[LTP] madvise07.c:72: FAIL: Did not receive SIGBUS

[Cyril Hrubis]

Hi!
> I'm trying to run ltp on upstream kernel-4.10.0-rc7, and found that
> madvise07 always failing with no SIGBUS received when mmap the PRIVATE
> memory. I hope to know if there're some relevant stuff about this
> issue.
> Any discussion or document for that?

Looks like a plain old kernel bug to me.

> # uname -r
> 4.10.0-rc7
> 
> # ./madvise07
> tst_test.c:794: INFO: Timeout per run is 0h 05m 00s
> madvise07.c:57: INFO: madvise(0x7f25bdd7e000, 4096, MADV_HWPOISON)
> madvise07.c:72: FAIL: Did not receive SIGBUS after accessing
> MAP_PRIVATE memory marked with MADV_HWPOISON

If you reach this TFAIL the child wasn't killed with a signal after it
accessed memory marked with MADV_HWPOISON.

What hardware is this?

> madvise07.c:57: INFO: madvise(0x7f25bdd7e000, 4096, MADV_HWPOISON)
> madvise07.c:90: PASS: madvise(..., MADV_HWPOISON) on MAP_SHARED memory

-- 
Cyril Hrubis
chrubis@suse.cz