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(parent: ace5228) | patch
Do not hash userspace addresses in fault handlers
authorKees Cook <keescook@chromium.org>
Tue, 19 Dec 2017 21:52:23 +0000 (13:52 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 20 Dec 2017 01:04:43 +0000 (17:04 -0800)
commit10a7e9d849150a2879efc0b04d8a51068c9dd0c5
treefa44e287635811bbc18ee4c722c3c32c9cf78ce5tree | snapshot
parentace52288edf0cb5e7a52b681f057f86224c49c27commit | diff
Do not hash userspace addresses in fault handlers

The hashing of %p was designed to restrict kernel addresses. There is
no reason to hash the userspace values seen during a segfault report,
so switch these to %px. (Some architectures already use %lx.)

Fixes: ad67b74d2469d9b8 ("printk: hash addresses printed with %p")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/sparc/mm/fault_32.c diff | blob | history
arch/sparc/mm/fault_64.c diff | blob | history
arch/um/kernel/trap.c diff | blob | history
arch/x86/mm/fault.c diff | blob | history
https://github.com/torvalds/linux.git