On Sat, 2 Jun 2007 01:35:02 -0700 Andrew Morton wrote: > On Sat, 2 Jun 2007 00:15:15 +0200 Alex Riesen <[EMAIL PROTECTED]> wrote: > > > Ubuntu 7.04, P4, SMT, hyperthreading active. Not reproducable, context > > unknown, > > seen only two times :( > > > > kernel: BUG: unable to handle kernel NULL pointer dereference at virtual > > address 00000000 > > kernel: printing eip: > > kernel: 00000000 > > kernel: *pde = 00000000 > > kernel: Oops: 0000 [#1] > > kernel: SMP > > kernel: Modules linked in: binfmt_misc fan button firmware_class it87 > > hwmon_vid hwmon i2c_isa p4_clockmod speedstep_lib ipv6 snd_intel8x0 > > snd_ac97_codec sr_mod cdrom ac97_bus usb_storage snd_pcm_oss sg piix > > snd_pcm snd_mixer_oss snd_seq_oss snd_seq_midi snd_rawmidi > > snd_seq_midi_event snd_seq snd_timer snd_seq_device snd e100 floppy generic > > ehci_hcd uhci_hcd soundcore snd_page_alloc intel_agp agpgart ide_core evdev > > kernel: CPU: 1 > > kernel: EIP: 0060:[<00000000>] Not tainted VLI > > kernel: EFLAGS: 00210246 (2.6.22-rc3-t #74) > > kernel: EIP is at 0x0 > > kernel: eax: f635b040 ebx: c02df2e0 ecx: 00005403 edx: d2b798c0 > > kernel: esi: d2b798c0 edi: bfca8f48 ebp: e9df5f6c esp: e9df5f54 > > kernel: ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068 > > kernel: Process watch (pid: 24035, ti=e9df5000 task=e2ed8030 > > task.ti=e9df5000) > > kernel: Stack: c0164f04 bfca8f48 00005403 d2b798c0 d2b798c0 bfca8f48 > > e9df5f98 c016514d > > kernel: 00000001 e9fb8f49 00000644 00010612 e2ed8140 c1817980 > > d2b798c0 fffffff7 > > kernel: b7e95ff4 e9df5fb0 c0165191 bfca8f48 00000000 00000001 > > bfca8f48 e9df5000 > > kernel: Call Trace: > > kernel: [show_trace_log_lvl+26/47] show_trace_log_lvl+0x1a/0x2f > > kernel: [show_stack_log_lvl+157/165] show_stack_log_lvl+0x9d/0xa5 > > kernel: [show_registers+441/651] show_registers+0x1b9/0x28b > > kernel: [die+273/530] die+0x111/0x212 > > kernel: [do_page_fault+1060/1266] do_page_fault+0x424/0x4f2 > > kernel: [error_code+114/120] error_code+0x72/0x78 > > kernel: [vfs_ioctl+562/581] vfs_ioctl+0x232/0x245 > > kernel: [sys_ioctl+49/72] sys_ioctl+0x31/0x48 > > kernel: [sysenter_past_esp+95/133] sysenter_past_esp+0x5f/0x85 > > kernel: ======================= > > kernel: Code: Bad EIP value. > > kernel: EIP: [<00000000>] 0x0 SS:ESP 0068:e9df5f54 > > gconfd (raa-2316): Exiting > > init: tty4 main process (1607) killed by TERM signal > > init: tty5 main process (1608) killed by TERM signal > > init: tty2 main process (1610) killed by TERM signal > > init: tty3 main process (1613) killed by TERM signal > > init: tty1 main process (1614) killed by TERM signal > > init: tty6 main process (1615) killed by TERM signal > > gdm[1950]: GDM detected a halt or restart in progress. > > kernel: mtrr: no MTRR for ec000000,4000000 found > > kernel: mtrr: no MTRR for e8000000,4000000 found > > postfix/master[2041]: terminating on signal 15 > > exiting on signal 15 > > > > I think we've seen a report of that before. Do you recall what the system > was doing at the time?
That's http://bugzilla.kernel.org/show_bug.cgi?id=8473 > Anyway, please add this, which might catch it: > > --- a/fs/ioctl.c~a > +++ a/fs/ioctl.c > @@ -20,6 +20,7 @@ static long do_ioctl(struct file *filp, > unsigned long arg) > { > int error = -ENOTTY; > + void *f; > > if (!filp->f_op) > goto out; > @@ -29,10 +30,15 @@ static long do_ioctl(struct file *filp, > if (error == -ENOIOCTLCMD) > error = -EINVAL; > goto out; > - } else if (filp->f_op->ioctl) { > + } else if ((f = filp->f_op->ioctl)) { > lock_kernel(); > - error = filp->f_op->ioctl(filp->f_path.dentry->d_inode, > - filp, cmd, arg); > + if (!filp->f_op->ioctl) { > + printk("%s: ioctl %p disappeared\n", __FUNCTION__, f); > + error = 0; > + } else { > + error = filp->f_op->ioctl(filp->f_path.dentry->d_inode, > + filp, cmd, arg); > + } > unlock_kernel(); > } > > _ > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
