658c9d2b9f
This patch fixes a crash that happens when testing rfc4543(gcm(aes)) Unable to handle kernel paging request for data at address 0xf59b3420 Faulting instruction address: 0xc0012994 Oops: Kernel access of bad area, sig: 11 [#1] BE PowerPC 44x Platform Modules linked in: tcrypt(+) crypto4xx [...] CPU: 0 PID: 0 Comm: swapper Tainted: G O 4.17.0-rc1+ #23 NIP: c0012994 LR: d3077934 CTR: 06026d49 REGS: cfff7e30 TRAP: 0300 Tainted: G O (4.17.0-rc1+) MSR: 00029000 <CE,EE,ME> CR: 44744822 XER: 00000000 DEAR: f59b3420 ESR: 00000000 NIP [c0012994] __dma_sync+0x58/0x10c LR [d3077934] crypto4xx_bh_tasklet_cb+0x188/0x3c8 [crypto4xx] __dma_sync was fed the temporary _dst that crypto4xx_build_pd() had in it's function stack. This clearly never worked. This patch therefore overhauls the code from the original driver and puts the temporary dst sg list into aead's request context. Fixes: a0aae821ba3d3 ("crypto: crypto4xx - prepare for AEAD support") Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.