Hay
Date
July 4, 2025, 11:11 p.m.

Environment
qemu-arm64
qemu-x86_64

[   18.446047] ==================================================================
[   18.446130] BUG: KASAN: slab-out-of-bounds in kmem_cache_oob+0x344/0x430
[   18.446188] Read of size 1 at addr fff00000c76ef0c8 by task kunit_try_catch/207
[   18.446237] 
[   18.446270] CPU: 1 UID: 0 PID: 207 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT 
[   18.446367] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.446621] Hardware name: linux,dummy-virt (DT)
[   18.446676] Call trace:
[   18.446715]  show_stack+0x20/0x38 (C)
[   18.446783]  dump_stack_lvl+0x8c/0xd0
[   18.446848]  print_report+0x118/0x608
[   18.446901]  kasan_report+0xdc/0x128
[   18.447046]  __asan_report_load1_noabort+0x20/0x30
[   18.447105]  kmem_cache_oob+0x344/0x430
[   18.447150]  kunit_try_run_case+0x170/0x3f0
[   18.447199]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.447251]  kthread+0x328/0x630
[   18.447295]  ret_from_fork+0x10/0x20
[   18.447342] 
[   18.447359] Allocated by task 207:
[   18.447388]  kasan_save_stack+0x3c/0x68
[   18.447427]  kasan_save_track+0x20/0x40
[   18.447464]  kasan_save_alloc_info+0x40/0x58
[   18.447504]  __kasan_slab_alloc+0xa8/0xb0
[   18.447541]  kmem_cache_alloc_noprof+0x10c/0x398
[   18.447580]  kmem_cache_oob+0x12c/0x430
[   18.447617]  kunit_try_run_case+0x170/0x3f0
[   18.447654]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.447696]  kthread+0x328/0x630
[   18.447728]  ret_from_fork+0x10/0x20
[   18.447762] 
[   18.447782] The buggy address belongs to the object at fff00000c76ef000
[   18.447782]  which belongs to the cache test_cache of size 200
[   18.447850] The buggy address is located 0 bytes to the right of
[   18.447850]  allocated 200-byte region [fff00000c76ef000, fff00000c76ef0c8)
[   18.447920] 
[   18.447939] The buggy address belongs to the physical page:
[   18.447970] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1076ef
[   18.448024] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   18.448073] page_type: f5(slab)
[   18.448261] raw: 0bfffe0000000000 fff00000c46f58c0 dead000000000122 0000000000000000
[   18.448315] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000
[   18.448359] page dumped because: kasan: bad access detected
[   18.448392] 
[   18.448543] Memory state around the buggy address:
[   18.448621]  fff00000c76eef80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.448714]  fff00000c76ef000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   18.448792] >fff00000c76ef080: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
[   18.448874]                                               ^
[   18.448952]  fff00000c76ef100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.448995]  fff00000c76ef180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.449034] ==================================================================

[   12.636510] ==================================================================
[   12.636984] BUG: KASAN: slab-out-of-bounds in kmem_cache_oob+0x402/0x530
[   12.637373] Read of size 1 at addr ffff8881039870c8 by task kunit_try_catch/224
[   12.637747] 
[   12.637847] CPU: 1 UID: 0 PID: 224 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   12.637907] Tainted: [B]=BAD_PAGE, [N]=TEST
[   12.637919] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   12.638279] Call Trace:
[   12.638296]  <TASK>
[   12.638360]  dump_stack_lvl+0x73/0xb0
[   12.638397]  print_report+0xd1/0x650
[   12.638428]  ? __virt_addr_valid+0x1db/0x2d0
[   12.638454]  ? kmem_cache_oob+0x402/0x530
[   12.638476]  ? kasan_complete_mode_report_info+0x2a/0x200
[   12.638497]  ? kmem_cache_oob+0x402/0x530
[   12.638518]  kasan_report+0x141/0x180
[   12.638539]  ? kmem_cache_oob+0x402/0x530
[   12.638565]  __asan_report_load1_noabort+0x18/0x20
[   12.638588]  kmem_cache_oob+0x402/0x530
[   12.638608]  ? trace_hardirqs_on+0x37/0xe0
[   12.638630]  ? __pfx_kmem_cache_oob+0x10/0x10
[   12.638653]  ? __kasan_check_write+0x18/0x20
[   12.638672]  ? queued_spin_lock_slowpath+0x116/0xb40
[   12.638696]  ? irqentry_exit+0x2a/0x60
[   12.638718]  ? trace_hardirqs_on+0x37/0xe0
[   12.638738]  ? __pfx_read_tsc+0x10/0x10
[   12.638759]  ? ktime_get_ts64+0x86/0x230
[   12.638783]  kunit_try_run_case+0x1a5/0x480
[   12.638809]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.638831]  ? queued_spin_lock_slowpath+0x116/0xb40
[   12.638851]  ? __kthread_parkme+0x82/0x180
[   12.638872]  ? preempt_count_sub+0x50/0x80
[   12.638894]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.638916]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.638936]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   12.638957]  kthread+0x337/0x6f0
[   12.638976]  ? trace_preempt_on+0x20/0xc0
[   12.638996]  ? __pfx_kthread+0x10/0x10
[   12.639015]  ? _raw_spin_unlock_irq+0x47/0x80
[   12.639034]  ? calculate_sigpending+0x7b/0xa0
[   12.639057]  ? __pfx_kthread+0x10/0x10
[   12.639077]  ret_from_fork+0x116/0x1d0
[   12.639094]  ? __pfx_kthread+0x10/0x10
[   12.639113]  ret_from_fork_asm+0x1a/0x30
[   12.639143]  </TASK>
[   12.639155] 
[   12.650509] Allocated by task 224:
[   12.650722]  kasan_save_stack+0x45/0x70
[   12.650928]  kasan_save_track+0x18/0x40
[   12.651108]  kasan_save_alloc_info+0x3b/0x50
[   12.651713]  __kasan_slab_alloc+0x91/0xa0
[   12.651996]  kmem_cache_alloc_noprof+0x123/0x3f0
[   12.652435]  kmem_cache_oob+0x157/0x530
[   12.652733]  kunit_try_run_case+0x1a5/0x480
[   12.653110]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.653564]  kthread+0x337/0x6f0
[   12.653840]  ret_from_fork+0x116/0x1d0
[   12.654158]  ret_from_fork_asm+0x1a/0x30
[   12.654602] 
[   12.654862] The buggy address belongs to the object at ffff888103987000
[   12.654862]  which belongs to the cache test_cache of size 200
[   12.655720] The buggy address is located 0 bytes to the right of
[   12.655720]  allocated 200-byte region [ffff888103987000, ffff8881039870c8)
[   12.656659] 
[   12.656745] The buggy address belongs to the physical page:
[   12.656990] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103987
[   12.657605] flags: 0x200000000000000(node=0|zone=2)
[   12.658011] page_type: f5(slab)
[   12.658534] raw: 0200000000000000 ffff888101d0c500 dead000000000122 0000000000000000
[   12.658870] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000
[   12.659174] page dumped because: kasan: bad access detected
[   12.659789] 
[   12.659891] Memory state around the buggy address:
[   12.660104]  ffff888103986f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.660775]  ffff888103987000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   12.661624] >ffff888103987080: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
[   12.661883]                                               ^
[   12.662144]  ffff888103987100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.662431]  ffff888103987180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.662771] ==================================================================