==================================================================
BUG: KASAN: use-after-free in usbhid_power+0x78/0xc0 drivers/hid/usbhid/hid-core.c:1281
Read of size 8 at addr ffff8881122c8008 by task syz.2.18/391
CPU: 0 PID: 391 Comm: syz.2.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:88
dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
print_address_description+0x71/0x200 mm/kasan/report.c:316
print_report+0x4a/0x60 mm/kasan/report.c:420
kasan_report+0x122/0x150 mm/kasan/report.c:524
__asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:351
usbhid_power+0x78/0xc0 drivers/hid/usbhid/hid-core.c:1281
hid_hw_power include/linux/hid.h:1139 [inline]
hidraw_open+0x272/0x920 drivers/hid/hidraw.c:288
chrdev_open+0x593/0x600 fs/char_dev.c:414
do_dentry_open+0x885/0x11f0 fs/open.c:884
vfs_open+0x73/0x80 fs/open.c:1017
do_open fs/namei.c:3633 [inline]
path_openat+0x2699/0x2f30 fs/namei.c:3790
do_filp_open+0x1ee/0x420 fs/namei.c:3817
do_sys_openat2+0x15e/0x820 fs/open.c:1343
do_sys_open fs/open.c:1359 [inline]
__do_sys_openat fs/open.c:1375 [inline]
__se_sys_openat fs/open.c:1370 [inline]
__x64_sys_openat+0x136/0x160 fs/open.c:1370
x64_sys_call+0x783/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fbe11d5e9ce
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:00007fbe12bb8b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fbe12bb96c0 RCX: 00007fbe11d5e9ce
RDX: 0000000000000000 RSI: 00007fbe12bb8c00 RDI: ffffffffffffff9c
RBP: 00007fbe12bb8c00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007fbe12026038 R14: 00007fbe12025fa0 R15: 00007ffeeb880e18
Allocated by task 386:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:380 [inline]
__kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
kasan_kmalloc include/linux/kasan.h:212 [inline]
__do_kmalloc_node mm/slab_common.c:938 [inline]
__kmalloc_node_track_caller+0xb1/0x1e0 mm/slab_common.c:958
kmalloc_reserve net/core/skbuff.c:449 [inline]
__alloc_skb+0x226/0x4a0 net/core/skbuff.c:518
alloc_skb include/linux/skbuff.h:1322 [inline]
alloc_skb_with_frags+0xa8/0x620 net/core/skbuff.c:6176
sock_alloc_send_pskb+0x87f/0x9a0 net/core/sock.c:2770
unix_dgram_sendmsg+0x5c1/0x1710 net/unix/af_unix.c:1949
sock_sendmsg_nosec net/socket.c:716 [inline]
__sock_sendmsg net/socket.c:728 [inline]
sock_write_iter+0x2ea/0x3f0 net/socket.c:1134
call_write_iter include/linux/fs.h:2282 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x5ef/0xd00 fs/read_write.c:584
ksys_write+0x14a/0x260 fs/read_write.c:637
__do_sys_write fs/read_write.c:649 [inline]
__se_sys_write fs/read_write.c:646 [inline]
__x64_sys_write+0x7b/0x90 fs/read_write.c:646
x64_sys_call+0x27b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 103:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1750 [inline]
slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
slab_free mm/slub.c:3712 [inline]
__kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
kfree+0x6f/0xf0 mm/slab_common.c:990
skb_free_head net/core/skbuff.c:765 [inline]
skb_release_data+0x63d/0x8a0 net/core/skbuff.c:794
skb_release_all net/core/skbuff.c:859 [inline]
__kfree_skb net/core/skbuff.c:873 [inline]
consume_skb+0xab/0x1f0 net/core/skbuff.c:1038
skb_free_datagram+0x15/0x20 net/core/datagram.c:322
__unix_dgram_recvmsg+0xa02/0xd90 net/unix/af_unix.c:2535
unix_dgram_recvmsg+0xc7/0xe0 net/unix/af_unix.c:2552
____sys_recvmsg+0x2d6/0x5c0 net/socket.c:-1
___sys_recvmsg+0x210/0x590 net/socket.c:2770
__sys_recvmsg net/socket.c:2800 [inline]
__do_sys_recvmsg net/socket.c:2810 [inline]
__se_sys_recvmsg net/socket.c:2807 [inline]
__x64_sys_recvmsg+0x20a/0x2e0 net/socket.c:2807
x64_sys_call+0x75/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:48
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
The buggy address belongs to the object at ffff8881122c8000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
512-byte region [ffff8881122c8000, ffff8881122c8200)
The buggy address belongs to the physical page:
page:ffffea000448b200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1122c8
head:ffffea000448b200 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00
raw: 0000000000000000 0000000000100010 00000001ffffffff 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 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 60, tgid 60 (kworker/0:2), ts 33284673333, free_ts 33263024140
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2673
prep_new_page+0x1c/0x110 mm/page_alloc.c:2680
get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4587
__alloc_pages+0x1fa/0x610 mm/page_alloc.c:5931
alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
allocate_slab mm/slub.c:1967 [inline]
new_slab+0x98/0x3e0 mm/slub.c:2020
___slab_alloc+0x70f/0xb70 mm/slub.c:3177
__slab_alloc+0x5e/0xa0 mm/slub.c:3263
slab_alloc_node mm/slub.c:3348 [inline]
__kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
__do_kmalloc_node mm/slab_common.c:937 [inline]
__kmalloc+0xa4/0x1e0 mm/slab_common.c:951
kmalloc include/linux/slab.h:568 [inline]
kzalloc include/linux/slab.h:699 [inline]
neigh_alloc net/core/neighbour.c:494 [inline]
___neigh_create+0x6e3/0x1db0 net/core/neighbour.c:648
__neigh_create+0x31/0x40 net/core/neighbour.c:737
ip6_finish_output2+0xaaf/0x18b0 net/ipv6/ip6_output.c:129
__ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
ip6_finish_output+0x60b/0xbe0 net/ipv6/ip6_output.c:216
NF_HOOK_COND include/linux/netfilter.h:294 [inline]
ip6_output+0x1fa/0x410 net/ipv6/ip6_output.c:237
dst_output include/net/dst.h:453 [inline]
NF_HOOK include/linux/netfilter.h:305 [inline]
ndisc_send_skb+0x7c8/0xcd0 net/ipv6/ndisc.c:513
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1581 [inline]
free_pcp_prepare mm/page_alloc.c:1655 [inline]
free_unref_page_prepare+0x81b/0x820 mm/page_alloc.c:3622
free_unref_page+0x93/0x530 mm/page_alloc.c:3720
free_the_page mm/page_alloc.c:863 [inline]
__free_pages+0x67/0x100 mm/page_alloc.c:6021
free_pages+0x82/0x90 mm/page_alloc.c:6032
__stack_depot_save+0x45f/0x490 lib/stackdepot.c:506
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_set_track+0x60/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1750 [inline]
slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
slab_free mm/slub.c:3712 [inline]
__kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
kfree+0x6f/0xf0 mm/slab_common.c:990
dev_uevent+0x255/0x550 drivers/base/core.c:2591
kobject_uevent_env+0x459/0x720 lib/kobject_uevent.c:572
kobject_uevent+0x1d/0x30 lib/kobject_uevent.c:657
device_del+0xcda/0xe50 drivers/base/core.c:3906
Memory state around the buggy address:
ffff8881122c7f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8881122c7f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881122c8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8881122c8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881122c8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
general protection fault, probably for non-canonical address 0x71c01010000028f: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 391 Comm: syz.2.18 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:arch_atomic_inc include/linux/instrumented.h:102 [inline]
RIP: 0010:atomic_inc include/linux/atomic/atomic-instrumented.h:191 [inline]
RIP: 0010:__pm_runtime_resume+0x45/0x90 drivers/base/power/runtime.c:1168
Code: ff e8 9f 3c 89 fe 89 d8 83 e0 04 75 07 e8 73 38 89 fe eb 1e e8 6c 38 89 fe 49 8d be f8 01 00 00 be 04 00 00 00 e8 1b c6 ce fe 41 ff 86 f8 01 00 00 4d 8d be 14 01 00 00 4c 89 ff e8 14 49 19
RSP: 0018:ffffc90000757718 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000004 RCX: ffffffff82e835e5
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 071c01010000028f
RBP: ffffc90000757738 R08: 0000000000000e38 R09: 1ffffffff0f6ecfc
R10: dffffc0000000000 R11: fffffbfff0f6ecfd R12: ffffffff876ee260
R13: 0000000000000000 R14: 071c010100000097 R15: dffffc0000000000
FS: 00007fbe12bb96c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562a81940df0 CR3: 000000012ba63000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pm_runtime_get_sync include/linux/pm_runtime.h:435 [inline]
usb_autopm_get_interface+0x20/0x60 drivers/usb/core/driver.c:1827
usbhid_power+0x80/0xc0 drivers/hid/usbhid/hid-core.c:1281
hid_hw_power include/linux/hid.h:1139 [inline]
hidraw_open+0x272/0x920 drivers/hid/hidraw.c:288
chrdev_open+0x593/0x600 fs/char_dev.c:414
do_dentry_open+0x885/0x11f0 fs/open.c:884
vfs_open+0x73/0x80 fs/open.c:1017
do_open fs/namei.c:3633 [inline]
path_openat+0x2699/0x2f30 fs/namei.c:3790
do_filp_open+0x1ee/0x420 fs/namei.c:3817
do_sys_openat2+0x15e/0x820 fs/open.c:1343
do_sys_open fs/open.c:1359 [inline]
__do_sys_openat fs/open.c:1375 [inline]
__se_sys_openat fs/open.c:1370 [inline]
__x64_sys_openat+0x136/0x160 fs/open.c:1370
x64_sys_call+0x783/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fbe11d5e9ce
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:00007fbe12bb8b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fbe12bb96c0 RCX: 00007fbe11d5e9ce
RDX: 0000000000000000 RSI: 00007fbe12bb8c00 RDI: ffffffffffffff9c
RBP: 00007fbe12bb8c00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007fbe12026038 R14: 00007fbe12025fa0 R15: 00007ffeeb880e18
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_atomic_inc include/linux/instrumented.h:102 [inline]
RIP: 0010:atomic_inc include/linux/atomic/atomic-instrumented.h:191 [inline]
RIP: 0010:__pm_runtime_resume+0x45/0x90 drivers/base/power/runtime.c:1168
Code: ff e8 9f 3c 89 fe 89 d8 83 e0 04 75 07 e8 73 38 89 fe eb 1e e8 6c 38 89 fe 49 8d be f8 01 00 00 be 04 00 00 00 e8 1b c6 ce fe 41 ff 86 f8 01 00 00 4d 8d be 14 01 00 00 4c 89 ff e8 14 49 19
RSP: 0018:ffffc90000757718 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000004 RCX: ffffffff82e835e5
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 071c01010000028f
RBP: ffffc90000757738 R08: 0000000000000e38 R09: 1ffffffff0f6ecfc
R10: dffffc0000000000 R11: fffffbfff0f6ecfd R12: ffffffff876ee260
R13: 0000000000000000 R14: 071c010100000097 R15: dffffc0000000000
FS: 00007fbe12bb96c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f54d4e1be9c CR3: 000000012ba63000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: ff ljmp (bad)
1: e8 9f 3c 89 fe call 0xfe893ca5
6: 89 d8 mov %ebx,%eax
8: 83 e0 04 and $0x4,%eax
b: 75 07 jne 0x14
d: e8 73 38 89 fe call 0xfe893885
12: eb 1e jmp 0x32
14: e8 6c 38 89 fe call 0xfe893885
19: 49 8d be f8 01 00 00 lea 0x1f8(%r14),%rdi
20: be 04 00 00 00 mov $0x4,%esi
25: e8 1b c6 ce fe call 0xfecec645
* 2a: f0 41 ff 86 f8 01 00 lock incl 0x1f8(%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: 14 49 adc $0x49,%al
3f: 19 .byte 0x19