[   18.018002] ==================================================================
[   18.019193] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0
[   18.020063] Read of size 16 at addr ffff8881021e3ec0 by task kunit_try_catch/188
[   18.020868] 
[   18.021142] CPU: 1 UID: 0 PID: 188 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc3 #1 PREEMPT(voluntary) 
[   18.021309] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.021349] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   18.021403] Call Trace:
[   18.021445]  <TASK>
[   18.021522]  dump_stack_lvl+0x73/0xb0
[   18.022007]  print_report+0xd1/0x650
[   18.022045]  ? __virt_addr_valid+0x1db/0x2d0
[   18.022076]  ? kmalloc_uaf_16+0x47b/0x4c0
[   18.022105]  ? kasan_complete_mode_report_info+0x64/0x200
[   18.022136]  ? kmalloc_uaf_16+0x47b/0x4c0
[   18.022165]  kasan_report+0x141/0x180
[   18.022195]  ? kmalloc_uaf_16+0x47b/0x4c0
[   18.022230]  __asan_report_load16_noabort+0x18/0x20
[   18.022257]  kmalloc_uaf_16+0x47b/0x4c0
[   18.022286]  ? __pfx_kmalloc_uaf_16+0x10/0x10
[   18.022315]  ? __schedule+0x10cc/0x2b30
[   18.022349]  ? __pfx_read_tsc+0x10/0x10
[   18.022376]  ? ktime_get_ts64+0x86/0x230
[   18.022412]  kunit_try_run_case+0x1a5/0x480
[   18.022444]  ? __pfx_kunit_try_run_case+0x10/0x10
[   18.022473]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   18.022537]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   18.022576]  ? __kthread_parkme+0x82/0x180
[   18.022607]  ? preempt_count_sub+0x50/0x80
[   18.022642]  ? __pfx_kunit_try_run_case+0x10/0x10
[   18.022673]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   18.022703]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   18.022733]  kthread+0x337/0x6f0
[   18.022761]  ? trace_preempt_on+0x20/0xc0
[   18.022792]  ? __pfx_kthread+0x10/0x10
[   18.022835]  ? _raw_spin_unlock_irq+0x47/0x80
[   18.022914]  ? calculate_sigpending+0x7b/0xa0
[   18.022982]  ? __pfx_kthread+0x10/0x10
[   18.023047]  ret_from_fork+0x41/0x80
[   18.023082]  ? __pfx_kthread+0x10/0x10
[   18.023112]  ret_from_fork_asm+0x1a/0x30
[   18.023156]  </TASK>
[   18.023169] 
[   18.041101] Allocated by task 188:
[   18.041705]  kasan_save_stack+0x45/0x70
[   18.042194]  kasan_save_track+0x18/0x40
[   18.043082]  kasan_save_alloc_info+0x3b/0x50
[   18.043589]  __kasan_kmalloc+0xb7/0xc0
[   18.043994]  __kmalloc_cache_noprof+0x189/0x420
[   18.044819]  kmalloc_uaf_16+0x15b/0x4c0
[   18.045220]  kunit_try_run_case+0x1a5/0x480
[   18.045821]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   18.046782]  kthread+0x337/0x6f0
[   18.047213]  ret_from_fork+0x41/0x80
[   18.047758]  ret_from_fork_asm+0x1a/0x30
[   18.048167] 
[   18.048413] Freed by task 188:
[   18.048989]  kasan_save_stack+0x45/0x70
[   18.049366]  kasan_save_track+0x18/0x40
[   18.049940]  kasan_save_free_info+0x3f/0x60
[   18.050407]  __kasan_slab_free+0x56/0x70
[   18.051242]  kfree+0x222/0x3f0
[   18.051484]  kmalloc_uaf_16+0x1d6/0x4c0
[   18.052127]  kunit_try_run_case+0x1a5/0x480
[   18.052833]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   18.053381]  kthread+0x337/0x6f0
[   18.053989]  ret_from_fork+0x41/0x80
[   18.054356]  ret_from_fork_asm+0x1a/0x30
[   18.055284] 
[   18.055538] The buggy address belongs to the object at ffff8881021e3ec0
[   18.055538]  which belongs to the cache kmalloc-16 of size 16
[   18.056910] The buggy address is located 0 bytes inside of
[   18.056910]  freed 16-byte region [ffff8881021e3ec0, ffff8881021e3ed0)
[   18.058020] 
[   18.058309] The buggy address belongs to the physical page:
[   18.058877] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1021e3
[   18.060158] flags: 0x200000000000000(node=0|zone=2)
[   18.060696] page_type: f5(slab)
[   18.061212] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   18.062000] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   18.062747] page dumped because: kasan: bad access detected
[   18.063356] 
[   18.063791] Memory state around the buggy address:
[   18.064438]  ffff8881021e3d80: 00 02 fc fc 00 02 fc fc fa fb fc fc fa fb fc fc
[   18.065225]  ffff8881021e3e00: fa fb fc fc 00 05 fc fc fa fb fc fc fa fb fc fc
[   18.065998] >ffff8881021e3e80: fa fb fc fc 00 00 fc fc fa fb fc fc fc fc fc fc
[   18.066796]                                            ^
[   18.067267]  ffff8881021e3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.068121]  ffff8881021e3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.068583] ==================================================================

[   19.719335] ==================================================================
[   19.720345] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438
[   19.720983] Read of size 16 at addr ffff00000a744680 by task kunit_try_catch/226
[   19.721655] 
[   19.721817] CPU: 3 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc3 #1 PREEMPT 
[   19.721868] Tainted: [B]=BAD_PAGE, [N]=TEST
[   19.721882] Hardware name: Radxa ROCK Pi 4B (DT)
[   19.721900] Call trace:
[   19.721912]  show_stack+0x20/0x38 (C)
[   19.721947]  dump_stack_lvl+0x8c/0xd0
[   19.721979]  print_report+0x118/0x608
[   19.722008]  kasan_report+0xdc/0x128
[   19.722037]  __asan_report_load16_noabort+0x20/0x30
[   19.722071]  kmalloc_uaf_16+0x3bc/0x438
[   19.722104]  kunit_try_run_case+0x170/0x3f0
[   19.722140]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   19.722179]  kthread+0x328/0x630
[   19.722213]  ret_from_fork+0x10/0x20
[   19.722247] 
[   19.727814] Allocated by task 226:
[   19.728140]  kasan_save_stack+0x3c/0x68
[   19.728514]  kasan_save_track+0x20/0x40
[   19.728886]  kasan_save_alloc_info+0x40/0x58
[   19.729299]  __kasan_kmalloc+0xd4/0xd8
[   19.729661]  __kmalloc_cache_noprof+0x15c/0x3c0
[   19.730102]  kmalloc_uaf_16+0x140/0x438
[   19.730477]  kunit_try_run_case+0x170/0x3f0
[   19.730884]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   19.731407]  kthread+0x328/0x630
[   19.731728]  ret_from_fork+0x10/0x20
[   19.732078] 
[   19.732231] Freed by task 226:
[   19.732525]  kasan_save_stack+0x3c/0x68
[   19.732897]  kasan_save_track+0x20/0x40
[   19.733266]  kasan_save_free_info+0x4c/0x78
[   19.733670]  __kasan_slab_free+0x6c/0x98
[   19.734048]  kfree+0x214/0x3c8
[   19.734355]  kmalloc_uaf_16+0x190/0x438
[   19.734731]  kunit_try_run_case+0x170/0x3f0
[   19.735137]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   19.735660]  kthread+0x328/0x630
[   19.735982]  ret_from_fork+0x10/0x20
[   19.736331] 
[   19.736484] The buggy address belongs to the object at ffff00000a744680
[   19.736484]  which belongs to the cache kmalloc-16 of size 16
[   19.737601] The buggy address is located 0 bytes inside of
[   19.737601]  freed 16-byte region [ffff00000a744680, ffff00000a744690)
[   19.738689] 
[   19.738843] The buggy address belongs to the physical page:
[   19.739360] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xa744
[   19.740084] flags: 0x3fffe0000000000(node=0|zone=0|lastcpupid=0x1ffff)
[   19.740695] page_type: f5(slab)
[   19.741008] raw: 03fffe0000000000 ffff000000402640 dead000000000122 0000000000000000
[   19.741723] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   19.742429] page dumped because: kasan: bad access detected
[   19.742944] 
[   19.743096] Memory state around the buggy address:
[   19.743542]  ffff00000a744580: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   19.744208]  ffff00000a744600: fa fb fc fc fa fb fc fc 00 05 fc fc 00 00 fc fc
[   19.744874] >ffff00000a744680: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   19.745534]                    ^
[   19.745845]  ffff00000a744700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   19.746510]  ffff00000a744780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   19.747171] ==================================================================