[moderation] [net?] [usb?] WARNING: ODEBUG bug in get_taint
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syzbot
Jul 26, 2024, 10:19:29 AM (yesterday) Jul 26
to syzkaller-upst...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: e9680017b2dc Merge tag 'sh-for-v6.11-tag1' of git://git.ke..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10539af1980000
kernel config: https://syzkaller.appspot.com/x/.config?x=7d061845120ab13c
dashboard link: https://syzkaller.appspot.com/bug?extid=27433495fc0c4331e0b5
compiler: arm-linux-gnueabi-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm
CC: [da...@davemloft.net edum...@google.com ku...@kernel.org linux-...@vger.kernel.org linu...@vger.kernel.org net...@vger.kernel.org one...@suse.com pab...@redhat.com]
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-e9680017.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/688a8795e7ed/vmlinux-e9680017.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9c190d12b0cc/zImage-e9680017.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+274334...@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 4
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: 4621 at lib/debugobjects.c:515 debug_print_object+0xc4/0xd8 lib/debugobjects.c:515
ODEBUG: free active (active state 0) object: 84a347cc 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 UID: 0 PID: 4621 Comm: kworker/0:19 Not tainted 6.10.0-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: usb_hub_wq hub_event
Call trace:
[<818ef00c>] (dump_backtrace) from [<818ef108>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
r7:00000000 r6:82622804 r5:00000000 r4:81feb164
[<818ef0f0>] (show_stack) from [<8190c7bc>] (__dump_stack lib/dump_stack.c:93 [inline])
[<818ef0f0>] (show_stack) from [<8190c7bc>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119)
[<8190c768>] (dump_stack_lvl) from [<8190c7fc>] (dump_stack+0x18/0x1c lib/dump_stack.c:128)
r5:00000000 r4:82863d0c
[<8190c7e4>] (dump_stack) from [<818efbb0>] (panic+0x120/0x358 kernel/panic.c:348)
[<818efa90>] (panic) from [<80241f4c>] (check_panic_on_warn kernel/panic.c:241 [inline])
[<818efa90>] (panic) from [<80241f4c>] (get_taint+0x0/0x1c kernel/panic.c:236)
r3:8260c5c4 r2:00000001 r1:81fd3d8c r0:81fdb7a0
r7:8082678c
[<80241ed8>] (check_panic_on_warn) from [<802420a0>] (__warn+0x7c/0x180 kernel/panic.c:735)
[<80242024>] (__warn) from [<8024238c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:768)
r8:00000009 r7:8203b214 r6:dfe7da8c r5:848dd400 r4:00000000
[<802421a8>] (warn_slowpath_fmt) from [<8082678c>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:515)
r10:00000005 r9:84a34000 r8:81a01bc0 r7:82064cc4 r6:828c769c r5:dfe7db34
r4:8260cda4
[<808266c8>] (debug_print_object) from [<8082802c>] (__debug_check_no_obj_freed lib/debugobjects.c:990 [inline])
[<808266c8>] (debug_print_object) from [<8082802c>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1020)
r8:84a34800 r7:84a347cc r6:00000100 r5:00000003 r4:00000000
[<80827dd8>] (debug_check_no_obj_freed) from [<804bc654>] (slab_free_hook mm/slub.c:2219 [inline])
[<80827dd8>] (debug_check_no_obj_freed) from [<804bc654>] (slab_free mm/slub.c:4473 [inline])
[<80827dd8>] (debug_check_no_obj_freed) from [<804bc654>] (kfree+0x198/0x338 mm/slub.c:4594)
r10:82777cb8 r9:846f6880 r8:84a34000 r7:80461650 r6:82c023c0 r5:dde9fec0
r4:84a34000
[<804bc4bc>] (kfree) from [<80461650>] (kvfree+0x2c/0x30 mm/util.c:696)
r10:82777cb8 r9:846f6880 r8:84a34000 r7:00000000 r6:85045d40 r5:84b0d100
r4:84a34000
[<80461624>] (kvfree) from [<814585b4>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031)
r5:84b0d100 r4:84a34000
[<81458588>] (netdev_release) from [<80a63df4>] (device_release+0x38/0xa8 drivers/base/core.c:2581)
r5:84b0d100 r4:84a343c0
[<80a63dbc>] (device_release) from [<818c8e90>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80a63dbc>] (device_release) from [<818c8e90>] (kobject_release lib/kobject.c:720 [inline])
[<80a63dbc>] (device_release) from [<818c8e90>] (kref_put include/linux/kref.h:65 [inline])
[<80a63dbc>] (device_release) from [<818c8e90>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737)
r5:81b49224 r4:84a343c0
[<818c8dc8>] (kobject_put) from [<80a64020>] (put_device+0x18/0x1c drivers/base/core.c:3787)
r7:846f6c00 r6:84a3410c r5:84a34000 r4:00000000
[<80a64008>] (put_device) from [<8140d59c>] (free_netdev+0x114/0x18c net/core/dev.c:11196)
[<8140d488>] (free_netdev) from [<80d3ac20>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636)
r6:84a34794 r5:84a34680 r4:00000000
[<80d3ab74>] (usbnet_disconnect) from [<80d9f3c0>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461)
r8:00000044 r7:846f6c30 r6:82777cb8 r5:00000000 r4:846f6c00
[<80d9f33c>] (usb_unbind_interface) from [<80a6befc>] (device_remove drivers/base/dd.c:568 [inline])
[<80d9f33c>] (usb_unbind_interface) from [<80a6befc>] (device_remove+0x64/0x6c drivers/base/dd.c:560)
r10:00000000 r9:846f6880 r8:00000044 r7:846f6c74 r6:82777cb8 r5:00000000
r4:846f6c30
[<80a6be98>] (device_remove) from [<80a6d414>] (__device_release_driver drivers/base/dd.c:1270 [inline])
[<80a6be98>] (device_remove) from [<80a6d414>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293)
r5:00000000 r4:846f6c30
[<80a6d288>] (device_release_driver_internal) from [<80a6d4a0>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316)
r9:846f6880 r8:82fb5140 r7:82fb5138 r6:82fb510c r5:846f6c30 r4:82fb5130
[<80a6d488>] (device_release_driver) from [<80a6b584>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574)
[<80a6b4b8>] (bus_remove_device) from [<80a6569c>] (device_del+0x148/0x38c drivers/base/core.c:3868)
r9:846f6880 r8:848dd400 r7:04208060 r6:00000000 r5:846f6c30 r4:846f6c74
[<80a65554>] (device_del) from [<80d9cddc>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418)
r10:00000000 r9:00000000 r8:846f6c00 r7:846f6800 r6:85045888 r5:00000001
r4:00000038
[<80d9cd00>] (usb_disable_device) from [<80d91c3c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304)
r10:00000001 r9:846da200 r8:846f68c4 r7:83dabc00 r6:846f6880 r5:846f6800
r4:60000013
[<80d91b50>] (usb_disconnect) from [<80d948ec>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline])
[<80d91b50>] (usb_disconnect) from [<80d948ec>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline])
[<80d91b50>] (usb_disconnect) from [<80d948ec>] (port_event drivers/usb/core/hub.c:5821 [inline])
[<80d91b50>] (usb_disconnect) from [<80d948ec>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903)
r10:00000001 r9:00000100 r8:83826100 r7:846f6800 r6:83dab400 r5:83dabe10
r4:00000001
[<80d93a74>] (hub_event) from [<8026594c>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231)
r10:82ea6a05 r9:848dd400 r8:00800000 r7:dddd0000 r6:82ea6a00 r5:83826100
r4:84924b80
[<80265798>] (process_one_work) from [<80266530>] (process_scheduled_works kernel/workqueue.c:3312 [inline])
[<80265798>] (process_one_work) from [<80266530>] (worker_thread+0x1ec/0x3f4 kernel/workqueue.c:3390)
r10:848dd400 r9:84924bac r8:61c88647 r7:dddd0020 r6:82604d40 r5:dddd0000
r4:84924b80
[<80266344>] (worker_thread) from [<8026f588>] (kthread+0x104/0x134 kernel/kthread.c:389)
r10:00000000 r9:dfe3de78 r8:84926380 r7:84924b80 r6:80266344 r5:848dd400
r4:849262c0
[<8026f484>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:134)
Exception stack(0xdfe7dfb0 to 0xdfe7dff8)
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 r5:8026f484 r4:849262c0
Rebooting in 86400 seconds..
---
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:
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 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
syzbot found the following issue on:
HEAD commit: e9680017b2dc Merge tag 'sh-for-v6.11-tag1' of git://git.ke..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10539af1980000
kernel config: https://syzkaller.appspot.com/x/.config?x=7d061845120ab13c
dashboard link: https://syzkaller.appspot.com/bug?extid=27433495fc0c4331e0b5
compiler: arm-linux-gnueabi-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm
CC: [da...@davemloft.net edum...@google.com ku...@kernel.org linux-...@vger.kernel.org linu...@vger.kernel.org net...@vger.kernel.org one...@suse.com pab...@redhat.com]
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-e9680017.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/688a8795e7ed/vmlinux-e9680017.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9c190d12b0cc/zImage-e9680017.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+274334...@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 4
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: 4621 at lib/debugobjects.c:515 debug_print_object+0xc4/0xd8 lib/debugobjects.c:515
ODEBUG: free active (active state 0) object: 84a347cc 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 UID: 0 PID: 4621 Comm: kworker/0:19 Not tainted 6.10.0-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: usb_hub_wq hub_event
Call trace:
[<818ef00c>] (dump_backtrace) from [<818ef108>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
r7:00000000 r6:82622804 r5:00000000 r4:81feb164
[<818ef0f0>] (show_stack) from [<8190c7bc>] (__dump_stack lib/dump_stack.c:93 [inline])
[<818ef0f0>] (show_stack) from [<8190c7bc>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119)
[<8190c768>] (dump_stack_lvl) from [<8190c7fc>] (dump_stack+0x18/0x1c lib/dump_stack.c:128)
r5:00000000 r4:82863d0c
[<8190c7e4>] (dump_stack) from [<818efbb0>] (panic+0x120/0x358 kernel/panic.c:348)
[<818efa90>] (panic) from [<80241f4c>] (check_panic_on_warn kernel/panic.c:241 [inline])
[<818efa90>] (panic) from [<80241f4c>] (get_taint+0x0/0x1c kernel/panic.c:236)
r3:8260c5c4 r2:00000001 r1:81fd3d8c r0:81fdb7a0
r7:8082678c
[<80241ed8>] (check_panic_on_warn) from [<802420a0>] (__warn+0x7c/0x180 kernel/panic.c:735)
[<80242024>] (__warn) from [<8024238c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:768)
r8:00000009 r7:8203b214 r6:dfe7da8c r5:848dd400 r4:00000000
[<802421a8>] (warn_slowpath_fmt) from [<8082678c>] (debug_print_object+0xc4/0xd8 lib/debugobjects.c:515)
r10:00000005 r9:84a34000 r8:81a01bc0 r7:82064cc4 r6:828c769c r5:dfe7db34
r4:8260cda4
[<808266c8>] (debug_print_object) from [<8082802c>] (__debug_check_no_obj_freed lib/debugobjects.c:990 [inline])
[<808266c8>] (debug_print_object) from [<8082802c>] (debug_check_no_obj_freed+0x254/0x2a0 lib/debugobjects.c:1020)
r8:84a34800 r7:84a347cc r6:00000100 r5:00000003 r4:00000000
[<80827dd8>] (debug_check_no_obj_freed) from [<804bc654>] (slab_free_hook mm/slub.c:2219 [inline])
[<80827dd8>] (debug_check_no_obj_freed) from [<804bc654>] (slab_free mm/slub.c:4473 [inline])
[<80827dd8>] (debug_check_no_obj_freed) from [<804bc654>] (kfree+0x198/0x338 mm/slub.c:4594)
r10:82777cb8 r9:846f6880 r8:84a34000 r7:80461650 r6:82c023c0 r5:dde9fec0
r4:84a34000
[<804bc4bc>] (kfree) from [<80461650>] (kvfree+0x2c/0x30 mm/util.c:696)
r10:82777cb8 r9:846f6880 r8:84a34000 r7:00000000 r6:85045d40 r5:84b0d100
r4:84a34000
[<80461624>] (kvfree) from [<814585b4>] (netdev_release+0x2c/0x34 net/core/net-sysfs.c:2031)
r5:84b0d100 r4:84a34000
[<81458588>] (netdev_release) from [<80a63df4>] (device_release+0x38/0xa8 drivers/base/core.c:2581)
r5:84b0d100 r4:84a343c0
[<80a63dbc>] (device_release) from [<818c8e90>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80a63dbc>] (device_release) from [<818c8e90>] (kobject_release lib/kobject.c:720 [inline])
[<80a63dbc>] (device_release) from [<818c8e90>] (kref_put include/linux/kref.h:65 [inline])
[<80a63dbc>] (device_release) from [<818c8e90>] (kobject_put+0xc8/0x1f8 lib/kobject.c:737)
r5:81b49224 r4:84a343c0
[<818c8dc8>] (kobject_put) from [<80a64020>] (put_device+0x18/0x1c drivers/base/core.c:3787)
r7:846f6c00 r6:84a3410c r5:84a34000 r4:00000000
[<80a64008>] (put_device) from [<8140d59c>] (free_netdev+0x114/0x18c net/core/dev.c:11196)
[<8140d488>] (free_netdev) from [<80d3ac20>] (usbnet_disconnect+0xac/0xf0 drivers/net/usb/usbnet.c:1636)
r6:84a34794 r5:84a34680 r4:00000000
[<80d3ab74>] (usbnet_disconnect) from [<80d9f3c0>] (usb_unbind_interface+0x84/0x2c4 drivers/usb/core/driver.c:461)
r8:00000044 r7:846f6c30 r6:82777cb8 r5:00000000 r4:846f6c00
[<80d9f33c>] (usb_unbind_interface) from [<80a6befc>] (device_remove drivers/base/dd.c:568 [inline])
[<80d9f33c>] (usb_unbind_interface) from [<80a6befc>] (device_remove+0x64/0x6c drivers/base/dd.c:560)
r10:00000000 r9:846f6880 r8:00000044 r7:846f6c74 r6:82777cb8 r5:00000000
r4:846f6c30
[<80a6be98>] (device_remove) from [<80a6d414>] (__device_release_driver drivers/base/dd.c:1270 [inline])
[<80a6be98>] (device_remove) from [<80a6d414>] (device_release_driver_internal+0x18c/0x200 drivers/base/dd.c:1293)
r5:00000000 r4:846f6c30
[<80a6d288>] (device_release_driver_internal) from [<80a6d4a0>] (device_release_driver+0x18/0x1c drivers/base/dd.c:1316)
r9:846f6880 r8:82fb5140 r7:82fb5138 r6:82fb510c r5:846f6c30 r4:82fb5130
[<80a6d488>] (device_release_driver) from [<80a6b584>] (bus_remove_device+0xcc/0x120 drivers/base/bus.c:574)
[<80a6b4b8>] (bus_remove_device) from [<80a6569c>] (device_del+0x148/0x38c drivers/base/core.c:3868)
r9:846f6880 r8:848dd400 r7:04208060 r6:00000000 r5:846f6c30 r4:846f6c74
[<80a65554>] (device_del) from [<80d9cddc>] (usb_disable_device+0xdc/0x1f0 drivers/usb/core/message.c:1418)
r10:00000000 r9:00000000 r8:846f6c00 r7:846f6800 r6:85045888 r5:00000001
r4:00000038
[<80d9cd00>] (usb_disable_device) from [<80d91c3c>] (usb_disconnect+0xec/0x29c drivers/usb/core/hub.c:2304)
r10:00000001 r9:846da200 r8:846f68c4 r7:83dabc00 r6:846f6880 r5:846f6800
r4:60000013
[<80d91b50>] (usb_disconnect) from [<80d948ec>] (hub_port_connect drivers/usb/core/hub.c:5361 [inline])
[<80d91b50>] (usb_disconnect) from [<80d948ec>] (hub_port_connect_change drivers/usb/core/hub.c:5661 [inline])
[<80d91b50>] (usb_disconnect) from [<80d948ec>] (port_event drivers/usb/core/hub.c:5821 [inline])
[<80d91b50>] (usb_disconnect) from [<80d948ec>] (hub_event+0xe78/0x194c drivers/usb/core/hub.c:5903)
r10:00000001 r9:00000100 r8:83826100 r7:846f6800 r6:83dab400 r5:83dabe10
r4:00000001
[<80d93a74>] (hub_event) from [<8026594c>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231)
r10:82ea6a05 r9:848dd400 r8:00800000 r7:dddd0000 r6:82ea6a00 r5:83826100
r4:84924b80
[<80265798>] (process_one_work) from [<80266530>] (process_scheduled_works kernel/workqueue.c:3312 [inline])
[<80265798>] (process_one_work) from [<80266530>] (worker_thread+0x1ec/0x3f4 kernel/workqueue.c:3390)
r10:848dd400 r9:84924bac r8:61c88647 r7:dddd0020 r6:82604d40 r5:dddd0000
r4:84924b80
[<80266344>] (worker_thread) from [<8026f588>] (kthread+0x104/0x134 kernel/kthread.c:389)
r10:00000000 r9:dfe3de78 r8:84926380 r7:84924b80 r6:80266344 r5:848dd400
r4:849262c0
[<8026f484>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:134)
Exception stack(0xdfe7dfb0 to 0xdfe7dff8)
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 r5:8026f484 r4:849262c0
Rebooting in 86400 seconds..
---
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:
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 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
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