[   31.198652] ==================================================================
[   31.198724] BUG: KASAN: slab-use-after-free in kmalloc_uaf+0x300/0x338
[   31.198870] Read of size 1 at addr fff00000c5a30ca8 by task kunit_try_catch/216
[   31.198927] 
[   31.198984] CPU: 0 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4-next-20250703 #1 PREEMPT 
[   31.199080] Tainted: [B]=BAD_PAGE, [N]=TEST
[   31.199107] Hardware name: linux,dummy-virt (DT)
[   31.199307] Call trace:
[   31.199495]  show_stack+0x20/0x38 (C)
[   31.199565]  dump_stack_lvl+0x8c/0xd0
[   31.199792]  print_report+0x118/0x608
[   31.200115]  kasan_report+0xdc/0x128
[   31.200186]  __asan_report_load1_noabort+0x20/0x30
[   31.200239]  kmalloc_uaf+0x300/0x338
[   31.200284]  kunit_try_run_case+0x170/0x3f0
[   31.200503]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   31.200975]  kthread+0x328/0x630
[   31.201157]  ret_from_fork+0x10/0x20
[   31.201387] 
[   31.201456] Allocated by task 216:
[   31.201494]  kasan_save_stack+0x3c/0x68
[   31.201744]  kasan_save_track+0x20/0x40
[   31.201981]  kasan_save_alloc_info+0x40/0x58
[   31.202045]  __kasan_kmalloc+0xd4/0xd8
[   31.202090]  __kmalloc_cache_noprof+0x16c/0x3c0
[   31.202148]  kmalloc_uaf+0xb8/0x338
[   31.202228]  kunit_try_run_case+0x170/0x3f0
[   31.202365]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   31.202421]  kthread+0x328/0x630
[   31.202463]  ret_from_fork+0x10/0x20
[   31.202499] 
[   31.202613] Freed by task 216:
[   31.202693]  kasan_save_stack+0x3c/0x68
[   31.202906]  kasan_save_track+0x20/0x40
[   31.202970]  kasan_save_free_info+0x4c/0x78
[   31.203015]  __kasan_slab_free+0x6c/0x98
[   31.203065]  kfree+0x214/0x3c8
[   31.203099]  kmalloc_uaf+0x11c/0x338
[   31.203163]  kunit_try_run_case+0x170/0x3f0
[   31.203205]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   31.203271]  kthread+0x328/0x630
[   31.203317]  ret_from_fork+0x10/0x20
[   31.203354] 
[   31.203388] The buggy address belongs to the object at fff00000c5a30ca0
[   31.203388]  which belongs to the cache kmalloc-16 of size 16
[   31.203492] The buggy address is located 8 bytes inside of
[   31.203492]  freed 16-byte region [fff00000c5a30ca0, fff00000c5a30cb0)
[   31.203567] 
[   31.203586] The buggy address belongs to the physical page:
[   31.203629] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xfff00000c5a30be0 pfn:0x105a30
[   31.203701] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   31.203768] page_type: f5(slab)
[   31.203818] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000
[   31.203887] raw: fff00000c5a30be0 000000008080007f 00000000f5000000 0000000000000000
[   31.203953] page dumped because: kasan: bad access detected
[   31.203986] 
[   31.204014] Memory state around the buggy address:
[   31.204046]  fff00000c5a30b80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   31.204101]  fff00000c5a30c00: 00 04 fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   31.204144] >fff00000c5a30c80: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc
[   31.204202]                                   ^
[   31.204255]  fff00000c5a30d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   31.204858]  fff00000c5a30d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   31.204946] ==================================================================

[   23.377517] ==================================================================
[   23.377964] BUG: KASAN: slab-use-after-free in kmalloc_uaf+0x320/0x380
[   23.378503] Read of size 1 at addr ffff8881054e0a08 by task kunit_try_catch/233
[   23.378801] 
[   23.378908] CPU: 1 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4-next-20250703 #1 PREEMPT(voluntary) 
[   23.378955] Tainted: [B]=BAD_PAGE, [N]=TEST
[   23.378968] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   23.378989] Call Trace:
[   23.379002]  <TASK>
[   23.379020]  dump_stack_lvl+0x73/0xb0
[   23.379048]  print_report+0xd1/0x650
[   23.379069]  ? __virt_addr_valid+0x1db/0x2d0
[   23.379092]  ? kmalloc_uaf+0x320/0x380
[   23.379110]  ? kasan_complete_mode_report_info+0x64/0x200
[   23.379135]  ? kmalloc_uaf+0x320/0x380
[   23.379154]  kasan_report+0x141/0x180
[   23.379175]  ? kmalloc_uaf+0x320/0x380
[   23.379199]  __asan_report_load1_noabort+0x18/0x20
[   23.379222]  kmalloc_uaf+0x320/0x380
[   23.379241]  ? __pfx_kmalloc_uaf+0x10/0x10
[   23.379323]  ? __schedule+0x10cc/0x2b60
[   23.379353]  ? __pfx_read_tsc+0x10/0x10
[   23.379374]  ? ktime_get_ts64+0x86/0x230
[   23.379398]  kunit_try_run_case+0x1a5/0x480
[   23.379424]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.379447]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   23.379480]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   23.379504]  ? __kthread_parkme+0x82/0x180
[   23.379525]  ? preempt_count_sub+0x50/0x80
[   23.379547]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.379571]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.379594]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   23.379618]  kthread+0x337/0x6f0
[   23.379637]  ? trace_preempt_on+0x20/0xc0
[   23.379659]  ? __pfx_kthread+0x10/0x10
[   23.379680]  ? _raw_spin_unlock_irq+0x47/0x80
[   23.379703]  ? calculate_sigpending+0x7b/0xa0
[   23.379727]  ? __pfx_kthread+0x10/0x10
[   23.379748]  ret_from_fork+0x116/0x1d0
[   23.379767]  ? __pfx_kthread+0x10/0x10
[   23.379787]  ret_from_fork_asm+0x1a/0x30
[   23.379818]  </TASK>
[   23.379830] 
[   23.389033] Allocated by task 233:
[   23.389329]  kasan_save_stack+0x45/0x70
[   23.389799]  kasan_save_track+0x18/0x40
[   23.390134]  kasan_save_alloc_info+0x3b/0x50
[   23.390463]  __kasan_kmalloc+0xb7/0xc0
[   23.390620]  __kmalloc_cache_noprof+0x189/0x420
[   23.390937]  kmalloc_uaf+0xaa/0x380
[   23.391311]  kunit_try_run_case+0x1a5/0x480
[   23.391487]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.391895]  kthread+0x337/0x6f0
[   23.392164]  ret_from_fork+0x116/0x1d0
[   23.392300]  ret_from_fork_asm+0x1a/0x30
[   23.392705] 
[   23.392795] Freed by task 233:
[   23.392939]  kasan_save_stack+0x45/0x70
[   23.393336]  kasan_save_track+0x18/0x40
[   23.393533]  kasan_save_free_info+0x3f/0x60
[   23.394069]  __kasan_slab_free+0x56/0x70
[   23.394203]  kfree+0x222/0x3f0
[   23.394644]  kmalloc_uaf+0x12c/0x380
[   23.394789]  kunit_try_run_case+0x1a5/0x480
[   23.395081]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.395539]  kthread+0x337/0x6f0
[   23.395732]  ret_from_fork+0x116/0x1d0
[   23.396000]  ret_from_fork_asm+0x1a/0x30
[   23.396151] 
[   23.396320] The buggy address belongs to the object at ffff8881054e0a00
[   23.396320]  which belongs to the cache kmalloc-16 of size 16
[   23.397032] The buggy address is located 8 bytes inside of
[   23.397032]  freed 16-byte region [ffff8881054e0a00, ffff8881054e0a10)
[   23.397778] 
[   23.397956] The buggy address belongs to the physical page:
[   23.398501] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1054e0
[   23.398836] flags: 0x200000000000000(node=0|zone=2)
[   23.399142] page_type: f5(slab)
[   23.399420] raw: 0200000000000000 ffff888100041640 dead000000000100 dead000000000122
[   23.399892] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   23.400368] page dumped because: kasan: bad access detected
[   23.400703] 
[   23.400797] Memory state around the buggy address:
[   23.400988]  ffff8881054e0900: 00 00 fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   23.401636]  ffff8881054e0980: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   23.401885] >ffff8881054e0a00: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   23.402437]                       ^
[   23.402707]  ffff8881054e0a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   23.402956]  ffff8881054e0b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   23.403579] ==================================================================