This is a note to let you know that I've just added the patch titled
bug: use %pB in BUG and stack protector failure
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: bug-use-pb-in-bug-and-stack-protector-failure.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From 0862ca422b79cb5aa70823ee0f07f6b468f86070 Mon Sep 17 00:00:00 2001
From: Kees Cook keescook@chromium.org Date: Fri, 9 Mar 2018 15:50:59 -0800 Subject: bug: use %pB in BUG and stack protector failure
From: Kees Cook keescook@chromium.org
commit 0862ca422b79cb5aa70823ee0f07f6b468f86070 upstream.
The BUG and stack protector reports were still using a raw %p. This changes it to %pB for more meaningful output.
Link: http://lkml.kernel.org/r/20180301225704.GA34198@beast Fixes: ad67b74d2469 ("printk: hash addresses printed with %p") Signed-off-by: Kees Cook keescook@chromium.org Reviewed-by: Andrew Morton akpm@linux-foundation.org Cc: Ingo Molnar mingo@kernel.org Cc: Thomas Gleixner tglx@linutronix.de Cc: Peter Zijlstra peterz@infradead.org Cc: Borislav Petkov bp@alien8.de Cc: Richard Weinberger richard.weinberger@gmail.com, Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- kernel/panic.c | 2 +- lib/bug.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
--- a/kernel/panic.c +++ b/kernel/panic.c @@ -640,7 +640,7 @@ device_initcall(register_warn_debugfs); */ __visible void __stack_chk_fail(void) { - panic("stack-protector: Kernel stack is corrupted in: %p\n", + panic("stack-protector: Kernel stack is corrupted in: %pB\n", __builtin_return_address(0)); } EXPORT_SYMBOL(__stack_chk_fail); --- a/lib/bug.c +++ b/lib/bug.c @@ -191,7 +191,7 @@ enum bug_trap_type report_bug(unsigned l if (file) pr_crit("kernel BUG at %s:%u!\n", file, line); else - pr_crit("Kernel BUG at %p [verbose debug info unavailable]\n", + pr_crit("Kernel BUG at %pB [verbose debug info unavailable]\n", (void *)bugaddr);
return BUG_TRAP_TYPE_BUG;
Patches currently in stable-queue which might be from keescook@chromium.org are
queue-4.15/bug-use-pb-in-bug-and-stack-protector-failure.patch queue-4.15/lib-bug.c-exclude-non-bug-warn-exceptions-from-report_bug.patch