diff options
| author | Jeff Vander Stoep <jeffv@google.com> | 2015-08-18 20:50:10 +0100 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-10-07 10:04:46 -0400 |
| commit | 698cebfe17a68a172a5513d8025c280ba5e8cf4a (patch) | |
| tree | 8baa50b6d19b93fa090265bfbbb782ff9b921710 /arch/arm64 | |
| parent | 0e90b248e7871c8a8fc1af5e73055e2d15778a79 (diff) | |
| download | lwn-698cebfe17a68a172a5513d8025c280ba5e8cf4a.tar.gz lwn-698cebfe17a68a172a5513d8025c280ba5e8cf4a.zip | |
arm64: kconfig: Move LIST_POISON to a safe value
[ Upstream commit bf0c4e04732479f650ff59d1ee82de761c0071f0 ]
Move the poison pointer offset to 0xdead000000000000, a
recognized value that is not mappable by user-space exploits.
Cc: <stable@vger.kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Thierry Strudel <tstrudel@google.com>
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index dc2d66cdf311..88d6f7fae840 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -91,6 +91,10 @@ config NO_IOPORT_MAP config STACKTRACE_SUPPORT def_bool y +config ILLEGAL_POINTER_VALUE + hex + default 0xdead000000000000 + config LOCKDEP_SUPPORT def_bool y |