Messages in this thread | | | Date | Tue, 22 Dec 2009 16:51:20 +0000 | Subject | WARN_ON at line 380 in kernel/smp.c under 2.6.32.2 + TuxOnIce + KDB | From | Pedro Ribeiro <> |
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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
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