Package: linux-2.6
Version: 2.6.32-15~bpo50+1
Severity: important
Hi,
I'm using the latest lenny-backport kernel on a new dell poweredge R710.
every few days I have a kernel panic similar to : Kernel panic - not syncing:
CRED: put_cred_rcu() sees f640ad80 with usage -163535872"
I automated a vmcore backup with kexec in order to collect useful infos:
# uname -a
Linux hostname 2.6.32-bpo.5-686-bigmem #1 SMP Fri Jun 11 22:59:12 UTC 2010 i686
GNU/Linux
# dpkg -l linux-image-2.6.32-bpo.5-686-bigmem
ii linux-image-2.6.32-bpo.5-686-bigmem 2.6.32-15~bpo50+1
Linux 2.6.32 for PCs with 4GB+ RAM
# dpkg -l firmware-bnx2
ii firmware-bnx2 0.24~bpo50+1
Binary firmware for Broadcom NetXtremeII
# lsmod
Module Size Used by
xt_multiport 1775 1
iptable_filter 1790 1
ip_tables 7694 1 iptable_filter
x_tables 8327 2 xt_multiport,ip_tables
ipmi_devintf 4029 2
ipmi_si 26744 1
ipmi_msghandler 22871 2 ipmi_devintf,ipmi_si
ext2 46337 1
loop 9765 0
snd_pcm 47346 0
snd_timer 12238 1 snd_pcm
snd 34383 2 snd_pcm,snd_timer
evdev 5609 0
soundcore 3450 1 snd
psmouse 44665 0
snd_page_alloc 5133 1 snd_pcm
dcdbas 3948 0
tpm_tis 5572 0
tpm 8145 1 tpm_tis
tpm_bios 3573 1 tpm
serio_raw 2920 0
pcspkr 1207 0
power_meter 6894 0
button 3598 0
processor 26623 24
ext3 94308 3
jbd 32213 1 ext3
mbcache 3766 2 ext2,ext3
dm_mirror 9683 0
dm_region_hash 5652 1 dm_mirror
dm_log 6425 2 dm_mirror,dm_region_hash
dm_snapshot 18033 0
dm_mod 46150 15 dm_mirror,dm_log,dm_snapshot
sg 15980 0
sr_mod 10770 0
cdrom 26487 1 sr_mod
ata_generic 2019 0
sd_mod 25889 7
crc_t10dif 1012 1 sd_mod
ses 4516 0
enclosure 4027 1 ses
ata_piix 17672 0
ehci_hcd 28251 0
uhci_hcd 16153 0
libata 115989 2 ata_generic,ata_piix
usbcore 98810 3 ehci_hcd,uhci_hcd
nls_base 4541 1 usbcore
megaraid_sas 21953 6
scsi_mod 101457 6 sg,sr_mod,sd_mod,ses,libata,megaraid_sas
bnx2 52121 0
thermal 9198 0
fan 2590 0
thermal_sys 9378 3 processor,thermal,fan
# lspci
00:00.0 Host bridge: Intel Corporation QuickPath Architecture I/O Hub to ESI
Port (rev 13)
00:01.0 PCI bridge: Intel Corporation QuickPath Architecture I/O Hub PCI
Express Root Port 1 (rev 13)
00:03.0 PCI bridge: Intel Corporation QuickPath Architecture I/O Hub PCI
Express Root Port 3 (rev 13)
00:04.0 PCI bridge: Intel Corporation QuickPath Architecture I/O Hub PCI
Express Root Port 4 (rev 13)
00:05.0 PCI bridge: Intel Corporation QuickPath Architecture I/O Hub PCI
Express Root Port 5 (rev 13)
00:06.0 PCI bridge: Intel Corporation QuickPath Architecture I/O Hub PCI
Express Root Port 6 (rev 13)
00:07.0 PCI bridge: Intel Corporation QuickPath Architecture I/O Hub PCI
Express Root Port 7 (rev 13)
00:09.0 PCI bridge: Intel Corporation QuickPath Architecture I/O Hub PCI
Express Root Port 9 (rev 13)
00:14.0 PIC: Intel Corporation QuickPath Architecture I/O Hub System Management
Registers (rev 13)
00:14.1 PIC: Intel Corporation QuickPath Architecture I/O Hub GPIO and Scratch
Pad Registers (rev 13)
00:14.2 PIC: Intel Corporation QuickPath Architecture I/O Hub Control Status
and RAS Registers (rev 13)
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #4 (rev 02)
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #5 (rev 02)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
Controller #2 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #2 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92)
00:1f.0 ISA bridge: Intel Corporation 82801IB (ICH9) LPC Interface Controller
(rev 02)
00:1f.2 IDE interface: Intel Corporation 82801IB (ICH9) 2 port SATA IDE
Controller (rev 02)
01:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit
Ethernet (rev 20)
01:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit
Ethernet (rev 20)
02:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit
Ethernet (rev 20)
02:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit
Ethernet (rev 20)
03:00.0 RAID bus controller: LSI Logic / Symbios Logic Device 0079 (rev 04)
08:03.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200eW WPCM450
[Hermon] - Winbond/Nuvoton (rev 0a)
then I use crash from http://people.redhat.com/~anderson/
# ./crash /usr/lib/debug/boot/vmlinux-2.6.32-bpo.5-686-bigmem
/root/vmcore_20100807_084759
crash 5.0.6
[...]
KERNEL: /usr/lib/debug/boot/vmlinux-2.6.32-bpo.5-686-bigmem
DUMPFILE: /root/vmcore_20100807_084759
CPUS: 24
DATE: Sat Aug 7 08:47:48 2010
UPTIME: 1 days, 19:44:25
LOAD AVERAGE: 0.14, 0.43, 0.54
TASKS: 583
NODENAME: hostname
RELEASE: 2.6.32-bpo.5-686-bigmem
VERSION: #1 SMP Fri Jun 11 22:59:12 UTC 2010
MACHINE: i686 (2925 Mhz)
MEMORY: 24 GB
PANIC: "[157461.063951] Kernel panic - not syncing: CRED: put_cred_rcu()
sees f640ad80 with usage -163535872"
PID: 0
COMMAND: "swapper"
TASK: f7151100 (1 of 24) [THREAD_INFO: f715c000]
CPU: 15
STATE: TASK_RUNNING (PANIC)
crash> log
[...]
[157461.063951] Kernel panic - not syncing: CRED: put_cred_rcu() sees f640ad80
with usage -163535872
[157461.063953]
[157461.092227] Pid: 0, comm: swapper Not tainted 2.6.32-bpo.5-686-bigmem #1
[157461.092228] Call Trace:
[157461.092234] [<c127d2b8>] ? panic+0x38/0xe4
[157461.092238] [<c104f409>] ? put_cred_rcu+0x1c/0x7b
[157461.092241] [<c1075bc5>] ? __rcu_process_callbacks+0x164/0x227
[157461.092243] [<c1075ca4>] ? rcu_process_callbacks+0x1c/0x39
[157461.092246] [<c103be20>] ? __do_softirq+0xaa/0x151
[157461.092254] [<c103bef8>] ? do_softirq+0x31/0x3c
[157461.092260] [<c103bfce>] ? irq_exit+0x26/0x58
[157461.092268] [<c1019b20>] ? smp_apic_timer_interrupt+0x6c/0x76
[157461.092277] [<c10089d5>] ? apic_timer_interrupt+0x31/0x38
[157461.092286] [<c114007b>] ? radix_tree_node_alloc+0x2c/0x53
[157461.092299] [<f89520e7>] ? acpi_idle_enter_bm+0x253/0x28e [processor]
[157461.092308] [<c11d6269>] ? cpuidle_idle_call+0x68/0xbb
[157461.092316] [<c1007229>] ? cpu_idle+0x89/0xa4
crash> bt
PID: 0 TASK: f7151100 CPU: 15 COMMAND: "swapper"
#0 [f715dddc] crash_kexec at c1064078
#1 [f715ddf8] machine_kexec at c101c7cd
#2 [f715de48] crash_kexec at c106408d
#3 [f715de9c] panic at c127d2ba
#4 [f715deb4] put_cred_rcu at c104f404
#5 [f715dee8] rcu_process_callbacks at c1075c9f
#6 [f715deec] __do_softirq at c103be1a
#7 [f715df14] do_softirq at c103bef3
#8 [f715df20] irq_exit at c103bfc9
#9 [f715df24] smp_apic_timer_interrupt at c1019b1b
#10 [f715df30] apic_timer_interrupt at c10089d0
#11 [f715df94] cpuidle_idle_call at c11d6265
#12 [f715dfa0] cpu_idle at c1007223
crash> struct cred f640ad80
struct cred {
usage = {
counter = -163535872
},
uid = 3238771162,
gid = 0,
suid = 0,
sgid = 3240690332,
euid = 0,
egid = 0,
fsuid = 0,
fsgid = 13,
securebits = 749,
cap_inheritable = {
cap = {0, 16777216}
},
cap_permitted = {
cap = {0, 0}
},
cap_effective = {
cap = {0, 0}
},
cap_bset = {
cap = {0, 4083503872}
},
jit_keyring = 0 '\000',
thread_keyring = 0x0,
request_key_auth = 0x0,
tgcred = 0x20,
security = 0x0,
user = 0xffffffff,
group_info = 0xffffffff,
rcu = {
next = 0x0,
func = 0
}
}
crash> mod
MODULE NAME SIZE OBJECT FILE
f804feb4 ipmi_msghandler 22871 (not loaded) [CONFIG_KALLSYMS]
f8054e3c thermal_sys 9378 (not loaded) [CONFIG_KALLSYMS]
f8059964 x_tables 8327 (not loaded) [CONFIG_KALLSYMS]
f805dd00 ipmi_devintf 4029 (not loaded) [CONFIG_KALLSYMS]
f8060718 fan 2590 (not loaded) [CONFIG_KALLSYMS]
f8068b4c ipmi_si 26744 (not loaded) [CONFIG_KALLSYMS]
f806fd30 thermal 9198 (not loaded) [CONFIG_KALLSYMS]
f838aa44 ip_tables 7694 (not loaded) [CONFIG_KALLSYMS]
f839149c iptable_filter 1790 (not loaded) [CONFIG_KALLSYMS]
f83a2a70 bnx2 52121 (not loaded) [CONFIG_KALLSYMS]
f83bc2d0 scsi_mod 101457 (not loaded) [CONFIG_KALLSYMS]
f83eb46c xt_multiport 1775 (not loaded) [CONFIG_KALLSYMS]
f8421afc megaraid_sas 21953 (not loaded) [CONFIG_KALLSYMS]
f8431ef0 nls_base 4541 (not loaded) [CONFIG_KALLSYMS]
f8476acc usbcore 98810 (not loaded) [CONFIG_KALLSYMS]
f84d5720 libata 115989 (not loaded) [CONFIG_KALLSYMS]
f84f9860 uhci_hcd 16153 (not loaded) [CONFIG_KALLSYMS]
f85134ec ehci_hcd 28251 (not loaded) [CONFIG_KALLSYMS]
f852c16c ata_piix 17672 (not loaded) [CONFIG_KALLSYMS]
f855db1c enclosure 4027 (not loaded) [CONFIG_KALLSYMS]
f859cdcc ses 4516 (not loaded) [CONFIG_KALLSYMS]
f85d5268 crc_t10dif 1012 (not loaded) [CONFIG_KALLSYMS]
f8622b4c sd_mod 25889 (not loaded) [CONFIG_KALLSYMS]
f862e5e8 ata_generic 2019 (not loaded) [CONFIG_KALLSYMS]
f8645ba8 cdrom 26487 (not loaded) [CONFIG_KALLSYMS]
f8657490 sr_mod 10770 (not loaded) [CONFIG_KALLSYMS]
f866b95c sg 15980 (not loaded) [CONFIG_KALLSYMS]
f869b598 dm_mod 46150 (not loaded) [CONFIG_KALLSYMS]
f86b4c7c dm_snapshot 18033 (not loaded) [CONFIG_KALLSYMS]
f86c33e0 dm_log 6425 (not loaded) [CONFIG_KALLSYMS]
f86d01a4 dm_region_hash 5652 (not loaded) [CONFIG_KALLSYMS]
f86e115c dm_mirror 9683 (not loaded) [CONFIG_KALLSYMS]
f88c6b20 mbcache 3766 (not loaded) [CONFIG_KALLSYMS]
f88e3d64 jbd 32213 (not loaded) [CONFIG_KALLSYMS]
f8928000 ext3 94308 (not loaded) [CONFIG_KALLSYMS]
f893aa58 button 3598 (not loaded) [CONFIG_KALLSYMS]
f8955b50 processor 26623 (not loaded) [CONFIG_KALLSYMS]
f8985648 power_meter 6894 (not loaded) [CONFIG_KALLSYMS]
f898f274 pcspkr 1207 (not loaded) [CONFIG_KALLSYMS]
f899a82c serio_raw 2920 (not loaded) [CONFIG_KALLSYMS]
f89aaa94 tpm_bios 3573 (not loaded) [CONFIG_KALLSYMS]
f89b9a38 tpm 8145 (not loaded) [CONFIG_KALLSYMS]
f89c81b4 tpm_tis 5572 (not loaded) [CONFIG_KALLSYMS]
f89f0acc psmouse 44665 (not loaded) [CONFIG_KALLSYMS]
f8a07acc dcdbas 3948 (not loaded) [CONFIG_KALLSYMS]
f8a1407c snd_page_alloc 5133 (not loaded) [CONFIG_KALLSYMS]
f8a211d4 evdev 5609 (not loaded) [CONFIG_KALLSYMS]
f8a34980 soundcore 3450 (not loaded) [CONFIG_KALLSYMS]
f8a54690 snd 34383 (not loaded) [CONFIG_KALLSYMS]
f8a6c85c snd_timer 12238 (not loaded) [CONFIG_KALLSYMS]
f8a93b18 snd_pcm 47346 (not loaded) [CONFIG_KALLSYMS]
f8ab8168 loop 9765 (not loaded) [CONFIG_KALLSYMS]
f8cee24c ext2 46337 (not loaded) [CONFIG_KALLSYMS]
we noticed something : when the server froze after a panic (before I set it up
to automatically switch to a crashkernel) , the other servers connected to the
same ethernet switch were unreachable over the network. everything seems as if
the ethernet card gets crazy and starts sending random data . I can't say for
sure ... Restarting the faulty server gets everything back in order.
I do hope there is enough data to identify the cause of this bug. I keep the
vmcore dump for some time in case someone wants more infos.
Regards,
Joseph.
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