==================================================================
BUG: KASAN: use-after-free in usbhid_power+0x7c/0xd0 drivers/hid/usbhid/hid-core.c:1284
Read of size 8 at addr ffff888106274008 by task syz.5.20/413
CPU: 1 UID: 0 PID: 413 Comm: syz.5.20 Not tainted syzkaller #0 1f46b48b3a0ef7537d643c2c4b1d5e30032b8167
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
print_address_description+0x71/0x210 mm/kasan/report.c:377
print_report+0x4a/0x70 mm/kasan/report.c:481
kasan_report+0x162/0x1a0 mm/kasan/report.c:594
__asan_report_load8_noabort+0x18/0x20 mm/kasan/report_generic.c:381
usbhid_power+0x7c/0xd0 drivers/hid/usbhid/hid-core.c:1284
hid_hw_power include/linux/hid.h:1174 [inline]
hidraw_open+0x254/0x960 drivers/hid/hidraw.c:302
chrdev_open+0x4eb/0x610 fs/char_dev.c:414
do_dentry_open+0x97c/0x1510 fs/open.c:954
vfs_open+0x86/0x240 fs/open.c:1086
do_open fs/namei.c:3782 [inline]
path_openat+0x2c49/0x35a0 fs/namei.c:3941
do_filp_open+0x1f2/0x440 fs/namei.c:3968
do_sys_openat2+0x134/0x1d0 fs/open.c:1434
do_sys_open fs/open.c:1449 [inline]
__do_sys_openat fs/open.c:1465 [inline]
__se_sys_openat fs/open.c:1460 [inline]
__x64_sys_openat+0x13a/0x170 fs/open.c:1460
x64_sys_call+0xe69/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:258
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fe2d575e98e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fe2d6743b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fe2d67446c0 RCX: 00007fe2d575e98e
RDX: 000000000000bb02 RSI: 00007fe2d6743c00 RDI: ffffffffffffff9c
RBP: 00007fe2d6743c00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007fe2d5a26038 R14: 00007fe2d5a25fa0 R15: 00007ffd66acbe58
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888106275c00 pfn:0x106274
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffffea000431f208 ffff8881f6f723a0 0000000000000000
raw: ffff888106275c00 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x192c00(GFP_NOIO|__GFP_NOWARN|__GFP_NORETRY|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 384, tgid 384 (kworker/1:2), ts 36410484403, free_ts 36410504593
set_page_owner include/linux/page_owner.h:35 [inline]
post_alloc_hook+0x37d/0x3b0 mm/page_alloc.c:1863
prep_new_page+0x2d/0x180 mm/page_alloc.c:1871
get_page_from_freelist+0x4aea/0x4ba0 mm/page_alloc.c:3948
__alloc_pages_noprof+0x35a/0x7e0 mm/page_alloc.c:5315
__alloc_pages_node_noprof include/linux/gfp.h:273 [inline]
alloc_pages_node_noprof include/linux/gfp.h:300 [inline]
alloc_pages_noprof include/linux/gfp.h:317 [inline]
stack_depot_save_flags+0x672/0x800 lib/stackdepot.c:627
kasan_save_stack mm/kasan/common.c:50 [inline]
kasan_save_track+0x4f/0x80 mm/kasan/common.c:70
kasan_save_alloc_info+0x3a/0x50 mm/kasan/generic.c:565
poison_kmalloc_redzone mm/kasan/common.c:379 [inline]
__kasan_kmalloc+0x96/0xb0 mm/kasan/common.c:396
kasan_kmalloc include/linux/kasan.h:261 [inline]
__kmalloc_cache_noprof+0x23c/0x470 mm/slub.c:4426
kmalloc_noprof include/linux/slab.h:882 [inline]
usb_control_msg+0x83/0x490 drivers/usb/core/message.c:157
get_port_status drivers/usb/core/hub.c:614 [inline]
hub_ext_port_status+0x10d/0x830 drivers/usb/core/hub.c:631
usb_hub_port_status drivers/usb/core/hub.c:681 [inline]
hub_port_debounce+0x1ca/0x260 drivers/usb/core/hub.c:4710
hub_port_debounce_be_stable drivers/usb/core/hub.h:184 [inline]
hub_port_connect drivers/usb/core/hub.c:5426 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5714 [inline]
port_event drivers/usb/core/hub.c:5878 [inline]
hub_event+0x1b66/0x4360 drivers/usb/core/hub.c:5960
process_one_work kernel/workqueue.c:3273 [inline]
process_scheduled_works+0x7f4/0x1060 kernel/workqueue.c:3354
worker_thread+0xc99/0x13f0 kernel/workqueue.c:3435
kthread+0x2c4/0x360 kernel/kthread.c:389
page last free pid 384 tgid 384 stack trace:
reset_page_owner include/linux/page_owner.h:28 [inline]
free_pages_prepare mm/page_alloc.c:1390 [inline]
free_unref_page+0xbb8/0xf70 mm/page_alloc.c:2876
__free_pages+0x6b/0x3b0 mm/page_alloc.c:5402
free_pages+0x86/0x90 mm/page_alloc.c:5415
stack_depot_save_flags+0x3ab/0x800 lib/stackdepot.c:674
kasan_save_stack mm/kasan/common.c:50 [inline]
kasan_save_track+0x4f/0x80 mm/kasan/common.c:70
kasan_save_alloc_info+0x3a/0x50 mm/kasan/generic.c:565
poison_kmalloc_redzone mm/kasan/common.c:379 [inline]
__kasan_kmalloc+0x96/0xb0 mm/kasan/common.c:396
kasan_kmalloc include/linux/kasan.h:261 [inline]
__kmalloc_cache_noprof+0x23c/0x470 mm/slub.c:4426
kmalloc_noprof include/linux/slab.h:882 [inline]
usb_control_msg+0x83/0x490 drivers/usb/core/message.c:157
get_port_status drivers/usb/core/hub.c:614 [inline]
hub_ext_port_status+0x10d/0x830 drivers/usb/core/hub.c:631
usb_hub_port_status drivers/usb/core/hub.c:681 [inline]
hub_port_debounce+0x1ca/0x260 drivers/usb/core/hub.c:4710
hub_port_debounce_be_stable drivers/usb/core/hub.h:184 [inline]
hub_port_connect drivers/usb/core/hub.c:5426 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5714 [inline]
port_event drivers/usb/core/hub.c:5878 [inline]
hub_event+0x1b66/0x4360 drivers/usb/core/hub.c:5960
process_one_work kernel/workqueue.c:3273 [inline]
process_scheduled_works+0x7f4/0x1060 kernel/workqueue.c:3354
worker_thread+0xc99/0x13f0 kernel/workqueue.c:3435
kthread+0x2c4/0x360 kernel/kthread.c:389
ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
Memory state around the buggy address:
ffff888106273f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888106273f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888106274000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff888106274080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888106274100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000230
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 800000012f413067
P4D 800000012f413067 PUD 0
Oops: Oops: 0002 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 413 Comm: syz.5.20 Tainted: G B syzkaller #0 1f46b48b3a0ef7537d643c2c4b1d5e30032b8167
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:arch_atomic_inc include/linux/instrumented.h:96 [inline]
RIP: 0010:raw_atomic_inc include/linux/atomic/atomic-arch-fallback.h:992 [inline]
RIP: 0010:atomic_inc include/linux/atomic/atomic-instrumented.h:436 [inline]
RIP: 0010:__pm_runtime_resume+0x49/0xa0 drivers/base/power/runtime.c:1177
Code: ff e8 fb d4 3f fe 89 d8 83 e0 04 75 07 e8 af d0 3f fe eb 1e e8 a8 d0 3f fe 49 8d be e0 01 00 00 be 04 00 00 00 e8 07 ae 98 fe 41 ff 86 e0 01 00 00 4d 8d be 14 01 00 00 4c 89 ff e8 c0 67 5f
RSP: 0018:ffffc900010af6a8 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000004 RCX: ffffffff8347a6c9
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000230
RBP: ffffc900010af6c8 R08: 0000000000000234 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1177129 R12: 0000000000000000
R13: ffffffff8680d1a0 R14: 0000000000000050 R15: dffffc0000000000
FS: 00007fe2d67446c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000230 CR3: 000000011f73c000 CR4: 00000000003526b0
Call Trace:
pm_runtime_resume_and_get include/linux/pm_runtime.h:436 [inline]
usb_autopm_get_interface+0x25/0xf0 drivers/usb/core/driver.c:1888
usbhid_power+0x84/0xd0 drivers/hid/usbhid/hid-core.c:1284
hid_hw_power include/linux/hid.h:1174 [inline]
hidraw_open+0x254/0x960 drivers/hid/hidraw.c:302
chrdev_open+0x4eb/0x610 fs/char_dev.c:414
do_dentry_open+0x97c/0x1510 fs/open.c:954
vfs_open+0x86/0x240 fs/open.c:1086
do_open fs/namei.c:3782 [inline]
path_openat+0x2c49/0x35a0 fs/namei.c:3941
do_filp_open+0x1f2/0x440 fs/namei.c:3968
do_sys_openat2+0x134/0x1d0 fs/open.c:1434
do_sys_open fs/open.c:1449 [inline]
__do_sys_openat fs/open.c:1465 [inline]
__se_sys_openat fs/open.c:1460 [inline]
__x64_sys_openat+0x13a/0x170 fs/open.c:1460
x64_sys_call+0xe69/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:258
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fe2d575e98e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fe2d6743b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fe2d67446c0 RCX: 00007fe2d575e98e
RDX: 000000000000bb02 RSI: 00007fe2d6743c00 RDI: ffffffffffffff9c
RBP: 00007fe2d6743c00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007fe2d5a26038 R14: 00007fe2d5a25fa0 R15: 00007ffd66acbe58
Modules linked in:
CR2: 0000000000000230
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_atomic_inc include/linux/instrumented.h:96 [inline]
RIP: 0010:raw_atomic_inc include/linux/atomic/atomic-arch-fallback.h:992 [inline]
RIP: 0010:atomic_inc include/linux/atomic/atomic-instrumented.h:436 [inline]
RIP: 0010:__pm_runtime_resume+0x49/0xa0 drivers/base/power/runtime.c:1177
Code: ff e8 fb d4 3f fe 89 d8 83 e0 04 75 07 e8 af d0 3f fe eb 1e e8 a8 d0 3f fe 49 8d be e0 01 00 00 be 04 00 00 00 e8 07 ae 98 fe 41 ff 86 e0 01 00 00 4d 8d be 14 01 00 00 4c 89 ff e8 c0 67 5f
RSP: 0018:ffffc900010af6a8 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000004 RCX: ffffffff8347a6c9
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000230
RBP: ffffc900010af6c8 R08: 0000000000000234 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1177129 R12: 0000000000000000
R13: ffffffff8680d1a0 R14: 0000000000000050 R15: dffffc0000000000
FS: 00007fe2d67446c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000230 CR3: 000000011f73c000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
0: ff ljmp (bad)
1: e8 fb d4 3f fe call 0xfe3fd501
6: 89 d8 mov %ebx,%eax
8: 83 e0 04 and $0x4,%eax
b: 75 07 jne 0x14
d: e8 af d0 3f fe call 0xfe3fd0c1
12: eb 1e jmp 0x32
14: e8 a8 d0 3f fe call 0xfe3fd0c1
19: 49 8d be e0 01 00 00 lea 0x1e0(%r14),%rdi
20: be 04 00 00 00 mov $0x4,%esi
25: e8 07 ae 98 fe call 0xfe98ae31
* 2a: f0 41 ff 86 e0 01 00 lock incl 0x1e0(%r14) <-- trapping instruction
31: 00
32: 4d 8d be 14 01 00 00 lea 0x114(%r14),%r15
39: 4c 89 ff mov %r15,%rdi
3c: e8 .byte 0xe8
3d: c0 .byte 0xc0
3e: 67 5f addr32 pop %rdi