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Commit 1c11289b authored by Iwona Winiarska's avatar Iwona Winiarska
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peci: cpu: Fix use-after-free in adev_release()



When auxiliary_device_add() returns an error, auxiliary_device_uninit()
is called, which causes refcount for device to be decremented and
.release callback will be triggered.

Because adev_release() re-calls auxiliary_device_uninit(), it will cause
use-after-free:
[ 1269.455172] WARNING: CPU: 0 PID: 14267 at lib/refcount.c:28 refcount_warn_saturate+0x110/0x15
[ 1269.464007] refcount_t: underflow; use-after-free.

Reported-by: default avatarJianglei Nie <niejianglei2021@163.com>
Signed-off-by: default avatarIwona Winiarska <iwona.winiarska@intel.com>
Link: https://lore.kernel.org/r/20220705101501.298395-1-iwona.winiarska@intel.com
parent e79b548b
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