syzbot


WARNING: ODEBUG bug in usb_unbind_interface

Status: upstream: reported on 2022/10/07 14:20
Reported-by: syzbot+1dc86a35505aa14c1115@syzkaller.appspotmail.com
First crash: 56d, last: 56d

Sample crash report:
usb 1-1: USB disconnect, device number 20
cdc_ncm 1-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.0-1, CDC NCM (NO ZLP)
------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: work_struct hint: usbnet_deferred_kevent+0x0/0xae0 drivers/net/usb/usbnet.c:1584
WARNING: CPU: 1 PID: 27 at lib/debugobjects.c:505 debug_print_object lib/debugobjects.c:502 [inline]
WARNING: CPU: 1 PID: 27 at lib/debugobjects.c:505 __debug_check_no_obj_freed lib/debugobjects.c:989 [inline]
WARNING: CPU: 1 PID: 27 at lib/debugobjects.c:505 debug_check_no_obj_freed+0x46b/0x650 lib/debugobjects.c:1020
Modules linked in:
CPU: 1 PID: 27 Comm: kworker/1:1 Not tainted 6.0.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Workqueue: usb_hub_wq hub_event
RIP: 0010:debug_print_object lib/debugobjects.c:502 [inline]
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:989 [inline]
RIP: 0010:debug_check_no_obj_freed+0x46b/0x650 lib/debugobjects.c:1020
Code: 48 89 ef e8 47 32 a2 fd 48 8b 13 4c 8b 45 00 48 c7 c7 20 71 0a 8b 48 c7 c6 00 6e 0a 8b 44 89 f1 4d 89 f9 31 c0 e8 85 55 16 fd <0f> 0b 48 ba 00 00 00 00 00 fc ff df ff 05 9f cd ea 09 48 8b 5c 24
RSP: 0018:ffffc90000a2f0d8 EFLAGS: 00010246
RAX: 62d25ed28b046b00 RBX: ffffffff8b0a7198 RCX: 0000000000040000
RDX: ffffc90013401000 RSI: 0000000000014bfa RDI: 0000000000014bfb
RBP: ffffffff8aac8220 R08: ffffffff816d5a8d R09: ffffed10173667f1
R10: ffffed10173667f1 R11: 1ffff110173667f0 R12: ffff888091fa6c1c
R13: ffff888091fa6c28 R14: 0000000000000000 R15: ffffffff85fb5eb0
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f462a01950 CR3: 0000000095603000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 slab_free_hook mm/slub.c:1734 [inline]
 slab_free_freelist_hook+0xcf/0x1a0 mm/slub.c:1785
 slab_free mm/slub.c:3539 [inline]
 kfree+0xda/0x210 mm/slub.c:4567
 device_release+0x98/0x1c0
 kobject_cleanup+0x235/0x470 lib/kobject.c:673
 usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:550 [inline]
 __device_release_driver drivers/base/dd.c:1249 [inline]
 device_release_driver_internal+0x5bc/0x8a0 drivers/base/dd.c:1275
 bus_remove_device+0x2fd/0x410 drivers/base/bus.c:529
 device_del+0x6ec/0xbe0 drivers/base/core.c:3704
 usb_disable_device+0x3dd/0x820 drivers/usb/core/message.c:1419
 usb_disconnect+0x346/0x890 drivers/usb/core/hub.c:2235
 hub_port_connect+0x296/0x2930 drivers/usb/core/hub.c:5197
 hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5497
 port_event+0xec6/0x13b0 drivers/usb/core/hub.c:5653
 hub_event+0x5c1/0xd80 drivers/usb/core/hub.c:5735
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2022/10/03 14:08 upstream 4fe89d07dcc2 feb56351 .config log report info WARNING: ODEBUG bug in usb_unbind_interface
* Struck through repros no longer work on HEAD.