[syzbot] [usb?] KASAN: slab-use-after-free Read in usbhid_raw_request

[syzbot] [usb?] KASAN: slab-use-after-free Read in usbhid_raw_request

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    72deda0abee6 Merge tag 'soundwire-6.14-rc1' of git://git.k..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
console output: https://syzkaller.appspot.com/x/log.txt?x=1300fddf980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8c011d19ff7f1a12
dashboard link: https://syzkaller.appspot.com/bug?extid=90ac8355c8ac84b1b464
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13b555f8580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1666cb24580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/82546410e501/disk-72deda0a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/24a56810b3df/vmlinux-72deda0a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9bb4e9366966/bzImage-72deda0a.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+90ac8355c8ac84b1b464@syzkaller.appspotmail.com

==================================================================
BUG: KASAN: slab-use-after-free in usb_control_msg+0x434/0x4b0 drivers/usb/core/message.c:157
Read of size 4 at addr ffff88812223c67c by task kworker/0:3/2954

CPU: 0 UID: 0 PID: 2954 Comm: kworker/0:3 Not tainted 6.13.0-syzkaller-09485-g72deda0abee6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events corsair_void_status_work_handler
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 usb_control_msg+0x434/0x4b0 drivers/usb/core/message.c:157
 usbhid_set_raw_report drivers/hid/usbhid/hid-core.c:927 [inline]
 usbhid_raw_request+0x233/0x700 drivers/hid/usbhid/hid-core.c:1295
 __hid_hw_raw_request drivers/hid/hid-core.c:2457 [inline]
 hid_hw_raw_request+0x10a/0x150 drivers/hid/hid-core.c:2479
 corsair_void_request_status+0xc3/0x130 drivers/hid/hid-corsair-void.c:493
 corsair_void_status_work_handler+0x3f/0xb0 drivers/hid/hid-corsair-void.c:512
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Allocated by task 2954:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:394
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 usb_alloc_dev+0x55/0xdc0 drivers/usb/core/usb.c:650
 hub_port_connect drivers/usb/core/hub.c:5426 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5663 [inline]
 port_event drivers/usb/core/hub.c:5823 [inline]
 hub_event+0x28f9/0x4f40 drivers/usb/core/hub.c:5905
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Freed by task 2968:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x37/0x50 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4609 [inline]
 kfree+0x294/0x480 mm/slub.c:4757
 device_release+0xa1/0x240 drivers/base/core.c:2567
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1e4/0x5a0 lib/kobject.c:737
 put_device+0x1f/0x30 drivers/base/core.c:3773
 hub_port_connect drivers/usb/core/hub.c:5363 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5663 [inline]
 port_event drivers/usb/core/hub.c:5823 [inline]
 hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5905
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

The buggy address belongs to the object at ffff88812223c000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1660 bytes inside of
 freed 2048-byte region [ffff88812223c000, ffff88812223c800)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x122238
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x200000000000040(head|node=0|zone=2)
page_type: f5(slab)
raw: 0200000000000040 ffff888100042000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 0200000000000040 ffff888100042000 dead000000000122 0000000000000000
head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 0200000000000003 ffffea0004888e01 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 2832, tgid 2832 (klogd), ts 48966197880, free_ts 32895863855
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1551
 prep_new_page mm/page_alloc.c:1559 [inline]
 get_page_from_freelist+0xe76/0x2b90 mm/page_alloc.c:3477
 __alloc_frozen_pages_noprof+0x21c/0x2290 mm/page_alloc.c:4739
 alloc_pages_mpol+0xe7/0x410 mm/mempolicy.c:2270
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab mm/slub.c:2587 [inline]
 new_slab+0x23d/0x330 mm/slub.c:2640
 ___slab_alloc+0xc41/0x1670 mm/slub.c:3826
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3916
 __slab_alloc_node mm/slub.c:3991 [inline]
 slab_alloc_node mm/slub.c:4152 [inline]
 __kmalloc_cache_noprof+0x217/0x3e0 mm/slub.c:4320
 kmalloc_noprof include/linux/slab.h:901 [inline]
 syslog_print+0xf9/0x5d0 kernel/printk/printk.c:1607
 do_syslog+0x3e1/0x6c0 kernel/printk/printk.c:1785
 __do_sys_syslog kernel/printk/printk.c:1877 [inline]
 __se_sys_syslog kernel/printk/printk.c:1875 [inline]
 __x64_sys_syslog+0x74/0xb0 kernel/printk/printk.c:1875
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 2926 tgid 2926 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_frozen_pages+0x653/0xde0 mm/page_alloc.c:2660
 __folio_put+0x1e8/0x2d0 mm/swap.c:112
 folio_put include/linux/mm.h:1489 [inline]
 put_page include/linux/mm.h:1561 [inline]
 skb_page_unref include/linux/skbuff_ref.h:43 [inline]
 __skb_frag_unref include/linux/skbuff_ref.h:56 [inline]
 skb_release_data+0x5d6/0x910 net/core/skbuff.c:1119
 skb_release_all net/core/skbuff.c:1190 [inline]
 __napi_kfree_skb net/core/skbuff.c:1480 [inline]
 kfree_skb_napi_cache net/core/skbuff.c:7115 [inline]
 skb_attempt_defer_free+0x1b9/0x630 net/core/skbuff.c:7137
 tcp_eat_recv_skb net/ipv4/tcp.c:1527 [inline]
 tcp_recvmsg_locked+0x11da/0x2730 net/ipv4/tcp.c:2806
 tcp_recvmsg+0x12e/0x680 net/ipv4/tcp.c:2852
 inet_recvmsg+0x12b/0x6a0 net/ipv4/af_inet.c:883
 sock_recvmsg_nosec net/socket.c:1018 [inline]
 sock_recvmsg+0x1b2/0x250 net/socket.c:1040
 sock_read_iter+0x2bb/0x3b0 net/socket.c:1110
 new_sync_read fs/read_write.c:484 [inline]
 vfs_read+0xa53/0xbf0 fs/read_write.c:565
 ksys_read+0x207/0x250 fs/read_write.c:708
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88812223c500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812223c580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88812223c600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                                ^
 ffff88812223c680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812223c700: 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 syzkaller@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

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:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup

Re: [syzbot] [usb?] KASAN: slab-use-after-free Read in usbhid_raw_request

[Edward Adam Davis]

#syz test

diff --git a/drivers/hid/hid-corsair-void.c b/drivers/hid/hid-corsair-void.c
index 6ece56b850fc..83d65fa29a5a 100644
--- a/drivers/hid/hid-corsair-void.c
+++ b/drivers/hid/hid-corsair-void.c
@@ -727,6 +727,7 @@ static void corsair_void_remove(struct hid_device *hid_dev)
 		power_supply_unregister(drvdata->battery);
 
 	cancel_delayed_work_sync(&drvdata->delayed_firmware_work);
+	cancel_delayed_work_sync(&drvdata->delayed_status_work);
 	sysfs_remove_group(&hid_dev->dev.kobj, &corsair_void_attr_group);
 }
 

[PATCH] HID: corsair-void: add missing cancel delaywork

[Edward Adam Davis]

syzbot report a slab-use-after-free Read in usbhid_raw_request. [1]

The delayed_status_work still runs after usb device is removed.

[1]
BUG: KASAN: slab-use-after-free in usb_control_msg+0x434/0x4b0 drivers/usb/core/message.c:157
Read of size 4 at addr ffff88812223c67c by task kworker/0:3/2954

CPU: 0 UID: 0 PID: 2954 Comm: kworker/0:3 Not tainted 6.13.0-syzkaller-09485-g72deda0abee6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events corsair_void_status_work_handler
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 usb_control_msg+0x434/0x4b0 drivers/usb/core/message.c:157
 usbhid_set_raw_report drivers/hid/usbhid/hid-core.c:927 [inline]
 usbhid_raw_request+0x233/0x700 drivers/hid/usbhid/hid-core.c:1295
 __hid_hw_raw_request drivers/hid/hid-core.c:2457 [inline]
 hid_hw_raw_request+0x10a/0x150 drivers/hid/hid-core.c:2479
 corsair_void_request_status+0xc3/0x130 drivers/hid/hid-corsair-void.c:493
 corsair_void_status_work_handler+0x3f/0xb0 drivers/hid/hid-corsair-void.c:512
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Allocated by task 2954:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:394
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 usb_alloc_dev+0x55/0xdc0 drivers/usb/core/usb.c:650
 hub_port_connect drivers/usb/core/hub.c:5426 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5663 [inline]
 port_event drivers/usb/core/hub.c:5823 [inline]
 hub_event+0x28f9/0x4f40 drivers/usb/core/hub.c:5905
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Freed by task 2968:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x37/0x50 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4609 [inline]
 kfree+0x294/0x480 mm/slub.c:4757
 device_release+0xa1/0x240 drivers/base/core.c:2567
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1e4/0x5a0 lib/kobject.c:737
 put_device+0x1f/0x30 drivers/base/core.c:3773
 hub_port_connect drivers/usb/core/hub.c:5363 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5663 [inline]
 port_event drivers/usb/core/hub.c:5823 [inline]
 hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5905
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Fixes: 6ea2a6fd3872 ("HID: corsair-void: Add Corsair Void headset family driver")
Reported-by: syzbot+90ac8355c8ac84b1b464@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=90ac8355c8ac84b1b464
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
---
 drivers/hid/hid-corsair-void.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hid/hid-corsair-void.c b/drivers/hid/hid-corsair-void.c
index 6ece56b850fc..83d65fa29a5a 100644
--- a/drivers/hid/hid-corsair-void.c
+++ b/drivers/hid/hid-corsair-void.c
@@ -727,6 +727,7 @@ static void corsair_void_remove(struct hid_device *hid_dev)
 		power_supply_unregister(drvdata->battery);
 
 	cancel_delayed_work_sync(&drvdata->delayed_firmware_work);
+	cancel_delayed_work_sync(&drvdata->delayed_status_work);
 	sysfs_remove_group(&hid_dev->dev.kobj, &corsair_void_attr_group);
 }
 
-- 
2.43.0

Re: [syzbot] [usb?] KASAN: slab-use-after-free Read in usbhid_raw_request

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+90ac8355c8ac84b1b464@syzkaller.appspotmail.com
Tested-by: syzbot+90ac8355c8ac84b1b464@syzkaller.appspotmail.com

Tested on:

commit:         9682c35f usb: typec: thunderbolt: Remove IS_ERR check ..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
console output: https://syzkaller.appspot.com/x/log.txt?x=15ca81b0580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=ed7570f7f6046a71
dashboard link: https://syzkaller.appspot.com/bug?extid=90ac8355c8ac84b1b464
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=11b481b0580000

Note: testing is done by a robot and is best-effort only.

Re: [PATCH] HID: corsair-void: add missing cancel delaywork

[Greg KH]

On Thu, Feb 06, 2025 at 10:52:35AM +0800, Edward Adam Davis wrote:
> syzbot report a slab-use-after-free Read in usbhid_raw_request. [1]
> 
> The delayed_status_work still runs after usb device is removed.
> 
> [1]
> BUG: KASAN: slab-use-after-free in usb_control_msg+0x434/0x4b0 drivers/usb/core/message.c:157
> Read of size 4 at addr ffff88812223c67c by task kworker/0:3/2954
> 
> CPU: 0 UID: 0 PID: 2954 Comm: kworker/0:3 Not tainted 6.13.0-syzkaller-09485-g72deda0abee6 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
> Workqueue: events corsair_void_status_work_handler
> Call Trace:
>  <TASK>
>  __dump_stack lib/dump_stack.c:94 [inline]
>  dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
>  print_address_description mm/kasan/report.c:378 [inline]
>  print_report+0xc3/0x620 mm/kasan/report.c:489
>  kasan_report+0xd9/0x110 mm/kasan/report.c:602
>  usb_control_msg+0x434/0x4b0 drivers/usb/core/message.c:157
>  usbhid_set_raw_report drivers/hid/usbhid/hid-core.c:927 [inline]
>  usbhid_raw_request+0x233/0x700 drivers/hid/usbhid/hid-core.c:1295
>  __hid_hw_raw_request drivers/hid/hid-core.c:2457 [inline]
>  hid_hw_raw_request+0x10a/0x150 drivers/hid/hid-core.c:2479
>  corsair_void_request_status+0xc3/0x130 drivers/hid/hid-corsair-void.c:493
>  corsair_void_status_work_handler+0x3f/0xb0 drivers/hid/hid-corsair-void.c:512
>  process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
>  process_scheduled_works kernel/workqueue.c:3317 [inline]
>  worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
>  kthread+0x3af/0x750 kernel/kthread.c:464
>  ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
>  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
>  </TASK>
> 
> Allocated by task 2954:
>  kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
>  kasan_save_track+0x14/0x30 mm/kasan/common.c:68
>  poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
>  __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:394
>  kmalloc_noprof include/linux/slab.h:901 [inline]
>  kzalloc_noprof include/linux/slab.h:1037 [inline]
>  usb_alloc_dev+0x55/0xdc0 drivers/usb/core/usb.c:650
>  hub_port_connect drivers/usb/core/hub.c:5426 [inline]
>  hub_port_connect_change drivers/usb/core/hub.c:5663 [inline]
>  port_event drivers/usb/core/hub.c:5823 [inline]
>  hub_event+0x28f9/0x4f40 drivers/usb/core/hub.c:5905
>  process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
>  process_scheduled_works kernel/workqueue.c:3317 [inline]
>  worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
>  kthread+0x3af/0x750 kernel/kthread.c:464
>  ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
>  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
> 
> Freed by task 2968:
>  kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
>  kasan_save_track+0x14/0x30 mm/kasan/common.c:68
>  kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576
>  poison_slab_object mm/kasan/common.c:247 [inline]
>  __kasan_slab_free+0x37/0x50 mm/kasan/common.c:264
>  kasan_slab_free include/linux/kasan.h:233 [inline]
>  slab_free_hook mm/slub.c:2353 [inline]
>  slab_free mm/slub.c:4609 [inline]
>  kfree+0x294/0x480 mm/slub.c:4757
>  device_release+0xa1/0x240 drivers/base/core.c:2567
>  kobject_cleanup lib/kobject.c:689 [inline]
>  kobject_release lib/kobject.c:720 [inline]
>  kref_put include/linux/kref.h:65 [inline]
>  kobject_put+0x1e4/0x5a0 lib/kobject.c:737
>  put_device+0x1f/0x30 drivers/base/core.c:3773
>  hub_port_connect drivers/usb/core/hub.c:5363 [inline]
>  hub_port_connect_change drivers/usb/core/hub.c:5663 [inline]
>  port_event drivers/usb/core/hub.c:5823 [inline]
>  hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5905
>  process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
>  process_scheduled_works kernel/workqueue.c:3317 [inline]
>  worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
>  kthread+0x3af/0x750 kernel/kthread.c:464
>  ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
>  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
> 
> Fixes: 6ea2a6fd3872 ("HID: corsair-void: Add Corsair Void headset family driver")
> Reported-by: syzbot+90ac8355c8ac84b1b464@syzkaller.appspotmail.com
> Closes: https://syzkaller.appspot.com/bug?extid=90ac8355c8ac84b1b464
> Signed-off-by: Edward Adam Davis <eadavis@qq.com>
> ---
>  drivers/hid/hid-corsair-void.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/hid/hid-corsair-void.c b/drivers/hid/hid-corsair-void.c
> index 6ece56b850fc..83d65fa29a5a 100644
> --- a/drivers/hid/hid-corsair-void.c
> +++ b/drivers/hid/hid-corsair-void.c
> @@ -727,6 +727,7 @@ static void corsair_void_remove(struct hid_device *hid_dev)
>  		power_supply_unregister(drvdata->battery);
>  
>  	cancel_delayed_work_sync(&drvdata->delayed_firmware_work);
> +	cancel_delayed_work_sync(&drvdata->delayed_status_work);
>  	sysfs_remove_group(&hid_dev->dev.kobj, &corsair_void_attr_group);
>  }
>  
> -- 
> 2.43.0
> 

Hi,

This is the friendly patch-bot of Greg Kroah-Hartman.  You have sent him
a patch that has triggered this response.  He used to manually respond
to these common problems, but in order to save his sanity (he kept
writing the same thing over and over, yet to different people), I was
created.  Hopefully you will not take offence and will fix the problem
in your patch and resubmit it so that it can be accepted into the Linux
kernel tree.

You are receiving this message because of the following common error(s)
as indicated below:

- You have marked a patch with a "Fixes:" tag for a commit that is in an
  older released kernel, yet you do not have a cc: stable line in the
  signed-off-by area at all, which means that the patch will not be
  applied to any older kernel releases.  To properly fix this, please
  follow the documented rules in the
  Documentation/process/stable-kernel-rules.rst file for how to resolve
  this.

If you wish to discuss this problem further, or you have questions about
how to resolve this issue, please feel free to respond to this email and
Greg will reply once he has dug out from the pending patches received
from other developers.

thanks,

greg k-h's patch email bot