syzbot

 sign-in | mailing list | source | docs
🐞 Open [984] ≡ Subsystems 🐞 Fixed [5216] 🐞 Invalid [12476] ⬇ Missing Backports [82] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes 💬 Send us feedback

KASAN: slab-out-of-bounds Write in ax_probe

Status: closed as dup on 2019/10/03 19:01
Subsystems: input usb
[Documentation on labels]
Reported-by: syzbot+1e86e2ccce227cca899b@syzkaller.appspotmail.com
First crash: 1715d, last: 1629d
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
KASAN: slab-out-of-bounds Write in ga_probe input C 5 1655d 1677d
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
KASAN: slab-out-of-bounds Write in ga_probe 4 (6) 2019/09/19 19:19
Reminder: 52 active syzbot reports in usb subsystem 1 (1) 2019/08/22 03:28
KASAN: slab-out-of-bounds Write in ax_probe 0 (1) 2019/08/12 12:18

Sample crash report:
usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 1-1: New USB device found, idVendor=1a34, idProduct=f705, bcdDevice= 0.00
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
acrux 0003:1A34:F705.0001: unknown main item tag 0x2
acrux 0003:1A34:F705.0001: unknown main item tag 0x2
acrux 0003:1A34:F705.0001: hidraw0: USB HID v0.00 Device [HID 1a34:f705] on usb-dummy_hcd.0-1/input0
==================================================================
BUG: KASAN: slab-out-of-bounds in set_bit include/asm-generic/bitops-instrumented.h:28 [inline]
BUG: KASAN: slab-out-of-bounds in axff_init drivers/hid/hid-axff.c:96 [inline]
BUG: KASAN: slab-out-of-bounds in ax_probe+0x369/0x540 drivers/hid/hid-axff.c:138
Write of size 8 at addr ffff8881d538acc0 by task kworker/0:1/12

CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.4.0-rc3+ #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+0xca/0x13e lib/dump_stack.c:113
 print_address_description.constprop.0+0x36/0x50 mm/kasan/report.c:374
 __kasan_report.cold+0x1a/0x33 mm/kasan/report.c:506
 kasan_report+0xe/0x20 mm/kasan/common.c:634
 check_memory_region_inline mm/kasan/generic.c:185 [inline]
 check_memory_region+0x128/0x190 mm/kasan/generic.c:192
 set_bit include/asm-generic/bitops-instrumented.h:28 [inline]
 axff_init drivers/hid/hid-axff.c:96 [inline]
 ax_probe+0x369/0x540 drivers/hid/hid-axff.c:138
 hid_device_probe+0x2be/0x3f0 drivers/hid/hid-core.c:2209
 really_probe+0x281/0x6d0 drivers/base/dd.c:548
 driver_probe_device+0x104/0x210 drivers/base/dd.c:721
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
 __device_attach+0x217/0x360 drivers/base/dd.c:894
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
 device_add+0xae6/0x16f0 drivers/base/core.c:2201
 hid_add_device drivers/hid/hid-core.c:2365 [inline]
 hid_add_device+0x33c/0x9a0 drivers/hid/hid-core.c:2314
 usbhid_probe+0xa81/0xfa0 drivers/hid/usbhid/hid-core.c:1386
 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
 really_probe+0x281/0x6d0 drivers/base/dd.c:548
 driver_probe_device+0x104/0x210 drivers/base/dd.c:721
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
 __device_attach+0x217/0x360 drivers/base/dd.c:894
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
 device_add+0xae6/0x16f0 drivers/base/core.c:2201
 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266
 really_probe+0x281/0x6d0 drivers/base/dd.c:548
 driver_probe_device+0x104/0x210 drivers/base/dd.c:721
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
 __device_attach+0x217/0x360 drivers/base/dd.c:894
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
 device_add+0xae6/0x16f0 drivers/base/core.c:2201
 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2536
 hub_port_connect drivers/usb/core/hub.c:5183 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5323 [inline]
 port_event drivers/usb/core/hub.c:5469 [inline]
 hub_event+0x1dd0/0x37e0 drivers/usb/core/hub.c:5551
 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 kernel/workqueue.c:2415
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Allocated by task 12:
 save_stack+0x1b/0x80 mm/kasan/common.c:69
 set_track mm/kasan/common.c:77 [inline]
 __kasan_kmalloc mm/kasan/common.c:510 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:483
 kmalloc include/linux/slab.h:556 [inline]
 kzalloc include/linux/slab.h:690 [inline]
 hidraw_connect+0x4b/0x3e0 drivers/hid/hidraw.c:513
 hid_connect+0x5c7/0xbb0 drivers/hid/hid-core.c:1885
 hid_hw_start drivers/hid/hid-core.c:1981 [inline]
 hid_hw_start+0xa2/0x130 drivers/hid/hid-core.c:1972
 ax_probe+0x52/0x540 drivers/hid/hid-axff.c:132
 hid_device_probe+0x2be/0x3f0 drivers/hid/hid-core.c:2209
 really_probe+0x281/0x6d0 drivers/base/dd.c:548
 driver_probe_device+0x104/0x210 drivers/base/dd.c:721
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
 __device_attach+0x217/0x360 drivers/base/dd.c:894
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
 device_add+0xae6/0x16f0 drivers/base/core.c:2201
 hid_add_device drivers/hid/hid-core.c:2365 [inline]
 hid_add_device+0x33c/0x9a0 drivers/hid/hid-core.c:2314
 usbhid_probe+0xa81/0xfa0 drivers/hid/usbhid/hid-core.c:1386
 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
 really_probe+0x281/0x6d0 drivers/base/dd.c:548
 driver_probe_device+0x104/0x210 drivers/base/dd.c:721
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
 __device_attach+0x217/0x360 drivers/base/dd.c:894
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
 device_add+0xae6/0x16f0 drivers/base/core.c:2201
 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266
 really_probe+0x281/0x6d0 drivers/base/dd.c:548
 driver_probe_device+0x104/0x210 drivers/base/dd.c:721
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
 __device_attach+0x217/0x360 drivers/base/dd.c:894
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
 device_add+0xae6/0x16f0 drivers/base/core.c:2201
 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2536
 hub_port_connect drivers/usb/core/hub.c:5183 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5323 [inline]
 port_event drivers/usb/core/hub.c:5469 [inline]
 hub_event+0x1dd0/0x37e0 drivers/usb/core/hub.c:5551
 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 kernel/workqueue.c:2415
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Freed by task 101:
 save_stack+0x1b/0x80 mm/kasan/common.c:69
 set_track mm/kasan/common.c:77 [inline]
 kasan_set_free_info mm/kasan/common.c:332 [inline]
 __kasan_slab_free+0x130/0x180 mm/kasan/common.c:471
 slab_free_hook mm/slub.c:1424 [inline]
 slab_free_freelist_hook mm/slub.c:1475 [inline]
 slab_free mm/slub.c:3018 [inline]
 kfree+0xe4/0x320 mm/slub.c:3967
 urb_destroy drivers/usb/core/urb.c:26 [inline]
 kref_put include/linux/kref.h:65 [inline]
 usb_free_urb.part.0+0x7a/0xc0 drivers/usb/core/urb.c:95
 usb_free_urb+0x1b/0x30 drivers/usb/core/urb.c:94
 usb_start_wait_urb+0x1e5/0x2b0 drivers/usb/core/message.c:79
 usb_internal_control_msg drivers/usb/core/message.c:101 [inline]
 usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152
 get_port_status drivers/usb/core/hub.c:569 [inline]
 hub_ext_port_status+0x125/0x460 drivers/usb/core/hub.c:586
 hub_port_status drivers/usb/core/hub.c:608 [inline]
 hub_activate+0x497/0x1570 drivers/usb/core/hub.c:1111
 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 kernel/workqueue.c:2415
 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 ffff8881d538ac00
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 0 bytes to the right of
 192-byte region [ffff8881d538ac00, ffff8881d538acc0)
The buggy address belongs to the page:
page:ffffea000754e280 refcount:1 mapcount:0 mapping:ffff8881da002a00 index:0x0
flags: 0x200000000000200(slab)
raw: 0200000000000200 ffffea00075499c0 0000000c0000000c ffff8881da002a00
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881d538ab80: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881d538ac00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881d538ac80: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
                                           ^
 ffff8881d538ad00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881d538ad80: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc
==================================================================

Crashes (70):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/10/23 02:57 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 d0686497 .config console log report syz C ci2-upstream-usb
2019/10/02 18:03 https://github.com/google/kasan.git usb-fuzzer 58d5f26a5584 2e29b534 .config console log report syz C ci2-upstream-usb
2019/09/30 15:34 https://github.com/google/kasan.git usb-fuzzer 2994c07743fe c7a4fb99 .config console log report syz C ci2-upstream-usb
2019/09/27 00:52 https://github.com/google/kasan.git usb-fuzzer 2994c07743fe 2f1548bc .config console log report syz C ci2-upstream-usb
2019/09/21 10:27 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 d96e88f3 .config console log report syz C ci2-upstream-usb
2019/08/23 22:08 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 78ded196 .config console log report syz C ci2-upstream-usb
2019/08/15 02:36 https://github.com/google/kasan.git usb-fuzzer d0847550e22d 0d298d6b .config console log report syz C ci2-upstream-usb
2019/08/09 19:51 https://github.com/google/kasan.git usb-fuzzer e96407b49762 aff9e255 .config console log report syz C ci2-upstream-usb
2019/08/21 06:22 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 6b8391d0 .config console log report syz ci2-upstream-usb
2019/11/04 03:20 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 b35fad31 .config console log report ci2-upstream-usb
2019/11/04 01:55 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 b35fad31 .config console log report ci2-upstream-usb
2019/11/02 17:43 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 997ccc67 .config console log report ci2-upstream-usb
2019/11/02 07:36 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 997ccc67 .config console log report ci2-upstream-usb
2019/11/01 12:11 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 a41ca8fa .config console log report ci2-upstream-usb
2019/11/01 07:41 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 a41ca8fa .config console log report ci2-upstream-usb
2019/11/01 05:18 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 a41ca8fa .config console log report ci2-upstream-usb
2019/11/01 00:43 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 a41ca8fa .config console log report ci2-upstream-usb
2019/10/31 21:37 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 a41ca8fa .config console log report ci2-upstream-usb
2019/10/31 19:02 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 a41ca8fa .config console log report ci2-upstream-usb
2019/10/30 19:38 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 5ea87a66 .config console log report ci2-upstream-usb
2019/10/29 15:18 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 5ea87a66 .config console log report ci2-upstream-usb
2019/10/29 04:31 https://github.com/google/kasan.git usb-fuzzer ff6409a6ec35 5ea87a66 .config console log report ci2-upstream-usb
2019/10/28 15:49 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/28 13:59 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/28 12:35 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/28 11:34 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/28 08:08 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/28 06:26 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/28 04:53 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/28 01:55 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/28 00:32 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/27 16:54 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/27 13:58 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/27 10:16 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/27 07:03 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/27 05:15 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/27 04:13 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/26 23:07 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/26 22:15 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/26 20:43 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/26 15:42 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/26 12:31 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 25bb509e .config console log report ci2-upstream-usb
2019/10/26 09:25 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 413926c5 .config console log report ci2-upstream-usb
2019/10/26 03:34 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 413926c5 .config console log report ci2-upstream-usb
2019/10/26 00:53 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 413926c5 .config console log report ci2-upstream-usb
2019/10/25 21:54 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 04ca72cd .config console log report ci2-upstream-usb
2019/10/25 10:49 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 d01bb02a .config console log report ci2-upstream-usb
2019/10/25 09:03 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 d01bb02a .config console log report ci2-upstream-usb
2019/10/25 06:29 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 d01bb02a .config console log report ci2-upstream-usb
2019/10/24 20:59 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 d01bb02a .config console log report ci2-upstream-usb
2019/10/24 18:58 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 d01bb02a .config console log report ci2-upstream-usb
2019/10/24 16:20 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 d01bb02a .config console log report ci2-upstream-usb
2019/10/24 06:53 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 b602d64b .config console log report ci2-upstream-usb
2019/10/23 23:46 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 b602d64b .config console log report ci2-upstream-usb
2019/10/23 16:42 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 b602d64b .config console log report ci2-upstream-usb
2019/10/23 08:51 https://github.com/google/kasan.git usb-fuzzer 22be26f76193 d0686497 .config console log report ci2-upstream-usb
2019/09/20 07:51 https://github.com/google/kasan.git usb-fuzzer e0bd8d794fc9 4d3ae0b7 .config console log report ci2-upstream-usb
2019/08/30 12:53 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 cd626f3b .config console log report ci2-upstream-usb
2019/08/29 12:56 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 cd626f3b .config console log report ci2-upstream-usb
2019/08/29 06:49 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 40203c15 .config console log report ci2-upstream-usb
2019/08/28 02:53 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 fd37b39e .config console log report ci2-upstream-usb
2019/08/27 17:22 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 d21c5d9d .config console log report ci2-upstream-usb
2019/08/26 12:55 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 d21c5d9d .config console log report ci2-upstream-usb
2019/08/24 15:50 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 78ded196 .config console log report ci2-upstream-usb
2019/08/22 10:43 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 4ea67ff8 .config console log report ci2-upstream-usb
2019/08/18 02:36 https://github.com/google/kasan.git usb-fuzzer d0847550e22d 55bf8926 .config console log report ci2-upstream-usb
2019/08/14 14:20 https://github.com/google/kasan.git usb-fuzzer d0847550e22d 5576551b .config console log report ci2-upstream-usb
* Struck through repros no longer work on HEAD.