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| author |   Alexander Potapenko <glider@google.com> | 2021-02-25 17:19:47 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-26 09:41:02 -0800 |
| commit | f2b84d2e40eb1a17f72dc4a1da463ec8de649f19 (patch) | |
| tree | 4137dee69706077ababa1478e1fba14656b33ca8 /mm/kfence | |
| parent | tracing: add error_report_end trace point (diff) | |
| download | linux-dev-f2b84d2e40eb1a17f72dc4a1da463ec8de649f19.tar.xz linux-dev-f2b84d2e40eb1a17f72dc4a1da463ec8de649f19.zip | |
kfence: use error_report_end tracepoint
Make it possible to trace KFENCE error reporting. A good usecase is
watching for trace events from the userspace to detect and process memory
corruption reports from the kernel.
Link: https://lkml.kernel.org/r/20210121131915.1331302-3-glider@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Suggested-by: Marco Elver <elver@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/kfence')
| -rw-r--r-- | mm/kfence/report.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/kfence/report.c b/mm/kfence/report.c index 4a424de44e2d..ab83d5a59bb1 100644 --- a/mm/kfence/report.c +++ b/mm/kfence/report.c @@ -14,6 +14,7 @@ #include <linux/seq_file.h> #include <linux/stacktrace.h> #include <linux/string.h> +#include <trace/events/error_report.h> #include <asm/kfence.h> @@ -248,6 +249,7 @@ void kfence_report_error(unsigned long address, bool is_write, struct pt_regs *r show_regs(regs); else dump_stack_print_info(KERN_ERR); + trace_error_report_end(ERROR_DETECTOR_KFENCE, address); pr_err("==================================================================\n"); lockdep_on(); |