On Thu, 2006-04-20 at 11:14 -0700, Robert Merrill wrote:
> > Oh... and could you also send us the Oops/stack trace from the BUG_ON()?
> >
> ------------[ cut here ]------------
> kernel BUG at arch/i386/lib/usercopy.c:582!
> invalid operand: 0000 [#49]
> SMP
> Modules linked in: w83627hf eeprom lm85 w83781d hwmon_vid i2c_isa
> i2c_dev thermal fan button processor ac battery nfs lockd nfs_acl
> sunrpc ipv6 quota_v1 ide_cd cdrom generic joydev piix psmouse evdev
> uhci_hcd ehci_hcd parport_pc parport e1000 rtc serio_raw floppy
> usbcore i2c_i801 ide_core i2c_core mousedev pcspkr shpchp pci_hotplug
> CPU: 2
> EIP: 0060:[<c01ff157>] Not tainted VLI
> EFLAGS: 00010282 (2.6.15.7-soda0)
> EIP is at __copy_from_user_ll+0x12/0xe2
> eax: 00000000 ebx: 00000003 ecx: fffffffb edx: fffffffb
> esi: 0804a024 edi: 00000000 ebp: 00000000 esp: f6964f84
> ds: 007b es: 007b ss: 0068
> Process a.out (pid: 6994, threadinfo=f6964000 task=f70e7030)
> Stack: fffffffb b7f55ff4 f893c2a0 00000000 0804a024 fffffffb fffffffb 000000d0
> f70e7030 00000003 0804a024 b7f55ff4 f6964000 f893dc1d 00000003 0804a024
> 00004000 0804a024 b7f55ff4 bf973d50 ffffffda 0000007b c010007b 000000dc
> Call Trace:
> Code: 07 29 c8 f3 a4 89 c1 c1 e9 02 83 e0 03 90 f3 a5 89 c1 f3 a4 89
> c8 5e 5f c3 57 56 8b 7c 24 0c 8b 74 24 10 8b 4c 24 14 85 c9 79 08 <0f>
> 0b 46 02 63 92 2f c0 83 f9 3f 0f 86 99 00 00 00 89 f8 31 f0
Was there no stack trace in that Oops? AFAICS, getdents64() isn't
supposed to be calling __copy_from_user_ll() at all, so you appear to
have something very weird going here.
Cheers,
Trond
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