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| author | Catalin Marinas <catalin.marinas@arm.com> | 2016-07-01 18:22:39 +0100 |
|---|---|---|
| committer | Amit Pundir <amit.pundir@linaro.org> | 2017-01-16 15:00:56 +0530 |
| commit | 23df43f5fcf51d3df59d8c2991810f0d5b329c0a (patch) | |
| tree | 977197f6f546dadacad937d2437ec758a9393250 /tools/perf/scripts/python | |
| parent | cb198c45ff6fe7f2bfe8e05570a5ad07e9b9abbe (diff) | |
UPSTREAM: arm64: Handle faults caused by inadvertent user access with PAN enabled
When TTBR0_EL1 is set to the reserved page, an erroneous kernel access
to user space would generate a translation fault. This patch adds the
checks for the software-set PSR_PAN_BIT to emulate a permission fault
and report it accordingly.
Cc: Will Deacon <will.deacon@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 31432001
Change-Id: I87e48f6075f84878e4d26d4fadf6eaac49d2cb4e
(cherry picked from commit 786889636ad75296c213547d1ca656af4c59f390)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions