==================================================================
BUG: KASAN: slab-use-after-free in usbhid_power+0x7c/0xd0 drivers/hid/usbhid/hid-core.c:1284
Read of size 8 at addr ffff88811e94c008 by task syz.3.560/2016
CPU: 1 UID: 0 PID: 2016 Comm: syz.3.560 Not tainted syzkaller #0 9a2c17613351c9eac8e18d74829f474689ac6bc1
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+0x257/0x960 drivers/hid/hidraw.c:302
chrdev_open+0x4e8/0x610 fs/char_dev.c:414
do_dentry_open+0x97f/0x1510 fs/open.c:960
vfs_open+0x86/0x240 fs/open.c:1092
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:1440
do_sys_open fs/open.c:1455 [inline]
__do_sys_openat fs/open.c:1471 [inline]
__se_sys_openat fs/open.c:1466 [inline]
__x64_sys_openat+0x13a/0x170 fs/open.c:1466
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: 0033:0x7f36cb95e90e
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:00007f36cc904b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f36cc9056c0 RCX: 00007f36cb95e90e
RDX: 000000000014e000 RSI: 00007f36cc904c00 RDI: ffffffffffffff9c
RBP: 00007f36cc904c00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007f36cbc26038 R14: 00007f36cbc25fa0 R15: 00007ffd65abaee8
Allocated by task 286:
kasan_save_stack mm/kasan/common.c:49 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:70
kasan_save_alloc_info+0x3a/0x50 mm/kasan/generic.c:565
unpoison_slab_object mm/kasan/common.c:321 [inline]
__kasan_slab_alloc+0x73/0x90 mm/kasan/common.c:347
kasan_slab_alloc include/linux/kasan.h:251 [inline]
slab_post_alloc_hook mm/slub.c:4202 [inline]
slab_alloc_node mm/slub.c:4251 [inline]
kmem_cache_alloc_node_noprof+0x1ca/0x420 mm/slub.c:4305
kmalloc_reserve+0xcf/0x4f0 net/core/skbuff.c:596
__alloc_skb+0x13f/0x360 net/core/skbuff.c:687
alloc_skb_fclone include/linux/skbuff.h:1413 [inline]
tcp_stream_alloc_skb+0x43/0x370 net/ipv4/tcp.c:890
tcp_sendmsg_locked+0xcbc/0x4ac0 net/ipv4/tcp.c:1174
tcp_sendmsg+0x3e/0xd0 net/ipv4/tcp.c:1365
inet_sendmsg+0xb7/0x120 net/ipv4/af_inet.c:858
sock_sendmsg_nosec net/socket.c:731 [inline]
__sock_sendmsg net/socket.c:745 [inline]
sock_write_iter+0x3bf/0x490 net/socket.c:1166
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0x75f/0xfd0 fs/read_write.c:684
ksys_write+0x145/0x260 fs/read_write.c:737
__do_sys_write fs/read_write.c:749 [inline]
__se_sys_write fs/read_write.c:746 [inline]
__x64_sys_write+0x7f/0x90 fs/read_write.c:746
x64_sys_call+0x271c/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:2
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
Freed by task 299:
kasan_save_stack mm/kasan/common.c:49 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:70
kasan_save_free_info+0x44/0x50 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:249 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:266
kasan_slab_free include/linux/kasan.h:234 [inline]
slab_free_hook mm/slub.c:2445 [inline]
slab_free mm/slub.c:4714 [inline]
kfree+0x158/0x440 mm/slub.c:4875
skb_kfree_head net/core/skbuff.c:1081 [inline]
skb_free_head+0xf7/0x300 net/core/skbuff.c:1098
skb_release_data+0x6d0/0x860 net/core/skbuff.c:1125
skb_release_all net/core/skbuff.c:1190 [inline]
__kfree_skb+0x62/0x210 net/core/skbuff.c:1204
tcp_wmem_free_skb include/net/tcp.h:307 [inline]
tcp_rtx_queue_unlink_and_free+0x40c/0x660 include/net/tcp.h:2108
tcp_clean_rtx_queue net/ipv4/tcp_input.c:3462 [inline]
tcp_ack+0x1fc0/0x61d0 net/ipv4/tcp_input.c:4059
tcp_rcv_established+0xea0/0x1d30 net/ipv4/tcp_input.c:6209
tcp_v4_do_rcv+0x49a/0xbb0 net/ipv4/tcp_ipv4.c:1920
tcp_v4_rcv+0x285b/0x3390 net/ipv4/tcp_ipv4.c:2355
ip_protocol_deliver_rcu+0x1c6/0x390 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x272/0x470 net/ipv4/ip_input.c:233
NF_HOOK include/linux/netfilter.h:317 [inline]
ip_local_deliver+0x1e0/0x360 net/ipv4/ip_input.c:254
dst_input include/net/dst.h:470 [inline]
ip_sublist_rcv_finish net/ipv4/ip_input.c:580 [inline]
ip_list_rcv_finish net/ipv4/ip_input.c:633 [inline]
ip_sublist_rcv+0x83a/0x9b0 net/ipv4/ip_input.c:641
ip_list_rcv+0x3e8/0x450 net/ipv4/ip_input.c:675
__netif_receive_skb_list_ptype net/core/dev.c:5845 [inline]
__netif_receive_skb_list_core+0x830/0x880 net/core/dev.c:5891
__netif_receive_skb_list net/core/dev.c:5943 [inline]
netif_receive_skb_list_internal+0x847/0xb00 net/core/dev.c:6034
gro_normal_list include/net/gro.h:518 [inline]
napi_complete_done+0x323/0x790 net/core/dev.c:6389
virtqueue_napi_complete drivers/net/virtio_net.c:724 [inline]
virtnet_poll+0x27df/0x3190 drivers/net/virtio_net.c:2918
__napi_poll+0xcd/0x600 net/core/dev.c:6901
napi_poll net/core/dev.c:6970 [inline]
net_rx_action+0x5dc/0xd70 net/core/dev.c:7092
handle_softirqs+0x1aa/0x620 kernel/softirq.c:621
__do_softirq kernel/softirq.c:659 [inline]
invoke_softirq kernel/softirq.c:476 [inline]
__irq_exit_rcu+0x47/0xb0 kernel/softirq.c:708
irq_exit_rcu+0xd/0x30 kernel/softirq.c:720
common_interrupt+0x97/0xb0 arch/x86/kernel/irq.c:313
asm_common_interrupt+0x2b/0x40 arch/x86/include/asm/idtentry.h:693
The buggy address belongs to the object at ffff88811e94c000
which belongs to the cache skbuff_small_head of size 768
The buggy address is located 8 bytes inside of
freed 768-byte region [ffff88811e94c000, ffff88811e94c300)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e94c
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x4000000000000040(head|zone=1)
page_type: f5(slab)
raw: 4000000000000040 ffff888106649140 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000120012 00000001f5000000 0000000000000000
head: 4000000000000040 ffff888106649140 dead000000000122 0000000000000000
head: 0000000000000000 0000000000120012 00000001f5000000 0000000000000000
head: 4000000000000002 ffffea00047a5301 ffffffffffffffff 0000000000000000
head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 0, tgid 0 (swapper/1), ts 102248619724, free_ts 102183908830
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_slab_page+0x6b/0x1e0 mm/slub.c:-1
allocate_slab+0x69/0x430 mm/slub.c:2687
new_slab mm/slub.c:2741 [inline]
___slab_alloc+0x591/0x8c0 mm/slub.c:3934
__slab_alloc mm/slub.c:4025 [inline]
__slab_alloc_node mm/slub.c:4078 [inline]
slab_alloc_node mm/slub.c:4239 [inline]
kmem_cache_alloc_node_noprof+0x29b/0x420 mm/slub.c:4305
kmalloc_reserve+0xcf/0x4f0 net/core/skbuff.c:596
__alloc_skb+0x13f/0x360 net/core/skbuff.c:687
alloc_skb include/linux/skbuff.h:1363 [inline]
wg_packet_send_keepalive+0x66/0x1d0 drivers/net/wireguard/send.c:226
wg_expired_send_persistent_keepalive+0x57/0x80 drivers/net/wireguard/timers.c:141
call_timer_fn+0x4c/0x300 kernel/time/timer.c:1798
expire_timers kernel/time/timer.c:1849 [inline]
__run_timers kernel/time/timer.c:2423 [inline]
__run_timer_base+0x6c0/0x9b0 kernel/time/timer.c:2435
run_timer_base kernel/time/timer.c:2444 [inline]
run_timer_softirq+0x35/0x70 kernel/time/timer.c:2454
handle_softirqs+0x1aa/0x620 kernel/softirq.c:621
page last free pid 31 tgid 31 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
__folio_put+0x272/0x2c0 mm/swap.c:115
folio_put include/linux/mm.h:1589 [inline]
free_large_kmalloc+0xb7/0x110 mm/slub.c:4842
kfree+0x209/0x440 mm/slub.c:4869
usbhid_disconnect+0xab/0xc0 drivers/hid/usbhid/hid-core.c:1479
usb_unbind_interface+0x2ad/0xa40 drivers/usb/core/driver.c:462
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x525/0x830 drivers/base/dd.c:1295
device_release_driver+0x1d/0x30 drivers/base/dd.c:1318
bus_remove_device+0x34f/0x370 drivers/base/bus.c:576
device_del+0x583/0xcf0 drivers/base/core.c:3881
usb_disable_device+0x3af/0x770 drivers/usb/core/message.c:1476
usb_disconnect+0x331/0x950 drivers/usb/core/hub.c:2353
hub_port_connect drivers/usb/core/hub.c:5414 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5714 [inline]
port_event drivers/usb/core/hub.c:5878 [inline]
hub_event+0x1ad5/0x4360 drivers/usb/core/hub.c:5960
process_one_work kernel/workqueue.c:3273 [inline]
process_scheduled_works+0x7f7/0x1060 kernel/workqueue.c:3354
worker_thread+0xc99/0x13f0 kernel/workqueue.c:3435
kthread+0x2c7/0x360 kernel/kthread.c:389
Memory state around the buggy address:
ffff88811e94bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88811e94bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88811e94c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88811e94c080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88811e94c100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Oops: general protection fault, probably for non-canonical address 0x7d201660000035b: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 2016 Comm: syz.3.560 Tainted: G B syzkaller #0 9a2c17613351c9eac8e18d74829f474689ac6bc1
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 1b fb 3f fe 89 d8 83 e0 04 75 07 e8 cf f6 3f fe eb 1e e8 c8 f6 3f fe 49 8d be e0 01 00 00 be 04 00 00 00 e8 f7 d5 98 fe 41 ff 86 e0 01 00 00 4d 8d be 14 01 00 00 4c 89 ff e8 10 41 5f
RSP: 0018:ffffc9000f1776a8 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000004 RCX: ffffffff83477b09
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 07d201660000035b
RBP: ffffc9000f1776c8 R08: 07d201660000035f R09: 0000000000000fa4
R10: dffffc0000000000 R11: fffffbfff1176f29 R12: 0000000000000000
R13: ffffffff8680c9e0 R14: 07d201660000017b R15: dffffc0000000000
FS: 00007f36cc9056c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011114c000 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+0x257/0x960 drivers/hid/hidraw.c:302
chrdev_open+0x4e8/0x610 fs/char_dev.c:414
do_dentry_open+0x97f/0x1510 fs/open.c:960
vfs_open+0x86/0x240 fs/open.c:1092
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:1440
do_sys_open fs/open.c:1455 [inline]
__do_sys_openat fs/open.c:1471 [inline]
__se_sys_openat fs/open.c:1466 [inline]
__x64_sys_openat+0x13a/0x170 fs/open.c:1466
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: 0033:0x7f36cb95e90e
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:00007f36cc904b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f36cc9056c0 RCX: 00007f36cb95e90e
RDX: 000000000014e000 RSI: 00007f36cc904c00 RDI: ffffffffffffff9c
RBP: 00007f36cc904c00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007f36cbc26038 R14: 00007f36cbc25fa0 R15: 00007ffd65abaee8
Modules linked in:
---[ 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 1b fb 3f fe 89 d8 83 e0 04 75 07 e8 cf f6 3f fe eb 1e e8 c8 f6 3f fe 49 8d be e0 01 00 00 be 04 00 00 00 e8 f7 d5 98 fe 41 ff 86 e0 01 00 00 4d 8d be 14 01 00 00 4c 89 ff e8 10 41 5f
RSP: 0018:ffffc9000f1776a8 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000004 RCX: ffffffff83477b09
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 07d201660000035b
RBP: ffffc9000f1776c8 R08: 07d201660000035f R09: 0000000000000fa4
R10: dffffc0000000000 R11: fffffbfff1176f29 R12: 0000000000000000
R13: ffffffff8680c9e0 R14: 07d201660000017b R15: dffffc0000000000
FS: 00007f36cc9056c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011114c000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
0: ff ljmp (bad)
1: e8 1b fb 3f fe call 0xfe3ffb21
6: 89 d8 mov %ebx,%eax
8: 83 e0 04 and $0x4,%eax
b: 75 07 jne 0x14
d: e8 cf f6 3f fe call 0xfe3ff6e1
12: eb 1e jmp 0x32
14: e8 c8 f6 3f fe call 0xfe3ff6e1
19: 49 8d be e0 01 00 00 lea 0x1e0(%r14),%rdi
20: be 04 00 00 00 mov $0x4,%esi
25: e8 f7 d5 98 fe call 0xfe98d621
* 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: 10 41 5f adc %al,0x5f(%rcx)