On Sun, Mar 12, 2017 at 09:13:22PM +0200, Krzysztof Kozlowski wrote: > On Fri, Mar 10, 2017 at 03:44:45PM -0600, Nathan Royce wrote: > > Sure, I went ahead and rebuilt it just using the bare exynos_defconfig > > and adding XTS and ECB and no other changes. > > > > No flags were used. No patches were used other than the 2 you > > provided. Just the barest of bears, the barest of bones, the barest of > > deserts, the barest of hairless cats. > > > > Okay, I reproduced it. Beside enabling crypto tests, ECB and XTS, the > important step is to disable the "ARM Accelerated Cryptographic > Algorithms" so S5P-SSS will be used with XTS. The xts(ecb-aes-s5p)) > itself passes TCRYPT tests but oopses on cryptswap. Hi Herbert, I bisected this to commit f1c131b45410 ("crypto: xts - Convert to skcipher"). The s5p-sss driver stays the same... but the xts changes and as a result we have a NULL pointer dereference (actually of value 00000004): [ 18.930195] Unable to handle kernel NULL pointer dereference at virtual address 00000004 ... [ 18.972325] [<c0313c98>] (post_crypt) from [<c031408c>] (decrypt_done+0x4c/0x54) [ 18.972343] [<c031408c>] (decrypt_done) from [<c056309c>] (s5p_aes_interrupt+0x1bc/0x208) [ 18.972360] [<c056309c>] (s5p_aes_interrupt) from [<c0164930>] (irq_thread_fn+0x1c/0x54) Any hints? Best regards, Krzysztof