diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.9.21/0017-perf-x86-Fix-possible-Spectre-v1-indexing-for-hw_per.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.9.21/0017-perf-x86-Fix-possible-Spectre-v1-indexing-for-hw_per.patch | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0017-perf-x86-Fix-possible-Spectre-v1-indexing-for-hw_per.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0017-perf-x86-Fix-possible-Spectre-v1-indexing-for-hw_per.patch deleted file mode 100644 index cb6045b1..00000000 --- a/common/recipes-kernel/linux/linux-yocto-4.9.21/0017-perf-x86-Fix-possible-Spectre-v1-indexing-for-hw_per.patch +++ /dev/null @@ -1,62 +0,0 @@ -From 1007b2c9e70fe3aaffda12b809da0f3b53642777 Mon Sep 17 00:00:00 2001 -From: Peter Zijlstra <peterz@infradead.org> -Date: Fri, 20 Apr 2018 14:06:29 +0200 -Subject: [PATCH 17/93] perf/x86: Fix possible Spectre-v1 indexing for - hw_perf_event cache_* - -commit ef9ee4ad38445a30909c48998624861716f2a994 upstream. - -> arch/x86/events/core.c:319 set_ext_hw_attr() warn: potential spectre issue 'hw_cache_event_ids[cache_type]' (local cap) -> arch/x86/events/core.c:319 set_ext_hw_attr() warn: potential spectre issue 'hw_cache_event_ids' (local cap) -> arch/x86/events/core.c:328 set_ext_hw_attr() warn: potential spectre issue 'hw_cache_extra_regs[cache_type]' (local cap) -> arch/x86/events/core.c:328 set_ext_hw_attr() warn: potential spectre issue 'hw_cache_extra_regs' (local cap) - -Userspace controls @config which contains 3 (byte) fields used for a 3 -dimensional array deref. - -Reported-by: Dan Carpenter <dan.carpenter@oracle.com> -Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> -Cc: <stable@kernel.org> -Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> -Cc: Arnaldo Carvalho de Melo <acme@redhat.com> -Cc: Jiri Olsa <jolsa@redhat.com> -Cc: Linus Torvalds <torvalds@linux-foundation.org> -Cc: Peter Zijlstra <peterz@infradead.org> -Cc: Stephane Eranian <eranian@google.com> -Cc: Thomas Gleixner <tglx@linutronix.de> -Cc: Vince Weaver <vincent.weaver@maine.edu> -Signed-off-by: Ingo Molnar <mingo@kernel.org> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - arch/x86/events/core.c | 5 ++++- - 1 file changed, 4 insertions(+), 1 deletion(-) - -diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c -index 38623e2..6b955e3 100644 ---- a/arch/x86/events/core.c -+++ b/arch/x86/events/core.c -@@ -303,17 +303,20 @@ set_ext_hw_attr(struct hw_perf_event *hwc, struct perf_event *event) - - config = attr->config; - -- cache_type = (config >> 0) & 0xff; -+ cache_type = (config >> 0) & 0xff; - if (cache_type >= PERF_COUNT_HW_CACHE_MAX) - return -EINVAL; -+ cache_type = array_index_nospec(cache_type, PERF_COUNT_HW_CACHE_MAX); - - cache_op = (config >> 8) & 0xff; - if (cache_op >= PERF_COUNT_HW_CACHE_OP_MAX) - return -EINVAL; -+ cache_op = array_index_nospec(cache_op, PERF_COUNT_HW_CACHE_OP_MAX); - - cache_result = (config >> 16) & 0xff; - if (cache_result >= PERF_COUNT_HW_CACHE_RESULT_MAX) - return -EINVAL; -+ cache_result = array_index_nospec(cache_result, PERF_COUNT_HW_CACHE_RESULT_MAX); - - val = hw_cache_event_ids[cache_type][cache_op][cache_result]; - --- -2.7.4 - |