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Messages in this thread Complete thread (EXPERIMENTAL) |
I wanted to try software suspend again in Linux as 2.5 is doing almost everything pretty well for me already. I boot my uniprocessor Pentium III laptop with: kernel (hd0,0)/boot/vmlinuz-2.5.53 root=/dev/hda1 resume=/dev/hda2 # swapon -s Filename Type Size Used Priority /dev/hda2 partition 489972 0 -1 $ cat /proc/meminfo MemTotal: 191240 kB When I suspend, things proceed swimmingly, I see a lot of dots printed and processes entering the refrigerator, until line 718 is hit in kernel/suspend.c: if (nr_copy_pages != count_and_copy_data_pages(pagedir_nosave)) /* copy */
BUG();
When I aded some printks, it turns out that count_and_copy_data pages
returns 5440 (decimal) and that nr_copy_pages is 5458, 18 more. Before this
function is called, the address c034c000 was printed twice prefixed with
'nosave', once during each call of count_and_copy_data_pages it appears.
So it appears some pages were freed in the critical section! Another interesting note is that pdflush reported 'Bogus wakeup' twice during the refrigeration phase. I also see two pdflushes running. If I remove the BUG();, on resume it crashes on an unhandled NULL pointer, the EIP is in a function aptly named do_magic() at +0x9e. Compiler is gcc 3.2.1. Anything I can do to help, just let me know! Regards, bert -- http://www.PowerDNS.com Open source, database driven DNS Software http://lartc.org Linux Advanced Routing & Traffic Control HOWTO http://netherlabs.nl Consulting | ||||||||||
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