[   30.680644] ==================================================================
[   30.680733] BUG: KASAN: slab-use-after-free in kmalloc_uaf+0x300/0x338
[   30.680784] Read of size 1 at addr fff00000c648e3c8 by task kunit_try_catch/216
[   30.680851] 
[   30.680898] CPU: 0 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6-next-20250715 #1 PREEMPT 
[   30.680983] Tainted: [B]=BAD_PAGE, [N]=TEST
[   30.681010] Hardware name: linux,dummy-virt (DT)
[   30.681040] Call trace:
[   30.681060]  show_stack+0x20/0x38 (C)
[   30.681108]  dump_stack_lvl+0x8c/0xd0
[   30.681172]  print_report+0x118/0x5d0
[   30.681318]  kasan_report+0xdc/0x128
[   30.681374]  __asan_report_load1_noabort+0x20/0x30
[   30.681673]  kmalloc_uaf+0x300/0x338
[   30.681856]  kunit_try_run_case+0x170/0x3f0
[   30.681992]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   30.682079]  kthread+0x328/0x630
[   30.682143]  ret_from_fork+0x10/0x20
[   30.682192] 
[   30.682210] Allocated by task 216:
[   30.682239]  kasan_save_stack+0x3c/0x68
[   30.682281]  kasan_save_track+0x20/0x40
[   30.682321]  kasan_save_alloc_info+0x40/0x58
[   30.682834]  __kasan_kmalloc+0xd4/0xd8
[   30.682913]  __kmalloc_cache_noprof+0x16c/0x3c0
[   30.683002]  kmalloc_uaf+0xb8/0x338
[   30.683153]  kunit_try_run_case+0x170/0x3f0
[   30.683248]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   30.683369]  kthread+0x328/0x630
[   30.683457]  ret_from_fork+0x10/0x20
[   30.683542] 
[   30.683562] Freed by task 216:
[   30.683589]  kasan_save_stack+0x3c/0x68
[   30.683664]  kasan_save_track+0x20/0x40
[   30.683990]  kasan_save_free_info+0x4c/0x78
[   30.684100]  __kasan_slab_free+0x6c/0x98
[   30.684193]  kfree+0x214/0x3c8
[   30.684319]  kmalloc_uaf+0x11c/0x338
[   30.684621]  kunit_try_run_case+0x170/0x3f0
[   30.684744]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   30.684864]  kthread+0x328/0x630
[   30.684940]  ret_from_fork+0x10/0x20
[   30.685077] 
[   30.685195] The buggy address belongs to the object at fff00000c648e3c0
[   30.685195]  which belongs to the cache kmalloc-16 of size 16
[   30.685311] The buggy address is located 8 bytes inside of
[   30.685311]  freed 16-byte region [fff00000c648e3c0, fff00000c648e3d0)
[   30.685371] 
[   30.685671] The buggy address belongs to the physical page:
[   30.685784] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10648e
[   30.685867] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   30.685932] page_type: f5(slab)
[   30.685969] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000
[   30.686046] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   30.686086] page dumped because: kasan: bad access detected
[   30.686147] 
[   30.686165] Memory state around the buggy address:
[   30.686198]  fff00000c648e280: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   30.686240]  fff00000c648e300: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   30.686282] >fff00000c648e380: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc
[   30.686412]                                               ^
[   30.686644]  fff00000c648e400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.686764]  fff00000c648e480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.686886] ==================================================================

[   24.293806] ==================================================================
[   24.294438] BUG: KASAN: slab-use-after-free in kmalloc_uaf+0x320/0x380
[   24.295057] Read of size 1 at addr ffff8881058f7168 by task kunit_try_catch/232
[   24.295338] 
[   24.295510] CPU: 0 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6-next-20250715 #1 PREEMPT(voluntary) 
[   24.295804] Tainted: [B]=BAD_PAGE, [N]=TEST
[   24.295823] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   24.296041] Call Trace:
[   24.296074]  <TASK>
[   24.296096]  dump_stack_lvl+0x73/0xb0
[   24.296136]  print_report+0xd1/0x610
[   24.296164]  ? __virt_addr_valid+0x1db/0x2d0
[   24.296193]  ? kmalloc_uaf+0x320/0x380
[   24.296217]  ? kasan_complete_mode_report_info+0x64/0x200
[   24.296248]  ? kmalloc_uaf+0x320/0x380
[   24.296274]  kasan_report+0x141/0x180
[   24.296301]  ? kmalloc_uaf+0x320/0x380
[   24.296332]  __asan_report_load1_noabort+0x18/0x20
[   24.296360]  kmalloc_uaf+0x320/0x380
[   24.296385]  ? __pfx_kmalloc_uaf+0x10/0x10
[   24.296410]  ? __schedule+0x10cc/0x2b60
[   24.296437]  ? __pfx_read_tsc+0x10/0x10
[   24.296463]  ? ktime_get_ts64+0x86/0x230
[   24.296494]  kunit_try_run_case+0x1a5/0x480
[   24.296532]  ? __pfx_kunit_try_run_case+0x10/0x10
[   24.296558]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   24.296599]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   24.296626]  ? __kthread_parkme+0x82/0x180
[   24.296665]  ? preempt_count_sub+0x50/0x80
[   24.296697]  ? __pfx_kunit_try_run_case+0x10/0x10
[   24.296725]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   24.296756]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   24.296786]  kthread+0x337/0x6f0
[   24.296811]  ? trace_preempt_on+0x20/0xc0
[   24.296840]  ? __pfx_kthread+0x10/0x10
[   24.296865]  ? _raw_spin_unlock_irq+0x47/0x80
[   24.296894]  ? calculate_sigpending+0x7b/0xa0
[   24.296923]  ? __pfx_kthread+0x10/0x10
[   24.296950]  ret_from_fork+0x116/0x1d0
[   24.296973]  ? __pfx_kthread+0x10/0x10
[   24.296998]  ret_from_fork_asm+0x1a/0x30
[   24.297038]  </TASK>
[   24.297051] 
[   24.307764] Allocated by task 232:
[   24.307951]  kasan_save_stack+0x45/0x70
[   24.308163]  kasan_save_track+0x18/0x40
[   24.308359]  kasan_save_alloc_info+0x3b/0x50
[   24.308688]  __kasan_kmalloc+0xb7/0xc0
[   24.308870]  __kmalloc_cache_noprof+0x189/0x420
[   24.309106]  kmalloc_uaf+0xaa/0x380
[   24.309233]  kunit_try_run_case+0x1a5/0x480
[   24.309376]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   24.309653]  kthread+0x337/0x6f0
[   24.309999]  ret_from_fork+0x116/0x1d0
[   24.310233]  ret_from_fork_asm+0x1a/0x30
[   24.310436] 
[   24.310510] Freed by task 232:
[   24.310642]  kasan_save_stack+0x45/0x70
[   24.310859]  kasan_save_track+0x18/0x40
[   24.311158]  kasan_save_free_info+0x3f/0x60
[   24.311373]  __kasan_slab_free+0x56/0x70
[   24.311560]  kfree+0x222/0x3f0
[   24.311818]  kmalloc_uaf+0x12c/0x380
[   24.311978]  kunit_try_run_case+0x1a5/0x480
[   24.312184]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   24.312419]  kthread+0x337/0x6f0
[   24.312623]  ret_from_fork+0x116/0x1d0
[   24.312847]  ret_from_fork_asm+0x1a/0x30
[   24.313054] 
[   24.313146] The buggy address belongs to the object at ffff8881058f7160
[   24.313146]  which belongs to the cache kmalloc-16 of size 16
[   24.313528] The buggy address is located 8 bytes inside of
[   24.313528]  freed 16-byte region [ffff8881058f7160, ffff8881058f7170)
[   24.314115] 
[   24.314208] The buggy address belongs to the physical page:
[   24.314453] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1058f7
[   24.315110] flags: 0x200000000000000(node=0|zone=2)
[   24.315374] page_type: f5(slab)
[   24.315558] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   24.315791] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   24.316088] page dumped because: kasan: bad access detected
[   24.316443] 
[   24.316566] Memory state around the buggy address:
[   24.316927]  ffff8881058f7000: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   24.317244]  ffff8881058f7080: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   24.317540] >ffff8881058f7100: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   24.317935]                                                           ^
[   24.318245]  ffff8881058f7180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   24.318544]  ffff8881058f7200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   24.319063] ==================================================================