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SubjectRe: kernel oops and panic in acpi_atomic_read under 2.6.39.3. call trace included
adding Ying.  He wrote the ghes code.  But if you using 2.6.39, then the
ghes code probably still has some bugs in it that were fixed in 3.0 and 3.1.
And unless you are using a Nehalem machine or later (Westmere, Sandy
Bridge), ghes won't do much for you. Can you just disable it in the
config?

Cheers,
Don

On Mon, Aug 22, 2011 at 04:51:35PM -0400, Rick Warner wrote:
> > > >> Hi,
> > > >>
> > > >> It's better to report ACPI failues to linux-acpi.
> > > >>
> > > >> On Wednesday, August 17, 2011, Rick Warner wrote:
> > > >> > Hi all,
> > > >> >
> > > >> > I am getting a kernel oops/panic on a dual xeon system that is the
> > > >>
> > > >> master of a
> > > >>
> > > >> > 60 node HPC cluster. This is happening while stress testing the
> > > >>
> > > >> system
> > > >>
> > > >> > including significant network traffic. The OS is openSuse 11.4.
> > > >> >
> > > >> > We are running a custom compiled 2.6.39.3 kernel on the systems due
> > > >> > to
> > > >>
> > > >> a bug
> > > >>
> > > >> > in the stock kernel 11.4 provided (igb driver related). After 1-3
> > > >>
> > > >> days of
> > > >>
> > > >> > heavy testing, the master node locks up with the caps lock and
> > > >> > scroll
> > > >>
> > > >> lock
> > > >>
> > > >> > keys on the keyboard blinking with the following output captured via
> > > >> > a
> > > >>
> > > >> serial
> > > >>
> > > >> > console:
> > > >> >
> > > >> > [381920.681113] BUG: unable to handle kernel NULL pointer
> > > >> > dereference
> > > >>
> > > >> at
> > > >>
> > > >> > (null)
> > > >> > [381920.689067] IP: [<ffffffff812a7510>] acpi_atomic_read+0xe3/0x120
> > > >> > [381920.695187] PGD 30c27a067 PUD 16efe6067 PMD 0
> > > >> > [381920.699782] Oops: 0000 [#1] PREEMPT SMP
> > > >> > [381920.703866] last sysfs file:
> > > >> > /sys/devices/system/cpu/cpu15/cache/index2/shared_cpu_map
> > > >> > [381920.711868] CPU 6
> > > >> > [381920.713800] Modules linked in: md5 ipmi_devintf ipmi_si
> > > >>
> > > >> ipmi_msghandler
> > > >>
> > > >> > nfsd lockd nfs_acl auth_rpcgss sunrpc ipt_MASQUERADE iptable_mangle
> > > >> > iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4
> > > >>
> > > >> iptable_filter
> > > >>
> > > >> > ip_tables x_tables af_packet edd cpufreq_conservative
> > > >>
> > > >> cpufreq_userspace
> > > >>
> > > >> > cpufreq_powersave acpi_cpufreq mperf xfs dm_mod ioatdma i7core_edac
> > > >>
> > > >> edac_core
> > > >>
> > > >> > sr_mod cdrom joydev igb i2c_i801 sg button ghes hed iTCO_wdt
> > > >> > iTCO_vendor_support dca pcspkr ext4 jbd2 crc16 raid456
> > > >>
> > > >> async_raid6_recov
> > > >>
> > > >> > async_pq raid6_pq async_xor xor async_memcpy async_tx raid10 raid1
> > > >>
> > > >> raid0 fan
> > > >>
> > > >> > processor thermal thermal_sys ata_generic pata_atiixp arcmsr
> > > >> > [381920.771623]
> > > >> > [381920.773210] Pid: 12701, comm: cluster Not tainted
> > > >>
> > > >> 2.6.39.3-microwaycustom
> > > >>
> > > >> > #1 Supermicro X8DTH-i/6/iF/6F/X8DTH
> > > >> > [381920.783292] RIP: 0010:[<ffffffff812a7510>] [<ffffffff812a7510>]
> > > >> > acpi_atomic_read+0xe3/0x120
> > > >> > [381920.791853] RSP: 0000:ffff88063fc47d98 EFLAGS: 00010046
> > > >>
> > > >> > [381920.797260] RAX: 0000000000000000 RBX: 00000000bf7b5ff0 RCX:
> > > >> ffffffff81a3cdd0
> > > >>
> > > >> > [381920.804486] RDX: 00000000bf7b6010 RSI: 00000000bf7b6000 RDI:
> > > >> > ffff88062d4b95c0
> > > >>
> > > >> > [381920.811712] RBP: ffff88063fc47dc8 R08: ffff88063fc47d98 R09:
> > > >> 0000000000000002
> > > >>
> > > >> > [381920.818940] R10: 0000000000000083 R11: 0000000000000010 R12:
> > > >> > ffffc90003044c20
> > > >> > [381920.826168] R13: ffff88063fc47de0 R14: 0000000000000000 R15:
> > > >> > 0000000000000000
> > > >> > [381920.833392] FS: 0000000000000000(0000)
> > > >> > GS:ffff88063fc40000(0000) knlGS:0000000000000000
> > > >> > [381920.841571] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
> > > >> > [381920.847409] CR2: 0000000000000000 CR3: 00000001d2d0f000 CR4:
> > > >> > 00000000000006e0
> > > >> > [381920.854635] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> > > >> > 0000000000000000
> > > >>
> > > >> > [381920.861861] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> > > >> 0000000000000400
> > > >>
> > > >> > [381920.869088] Process cluster (pid: 12701, threadinfo
> > > >>
> > > >> ffff880028284000, task
> > > >>
> > > >> > ffff880550184380)
> > > >> > [381920.877608] Stack:
> > > >> > [381920.879717] ffffffff81a3cdd0 00000000bf7b5ff0 ffff88062b2cc140
> > > >>
> > > >> ffffc90003044ca8
> > > >>
> > > >> > [381920.887288] ffff88062b2cc140 0000000000000001 ffff88063fc47e08
> > > >>
> > > >> ffffffffa002b21f
> > > >>
> > > >> > [381920.894862] 0000000000000000 0000000000000000 ffff88062b2cc140
> > > >> > 0000000000000000
> > > >> > [381920.902435] Call Trace:
> > > >> > [381920.904969] <NMI>
> > > >> > [381920.907201] [<ffffffffa002b21f>] ghes_read_estatus+0x2f/0x170
> > > >>
> > > >> [ghes]
> > > >>
> > > >> > [381920.913726] [<ffffffffa002b618>] ghes_notify_nmi+0xd8/0x1b0
> > > >>
> > > >> [ghes]
> > > >>
> > > >> > [381920.920076] [<ffffffff8151a14f>] notifier_call_chain+0x3f/0x80
> > > >> > [381920.926080] [<ffffffff8151a1d8>]
> > > >>
> > > >> __atomic_notifier_call_chain+0x48/0x70
> > > >>
> > > >> > [381920.932864] [<ffffffff8151a211>]
> > > >>
> > > >> atomic_notifier_call_chain+0x11/0x20
> > > >>
> > > >> > [381920.939473] [<ffffffff8151a24e>] notify_die+0x2e/0x30
> > > >> > [381920.944691] [<ffffffff81517bd2>] do_nmi+0xa2/0x270
> > > >> > [381920.949649] [<ffffffff81517550>] nmi+0x20/0x30
> > > >> > [381920.954269] [<ffffffff8102ae8a>] ?
> > > >> > native_write_msr_safe+0xa/0x10 [381920.960536] <<EOE>>
> > > >> > [381920.962725] <IRQ>
> > > >> > [381920.965132] [<ffffffff8101131e>]
> > > >> > intel_pmu_disable_all+0x3e/0x120 [381920.971399]
> > > >> > [<ffffffff81010d5a>] x86_pmu_disable+0x4a/0x50 [381920.977066]
> > > >> > [<ffffffff810e7f2b>] perf_pmu_disable+0x2b/0x40 [381920.982817]
> > > >> > [<ffffffff810ee828>] perf_event_task_tick+0x218/0x270
> > > >> > [381920.989082] [<ffffffff81046f4d>] scheduler_tick+0xdd/0x2c0
> > > >> > [381920.994740] [<ffffffff81067097>]
> > > >> > update_process_times+0x67/0x80 [381921.000832]
> > > >> > [<ffffffff81089eef>] tick_sched_timer+0x5f/0xc0 [381921.006578]
> > > >> > [<ffffffff81089e90>] ? tick_nohz_handler+0x100/0x100
> > > >> > [381921.012758] [<ffffffff8107db3d>] __run_hrtimer+0x12d/0x280
> > > >> > [381921.018414] [<ffffffff8107dea7>] hrtimer_interrupt+0xb7/0x1e0
> > > >> > [381921.024343] [<ffffffff810206d7>]
> > > >>
> > > >> smp_apic_timer_interrupt+0x67/0xa0
> > > >>
> > > >> > [381921.030793] [<ffffffff8151e3f3>] apic_timer_interrupt+0x13/0x20
> > > >> > [381921.036891] <EOI>
> > > >> > [381921.038913] Code: fc 10 74 1f 77 08 41 80 fc 08 75 48 eb 0e 41
> > > >> > 80
> > > >>
> > > >> fc 20 74
> > > >>
> > > >> > 17 41 80 fc 40 75 3a eb 15 8a 00 0f b6 c0 eb 11 66 8b 00 0f b7 c0 eb
> > > >>
> > > >> 09 <8b>
> > > >>
> > > >> > 00 89 c0 eb 03 48 8b 00 49 89 45 00 e8 8e 2b e2 ff eb 1b 0f
> > > >> > [381921.059462] RIP [<ffffffff812a7510>]
> > > >> > acpi_atomic_read+0xe3/0x120 [381921.065669] RSP <ffff88063fc47d98>
> > > >> > [381921.069242] CR2: 0000000000000000
> > > >> > [381921.072645] ---[ end trace 52697bfc73a34a90 ]---
> > > >> > [381921.077343] Kernel panic - not syncing: Fatal exception in
> > > >>
> > > >> interrupt
> > > >>
> > > >> > [381921.083784] Pid: 12701, comm: cluster Tainted: G D
> > > >>
> > > >> 2.6.39.3-
> > > >>
> > > >> > microwaycustom #1
> > > >> > [381921.091788] Call Trace:
> > > >> > [381921.094333] <NMI> [<ffffffff81513300>] panic+0x9f/0x1da
> > > >> > [381921.099881] [<ffffffff81517f8c>] oops_end+0xdc/0xf0
> > > >> > [381921.104952] [<ffffffff81032b91>] no_context+0xf1/0x260
> > > >> > [381921.110277] [<ffffffff81032e55>]
> > > >>
> > > >> __bad_area_nosemaphore+0x155/0x200
> > > >>
> > > >> > [381921.116739] [<ffffffff81032f0e>] bad_area_nosemaphore+0xe/0x10
> > > >> > [381921.122766] [<ffffffff81519f46>] do_page_fault+0x366/0x530
> > > >> > [381921.128440] [<ffffffff810ee929>] ?
> > > >>
> > > >> __perf_event_overflow+0xa9/0x220
> > > >>
> > > >> > [381921.134896] [<ffffffff810ef99b>] ?
> > > >>
> > > >> perf_event_update_userpage+0x9b/0xe0
> > > >>
> > > >> > [381921.141698] [<ffffffff81012249>] ?
> > > >>
> > > >> intel_pmu_enable_all+0xc9/0x1a0
> > > >>
> > > >> > [381921.148061] [<ffffffff810123ff>] ?
> > > >>
> > > >> x86_perf_event_set_period+0xdf/0x170
> > > >>
> > > >> > [381921.154852] [<ffffffff81517295>] page_fault+0x25/0x30
> > > >> > [381921.160081] [<ffffffff812a7510>] ? acpi_atomic_read+0xe3/0x120
> > > >> > [381921.166094] [<ffffffff812a7486>] ? acpi_atomic_read+0x59/0x120
> > > >> > [381921.172107] [<ffffffffa002b21f>] ghes_read_estatus+0x2f/0x170
> > > >>
> > > >> [ghes]
> > > >>
> > > >> > [381921.178639] [<ffffffffa002b618>] ghes_notify_nmi+0xd8/0x1b0
> > > >>
> > > >> [ghes]
> > > >>
> > > >> > [381921.185004] [<ffffffff8151a14f>] notifier_call_chain+0x3f/0x80
> > > >> > [381921.191003] [<ffffffff8151a1d8>]
> > > >>
> > > >> __atomic_notifier_call_chain+0x48/0x70
> > > >>
> > > >> > [381921.197789] [<ffffffff8151a211>]
> > > >>
> > > >> atomic_notifier_call_chain+0x11/0x20
> > > >>
> > > >> > [381921.204399] [<ffffffff8151a24e>] notify_die+0x2e/0x30
> > > >> > [381921.209624] [<ffffffff81517bd2>] do_nmi+0xa2/0x270
> > > >> > [381921.214584] [<ffffffff81517550>] nmi+0x20/0x30
> > > >> > [381921.219208] [<ffffffff8102ae8a>] ?
> > > >> > native_write_msr_safe+0xa/0x10 [381921.225470] <<EOE>> <IRQ>
> > > >> > [<ffffffff8101131e>]
> > > >> > intel_pmu_disable_all+0x3e/0x120
> > > >> > [381921.233174] [<ffffffff81010d5a>] x86_pmu_disable+0x4a/0x50
> > > >> > [381921.238836] [<ffffffff810e7f2b>] perf_pmu_disable+0x2b/0x40
> > > >> > [381921.244582] [<ffffffff810ee828>]
> > > >> > perf_event_task_tick+0x218/0x270 [381921.250855]
> > > >> > [<ffffffff81046f4d>] scheduler_tick+0xdd/0x2c0 [381921.256520]
> > > >> > [<ffffffff81067097>] update_process_times+0x67/0x80 [381921.262618]
> > > >> > [<ffffffff81089eef>] tick_sched_timer+0x5f/0xc0 [381921.268363]
> > > >> > [<ffffffff81089e90>] ? tick_nohz_handler+0x100/0x100
> > > >> > [381921.274540] [<ffffffff8107db3d>] __run_hrtimer+0x12d/0x280
> > > >> > [381921.280198] [<ffffffff8107dea7>] hrtimer_interrupt+0xb7/0x1e0
> > > >> > [381921.286125] [<ffffffff810206d7>]
> > > >>
> > > >> smp_apic_timer_interrupt+0x67/0xa0
> > > >>
> > > >> > [381921.292578] [<ffffffff8151e3f3>] apic_timer_interrupt+0x13/0x20
> > > >> > [381921.298673] <EOI>
> > > >> >
> > > >> >
> > > >> > I recompiled the kernel again, disabling the tickless feature as I
> > > >> > saw
> > > >>
> > > >> "nohz"
> > > >>
> > > >> > early in the call trace. After that, it reproduced again but the
> > > >> > call
> > > >>
> > > >> trace
> > > >>
> > > >> > only changed slightly having tick_init_highres in there instead of
> > > >> > tick_nohz_handler. I have that call trace if it is desired as well.
> > > >>
> > > >> It is
> > > >>
> > > >> > nearly identical though.
> > > >> >
> > > >> > I am currently trying a custom 2.6.36.4 on the system, but will need
> > > >>
> > > >> up to 3
> > > >>
> > > >> > days before I know if the problem exists there as well.
> > > >> >
> > > >> > Any ideas on this?
> > > >>
> > > >> It looks like a wrong address in ghes_read_estatus(). I'll have a
> > > >> look at it
> > > >> later today.
> > > >
> > > > Hmm. Please apply the appended patch and see if the error is still
> > > > reproducible (it's on top of the current mainline, so you may need to
> > > > adjust it by hand).
> > > >
> > > > Thanks,
> > > > Rafael
> > > >
> > > > ---
> > > >
> > > > drivers/acpi/apei/ghes.c | 3 +++
> > > > 1 file changed, 3 insertions(+)
> > > >
> > > > Index: linux/drivers/acpi/apei/ghes.c
> > > > ===================================================================
> > > > --- linux.orig/drivers/acpi/apei/ghes.c
> > > > +++ linux/drivers/acpi/apei/ghes.c
> > > > @@ -398,6 +398,9 @@ static int ghes_read_estatus(struct ghes
> > > >
> > > > u32 len;
> > > > int rc;
> > > >
> > > > + if (!g)
> > > > + return -EINVAL;
> > > > +
> > > >
> > > > rc = acpi_atomic_read(&buf_paddr, &g->error_status_address);
> > > > if (rc) {
> > > >
> > > > if (!silent && printk_ratelimit())
> > >
> > > Thanks for the quick patch! Unfortunately, the system crashed again with
> > > the same call trace. I'll list it below in case there are any differences
> > > I missed. I have currently added a test for (!&g->error_status_address)
> > > just like your test on (!g) to verify that isn't a null pointer either,
> > > and will start tests back up with that change. Please let me know if you
> > > have any other suggestions or patches for me to try.
> >
> > That was a long shot, but perhaps you can check what source code
> > corresponds to ghes_read_estatus+0x38 in your kernel?
> >
> > Rafael
> Hi Rafael,
>
> Thanks for the off-list help in getting you this info.
>
> I had already rebuilt the kernel using the change I mentioned earlier (test on
> !&g->error_status_address) since the call trace I got.
>
> I luckily still had a copy of the kernel and modules I built previously using
> just your patch, so I undid my change to the ghes.c source, leaving just your
> patch but not mine so it would match the ghes.ko module I ran on. This is the
> output of gdb on that ghes.ko now:
>
> (gdb) l *ghes_read_estatus+0x38
> 0x258 is in ghes_read_estatus (drivers/acpi/apei/ghes.c:296).
> warning: Source file is more recent than executable.
> 291 int rc;
> 292 if (!g)
> 293 return -EINVAL;
> 294
> 295 rc = acpi_atomic_read(&buf_paddr, &g->error_status_address);
> 296 if (rc) {
> 297 if (!silent && printk_ratelimit())
> 298 pr_warning(FW_WARN GHES_PFX
> 299 "Failed to read error status block address for hardware error source:
> %d.\n",
> 300 g->header.source_id);
>
> The warning about the source being newer is because of the reverted change in
> the ghes.c source mentioned above.
>
> Thanks,
> Rick
> --
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