bcache: fix cache_set_flush() NULL pointer dereference on OOM

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commit f8b11260a4 upstream.

When bch_cache_set_alloc() fails to kzalloc the cache_set, the
asyncronous closure handling tries to dereference a cache_set that
hadn't yet been allocated inside of cache_set_flush() which is called
by __cache_set_unregister() during cleanup.  This appears to happen only
during an OOM condition on bcache_register.

Signed-off-by: Eric Wheeler <bcache@linux.ewheeler.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Eric Wheeler 2016-03-07 15:17:50 -08:00 • committed by Greg Kroah-Hartman

parent b58e781068

commit ca75edc440

1 changed files with 3 additions and 0 deletions

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drivers/md/bcache/super.c

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