| commit | bba3d2daa8a9bc888902275401f15ef48fcdd378 | [log] [tgz] |
|---|---|---|
| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | Mon Dec 31 00:49:36 2018 +0100 |
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | Mon Dec 31 00:49:36 2018 +0100 |
| tree | 82fc0c9b852be399200d374ed3eb0f91ce9811fe | |
| parent | e01b5781958de08942af341ce26768d5e0fbcdf5 [diff] |
rtc: nvmem: fix possible use after free
In cas of probe failure, devres may free the memory allocated for
rtc->nvram before devm_rtc_release_device() is called. This leads to
rtc_nvram_unregister using it after being freed which may lead to a crash.
This has been shown to happen after commit 461e557b9727 ("rtc: nvmem: use
devm_nvmem_register()")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>