[syzbot] [net?] WARNING: ODEBUG bug in netdev_freemem (3)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 484193fecd2b Merge tag 'powerpc-6.9-2' of git://git.kernel..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1268a7b6180000
kernel config: https://syzkaller.appspot.com/x/.config?x=14c4d3466a37c9f4
dashboard link: https://syzkaller.appspot.com/bug?extid=83845bb93916bb30c048
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-484193fe.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/8e8ed1ba07eb/vmlinux-484193fe.xz
kernel image: https://storage.googleapis.com/syzbot-assets/267cfc5f351e/zImage-484193fe.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+83845b...@syzkaller.appspotmail.com

cdc_ncm 2-1:1.0 usb0: register 'cdc_ncm' at usb-dummy_hcd.1-1, CDC NCM (NO ZLP), 42:42:42:42:42:42
usb 2-1: USB disconnect, device number 97
cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.1-1, CDC NCM (NO ZLP)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8555 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514
ODEBUG: free active (active state 0) object: 8477b7ac 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: 0 PID: 8555 Comm: kworker/0:2 Not tainted 6.8.0-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: usb_hub_wq hub_event
Call trace:
[<81878b5c>] (dump_backtrace) from [<81878c58>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256)
r7:00000000 r6:82622e44 r5:00000000 r4:81fc46f8
[<81878c40>] (show_stack) from [<818963f4>] (__dump_stack lib/dump_stack.c:88 [inline])
[<81878c40>] (show_stack) from [<818963f4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114)
[<818963a0>] (dump_stack_lvl) from [<81896434>] (dump_stack+0x18/0x1c lib/dump_stack.c:123)
r5:00000000 r4:82858d18
[<8189641c>] (dump_stack) from [<81879700>] (panic+0x120/0x358 kernel/panic.c:348)
[<818795e0>] (panic) from [<8024390c>] (check_panic_on_warn kernel/panic.c:241 [inline])
[<818795e0>] (panic) from [<8024390c>] (print_tainted+0x0/0xa0 kernel/panic.c:236)
r3:8260c584 r2:00000001 r1:81fad380 r0:81fb4f28
r7:8080b528
[<80243898>] (check_panic_on_warn) from [<80243b00>] (__warn+0x7c/0x180 kernel/panic.c:694)
[<80243a84>] (__warn) from [<80243dec>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727)
r8:00000009 r7:820112c8 r6:dfdada7c r5:834b0c00 r4:00000000
[<80243c08>] (warn_slowpath_fmt) from [<8080b528>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514)
r10:00000005 r9:8477b000 r8:81a02b44 r7:820391d0 r6:828bc414 r5:dfdadb24
r4:8260ce18
[<8080b464>] (debug_print_object) from [<8080cdc0>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline])
[<8080b464>] (debug_print_object) from [<8080cdc0>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019)
r8:8477b800 r7:8477b7ac r6:00000100 r5:00000003 r4:00000000
[<8080cb6c>] (debug_check_no_obj_freed) from [<804b2458>] (slab_free_hook mm/slub.c:2078 [inline])
[<8080cb6c>] (debug_check_no_obj_freed) from [<804b2458>] (slab_free mm/slub.c:4280 [inline])
[<8080cb6c>] (debug_check_no_obj_freed) from [<804b2458>] (kfree+0x1a0/0x334 mm/slub.c:4390)
r10:82775a30 r9:8513d880 r8:8477b000 r7:8045a5b4 r6:82c023c0 r5:dde99ce0
r4:8477b000
[<804b22b8>] (kfree) from [<8045a5b4>] (kvfree+0x2c/0x30 mm/util.c:680)
r10:82775a30 r9:8513d880 r8:8477b000 r7:00000000 r6:84cd7280 r5:85154100
r4:8477b000
[<8045a588>] (kvfree) from [<813b3384>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797)
r5:85154100 r4:8477b000
[<813b3368>] (netdev_freemem) from [<813ee3e4>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031)
[<813ee3b8>] (netdev_release) from [<80a41748>] (device_release+0x38/0xa8 drivers/base/core.c:2565)
r5:85154100 r4:8477b3b8
[<80a41710>] (device_release) from [<81852ac0>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80a41710>] (device_release) from [<81852ac0>] (kobject_release lib/kobject.c:720 [inline])
[<80a41710>] (device_release) from [<81852ac0>] (kref_put include/linux/kref.h:65 [inline])
[<80a41710>] (device_release) from [<81852ac0>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737)
r5:81b48594 r4:8477b3b8
[<818529f8>] (kobject_put) from [<80a419d0>] (put_device+0x18/0x1c drivers/base/core.c:3813)
r7:8513c800 r6:8477b10c r5:8477b000 r4:00000000
[<80a419b8>] (put_device) from [<813a46d0>] (free_netdev+0x108/0x188 net/core/dev.c:10993)
[<813a45c8>] (free_netdev) from [<80d10dc8>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636)
r6:8477b774 r5:8477b660 r4:00000000
[<80d10d1c>] (usbnet_disconnect) from [<80d6bd40>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461)
r8:00000044 r7:8513c830 r6:82775a30 r5:00000000 r4:8513c800
[<80d6bcbc>] (usb_unbind_interface) from [<80a49824>] (device_remove drivers/base/dd.c:568 [inline])
[<80d6bcbc>] (usb_unbind_interface) from [<80a49824>] (device_remove+0x64/0x6c drivers/base/dd.c:560)
r10:8513d880 r9:828eccc4 r8:00000044 r7:8513c874 r6:82775a30 r5:00000000
r4:8513c830
[<80a497c0>] (device_remove) from [<80a4ad3c>] (__device_release_driver drivers/base/dd.c:1270 [inline])
[<80a497c0>] (device_remove) from [<80a4ad3c>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293)
r5:00000000 r4:8513c830
[<80a4abb0>] (device_release_driver_internal) from [<80a4adc8>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316)
r9:828eccc4 r8:82ecaf40 r7:82ecaf38 r6:82ecaf0c r5:8513c830 r4:82ecaf30
[<80a4adb0>] (device_release_driver) from [<80a48ec8>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574)
[<80a48dfc>] (bus_remove_device) from [<80a42f4c>] (device_del+0x15c/0x3bc drivers/base/core.c:3894)
r9:828eccc4 r8:8513c800 r7:834b0c00 r6:8533a608 r5:04208060 r4:8513c830
[<80a42df0>] (device_del) from [<80d6979c>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418)
r10:00000000 r9:00000000 r8:8513c800 r7:8513d800 r6:8533a608 r5:00000001
r4:00000038
[<80d696c0>] (usb_disable_device) from [<80d5e608>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2296)
r10:00000001 r9:85ca7a00 r8:8513d8c4 r7:83766000 r6:8513d880 r5:8513d800
r4:60000013
[<80d5e51c>] (usb_disconnect) from [<80d612b8>] (hub_port_connect drivers/usb/core/hub.c:5352 [inline])
[<80d5e51c>] (usb_disconnect) from [<80d612b8>] (hub_port_connect_change drivers/usb/core/hub.c:5652 [inline])
[<80d5e51c>] (usb_disconnect) from [<80d612b8>] (port_event drivers/usb/core/hub.c:5812 [inline])
[<80d5e51c>] (usb_disconnect) from [<80d612b8>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5894)
r10:00000001 r9:00000100 r8:83976300 r7:8513d800 r6:83cf9400 r5:83766210
r4:00000001
[<80d60440>] (hub_event) from [<802665fc>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254)
r10:82fcbe05 r9:834b0c00 r8:00000080 r7:dddcff00 r6:82fcbe00 r5:83976300
r4:84efea80
[<80266444>] (process_one_work) from [<80267320>] (process_scheduled_works kernel/workqueue.c:3335 [inline])
[<80266444>] (process_one_work) from [<80267320>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3416)
r10:834b0c00 r9:84efeaac r8:61c88647 r7:dddcff20 r6:82604d40 r5:dddcff00
r4:84efea80
[<80267134>] (worker_thread) from [<80270034>] (kthread+0x104/0x134 kernel/kthread.c:388)
r10:00000000 r9:e098de90 r8:8466cec0 r7:84efea80 r6:80267134 r5:834b0c00
r4:84e6d1c0
[<8026ff30>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134)
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 r5:8026ff30 r4:84e6d1c0
Rebooting in 86400 seconds..


---
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[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: 498e47cd1d1f Fix build errors due to new UIO_MEM_DMA_COHER..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15236d7e180000
kernel config: https://syzkaller.appspot.com/x/.config?x=43f1e0cbdb852271

dashboard link: https://syzkaller.appspot.com/bug?extid=83845bb93916bb30c048
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=15a9c4f9180000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/8ead8862021c/non_bootable_disk-498e47cd.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/88de02166e48/vmlinux-498e47cd.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2f2f314f3da3/zImage-498e47cd.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+83845b...@syzkaller.appspotmail.com

cdc_ncm 2-1:1.0 usb0: register 'cdc_ncm' at usb-dummy_hcd.1-1, CDC NCM (NO ZLP), 42:42:42:42:42:42

usb 2-1: USB disconnect, device number 80

cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-dummy_hcd.1-1, CDC NCM (NO ZLP)
------------[ cut here ]------------

WARNING: CPU: 1 PID: 44 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514
ODEBUG: free active (active state 0) object: 84e6c7ac 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 PID: 44 Comm: kworker/1:1 Not tainted 6.9.0-rc1-syzkaller #0

Hardware name: ARM-Versatile Express
Workqueue: usb_hub_wq hub_event
Call trace:

[<81878e9c>] (dump_backtrace) from [<81878f98>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256)
r7:00000000 r6:82622e44 r5:00000000 r4:81fc4710
[<81878f80>] (show_stack) from [<81896734>] (__dump_stack lib/dump_stack.c:88 [inline])
[<81878f80>] (show_stack) from [<81896734>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114)
[<818966e0>] (dump_stack_lvl) from [<81896774>] (dump_stack+0x18/0x1c lib/dump_stack.c:123)
r5:00000000 r4:82858d18
[<8189675c>] (dump_stack) from [<81879a40>] (panic+0x120/0x358 kernel/panic.c:348)
[<81879920>] (panic) from [<8024390c>] (check_panic_on_warn kernel/panic.c:241 [inline])
[<81879920>] (panic) from [<8024390c>] (print_tainted+0x0/0xa0 kernel/panic.c:236)
r3:8260c584 r2:00000001 r1:81fad394 r0:81fb4f3c
r7:8080b850

[<80243898>] (check_panic_on_warn) from [<80243b00>] (__warn+0x7c/0x180 kernel/panic.c:694)
[<80243a84>] (__warn) from [<80243dec>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727)

r8:00000009 r7:820112e0 r6:df915a7c r5:82ee6c00 r4:00000000
[<80243c08>] (warn_slowpath_fmt) from [<8080b850>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514)
r10:00000005 r9:84e6c000 r8:81a02b44 r7:820391e8 r6:828bc414 r5:df915b24
r4:8260ce18
[<8080b78c>] (debug_print_object) from [<8080d0e8>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline])
[<8080b78c>] (debug_print_object) from [<8080d0e8>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019)
r8:84e6c800 r7:84e6c7ac r6:00000100 r5:00000003 r4:00000000
[<8080ce94>] (debug_check_no_obj_freed) from [<804b2650>] (slab_free_hook mm/slub.c:2078 [inline])
[<8080ce94>] (debug_check_no_obj_freed) from [<804b2650>] (slab_free mm/slub.c:4280 [inline])
[<8080ce94>] (debug_check_no_obj_freed) from [<804b2650>] (kfree+0x1a0/0x334 mm/slub.c:4390)
r10:82775a30 r9:84d86080 r8:84e6c000 r7:8045a7ac r6:82c023c0 r5:ddea96a0
r4:84e6c000
[<804b24b0>] (kfree) from [<8045a7ac>] (kvfree+0x2c/0x30 mm/util.c:680)
r10:82775a30 r9:84d86080 r8:84e6c000 r7:00000000 r6:84f41900 r5:84f71480
r4:84e6c000
[<8045a780>] (kvfree) from [<813b36cc>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797)
r5:84f71480 r4:84e6c000
[<813b36b0>] (netdev_freemem) from [<813ee72c>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031)
[<813ee700>] (netdev_release) from [<80a41a70>] (device_release+0x38/0xa8 drivers/base/core.c:2565)
r5:84f71480 r4:84e6c3b8
[<80a41a38>] (device_release) from [<81852e00>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80a41a38>] (device_release) from [<81852e00>] (kobject_release lib/kobject.c:720 [inline])
[<80a41a38>] (device_release) from [<81852e00>] (kref_put include/linux/kref.h:65 [inline])
[<80a41a38>] (device_release) from [<81852e00>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737)
r5:81b485c4 r4:84e6c3b8
[<81852d38>] (kobject_put) from [<80a41cf8>] (put_device+0x18/0x1c drivers/base/core.c:3813)
r7:84d86400 r6:84e6c10c r5:84e6c000 r4:00000000
[<80a41ce0>] (put_device) from [<813a4a18>] (free_netdev+0x108/0x188 net/core/dev.c:10993)
[<813a4910>] (free_netdev) from [<80d110f0>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636)
r6:84e6c774 r5:84e6c660 r4:00000000
[<80d11044>] (usbnet_disconnect) from [<80d6c068>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461)
r8:00000044 r7:84d86430 r6:82775a30 r5:00000000 r4:84d86400
[<80d6bfe4>] (usb_unbind_interface) from [<80a49b4c>] (device_remove drivers/base/dd.c:568 [inline])
[<80d6bfe4>] (usb_unbind_interface) from [<80a49b4c>] (device_remove+0x64/0x6c drivers/base/dd.c:560)
r10:84d86080 r9:828eccc4 r8:00000044 r7:84d86474 r6:82775a30 r5:00000000
r4:84d86430
[<80a49ae8>] (device_remove) from [<80a4b064>] (__device_release_driver drivers/base/dd.c:1270 [inline])
[<80a49ae8>] (device_remove) from [<80a4b064>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293)
r5:00000000 r4:84d86430
[<80a4aed8>] (device_release_driver_internal) from [<80a4b0f0>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316)
r9:828eccc4 r8:82eaa540 r7:82eaa538 r6:82eaa50c r5:84d86430 r4:82eaa530
[<80a4b0d8>] (device_release_driver) from [<80a491f0>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574)
[<80a49124>] (bus_remove_device) from [<80a43274>] (device_del+0x15c/0x3bc drivers/base/core.c:3894)
r9:828eccc4 r8:84d86400 r7:82ee6c00 r6:84f72e08 r5:04208060 r4:84d86430
[<80a43118>] (device_del) from [<80d69ac4>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418)
r10:00000000 r9:00000000 r8:84d86400 r7:84d86000 r6:84f72e08 r5:00000001
r4:00000038
[<80d699e8>] (usb_disable_device) from [<80d5e930>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2296)
r10:00000001 r9:84110200 r8:84d860c4 r7:8391e400 r6:84d86080 r5:84d86000
r4:60000013
[<80d5e844>] (usb_disconnect) from [<80d615e0>] (hub_port_connect drivers/usb/core/hub.c:5352 [inline])
[<80d5e844>] (usb_disconnect) from [<80d615e0>] (hub_port_connect_change drivers/usb/core/hub.c:5652 [inline])
[<80d5e844>] (usb_disconnect) from [<80d615e0>] (port_event drivers/usb/core/hub.c:5812 [inline])
[<80d5e844>] (usb_disconnect) from [<80d615e0>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5894)
r10:00000001 r9:00000100 r8:83b28500 r7:84d86000 r6:8391dc00 r5:8391e610
r4:00000001
[<80d60768>] (hub_event) from [<802665fc>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254)
r10:83400a05 r9:82ee6c00 r8:00000180 r7:ddde3f00 r6:83400a00 r5:83b28500
r4:82eae680

[<80266444>] (process_one_work) from [<80267320>] (process_scheduled_works kernel/workqueue.c:3335 [inline])
[<80266444>] (process_one_work) from [<80267320>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3416)

r10:82ee6c00 r9:82eae6ac r8:61c88647 r7:ddde3f20 r6:82604d40 r5:ddde3f00
r4:82eae680

[<80267134>] (worker_thread) from [<80270034>] (kthread+0x104/0x134 kernel/kthread.c:388)

r10:00000000 r9:df879e90 r8:82eb0500 r7:82eae680 r6:80267134 r5:82ee6c00
r4:82eb0280

[<8026ff30>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134)

Exception stack(0xdf915fb0 to 0xdf915ff8)
5fa0: 00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026ff30 r4:82eb0280

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.

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: 72374d71c315 Merge tag 'pull-sysfs-annotation-fix' of git:..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1391f7cb180000
kernel config: https://syzkaller.appspot.com/x/.config?x=2881987c7d7b722d

dashboard link: https://syzkaller.appspot.com/bug?extid=83845bb93916bb30c048
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=147d8f6d180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14fb0bf3180000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/8ead8862021c/non_bootable_disk-72374d71.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/664d9f3a4812/vmlinux-72374d71.xz
kernel image: https://storage.googleapis.com/syzbot-assets/767ecc5e77ad/zImage-72374d71.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+83845b...@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 10
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: 45 at lib/debugobjects.c:514 debug_print_object+0xc4/0xd8 lib/debugobjects.c:514
ODEBUG: free active (active state 0) object: 841377ac 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: 0 PID: 45 Comm: kworker/0:2 Not tainted 6.9.0-rc3-syzkaller #0

Hardware name: ARM-Versatile Express
Workqueue: usb_hub_wq hub_event
Call trace:

[<818a18bc>] (dump_backtrace) from [<818a19b8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256)
r7:00000000 r6:82622e44 r5:00000000 r4:81fcea10
[<818a19a0>] (show_stack) from [<818bf0e0>] (__dump_stack lib/dump_stack.c:88 [inline])
[<818a19a0>] (show_stack) from [<818bf0e0>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114)
[<818bf08c>] (dump_stack_lvl) from [<818bf120>] (dump_stack+0x18/0x1c lib/dump_stack.c:123)
r5:00000000 r4:8285ad18
[<818bf108>] (dump_stack) from [<818a2460>] (panic+0x120/0x358 kernel/panic.c:348)
[<818a2340>] (panic) from [<8024390c>] (check_panic_on_warn kernel/panic.c:241 [inline])
[<818a2340>] (panic) from [<8024390c>] (print_tainted+0x0/0xa0 kernel/panic.c:236)
r3:8260c584 r2:00000001 r1:81fb773c r0:81fbf2e0
r7:8080a0d0

[<80243898>] (check_panic_on_warn) from [<80243b00>] (__warn+0x7c/0x180 kernel/panic.c:694)
[<80243a84>] (__warn) from [<80243dec>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:727)

r8:00000009 r7:8201b320 r6:df919a7c r5:82fd3c00 r4:00000000
[<80243c08>] (warn_slowpath_fmt) from [<8080a0d0>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:514)
r10:00000005 r9:84137000 r8:81a02b44 r7:82043274 r6:828be454 r5:df919b24
r4:8260ce18
[<8080a00c>] (debug_print_object) from [<8080b968>] (__debug_check_no_obj_freed lib/debugobjects.c:989 [inline])
[<8080a00c>] (debug_print_object) from [<8080b968>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1019)
r8:84137800 r7:841377ac r6:00000100 r5:00000003 r4:00000000
[<8080b714>] (debug_check_no_obj_freed) from [<804b2820>] (slab_free_hook mm/slub.c:2078 [inline])
[<8080b714>] (debug_check_no_obj_freed) from [<804b2820>] (slab_free mm/slub.c:4280 [inline])
[<8080b714>] (debug_check_no_obj_freed) from [<804b2820>] (kfree+0x1a0/0x334 mm/slub.c:4390)
r10:82775a28 r9:84534880 r8:84137000 r7:8045a920 r6:82c023c0 r5:dde8bac0
r4:84137000
[<804b2680>] (kfree) from [<8045a920>] (kvfree+0x2c/0x30 mm/util.c:680)
r10:82775a28 r9:84534880 r8:84137000 r7:00000000 r6:844b9480 r5:84652200
r4:84137000
[<8045a8f4>] (kvfree) from [<813dbb0c>] (netdev_freemem+0x1c/0x20 net/core/dev.c:10797)
r5:84652200 r4:84137000
[<813dbaf0>] (netdev_freemem) from [<81416b74>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031)
[<81416b48>] (netdev_release) from [<80a404e0>] (device_release+0x38/0xa8 drivers/base/core.c:2580)
r5:84652200 r4:841373b8
[<80a404a8>] (device_release) from [<8187b820>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80a404a8>] (device_release) from [<8187b820>] (kobject_release lib/kobject.c:720 [inline])
[<80a404a8>] (device_release) from [<8187b820>] (kref_put include/linux/kref.h:65 [inline])
[<80a404a8>] (device_release) from [<8187b820>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737)
r5:81b489c4 r4:841373b8
[<8187b758>] (kobject_put) from [<80a40768>] (put_device+0x18/0x1c drivers/base/core.c:3828)
r7:84536800 r6:8413710c r5:84137000 r4:00000000
[<80a40750>] (put_device) from [<813cce58>] (free_netdev+0x108/0x188 net/core/dev.c:10993)
[<813ccd50>] (free_netdev) from [<80d10be0>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636)
r6:84137774 r5:84137660 r4:00000000
[<80d10b34>] (usbnet_disconnect) from [<80d6bcc4>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461)
r8:00000044 r7:84536830 r6:82775a28 r5:00000000 r4:84536800
[<80d6bc40>] (usb_unbind_interface) from [<80a485bc>] (device_remove drivers/base/dd.c:568 [inline])
[<80d6bc40>] (usb_unbind_interface) from [<80a485bc>] (device_remove+0x64/0x6c drivers/base/dd.c:560)
r10:84534880 r9:828eed04 r8:00000044 r7:84536874 r6:82775a28 r5:00000000
r4:84536830
[<80a48558>] (device_remove) from [<80a49ad4>] (__device_release_driver drivers/base/dd.c:1270 [inline])
[<80a48558>] (device_remove) from [<80a49ad4>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293)
r5:00000000 r4:84536830
[<80a49948>] (device_release_driver_internal) from [<80a49b60>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316)
r9:828eed04 r8:82f51a40 r7:82f51a38 r6:82f51a0c r5:84536830 r4:82f51a30
[<80a49b48>] (device_release_driver) from [<80a47c60>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574)
[<80a47b94>] (bus_remove_device) from [<80a41ce4>] (device_del+0x15c/0x3bc drivers/base/core.c:3909)
r9:828eed04 r8:84536800 r7:82fd3c00 r6:843cc208 r5:04208060 r4:84536830
[<80a41b88>] (device_del) from [<80d69720>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418)
r10:00000000 r9:00000000 r8:84536800 r7:84534800 r6:843cc208 r5:00000001
r4:00000038
[<80d69644>] (usb_disable_device) from [<80d5e58c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2305)
r10:00000001 r9:8464e800 r8:845348c4 r7:83e1a400 r6:84534880 r5:84534800
r4:60000013
[<80d5e4a0>] (usb_disconnect) from [<80d6113c>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline])
[<80d5e4a0>] (usb_disconnect) from [<80d6113c>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline])
[<80d5e4a0>] (usb_disconnect) from [<80d6113c>] (port_event drivers/usb/core/hub.c:5821 [inline])
[<80d5e4a0>] (usb_disconnect) from [<80d6113c>] (hub_event+0xd78/0x194c drivers/usb/core/hub.c:5903)
r10:00000001 r9:00000101 r8:83c48b00 r7:84534800 r6:83e19c00 r5:83e1a610
r4:00000001
[<80d603c4>] (hub_event) from [<8026660c>] (process_one_work+0x1b8/0x508 kernel/workqueue.c:3254)
r10:82e65805 r9:82fd3c00 r8:00000080 r7:dddd00c0 r6:82e65800 r5:83c48b00
r4:82f57a80
[<80266454>] (process_one_work) from [<80267330>] (process_scheduled_works kernel/workqueue.c:3335 [inline])
[<80266454>] (process_one_work) from [<80267330>] (worker_thread+0x1ec/0x418 kernel/workqueue.c:3416)
r10:82fd3c00 r9:82f57aac r8:61c88647 r7:dddd00e0 r6:82604d40 r5:dddd00c0
r4:82f57a80
[<80267144>] (worker_thread) from [<80270044>] (kthread+0x104/0x134 kernel/kthread.c:388)
r10:00000000 r9:df839e90 r8:82f59740 r7:82f57a80 r6:80267144 r5:82fd3c00
r4:82f59540
[<8026ff40>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134)
Exception stack(0xdf919fb0 to 0xdf919ff8)
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 r5:8026ff40 r4:82f59540

Rebooting in 86400 seconds..


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