arm64: Kill 32-bit applications scheduled on 64-bit-only CPUs

Browse source

Scheduling a 32-bit application on a 64-bit-only CPU is a bad idea.

Ensure that 32-bit applications always take the slow-path when returning
to userspace on a system with mismatched support at EL0, so that we can
avoid trying to run on a 64-bit-only CPU and force a SIGKILL instead.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210608180313.11502-5-will@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

...

This commit is contained in:

Will Deacon 2021-06-08 19:02:57 +01:00

parent 2f6a49bbc0

commit 873c3e8977

2 changed files with 44 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

19

arch/arm64/kernel/process.c

View file

26

arch/arm64/kernel/signal.c

View file