Hay
Date
June 18, 2025, 6:43 a.m.

Environment
qemu-arm64
qemu-x86_64

[   20.330169] ==================================================================
[   20.330406] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_in_memset+0x144/0x2d0
[   20.330674] Write of size 128 at addr fff00000c6423600 by task kunit_try_catch/180
[   20.330910] 
[   20.331063] CPU: 0 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc2-next-20250618 #1 PREEMPT 
[   20.331238] Tainted: [B]=BAD_PAGE, [N]=TEST
[   20.331294] Hardware name: linux,dummy-virt (DT)
[   20.331361] Call trace:
[   20.331870]  show_stack+0x20/0x38 (C)
[   20.332056]  dump_stack_lvl+0x8c/0xd0
[   20.332305]  print_report+0x118/0x608
[   20.332484]  kasan_report+0xdc/0x128
[   20.332698]  kasan_check_range+0x100/0x1a8
[   20.332922]  __asan_memset+0x34/0x78
[   20.333093]  kmalloc_oob_in_memset+0x144/0x2d0
[   20.333282]  kunit_try_run_case+0x170/0x3f0
[   20.333471]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   20.333907]  kthread+0x328/0x630
[   20.334000]  ret_from_fork+0x10/0x20
[   20.334124] 
[   20.334162] Allocated by task 180:
[   20.334218]  kasan_save_stack+0x3c/0x68
[   20.334547]  kasan_save_track+0x20/0x40
[   20.334675]  kasan_save_alloc_info+0x40/0x58
[   20.334749]  __kasan_kmalloc+0xd4/0xd8
[   20.334884]  __kmalloc_cache_noprof+0x16c/0x3c0
[   20.335075]  kmalloc_oob_in_memset+0xb0/0x2d0
[   20.335253]  kunit_try_run_case+0x170/0x3f0
[   20.335687]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   20.335926]  kthread+0x328/0x630
[   20.336007]  ret_from_fork+0x10/0x20
[   20.336314] 
[   20.336457] The buggy address belongs to the object at fff00000c6423600
[   20.336457]  which belongs to the cache kmalloc-128 of size 128
[   20.336627] The buggy address is located 0 bytes inside of
[   20.336627]  allocated 120-byte region [fff00000c6423600, fff00000c6423678)
[   20.337009] 
[   20.337085] The buggy address belongs to the physical page:
[   20.337157] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106423
[   20.337307] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   20.337413] page_type: f5(slab)
[   20.337498] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000
[   20.337606] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   20.337693] page dumped because: kasan: bad access detected
[   20.337763] 
[   20.337800] Memory state around the buggy address:
[   20.337867]  fff00000c6423500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   20.337962]  fff00000c6423580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   20.338168] >fff00000c6423600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   20.338395]                                                                 ^
[   20.338472]  fff00000c6423680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   20.338544]  fff00000c6423700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   20.338612] ==================================================================

[   11.181492] ==================================================================
[   11.182010] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_in_memset+0x15f/0x320
[   11.182403] Write of size 128 at addr ffff888101add700 by task kunit_try_catch/196
[   11.182859] 
[   11.183055] CPU: 0 UID: 0 PID: 196 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc2-next-20250618 #1 PREEMPT(voluntary) 
[   11.183105] Tainted: [B]=BAD_PAGE, [N]=TEST
[   11.183117] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   11.183137] Call Trace:
[   11.183149]  <TASK>
[   11.183164]  dump_stack_lvl+0x73/0xb0
[   11.183191]  print_report+0xd1/0x650
[   11.183224]  ? __virt_addr_valid+0x1db/0x2d0
[   11.183246]  ? kmalloc_oob_in_memset+0x15f/0x320
[   11.183266]  ? kasan_complete_mode_report_info+0x2a/0x200
[   11.183290]  ? kmalloc_oob_in_memset+0x15f/0x320
[   11.183311]  kasan_report+0x141/0x180
[   11.183331]  ? kmalloc_oob_in_memset+0x15f/0x320
[   11.183355]  kasan_check_range+0x10c/0x1c0
[   11.183377]  __asan_memset+0x27/0x50
[   11.183398]  kmalloc_oob_in_memset+0x15f/0x320
[   11.183419]  ? __pfx_kmalloc_oob_in_memset+0x10/0x10
[   11.183440]  ? __schedule+0x10cc/0x2b60
[   11.183461]  ? __pfx_read_tsc+0x10/0x10
[   11.183481]  ? ktime_get_ts64+0x86/0x230
[   11.183505]  kunit_try_run_case+0x1a5/0x480
[   11.183528]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.183549]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   11.183571]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   11.183592]  ? __kthread_parkme+0x82/0x180
[   11.183611]  ? preempt_count_sub+0x50/0x80
[   11.183634]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.183656]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.183677]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   11.183699]  kthread+0x337/0x6f0
[   11.183717]  ? trace_preempt_on+0x20/0xc0
[   11.183740]  ? __pfx_kthread+0x10/0x10
[   11.183760]  ? _raw_spin_unlock_irq+0x47/0x80
[   11.183778]  ? calculate_sigpending+0x7b/0xa0
[   11.183801]  ? __pfx_kthread+0x10/0x10
[   11.183822]  ret_from_fork+0x116/0x1d0
[   11.183839]  ? __pfx_kthread+0x10/0x10
[   11.183858]  ret_from_fork_asm+0x1a/0x30
[   11.183887]  </TASK>
[   11.183897] 
[   11.191044] Allocated by task 196:
[   11.191172]  kasan_save_stack+0x45/0x70
[   11.191320]  kasan_save_track+0x18/0x40
[   11.191448]  kasan_save_alloc_info+0x3b/0x50
[   11.191723]  __kasan_kmalloc+0xb7/0xc0
[   11.191909]  __kmalloc_cache_noprof+0x189/0x420
[   11.192118]  kmalloc_oob_in_memset+0xac/0x320
[   11.192354]  kunit_try_run_case+0x1a5/0x480
[   11.192555]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.192855]  kthread+0x337/0x6f0
[   11.193052]  ret_from_fork+0x116/0x1d0
[   11.193176]  ret_from_fork_asm+0x1a/0x30
[   11.193316] 
[   11.193379] The buggy address belongs to the object at ffff888101add700
[   11.193379]  which belongs to the cache kmalloc-128 of size 128
[   11.193844] The buggy address is located 0 bytes inside of
[   11.193844]  allocated 120-byte region [ffff888101add700, ffff888101add778)
[   11.194392] 
[   11.194477] The buggy address belongs to the physical page:
[   11.194759] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101add
[   11.194994] flags: 0x200000000000000(node=0|zone=2)
[   11.195148] page_type: f5(slab)
[   11.195466] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   11.195796] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   11.196120] page dumped because: kasan: bad access detected
[   11.196445] 
[   11.196709] Memory state around the buggy address:
[   11.196898]  ffff888101add600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.197110]  ffff888101add680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.197381] >ffff888101add700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   11.197975]                                                                 ^
[   11.198295]  ffff888101add780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.198528]  ffff888101add800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.198730] ==================================================================