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| author | Dan Williams <dan.j.williams@intel.com> | 2018-01-29 17:03:21 -0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2018-03-19 18:58:37 +0000 |
| commit | 0a1595d2924df1f2380bb230bee05b0432624688 (patch) | |
| tree | 1f35ecc6c5ee5f5a4e62c93770a6f5345c3b090b | |
| parent | b2fddb5b3cbe2ac7d18e62c9588a6cbee9cd7383 (diff) | |
| download | linux-stable-0a1595d2924df1f2380bb230bee05b0432624688.tar.gz linux-stable-0a1595d2924df1f2380bb230bee05b0432624688.tar.bz2 linux-stable-0a1595d2924df1f2380bb230bee05b0432624688.zip | |
x86/spectre: Report get_user mitigation for spectre_v1
commit edfbae53dab8348fca778531be9f4855d2ca0360 upstream.
Reflect the presence of get_user(), __get_user(), and 'syscall' protections
in sysfs. The expectation is that new and better tooling will allow the
kernel to grow more usages of array_index_nospec(), for now, only claim
mitigation for __user pointer de-references.
Reported-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arch@vger.kernel.org
Cc: kernel-hardening@lists.openwall.com
Cc: gregkh@linuxfoundation.org
Cc: torvalds@linux-foundation.org
Cc: alan@linux.intel.com
Link: https://lkml.kernel.org/r/151727420158.33451.11658324346540434635.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | arch/x86/kernel/cpu/bugs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index db76bc85a826..0aee6b38fb80 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -433,7 +433,7 @@ ssize_t cpu_show_spectre_v1(struct sysdev_class *dev, { if (!boot_cpu_has_bug(X86_BUG_SPECTRE_V1)) return sprintf(buf, "Not affected\n"); - return sprintf(buf, "Vulnerable\n"); + return sprintf(buf, "Mitigation: __user pointer sanitization\n"); } ssize_t cpu_show_spectre_v2(struct sysdev_class *dev, |