Hi, Erik de Castro Lopo wrote:
> Shortly after coming out of hibernate I plugged in a USB mouse. When the mouse > didn't work I found the following in dmesg. [...] > [23415.258904] usb 6-1: New USB device found, idVendor=062a, idProduct=0000 > [23415.258913] usb 6-1: New USB device strings: Mfr=0, Product=0, > SerialNumber=0 Hmm. This is your mouse. > [23415.259062] BUG: unable to handle kernel NULL pointer dereference at (null) > [23415.259072] IP: [<ffffffff8118b599>] strcmp+0x5/0x1a Calling strcmp with second argument NULL, which means [...] > [23415.259466] Call Trace: > [23415.259479] [<ffffffff8113debc>] ? sysfs_find_dirent+0x1b/0x2f the "name" parameter to sysfs_find_dirent is NULL, which usually would mean > [23415.259487] [<ffffffff8113dfca>] ? __sysfs_add_one+0x18/0x84 > [23415.259504] [<ffffffff8113e08c>] ? sysfs_add_one+0x19/0xe4 > [23415.259520] [<ffffffff8113db24>] ? sysfs_add_file_mode+0x4e/0x7f > [23415.259534] [<ffffffff8113faf3>] ? internal_create_group+0xdc/0x15a the name field of one of the attributes passed to sysfs_create_group was NULL, so > [23415.259551] [<ffffffff8121296c>] ? device_add_groups+0x22/0x5d > [23415.259560] [<ffffffff81213060>] ? device_add+0x2d2/0x537 an attribute in dev->groups or dev->type->groups had a NULL name, but > [23415.259584] [<ffffffffa00811ec>] ? usb_new_device+0x125/0x186 [usbcore] > [23415.259609] [<ffffffffa00828f6>] ? hub_thread+0xc23/0x117d [usbcore] > [23415.259621] [<ffffffff81064a56>] ? autoremove_wake_function+0x0/0x2e > [23415.259644] [<ffffffffa0081cd3>] ? hub_thread+0x0/0x117d [usbcore] > [23415.259653] [<ffffffff81064789>] ? kthread+0x79/0x81 I don't see why that would happen. I guess it would be nice to know which attribute, and to know whether we can trust anything at all or if there is some rampaging driver clearing memory. Was this reproducible? If so, is it still? Colin, could you send kernel messages from the similar event you experienced (as a followup to this report if it involved plugging in a mouse after hibernate, or as a new report otherwise)? Thanks, Jonathan -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org