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Date: Fri, 29 Apr 2011 12:50:35 +0200 From: Sebastian Färber <faerber@...il.com> To: linux-kernel@...r.kernel.org Subject: Hard LOCKUP, maybe acpi related (present in 2.6.32 to 2.6.37, fixed in 2.6.38) Hi, I'm trying to track down a problem i have with newer hardware which seems fixed in 2.6.38.4 but which i can reproduce from 2.6.32 to 2.6.37 I'm running a DEBUG Kernel with nmi_watchdog=1 and attached a backtrace of the lockup that happened on 2.6.37.6. I can also provide backtraces for 2.6.32 to 2.6.35 if necessary, they look very similar. To my untrained eye this looks like a problem with ACPI/CPU C States (CPU in Question is a Quadcore Core i5 750). It's strange that the watchdog only shows backtraces for 3 CPUs/Cores, one is still fine? The servers on which this happens are all completely idle and the lockup occurs every 1-2 days. Would be great if someone more experienced could have a look and see which change in 2.6.38 fixed this. Unfortunately i can't upgrade all servers to 2.6.38 right now so I'm hoping it's possible to backport this to the stable kernel series. If someone needs more information just let me know, I've attached my .config and the backtrace. Regards, Sebastian --- BUG: NMI Watchdog detected LOCKUP on CPU1, ip c100a556, registers: Modules linked in: i2c_dev ipt_LOG xt_limit nf_conntrack_ipv4 nf_defrag_ipv4 xt_state xt_NOTRACK iptable_raw ipt_REJECT iptable_filter nf_conntrack_ftp nf_conntrack e1000e usbcore ipv6 Pid: 0, comm: kworker/0:0 Not tainted 2.6.37.6 #1 Gigabyte Technology Co., Ltd. Q57M-S2H/Q57M-S2H EIP: 0060:[<c100a556>] EFLAGS: 00000046 CPU: 1 EIP is at mwait_idle_with_hints+0x66/0x80 EAX: 00000020 EBX: 00000001 ECX: 00000001 EDX: 00000000 ESI: 00000020 EDI: f0498000 EBP: f0499f44 ESP: f0499f38 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process kworker/0:0 (pid: 0, ti=f0498000 task=f0475400 task.ti=f0498000) Stack: cfc15d32 1218f498 f052b6a0 f0499f4c c101bcf7 f0499f74 c122e781 00002635 00000001 f052b260 000026c7 00000000 f052b394 f052b27c 00000000 f0499f84 c131c8f5 00000001 c152fc00 f0499f94 c1001d35 00000001 00000000 f0499fb0 Call Trace: [<c101bcf7>] ? acpi_processor_ffh_cstate_enter+0x27/0x30 [<c122e781>] ? acpi_idle_enter_bm+0x1b7/0x29e [<c131c8f5>] ? cpuidle_idle_call+0x95/0xe0 [<c1001d35>] ? cpu_idle+0x45/0x80 [<c13cb304>] ? start_secondary+0x180/0x1ec Code: 74 04 0f ae 7a 08 89 e7 31 c9 81 e7 00 e0 ff ff 89 ca 8d 47 08 0f 01 c8 0f ae f0 89 f6 8b 47 08 a8 08 75 07 89 f0 89 d9 0f 01 c9 <8b> 1c 24 8b 74 24 04 8b 7c 24 08 89 ec 5d c3 8d 74 26 00 8d bc ---[ end trace 1ccb64a1e31d2874 ]--- BUG: NMI Watchdog detected LOCKUP on CPU2, ip c100a556, registers: Modules linked in: i2c_dev ipt_LOG xt_limit nf_conntrack_ipv4 nf_defrag_ipv4 xt_state xt_NOTRACK iptable_raw ipt_REJECT iptable_filter nf_conntrack_ftp nf_conntrack e1000e usbcore ipv6 Pid: 0, comm: kworker/0:1 Tainted: G D 2.6.37.6 #1 Gigabyte Technology Co., Ltd. Q57M-S2H/Q57M-S2H EIP: 0060:[<c100a556>] EFLAGS: 00000046 CPU: 2 EIP is at mwait_idle_with_hints+0x66/0x80 EAX: 00000020 EBX: 00000001 ECX: 00000001 EDX: 00000000 ESI: 00000020 EDI: f04a6000 EBP: f04a7f44 ESP: f04a7f38 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process kworker/0:1 (pid: 0, ti=f04a6000 task=f0479400 task.ti=f04a6000) Stack: cfc13a0e 1218f498 f04bac88 f04a7f4c c101bcf7 f04a7f74 c122e781 00002636 00000001 f04ba848 000026b5 00000000 f04ba97c f04ba864 00000000 f04a7f84 c131c8f5 00000002 c152fc00 f04a7f94 c1001d35 00000002 00000000 f04a7fb0 Call Trace: [<c101bcf7>] ? acpi_processor_ffh_cstate_enter+0x27/0x30 [<c122e781>] ? acpi_idle_enter_bm+0x1b7/0x29e [<c131c8f5>] ? cpuidle_idle_call+0x95/0xe0 [<c1001d35>] ? cpu_idle+0x45/0x80 [<c13cb304>] ? start_secondary+0x180/0x1ec Code: 74 04 0f ae 7a 08 89 e7 31 c9 81 e7 00 e0 ff ff 89 ca 8d 47 08 0f 01 c8 0f ae f0 89 f6 8b 47 08 a8 08 75 07 89 f0 89 d9 0f 01 c9 <8b> 1c 24 8b 74 24 04 8b 7c 24 08 89 ec 5d c3 8d 74 26 00 8d bc ---[ end trace 1ccb64a1e31d2875 ]--- BUG: NMI Watchdog detected LOCKUP on CPU0, ip c100a556, registers: Kernel panic - not syncing: Attempted to kill the idle task! Modules linked in: i2c_dev ipt_LOG xt_limit nf_conntrack_ipv4 nf_defrag_ipv4 xt_state xt_NOTRACK iptable_raw ipt_REJECT iptable_filter nf_conntrack_ftp nf_conntrack e1000e usbcore ipv6 Pid: 0, comm: swapper Tainted: G D 2.6.37.6 #1 Gigabyte Technology Co., Ltd. Q57M-S2H/Q57M-S2H EIP: 0060:[<c100a556>] EFLAGS: 00000046 CPU: 0 EIP is at mwait_idle_with_hints+0x66/0x80 EAX: 00000020 EBX: 00000001 ECX: 00000001 EDX: 00000000 ESI: 00000020 EDI: c14e8000 EBP: c14e9f74 ESP: c14e9f68 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process swapper (pid: 0, ti=c14e8000 task=c1506020 task.ti=c14e8000) Stack: d2bc5b3a 1218f498 efc336e0 c14e9f7c c101bcf7 c14e9fa4 c122e781 000113d3 00000001 efc332a0 00003f36 00000000 efc333d4 efc332bc c14eb000 c14e9fb4 c131c8f5 00000000 c152fc00 c14e9fc4 c1001d35 c156a140 00099d00 c14e9fcc Call Trace: [<c101bcf7>] ? acpi_processor_ffh_cstate_enter+0x27/0x30 [<c122e781>] ? acpi_idle_enter_bm+0x1b7/0x29e [<c131c8f5>] ? cpuidle_idle_call+0x95/0xe0 [<c1001d35>] ? cpu_idle+0x45/0x80 [<c13b936d>] ? rest_init+0x5d/0x70 [<c1532955>] ? start_kernel+0x2ec/0x32c [<c1532429>] ? unknown_bootoption+0x0/0x1ef [<c153208e>] ? i386_start_kernel+0x8e/0x90 Code: 74 04 0f ae 7a 08 89 e7 31 c9 81 e7 00 e0 ff ff 89 ca 8d 47 08 0f 01 c8 0f ae f0 89 f6 8b 47 08 a8 08 75 07 89 f0 89 d9 0f 01 c9 <8b> 1c 24 8b 74 24 04 8b 7c 24 08 89 ec 5d c3 8d 74 26 00 8d bc ---[ end trace 1ccb64a1e31d2876 ]--- Download attachment "config-2.6.37.6" of type "application/octet-stream" (68096 bytes) Download attachment "backtrace-2.6.37.6" of type "application/octet-stream" (4389 bytes)
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