[   33.711297] ==================================================================
[   33.711476] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8
[   33.711602] Free of addr ffff000801ee6000 by task kunit_try_catch/254
[   33.713008] 
[   33.714496] CPU: 6 UID: 0 PID: 254 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc6-next-20250515 #1 PREEMPT 
[   33.714555] Tainted: [B]=BAD_PAGE, [N]=TEST
[   33.714572] Hardware name: WinLink E850-96 board (DT)
[   33.714594] Call trace:
[   33.714606]  show_stack+0x20/0x38 (C)
[   33.714644]  dump_stack_lvl+0x8c/0xd0
[   33.714677]  print_report+0x118/0x608
[   33.714713]  kasan_report_invalid_free+0xc0/0xe8
[   33.714746]  check_slab_allocation+0xd4/0x108
[   33.714783]  __kasan_slab_pre_free+0x2c/0x48
[   33.714813]  kmem_cache_free+0xf0/0x470
[   33.714846]  kmem_cache_double_free+0x190/0x3c8
[   33.714875]  kunit_try_run_case+0x170/0x3f0
[   33.714910]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   33.714946]  kthread+0x328/0x630
[   33.714980]  ret_from_fork+0x10/0x20
[   33.715015] 
[   33.787572] Allocated by task 254:
[   33.790960]  kasan_save_stack+0x3c/0x68
[   33.794776]  kasan_save_track+0x20/0x40
[   33.798597]  kasan_save_alloc_info+0x40/0x58
[   33.802849]  __kasan_slab_alloc+0xa8/0xb0
[   33.806842]  kmem_cache_alloc_noprof+0x10c/0x3a0
[   33.811443]  kmem_cache_double_free+0x12c/0x3c8
[   33.815957]  kunit_try_run_case+0x170/0x3f0
[   33.820123]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   33.825592]  kthread+0x328/0x630
[   33.828803]  ret_from_fork+0x10/0x20
[   33.832362] 
[   33.833839] Freed by task 254:
[   33.836877]  kasan_save_stack+0x3c/0x68
[   33.840696]  kasan_save_track+0x20/0x40
[   33.844515]  kasan_save_free_info+0x4c/0x78
[   33.848681]  __kasan_slab_free+0x6c/0x98
[   33.852589]  kmem_cache_free+0x260/0x470
[   33.856494]  kmem_cache_double_free+0x140/0x3c8
[   33.861008]  kunit_try_run_case+0x170/0x3f0
[   33.865175]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   33.870643]  kthread+0x328/0x630
[   33.873855]  ret_from_fork+0x10/0x20
[   33.877414] 
[   33.878891] The buggy address belongs to the object at ffff000801ee6000
[   33.878891]  which belongs to the cache test_cache of size 200
[   33.891304] The buggy address is located 0 bytes inside of
[   33.891304]  200-byte region [ffff000801ee6000, ffff000801ee60c8)
[   33.902847] 
[   33.904327] The buggy address belongs to the physical page:
[   33.909883] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x881ee6
[   33.917868] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   33.925507] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff)
[   33.932449] page_type: f5(slab)
[   33.935587] raw: 0bfffe0000000040 ffff000801ee4000 dead000000000122 0000000000000000
[   33.943305] raw: 0000000000000000 00000000801f001f 00000000f5000000 0000000000000000
[   33.951032] head: 0bfffe0000000040 ffff000801ee4000 dead000000000122 0000000000000000
[   33.958843] head: 0000000000000000 00000000801f001f 00000000f5000000 0000000000000000
[   33.966656] head: 0bfffe0000000001 fffffdffe007b981 00000000ffffffff 00000000ffffffff
[   33.974467] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002
[   33.982273] page dumped because: kasan: bad access detected
[   33.987828] 
[   33.989304] Memory state around the buggy address:
[   33.994086]  ffff000801ee5f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   34.001287]  ffff000801ee5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   34.008494] >ffff000801ee6000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   34.015693]                    ^
[   34.018908]  ffff000801ee6080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
[   34.026113]  ffff000801ee6100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   34.033316] ==================================================================