On Thu, 9 Nov 2006, Mattia Dongili wrote:
> On Thu, Nov 09, 2006 at 11:04:53AM -0800, Andrew Morton wrote:
> >
> > (added linux-scsi)
> [...]
> > > [27526.232000] EIP: [<e8074e26>]
> > > scsi_device_dev_release_usercontext+0x36/0x100 [scsi_mod] SS:ESP
> > > 0068:dfdb1e3c
> > >
> > > full dmesg attached, I can test patches and provide any useful
> > > information if needed (just not now because the dock is at work).
> >
> > You're the second or third person to report this (to no effect, btw).
>
> oh, great. I was going to report the same (had with usb key unplug).
> Linux version 2.6.19-rc5-mm1-1 (mattia@tadamune) (gcc version 4.1.2 20060901 (prerelease) (Debian 4.1.1-13)) #4 SMP Wed Nov 8 22:46:11 CET 2006
I don't know exactly where the problem lies, but I have narrowed it down.
In drivers/scsi/sd.c:sd_probe(), the call to add_disk() increases the
device's refcount by 1. However in sd_remove(), the call to del_gendisk()
decreases the device's refcount by 2. Consequently the structure is
deallocated too early, causing the oops.
Somebody who knows more than I do about add_disk() and del_gendisk() will
have to figure what's going wrong.
Alan Stern
-
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/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
