Messages in this thread | | | Date | Wed, 24 Oct 2007 09:49:07 +0400 | From | "Oleg A. Arkhangelsky" <> | Subject | Re: Hard lockups on 2.6.22.4-SMP |
| |
Hello,
Answering to myself.
OAA> We have a problem with spontaneous (there is no relation with CPU OAA> load, memory load, uptime) hard lockups on linux 2.6.22.4 (no OAA> additional patches) on SMP system (Intel E7230 ICH7 Montherboard). Num OAA> Lock (Caps Lock - no matter) on keyboard is not responding. There is OAA> no debug on console (no oops, no kernel panic, no NMI watchdog info OAA> [but nmi_watchdog=1 and NMI in /proc/interrupts is OK]). All we see is OAA> just previous console state (for example - login: prompt). We have the OAA> same situation on another PC with abosolutely the some hardware and OAA> software configuration. Could you give us some hints about how to OAA> debug this situation? If you need some additional information about OAA> our system, feel free to ask. I can post a lot of output (i.e. lspci, OAA> dmesg, etc...) but i don't want to post any useless information.
Yesterday we added CONFIG_DEBUG_SPINLOCK and CONFIG_DEBUG_SPINLOCK_SLEEP to our kernel config.
After six hours of uptime we got the same lockup, but the kernel became a little verbose:
BUG: spinlock lockup on CPU#1, swapper/0, e9bcb200
Nothing else. No call trace, no cpu registers dump. Just this line. Any hints?
-- wbr, Oleg mailto:sysoleg@progtech.ru
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |