[PATCH 0/2] dm era: fix metadata_open NULL deref and error propagation

[ghuicao]

From: Cao Guanghui <caoguang...@kylinos.cn>

This series fixes two issues in dm-era:

1. metadata_open() returns NULL on kzalloc failure, but era_ctr() only
   checks IS_ERR(), causing a NULL pointer dereference.

2. era_ctr() replaces actual error codes from dm_get_device() and
   dm_set_target_max_io_len() with hardcoded -EINVAL, making diagnosis
   harder for users.

Both are straightforward fixes with no functional change for the
success path.

Cao Guanghui (2):
  dm era: fix NULL pointer dereference in metadata_open()
  dm era: fix error code propagation in era_ctr()

 drivers/md/dm-era-target.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

-- 
2.25.1