[   32.581466] ==================================================================
[   32.581644] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438
[   32.581835] Read of size 16 at addr fff00000c5788980 by task kunit_try_catch/199
[   32.581995] 
[   32.582026] CPU: 1 UID: 0 PID: 199 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4-next-20250702 #1 PREEMPT 
[   32.582110] Tainted: [B]=BAD_PAGE, [N]=TEST
[   32.582136] Hardware name: linux,dummy-virt (DT)
[   32.582179] Call trace:
[   32.582201]  show_stack+0x20/0x38 (C)
[   32.582417]  dump_stack_lvl+0x8c/0xd0
[   32.582578]  print_report+0x118/0x608
[   32.582659]  kasan_report+0xdc/0x128
[   32.582705]  __asan_report_load16_noabort+0x20/0x30
[   32.582753]  kmalloc_uaf_16+0x3bc/0x438
[   32.582797]  kunit_try_run_case+0x170/0x3f0
[   32.582845]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.582898]  kthread+0x328/0x630
[   32.582940]  ret_from_fork+0x10/0x20
[   32.582987] 
[   32.583005] Allocated by task 199:
[   32.583033]  kasan_save_stack+0x3c/0x68
[   32.583080]  kasan_save_track+0x20/0x40
[   32.583228]  kasan_save_alloc_info+0x40/0x58
[   32.583275]  __kasan_kmalloc+0xd4/0xd8
[   32.583312]  __kmalloc_cache_noprof+0x16c/0x3c0
[   32.583350]  kmalloc_uaf_16+0x140/0x438
[   32.583385]  kunit_try_run_case+0x170/0x3f0
[   32.583423]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.583512]  kthread+0x328/0x630
[   32.583544]  ret_from_fork+0x10/0x20
[   32.583578] 
[   32.583596] Freed by task 199:
[   32.583622]  kasan_save_stack+0x3c/0x68
[   32.583658]  kasan_save_track+0x20/0x40
[   32.583913]  kasan_save_free_info+0x4c/0x78
[   32.584142]  __kasan_slab_free+0x6c/0x98
[   32.584283]  kfree+0x214/0x3c8
[   32.584345]  kmalloc_uaf_16+0x190/0x438
[   32.584380]  kunit_try_run_case+0x170/0x3f0
[   32.584417]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.584460]  kthread+0x328/0x630
[   32.584491]  ret_from_fork+0x10/0x20
[   32.584526] 
[   32.584545] The buggy address belongs to the object at fff00000c5788980
[   32.584545]  which belongs to the cache kmalloc-16 of size 16
[   32.584703] The buggy address is located 0 bytes inside of
[   32.584703]  freed 16-byte region [fff00000c5788980, fff00000c5788990)
[   32.584824] 
[   32.584844] The buggy address belongs to the physical page:
[   32.584873] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105788
[   32.584943] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   32.585012] page_type: f5(slab)
[   32.585051] raw: 0bfffe0000000000 fff00000c0001640 dead000000000100 dead000000000122
[   32.585100] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   32.585140] page dumped because: kasan: bad access detected
[   32.585182] 
[   32.585200] Memory state around the buggy address:
[   32.585239]  fff00000c5788880: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   32.585283]  fff00000c5788900: fa fb fc fc fa fb fc fc fa fb fc fc 00 00 fc fc
[   32.585327] >fff00000c5788980: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.585440]                    ^
[   32.585470]  fff00000c5788a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.585539]  fff00000c5788a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.585596] ==================================================================

[   23.075276] ==================================================================
[   23.075747] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0
[   23.076044] Read of size 16 at addr ffff8881048b6380 by task kunit_try_catch/216
[   23.076489] 
[   23.076601] CPU: 1 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4-next-20250702 #1 PREEMPT(voluntary) 
[   23.076660] Tainted: [B]=BAD_PAGE, [N]=TEST
[   23.076673] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   23.076704] Call Trace:
[   23.076716]  <TASK>
[   23.076731]  dump_stack_lvl+0x73/0xb0
[   23.076760]  print_report+0xd1/0x650
[   23.076781]  ? __virt_addr_valid+0x1db/0x2d0
[   23.076803]  ? kmalloc_uaf_16+0x47b/0x4c0
[   23.076823]  ? kasan_complete_mode_report_info+0x64/0x200
[   23.076848]  ? kmalloc_uaf_16+0x47b/0x4c0
[   23.076869]  kasan_report+0x141/0x180
[   23.076890]  ? kmalloc_uaf_16+0x47b/0x4c0
[   23.076914]  __asan_report_load16_noabort+0x18/0x20
[   23.076938]  kmalloc_uaf_16+0x47b/0x4c0
[   23.076958]  ? __pfx_kmalloc_uaf_16+0x10/0x10
[   23.076979]  ? __schedule+0x10cc/0x2b60
[   23.077000]  ? __pfx_read_tsc+0x10/0x10
[   23.077021]  ? ktime_get_ts64+0x86/0x230
[   23.077045]  kunit_try_run_case+0x1a5/0x480
[   23.077070]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.077093]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   23.077114]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   23.077135]  ? __kthread_parkme+0x82/0x180
[   23.077155]  ? preempt_count_sub+0x50/0x80
[   23.077178]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.077202]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.077226]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   23.077249]  kthread+0x337/0x6f0
[   23.077268]  ? trace_preempt_on+0x20/0xc0
[   23.077291]  ? __pfx_kthread+0x10/0x10
[   23.077323]  ? _raw_spin_unlock_irq+0x47/0x80
[   23.077346]  ? calculate_sigpending+0x7b/0xa0
[   23.077369]  ? __pfx_kthread+0x10/0x10
[   23.077390]  ret_from_fork+0x116/0x1d0
[   23.077409]  ? __pfx_kthread+0x10/0x10
[   23.077429]  ret_from_fork_asm+0x1a/0x30
[   23.077458]  </TASK>
[   23.077470] 
[   23.084267] Allocated by task 216:
[   23.084402]  kasan_save_stack+0x45/0x70
[   23.084538]  kasan_save_track+0x18/0x40
[   23.084667]  kasan_save_alloc_info+0x3b/0x50
[   23.084869]  __kasan_kmalloc+0xb7/0xc0
[   23.085046]  __kmalloc_cache_noprof+0x189/0x420
[   23.085257]  kmalloc_uaf_16+0x15b/0x4c0
[   23.085596]  kunit_try_run_case+0x1a5/0x480
[   23.085917]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.086108]  kthread+0x337/0x6f0
[   23.086222]  ret_from_fork+0x116/0x1d0
[   23.086387]  ret_from_fork_asm+0x1a/0x30
[   23.086563] 
[   23.086629] Freed by task 216:
[   23.086738]  kasan_save_stack+0x45/0x70
[   23.086983]  kasan_save_track+0x18/0x40
[   23.087147]  kasan_save_free_info+0x3f/0x60
[   23.087329]  __kasan_slab_free+0x56/0x70
[   23.087546]  kfree+0x222/0x3f0
[   23.087683]  kmalloc_uaf_16+0x1d6/0x4c0
[   23.087848]  kunit_try_run_case+0x1a5/0x480
[   23.088020]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.088240]  kthread+0x337/0x6f0
[   23.088414]  ret_from_fork+0x116/0x1d0
[   23.088638]  ret_from_fork_asm+0x1a/0x30
[   23.088822] 
[   23.088902] The buggy address belongs to the object at ffff8881048b6380
[   23.088902]  which belongs to the cache kmalloc-16 of size 16
[   23.090388] The buggy address is located 0 bytes inside of
[   23.090388]  freed 16-byte region [ffff8881048b6380, ffff8881048b6390)
[   23.090749] 
[   23.090820] The buggy address belongs to the physical page:
[   23.091136] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1048b6
[   23.091862] flags: 0x200000000000000(node=0|zone=2)
[   23.092297] page_type: f5(slab)
[   23.092641] raw: 0200000000000000 ffff888100041640 dead000000000100 dead000000000122
[   23.093358] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   23.094095] page dumped because: kasan: bad access detected
[   23.094589] 
[   23.094707] Memory state around the buggy address:
[   23.095068]  ffff8881048b6280: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   23.095283]  ffff8881048b6300: fa fb fc fc fa fb fc fc fa fb fc fc 00 00 fc fc
[   23.095525] >ffff8881048b6380: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   23.096187]                    ^
[   23.096490]  ffff8881048b6400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   23.097190]  ffff8881048b6480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   23.097930] ==================================================================

[   23.336550] ==================================================================
[   23.337046] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0
[   23.337468] Read of size 16 at addr ffff8881049ad560 by task kunit_try_catch/217
[   23.338013] 
[   23.338168] CPU: 1 UID: 0 PID: 217 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4-next-20250702 #1 PREEMPT(voluntary) 
[   23.338245] Tainted: [B]=BAD_PAGE, [N]=TEST
[   23.338258] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   23.338281] Call Trace:
[   23.338295]  <TASK>
[   23.338315]  dump_stack_lvl+0x73/0xb0
[   23.338349]  print_report+0xd1/0x650
[   23.338373]  ? __virt_addr_valid+0x1db/0x2d0
[   23.338397]  ? kmalloc_uaf_16+0x47b/0x4c0
[   23.338417]  ? kasan_complete_mode_report_info+0x64/0x200
[   23.338442]  ? kmalloc_uaf_16+0x47b/0x4c0
[   23.338462]  kasan_report+0x141/0x180
[   23.338484]  ? kmalloc_uaf_16+0x47b/0x4c0
[   23.338508]  __asan_report_load16_noabort+0x18/0x20
[   23.338532]  kmalloc_uaf_16+0x47b/0x4c0
[   23.338552]  ? __pfx_kmalloc_uaf_16+0x10/0x10
[   23.338574]  ? __schedule+0x10cc/0x2b60
[   23.338595]  ? __pfx_read_tsc+0x10/0x10
[   23.338618]  ? ktime_get_ts64+0x86/0x230
[   23.338644]  kunit_try_run_case+0x1a5/0x480
[   23.338670]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.338694]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   23.338716]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   23.338737]  ? __kthread_parkme+0x82/0x180
[   23.338758]  ? preempt_count_sub+0x50/0x80
[   23.338782]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.338806]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.338830]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   23.338854]  kthread+0x337/0x6f0
[   23.338873]  ? trace_preempt_on+0x20/0xc0
[   23.338897]  ? __pfx_kthread+0x10/0x10
[   23.338917]  ? _raw_spin_unlock_irq+0x47/0x80
[   23.338940]  ? calculate_sigpending+0x7b/0xa0
[   23.338964]  ? __pfx_kthread+0x10/0x10
[   23.339003]  ret_from_fork+0x116/0x1d0
[   23.339022]  ? __pfx_kthread+0x10/0x10
[   23.339043]  ret_from_fork_asm+0x1a/0x30
[   23.339083]  </TASK>
[   23.339097] 
[   23.347352] Allocated by task 217:
[   23.347503]  kasan_save_stack+0x45/0x70
[   23.347654]  kasan_save_track+0x18/0x40
[   23.347783]  kasan_save_alloc_info+0x3b/0x50
[   23.347924]  __kasan_kmalloc+0xb7/0xc0
[   23.348048]  __kmalloc_cache_noprof+0x189/0x420
[   23.348451]  kmalloc_uaf_16+0x15b/0x4c0
[   23.348824]  kunit_try_run_case+0x1a5/0x480
[   23.349520]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.350110]  kthread+0x337/0x6f0
[   23.350399]  ret_from_fork+0x116/0x1d0
[   23.350893]  ret_from_fork_asm+0x1a/0x30
[   23.351565] 
[   23.351789] Freed by task 217:
[   23.352139]  kasan_save_stack+0x45/0x70
[   23.352571]  kasan_save_track+0x18/0x40
[   23.352937]  kasan_save_free_info+0x3f/0x60
[   23.353569]  __kasan_slab_free+0x56/0x70
[   23.353981]  kfree+0x222/0x3f0
[   23.354318]  kmalloc_uaf_16+0x1d6/0x4c0
[   23.354753]  kunit_try_run_case+0x1a5/0x480
[   23.355294]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.355784]  kthread+0x337/0x6f0
[   23.356141]  ret_from_fork+0x116/0x1d0
[   23.356564]  ret_from_fork_asm+0x1a/0x30
[   23.356948] 
[   23.357114] The buggy address belongs to the object at ffff8881049ad560
[   23.357114]  which belongs to the cache kmalloc-16 of size 16
[   23.358088] The buggy address is located 0 bytes inside of
[   23.358088]  freed 16-byte region [ffff8881049ad560, ffff8881049ad570)
[   23.358975] 
[   23.359148] The buggy address belongs to the physical page:
[   23.359764] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1049ad
[   23.360320] flags: 0x200000000000000(node=0|zone=2)
[   23.360778] page_type: f5(slab)
[   23.361108] raw: 0200000000000000 ffff888100041640 dead000000000100 dead000000000122
[   23.361560] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   23.361786] page dumped because: kasan: bad access detected
[   23.361961] 
[   23.362025] Memory state around the buggy address:
[   23.362430]  ffff8881049ad400: 00 06 fc fc fa fb fc fc 00 00 fc fc fa fb fc fc
[   23.363178]  ffff8881049ad480: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   23.363892] >ffff8881049ad500: fa fb fc fc fa fb fc fc 00 00 fc fc fa fb fc fc
[   23.364660]                                                        ^
[   23.365326]  ffff8881049ad580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   23.366068]  ffff8881049ad600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   23.366718] ==================================================================