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linux/drivers/md/bcache
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Zheng Wang f67b0e3081 bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent 
commit 80fca8a10b upstream.

In some specific situations, the return value of __bch_btree_node_alloc
may be NULL. This may lead to a potential NULL pointer dereference in
caller function like a calling chain :
btree_split->bch_btree_node_alloc->__bch_btree_node_alloc.

Fix it by initializing the return value in __bch_btree_node_alloc.

Fixes: cafe563591 ("bcache: A block layer cache")
Cc: stable@vger.kernel.org
Signed-off-by: Zheng Wang <zyytlz.wz@163.com>
Signed-off-by: Coly Li <colyli@suse.de>
Link: https://lore.kernel.org/r/20230615121223.22502-6-colyli@suse.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2023-07-23 13:47:33 +02:00
..
alloc.c bcache: remove PTR_CACHE 2021-04-11 08:37:55 -06:00
bcache.h bcache: remove bcache device self-defined readahead 2021-06-08 15:06:03 -06:00
bset.c bcache: Avoid comma separated statements 2021-02-10 08:06:00 -07:00
bset.h bcache: explicity type cast in bset_bkey_last() 2020-02-01 07:55:39 -07:00
btree.c bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent 2023-07-23 13:47:33 +02:00
btree.h bcache: fixup btree_cache_wait list damage 2023-07-23 13:47:32 +02:00
closure.c bcache: Convert to DEFINE_SHOW_ATTRIBUTE 2020-10-02 14:25:29 -06:00
closure.h bcache: fix typo in code comments of closure_return_with_destructor() 2018-10-08 08:19:43 -06:00
debug.c bcache: fix a regression of code compiling failure in debug.c 2021-04-11 08:37:56 -06:00
debug.h bcache: add identifier names to arguments of function definitions 2018-08-11 15:46:41 -06:00
extents.c bcache: remove PTR_CACHE 2021-04-11 08:37:55 -06:00
extents.h bcache: add identifier names to arguments of function definitions 2018-08-11 15:46:41 -06:00
features.c bcache: use NULL instead of using plain integer as pointer 2021-04-11 08:37:56 -06:00
features.h bcache: only check feature sets when sb->version >= BCACHE_SB_VERSION_CDEV_WITH_FEATURES 2021-01-28 07:35:07 -07:00
io.c bcache: remove PTR_CACHE 2021-04-11 08:37:55 -06:00
journal.c bcache: avoid journal no-space deadlock by reserving 1 journal bucket 2022-06-09 10:23:29 +02:00
journal.h bcache: avoid journal no-space deadlock by reserving 1 journal bucket 2022-06-09 10:23:29 +02:00
Kconfig block: make the block holder code optional 2021-08-09 11:50:42 -06:00
Makefile bcache: add sysfs file to display feature sets information of cache set 2020-07-25 07:38:21 -06:00
movinggc.c bcache: remove for_each_cache() 2020-10-02 14:25:29 -06:00
request.c md: bcache: check the return value of kzalloc() in detached_dev_do_request() 2022-06-09 10:23:32 +02:00
request.h block: move ->make_request_fn to struct block_device_operations 2020-07-01 07:27:24 -06:00
stats.c bcache: remove bcache device self-defined readahead 2021-06-08 15:06:03 -06:00
stats.h bcache: remove bcache device self-defined readahead 2021-06-08 15:06:03 -06:00
super.c bcache: Remove unnecessary NULL point check in node allocations 2023-07-23 13:47:32 +02:00
sysfs.c bcache: remove bcache device self-defined readahead 2021-06-08 15:06:03 -06:00
sysfs.h bcache: add sysfs_strtoul_bool() for setting bit-field variables 2019-02-09 07:18:32 -07:00
trace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
util.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
util.h block: move some macros to blkdev.h 2021-08-11 19:40:28 -06:00
writeback.c bcache: fixup btree_cache_wait list damage 2023-07-23 13:47:32 +02:00
writeback.h bcache: improve multithreaded bch_sectors_dirty_init() 2022-06-09 10:23:28 +02:00