[   25.456686] ==================================================================
[   25.457632] BUG: KASAN: double-free in kmem_cache_double_free+0x1e6/0x490
[   25.458712] Free of addr ffff88810240d000 by task kunit_try_catch/216
[   25.460115] 
[   25.460747] CPU: 1 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G    B            N 6.13.0-rc2-next-20241209 #1
[   25.461785] Tainted: [B]=BAD_PAGE, [N]=TEST
[   25.462164] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   25.462903] Call Trace:
[   25.463193]  <TASK>
[   25.463787]  dump_stack_lvl+0x73/0xb0
[   25.464159]  print_report+0xd1/0x640
[   25.464912]  ? __virt_addr_valid+0x1db/0x2d0
[   25.465326]  ? kmem_cache_double_free+0x1e6/0x490
[   25.465779]  ? kasan_complete_mode_report_info+0x64/0x200
[   25.467087]  ? kmem_cache_double_free+0x1e6/0x490
[   25.468143]  kasan_report_invalid_free+0xc0/0xf0
[   25.468812]  ? kmem_cache_double_free+0x1e6/0x490
[   25.469666]  ? kmem_cache_double_free+0x1e6/0x490
[   25.470541]  check_slab_allocation+0x101/0x130
[   25.471259]  __kasan_slab_pre_free+0x28/0x40
[   25.472134]  kmem_cache_free+0xee/0x420
[   25.472492]  ? kmem_cache_alloc_noprof+0x11e/0x3e0
[   25.473499]  ? kmem_cache_double_free+0x1e6/0x490
[   25.474018]  kmem_cache_double_free+0x1e6/0x490
[   25.474784]  ? __pfx_kmem_cache_double_free+0x10/0x10
[   25.475311]  ? finish_task_switch.isra.0+0x153/0x700
[   25.476061]  ? __switch_to+0x5d9/0xf60
[   25.476926]  ? __pfx_read_tsc+0x10/0x10
[   25.477327]  ? ktime_get_ts64+0x86/0x230
[   25.478572]  kunit_try_run_case+0x1b3/0x490
[   25.479475]  ? __pfx_kunit_try_run_case+0x10/0x10
[   25.480429]  ? _raw_spin_lock_irqsave+0xa2/0x110
[   25.480763]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   25.482289]  ? __kthread_parkme+0x82/0x160
[   25.482767]  ? preempt_count_sub+0x50/0x80
[   25.483228]  ? __pfx_kunit_try_run_case+0x10/0x10
[   25.483548]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   25.484752]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.485174]  kthread+0x257/0x310
[   25.486375]  ? __pfx_kthread+0x10/0x10
[   25.486879]  ret_from_fork+0x41/0x80
[   25.487246]  ? __pfx_kthread+0x10/0x10
[   25.488134]  ret_from_fork_asm+0x1a/0x30
[   25.488956]  </TASK>
[   25.489586] 
[   25.489767] Allocated by task 216:
[   25.490743]  kasan_save_stack+0x3d/0x60
[   25.491168]  kasan_save_track+0x18/0x40
[   25.491837]  kasan_save_alloc_info+0x3b/0x50
[   25.492349]  __kasan_slab_alloc+0x91/0xa0
[   25.492727]  kmem_cache_alloc_noprof+0x11e/0x3e0
[   25.493795]  kmem_cache_double_free+0x150/0x490
[   25.494096]  kunit_try_run_case+0x1b3/0x490
[   25.494892]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.495451]  kthread+0x257/0x310
[   25.495792]  ret_from_fork+0x41/0x80
[   25.496765]  ret_from_fork_asm+0x1a/0x30
[   25.497251] 
[   25.498065] Freed by task 216:
[   25.498358]  kasan_save_stack+0x3d/0x60
[   25.499517]  kasan_save_track+0x18/0x40
[   25.500136]  kasan_save_free_info+0x3f/0x60
[   25.501013]  __kasan_slab_free+0x56/0x70
[   25.501480]  kmem_cache_free+0x120/0x420
[   25.502487]  kmem_cache_double_free+0x16b/0x490
[   25.502733]  kunit_try_run_case+0x1b3/0x490
[   25.502936]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.503163]  kthread+0x257/0x310
[   25.503357]  ret_from_fork+0x41/0x80
[   25.504515]  ret_from_fork_asm+0x1a/0x30
[   25.505492] 
[   25.506162] The buggy address belongs to the object at ffff88810240d000
[   25.506162]  which belongs to the cache test_cache of size 200
[   25.507648] The buggy address is located 0 bytes inside of
[   25.507648]  200-byte region [ffff88810240d000, ffff88810240d0c8)
[   25.509137] 
[   25.509247] The buggy address belongs to the physical page:
[   25.509560] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10240d
[   25.510037] flags: 0x200000000000000(node=0|zone=2)
[   25.512084] page_type: f5(slab)
[   25.513400] raw: 0200000000000000 ffff888101012a00 dead000000000122 0000000000000000
[   25.514814] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000
[   25.515666] page dumped because: kasan: bad access detected
[   25.516235] 
[   25.516860] Memory state around the buggy address:
[   25.517897]  ffff88810240cf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.519129]  ffff88810240cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.520894] >ffff88810240d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.522403]                    ^
[   25.522833]  ffff88810240d080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
[   25.523456]  ffff88810240d100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.524611] ==================================================================