[syzbot] [net?] [usb?] WARNING: ODEBUG bug in get_taint

[syzbot] [net?] [usb?] WARNING: ODEBUG bug in get_taint

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    d07b43284ab3 Merge tag 'for-linus' of git://git.kernel.org..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=11a20ad5980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=27ce3a8f7447229f
dashboard link: https://syzkaller.appspot.com/bug?extid=ffe5c7db7c30a0fbb165
compiler:       arm-linux-gnueabi-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/8ead8862021c/non_bootable_disk-d07b4328.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/79ba6ea858b2/vmlinux-d07b4328.xz
kernel image: https://storage.googleapis.com/syzbot-assets/64a75a9460ef/zImage-d07b4328.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ffe5c7db7c30a0fbb165@syzkaller.appspotmail.com

asix 1-1:0.0 eth1: register 'asix' at usb-dummy_hcd.0-1, ASIX AX88178 USB 2.0 Ethernet, 02:0d:96:66:af:53
usb 1-1: USB disconnect, device number 4
asix 1-1:0.0 eth1: unregister 'asix' usb-dummy_hcd.0-1, ASIX AX88178 USB 2.0 Ethernet
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3790 at lib/debugobjects.c:515 debug_print_object+0xc4/0xd8 lib/debugobjects.c:515
ODEBUG: free active (active state 0) object: 84babfcc object type: work_struct hint: usbnet_deferred_kevent+0x0/0x388 drivers/net/usb/usbnet.c:630
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 UID: 0 PID: 3790 Comm: kworker/1:4 Not tainted 6.11.0-rc3-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: usb_hub_wq hub_event
Call trace: 
[<81954e48>] (dump_backtrace) from [<81954f44>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:826228c4 r5:00000000 r4:8200bc94
[<81954f2c>] (show_stack) from [<81972c18>] (__dump_stack lib/dump_stack.c:93 [inline])
[<81954f2c>] (show_stack) from [<81972c18>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119)
[<81972bc4>] (dump_stack_lvl) from [<81972c58>] (dump_stack+0x18/0x1c lib/dump_stack.c:128)
 r5:00000000 r4:8286bd18
[<81972c40>] (dump_stack) from [<819559ec>] (panic+0x120/0x358 kernel/panic.c:348)
[<819558cc>] (panic) from [<80242204>] (check_panic_on_warn kernel/panic.c:241 [inline])
[<819558cc>] (panic) from [<80242204>] (get_taint+0x0/0x1c kernel/panic.c:236)
 r3:8260c5c4 r2:00000001 r1:81ff44b8 r0:81ffc290
 r7:808269c4
[<80242190>] (check_panic_on_warn) from [<80242358>] (__warn+0x7c/0x180 kernel/panic.c:735)
[<802422dc>] (__warn) from [<80242644>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:768)
 r8:00000009 r7:8205a9ac r6:dfdada8c r5:840eb000 r4:00000000
[<80242460>] (warn_slowpath_fmt) from [<808269c4>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:515)
 r10:00000005 r9:84bab800 r8:81a01c24 r7:82084f34 r6:828cf69c r5:dfdadb34
 r4:8260cda4
[<80826900>] (debug_print_object) from [<80828264>] (__debug_check_no_obj_freed lib/debugobjects.c:990 [inline])
[<80826900>] (debug_print_object) from [<80828264>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1020)
 r8:84bac000 r7:84babfcc r6:00000100 r5:00000003 r4:00000000
[<80828010>] (debug_check_no_obj_freed) from [<804bc624>] (slab_free_hook mm/slub.c:2219 [inline])
[<80828010>] (debug_check_no_obj_freed) from [<804bc624>] (slab_free mm/slub.c:4473 [inline])
[<80828010>] (debug_check_no_obj_freed) from [<804bc624>] (kfree+0x198/0x338 mm/slub.c:4594)
 r10:82777c18 r9:849a7480 r8:84bab800 r7:80461638 r6:82c023c0 r5:ddea33a0
 r4:84bab800
[<804bc48c>] (kfree) from [<80461638>] (kvfree+0x2c/0x30 mm/util.c:696)
 r10:82777c18 r9:849a7480 r8:84bab800 r7:00000000 r6:8503a5c0 r5:85081f80
 r4:84bab800
[<8046160c>] (kvfree) from [<814bdc9c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031)
 r5:85081f80 r4:84bab800
[<814bdc70>] (netdev_release) from [<80a6d5c8>] (device_release+0x38/0xa8 drivers/base/core.c:2582)
 r5:85081f80 r4:84babbc0
[<80a6d590>] (device_release) from [<8192ecd0>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80a6d590>] (device_release) from [<8192ecd0>] (kobject_release lib/kobject.c:720 [inline])
[<80a6d590>] (device_release) from [<8192ecd0>] (kref_put include/linux/kref.h:65 [inline])
[<80a6d590>] (device_release) from [<8192ecd0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737)
 r5:81b4b6cc r4:84babbc0
[<8192ec08>] (kobject_put) from [<80a6d7f4>] (put_device+0x18/0x1c drivers/base/core.c:3790)
 r7:849a4000 r6:84bab90c r5:84bab800 r4:00000000
[<80a6d7dc>] (put_device) from [<81472c04>] (free_netdev+0x114/0x18c net/core/dev.c:11197)
[<81472af0>] (free_netdev) from [<80d4ef68>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636)
 r6:84babf94 r5:84babe80 r4:00000000
[<80d4eebc>] (usbnet_disconnect) from [<80db6c88>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461)
 r8:00000044 r7:849a4030 r6:82777c18 r5:00000000 r4:849a4000
[<80db6c04>] (usb_unbind_interface) from [<80a756cc>] (device_remove drivers/base/dd.c:568 [inline])
[<80db6c04>] (usb_unbind_interface) from [<80a756cc>] (device_remove+0x64/0x6c drivers/base/dd.c:560)
 r10:00000000 r9:849a7480 r8:00000044 r7:849a4074 r6:82777c18 r5:00000000
 r4:849a4030
[<80a75668>] (device_remove) from [<80a76be4>] (__device_release_driver drivers/base/dd.c:1272 [inline])
[<80a75668>] (device_remove) from [<80a76be4>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1295)
 r5:00000000 r4:849a4030
[<80a76a58>] (device_release_driver_internal) from [<80a76c70>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1318)
 r9:849a7480 r8:82fbc140 r7:82fbc138 r6:82fbc10c r5:849a4030 r4:82fbc130
[<80a76c58>] (device_release_driver) from [<80a74d50>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574)
[<80a74c84>] (bus_remove_device) from [<80a6ee60>] (device_del+0x148/0x38c drivers/base/core.c:3871)
 r9:849a7480 r8:840eb000 r7:04208060 r6:00000000 r5:849a4030 r4:849a4074
[<80a6ed18>] (device_del) from [<80db46a4>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418)
 r10:00000000 r9:00000000 r8:849a4000 r7:849a7400 r6:851af308 r5:849a7400
 r4:60000113
[<80db45c8>] (usb_disable_device) from [<80da9504>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304)
 r10:00000001 r9:84348800 r8:849a74c4 r7:83c83000 r6:849a7480 r5:849a7400
 r4:60000113
[<80da9418>] (usb_disconnect) from [<80dac1b4>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline])
[<80da9418>] (usb_disconnect) from [<80dac1b4>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline])
[<80da9418>] (usb_disconnect) from [<80dac1b4>] (port_event drivers/usb/core/hub.c:5821 [inline])
[<80da9418>] (usb_disconnect) from [<80dac1b4>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903)
 r10:00000001 r9:00000100 r8:8390af00 r7:849a7400 r6:83c82800 r5:83c83210
 r4:00000001
[<80dab33c>] (hub_event) from [<80265f30>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231)
 r10:82f1da05 r9:840eb000 r8:01800000 r7:ddde4000 r6:82f1da00 r5:8390af00
 r4:85005f00
[<80265d7c>] (process_one_work) from [<80266b14>] (process_scheduled_works kernel/workqueue.c:3312 [inline])
[<80265d7c>] (process_one_work) from [<80266b14>] (worker_thread+0x1ec/0x3f4 kernel/workqueue.c:3390)
 r10:840eb000 r9:85005f2c r8:61c88647 r7:ddde4020 r6:82604d40 r5:ddde4000
 r4:85005f00
[<80266928>] (worker_thread) from [<8026fb6c>] (kthread+0x104/0x134 kernel/kthread.c:389)
 r10:00000000 r9:df87de78 r8:84ba0280 r7:85005f00 r6:80266928 r5:840eb000
 r4:8500c1c0
[<8026fa68>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdfdadfb0 to 0xdfdadff8)
dfa0:                                     00000000 00000000 00000000 00000000
dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fa68 r4:8500c1c0
Rebooting in 86400 seconds..


---
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#syz undup

Re: [syzbot] [usb?] WARNING: ODEBUG bug in get_taint

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit:    c2ee9f594da8 KVM: selftests: Fix build on on non-x86 archi..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=167f48a7980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=f68c7e50d4601b1
dashboard link: https://syzkaller.appspot.com/bug?extid=ffe5c7db7c30a0fbb165
compiler:       arm-linux-gnueabi-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1267b640580000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/8ead8862021c/non_bootable_disk-c2ee9f59.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/bcc7a230eb09/vmlinux-c2ee9f59.xz
kernel image: https://storage.googleapis.com/syzbot-assets/96b5df297c4b/zImage-c2ee9f59.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ffe5c7db7c30a0fbb165@syzkaller.appspotmail.com

cdc_ncm 1-1:1.0 usb0: register 'cdc_ncm' at usb-dummy_hcd.0-1, CDC NCM (NO ZLP), 42:42:42:42:42:42
usb 1-1: USB disconnect, device number 23
cdc_ncm 1-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.0-1, CDC NCM (NO ZLP)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 10 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514
ODEBUG: free active (active state 0) object: 84ff57cc object type: work_struct hint: usbnet_deferred_kevent+0x0/0x394 drivers/net/usb/usbnet.c:633
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.12.0-rc4-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: usb_hub_wq hub_event
Call trace: 
[<81999930>] (dump_backtrace) from [<81999a2c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622f44 r5:00000000 r4:8203d814
[<81999a14>] (show_stack) from [<819b7ec8>] (__dump_stack lib/dump_stack.c:94 [inline])
[<81999a14>] (show_stack) from [<819b7ec8>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<819b7e74>] (dump_stack_lvl) from [<819b7f08>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82870d18
[<819b7ef0>] (dump_stack) from [<8199a558>] (panic+0x120/0x374 kernel/panic.c:354)
[<8199a438>] (panic) from [<802420e0>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<8199a438>] (panic) from [<802420e0>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8260c5c4 r2:00000001 r1:82025be8 r0:8202d650
 r7:80854748
[<8024206c>] (check_panic_on_warn) from [<80242244>] (__warn+0x80/0x188 kernel/panic.c:748)
[<802421c4>] (__warn) from [<80242534>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:783)
 r8:00000009 r7:8208c8e8 r6:df841a8c r5:82e36c00 r4:00000000
[<80242350>] (warn_slowpath_fmt) from [<80854748>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514)
 r10:00000005 r9:84ff5000 r8:81a01c24 r7:820b76d8 r6:828dd084 r5:df841b34
 r4:8260cda4
[<80854684>] (debug_print_object) from [<80855fd8>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline])
[<80854684>] (debug_print_object) from [<80855fd8>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019)
 r8:84ff5800 r7:84ff57cc r6:00000100 r5:00000003 r4:00000000
[<80855d84>] (debug_check_no_obj_freed) from [<804c916c>] (slab_free_hook mm/slub.c:2273 [inline])
[<80855d84>] (debug_check_no_obj_freed) from [<804c916c>] (slab_free mm/slub.c:4579 [inline])
[<80855d84>] (debug_check_no_obj_freed) from [<804c916c>] (kfree+0x190/0x394 mm/slub.c:4727)
 r10:8277e5bc r9:84706480 r8:84ff5000 r7:8046d140 r6:82c023c0 r5:ddeacdc0
 r4:84ff5000
[<804c8fdc>] (kfree) from [<8046d140>] (kvfree+0x2c/0x30 mm/util.c:701)
 r10:8277e5bc r9:84706480 r8:84ff5000 r7:00000000 r6:8505cb00 r5:8509c780
 r4:84ff5000
[<8046d114>] (kvfree) from [<814fbd38>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2034)
 r5:8509c780 r4:84ff5000
[<814fbd0c>] (netdev_release) from [<80aa3aa0>] (device_release+0x38/0xa8 drivers/base/core.c:2575)
 r5:8509c780 r4:84ff53c0
[<80aa3a68>] (device_release) from [<8197378c>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80aa3a68>] (device_release) from [<8197378c>] (kobject_release lib/kobject.c:720 [inline])
[<80aa3a68>] (device_release) from [<8197378c>] (kref_put include/linux/kref.h:65 [inline])
[<80aa3a68>] (device_release) from [<8197378c>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737)
 r5:81b4c9c4 r4:84ff53c0
[<819736ec>] (kobject_put) from [<80aa3ccc>] (put_device+0x18/0x1c drivers/base/core.c:3783)
 r7:84707000 r6:00000000 r5:84ff5000 r4:00000000
[<80aa3cb4>] (put_device) from [<814b03d8>] (free_netdev+0x134/0x1ac net/core/dev.c:11255)
[<814b02a4>] (free_netdev) from [<80d87a48>] (usbnet_disconnect+0xb8/0xfc drivers/net/usb/usbnet.c:1652)
 r6:84ff5794 r5:84ff5680 r4:00000000
[<80d87990>] (usbnet_disconnect) from [<80df0138>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461)
 r8:00000044 r7:84707030 r6:8277e5bc r5:00000000 r4:84707000
[<80df00b4>] (usb_unbind_interface) from [<80aabb8c>] (device_remove drivers/base/dd.c:569 [inline])
[<80df00b4>] (usb_unbind_interface) from [<80aabb8c>] (device_remove+0x64/0x6c drivers/base/dd.c:561)
 r10:00000000 r9:84706480 r8:00000044 r7:84707074 r6:8277e5bc r5:00000000
 r4:84707030
[<80aabb28>] (device_remove) from [<80aad078>] (__device_release_driver drivers/base/dd.c:1273 [inline])
[<80aabb28>] (device_remove) from [<80aad078>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1296)
 r5:00000000 r4:84707030
[<80aaceec>] (device_release_driver_internal) from [<80aad104>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1319)
 r9:84706480 r8:82f65640 r7:82f65638 r6:82f6560c r5:84707030 r4:82f65630
[<80aad0ec>] (device_release_driver) from [<80aab1ec>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:576)
[<80aab120>] (bus_remove_device) from [<80aa5528>] (device_del+0x148/0x38c drivers/base/core.c:3864)
 r9:84706480 r8:82e36c00 r7:04208060 r6:00000000 r5:84707030 r4:84707074
[<80aa53e0>] (device_del) from [<80dedb54>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418)
 r10:00000000 r9:00000000 r8:84707000 r7:84706400 r6:850a5248 r5:00000001
 r4:00000038
[<80deda78>] (usb_disable_device) from [<80de29b8>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304)
 r10:00000001 r9:84c65200 r8:847064c4 r7:83dee400 r6:84706480 r5:84706400
 r4:60000113
[<80de28cc>] (usb_disconnect) from [<80de5668>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline])
[<80de28cc>] (usb_disconnect) from [<80de5668>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline])
[<80de28cc>] (usb_disconnect) from [<80de5668>] (port_event drivers/usb/core/hub.c:5821 [inline])
[<80de28cc>] (usb_disconnect) from [<80de5668>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903)
 r10:00000001 r9:00000100 r8:83b10700 r7:84706400 r6:8381e400 r5:83dee610
 r4:00000001
[<80de47f0>] (hub_event) from [<80266034>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3229)
 r10:82e64805 r9:82e36c00 r8:00800000 r7:dddd00c0 r6:82e64800 r5:83b10700
 r4:82cb6080
[<80265e80>] (process_one_work) from [<80266c18>] (process_scheduled_works kernel/workqueue.c:3310 [inline])
[<80265e80>] (process_one_work) from [<80266c18>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3391)
 r10:82e36c00 r9:82cb60ac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0
 r4:82cb6080
[<80266a2c>] (worker_thread) from [<8026fc94>] (kthread+0x104/0x134 kernel/kthread.c:389)
 r10:00000000 r9:df839e78 r8:82cb5b40 r7:82cb6080 r6:80266a2c r5:82e36c00
 r4:82cb5980
[<8026fb90>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdf841fb0 to 0xdf841ff8)
1fa0:                                     00000000 00000000 00000000 00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fb90 r4:82cb5980
Rebooting in 86400 seconds..


---
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.

Re: [syzbot] [usb?] WARNING: ODEBUG bug in get_taint

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit:    e42b1a9a2557 Merge tag 'spi-fix-v6.12-rc5' of git://git.ke..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16fb4540580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=59c645aba1a913f
dashboard link: https://syzkaller.appspot.com/bug?extid=ffe5c7db7c30a0fbb165
compiler:       arm-linux-gnueabi-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16f7ee40580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12953687980000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/8ead8862021c/non_bootable_disk-e42b1a9a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/58af25eb211f/vmlinux-e42b1a9a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7c1b9c1d3d1b/zImage-e42b1a9a.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ffe5c7db7c30a0fbb165@syzkaller.appspotmail.com

dm9601 1-1:47.0 eth1: unregister 'dm9601' usb-dummy_hcd.0-1, Davicom DM96xx USB 10/100 Ethernet
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1781 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514
ODEBUG: free active (active state 0) object: 8436afcc object type: work_struct hint: usbnet_deferred_kevent+0x0/0x394 drivers/net/usb/usbnet.c:633
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 UID: 0 PID: 1781 Comm: kworker/0:3 Not tainted 6.12.0-rc5-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: usb_hub_wq hub_event
Call trace: 
[<8199a4d8>] (dump_backtrace) from [<8199a5d4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622f44 r5:00000000 r4:8203d914
[<8199a5bc>] (show_stack) from [<819b8a70>] (__dump_stack lib/dump_stack.c:94 [inline])
[<8199a5bc>] (show_stack) from [<819b8a70>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<819b8a1c>] (dump_stack_lvl) from [<819b8ab0>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82870d18
[<819b8a98>] (dump_stack) from [<8199b100>] (panic+0x120/0x374 kernel/panic.c:354)
[<8199afe0>] (panic) from [<802420e0>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<8199afe0>] (panic) from [<802420e0>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8260c5c4 r2:00000001 r1:82025ce8 r0:8202d750
 r7:808547a0
[<8024206c>] (check_panic_on_warn) from [<80242244>] (__warn+0x80/0x188 kernel/panic.c:748)
[<802421c4>] (__warn) from [<80242534>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:783)
 r8:00000009 r7:8208ca38 r6:eb0b9a8c r5:8357b000 r4:00000000
[<80242350>] (warn_slowpath_fmt) from [<808547a0>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514)
 r10:00000005 r9:8436a800 r8:81a01c24 r7:820b7828 r6:828dd084 r5:eb0b9b34
 r4:8260cda4
[<808546dc>] (debug_print_object) from [<80856030>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline])
[<808546dc>] (debug_print_object) from [<80856030>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019)
 r8:8436b000 r7:8436afcc r6:00000100 r5:00000003 r4:00000000
[<80855ddc>] (debug_check_no_obj_freed) from [<804c91c4>] (slab_free_hook mm/slub.c:2273 [inline])
[<80855ddc>] (debug_check_no_obj_freed) from [<804c91c4>] (slab_free mm/slub.c:4579 [inline])
[<80855ddc>] (debug_check_no_obj_freed) from [<804c91c4>] (kfree+0x190/0x394 mm/slub.c:4727)
 r10:8277dc60 r9:844b0c80 r8:8436a800 r7:8046d198 r6:82c023c0 r5:dde90aa0
 r4:8436a800
[<804c9034>] (kfree) from [<8046d198>] (kvfree+0x2c/0x30 mm/util.c:701)
 r10:8277dc60 r9:844b0c80 r8:8436a800 r7:00000000 r6:845e6200 r5:84745e80
 r4:8436a800
[<8046d16c>] (kvfree) from [<814fc658>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2034)
 r5:84745e80 r4:8436a800
[<814fc62c>] (netdev_release) from [<80aa3b24>] (device_release+0x38/0xa8 drivers/base/core.c:2575)
 r5:84745e80 r4:8436abc0
[<80aa3aec>] (device_release) from [<8197432c>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80aa3aec>] (device_release) from [<8197432c>] (kobject_release lib/kobject.c:720 [inline])
[<80aa3aec>] (device_release) from [<8197432c>] (kref_put include/linux/kref.h:65 [inline])
[<80aa3aec>] (device_release) from [<8197432c>] (kobject_put+0xa0/0x1f4 lib/kobject.c:737)
 r5:81b4c9c4 r4:8436abc0
[<8197428c>] (kobject_put) from [<80aa3d50>] (put_device+0x18/0x1c drivers/base/core.c:3783)
 r7:844b3800 r6:00000000 r5:8436a800 r4:00000000
[<80aa3d38>] (put_device) from [<814b0d24>] (free_netdev+0x134/0x1ac net/core/dev.c:11255)
[<814b0bf0>] (free_netdev) from [<80d88104>] (usbnet_disconnect+0xb8/0xfc drivers/net/usb/usbnet.c:1652)
 r6:8436af94 r5:8436ae80 r4:00000000
[<80d8804c>] (usbnet_disconnect) from [<80df0930>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461)
 r8:00000044 r7:844b3830 r6:8277dc60 r5:00000000 r4:844b3800
[<80df08ac>] (usb_unbind_interface) from [<80aabc14>] (device_remove drivers/base/dd.c:569 [inline])
[<80df08ac>] (usb_unbind_interface) from [<80aabc14>] (device_remove+0x64/0x6c drivers/base/dd.c:561)
 r10:00000000 r9:844b0c80 r8:00000044 r7:844b3874 r6:8277dc60 r5:00000000
 r4:844b3830
[<80aabbb0>] (device_remove) from [<80aad100>] (__device_release_driver drivers/base/dd.c:1273 [inline])
[<80aabbb0>] (device_remove) from [<80aad100>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1296)
 r5:00000000 r4:844b3830
[<80aacf74>] (device_release_driver_internal) from [<80aad18c>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1319)
 r9:844b0c80 r8:83410140 r7:83410138 r6:8341010c r5:844b3830 r4:83410130
[<80aad174>] (device_release_driver) from [<80aab270>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:576)
[<80aab1a4>] (bus_remove_device) from [<80aa55ac>] (device_del+0x148/0x38c drivers/base/core.c:3864)
 r9:844b0c80 r8:8357b000 r7:04208060 r6:00000000 r5:844b3830 r4:844b3874
[<80aa5464>] (device_del) from [<80dee34c>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418)
 r10:00000000 r9:00000000 r8:844b3800 r7:844b0c00 r6:842e7a48 r5:00000002
 r4:00000070
[<80dee270>] (usb_disable_device) from [<80de31b0>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304)
 r10:00000001 r9:8450a000 r8:844b0cc4 r7:83d3a800 r6:844b0c80 r5:844b0c00
 r4:60000013
[<80de30c4>] (usb_disconnect) from [<80de5e60>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline])
[<80de30c4>] (usb_disconnect) from [<80de5e60>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline])
[<80de30c4>] (usb_disconnect) from [<80de5e60>] (port_event drivers/usb/core/hub.c:5821 [inline])
[<80de30c4>] (usb_disconnect) from [<80de5e60>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903)
 r10:00000001 r9:00000100 r8:83c7f100 r7:844b0c00 r6:83d3a000 r5:83d3aa10
 r4:00000001
[<80de4fe8>] (hub_event) from [<80266034>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3229)
 r10:82fd8405 r9:8357b000 r8:00800000 r7:dddd00c0 r6:82fd8400 r5:83c7f100
 r4:83e18e00
[<80265e80>] (process_one_work) from [<80266c18>] (process_scheduled_works kernel/workqueue.c:3310 [inline])
[<80265e80>] (process_one_work) from [<80266c18>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3391)
 r10:8357b000 r9:83e18e2c r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0
 r4:83e18e00
[<80266a2c>] (worker_thread) from [<8026fc94>] (kthread+0x104/0x134 kernel/kthread.c:389)
 r10:00000000 r9:df839e78 r8:83e16fc0 r7:83e18e00 r6:80266a2c r5:8357b000
 r4:83e16f40
[<8026fb90>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xeb0b9fb0 to 0xeb0b9ff8)
9fa0:                                     00000000 00000000 00000000 00000000
9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fb90 r4:83e16f40
Rebooting in 86400 seconds..


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