From: Kees Cook keescook@chromium.org Subject: bug: use %pB in BUG and stack protector failure
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 ---
kernel/panic.c | 2 +- lib/bug.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff -puN kernel/panic.c~bug-use-%pb-in-bug-and-stack-protector-failure kernel/panic.c --- a/kernel/panic.c~bug-use-%pb-in-bug-and-stack-protector-failure +++ a/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); diff -puN lib/bug.c~bug-use-%pb-in-bug-and-stack-protector-failure lib/bug.c --- a/lib/bug.c~bug-use-%pb-in-bug-and-stack-protector-failure +++ a/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; _