The patch titled
Subject: kasan: use dump_stack_lvl(KERN_ERR) to print stacks
has been added to the -mm tree. Its filename is
kasan-use-dump_stack_lvlkern_err-to-print-stacks.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/kasan-use-dump_stack_lvlkern_err-to-print-stacks.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/kasan-use-dump_stack_lvlkern_err-to-print-stacks.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Alexander Potapenko <glider@xxxxxxxxxx>
Subject: kasan: use dump_stack_lvl(KERN_ERR) to print stacks
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@xxxxxxxxxx
Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Prasad Sodagudi <psodagud@xxxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: he, bo <bo.he@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Petr Mladek <pmladek@xxxxxxxx>
Cc: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Yanmin Zhang <yanmin_zhang@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kasan/report.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/mm/kasan/report.c~kasan-use-dump_stack_lvlkern_err-to-print-stacks
+++ a/mm/kasan/report.c
@@ -230,7 +230,7 @@ static void print_address_description(vo
{
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
pr_err("\n");
print_memory_metadata(info.first_bad_addr);
} else {
- dump_stack();
+ dump_stack_lvl(KERN_ERR);
}
end_report(&flags, addr);
_
Patches currently in -mm which might be from glider@xxxxxxxxxx are
printk-introduce-dump_stack_lvl.patch
kasan-use-dump_stack_lvlkern_err-to-print-stacks.patch
