On Tue, Jul 18, 2017 at 03:19:00PM -0700, Bart Van Assche wrote:
> Hello Peter,
Sorry for being late, I'm trying to recover from a few weeks of leave
and the inbox is in shambles.
> In a test I ran myself with kernel v4.12-rc1 I also noticed that a
> WARN_ON_ONCE() statement triggered an oops in report_bug() and killed the
> kernel thread of the caller instead of letting the caller continue. What I
> ran into is probably the same oops as in the above call trace. For the test
> I ran myself the disassembly is as follows:
>
> (gdb) list *(report_bug+0x94)
> 0xffffffff812ba024 is in report_bug (lib/bug.c:177).
> 172 return BUG_TRAP_TYPE_WARN;
> 173
> 174 /*
> 175 * Since this is the only store, concurrency is not an issue.
> 176 */
> 177 bug->flags |= BUGFLAG_DONE;
> 178 }
> 179 }
> 180
> 181 if (warning) {
>
> Could this be related to patch "debug: Add _ONCE() logic to report_bug()"?
> Is this a known issue? If so, is a fix perhaps already available?
Yep.. please see:
https://marc.info/?l=linux-kernel&m=150055119925677
