syzbot

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ODEBUG: free active (active state 0) object type: work_struct hint: tcindex_destroy_rexts_work+0x0/0x30 net/sched/cls_tcindex.c:143
WARNING: CPU: 0 PID: 21 at lib/debugobjects.c:481 debug_print_object+0x168/0x250 lib/debugobjects.c:481
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 5.4.0-rc4+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: tc_filter_workqueue tcindex_destroy_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:debug_print_object+0x168/0x250 lib/debugobjects.c:481
Code: dd 60 f8 e6 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 60 f8 e6 87 48 c7 c7 c0 ed e6 87 e8 a0 34 fd fd <0f> 0b 83 05 23 83 7f 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3
RSP: 0018:ffff8880a9a1fc18 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815cb646 RDI: ffffed1015343f75
RBP: ffff8880a9a1fc58 R08: ffff8880a9a0c580 R09: ffffed1015d04101
R10: ffffed1015d04100 R11: ffff8880ae820807 R12: 0000000000000001
R13: ffffffff88f7af80 R14: ffffffff814af950 R15: ffff88808dd8bea8
 __debug_check_no_obj_freed lib/debugobjects.c:963 [inline]
 debug_check_no_obj_freed+0x2d4/0x43f lib/debugobjects.c:994
 kfree+0xf8/0x2c0 mm/slab.c:3755
 tcindex_destroy_work+0x33/0x80 net/sched/cls_tcindex.c:231
 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..