diff options
| author | Nadav Amit | 2019-04-26 02:11:24 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2019-04-30 12:37:50 +0200 |
| commit | d97080ebed7811a53c931032a284166ee46b9565 (patch) | |
| tree | 3968e96a0096908f364a68c3d4a78d0c3c210431 /kernel/fork.c | |
| parent | x86/mm: Introduce temporary mm structs (diff) | |
| download | kernel-qcow2-linux-d97080ebed7811a53c931032a284166ee46b9565.tar.gz kernel-qcow2-linux-d97080ebed7811a53c931032a284166ee46b9565.tar.xz kernel-qcow2-linux-d97080ebed7811a53c931032a284166ee46b9565.zip | |
x86/mm: Save debug registers when loading a temporary mm
Prevent user watchpoints from mistakenly firing while the temporary mm
is being used. As the addresses of the temporary mm might overlap those
of the user-process, this is necessary to prevent wrong signals or worse
things from happening.
Signed-off-by: Nadav Amit <namit@vmware.com>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <akpm@linux-foundation.org>
Cc: <ard.biesheuvel@linaro.org>
Cc: <deneen.t.dock@intel.com>
Cc: <kernel-hardening@lists.openwall.com>
Cc: <kristen@linux.intel.com>
Cc: <linux_dti@icloud.com>
Cc: <will.deacon@arm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190426001143.4983-5-namit@vmware.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/fork.c')
0 files changed, 0 insertions, 0 deletions