[Android 6.1] KASAN: use-after-free Read in input_dev_uevent (2)
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syzbot
Apr 10, 2026, 10:12:34 AM (9 days ago) Apr 10
to syzkaller-a...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: b1e92db6a41f ANDROID: GKI: Update symbol list for mtk
git tree: android14-6.1
console output: https://syzkaller.appspot.com/x/log.txt?x=14d80316580000
kernel config: https://syzkaller.appspot.com/x/.config?x=869e5ae06f0f48a4
dashboard link: https://syzkaller.appspot.com/bug?extid=5f8233c5d5e4b76dcf51
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=167f2316580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=103447ca580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f9207e492162/disk-b1e92db6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/592426f66b9f/vmlinux-b1e92db6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/8da0a612ee94/bzImage-b1e92db6.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+5f8233...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in string_nocheck lib/vsprintf.c:643 [inline]
BUG: KASAN: use-after-free in string+0x21f/0x2b0 lib/vsprintf.c:725
Read of size 1 at addr ffff888130f7d4c9 by task udevd/102
CPU: 1 PID: 102 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
<TASK>
__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_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:348
string_nocheck lib/vsprintf.c:643 [inline]
string+0x21f/0x2b0 lib/vsprintf.c:725
vsnprintf+0xec4/0x1990 lib/vsprintf.c:2805
add_uevent_var+0x1d4/0x450 lib/kobject_uevent.c:680
input_dev_uevent+0x1ce/0xa20 drivers/input/input.c:1765
dev_uevent+0x49a/0x530 drivers/base/core.c:2623
uevent_show+0x1cb/0x350 drivers/base/core.c:2672
dev_attr_show+0x64/0xe0 drivers/base/core.c:2373
sysfs_kf_seq_show+0x280/0x3a0 fs/sysfs/file.c:59
kernfs_seq_show+0x12a/0x180 fs/kernfs/file.c:223
seq_read_iter+0x4c4/0xdd0 fs/seq_file.c:230
kernfs_fop_read_iter+0x14a/0x4e0 fs/kernfs/file.c:297
call_read_iter include/linux/fs.h:2276 [inline]
new_sync_read fs/read_write.c:389 [inline]
vfs_read+0x454/0x910 fs/read_write.c:470
ksys_read+0x149/0x250 fs/read_write.c:613
__do_sys_read fs/read_write.c:623 [inline]
__se_sys_read fs/read_write.c:621 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:621
x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
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: 0033:0x7f5343aa7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffd9f2c8070 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f534418c880 RCX: 00007f5343aa7407
RDX: 0000000000001000 RSI: 000055fabf7e2630 RDI: 000000000000000c
RBP: 00007f5343befff0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000a
R13: 00007f5343befea0 R14: 0000000000000000 R15: 000055fabf768230
</TASK>
Allocated by task 384:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_alloc_info+0x25/0x30 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
alloc_dr drivers/base/devres.c:116 [inline]
devm_kmalloc+0x55/0x160 drivers/base/devres.c:833
devm_kzalloc include/linux/device.h:211 [inline]
steam_probe+0x11b/0xb60 drivers/hid/hid-steam.c:741
hid_device_probe+0x268/0x390 drivers/hid/hid-core.c:2640
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2cb/0x960 drivers/base/dd.c:639
__driver_probe_device+0x198/0x280 drivers/base/dd.c:808
driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838
__device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966
bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429
__device_attach+0x2b0/0x420 drivers/base/dd.c:1038
device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489
device_add+0xb4d/0xef0 drivers/base/core.c:3698
hid_add_device+0x38f/0x540 drivers/hid/hid-core.c:2792
usbhid_probe+0xbb6/0xfa0 drivers/hid/usbhid/hid-core.c:1442
usb_probe_interface+0x63f/0xb20 drivers/usb/core/driver.c:397
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2cb/0x960 drivers/base/dd.c:639
__driver_probe_device+0x198/0x280 drivers/base/dd.c:808
driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838
__device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966
bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429
__device_attach+0x2b0/0x420 drivers/base/dd.c:1038
device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489
device_add+0xb4d/0xef0 drivers/base/core.c:3698
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+0x159/0x270 drivers/usb/core/driver.c:294
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2cb/0x960 drivers/base/dd.c:639
__driver_probe_device+0x198/0x280 drivers/base/dd.c:808
driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838
__device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966
bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429
__device_attach+0x2b0/0x420 drivers/base/dd.c:1038
device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489
device_add+0xb4d/0xef0 drivers/base/core.c:3698
usb_new_device+0xa81/0x1550 drivers/usb/core/hub.c:2684
hub_port_connect drivers/usb/core/hub.c:5594 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5734 [inline]
port_event drivers/usb/core/hub.c:5898 [inline]
hub_event+0x2aca/0x46b0 drivers/usb/core/hub.c:5980
process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
worker_thread+0xa29/0x11e0 kernel/workqueue.c:2449
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Freed by task 384:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x31/0x50 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
release_nodes+0xf9/0x230 drivers/base/devres.c:503
devres_release_all+0x150/0x1b0 drivers/base/devres.c:532
device_unbind_cleanup drivers/base/dd.c:530 [inline]
__device_release_driver drivers/base/dd.c:1288 [inline]
device_release_driver_internal+0x581/0x820 drivers/base/dd.c:1309
device_release_driver+0x19/0x20 drivers/base/dd.c:1332
bus_remove_device+0x2ee/0x350 drivers/base/bus.c:531
device_del+0x6bc/0xec0 drivers/base/core.c:3886
hid_remove_device drivers/hid/hid-core.c:2840 [inline]
hid_destroy_device+0x6a/0x110 drivers/hid/hid-core.c:2859
usbhid_disconnect+0x9f/0xc0 drivers/hid/usbhid/hid-core.c:1469
usb_unbind_interface+0x223/0x8d0 drivers/usb/core/driver.c:459
device_remove drivers/base/dd.c:550 [inline]
__device_release_driver drivers/base/dd.c:1283 [inline]
device_release_driver_internal+0x508/0x820 drivers/base/dd.c:1309
device_release_driver+0x19/0x20 drivers/base/dd.c:1332
bus_remove_device+0x2ee/0x350 drivers/base/bus.c:531
device_del+0x6bc/0xec0 drivers/base/core.c:3886
usb_disable_device+0x3a8/0x750 drivers/usb/core/message.c:1414
usb_disconnect+0x31e/0x860 drivers/usb/core/hub.c:2339
hub_port_connect drivers/usb/core/hub.c:5433 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5734 [inline]
port_event drivers/usb/core/hub.c:5898 [inline]
hub_event+0x1c1b/0x46b0 drivers/usb/core/hub.c:5980
process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
process_scheduled_works kernel/workqueue.c:2365 [inline]
worker_thread+0xcce/0x11e0 kernel/workqueue.c:2451
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
The buggy address belongs to the object at ffff888130f7d400
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 201 bytes inside of
512-byte region [ffff888130f7d400, ffff888130f7d600)
The buggy address belongs to the physical page:
page:ffffea0004c3df00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x130f7c
head:ffffea0004c3df00 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 24, tgid 24 (kworker/1:0), ts 36939721795, free_ts 33403258306
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2670
prep_new_page+0x1c/0x110 mm/page_alloc.c:2677
get_page_from_freelist+0x2d12/0x2d80 mm/page_alloc.c:4583
__alloc_pages+0x1fa/0x610 mm/page_alloc.c:5924
alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
allocate_slab mm/slub.c:1967 [inline]
new_slab+0x98/0x3d0 mm/slub.c:2020
___slab_alloc+0x6bd/0xb20 mm/slub.c:3177
__slab_alloc+0x5e/0xa0 mm/slub.c:3263
slab_alloc_node mm/slub.c:3348 [inline]
__kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3423
__do_kmalloc_node mm/slab_common.c:937 [inline]
__kmalloc+0xa1/0x1e0 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+0x6f6/0x1e20 net/core/neighbour.c:648
__neigh_create+0x31/0x40 net/core/neighbour.c:737
ip6_finish_output2+0xa56/0x18a0 net/ipv6/ip6_output.c:129
__ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
ip6_finish_output+0x5f9/0xbb0 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+0x7dc/0xcc0 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:1578 [inline]
free_pcp_prepare mm/page_alloc.c:1652 [inline]
free_unref_page_prepare+0x742/0x750 mm/page_alloc.c:3618
free_unref_page+0x95/0x540 mm/page_alloc.c:3716
free_the_page mm/page_alloc.c:863 [inline]
__free_pages+0x67/0x100 mm/page_alloc.c:6014
__vunmap+0x9c0/0xb80 mm/vmalloc.c:2739
__vfree mm/vmalloc.c:2788 [inline]
vfree+0x61/0x90 mm/vmalloc.c:2819
kcov_put kernel/kcov.c:437 [inline]
kcov_close+0x2b/0x50 kernel/kcov.c:533
__fput+0x1fc/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0xa35/0x2660 kernel/exit.c:886
do_group_exit+0x210/0x2d0 kernel/exit.c:1028
get_signal+0x13b5/0x1520 kernel/signal.c:2891
arch_do_signal_or_restart+0xd1/0x1140 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
Memory state around the buggy address:
ffff888130f7d380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888130f7d400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888130f7d480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888130f7d500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888130f7d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
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If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
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If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: b1e92db6a41f ANDROID: GKI: Update symbol list for mtk
git tree: android14-6.1
console output: https://syzkaller.appspot.com/x/log.txt?x=14d80316580000
kernel config: https://syzkaller.appspot.com/x/.config?x=869e5ae06f0f48a4
dashboard link: https://syzkaller.appspot.com/bug?extid=5f8233c5d5e4b76dcf51
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=167f2316580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=103447ca580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f9207e492162/disk-b1e92db6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/592426f66b9f/vmlinux-b1e92db6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/8da0a612ee94/bzImage-b1e92db6.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+5f8233...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in string_nocheck lib/vsprintf.c:643 [inline]
BUG: KASAN: use-after-free in string+0x21f/0x2b0 lib/vsprintf.c:725
Read of size 1 at addr ffff888130f7d4c9 by task udevd/102
CPU: 1 PID: 102 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
<TASK>
__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_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:348
string_nocheck lib/vsprintf.c:643 [inline]
string+0x21f/0x2b0 lib/vsprintf.c:725
vsnprintf+0xec4/0x1990 lib/vsprintf.c:2805
add_uevent_var+0x1d4/0x450 lib/kobject_uevent.c:680
input_dev_uevent+0x1ce/0xa20 drivers/input/input.c:1765
dev_uevent+0x49a/0x530 drivers/base/core.c:2623
uevent_show+0x1cb/0x350 drivers/base/core.c:2672
dev_attr_show+0x64/0xe0 drivers/base/core.c:2373
sysfs_kf_seq_show+0x280/0x3a0 fs/sysfs/file.c:59
kernfs_seq_show+0x12a/0x180 fs/kernfs/file.c:223
seq_read_iter+0x4c4/0xdd0 fs/seq_file.c:230
kernfs_fop_read_iter+0x14a/0x4e0 fs/kernfs/file.c:297
call_read_iter include/linux/fs.h:2276 [inline]
new_sync_read fs/read_write.c:389 [inline]
vfs_read+0x454/0x910 fs/read_write.c:470
ksys_read+0x149/0x250 fs/read_write.c:613
__do_sys_read fs/read_write.c:623 [inline]
__se_sys_read fs/read_write.c:621 [inline]
__x64_sys_read+0x7b/0x90 fs/read_write.c:621
x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
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: 0033:0x7f5343aa7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffd9f2c8070 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f534418c880 RCX: 00007f5343aa7407
RDX: 0000000000001000 RSI: 000055fabf7e2630 RDI: 000000000000000c
RBP: 00007f5343befff0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000a
R13: 00007f5343befea0 R14: 0000000000000000 R15: 000055fabf768230
</TASK>
Allocated by task 384:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_alloc_info+0x25/0x30 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
alloc_dr drivers/base/devres.c:116 [inline]
devm_kmalloc+0x55/0x160 drivers/base/devres.c:833
devm_kzalloc include/linux/device.h:211 [inline]
steam_probe+0x11b/0xb60 drivers/hid/hid-steam.c:741
hid_device_probe+0x268/0x390 drivers/hid/hid-core.c:2640
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2cb/0x960 drivers/base/dd.c:639
__driver_probe_device+0x198/0x280 drivers/base/dd.c:808
driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838
__device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966
bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429
__device_attach+0x2b0/0x420 drivers/base/dd.c:1038
device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489
device_add+0xb4d/0xef0 drivers/base/core.c:3698
hid_add_device+0x38f/0x540 drivers/hid/hid-core.c:2792
usbhid_probe+0xbb6/0xfa0 drivers/hid/usbhid/hid-core.c:1442
usb_probe_interface+0x63f/0xb20 drivers/usb/core/driver.c:397
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2cb/0x960 drivers/base/dd.c:639
__driver_probe_device+0x198/0x280 drivers/base/dd.c:808
driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838
__device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966
bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429
__device_attach+0x2b0/0x420 drivers/base/dd.c:1038
device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489
device_add+0xb4d/0xef0 drivers/base/core.c:3698
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+0x159/0x270 drivers/usb/core/driver.c:294
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2cb/0x960 drivers/base/dd.c:639
__driver_probe_device+0x198/0x280 drivers/base/dd.c:808
driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838
__device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966
bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429
__device_attach+0x2b0/0x420 drivers/base/dd.c:1038
device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489
device_add+0xb4d/0xef0 drivers/base/core.c:3698
usb_new_device+0xa81/0x1550 drivers/usb/core/hub.c:2684
hub_port_connect drivers/usb/core/hub.c:5594 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5734 [inline]
port_event drivers/usb/core/hub.c:5898 [inline]
hub_event+0x2aca/0x46b0 drivers/usb/core/hub.c:5980
process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
worker_thread+0xa29/0x11e0 kernel/workqueue.c:2449
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Freed by task 384:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x31/0x50 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
release_nodes+0xf9/0x230 drivers/base/devres.c:503
devres_release_all+0x150/0x1b0 drivers/base/devres.c:532
device_unbind_cleanup drivers/base/dd.c:530 [inline]
__device_release_driver drivers/base/dd.c:1288 [inline]
device_release_driver_internal+0x581/0x820 drivers/base/dd.c:1309
device_release_driver+0x19/0x20 drivers/base/dd.c:1332
bus_remove_device+0x2ee/0x350 drivers/base/bus.c:531
device_del+0x6bc/0xec0 drivers/base/core.c:3886
hid_remove_device drivers/hid/hid-core.c:2840 [inline]
hid_destroy_device+0x6a/0x110 drivers/hid/hid-core.c:2859
usbhid_disconnect+0x9f/0xc0 drivers/hid/usbhid/hid-core.c:1469
usb_unbind_interface+0x223/0x8d0 drivers/usb/core/driver.c:459
device_remove drivers/base/dd.c:550 [inline]
__device_release_driver drivers/base/dd.c:1283 [inline]
device_release_driver_internal+0x508/0x820 drivers/base/dd.c:1309
device_release_driver+0x19/0x20 drivers/base/dd.c:1332
bus_remove_device+0x2ee/0x350 drivers/base/bus.c:531
device_del+0x6bc/0xec0 drivers/base/core.c:3886
usb_disable_device+0x3a8/0x750 drivers/usb/core/message.c:1414
usb_disconnect+0x31e/0x860 drivers/usb/core/hub.c:2339
hub_port_connect drivers/usb/core/hub.c:5433 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5734 [inline]
port_event drivers/usb/core/hub.c:5898 [inline]
hub_event+0x1c1b/0x46b0 drivers/usb/core/hub.c:5980
process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
process_scheduled_works kernel/workqueue.c:2365 [inline]
worker_thread+0xcce/0x11e0 kernel/workqueue.c:2451
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
The buggy address belongs to the object at ffff888130f7d400
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 201 bytes inside of
512-byte region [ffff888130f7d400, ffff888130f7d600)
The buggy address belongs to the physical page:
page:ffffea0004c3df00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x130f7c
head:ffffea0004c3df00 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 24, tgid 24 (kworker/1:0), ts 36939721795, free_ts 33403258306
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2670
prep_new_page+0x1c/0x110 mm/page_alloc.c:2677
get_page_from_freelist+0x2d12/0x2d80 mm/page_alloc.c:4583
__alloc_pages+0x1fa/0x610 mm/page_alloc.c:5924
alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
allocate_slab mm/slub.c:1967 [inline]
new_slab+0x98/0x3d0 mm/slub.c:2020
___slab_alloc+0x6bd/0xb20 mm/slub.c:3177
__slab_alloc+0x5e/0xa0 mm/slub.c:3263
slab_alloc_node mm/slub.c:3348 [inline]
__kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3423
__do_kmalloc_node mm/slab_common.c:937 [inline]
__kmalloc+0xa1/0x1e0 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+0x6f6/0x1e20 net/core/neighbour.c:648
__neigh_create+0x31/0x40 net/core/neighbour.c:737
ip6_finish_output2+0xa56/0x18a0 net/ipv6/ip6_output.c:129
__ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
ip6_finish_output+0x5f9/0xbb0 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+0x7dc/0xcc0 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:1578 [inline]
free_pcp_prepare mm/page_alloc.c:1652 [inline]
free_unref_page_prepare+0x742/0x750 mm/page_alloc.c:3618
free_unref_page+0x95/0x540 mm/page_alloc.c:3716
free_the_page mm/page_alloc.c:863 [inline]
__free_pages+0x67/0x100 mm/page_alloc.c:6014
__vunmap+0x9c0/0xb80 mm/vmalloc.c:2739
__vfree mm/vmalloc.c:2788 [inline]
vfree+0x61/0x90 mm/vmalloc.c:2819
kcov_put kernel/kcov.c:437 [inline]
kcov_close+0x2b/0x50 kernel/kcov.c:533
__fput+0x1fc/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0xa35/0x2660 kernel/exit.c:886
do_group_exit+0x210/0x2d0 kernel/exit.c:1028
get_signal+0x13b5/0x1520 kernel/signal.c:2891
arch_do_signal_or_restart+0xd1/0x1140 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
Memory state around the buggy address:
ffff888130f7d380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888130f7d400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888130f7d480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888130f7d500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888130f7d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
This report is generated by a bot. It may contain errors.
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