drm/nouveau: prevent userspace from deleting client object - net-next.git

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author	Ben Skeggs <bskeggs@redhat.com>	2016-05-25 17:11:40 +1000
committer	Ben Skeggs <bskeggs@redhat.com>	2017-01-31 20:05:25 +1000
commit	c966b6279f610a24ac1d42dcbe30e10fa61220b2 (patch)
tree	5cb56dcbfa4042779d22ec9c4979133cd4def201 /include/uapi/scsi
parent	96692b097ba76d0c637ae8af47b29c73da33c9d0 (diff)

drm/nouveau: prevent userspace from deleting client object

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Diffstat (limited to 'include/uapi/scsi')

0 files changed, 0 insertions, 0 deletions

ng of the stub FDT code, but inadvertently created an issue with such firmware, by moving some of the FDT manipulation to after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>

Diffstat (limited to 'net/sunrpc/auth_gss/gss_krb5_unseal.c')


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