[   17.858127] ==================================================================
[   17.858218] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438
[   17.858292] Read of size 16 at addr fff00000c5915940 by task kunit_try_catch/171
[   17.858343] 
[   17.859650] CPU: 1 UID: 0 PID: 171 Comm: kunit_try_catch Tainted: G    B            N  6.15.1-rc1 #1 PREEMPT 
[   17.859740] Tainted: [B]=BAD_PAGE, [N]=TEST
[   17.861466] Hardware name: linux,dummy-virt (DT)
[   17.861540] Call trace:
[   17.861565]  show_stack+0x20/0x38 (C)
[   17.862836]  dump_stack_lvl+0x8c/0xd0
[   17.862935]  print_report+0x118/0x608
[   17.862988]  kasan_report+0xdc/0x128
[   17.863042]  __asan_report_load16_noabort+0x20/0x30
[   17.863125]  kmalloc_uaf_16+0x3bc/0x438
[   17.864483]  kunit_try_run_case+0x170/0x3f0
[   17.865970]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   17.866726]  kthread+0x328/0x630
[   17.866792]  ret_from_fork+0x10/0x20
[   17.866846] 
[   17.866865] Allocated by task 171:
[   17.866895]  kasan_save_stack+0x3c/0x68
[   17.868442]  kasan_save_track+0x20/0x40
[   17.869456]  kasan_save_alloc_info+0x40/0x58
[   17.869739]  __kasan_kmalloc+0xd4/0xd8
[   17.869782]  __kmalloc_cache_noprof+0x16c/0x3c0
[   17.869825]  kmalloc_uaf_16+0x140/0x438
[   17.869863]  kunit_try_run_case+0x170/0x3f0
[   17.869904]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   17.869950]  kthread+0x328/0x630
[   17.869988]  ret_from_fork+0x10/0x20
[   17.870024] 
[   17.870043] Freed by task 171:
[   17.870071]  kasan_save_stack+0x3c/0x68
[   17.870107]  kasan_save_track+0x20/0x40
[   17.872434]  kasan_save_free_info+0x4c/0x78
[   17.872511]  __kasan_slab_free+0x6c/0x98
[   17.872549]  kfree+0x214/0x3c8
[   17.872585]  kmalloc_uaf_16+0x190/0x438
[   17.872623]  kunit_try_run_case+0x170/0x3f0
[   17.872677]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   17.872865]  kthread+0x328/0x630
[   17.872902]  ret_from_fork+0x10/0x20
[   17.872939] 
[   17.872961] The buggy address belongs to the object at fff00000c5915940
[   17.872961]  which belongs to the cache kmalloc-16 of size 16
[   17.873075] The buggy address is located 0 bytes inside of
[   17.873075]  freed 16-byte region [fff00000c5915940, fff00000c5915950)
[   17.873489] 
[   17.873515] The buggy address belongs to the physical page:
[   17.873548] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105915
[   17.873607] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   17.873660] page_type: f5(slab)
[   17.873704] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000
[   17.873754] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   17.873793] page dumped because: kasan: bad access detected
[   17.873825] 
[   17.873843] Memory state around the buggy address:
[   17.873877]  fff00000c5915800: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   17.873919]  fff00000c5915880: fa fb fc fc 00 04 fc fc fa fb fc fc fa fb fc fc
[   17.873961] >fff00000c5915900: fa fb fc fc 00 00 fc fc fa fb fc fc fc fc fc fc
[   17.873998]                                            ^
[   17.874032]  fff00000c5915980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   17.874072]  fff00000c5915a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   17.874108] ==================================================================

[   16.527893] ==================================================================
[   16.529066] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0
[   16.529716] Read of size 16 at addr ffff888102327aa0 by task kunit_try_catch/189
[   16.530775] 
[   16.530978] CPU: 0 UID: 0 PID: 189 Comm: kunit_try_catch Tainted: G    B            N  6.15.1-rc1 #1 PREEMPT(voluntary) 
[   16.531095] Tainted: [B]=BAD_PAGE, [N]=TEST
[   16.531161] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   16.531222] Call Trace:
[   16.531256]  <TASK>
[   16.531302]  dump_stack_lvl+0x73/0xb0
[   16.531392]  print_report+0xd1/0x650
[   16.531438]  ? __virt_addr_valid+0x1db/0x2d0
[   16.531479]  ? kmalloc_uaf_16+0x47b/0x4c0
[   16.531503]  ? kasan_complete_mode_report_info+0x64/0x200
[   16.531529]  ? kmalloc_uaf_16+0x47b/0x4c0
[   16.531553]  kasan_report+0x141/0x180
[   16.531579]  ? kmalloc_uaf_16+0x47b/0x4c0
[   16.531608]  __asan_report_load16_noabort+0x18/0x20
[   16.531645]  kmalloc_uaf_16+0x47b/0x4c0
[   16.531672]  ? __pfx_kmalloc_uaf_16+0x10/0x10
[   16.531697]  ? __schedule+0x10cc/0x2b30
[   16.531723]  ? __pfx_read_tsc+0x10/0x10
[   16.531759]  ? ktime_get_ts64+0x86/0x230
[   16.531798]  kunit_try_run_case+0x1a5/0x480
[   16.531830]  ? __pfx_kunit_try_run_case+0x10/0x10
[   16.531855]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   16.531882]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   16.531907]  ? __kthread_parkme+0x82/0x180
[   16.531933]  ? preempt_count_sub+0x50/0x80
[   16.531963]  ? __pfx_kunit_try_run_case+0x10/0x10
[   16.531989]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   16.532014]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   16.532039]  kthread+0x337/0x6f0
[   16.532058]  ? trace_preempt_on+0x20/0xc0
[   16.532086]  ? __pfx_kthread+0x10/0x10
[   16.532155]  ? _raw_spin_unlock_irq+0x47/0x80
[   16.532183]  ? calculate_sigpending+0x7b/0xa0
[   16.532209]  ? __pfx_kthread+0x10/0x10
[   16.532230]  ret_from_fork+0x41/0x80
[   16.532254]  ? __pfx_kthread+0x10/0x10
[   16.532273]  ret_from_fork_asm+0x1a/0x30
[   16.532309]  </TASK>
[   16.532324] 
[   16.543688] Allocated by task 189:
[   16.544034]  kasan_save_stack+0x45/0x70
[   16.544439]  kasan_save_track+0x18/0x40
[   16.544770]  kasan_save_alloc_info+0x3b/0x50
[   16.545138]  __kasan_kmalloc+0xb7/0xc0
[   16.545457]  __kmalloc_cache_noprof+0x189/0x420
[   16.545794]  kmalloc_uaf_16+0x15b/0x4c0
[   16.546003]  kunit_try_run_case+0x1a5/0x480
[   16.546355]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   16.546848]  kthread+0x337/0x6f0
[   16.547066]  ret_from_fork+0x41/0x80
[   16.547461]  ret_from_fork_asm+0x1a/0x30
[   16.547696] 
[   16.547901] Freed by task 189:
[   16.548210]  kasan_save_stack+0x45/0x70
[   16.548477]  kasan_save_track+0x18/0x40
[   16.548684]  kasan_save_free_info+0x3f/0x60
[   16.549069]  __kasan_slab_free+0x56/0x70
[   16.549483]  kfree+0x222/0x3f0
[   16.549711]  kmalloc_uaf_16+0x1d6/0x4c0
[   16.550042]  kunit_try_run_case+0x1a5/0x480
[   16.550471]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   16.550865]  kthread+0x337/0x6f0
[   16.551207]  ret_from_fork+0x41/0x80
[   16.551450]  ret_from_fork_asm+0x1a/0x30
[   16.551770] 
[   16.551973] The buggy address belongs to the object at ffff888102327aa0
[   16.551973]  which belongs to the cache kmalloc-16 of size 16
[   16.552599] The buggy address is located 0 bytes inside of
[   16.552599]  freed 16-byte region [ffff888102327aa0, ffff888102327ab0)
[   16.553296] 
[   16.553492] The buggy address belongs to the physical page:
[   16.553970] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102327
[   16.554506] flags: 0x200000000000000(node=0|zone=2)
[   16.554868] page_type: f5(slab)
[   16.555233] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   16.555720] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   16.556208] page dumped because: kasan: bad access detected
[   16.556561] 
[   16.556784] Memory state around the buggy address:
[   16.557058]  ffff888102327980: 00 05 fc fc 00 02 fc fc 00 02 fc fc 00 02 fc fc
[   16.557494]  ffff888102327a00: 00 02 fc fc fa fb fc fc fa fb fc fc 00 04 fc fc
[   16.557796] >ffff888102327a80: 00 00 fc fc fa fb fc fc fc fc fc fc fc fc fc fc
[   16.558075]                                ^
[   16.558489]  ffff888102327b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   16.559051]  ffff888102327b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   16.559655] ==================================================================