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Date: Tue, 22 Dec 2009 16:51:20 +0000 From: Pedro Ribeiro <pedrib@...il.com> To: linux-kernel@...r.kernel.org Subject: WARN_ON at line 380 in kernel/smp.c under 2.6.32.2 + TuxOnIce + KDB Hi all, I've been asked by Nigel Cunningham of TuxOnIce to forward this bug here. While resuming from hibernate (using TuxOnIce) I'm seeing the WARN_ON at line 380 in kernel/smp.c trigger from a kmap_high call right after secondary processors have been brought down (the previous message is "CPU1 is down"). I only have pictures of the backtrace (readable but not very good quality, sorry). http://img51.imageshack.us/img51/2312/stacktrace1.jpg http://img195.imageshack.us/img195/3646/stacktrace2.jpg At first I thought this was related to my battery saving script messing with /proc/sys/vm/dirty_writeback_centisecs, but I'm not sure right now, it still happens with the default value, so I'm clueless. Mind you, this does not impede the resume - it just dumps this stack trace and continues resuming happily. Some information which might be helpful: lspci -vv, http://pastebin.com/m2c217b4e dmesg, http://pastebin.com/m491ab4db .config, http://pastebin.com/m2e4352fe (the pastebin links are good for a month) My hardware is a Lenovo T400, and I'm using 2.6.32.2 + TuxOnIce + KDB patches. Thanks for your help, Pedro -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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