* Futex BUG in 2.6.18rc2-git7
@ 2006-08-04 7:17 Andi Kleen
2006-08-04 8:26 ` Olaf Hering
0 siblings, 1 reply; 5+ messages in thread
From: Andi Kleen @ 2006-08-04 7:17 UTC (permalink / raw)
To: mingo; +Cc: linux-kernel
One of my test machines (single socket core2 duo) running 2.6.18rc2-git7 over night
under moderate load threw this, followed by an endless loop of soft lockup timeouts
(one exemplar appended)
I assume it is related to the new PI mutexes.
-Andi
----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at ...v2.6/linux-2.6.18-rc2-git7/kernel/rtmutex_common.h:74
invalid opcode: 0000 [1] SMP
CPU 0
Modules linked in:
Pid: 23036, comm: ld-linux.so.2 Not tainted 2.6.18-rc2-git7 #7
RIP: 0010:[<ffffffff80247b36>] [<ffffffff80247b36>] rt_mutex_next_owner+0x1a/0x2c
RSP: 0000:ffff8100033f5d70 EFLAGS: 00010207
RAX: ffff81003dc712d0 RBX: ffff81003dc712c0 RCX: 0000000000000469
RDX: 0000000000000000 RSI: ffff810031f907e0 RDI: ffff81003dc712d0
RBP: ffff810003cabc48 R08: ffffffff807a4e60 R09: 0000000000000000
R10: ffff8100033f4000 R11: 0000000000000002 R12: 00000000800059fc
R13: 000000004013d468 R14: 000000004013d7ac R15: ffff81003dc712d0
FS: 0000000000000000(0000) GS:ffffffff807d5000(0063) knlGS:000000004053dba0
CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b
CR2: 000000004000ce80 CR3: 000000002e970000 CR4: 00000000000006e0
Process ld-linux.so.2 (pid: 23036, threadinfo ffff8100033f4000, task ffff810033cf9590)
Stack: ffffffff80247064 0000000000000009 0000000000000009 7fffffffffffffff
ffff810040012ff4 00000000033f5ef8 ffffffff807a4e58 0000000000000000
0000000000000000 0000000000000000 0000000000000000 0000000000000000
Call Trace:
[<ffffffff80247064>] do_futex+0x95a/0xbf5
[<ffffffff8024787d>] compat_sys_futex+0xfd/0x11b
[<ffffffff80220136>] ia32_sysret+0x0/0xa
DWARF2 unwinder stuck at ia32_sysret+0x0/0xa
Leftover inexact backtrace:
Code: 0f 0b 68 9b b8 54 80 c2 4a 00 48 8b 50 50 48 89 d0 c3 48 83
RIP [<ffffffff80247b36>] rt_mutex_next_owner+0x1a/0x2c
RSP <ffff8100033f5d70>
<3>BUG: soft lockup detected on CPU#1!
Call Trace:
[<ffffffff8020ae03>] dump_stack+0x12/0x17
[<ffffffff802520b3>] softlockup_tick+0xdb/0xed
[<ffffffff802397f1>] update_process_times+0x42/0x68
[<ffffffff80217e3b>] smp_local_timer_interrupt+0x23/0x47
[<ffffffff80218522>] smp_apic_timer_interrupt+0x41/0x47
[<ffffffff8020a215>] apic_timer_interrupt+0x65/0x6c
DWARF2 unwinder stuck at apic_timer_interrupt+0x65/0x6c
Leftover inexact backtrace:
... same soft lockup follows forever...
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Futex BUG in 2.6.18rc2-git7
2006-08-04 7:17 Futex BUG in 2.6.18rc2-git7 Andi Kleen
@ 2006-08-04 8:26 ` Olaf Hering
2006-08-04 8:36 ` Andi Kleen
0 siblings, 1 reply; 5+ messages in thread
From: Olaf Hering @ 2006-08-04 8:26 UTC (permalink / raw)
To: Andi Kleen; +Cc: mingo, linux-kernel
On Fri, Aug 04, 2006 at 09:17:00AM +0200, Andi Kleen wrote:
>
> One of my test machines (single socket core2 duo) running 2.6.18rc2-git7 over night
> under moderate load threw this, followed by an endless loop of soft lockup timeouts
> (one exemplar appended)
>
> I assume it is related to the new PI mutexes.
Maybe triggered by this, if it was from wagner.suse.de:
(glibc mainline make check):
GCONV_PATH=/usr/src/packages/BUILD/glibc-2.4/cc-nptl/iconvdata LC_ALL=C /usr/src/packages/BUILD/glibc-2.4/cc-nptl/elf/ld-linux.so.2 --library-path /usr/src/packages/BUILD/glibc-2.4/cc-nptl:/usr/src/packages/BUILD/glibc-2.4/cc-nptl/math:/usr/src/packages/BUILD/glibc-2.4/cc-nptl/elf:/usr/src/packages/BUILD/glibc-2.4/cc-nptl/dlfcn:/usr/src/packages/BUILD/glibc-2.4/cc-nptl/nss:/usr/src/packages/BUILD/glibc-2.4/cc-nptl/nis:/usr/src/packages/BUILD/glibc-2.4/cc-nptl/rt:/usr/src/packages/BUILD/glibc-2.4/cc-nptl/resolv:/usr/src/packages/BUILD/glibc-2.4/cc-nptl/crypt:/usr/src/packages/BUILD/glibc-2.4/cc-nptl/nptl /usr/src/packages/BUILD/glibc-2.4/cc-nptl/nptl/tst-robustpi8 > /usr/src/packages/BUILD/glibc-2.4/cc-nptl/nptl/tst-robustpi8.out
Read from remote host wagner: Connection reset by peer
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Futex BUG in 2.6.18rc2-git7
2006-08-04 8:26 ` Olaf Hering
@ 2006-08-04 8:36 ` Andi Kleen
2006-08-04 20:12 ` Thomas Gleixner
0 siblings, 1 reply; 5+ messages in thread
From: Andi Kleen @ 2006-08-04 8:36 UTC (permalink / raw)
To: Olaf Hering; +Cc: mingo, linux-kernel
On Friday 04 August 2006 10:26, Olaf Hering wrote:
> On Fri, Aug 04, 2006 at 09:17:00AM +0200, Andi Kleen wrote:
> >
> > One of my test machines (single socket core2 duo) running 2.6.18rc2-git7 over night
> > under moderate load threw this, followed by an endless loop of soft lockup timeouts
> > (one exemplar appended)
> >
> > I assume it is related to the new PI mutexes.
>
> Maybe triggered by this, if it was from wagner.suse.de:
Yes it was that box. So it looks like the new mutex code cannot run
the glibc test suite.
-Andi
> > /usr/src/packages/BUILD/glibc-2.4/cc-nptl/nptl/tst-robustpi8.out
> Read from remote host wagner: Connection reset by peer
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Futex BUG in 2.6.18rc2-git7
2006-08-04 8:36 ` Andi Kleen
@ 2006-08-04 20:12 ` Thomas Gleixner
2006-08-04 20:26 ` Olaf Hering
0 siblings, 1 reply; 5+ messages in thread
From: Thomas Gleixner @ 2006-08-04 20:12 UTC (permalink / raw)
To: Andi Kleen; +Cc: Olaf Hering, mingo, linux-kernel
On Fri, 2006-08-04 at 10:36 +0200, Andi Kleen wrote:
> On Friday 04 August 2006 10:26, Olaf Hering wrote:
> > On Fri, Aug 04, 2006 at 09:17:00AM +0200, Andi Kleen wrote:
> > >
> > > One of my test machines (single socket core2 duo) running 2.6.18rc2-git7 over night
> > > under moderate load threw this, followed by an endless loop of soft lockup timeouts
> > > (one exemplar appended)
> > >
> > > I assume it is related to the new PI mutexes.
> >
> > Maybe triggered by this, if it was from wagner.suse.de:
>
> Yes it was that box. So it looks like the new mutex code cannot run
> the glibc test suite.
Can you retest against -rc3-current + the compat fix I sent out earlier
today (see also below) ?
Is the glibc the latest CVS version ?
tglx
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index d1aab1a..c5cca3f 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -39,7 +39,7 @@ void compat_exit_robust_list(struct task
{
struct compat_robust_list_head __user *head = curr->compat_robust_list;
struct robust_list __user *entry, *pending;
- unsigned int limit = ROBUST_LIST_LIMIT, pi;
+ unsigned int limit = ROBUST_LIST_LIMIT, pi, pip;
compat_uptr_t uentry, upending;
compat_long_t futex_offset;
@@ -59,10 +59,10 @@ void compat_exit_robust_list(struct task
* if it exists:
*/
if (fetch_robust_entry(&upending, &pending,
- &head->list_op_pending, &pi))
+ &head->list_op_pending, &pip))
return;
if (upending)
- handle_futex_death((void *)pending + futex_offset, curr, pi);
+ handle_futex_death((void *)pending + futex_offset, curr, pip);
while (compat_ptr(uentry) != &head->list) {
/*
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: Futex BUG in 2.6.18rc2-git7
2006-08-04 20:12 ` Thomas Gleixner
@ 2006-08-04 20:26 ` Olaf Hering
0 siblings, 0 replies; 5+ messages in thread
From: Olaf Hering @ 2006-08-04 20:26 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: Andi Kleen, mingo, linux-kernel
On Fri, Aug 04, 2006 at 10:12:15PM +0200, Thomas Gleixner wrote:
> Is the glibc the latest CVS version ?
Its a snapshot from 2006073023.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2006-08-04 20:26 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2006-08-04 7:17 Futex BUG in 2.6.18rc2-git7 Andi Kleen
2006-08-04 8:26 ` Olaf Hering
2006-08-04 8:36 ` Andi Kleen
2006-08-04 20:12 ` Thomas Gleixner
2006-08-04 20:26 ` Olaf Hering
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox