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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> | 2016-10-12 17:34:22 +0530 |
| commit | 0a75f2be2d16a271d64b20f9dc7de3e2629652a1 (patch) | |
| tree | ef087d41c8e7a61eab3bc5951b97e324fab76ce1 /net/ipv4/tcp_output.c | |
| parent | 914f9389202186e1fa876fe5f82c2c6984388d00 (diff) | |
FROMLIST: 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.
This patch also updates the description of the synchronous external
aborts on translation table walks.
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>
Change-Id: I623113fc8bf6d5f023aeec7a0640b62a25ef8420
(cherry picked from commit be3db9340c8011d22f06715339b66bcbbd4893bd)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
[Conflict fixes in lsk-v4.4-android topic branch]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Diffstat (limited to 'net/ipv4/tcp_output.c')
0 files changed, 0 insertions, 0 deletions