Zheng WangandGreg Kroah-Hartman 7ecea5ce3d 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>

2023-07-19 16:22:10 +02:00

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alloc.c

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bcache_ondisk.h

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bcache.h

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bset.c

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bset.h

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btree.c

bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent

2023-07-19 16:22:10 +02:00

btree.h

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closure.c

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closure.h

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debug.c

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debug.h

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extents.c

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extents.h

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features.c

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features.h

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io.c

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journal.c

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journal.h

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Kconfig

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Makefile

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movinggc.c

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request.c

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request.h

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stats.c

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stats.h

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super.c

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sysfs.c

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sysfs.h

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trace.c

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util.c

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util.h

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writeback.c

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writeback.h

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