Hello, Am Di, 11.01.2011 09:50 schrieb Pekka Enberg > On Tue, Jan 11, 2011 at 12:31 AM, Matthias Merz wrote: > > This morning I tried vanilla 2.6.37 on my Desktop system, which failed > > to boot but continued displaying Debug-Messages too fast to read. Using > > netconsole I was then able to capture them (see attached file). I was > > able to trigger this bug even with init=/bin/bash by a simple call of > > "mount -o remount,rw /" with my / being an ext4 filesystem. > > > > Using git bisect I could identify commit 37d57443d5 as "the culprit" - > > once I reverted that bugfix locally, my system booted happily. Sorry; this morning the version which I was able to boot yesterday failed. I assume some "hardware state" influeces triggering of this bug and my whole bisect-session yesterday was useless because I did mostly warm restarts and no cold boot when trying :-( > Now here's an interesting bug! Commit 37d57443d5 shouldn't change > anything unless you actually access the affected sysfs files. I'm but > lost with your oops as well so lets CC some scheduler people to see if > they can help us out: You're proven to be right; sorry for complicating things by wrong conclusions - next time I'll hopefully remember to cut the AC-power for 10 seconds when testing revisions... As I just noticed I don't use slub at all, but slab; I'll attach my .config for reference. Keeping the citation of the debug log for inline reference: > BUG: scheduling while atomic: swapper/0/0x10010000 > Modules linked in: i2c_viapro usbhid snd_via82xx via_ircc > snd_mpu401_uart parport_pc sata_promise sata_sil tmscsim evdev > snd_bt87x tda9887 snd_seq_dummy snd_seq_oss snd_seq_midi > snd_seq_midi_event snd_seq snd_pcm_oss snd_mixer_oss snd_ens1371 > snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer > snd snd_page_alloc parport irtty_sir actisys_sir sir_dev irda > crc_ccitt tuner_simple tuner_types msp3400 ir_lirc_codec lirc_dev > ir_sony_decoder bttv ir_jvc_decoder ir_rc6_decoder videobuf_dma_sg > videobuf_core ir_rc5_decoder btcx_risc ir_nec_decoder ir_common > ir_core tveeprom tuner v4l2_common videodev v4l1_compat analog > gameport uhci_hcd ehci_hcd e100 > Modules linked in: i2c_viapro usbhid snd_via82xx via_ircc > snd_mpu401_uart parport_pc sata_promise sata_sil tmscsim evdev > snd_bt87x tda9887 snd_seq_dummy snd_seq_oss snd_seq_midi > snd_seq_midi_event snd_seq snd_pcm_oss snd_mixer_oss snd_ens1371 > snd_rawmidi snd_seq_device snd_ac97_codec ac97_bus snd_pcm snd_timer > snd snd_page_alloc parport irtty_sir actisys_sir sir_dev irda > crc_ccitt tuner_simple tuner_types msp3400 ir_lirc_codec lirc_dev > ir_sony_decoder bttv ir_jvc_decoder ir_rc6_decoder videobuf_dma_sg > videobuf_core ir_rc5_decoder btcx_risc ir_nec_decoder ir_common > ir_core tveeprom tuner v4l2_common videodev v4l1_compat analog > gameport uhci_hcd ehci_hcd e100 > > Pid: 0, comm: swapper Not tainted 2.6.37-matthias #28 A7V8X/System Name > EIP: 0060:[] EFLAGS: 00000246 CPU: 0 > EIP is at default_idle+0x2a/0x40 > EAX: 00000000 EBX: c1596140 ECX: 00000000 EDX: 00000000 > ESI: 0008d800 EDI: c153d000 EBP: c153bfbc ESP: c153bfbc > DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 > Process swapper (pid: 0, ti=f6004000 task=c1541300 task.ti=c153a000) > Stack: > c153bfc4 c1001c7c c153bfcc c13e72a2 c153bfe4 c15706cd 000000a0 c15702b9 > c1596140 00000000 c153bff8 c157006b 01606d60 00000000 c14b0e88 01827003 > 00000000 > Call Trace: > [] ? cpu_idle+0x2c/0x50 > [] ? rest_init+0x52/0x60 > [] ? start_kernel+0x242/0x248 > [] ? unknown_bootoption+0x0/0x19c > [] ? i386_start_kernel+0x6b/0x6d > Code: 00 55 8b 0d 18 67 5c c1 89 e5 85 c9 75 2b 80 3d 05 d5 56 c1 00 > 74 22 89 e0 25 00 e0 ff ff 83 60 0c fb 8b 40 08 a8 08 75 15 fb f4 <89> > e0 25 00 e0 ff ff 83 48 0c 04 c9 c3 90 fb f3 90 c9 c3 fb eb > > Full log available here: > > http://www.spinics.net/lists/linux-mm/msg13451.html Thanks for your effort, Yours Matthias Merz -- In einem geschlossenen System (Kinderzimmer) wachst die Entropie (=Unordnung) so lange, bis jemand (=Eltern) dem System Energie zufuhrt (=die Ture offnet und reinruft: "Jetzt raumt Ihr aber auf!") "Walter P. Zaehl" in