Hi , is this of any use for you? kernel is 2.6.22.1-rt9 Sep 6 07:35:11 pcazick kernel: BUG: unable to handle kernel paging request at virtual address 28000000 Sep 6 07:35:11 pcazick kernel: printing eip: Sep 6 07:35:11 pcazick kernel: c017a26a Sep 6 07:35:11 pcazick kernel: *pde = 00000000 Sep 6 07:35:11 pcazick kernel: stopped custom tracer. Sep 6 07:35:11 pcazick kernel: Oops: 0000 [#1] Sep 6 07:35:11 pcazick kernel: PREEMPT SMP Sep 6 07:35:12 pcazick kernel: Modules linked in: fuse snd_seq_midi snd_seq_midi_event snd_seq_dummy nfs lockd nfs_acl sunrpc capability commoncap evdev button ac battery ipv6 dm_snapshot dm_mirror dm_mod snd_seq i2c_savage4 savagefb fb_ddc i2c_algo_bit snd_ice1724 snd_ice17xx_ak4xxx snd_ac97_codec ac97_bus snd_ak4114 snd_pcm snd_timer snd_page_alloc i2c_viapro snd_pt2258 snd_i2c snd_ak4xxx_adda snd_mpu401_uart snd_rawmidi via686a snd_seq_device i2c_isa snd shpchp parport_pc via_agp soundcore i2c_core rt2500 parport pci_hotplug agpgart ext3 jbd mbcache raid10 raid456 xor raid1 raid0 multipath linear md_mod ide_disk ata_generic libata scsi_mod via82cxxx generic ide_core thermal processor fan vga16fb vgastate Sep 6 07:35:12 pcazick kernel: CPU: 0 Sep 6 07:35:12 pcazick kernel: EIP: 0060:[<c017a26a>] Not tainted VLI Sep 6 07:35:12 pcazick kernel: EFLAGS: 00010206 (2.6.22.1-rt9 #1) Sep 6 07:35:12 pcazick kernel: EIP is at __d_lookup+0xd2/0xfa Sep 6 07:35:12 pcazick kernel: eax: 28000000 ebx: c1720a75 ecx: e4251084 edx: d8874c10 Sep 6 07:35:12 pcazick kernel: esi: d2e510e8 edi: 28000000 ebp: ce5e3f04 esp: ce5e3dc4 Sep 6 07:35:12 pcazick kernel: ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068 preempt:00000001 Sep 6 07:35:12 pcazick kernel: Process find (pid: 3451, ti=ce5e2000 task=d8874c10 task.ti=ce5e2000) Sep 6 07:35:12 pcazick kernel: Stack: ce5e3e3c c3e5e9dc 00000009 e4251084 c97d8000 e4251084 d2e510e8 c97d8000 Sep 6 07:35:12 pcazick kernel: ce5e3f04 c01714b8 ce5e3e48 ce5e3e3c ce5e3f04 dfadbf20 e4251084 d2e510e8 Sep 6 07:35:12 pcazick kernel: c97d8000 ce5e3f04 c01731c1 c97d8009 00000000 00000000 dfadbf20 c017dba5 Sep 6 07:35:12 pcazick kernel: Call Trace: Sep 6 07:35:12 pcazick kernel: [<c01714b8>] do_lookup+0x24/0x143 Sep 6 07:35:12 pcazick kernel: [<c01731c1>] __link_path_walk +0x7d4/0xc12 Sep 6 07:35:12 pcazick kernel: [<c017dba5>] mntput_no_expire+0x11/0x6e Sep 6 07:35:12 pcazick kernel: [<c01736a8>] link_path_walk+0xa9/0xb3 Sep 6 07:35:12 pcazick kernel: [<c0173643>] link_path_walk+0x44/0xb3 Sep 6 07:35:12 pcazick kernel: [<c017393a>] do_path_lookup+0x162/0x17d Sep 6 07:35:12 pcazick kernel: [<c017275e>] getname+0x59/0x8f Sep 6 07:35:12 pcazick kernel: [<c0174106>] __user_walk_fd+0x2f/0x45 Sep 6 07:35:12 pcazick kernel: [<c016df47>] vfs_lstat_fd+0x16/0x3d Sep 6 07:35:12 pcazick kernel: [<c016dfb3>] sys_lstat64+0xf/0x23 Sep 6 07:35:12 pcazick kernel: [<c0103e1a>] syscall_call+0x7/0xb Sep 6 07:35:12 pcazick kernel: ======================= Sep 6 07:35:12 pcazick kernel: Code: 6f 77 05 00 85 c0 75 16 31 f6 f6 43 04 10 75 05 90 ff 03 89 de 89 e8 e8 4d 11 13 00 eb 26 89 e8 e8 44 11 13 00 8b 3f 85 ff 74 17 <8b> 07 0f 18 00 90 8d 5f d4 8b 4c 24 0c 39 4b 38 75 e8 e9 71 ff Sep 6 07:35:12 pcazick kernel: EIP: [<c017a26a>] __d_lookup+0xd2/0xfa SS:ESP 0068:ce5e3dc4 Sep 7 14:15:35 pcazick kernel: BUG: unable to handle kernel paging request at virtual address ff7eff00 Sep 7 14:15:35 pcazick kernel: printing eip: Sep 7 14:15:35 pcazick kernel: c017a26a Sep 7 14:15:35 pcazick kernel: *pde = 00000000 Sep 7 14:15:35 pcazick kernel: Oops: 0000 [#2] Sep 7 14:15:35 pcazick kernel: PREEMPT SMP Sep 7 14:15:35 pcazick kernel: Modules linked in: fuse snd_seq_midi snd_seq_midi_event snd_seq_dummy nfs lockd nfs_acl sunrpc capability commoncap evdev button ac battery ipv6 dm_snapshot dm_mirror dm_mod snd_seq i2c_savage4 savagefb fb_ddc i2c_algo_bit snd_ice1724 snd_ice17xx_ak4xxx snd_ac97_codec ac97_bus snd_ak4114 snd_pcm snd_timer snd_page_alloc i2c_viapro snd_pt2258 snd_i2c snd_ak4xxx_adda snd_mpu401_uart snd_rawmidi via686a snd_seq_device i2c_isa snd shpchp parport_pc via_agp soundcore i2c_core rt2500 parport pci_hotplug agpgart ext3 jbd mbcache raid10 raid456 xor raid1 raid0 multipath linear md_mod ide_disk ata_generic libata scsi_mod via82cxxx generic ide_core thermal processor fan vga16fb vgastate Sep 7 14:15:35 pcazick kernel: CPU: 0 Sep 7 14:15:35 pcazick kernel: EIP: 0060:[<c017a26a>] Not tainted VLI Sep 7 14:15:35 pcazick kernel: EFLAGS: 00010286 (2.6.22.1-rt9 #1) Sep 7 14:15:35 pcazick kernel: EIP is at __d_lookup+0xd2/0xfa Sep 7 14:15:35 pcazick kernel: eax: ff7eff00 ebx: c3700e5c ecx: b8a04b79 edx: d1b3e740 Sep 7 14:15:35 pcazick kernel: esi: df48a388 edi: ff7eff00 ebp: d4ddbf04 esp: d4ddbdc4 Sep 7 14:15:35 pcazick kernel: ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068 preempt:00000001 Sep 7 14:15:35 pcazick kernel: Process find (pid: 4155, ti=d4dda000 task=d1b3e740 task.ti=d4dda000) Sep 7 14:15:35 pcazick kernel: Stack: d4ddbe3c dee70edc 00000006 b8a04b79 d4d21000 b8a04b79 df48a388 d4d21000 Sep 7 14:15:35 pcazick kernel: d4ddbf04 c01714b8 d4ddbe48 d4ddbe3c d4ddbf04 dfadbf20 b8a04b79 df48a388 Sep 7 14:15:35 pcazick kernel: d4d21000 d4ddbf04 c01731c1 d4d21006 00000000 d4ddbe94 c032c960 00010000 Sep 7 14:15:35 pcazick kernel: Call Trace: Sep 7 14:15:35 pcazick kernel: [<c01714b8>] do_lookup+0x24/0x143 Sep 7 14:15:35 pcazick kernel: [<c01731c1>] __link_path_walk +0x7d4/0xc12 Sep 7 14:15:35 pcazick kernel: [<c01070f3>] timer_interrupt+0x2e/0x34 Sep 7 14:15:35 pcazick kernel: [<c0173643>] link_path_walk+0x44/0xb3 Sep 7 14:15:35 pcazick kernel: [<c017393a>] do_path_lookup+0x162/0x17d Sep 7 14:15:35 pcazick kernel: [<c017275e>] getname+0x59/0x8f Sep 7 14:15:35 pcazick kernel: [<c0174106>] __user_walk_fd+0x2f/0x45 Sep 7 14:15:35 pcazick kernel: [<c016df47>] vfs_lstat_fd+0x16/0x3d Sep 7 14:15:35 pcazick kernel: [<c016dfb3>] sys_lstat64+0xf/0x23 Sep 7 14:15:35 pcazick kernel: [<c0103e1a>] syscall_call+0x7/0xb Sep 7 14:15:35 pcazick kernel: [<c02a0000>] __ipv6_addr_type+0xc/0xb8 Sep 7 14:15:35 pcazick kernel: ======================= Sep 7 14:15:35 pcazick kernel: Code: 6f 77 05 00 85 c0 75 16 31 f6 f6 43 04 10 75 05 90 ff 03 89 de 89 e8 e8 4d 11 13 00 eb 26 89 e8 e8 44 11 13 00 8b 3f 85 ff 74 17 <8b> 07 0f 18 00 90 8d 5f d4 8b 4c 24 0c 39 4b 38 75 e8 e9 71 ff Sep 7 14:15:35 pcazick kernel: EIP: [<c017a26a>] __d_lookup+0xd2/0xfa SS:ESP 0068:d4ddbdc4 Le jeudi 06 septembre 2007 à 11:06 -0700, Paul E. McKenney a écrit : > On Thu, Sep 06, 2007 at 12:52:00PM -0500, Clark Williams wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > Paul E. McKenney wrote: > > > On Fri, Jun 08, 2007 at 03:43:48PM -0400, Steven Rostedt wrote: > > >> On Fri, 2007-06-08 at 12:36 -0700, Paul E. McKenney wrote: > > >>> On Fri, Jun 08, 2007 at 11:27:08AM -0400, Steven Rostedt wrote: > > >>>> The first time I compiled it, I forgot the ';' and got a warning there. > > >>>> But the warning also included "declaring structure softirq_action in > > >>>> prototype", so I fixed both the ';' and added the struct. I can try > > >>>> compile without it. But I also know that adding #include <interrupt.h> > > >>>> in rcupreempt.h caused issues too. > > >>> If I leave out both the "struct softirq_action" and the > > >>> rcu_process_callbacks() declaration,, it compiles for me. > > >>> > > >>> So I guess the rcu_process_callbacks() should be declared static... > > >> OK, I can update the patch to reflect that. Remember, I didn't learn > > >> anything from doing this patch, so I have no idea why > > >> rcu_procell_callbacks was global. I was just keeping to the norm. :-) > > > > > > Hey, -I- learned something from your doing the patch -- namely that > > > rcu_process_callbacks() was needlessly non-static. ;-) > > > > > >> Actually, I'll make a separate patch for this change. This is a > > >> different issue. > > > > > > Sounds good! > > > > > > > Paul, > > > > I had a test run of a kernel using Steven's patch (RCU using tasklets) going over the > > weekend. It looks like it made it through running racer for 24hrs without a panic, > > but I'm not entirely convinced (since my reservation of the test system expired on > > Saturday and I didn't look at it until Wednesday; bad Clark, no doughnut). > > > > I've got another test running now and I'll be able to poke around on the system > > tomorrow morning to see if in fact there were no RCU related Oops'en. I'll let you > > know what we find. > > Thank you for the info, Clark! > > Of course, this all begs the question of why the heck switching from > tasklets to softirqs should make any difference at all... > > Thanx, Paul > - > To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
