diff options
| author | James Morse <james.morse@arm.com> | 2016-06-20 18:28:01 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-07-27 08:42:16 -0700 |
| commit | 2ce30374d2e2e1d063cc7c1a896ee835ec112b5b (patch) | |
| tree | bec8442a0f4f79c556f150bc9ac8e934bc08f8c3 /net/unix/af_unix.c | |
| parent | bd1e0058614563ba855974bf7c65da2f21124df5 (diff) | |
arm64: kernel: Save and restore UAO and addr_limit on exception entry
commit e19a6ee2460bdd0d0055a6029383422773f9999a upstream.
If we take an exception while at EL1, the exception handler inherits
the original context's addr_limit and PSTATE.UAO values. To be consistent
always reset addr_limit and PSTATE.UAO on (re-)entry to EL1. This
prevents accidental re-use of the original context's addr_limit.
Based on a similar patch for arm from Russell King.
Acked-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions