usb 1-1: USB disconnect, device number 2 dw2102: i2c transfer failed. dvb-usb: bulk message failed: -22 (5/-1861366664) ================================================================== dw2102: i2c transfer failed. BUG: KASAN: use-after-free in dvb_usb_device_exit+0xbb/0xd0 drivers/media/usb/dvb-usb/dvb-usb-init.c:294 Read of size 8 at addr ffff888094dca5d0 by task kworker/1:1/21 CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.1.0-rc4-319354-g9a33b36 #3 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 dvb-usb: bulk message failed: -22 (5/-1861366664) Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xe8/0x16e lib/dump_stack.c:113 print_address_description+0x6c/0x236 mm/kasan/report.c:187 dw2102: i2c transfer failed. kasan_report.cold+0x1a/0x3c mm/kasan/report.c:317 dvb_usb_device_exit+0xbb/0xd0 drivers/media/usb/dvb-usb/dvb-usb-init.c:294 dvb-usb: bulk message failed: -22 (5/-1861366664) usb_unbind_interface+0x1c9/0x980 drivers/usb/core/driver.c:423 __device_release_driver drivers/base/dd.c:1082 [inline] device_release_driver_internal+0x436/0x4f0 drivers/base/dd.c:1113 bus_remove_device+0x302/0x5c0 drivers/base/bus.c:556 dw2102: i2c transfer failed. device_del+0x467/0xb90 drivers/base/core.c:2269 dvb-usb: bulk message failed: -22 (5/-1861366664) dw2102: i2c transfer failed. usb_disable_device+0x242/0x790 drivers/usb/core/message.c:1235 dvb-usb: bulk message failed: -22 (5/-1861366664) usb_disconnect+0x298/0x870 drivers/usb/core/hub.c:2197 dw2102: i2c transfer failed. hub_port_connect drivers/usb/core/hub.c:4940 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0xcd2/0x3b00 drivers/usb/core/hub.c:5432 dvb-usb: bulk message failed: -22 (6/-1861366664) process_one_work+0x90f/0x1580 kernel/workqueue.c:2269 dw2102: i2c transfer failed. dvb-usb: bulk message failed: -22 (5/-1861366664) process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x7b0/0xe20 kernel/workqueue.c:2417 dw2102: i2c transfer failed. dvb-usb: bulk message failed: -22 (5/-1861366664) kthread+0x313/0x420 kernel/kthread.c:253 dw2102: i2c transfer failed. dvb-usb: bulk message failed: -22 (5/-1861366664) ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 dw2102: i2c transfer failed. dvb-usb: bulk message failed: -22 (6/-1861366664) Allocated by task 21: set_track mm/kasan/common.c:87 [inline] __kasan_kmalloc mm/kasan/common.c:497 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:470 slab_post_alloc_hook mm/slab.h:437 [inline] slab_alloc_node mm/slub.c:2756 [inline] slab_alloc mm/slub.c:2764 [inline] __kmalloc_track_caller+0xf0/0x2c0 mm/slub.c:4342 kmemdup+0x23/0x50 mm/util.c:118 kmemdup include/linux/string.h:428 [inline] dw2102_probe+0x62c/0xc50 drivers/media/usb/dvb-usb/dw2102.c:2375 usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361 really_probe+0x2da/0xb10 drivers/base/dd.c:509 dw2102: i2c transfer failed. driver_probe_device+0x21d/0x350 drivers/base/dd.c:671 __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778 bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454 __device_attach+0x223/0x3a0 drivers/base/dd.c:844 bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514 device_add+0xad2/0x16e0 drivers/base/core.c:2106 dvb-usb: MAC address: 02:02:02:02:02:02 usb_set_configuration+0xdf7/0x1740 drivers/usb/core/message.c:2021 generic_probe+0xa2/0xda drivers/usb/core/generic.c:210 usb_probe_device+0xc0/0x150 drivers/usb/core/driver.c:266 really_probe+0x2da/0xb10 drivers/base/dd.c:509 driver_probe_device+0x21d/0x350 drivers/base/dd.c:671 dvb-usb: bulk message failed: -22 (5/-1861366664) __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778 dw2102: i2c transfer failed. bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454 __device_attach+0x223/0x3a0 drivers/base/dd.c:844 dvb-usb: bulk message failed: -22 (5/-1861366664) bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514 device_add+0xad2/0x16e0 drivers/base/core.c:2106 usb_new_device.cold+0x537/0xccf drivers/usb/core/hub.c:2534 hub_port_connect drivers/usb/core/hub.c:5089 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0x138e/0x3b00 drivers/usb/core/hub.c:5432 process_one_work+0x90f/0x1580 kernel/workqueue.c:2269 worker_thread+0x9b/0xe20 kernel/workqueue.c:2415 kthread+0x313/0x420 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 dw2102: i2c transfer failed. Freed by task 21: set_track mm/kasan/common.c:87 [inline] __kasan_slab_free+0x130/0x180 mm/kasan/common.c:459 slab_free_hook mm/slub.c:1429 [inline] slab_free_freelist_hook+0x5e/0x140 mm/slub.c:1456 slab_free mm/slub.c:3003 [inline] kfree+0xce/0x290 mm/slub.c:3958 dw2102_probe+0x876/0xc50 drivers/media/usb/dvb-usb/dw2102.c:2409 dvb-usb: bulk message failed: -22 (5/-1861366664) usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361 dw2102: i2c transfer failed. really_probe+0x2da/0xb10 drivers/base/dd.c:509 driver_probe_device+0x21d/0x350 drivers/base/dd.c:671 __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778 bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454 __device_attach+0x223/0x3a0 drivers/base/dd.c:844 bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514 device_add+0xad2/0x16e0 drivers/base/core.c:2106 usb_set_configuration+0xdf7/0x1740 drivers/usb/core/message.c:2021 generic_probe+0xa2/0xda drivers/usb/core/generic.c:210 dvb-usb: bulk message failed: -22 (1/19) usb_probe_device+0xc0/0x150 drivers/usb/core/driver.c:266 dw2102: command 0x51 transfer failed. really_probe+0x2da/0xb10 drivers/base/dd.c:509 driver_probe_device+0x21d/0x350 drivers/base/dd.c:671 __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778 bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454 __device_attach+0x223/0x3a0 drivers/base/dd.c:844 bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514 device_add+0xad2/0x16e0 drivers/base/core.c:2106 usb_new_device.cold+0x537/0xccf drivers/usb/core/hub.c:2534 dvb-usb: bulk message failed: -22 (5/-1861366664) hub_port_connect drivers/usb/core/hub.c:5089 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0x138e/0x3b00 drivers/usb/core/hub.c:5432 dw2102: i2c transfer failed. process_one_work+0x90f/0x1580 kernel/workqueue.c:2269 dvb-usb: bulk message failed: -22 (5/-1861366664) worker_thread+0x9b/0xe20 kernel/workqueue.c:2415 kthread+0x313/0x420 kernel/kthread.c:253 dw2102: i2c transfer failed. ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 dvb-usb: bulk message failed: -22 (5/-1861366664) The buggy address belongs to the object at ffff888094dca200 which belongs to the cache kmalloc-4k of size 4096 dw2102: i2c transfer failed. The buggy address is located 976 bytes inside of 4096-byte region [ffff888094dca200, ffff888094dcb200) The buggy address belongs to the page: page:ffffea0002537200 count:1 mapcount:0 mapping:ffff88812c3f4600 index:0x0 compound_mapcount: 0 flags: 0xfff00000010200(slab|head) raw: 00fff00000010200 dead000000000100 dead000000000200 ffff88812c3f4600 raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888094dca480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb dvb-usb: bulk message failed: -22 (5/-1861366664) ffff888094dca500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888094dca580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888094dca600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888094dca680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== dw2102: i2c transfer failed.