From: Chandan Babu R <chandan.babu@oracle.com>
To: "Darrick J. Wong" <djwong@kernel.org>
Cc: chandanrlinux@gmail.com, linux-xfs@vger.kernel.org
Subject: Re: [PATCH 06/14] xfs: check that bc_nlevels never overflows
Date: Mon, 20 Sep 2021 15:24:41 +0530 [thread overview]
Message-ID: <87mto77ese.fsf@debian-BULLSEYE-live-builder-AMD64> (raw)
In-Reply-To: <163192858276.416199.6204001049315596078.stgit@magnolia>
On 18 Sep 2021 at 06:59, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@kernel.org>
>
> Warn if we ever bump nlevels higher than the allowed maximum cursor
> height.
Looks good.
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
>
> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
> ---
> fs/xfs/libxfs/xfs_btree.c | 2 ++
> fs/xfs/libxfs/xfs_btree_staging.c | 2 ++
> 2 files changed, 4 insertions(+)
>
>
> diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c
> index b0cce0932f02..bc4e49f0456a 100644
> --- a/fs/xfs/libxfs/xfs_btree.c
> +++ b/fs/xfs/libxfs/xfs_btree.c
> @@ -2933,6 +2933,7 @@ xfs_btree_new_iroot(
> be16_add_cpu(&block->bb_level, 1);
> xfs_btree_set_numrecs(block, 1);
> cur->bc_nlevels++;
> + ASSERT(cur->bc_nlevels <= XFS_BTREE_MAXLEVELS);
> cur->bc_ptrs[level + 1] = 1;
>
> kp = xfs_btree_key_addr(cur, 1, block);
> @@ -3096,6 +3097,7 @@ xfs_btree_new_root(
> xfs_btree_setbuf(cur, cur->bc_nlevels, nbp);
> cur->bc_ptrs[cur->bc_nlevels] = nptr;
> cur->bc_nlevels++;
> + ASSERT(cur->bc_nlevels <= XFS_BTREE_MAXLEVELS);
> *stat = 1;
> return 0;
> error0:
> diff --git a/fs/xfs/libxfs/xfs_btree_staging.c b/fs/xfs/libxfs/xfs_btree_staging.c
> index ac9e80152b5c..26143297bb7b 100644
> --- a/fs/xfs/libxfs/xfs_btree_staging.c
> +++ b/fs/xfs/libxfs/xfs_btree_staging.c
> @@ -703,6 +703,7 @@ xfs_btree_bload_compute_geometry(
> * block-based btree level.
> */
> cur->bc_nlevels++;
> + ASSERT(cur->bc_nlevels <= XFS_BTREE_MAXLEVELS);
> xfs_btree_bload_level_geometry(cur, bbl, level,
> nr_this_level, &avg_per_block,
> &level_blocks, &dontcare64);
> @@ -718,6 +719,7 @@ xfs_btree_bload_compute_geometry(
>
> /* Otherwise, we need another level of btree. */
> cur->bc_nlevels++;
> + ASSERT(cur->bc_nlevels <= XFS_BTREE_MAXLEVELS);
> }
>
> nr_blocks += level_blocks;
--
chandan
next prev parent reply other threads:[~2021-09-20 10:10 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-18 1:29 [PATCHSET RFC chandan 00/14] xfs: support dynamic btree cursor height Darrick J. Wong
2021-09-18 1:29 ` [PATCH 01/14] xfs: remove xfs_btree_cur_t typedef Darrick J. Wong
2021-09-20 9:53 ` Chandan Babu R
2021-09-21 8:36 ` Christoph Hellwig
2021-09-18 1:29 ` [PATCH 02/14] xfs: don't allocate scrub contexts on the stack Darrick J. Wong
2021-09-20 9:53 ` Chandan Babu R
2021-09-20 17:39 ` Darrick J. Wong
2021-09-21 8:39 ` Christoph Hellwig
2021-09-18 1:29 ` [PATCH 03/14] xfs: dynamically allocate btree scrub context structure Darrick J. Wong
2021-09-20 9:53 ` Chandan Babu R
2021-09-21 8:43 ` Christoph Hellwig
2021-09-22 16:17 ` Darrick J. Wong
2021-09-18 1:29 ` [PATCH 04/14] xfs: stricter btree height checking when looking for errors Darrick J. Wong
2021-09-20 9:54 ` Chandan Babu R
2021-09-18 1:29 ` [PATCH 05/14] xfs: stricter btree height checking when scanning for btree roots Darrick J. Wong
2021-09-20 9:54 ` Chandan Babu R
2021-09-18 1:29 ` [PATCH 06/14] xfs: check that bc_nlevels never overflows Darrick J. Wong
2021-09-20 9:54 ` Chandan Babu R [this message]
2021-09-21 8:44 ` Christoph Hellwig
2021-09-18 1:29 ` [PATCH 07/14] xfs: support dynamic btree cursor heights Darrick J. Wong
2021-09-20 9:55 ` Chandan Babu R
2021-09-21 8:49 ` Christoph Hellwig
2021-09-18 1:29 ` [PATCH 08/14] xfs: refactor btree cursor allocation function Darrick J. Wong
2021-09-20 9:55 ` Chandan Babu R
2021-09-21 8:53 ` Christoph Hellwig
2021-09-18 1:29 ` [PATCH 09/14] xfs: fix maxlevels comparisons in the btree staging code Darrick J. Wong
2021-09-20 9:55 ` Chandan Babu R
2021-09-21 8:56 ` Christoph Hellwig
2021-09-22 15:59 ` Darrick J. Wong
2021-09-18 1:30 ` [PATCH 10/14] xfs: encode the max btree height in the cursor Darrick J. Wong
2021-09-20 9:55 ` Chandan Babu R
2021-09-21 8:57 ` Christoph Hellwig
2021-09-18 1:30 ` [PATCH 11/14] xfs: dynamically allocate cursors based on maxlevels Darrick J. Wong
2021-09-20 9:56 ` Chandan Babu R
2021-09-20 23:06 ` Dave Chinner
2021-09-20 23:36 ` Dave Chinner
2021-09-21 9:03 ` Christoph Hellwig
2021-09-22 18:55 ` Darrick J. Wong
2021-09-22 17:38 ` Darrick J. Wong
2021-09-22 23:10 ` Dave Chinner
2021-09-23 1:58 ` Darrick J. Wong
2021-09-23 5:56 ` Chandan Babu R
2021-09-18 1:30 ` [PATCH 12/14] xfs: compute actual maximum btree height for critical reservation calculation Darrick J. Wong
2021-09-20 9:56 ` Chandan Babu R
2021-09-18 1:30 ` [PATCH 13/14] xfs: compute the maximum height of the rmap btree when reflink enabled Darrick J. Wong
2021-09-20 9:56 ` Chandan Babu R
2021-09-18 1:30 ` [PATCH 14/14] xfs: kill XFS_BTREE_MAXLEVELS Darrick J. Wong
2021-09-20 9:57 ` Chandan Babu R
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87mto77ese.fsf@debian-BULLSEYE-live-builder-AMD64 \
--to=chandan.babu@oracle.com \
--cc=chandanrlinux@gmail.com \
--cc=djwong@kernel.org \
--cc=linux-xfs@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox