Thread (16 messages) 16 messages, 5 authors, 2019-08-23

Re: [PATCH v8 1/5] mm: untag user pointers in mmap/munmap/mremap/brk

From: Will Deacon <will@kernel.org>
Date: 2019-08-19 16:28:59
Also in: linux-arch, linux-arm-kernel, linux-mm

On Thu, Aug 15, 2019 at 04:43:59PM +0100, Catalin Marinas wrote:
There isn't a good reason to differentiate between the user address
space layout modification syscalls and the other memory
permission/attributes ones (e.g. mprotect, madvise) w.r.t. the tagged
address ABI. Untag the user addresses on entry to these functions.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---
 mm/mmap.c   | 5 +++++
 mm/mremap.c | 6 +-----
 2 files changed, 6 insertions(+), 5 deletions(-)
Acked-by: Will Deacon <will@kernel.org>

Andrew -- please can you pick this patch up? I'll take the rest of the
series via arm64 once we've finished discussing the wording details.

Thanks,

Will
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