offset + length) > PAGE_SIZE))
+ return -EINVAL;
memset(&bh, 0, sizeof(bh));
bh.b_bdev = inode->i_sb->s_bdev;
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Ross Zwisler <ross.zwisler@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>,
Theodore Ts'o <tytso@mit.edu>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Hellwig <hch@lst.de>,
Dan Williams <dan.j.williams@intel.com>,
Dave Chinner <david@fromorbit.com>, Jan Kara <jack@suse.cz>,
Matthew Wilcox <mawilcox@microsoft.com>,
linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, linux-nvdimm@lists.01.org,
linux-xfs@vger.kernel.org
Subject: [PATCH v9 05/16] dax: remove the last BUG_ON() from fs/dax.c
Date: Tue, 1 Nov 2016 13:54:07 -0600 [thread overview]
Message-ID: <1478030058-1422-6-git-send-email-ross.zwisler@linux.intel.com> (raw)
In-Reply-To: <1478030058-1422-1-git-send-email-ross.zwisler@linux.intel.com>
Don't take down the kernel if we get an invalid 'from' and 'length'
argument pair. Just warn once and return an error.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
---
fs/dax.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/dax.c b/fs/dax.c
index e52e754..219fa2b 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1194,7 +1194,8 @@ int dax_zero_page_range(struct inode *inode, loff_t from, unsigned length,
/* Block boundary? Nothing to do */
if (!length)
return 0;
- BUG_ON((offset + length) > PAGE_SIZE);
+ if (WARN_ON_ONCE((offset + length) > PAGE_SIZE))
+ return -EINVAL;
memset(&bh, 0, sizeof(bh));
bh.b_bdev = inode->i_sb->s_bdev;
--
2.7.4
next prev parent reply other threads:[~2016-11-01 19:54 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-01 19:54 [PATCH v9 00/16] re-enable DAX PMD support Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 01/16] ext4: tell DAX the size of allocation holes Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 02/16] dax: remove buffer_size_valid() Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 03/16] ext2: remove support for DAX PMD faults Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 04/16] dax: make 'wait_table' global variable static Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler [this message]
2016-11-01 19:54 ` [PATCH v9 05/16] dax: remove the last BUG_ON() from fs/dax.c Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 06/16] dax: consistent variable naming for DAX entries Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 07/16] dax: coordinate locking for offsets in PMD range Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 08/16] dax: remove dax_pmd_fault() Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 09/16] dax: correct dax iomap code namespace Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 10/16] dax: add dax_iomap_sector() helper function Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 11/16] dax: dax_iomap_fault() needs to call iomap_end() Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 12/16] dax: move RADIX_DAX_* defines to dax.h Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 13/16] dax: move put_(un)locked_mapping_entry() in dax.c Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 14/16] dax: add struct iomap based DAX PMD support Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 15/16] xfs: use struct iomap based DAX PMD fault path Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` [PATCH v9 16/16] dax: remove "depends on BROKEN" from FS_DAX_PMD Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-01 19:54 ` Ross Zwisler
2016-11-03 1:58 ` [PATCH v9 00/16] re-enable DAX PMD support Dave Chinner
2016-11-03 1:58 ` Dave Chinner
2016-11-03 1:58 ` Dave Chinner
2016-11-03 1:58 ` Dave Chinner
2016-11-03 17:51 ` Ross Zwisler
2016-11-03 17:51 ` Ross Zwisler
2016-11-03 17:51 ` Ross Zwisler
2016-11-03 17:51 ` Ross Zwisler
2016-11-03 21:16 ` Dave Chinner
2016-11-03 21:16 ` Dave Chinner
2016-11-03 21:16 ` Dave Chinner
2016-11-03 21:16 ` Dave Chinner
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