On 2017/9/28 3:45, Linus Walleij wrote:
On Wed, Sep 27, 2017 at 1:35 PM, Adrian Hunter <adrian.hunter@xxxxxxxxx> wrote:
BUG when removing, fixed by reverting this patch.
[ 346.548512] mmc1: card 0001 removed
[ 346.552782] BUG: unable to handle kernel NULL pointer dereference at 0000000000000070
How did you achieve this? I need to reproduce it.
RPMB is only available on eMMC cards and I don't have a removable eMMC
card since by definition they are soldered on.
Does it happen on an ordinary MMC card without RPMB?
I'm sorry if I'm ignorant of something very obvious here...
I will read the code and see if I'm missing something obvious.
Haven't closely look at this patch, but btw, don't you need
put_device(&rpmb->dev) for the error path of mmc_blk_alloc_rpmb_part
and also do that for mmc_blk_remove_rpmb_part?
And don't you need to check rpmb->md->usage when doing
mmc_blk_remove_rpmb_part ?
Yours,
Linus Walleij
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