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KASAN: slab-out-of-bounds Read in mon_bin_event

Status: upstream: reported C repro on 2025/09/06 17:28
Bug presence: origin:downstream
[Documentation on labels]
Reported-by: syzbot+3c5177fe1485cc4705d9@syzkaller.appspotmail.com
First crash: 72d, last: 4d15h
▶ ▼ Bug presence (3)
Date Name Commit Repro Result
2025/09/10 android13-5.15-lts (ToT) 1cd26e1d9a89 C [report] lost connection to test machine
2025/09/10 lts (merge base) 7a6c2d093c45 C Didn't crash
2025/09/10 upstream (ToT) 9dd1835ecda5 C Didn't crash
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-12 KASAN: slab-out-of-bounds Read in mon_bin_event origin:upstream 17 C 56 24d 73d 0/1 premoderation: reported C repro on 2025/06/29 20:21
upstream KASAN: slab-out-of-bounds Read in mon_bin_event usb 17 C 21 56d 70d 0/29 upstream: reported C repro on 2025/07/02 17:42
android-5-10 KASAN: slab-out-of-bounds Read in mon_bin_event 17 C 60 16d 71d 0/2 upstream: reported C repro on 2025/07/01 18:26
android-6-1 KASAN: slab-out-of-bounds Read in mon_bin_event origin:lts 17 C 5 13d 53d 0/2 upstream: reported C repro on 2025/07/20 05:22

Sample crash report:
microsoft 0003:045E:07DA.0002: unknown main item tag 0x0
microsoft 0003:045E:07DA.0002: unknown main item tag 0x0
microsoft 0003:045E:07DA.0002: unsupported Resolution Multiplier 0
==================================================================
BUG: KASAN: slab-out-of-bounds in mon_copy_to_buff drivers/usb/mon/mon_bin.c:249 [inline]
BUG: KASAN: slab-out-of-bounds in mon_bin_get_data drivers/usb/mon/mon_bin.c:417 [inline]
BUG: KASAN: slab-out-of-bounds in mon_bin_event+0x1307/0x24e0 drivers/usb/mon/mon_bin.c:603
Read of size 2944 at addr ffff888105fa3641 by task kworker/0:2/60

CPU: 0 PID: 60 Comm: kworker/0:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0xee/0x150 lib/dump_stack.c:106
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0xf1/0x140 mm/kasan/report.c:444
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x280/0x290 mm/kasan/generic.c:189
 memcpy+0x2d/0x70 mm/kasan/shadow.c:65
 mon_copy_to_buff drivers/usb/mon/mon_bin.c:249 [inline]
 mon_bin_get_data drivers/usb/mon/mon_bin.c:417 [inline]
 mon_bin_event+0x1307/0x24e0 drivers/usb/mon/mon_bin.c:603
 mon_bin_submit+0x27/0x30 drivers/usb/mon/mon_bin.c:623
 mon_bus_submit drivers/usb/mon/mon_main.c:91 [inline]
 mon_submit+0x185/0x200 drivers/usb/mon/mon_main.c:103
 usbmon_urb_submit include/linux/usb/hcd.h:733 [inline]
 usb_hcd_submit_urb+0x117/0x1780 drivers/usb/core/hcd.c:1544
 usb_submit_urb+0x1226/0x1900 drivers/usb/core/urb.c:594
 usb_start_wait_urb+0x117/0x2f0 drivers/usb/core/message.c:58
 usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
 usb_control_msg+0x241/0x3f0 drivers/usb/core/message.c:153
 usbhid_set_raw_report drivers/hid/usbhid/hid-core.c:926 [inline]
 usbhid_raw_request+0x453/0x580 drivers/hid/usbhid/hid-core.c:1297
 __hid_request+0x1d2/0x390 drivers/hid/hid-core.c:1737
 hidinput_change_resolution_multipliers drivers/hid/hid-input.c:1711 [inline]
 hidinput_connect+0x1e20/0x2ce0 drivers/hid/hid-input.c:2027
 hid_connect+0x458/0xdf0 drivers/hid/hid-core.c:1968
 hid_hw_start+0xaa/0x130 drivers/hid/hid-core.c:2075
 ms_probe+0x190/0x460 drivers/hid/hid-microsoft.c:391
 hid_device_probe+0x287/0x380 drivers/hid/hid-core.c:2303
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x285/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:785
 __device_attach_driver+0x2a6/0x460 drivers/base/dd.c:907
 bus_for_each_drv+0x175/0x200 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xc0/0x1e0 drivers/base/bus.c:489
 device_add+0xb31/0xed0 drivers/base/core.c:3422
 hid_add_device+0x356/0x4b0 drivers/hid/hid-core.c:2453
 usbhid_probe+0xb2e/0xee0 drivers/hid/usbhid/hid-core.c:1427
 usb_probe_interface+0x5ff/0xae0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x285/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:785
 __device_attach_driver+0x2a6/0x460 drivers/base/dd.c:907
 bus_for_each_drv+0x175/0x200 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xc0/0x1e0 drivers/base/bus.c:489
 device_add+0xb31/0xed0 drivers/base/core.c:3422
 usb_set_configuration+0x19c2/0x1f10 drivers/usb/core/message.c:2165
 usb_generic_driver_probe+0x91/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x148/0x260 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x285/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:785
 __device_attach_driver+0x2a6/0x460 drivers/base/dd.c:907
 bus_for_each_drv+0x175/0x200 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xc0/0x1e0 drivers/base/bus.c:489
 device_add+0xb31/0xed0 drivers/base/core.c:3422
 usb_new_device+0xd06/0x1620 drivers/usb/core/hub.c:2610
 hub_port_connect drivers/usb/core/hub.c:5525 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5665 [inline]
 port_event drivers/usb/core/hub.c:5815 [inline]
 hub_event+0x27d8/0x42c0 drivers/usb/core/hub.c:5897
 process_one_work+0x6be/0xba0 kernel/workqueue.c:2325
 worker_thread+0xa59/0x1200 kernel/workqueue.c:2472
 kthread+0x411/0x500 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Allocated by task 60:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:433 [inline]
 ____kasan_kmalloc mm/kasan/common.c:512 [inline]
 __kasan_kmalloc+0xda/0x110 mm/kasan/common.c:521
 kasan_kmalloc include/linux/kasan.h:227 [inline]
 __kmalloc+0x13d/0x2c0 mm/slub.c:4431
 kmalloc include/linux/slab.h:621 [inline]
 kzalloc include/linux/slab.h:747 [inline]
 hid_alloc_report_buf drivers/hid/hid-core.c:1663 [inline]
 __hid_request+0x9a/0x390 drivers/hid/hid-core.c:1728
 hidinput_change_resolution_multipliers drivers/hid/hid-input.c:1711 [inline]
 hidinput_connect+0x1e20/0x2ce0 drivers/hid/hid-input.c:2027
 hid_connect+0x458/0xdf0 drivers/hid/hid-core.c:1968
 hid_hw_start+0xaa/0x130 drivers/hid/hid-core.c:2075
 ms_probe+0x190/0x460 drivers/hid/hid-microsoft.c:391
 hid_device_probe+0x287/0x380 drivers/hid/hid-core.c:2303
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x285/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:785
 __device_attach_driver+0x2a6/0x460 drivers/base/dd.c:907
 bus_for_each_drv+0x175/0x200 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xc0/0x1e0 drivers/base/bus.c:489
 device_add+0xb31/0xed0 drivers/base/core.c:3422
 hid_add_device+0x356/0x4b0 drivers/hid/hid-core.c:2453
 usbhid_probe+0xb2e/0xee0 drivers/hid/usbhid/hid-core.c:1427
 usb_probe_interface+0x5ff/0xae0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x285/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:785
 __device_attach_driver+0x2a6/0x460 drivers/base/dd.c:907
 bus_for_each_drv+0x175/0x200 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xc0/0x1e0 drivers/base/bus.c:489
 device_add+0xb31/0xed0 drivers/base/core.c:3422
 usb_set_configuration+0x19c2/0x1f10 drivers/usb/core/message.c:2165
 usb_generic_driver_probe+0x91/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x148/0x260 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x285/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:785
 __device_attach_driver+0x2a6/0x460 drivers/base/dd.c:907
 bus_for_each_drv+0x175/0x200 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xc0/0x1e0 drivers/base/bus.c:489
 device_add+0xb31/0xed0 drivers/base/core.c:3422
 usb_new_device+0xd06/0x1620 drivers/usb/core/hub.c:2610
 hub_port_connect drivers/usb/core/hub.c:5525 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5665 [inline]
 port_event drivers/usb/core/hub.c:5815 [inline]
 hub_event+0x27d8/0x42c0 drivers/usb/core/hub.c:5897
 process_one_work+0x6be/0xba0 kernel/workqueue.c:2325
 worker_thread+0xa59/0x1200 kernel/workqueue.c:2472
 kthread+0x411/0x500 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

The buggy address belongs to the object at ffff888105fa3640
 which belongs to the cache kmalloc-8 of size 8
The buggy address is located 1 bytes inside of
 8-byte region [ffff888105fa3640, ffff888105fa3648)
The buggy address belongs to the page:
page:ffffea000417e8c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105fa3
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 dead000000000100 dead000000000122 ffff888100042300
raw: 0000000000000000 0000000080660066 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 1340279454, free_ts 0
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2605
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2611
 get_page_from_freelist+0x2cc5/0x2d50 mm/page_alloc.c:4485
 __alloc_pages+0x18f/0x440 mm/page_alloc.c:5795
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1932 [inline]
 new_slab+0xa1/0x4d0 mm/slub.c:1995
 ___slab_alloc+0x381/0x810 mm/slub.c:3028
 __slab_alloc+0x49/0x90 mm/slub.c:3115
 slab_alloc_node mm/slub.c:3206 [inline]
 slab_alloc mm/slub.c:3250 [inline]
 __kmalloc+0x16a/0x2c0 mm/slub.c:4427
 kmalloc include/linux/slab.h:621 [inline]
 kzalloc include/linux/slab.h:747 [inline]
 acpi_os_allocate_zeroed include/acpi/platform/aclinuxex.h:57 [inline]
 acpi_ns_internalize_name+0x2bc/0x3a0 drivers/acpi/acpica/nsutils.c:331
 acpi_ns_get_node_unlocked drivers/acpi/acpica/nsutils.c:666 [inline]
 acpi_ns_get_node+0x1a0/0x340 drivers/acpi/acpica/nsutils.c:726
 acpi_get_handle+0x17e/0x290 drivers/acpi/acpica/nsxfname.c:98
 acpi_has_method+0x83/0xd0 drivers/acpi/utils.c:553
 acpi_bay_match+0x78/0x1d0 drivers/acpi/scan.c:1150
 acpi_set_pnp_ids drivers/acpi/scan.c:1359 [inline]
 acpi_init_device_object+0x1bd2/0x2580 drivers/acpi/scan.c:1751
 acpi_add_single_object+0xee/0x16f0 drivers/acpi/scan.c:1797
 acpi_bus_check_add+0x314/0x790 drivers/acpi/scan.c:2056
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888105fa3500: fb fc fc fc fc fb fc fc fc fc fb fc fc fc fc fb
 ffff888105fa3580: fc fc fc fc fb fc fc fc fc fb fc fc fc fc fb fc
>ffff888105fa3600: fc fc fc fb fc fc fc fc 07 fc fc fc fc fb fc fc
                                           ^
 ffff888105fa3680: fc fc fb fc fc fc fc fb fc fc fc fc fb fc fc fc
 ffff888105fa3700: fc fb fc fc fc fc fb fc fc fc fc fb fc fc fc fc
==================================================================
microsoft 0003:045E:07DA.0002: No inputs registered, leaving
microsoft 0003:045E:07DA.0002: hidraw2: USB HID v0.00 Device [HID 045e:07da] on usb-dummy_hcd.1-1/input0
microsoft 0003:045E:07DA.0002: no inputs found
microsoft 0003:045E:07DA.0002: could not initialize ff, continuing anyway
usb 2-1: USB disconnect, device number 2
usb 2-1: new high-speed USB device number 3 using dummy_hcd
usb 2-1: Using ep0 maxpacket: 16
usb 2-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 2-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0
usb 2-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 9
usb 2-1: New USB device found, idVendor=045e, idProduct=07da, bcdDevice= 0.00
usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 2-1: config 0 descriptor??
microsoft 0003:045E:07DA.0008: ignoring exceeding usage max
microsoft 0003:045E:07DA.0008: unknown main item tag 0x0
microsoft 0003:045E:07DA.0008: unknown main item tag 0x0
microsoft 0003:045E:07DA.0008: unknown main item tag 0x0
microsoft 0003:045E:07DA.0008: unknown main item tag 0x0
microsoft 0003:045E:07DA.0008: unknown main item tag 0x0
microsoft 0003:045E:07DA.0008: unsupported Resolution Multiplier 0
microsoft 0003:045E:07DA.0008: No inputs registered, leaving
microsoft 0003:045E:07DA.0008: hidraw1: USB HID v0.00 Device [HID 045e:07da] on usb-dummy_hcd.1-1/input0
microsoft 0003:045E:07DA.0008: no inputs found
microsoft 0003:045E:07DA.0008: could not initialize ff, continuing anyway
usb 2-1: USB disconnect, device number 3
usb 7-1: new high-speed USB device number 4 using dummy_hcd
usb 7-1: Using ep0 maxpacket: 16
usb 7-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 7-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0
usb 7-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 9
usb 7-1: New USB device found, idVendor=045e, idProduct=07da, bcdDevice= 0.00
usb 7-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 7-1: config 0 descriptor??
microsoft 0003:045E:07DA.000E: ignoring exceeding usage max
microsoft 0003:045E:07DA.000E: unknown main item tag 0x0
microsoft 0003:045E:07DA.000E: unknown main item tag 0x0
microsoft 0003:045E:07DA.000E: unknown main item tag 0x0
microsoft 0003:045E:07DA.000E: unknown main item tag 0x0
microsoft 0003:045E:07DA.000E: unknown main item tag 0x0
microsoft 0003:045E:07DA.000E: unsupported Resolution Multiplier 0
microsoft 0003:045E:07DA.000E: No inputs registered, leaving
microsoft 0003:045E:07DA.000E: hidraw0: USB HID v0.00 Device [HID 045e:07da] on usb-dummy_hcd.6-1/input0
microsoft 0003:045E:07DA.000E: no inputs found
microsoft 0003:045E:07DA.000E: could not initialize ff, continuing anyway
usb 7-1: USB disconnect, device number 4

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/09/06 17:21 android13-5.15-lts da3dbfdd15be d291dd2d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: slab-out-of-bounds Read in mon_bin_event
2025/09/06 16:48 android13-5.15-lts da3dbfdd15be d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: slab-out-of-bounds Read in mon_bin_event
2025/06/30 17:26 android13-5.15-lts 0d918fa8e88d 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: slab-out-of-bounds Read in mon_bin_event
* Struck through repros no longer work on HEAD.