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| Filename | Latest commit message | Latest commit date |
|---|---|---|
300e96e171
commit f72f4312d4388376fc8a1f6cf37cb21a0d41758b upstream.
Commit 028ddcac477b ("bcache: Remove unnecessary NULL point check in
node allocations") do the following change inside btree_gc_coalesce(),
31 @@ -1340,7 +1340,7 @@ static int btree_gc_coalesce(
32 memset(new_nodes, 0, sizeof(new_nodes));
33 closure_init_stack(&cl);
34
35 - while (nodes < GC_MERGE_NODES && !IS_ERR_OR_NULL(r[nodes].b))
36 + while (nodes < GC_MERGE_NODES && !IS_ERR(r[nodes].b))
37 keys += r[nodes++].keys;
38
39 blocks = btree_default_blocks(b->c) * 2 / 3;
At line 35 the original r[nodes].b is not always allocatored from
__bch_btree_node_alloc(), and possibly initialized as NULL pointer by
caller of btree_gc_coalesce(). Therefore the change at line 36 is not
correct.
This patch replaces the mistaken IS_ERR() by IS_ERR_OR_NULL() to avoid
potential issue.
Fixes: 028ddcac477b ("bcache: Remove unnecessary NULL point check in node allocations")
Cc: <stable@vger.kernel.org> # 6.5+
Cc: Zheng Wang <zyytlz.wz@163.com>
Signed-off-by: Coly Li <colyli@suse.de>
Link: https://lore.kernel.org/r/20231120052503.6122-9-colyli@suse.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.