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-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
