From: Andrey Konovalov Date: Fri, 25 Mar 2022 01:12:23 +0000 (-0700) Subject: kasan: improve stack frame info in reports X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=16347c31890375d2a7eb9efb01d2baac28742de3;p=linux.git kasan: improve stack frame info in reports - Print at least task name and id for reports affecting allocas (get_address_stack_frame_info() does not support them). - Capitalize first letter of each sentence. Link: https://lkml.kernel.org/r/aa613f097c12f7b75efb17f2618ae00480fb4bc3.1646237226.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov Reviewed-by: Alexander Potapenko Cc: Andrey Ryabinin Cc: Dmitry Vyukov Cc: Marco Elver Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/mm/kasan/report_generic.c b/mm/kasan/report_generic.c index 3751391ff11a4..7e03cca569a7e 100644 --- a/mm/kasan/report_generic.c +++ b/mm/kasan/report_generic.c @@ -180,7 +180,7 @@ static void print_decoded_frame_descr(const char *frame_descr) return; pr_err("\n"); - pr_err("this frame has %lu %s:\n", num_objects, + pr_err("This frame has %lu %s:\n", num_objects, num_objects == 1 ? "object" : "objects"); while (num_objects--) { @@ -266,13 +266,14 @@ void kasan_print_address_stack_frame(const void *addr) if (WARN_ON(!object_is_on_stack(addr))) return; + pr_err("The buggy address belongs to stack of task %s/%d\n", + current->comm, task_pid_nr(current)); + if (!get_address_stack_frame_info(addr, &offset, &frame_descr, &frame_pc)) return; - pr_err("\n"); - pr_err("addr %px is located in stack of task %s/%d at offset %lu in frame:\n", - addr, current->comm, task_pid_nr(current), offset); + pr_err(" and is located at offset %lu in frame:\n", offset); pr_err(" %pS\n", frame_pc); if (!frame_descr)