nbd: fix null-ptr-dereference while accessing 'nbd->config'

[PATCH -next 0/3] nbd: fix null-ptr-dereference while accessing 'nbd->config'

Zhong Jinghua posted 3 patches 2 years, 7 months ago

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drivers/block/nbd.c | 82 +++++++++++++++++++++++++++++----------------
1 file changed, 53 insertions(+), 29 deletions(-)

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[PATCH -next 0/3] nbd: fix null-ptr-dereference while accessing 'nbd->config'

Posted by Zhong Jinghua 2 years, 7 months ago

From: Zhong Jinghua <zhongjinghua@huawei.com>

nbd->config = config and refcount_set(&nbd->config_refs, 1) in
nbd_genl_connect may be out of order, causing config_refs to be set to 1
first, and then nbd_open accessing nbd->config reports a null pointer
reference.

Zhong Jinghua (3):
  nbd: fold nbd config initialization into nbd_alloc_config()
  nbd: factor out a helper to get nbd_config without holding
    'config_lock'
  nbd: fix null-ptr-dereference while accessing 'nbd->config'

 drivers/block/nbd.c | 82 +++++++++++++++++++++++++++++----------------
 1 file changed, 53 insertions(+), 29 deletions(-)

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2.31.1