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KASAN: use-after-free Read in hso_probe

Status: closed as dup on 2019/11/19 14:43
Subsystems: usb
[Documentation on labels]
Reported-by: syzbot+3930f3e416920885c9d4@syzkaller.appspotmail.com
First crash: 1682d, last: 1389d
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
WARNING in hso_probe usb fs C 17 1397d 1682d
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
KASAN: use-after-free Read in hso_probe 1 (2) 2019/11/19 14:43
Reminder: 45 active syzbot reports in usb subsystem 1 (1) 2019/11/19 04:27
Reminder: 67 active syzbot reports in usb subsystem 1 (1) 2019/10/04 03:38

Sample crash report:
 worker_thread+0x96/0xe20 kernel/workqueue.c:2410
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
hso 3-1:0.0: Failed to find BULK IN ep
==================================================================
BUG: KASAN: use-after-free in __mutex_lock_common kernel/locking/mutex.c:938 [inline]
BUG: KASAN: use-after-free in __mutex_lock+0xf1e/0x1360 kernel/locking/mutex.c:1103
Read of size 8 at addr ffff8881cd9f6158 by task kworker/0:0/5

CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xef/0x16e lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x314 mm/kasan/report.c:374
 __kasan_report.cold+0x37/0x77 mm/kasan/report.c:506
 kasan_report+0xe/0x20 mm/kasan/common.c:641
 __mutex_lock_common kernel/locking/mutex.c:938 [inline]
 __mutex_lock+0xf1e/0x1360 kernel/locking/mutex.c:1103
 device_lock include/linux/device.h:771 [inline]
 device_del+0x9e/0xd30 drivers/base/core.c:2627
 device_unregister+0x22/0xc0 drivers/base/core.c:2696
 device_destroy+0x96/0xd0 drivers/base/core.c:3275
 tty_unregister_device+0x7e/0x1a0 drivers/tty/tty_io.c:3192
 hso_serial_tty_unregister drivers/net/usb/hso.c:2232 [inline]
 hso_create_bulk_serial_device drivers/net/usb/hso.c:2678 [inline]
 hso_probe.cold+0x6e/0x14c drivers/net/usb/hso.c:2944
 usb_probe_interface+0x310/0x800 drivers/usb/core/driver.c:374
 really_probe+0x290/0xac0 drivers/base/dd.c:551
 driver_probe_device+0x223/0x350 drivers/base/dd.c:724
 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:831
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431
 __device_attach+0x217/0x390 drivers/base/dd.c:897
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0x1459/0x1bf0 drivers/base/core.c:2487
 usb_set_configuration+0xe47/0x17d0 drivers/usb/core/message.c:2023
 usb_generic_driver_probe+0x9d/0xe0 drivers/usb/core/generic.c:241
 usb_probe_device+0xd9/0x230 drivers/usb/core/driver.c:272
 really_probe+0x290/0xac0 drivers/base/dd.c:551
 driver_probe_device+0x223/0x350 drivers/base/dd.c:724
 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:831
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431
 __device_attach+0x217/0x390 drivers/base/dd.c:897
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0x1459/0x1bf0 drivers/base/core.c:2487
 usb_new_device.cold+0x540/0xcd0 drivers/usb/core/hub.c:2544
 hub_port_connect drivers/usb/core/hub.c:5191 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5331 [inline]
 port_event drivers/usb/core/hub.c:5477 [inline]
 hub_event+0x21cb/0x4300 drivers/usb/core/hub.c:5559
 process_one_work+0x94b/0x1620 kernel/workqueue.c:2264
 worker_thread+0x96/0xe20 kernel/workqueue.c:2410
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Allocated by task 1802:
 save_stack+0x1b/0x80 mm/kasan/common.c:72
 set_track mm/kasan/common.c:80 [inline]
 __kasan_kmalloc mm/kasan/common.c:515 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:488
 kmalloc include/linux/slab.h:555 [inline]
 kzalloc include/linux/slab.h:669 [inline]
 tty_register_device_attr+0x1b6/0x6f0 drivers/tty/tty_io.c:3131
 hso_serial_common_create+0x113/0x710 drivers/net/usb/hso.c:2266
 hso_create_bulk_serial_device drivers/net/usb/hso.c:2648 [inline]
 hso_probe+0xc93/0x1b7b drivers/net/usb/hso.c:2944
 usb_probe_interface+0x310/0x800 drivers/usb/core/driver.c:374
 really_probe+0x290/0xac0 drivers/base/dd.c:551
 driver_probe_device+0x223/0x350 drivers/base/dd.c:724
 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:831
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431
 __device_attach+0x217/0x390 drivers/base/dd.c:897
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0x1459/0x1bf0 drivers/base/core.c:2487
 usb_set_configuration+0xe47/0x17d0 drivers/usb/core/message.c:2023
 usb_generic_driver_probe+0x9d/0xe0 drivers/usb/core/generic.c:241
 usb_probe_device+0xd9/0x230 drivers/usb/core/driver.c:272
 really_probe+0x290/0xac0 drivers/base/dd.c:551
 driver_probe_device+0x223/0x350 drivers/base/dd.c:724
 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:831
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431
 __device_attach+0x217/0x390 drivers/base/dd.c:897
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0x1459/0x1bf0 drivers/base/core.c:2487
 usb_new_device.cold+0x540/0xcd0 drivers/usb/core/hub.c:2544
 hub_port_connect drivers/usb/core/hub.c:5191 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5331 [inline]
 port_event drivers/usb/core/hub.c:5477 [inline]
 hub_event+0x21cb/0x4300 drivers/usb/core/hub.c:5559
 process_one_work+0x94b/0x1620 kernel/workqueue.c:2264
 worker_thread+0x96/0xe20 kernel/workqueue.c:2410
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Freed by task 1802:
 save_stack+0x1b/0x80 mm/kasan/common.c:72
 set_track mm/kasan/common.c:80 [inline]
 kasan_set_free_info mm/kasan/common.c:337 [inline]
 __kasan_slab_free+0x117/0x160 mm/kasan/common.c:476
 slab_free_hook mm/slub.c:1444 [inline]
 slab_free_freelist_hook mm/slub.c:1477 [inline]
 slab_free mm/slub.c:3024 [inline]
 kfree+0xd5/0x300 mm/slub.c:3976
 device_release+0x71/0x200 drivers/base/core.c:1358
 kobject_cleanup lib/kobject.c:693 [inline]
 kobject_release lib/kobject.c:722 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x256/0x550 lib/kobject.c:739
 put_device drivers/base/core.c:2586 [inline]
 device_unregister+0x34/0xc0 drivers/base/core.c:2697
 device_destroy+0x96/0xd0 drivers/base/core.c:3275
 tty_unregister_device+0x7e/0x1a0 drivers/tty/tty_io.c:3192
 hso_serial_tty_unregister drivers/net/usb/hso.c:2232 [inline]
 hso_create_bulk_serial_device drivers/net/usb/hso.c:2678 [inline]
 hso_probe.cold+0x6e/0x14c drivers/net/usb/hso.c:2944
 usb_probe_interface+0x310/0x800 drivers/usb/core/driver.c:374
 really_probe+0x290/0xac0 drivers/base/dd.c:551
 driver_probe_device+0x223/0x350 drivers/base/dd.c:724
 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:831
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431
 __device_attach+0x217/0x390 drivers/base/dd.c:897
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0x1459/0x1bf0 drivers/base/core.c:2487
 usb_set_configuration+0xe47/0x17d0 drivers/usb/core/message.c:2023
 usb_generic_driver_probe+0x9d/0xe0 drivers/usb/core/generic.c:241
 usb_probe_device+0xd9/0x230 drivers/usb/core/driver.c:272
 really_probe+0x290/0xac0 drivers/base/dd.c:551
 driver_probe_device+0x223/0x350 drivers/base/dd.c:724
 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:831
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431
 __device_attach+0x217/0x390 drivers/base/dd.c:897
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0x1459/0x1bf0 drivers/base/core.c:2487
 usb_new_device.cold+0x540/0xcd0 drivers/usb/core/hub.c:2544
 hub_port_connect drivers/usb/core/hub.c:5191 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5331 [inline]
 port_event drivers/usb/core/hub.c:5477 [inline]
 hub_event+0x21cb/0x4300 drivers/usb/core/hub.c:5559
 process_one_work+0x94b/0x1620 kernel/workqueue.c:2264
 worker_thread+0x96/0xe20 kernel/workqueue.c:2410
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

The buggy address belongs to the object at ffff8881cd9f6000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 344 bytes inside of
 2048-byte region [ffff8881cd9f6000, ffff8881cd9f6800)
The buggy address belongs to the page:
page:ffffea0007367c00 refcount:1 mapcount:0 mapping:ffff8881da00c000 index:0x0 compound_mapcount: 0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da00c000
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881cd9f6000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881cd9f6080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881cd9f6100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff8881cd9f6180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881cd9f6200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

Crashes (57):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/03/17 01:35 https://github.com/google/kasan.git usb-fuzzer d6ff8147a51c 749688d2 .config console log report syz C ci2-upstream-usb
2020/03/08 15:45 https://github.com/google/kasan.git usb-fuzzer d6ff8147a51c 2e9971bb .config console log report syz C ci2-upstream-usb
2020/02/27 21:20 https://github.com/google/kasan.git usb-fuzzer d6ff8147a51c c88c7b75 .config console log report syz C ci2-upstream-usb
2020/07/16 06:45 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 313da01ad524 ada108d0 .config console log report ci2-upstream-usb
2020/07/08 19:59 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 768a07412843 9f9845eb .config console log report ci2-upstream-usb
2020/07/06 05:26 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 768a07412843 22f87567 .config console log report ci2-upstream-usb
2020/07/03 10:56 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 768a07412843 f30c14bf .config console log report ci2-upstream-usb
2020/06/27 01:17 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing fb5746826a0c ffec44b5 .config console log report ci2-upstream-usb
2020/06/12 09:41 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 819b58b0 .config console log report ci2-upstream-usb
2020/06/11 07:32 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 3ab7a05a .config console log report ci2-upstream-usb
2020/06/04 01:32 https://github.com/google/kasan.git usb-fuzzer 2089c6ed5a17 b0d1c0d5 .config console log report ci2-upstream-usb
2020/05/25 13:23 https://github.com/google/kasan.git usb-fuzzer 806d8acc2890 73964a9b .config console log report ci2-upstream-usb
2020/05/24 10:15 https://github.com/google/kasan.git usb-fuzzer 806d8acc2890 96c92ad3 .config console log report ci2-upstream-usb
2020/05/06 18:47 https://github.com/google/kasan.git usb-fuzzer 059e7e0ff26c 4618eb2d .config console log report ci2-upstream-usb
2020/04/17 08:21 https://github.com/google/kasan.git usb-fuzzer 0fa84af850a4 18397578 .config console log report ci2-upstream-usb
2020/04/17 00:11 https://github.com/google/kasan.git usb-fuzzer 0fa84af850a4 c743fcb3 .config console log report ci2-upstream-usb
2020/04/10 23:26 https://github.com/google/kasan.git usb-fuzzer 0fa84af850a4 a8c6a3f8 .config console log report ci2-upstream-usb
2020/04/07 12:21 https://github.com/google/kasan.git usb-fuzzer 0fa84af850a4 99a96044 .config console log report ci2-upstream-usb
2020/03/30 09:09 https://github.com/google/kasan.git usb-fuzzer 0fa84af850a4 c8d1cc20 .config console log report ci2-upstream-usb
2020/03/28 01:20 https://github.com/google/kasan.git usb-fuzzer e17994d1e7b1 831e9a81 .config console log report ci2-upstream-usb
2020/03/27 09:54 https://github.com/google/kasan.git usb-fuzzer e17994d1e7b1 9af8b4b3 .config console log report ci2-upstream-usb
2020/03/25 20:42 https://github.com/google/kasan.git usb-fuzzer e17994d1e7b1 e8e6c7d2 .config console log report ci2-upstream-usb
2020/03/25 06:25 https://github.com/google/kasan.git usb-fuzzer e17994d1e7b1 41f049cc .config console log report ci2-upstream-usb
2020/03/19 00:12 https://github.com/google/kasan.git usb-fuzzer d6ff8147a51c 2c31c529 .config console log report ci2-upstream-usb
2020/03/16 18:28 https://github.com/google/kasan.git usb-fuzzer d6ff8147a51c 749688d2 .config console log report ci2-upstream-usb
2020/03/05 13:06 https://github.com/google/kasan.git usb-fuzzer d6ff8147a51c b655d91b .config console log report ci2-upstream-usb
2020/03/03 20:03 https://github.com/google/kasan.git usb-fuzzer d6ff8147a51c 350a7a26 .config console log report ci2-upstream-usb
2020/02/26 23:49 https://github.com/google/kasan.git usb-fuzzer d6ff8147a51c 251aabb7 .config console log report ci2-upstream-usb
2020/02/22 14:23 https://github.com/google/kasan.git usb-fuzzer 307a2623c9d7 2c36e7a7 .config console log report ci2-upstream-usb
2020/02/21 05:49 https://github.com/google/kasan.git usb-fuzzer 7f0cd6c7c423 bd2a74a3 .config console log report ci2-upstream-usb
2020/02/20 13:56 https://github.com/google/kasan.git usb-fuzzer 7f0cd6c7c423 81230308 .config console log report ci2-upstream-usb
2020/02/12 17:36 https://github.com/google/kasan.git usb-fuzzer 7f0cd6c7c423 84f4fc8a .config console log report ci2-upstream-usb
2020/02/11 05:46 https://github.com/google/kasan.git usb-fuzzer 7f0cd6c7c423 d9e55b05 .config console log report ci2-upstream-usb
2020/02/10 19:17 https://github.com/google/kasan.git usb-fuzzer e5cd56e94edd d9e55b05 .config console log report ci2-upstream-usb
2020/02/09 22:44 https://github.com/google/kasan.git usb-fuzzer e5cd56e94edd 35f5e45e .config console log report ci2-upstream-usb
2020/02/08 07:51 https://github.com/google/kasan.git usb-fuzzer e5cd56e94edd 06150bf1 .config console log report ci2-upstream-usb
2020/02/07 03:20 https://github.com/google/kasan.git usb-fuzzer e5cd56e94edd 06150bf1 .config console log report ci2-upstream-usb
2020/02/06 15:11 https://github.com/google/kasan.git usb-fuzzer e5cd56e94edd 5be3a391 .config console log report ci2-upstream-usb
2020/02/06 13:49 https://github.com/google/kasan.git usb-fuzzer e5cd56e94edd 5be3a391 .config console log report ci2-upstream-usb
2020/01/17 13:53 https://github.com/google/kasan.git usb-fuzzer 4cc301ee04d9 3de7aabb .config console log report ci2-upstream-usb
2020/01/09 16:19 https://github.com/google/kasan.git usb-fuzzer ae1794106b94 4de4e9f0 .config console log report ci2-upstream-usb
2020/01/06 22:22 https://github.com/google/kasan.git usb-fuzzer ecdf2214f472 53430d97 .config console log report ci2-upstream-usb
2019/12/31 00:14 https://github.com/google/kasan.git usb-fuzzer ecdf2214f472 6b36d338 .config console log report ci2-upstream-usb
2019/12/28 11:05 https://github.com/google/kasan.git usb-fuzzer ecdf2214f472 af6b8ef8 .config console log report ci2-upstream-usb
2019/11/28 09:52 https://github.com/google/kasan.git usb-fuzzer da06441bb485 97264cb1 .config console log report ci2-upstream-usb
2019/11/26 19:45 https://github.com/google/kasan.git usb-fuzzer da06441bb485 1048481f .config console log report ci2-upstream-usb
2019/11/20 07:14 https://github.com/google/kasan.git usb-fuzzer 46178223c0ca 432c7650 .config console log report ci2-upstream-usb
2019/11/15 06:22 https://github.com/google/kasan.git usb-fuzzer 3183c03757f8 79248ee8 .config console log report ci2-upstream-usb
2019/10/26 05:16 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 413926c5 .config console log report ci2-upstream-usb
2019/10/23 19:44 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 b602d64b .config console log report ci2-upstream-usb
2019/10/15 08:27 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 05ad7292 .config console log report ci2-upstream-usb
2019/10/13 05:08 https://github.com/google/kasan.git usb-fuzzer 58d5f26a5584 426631dd .config console log report ci2-upstream-usb
2019/10/08 20:43 https://github.com/google/kasan.git usb-fuzzer 58d5f26a5584 b1ebbfef .config console log report ci2-upstream-usb
2019/10/08 10:40 https://github.com/google/kasan.git usb-fuzzer 58d5f26a5584 28ac6e64 .config console log report ci2-upstream-usb
2019/10/06 02:22 https://github.com/google/kasan.git usb-fuzzer 58d5f26a5584 f3f7d9c8 .config console log report ci2-upstream-usb
2019/10/05 02:41 https://github.com/google/kasan.git usb-fuzzer 58d5f26a5584 f3f7d9c8 .config console log report ci2-upstream-usb
2019/09/27 22:14 https://github.com/google/kasan.git usb-fuzzer 2994c07743fe d8074e0b .config console log report ci2-upstream-usb
* Struck through repros no longer work on HEAD.