Re: [stable 2.6.24] WARNING: at kernel/time/clockevents.c

Frans Pop
2008-02-13T22:00:57Z

On Wednesday 13 February 2008, Thomas Gleixner wrote:
> can you please apply the following patch ? I really should have
> thought about that, when I fixed the above one.

I still get the bug with this patch. At least I'm now certain it happens
during glibc compilation and that I can reproduce it.

I applied your patch on top of 2.6.24.2 (applied with only minor offsets)
because I also saw the issue with that kernel and I don't yet completely
trust 2.6.25.

Here's the error from this run:
WARNING: at kernel/time/clockevents.c:82 clockevents_program_event()
Pid: 27638, comm: ld-linux.so.2 Not tainted 2.6.24.2-test1 #39

Call Trace:
[<ffffffff8024afaf>] ktime_get+0xc/0x41
[<ffffffff8024ea59>] clockevents_program_event+0x3b/0x94
[<ffffffff8024f8c8>] tick_program_event+0x31/0x4d
[<ffffffff8024a2fd>] hrtimer_reprogram+0x3b/0x51
[<ffffffff8024a478>] enqueue_hrtimer+0x66/0x102
[<ffffffff8024ad38>] hrtimer_start+0x102/0x125
[<ffffffff8819f403>] :ext3:__ext3_journal_stop+0x1f/0x3d
[<ffffffff803f8dcc>] rt_mutex_slowlock+0x90/0x53a
[<ffffffff802667e8>] find_lock_page+0x29/0x8d
[<ffffffff80277a78>] find_extend_vma+0x16/0x59
[<ffffffff802509b2>] get_futex_key+0x82/0x14e
[<ffffffff80251ac5>] futex_lock_pi+0x60f/0x90d
[<ffffffff8024a70d>] hrtimer_wakeup+0x0/0x21
[<ffffffff803f8dcc>] rt_mutex_slowlock+0x90/0x53a
[<ffffffff802527cb>] do_futex+0xa08/0xa3d
[<ffffffff803f9c59>] error_exit+0x0/0x51
[<ffffffff80252d48>] compat_sys_futex+0xf0/0x10e
[<ffffffff8020a6f1>] __switch_to+0x10e/0x27e
[<ffffffff80231889>] schedule_tail+0x23/0x60
[<ffffffff80223972>] ia32_sysret+0x0/0xa

Cheers,
FJP