<div class="gmail_quote">On Fri, Apr 17, 2009 at 15:23, Robby Workman <<a href="mailto:rworkman@slackware.com" target="_blank">rworkman@slackware.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> This is on the stock 2.6.27.7 kernel, correct? Honestly, I'm not sure what else would be needed on the pm-utils end of things; this seems more like a kernel bug. You might consider building the latest in the 2.6.27.x series (.21 last I checked) to see if it still happens there; this might have already been fixed upstream, and I'd hate to waste someone's time with a bug report that's already fixed. </blockquote><div> Sorry, I forgot to tell you that I am using slackware-current, all things up-to-date, i.e., linux-2.6.29.1 . Although I have configured and complied kernel myself, the configuration should be very close to the official one in this aspect. Unfortunately, the problem is more complicated. The truth is: 1) With NEED_CLOCK_SYNC off, 2.6.29.1 break about 10min after resume. dmesgs attached in the LQ post. 2) With NEED_CLOCK_SYNC on, 2.6.29.1 will break about 1hour or so after resume, at least this case has occurred two times on my box. Symptom alike. dmesg snip here: (the attachment is full dmesg) ====================================== [ 6413.351177] BUG: unable to handle kernel paging request at f76f6000 [ 6413.351193] IP: [<c016f919>] get_page_from_freelist+0x2a9/0x470 [ 6413.351213] *pde = 00007067 *pte = e5cb4839 [ 6413.351224] Oops: 0003 [#2] SMP [ 6413.351230] last sysfs file: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map [ 6413.351239] Modules linked in: radeon drm vboxnetflt vboxdrv snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss ipv6 nls_cp936 vfat fat ext4 jbd2 crc16 fuse b43 mac80211 dell_laptop cfg80211 sdhci_pci dcdbas ricoh_mmc joydev led_class ohci_hcd ati_agp input_polldev shpchp sg agpgart video output [ 6413.351287] [ 6413.351294] Pid: 3145, comm: plasma Tainted: G D (2.6.29.1-slk-based-2 #4) Inspiron 1501 [ 6413.351302] EIP: 0060:[<c016f919>] EFLAGS: 00210246 CPU: 1 [ 6413.351311] EIP is at get_page_from_freelist+0x2a9/0x470 [ 6413.351317] EAX: 00000000 EBX: c16edec0 ECX: 00000400 EDX: 00000003 [ 6413.351323] ESI: 00000000 EDI: f76f6000 EBP: c16edec0 ESP: d7411d78 [ 6413.351328] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 [ 6413.351334] Process plasma (pid: 3145, ti=d7410000 task=f6b389f0 task.ti=d7410000) [ 6413.351340] Stack: [ 6413.351342] 00000002 00000044 00200246 f76f6000 c0617920 00000002 00000000 00000000 [ 6413.351354] 001280d2 00000002 00200246 00000001 c0587980 00000000 00000000 c058930c [ 6413.351365] c0587c80 c0587140 c0587c80 f6b389f0 c9b1fff8 001280d2 c016fddd c0589300 [ 6413.351378] Call Trace: [ 6413.351384] [<c016fddd>] __alloc_pages_internal+0xbd/0x470 [ 6413.351395] [<c017eae5>] handle_mm_fault+0x385/0x610 [ 6413.351409] [<c011bc8e>] do_page_fault+0x23e/0x6a0 [ 6413.351420] [<c0101d65>] __switch_to+0x175/0x190 [ 6413.351427] [<c044f0e4>] schedule+0x294/0x930 [ 6413.351435] [<c014cad2>] tick_dev_program_event+0x32/0xb0 [ 6413.351446] [<c014cbca>] tick_program_event+0x2a/0x40 [ 6413.351453] [<c013261c>] irq_exit+0x3c/0x80 [ 6413.351461] [<c011685a>] smp_apic_timer_interrupt+0x5a/0x90 [ 6413.351468] [<c011ba50>] do_page_fault+0x0/0x6a0 [ 6413.351475] [<c0451292>] error_code+0x72/0x78 [ 6413.351487] Code: 24 20 00 79 40 8b 7c 24 2c 85 ff 7e 38 89 dd 31 f6 90 ba 03 00 00 00 89 e8 e8 94 03 fb ff b9 00 04 00 00 89 44 24 0c 89 c7 31 c0 <f3> ab 8b 44 24 0c ba 03 00 00 00 46 83 c5 20 e8 b3 01 fb ff 3b [ 6413.351542] EIP: [<c016f919>] get_page_from_freelist+0x2a9/0x470 SS:ESP 0068:d7411d78 [ 6413.351556] ---[ end trace 1c05764e1d5f5ab3 ]--- [ 6413.351566] note: plasma[3145] exited with preempt_count 1 ====================================== 3) 2.6.27.21 kernel won't break. With or Without NEED_CLOCK_SYNC. I suspend/resume 3 times and run happily 2+ hours after resume. I think it maybe a regression in kernel... </div></div>-- Cheers, Grissiom