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FROMGIT: kasan: use dump_stack_lvl(KERN_ERR) to print stacks

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Most of the contents of KASAN reports are printed with pr_err(), so use a
consistent logging level to print the memory access stacks.

Link: https://lkml.kernel.org/r/20210506105405.3535023-2-glider@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Prasad Sodagudi <psodagud@quicinc.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: he, bo <bo.he@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Yanmin Zhang <yanmin_zhang@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

Bug: 186674719
Test: Treehugger
(cherry picked from commit bf5570ed0654a21000e5dad9243ea1ba30bfe208
 https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git akpm)
Signed-off-by: Alexander Potapenko <glider@google.com>
Change-Id: I9a612c44291122aed2f1baab816f24c4128b78fe
This commit is contained in:
Alexander Potapenko 2021-05-14 10:39:38 +10:00 • committed by Todd Kjos
commit c141d9773b
1 changed files with 3 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

6
mm/kasan/report.c
View file

@ -230,7 +230,7 @@ static void print_address_description(void *addr, u8 tag)
{
struct page *page = kasan_addr_to_page(addr);
dump_stack();
dump_stack_lvl(KERN_ERR);
pr_err("\n");
if (page && PageSlab(page)) {
@ -375,7 +375,7 @@ void kasan_report_async(void)
pr_err("BUG: KASAN: invalid-access\n");
pr_err("Asynchronous mode enabled: no access details available\n");
pr_err("\n");
dump_stack();
dump_stack_lvl(KERN_ERR);
end_report(&flags, 0);
}
#endif /* CONFIG_KASAN_HW_TAGS */
@ -420,7 +420,7 @@ static void __kasan_report(unsigned long addr, size_t size, bool is_write,
pr_err("\n");
print_memory_metadata(info.first_bad_addr);
} else {
dump_stack();
dump_stack_lvl(KERN_ERR);
}
end_report(&flags, addr);