[   18.145364] ==================================================================
[   18.145430] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310
[   18.145491] Write of size 33 at addr fff00000c797b280 by task kunit_try_catch/188
[   18.145544] 
[   18.145797] CPU: 0 UID: 0 PID: 188 Comm: kunit_try_catch Tainted: G    B            N  6.15.4-rc3 #1 PREEMPT 
[   18.146002] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.146032] Hardware name: linux,dummy-virt (DT)
[   18.146414] Call trace:
[   18.146482]  show_stack+0x20/0x38 (C)
[   18.146640]  dump_stack_lvl+0x8c/0xd0
[   18.146725]  print_report+0x118/0x608
[   18.146772]  kasan_report+0xdc/0x128
[   18.146837]  kasan_check_range+0x100/0x1a8
[   18.147168]  __asan_memset+0x34/0x78
[   18.147248]  kmalloc_uaf_memset+0x170/0x310
[   18.147300]  kunit_try_run_case+0x170/0x3f0
[   18.147451]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.147511]  kthread+0x328/0x630
[   18.147556]  ret_from_fork+0x10/0x20
[   18.147610] 
[   18.147629] Allocated by task 188:
[   18.147913]  kasan_save_stack+0x3c/0x68
[   18.148069]  kasan_save_track+0x20/0x40
[   18.148172]  kasan_save_alloc_info+0x40/0x58
[   18.148360]  __kasan_kmalloc+0xd4/0xd8
[   18.148465]  __kmalloc_cache_noprof+0x16c/0x3c0
[   18.148609]  kmalloc_uaf_memset+0xb8/0x310
[   18.148671]  kunit_try_run_case+0x170/0x3f0
[   18.148731]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.148777]  kthread+0x328/0x630
[   18.148814]  ret_from_fork+0x10/0x20
[   18.148849] 
[   18.149049] Freed by task 188:
[   18.149123]  kasan_save_stack+0x3c/0x68
[   18.149326]  kasan_save_track+0x20/0x40
[   18.149440]  kasan_save_free_info+0x4c/0x78
[   18.149529]  __kasan_slab_free+0x6c/0x98
[   18.149745]  kfree+0x214/0x3c8
[   18.149787]  kmalloc_uaf_memset+0x11c/0x310
[   18.150026]  kunit_try_run_case+0x170/0x3f0
[   18.150801]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.150929]  kthread+0x328/0x630
[   18.150996]  ret_from_fork+0x10/0x20
[   18.151059] 
[   18.151108] The buggy address belongs to the object at fff00000c797b280
[   18.151108]  which belongs to the cache kmalloc-64 of size 64
[   18.151271] The buggy address is located 0 bytes inside of
[   18.151271]  freed 64-byte region [fff00000c797b280, fff00000c797b2c0)
[   18.151493] 
[   18.151537] The buggy address belongs to the physical page:
[   18.151783] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10797b
[   18.152002] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   18.152434] page_type: f5(slab)
[   18.152616] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000
[   18.152778] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
[   18.152826] page dumped because: kasan: bad access detected
[   18.153265] 
[   18.153453] Memory state around the buggy address:
[   18.153516]  fff00000c797b180: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   18.153612]  fff00000c797b200: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   18.153668] >fff00000c797b280: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   18.153737]                    ^
[   18.153783]  fff00000c797b300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.153845]  fff00000c797b380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.153901] ==================================================================

[   11.198606] ==================================================================
[   11.199178] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360
[   11.199448] Write of size 33 at addr ffff8881029fb280 by task kunit_try_catch/205
[   11.199862] 
[   11.200297] CPU: 0 UID: 0 PID: 205 Comm: kunit_try_catch Tainted: G    B            N  6.15.4-rc3 #1 PREEMPT(voluntary) 
[   11.200409] Tainted: [B]=BAD_PAGE, [N]=TEST
[   11.200423] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   11.200447] Call Trace:
[   11.200462]  <TASK>
[   11.200481]  dump_stack_lvl+0x73/0xb0
[   11.200512]  print_report+0xd1/0x650
[   11.200536]  ? __virt_addr_valid+0x1db/0x2d0
[   11.200559]  ? kmalloc_uaf_memset+0x1a3/0x360
[   11.200580]  ? kasan_complete_mode_report_info+0x64/0x200
[   11.200675]  ? kmalloc_uaf_memset+0x1a3/0x360
[   11.200697]  kasan_report+0x141/0x180
[   11.200734]  ? kmalloc_uaf_memset+0x1a3/0x360
[   11.200762]  kasan_check_range+0x10c/0x1c0
[   11.200782]  __asan_memset+0x27/0x50
[   11.200802]  kmalloc_uaf_memset+0x1a3/0x360
[   11.200823]  ? __pfx_kmalloc_uaf_memset+0x10/0x10
[   11.200845]  ? __schedule+0x10cc/0x2b60
[   11.200869]  ? __pfx_read_tsc+0x10/0x10
[   11.200889]  ? ktime_get_ts64+0x86/0x230
[   11.200929]  kunit_try_run_case+0x1a5/0x480
[   11.200955]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.200977]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   11.201001]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   11.201023]  ? __kthread_parkme+0x82/0x180
[   11.201046]  ? preempt_count_sub+0x50/0x80
[   11.201071]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.201094]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.201116]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   11.201138]  kthread+0x337/0x6f0
[   11.201155]  ? trace_preempt_on+0x20/0xc0
[   11.201179]  ? __pfx_kthread+0x10/0x10
[   11.201196]  ? _raw_spin_unlock_irq+0x47/0x80
[   11.201217]  ? calculate_sigpending+0x7b/0xa0
[   11.201238]  ? __pfx_kthread+0x10/0x10
[   11.201256]  ret_from_fork+0x41/0x80
[   11.201276]  ? __pfx_kthread+0x10/0x10
[   11.201294]  ret_from_fork_asm+0x1a/0x30
[   11.201325]  </TASK>
[   11.201337] 
[   11.208766] Allocated by task 205:
[   11.208965]  kasan_save_stack+0x45/0x70
[   11.209184]  kasan_save_track+0x18/0x40
[   11.209318]  kasan_save_alloc_info+0x3b/0x50
[   11.209462]  __kasan_kmalloc+0xb7/0xc0
[   11.209593]  __kmalloc_cache_noprof+0x189/0x420
[   11.209744]  kmalloc_uaf_memset+0xa9/0x360
[   11.210136]  kunit_try_run_case+0x1a5/0x480
[   11.210496]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.210882]  kthread+0x337/0x6f0
[   11.211052]  ret_from_fork+0x41/0x80
[   11.211272]  ret_from_fork_asm+0x1a/0x30
[   11.211449] 
[   11.211530] Freed by task 205:
[   11.211742]  kasan_save_stack+0x45/0x70
[   11.212038]  kasan_save_track+0x18/0x40
[   11.212213]  kasan_save_free_info+0x3f/0x60
[   11.212369]  __kasan_slab_free+0x56/0x70
[   11.212555]  kfree+0x222/0x3f0
[   11.212681]  kmalloc_uaf_memset+0x12b/0x360
[   11.212941]  kunit_try_run_case+0x1a5/0x480
[   11.213104]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.213322]  kthread+0x337/0x6f0
[   11.213441]  ret_from_fork+0x41/0x80
[   11.213673]  ret_from_fork_asm+0x1a/0x30
[   11.213989] 
[   11.214083] The buggy address belongs to the object at ffff8881029fb280
[   11.214083]  which belongs to the cache kmalloc-64 of size 64
[   11.214535] The buggy address is located 0 bytes inside of
[   11.214535]  freed 64-byte region [ffff8881029fb280, ffff8881029fb2c0)
[   11.215378] 
[   11.215475] The buggy address belongs to the physical page:
[   11.215687] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029fb
[   11.215941] flags: 0x200000000000000(node=0|zone=2)
[   11.216109] page_type: f5(slab)
[   11.216235] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000
[   11.216471] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
[   11.216786] page dumped because: kasan: bad access detected
[   11.217218] 
[   11.217309] Memory state around the buggy address:
[   11.217531]  ffff8881029fb180: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   11.217955]  ffff8881029fb200: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   11.218168] >ffff8881029fb280: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   11.218378]                    ^
[   11.218489]  ffff8881029fb300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.218698]  ffff8881029fb380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.218908] ==================================================================