WARNING: ODEBUG bug in netdev_freemem

Status: auto-obsoleted due to no activity on 2022/08/27 05:00
Reported-by: syzbot+fd425fba4411ecc3ca61@syzkaller.appspotmail.com
First crash: 2673d, last: 2364d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING: ODEBUG bug in netdev_freemem -1 179 2363d 2660d 0/1 auto-closed as invalid on 2020/06/20 15:09
upstream WARNING: ODEBUG bug in netdev_freemem (3) usb net -1 syz, C 90 756d 871d 0/29 auto-obsoleted due to no activity on 2025/12/02 22:00
linux-5.15 WARNING: ODEBUG bug in netdev_freemem -1 syz 12 1157d 1229d 0/3 auto-obsoleted due to no activity on 2023/09/10 16:09
upstream WARNING: ODEBUG bug in netdev_freemem -1 syz done 1042 2615d 2780d 12/29 fixed on 2019/06/14 18:22
upstream WARNING: ODEBUG bug in netdev_freemem (2) batman -1 syz error error 1377 1150d 2605d 0/29 auto-obsoleted due to no activity on 2023/11/05 09:08
linux-6.1 WARNING: ODEBUG bug in netdev_freemem -1 1 1194d 1194d 0/3 auto-obsoleted due to no activity on 2023/08/23 09:09
▶ ▼ Last patch testing requests (3)
Created Duration User Patch Repo Result
2022/08/27 04:27 10m retest repro linux-4.19.y error
2022/08/27 00:27 10m retest repro linux-4.19.y error
2022/08/26 23:27 10m retest repro linux-4.19.y error

Sample crash report:
bond0 (unregistering): Releasing backup interface bond_slave_1
bond0 (unregistering): Releasing backup interface bond_slave_0
bond0 (unregistering): Released all slaves
------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x90 kernel/workqueue.c:4941
WARNING: CPU: 0 PID: 23 at lib/debugobjects.c:325 debug_print_object+0x168/0x250 lib/debugobjects.c:325
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 23 Comm: kworker/u4:1 Not tainted 4.19.91-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x53 kernel/panic.c:541
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037
RIP: 0010:debug_print_object+0x168/0x250 lib/debugobjects.c:325
Code: dd e0 63 ea 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd e0 63 ea 87 48 c7 c7 20 59 ea 87 e8 a6 46 dc fd <0f> 0b 83 05 ab 96 6a 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3
RSP: 0018:ffff8880a996f838 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8155bb16 RDI: ffffed101532def9
RBP: ffff8880a996f878 R08: ffff8880a995a600 R09: ffffed1015d03ee3
R10: ffffed1015d03ee2 R11: ffff8880ae81f717 R12: 0000000000000001
R13: ffffffff88fa43a0 R14: ffffffff815b30d0 R15: ffff888084763020
 __debug_check_no_obj_freed lib/debugobjects.c:785 [inline]
 debug_check_no_obj_freed+0x29f/0x464 lib/debugobjects.c:817
 kfree+0xbd/0x220 mm/slab.c:3821
 kvfree+0x61/0x70 mm/util.c:452
 netdev_freemem+0x4c/0x60 net/core/dev.c:8914
 netdev_release+0x86/0xb0 net/core/net-sysfs.c:1645
 device_release+0x7b/0x210 drivers/base/core.c:892
 kobject_cleanup lib/kobject.c:662 [inline]
 kobject_release lib/kobject.c:691 [inline]
 kref_put include/linux/kref.h:70 [inline]
 kobject_put.cold+0x289/0x2e6 lib/kobject.c:708
 netdev_run_todo+0x53b/0x7a0 net/core/dev.c:8819
 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:117
 default_device_exit_batch+0x358/0x410 net/core/dev.c:9602
 ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:156
 cleanup_net+0x404/0x960 net/core/net_namespace.c:553
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

======================================================

Crashes (243):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/12/27 15:10 linux-4.19.y 672481c2deff be5c2c81 .config console log report syz ci2-linux-4-19
2019/07/07 02:23 linux-4.19.y 1a0592436669 f62e1e85 .config console log report syz ci2-linux-4-19
2019/06/05 07:12 linux-4.19.y e109a984cf38 bfb4a51e .config console log report syz ci2-linux-4-19
2020/02/20 10:57 linux-4.19.y 4fccc2503536 b690a6e3 .config console log report ci2-linux-4-19
2020/02/19 20:54 linux-4.19.y 4fccc2503536 47fae6e9 .config console log report ci2-linux-4-19
2020/02/06 21:14 linux-4.19.y b499cf4b3a90 5be3a391 .config console log report ci2-linux-4-19
2020/02/04 17:28 linux-4.19.y 32ee7492f104 93e5e335 .config console log report ci2-linux-4-19
2020/01/31 19:08 linux-4.19.y 7cdefde351b6 0eb59c27 .config console log report ci2-linux-4-19
2020/01/31 12:34 linux-4.19.y 7cdefde351b6 5ed23f9a .config console log report ci2-linux-4-19
2020/01/29 02:29 linux-4.19.y 88d6de67e390 c8e81ce4 .config console log report ci2-linux-4-19
2020/01/27 21:08 linux-4.19.y 88d6de67e390 56cd6c9b .config console log report ci2-linux-4-19
2020/01/26 16:30 linux-4.19.y d183c8e2647a dd56146d .config console log report ci2-linux-4-19
2020/01/24 15:33 linux-4.19.y d183c8e2647a 2e95ab33 .config console log report ci2-linux-4-19
2020/01/22 10:03 linux-4.19.y dc4ba5be1bab 8eda0b95 .config console log report ci2-linux-4-19
2020/01/20 15:46 linux-4.19.y dc4ba5be1bab c40da18c .config console log report ci2-linux-4-19
2020/01/20 08:37 linux-4.19.y dc4ba5be1bab 0342f8c7 .config console log report ci2-linux-4-19
2020/01/19 05:11 linux-4.19.y dc4ba5be1bab bc8bc756 .config console log report ci2-linux-4-19
2020/01/18 18:47 linux-4.19.y dc4ba5be1bab 3de7aabb .config console log report ci2-linux-4-19
2020/01/15 17:43 linux-4.19.y db5b9190ff82 f9b69507 .config console log report ci2-linux-4-19
2020/01/15 15:45 linux-4.19.y db5b9190ff82 069a5a44 .config console log report ci2-linux-4-19
2020/01/15 11:36 linux-4.19.y db5b9190ff82 fa12bd3c .config console log report ci2-linux-4-19
2020/01/13 06:53 linux-4.19.y dcd888983542 53faa9fe .config console log report ci2-linux-4-19
2020/01/12 10:54 linux-4.19.y cb1f9a169a0e 31290a45 .config console log report ci2-linux-4-19
2020/01/09 03:02 linux-4.19.y 3d40d7117e35 ddc3e859 .config console log report ci2-linux-4-19
2020/01/08 18:38 linux-4.19.y 3d40d7117e35 ddc3e859 .config console log report ci2-linux-4-19
2020/01/05 22:19 linux-4.19.y 3d40d7117e35 d646e21f .config console log report ci2-linux-4-19
2020/01/01 11:34 linux-4.19.y c7ecf3e3a71c 25a0186e .config console log report ci2-linux-4-19
2020/01/01 03:31 linux-4.19.y c7ecf3e3a71c 25a0186e .config console log report ci2-linux-4-19
2019/12/31 22:22 linux-4.19.y c7ecf3e3a71c 25a0186e .config console log report ci2-linux-4-19
2019/12/31 16:08 linux-4.19.y c7ecf3e3a71c 7f117e28 .config console log report ci2-linux-4-19
2019/12/31 08:00 linux-4.19.y 672481c2deff 7f117e28 .config console log report ci2-linux-4-19
2019/12/28 15:58 linux-4.19.y 672481c2deff af6b8ef8 .config console log report ci2-linux-4-19
2019/12/28 08:01 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/28 06:20 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/27 14:20 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/27 01:14 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/26 17:43 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/26 06:42 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/26 03:59 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/25 16:26 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/25 09:33 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/25 03:30 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/22 23:53 linux-4.19.y 672481c2deff 8b967267 .config console log report ci2-linux-4-19
2019/12/22 19:49 linux-4.19.y 672481c2deff 8b967267 .config console log report ci2-linux-4-19
2019/12/22 11:27 linux-4.19.y 672481c2deff 8b967267 .config console log report ci2-linux-4-19
2019/12/21 22:17 linux-4.19.y 672481c2deff bc586918 .config console log report ci2-linux-4-19
2019/04/17 10:07 linux-4.19.y 4b0e041c9dad b0e8efcb .config console log report ci2-linux-4-19
* Struck through repros no longer work on HEAD.