Andrew Morton schrieb: > > (switched to email. Please respond via emailed reply-to-all, not via the > bugzilla web interface). > > > On Mon, 1 Jun 2009 11:54:13 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > >> http://bugzilla.kernel.org/show_bug.cgi?id=13420 >> >> Summary: NULL pointer dereference after hard-resetting a >> usb-connected iPod >> Product: Drivers >> Version: 2.5 >> Kernel Version: 2.6.30-rc7 >> Platform: All >> OS/Version: Linux >> Tree: Mainline >> Status: NEW >> Severity: normal >> Priority: P1 >> Component: USB >> AssignedTo: greg@xxxxxxxxx >> ReportedBy: dariush@xxxxxxxxxxx >> Regression: No >> > > scsi and USB core conspired to get a NULL pointer passed into > device_del() and the driver core wasn't robust enough to handle it. > > Kay: if you have time: driver do this rather a lot and it would be good > if we could bullet-proof the core a bit more to handle these bugs more > gracefully. > > The trace is horridly wordwrapped. I'll see if I can get that fixed, > after the bugzilla guys have repsonded to my previous emails. Sigh. > > It would help if someone could work out if this is a scsi bug or a USB > bug so we can assign it appropriately, thanks. Here's the same backtrace with better formatting. ciao Dariush Jun 1 13:13:48 polaris kernel: [11915.124766] usb 2-3: USB disconnect, address 5 Jun 1 13:13:48 polaris kernel: [11915.126638] BUG: unable to handle kernel NULL pointer dereference at 00000000000000b8 Jun 1 13:13:48 polaris kernel: [11915.126651] IP: [<ffffffff8056219e>] device_del+0xe/0x1d0 Jun 1 13:13:48 polaris kernel: [11915.126670] PGD 0 Jun 1 13:13:48 polaris kernel: [11915.126677] Oops: 0000 [#1] SMP Jun 1 13:13:48 polaris kernel: [11915.126685] last sysfs file: /sys/devices/pci0000:00/0000:00:1d.2/pools Jun 1 13:13:48 polaris kernel: [11915.126692] CPU 1 Jun 1 13:13:48 polaris kernel: [11915.126697] Modules linked in: vboxnetflt vboxdrv dell_laptop Jun 1 13:13:48 polaris kernel: [11915.126714] Pid: 339, comm: khubd Not tainted 2.6.30-rc7 #1 Latitude D630 Jun 1 13:13:48 polaris kernel: [11915.126721] RIP: 0010:[<ffffffff8056219e>] [<ffffffff8056219e>] device_del+0xe/0x1d0 Jun 1 13:13:48 polaris kernel: [11915.126734] RSP: 0018:ffff88007f1fba80 EFLAGS: 00010282 Jun 1 13:13:48 polaris kernel: [11915.126740] RAX: ffffffff80580840 RBX: 0000000000000000 RCX: 00000000ffffffff Jun 1 13:13:48 polaris kernel: [11915.126746] RDX: ffff880072d51168 RSI: ffffffff80579600 RDI: 0000000000000010 Jun 1 13:13:48 polaris kernel: [11915.126752] RBP: ffff88007f1fbaa0 R08: 0000000000000000 R09: 0000000000000000 Jun 1 13:13:48 polaris kernel: [11915.126759] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000010 Jun 1 13:13:48 polaris kernel: [11915.126765] R13: 0000000000000010 R14: ffff880069f2f828 R15: ffff880072d54000 Jun 1 13:13:48 polaris kernel: [11915.126772] FS: 0000000000000000(0000) GS:ffff88000141d000(0000) knlGS:0000000000000000 Jun 1 13:13:48 polaris kernel: [11915.126779] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b Jun 1 13:13:48 polaris kernel: [11915.126785] CR2: 00000000000000b8 CR3: 0000000000201000 CR4: 00000000000006e0 Jun 1 13:13:48 polaris kernel: [11915.126791] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Jun 1 13:13:48 polaris kernel: [11915.126798] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Jun 1 13:13:48 polaris kernel: [11915.126805] Process khubd (pid: 339, threadinfo ffff88007f1fa000, task ffff88007f17d6a0) Jun 1 13:13:48 polaris kernel: [11915.126810] Stack: Jun 1 13:13:48 polaris kernel: [11915.126814] 0000000000000000 ffff880072d51168 0000000000000010 ffff880069f2f828 Jun 1 13:13:48 polaris kernel: [11915.126826] ffff88007f1fbad0 ffffffff8058086a 0000000000000004 ffff880072d51168 Jun 1 13:13:48 polaris kernel: [11915.126840] ffffffff80abefc8 ffffffff80abe2a0 ffff88007f1fbaf0 ffffffff8057dd12 Jun 1 13:13:48 polaris kernel: [11915.126856] Call Trace: Jun 1 13:13:48 polaris kernel: [11915.126862] [<ffffffff8058086a>] sd_remove+0x2a/0x80 Jun 1 13:13:48 polaris kernel: [11915.126873] [<ffffffff8057dd12>] scsi_bus_remove+0x42/0x50 Jun 1 13:13:48 polaris kernel: [11915.126883] [<ffffffff80564992>] __device_release_driver+0x72/0xc0 Jun 1 13:13:48 polaris kernel: [11915.126893] [<ffffffff80564ac8>] device_release_driver+0x28/0x40 Jun 1 13:13:48 polaris kernel: [11915.126902] [<ffffffff80563e40>] bus_remove_device+0xb0/0xf0 Jun 1 13:13:48 polaris kernel: [11915.126911] [<ffffffff805622c8>] device_del+0x138/0x1d0 Jun 1 13:13:48 polaris kernel: [11915.126921] [<ffffffff8057e0a3>] __scsi_remove_device+0x53/0x90 Jun 1 13:13:48 polaris kernel: [11915.126930] [<ffffffff8057afc5>] scsi_forget_host+0x75/0x80 Jun 1 13:13:48 polaris kernel: [11915.126942] [<ffffffff80574277>] scsi_remove_host+0x77/0x130 Jun 1 13:13:48 polaris kernel: [11915.126951] [<ffffffff8061e62a>] quiesce_and_remove_host+0x7a/0xd0 Jun 1 13:13:48 polaris kernel: [11915.126963] [<ffffffff8061e758>] usb_stor_disconnect+0x18/0x30 Jun 1 13:13:48 polaris kernel: [11915.126973] [<ffffffff80604942>] usb_unbind_interface+0x62/0x170 Jun 1 13:13:48 polaris kernel: [11915.126986] [<ffffffff80564992>] __device_release_driver+0x72/0xc0 Jun 1 13:13:48 polaris kernel: [11915.126995] [<ffffffff80564ac8>] device_release_driver+0x28/0x40 Jun 1 13:13:48 polaris kernel: [11915.127004] [<ffffffff80563e40>] bus_remove_device+0xb0/0xf0 Jun 1 13:13:48 polaris kernel: [11915.127013] [<ffffffff805622c8>] device_del+0x138/0x1d0 Jun 1 13:13:48 polaris kernel: [11915.127022] [<ffffffff806015d5>] usb_disable_device+0xa5/0x130 Jun 1 13:13:48 polaris kernel: [11915.127032] [<ffffffff805fc1db>] usb_disconnect+0xbb/0x130 Jun 1 13:13:48 polaris kernel: [11915.127042] [<ffffffff805fd0df>] hub_thread+0x3ef/0x13e0 Jun 1 13:13:48 polaris kernel: [11915.127051] [<ffffffff8026bdbd>] ? trace_hardirqs_on+0xd/0x10 Jun 1 13:13:48 polaris kernel: [11915.127066] [<ffffffff8080da0f>] ? _spin_unlock_irqrestore+0x3f/0x60 Jun 1 13:13:48 polaris kernel: [11915.127079] [<ffffffff8025aea0>] ? autoremove_wake_function+0x0/0x40 Jun 1 13:13:48 polaris kernel: [11915.127091] [<ffffffff805fccf0>] ? hub_thread+0x0/0x13e0 Jun 1 13:13:48 polaris kernel: [11915.127100] [<ffffffff805fccf0>] ? hub_thread+0x0/0x13e0 Jun 1 13:13:48 polaris kernel: [11915.127109] [<ffffffff8025aac6>] kthread+0x56/0x90 Jun 1 13:13:48 polaris kernel: [11915.127118] [<ffffffff8020c43a>] child_rip+0xa/0x20 Jun 1 13:13:48 polaris kernel: [11915.127131] [<ffffffff8020be3c>] ? restore_args+0x0/0x30 Jun 1 13:13:48 polaris kernel: [11915.127141] [<ffffffff8025aa70>] ? kthread+0x0/0x90 Jun 1 13:13:48 polaris kernel: [11915.127150] [<ffffffff8020c430>] ? child_rip+0x0/0x20 Jun 1 13:13:48 polaris kernel: [11915.127160] Code: 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f c9 c3 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 56 41 55 41 54 49 89 f c 53 <48> 8b 87 a8 00 00 00 4c 8b 37 48 85 c0 74 18 48 8b 78 70 4c 89 Jun 1 13:13:48 polaris kernel: [11915.127263] RIP [<ffffffff8056219e>] device_del+0xe/0x1d0 Jun 1 13:13:48 polaris kernel: [11915.127263] RSP <ffff88007f1fba80> Jun 1 13:13:48 polaris kernel: [11915.127263] CR2: 00000000000000b8 Jun 1 13:13:48 polaris kernel: [11915.127329] ---[ end trace cc2ced89cc82911f ]--- Jun 1 13:13:48 polaris kernel: [11915.130236] sd 6:0:0:0: [sdb] READ CAPACITY failed Jun 1 13:13:48 polaris kernel: [11915.130246] sd 6:0:0:0: [sdb] Result: hostbyte=0x01 driverbyte=0x00 Jun 1 13:13:48 polaris kernel: [11915.130256] sd 6:0:0:0: [sdb] Sense not available. Jun 1 13:13:48 polaris kernel: [11915.130299] sd 6:0:0:0: [sdb] Write Protect is off Jun 1 13:13:48 polaris kernel: [11915.130306] sd 6:0:0:0: [sdb] Mode Sense: 00 00 00 00 Jun 1 13:13:48 polaris kernel: [11915.130312] sd 6:0:0:0: [sdb] Assuming drive cache: write through Jun 1 13:13:48 polaris kernel: [11915.130582] sd 6:0:0:0: [sdb] Attached SCSI removable disk -- 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
