Hay
Date
July 17, 2025, 10:12 a.m.

Environment
qemu-arm64
qemu-x86_64

[   32.460230] ==================================================================
[   32.460281] BUG: KASAN: slab-out-of-bounds in strncpy_from_user+0x3c/0x2a0
[   32.460338] Write of size 121 at addr fff00000c98f2e00 by task kunit_try_catch/316
[   32.460391] 
[   32.460423] CPU: 0 UID: 0 PID: 316 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6-next-20250717 #1 PREEMPT 
[   32.460506] Tainted: [B]=BAD_PAGE, [N]=TEST
[   32.460536] Hardware name: linux,dummy-virt (DT)
[   32.460569] Call trace:
[   32.460591]  show_stack+0x20/0x38 (C)
[   32.460639]  dump_stack_lvl+0x8c/0xd0
[   32.460689]  print_report+0x118/0x5d0
[   32.460733]  kasan_report+0xdc/0x128
[   32.460779]  kasan_check_range+0x100/0x1a8
[   32.460826]  __kasan_check_write+0x20/0x30
[   32.460874]  strncpy_from_user+0x3c/0x2a0
[   32.460923]  copy_user_test_oob+0x5c0/0xec8
[   32.460973]  kunit_try_run_case+0x170/0x3f0
[   32.461019]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.461714]  kthread+0x328/0x630
[   32.461834]  ret_from_fork+0x10/0x20
[   32.461941] 
[   32.462077] Allocated by task 316:
[   32.462126]  kasan_save_stack+0x3c/0x68
[   32.462318]  kasan_save_track+0x20/0x40
[   32.462390]  kasan_save_alloc_info+0x40/0x58
[   32.462455]  __kasan_kmalloc+0xd4/0xd8
[   32.462531]  __kmalloc_noprof+0x198/0x4c8
[   32.462645]  kunit_kmalloc_array+0x34/0x88
[   32.462789]  copy_user_test_oob+0xac/0xec8
[   32.462968]  kunit_try_run_case+0x170/0x3f0
[   32.463015]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.463318]  kthread+0x328/0x630
[   32.463418]  ret_from_fork+0x10/0x20
[   32.463478] 
[   32.463713] The buggy address belongs to the object at fff00000c98f2e00
[   32.463713]  which belongs to the cache kmalloc-128 of size 128
[   32.463825] The buggy address is located 0 bytes inside of
[   32.463825]  allocated 120-byte region [fff00000c98f2e00, fff00000c98f2e78)
[   32.464005] 
[   32.464083] The buggy address belongs to the physical page:
[   32.464239] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1098f2
[   32.464297] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   32.464538] page_type: f5(slab)
[   32.464702] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000
[   32.464814] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   32.465097] page dumped because: kasan: bad access detected
[   32.465238] 
[   32.465274] Memory state around the buggy address:
[   32.465310]  fff00000c98f2d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   32.465466]  fff00000c98f2d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.465632] >fff00000c98f2e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   32.465736]                                                                 ^
[   32.465826]  fff00000c98f2e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.466086]  fff00000c98f2f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.466145] ==================================================================
[   32.467393] ==================================================================
[   32.467664] BUG: KASAN: slab-out-of-bounds in strncpy_from_user+0x270/0x2a0
[   32.467729] Write of size 1 at addr fff00000c98f2e78 by task kunit_try_catch/316
[   32.467836] 
[   32.467870] CPU: 0 UID: 0 PID: 316 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6-next-20250717 #1 PREEMPT 
[   32.467958] Tainted: [B]=BAD_PAGE, [N]=TEST
[   32.467985] Hardware name: linux,dummy-virt (DT)
[   32.468018] Call trace:
[   32.468201]  show_stack+0x20/0x38 (C)
[   32.468279]  dump_stack_lvl+0x8c/0xd0
[   32.468400]  print_report+0x118/0x5d0
[   32.468466]  kasan_report+0xdc/0x128
[   32.468635]  __asan_report_store1_noabort+0x20/0x30
[   32.468728]  strncpy_from_user+0x270/0x2a0
[   32.468814]  copy_user_test_oob+0x5c0/0xec8
[   32.468997]  kunit_try_run_case+0x170/0x3f0
[   32.469085]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.469147]  kthread+0x328/0x630
[   32.469190]  ret_from_fork+0x10/0x20
[   32.469239] 
[   32.469259] Allocated by task 316:
[   32.469495]  kasan_save_stack+0x3c/0x68
[   32.469681]  kasan_save_track+0x20/0x40
[   32.469776]  kasan_save_alloc_info+0x40/0x58
[   32.470076]  __kasan_kmalloc+0xd4/0xd8
[   32.470114]  __kmalloc_noprof+0x198/0x4c8
[   32.470246]  kunit_kmalloc_array+0x34/0x88
[   32.470343]  copy_user_test_oob+0xac/0xec8
[   32.470486]  kunit_try_run_case+0x170/0x3f0
[   32.470526]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.470571]  kthread+0x328/0x630
[   32.470613]  ret_from_fork+0x10/0x20
[   32.470708] 
[   32.470731] The buggy address belongs to the object at fff00000c98f2e00
[   32.470731]  which belongs to the cache kmalloc-128 of size 128
[   32.470811] The buggy address is located 0 bytes to the right of
[   32.470811]  allocated 120-byte region [fff00000c98f2e00, fff00000c98f2e78)
[   32.470886] 
[   32.470909] The buggy address belongs to the physical page:
[   32.470954] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1098f2
[   32.471009] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   32.471068] page_type: f5(slab)
[   32.471109] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000
[   32.471613] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   32.471682] page dumped because: kasan: bad access detected
[   32.471914] 
[   32.471987] Memory state around the buggy address:
[   32.472154]  fff00000c98f2d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   32.472228]  fff00000c98f2d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.472294] >fff00000c98f2e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   32.472334]                                                                 ^
[   32.472662]  fff00000c98f2e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.472826]  fff00000c98f2f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.473011] ==================================================================

[   29.728406] ==================================================================
[   29.728918] BUG: KASAN: slab-out-of-bounds in strncpy_from_user+0x1a5/0x1d0
[   29.729565] Write of size 1 at addr ffff888104588678 by task kunit_try_catch/334
[   29.730219] 
[   29.730425] CPU: 1 UID: 0 PID: 334 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) 
[   29.730476] Tainted: [B]=BAD_PAGE, [N]=TEST
[   29.730488] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   29.730520] Call Trace:
[   29.730534]  <TASK>
[   29.730551]  dump_stack_lvl+0x73/0xb0
[   29.730592]  print_report+0xd1/0x610
[   29.730615]  ? __virt_addr_valid+0x1db/0x2d0
[   29.730638]  ? strncpy_from_user+0x1a5/0x1d0
[   29.730660]  ? kasan_complete_mode_report_info+0x2a/0x200
[   29.730688]  ? strncpy_from_user+0x1a5/0x1d0
[   29.730711]  kasan_report+0x141/0x180
[   29.730733]  ? strncpy_from_user+0x1a5/0x1d0
[   29.730760]  __asan_report_store1_noabort+0x1b/0x30
[   29.730785]  strncpy_from_user+0x1a5/0x1d0
[   29.730810]  copy_user_test_oob+0x760/0x10f0
[   29.730836]  ? __pfx_copy_user_test_oob+0x10/0x10
[   29.730859]  ? finish_task_switch.isra.0+0x153/0x700
[   29.730880]  ? __switch_to+0x47/0xf80
[   29.730906]  ? __schedule+0x10c6/0x2b60
[   29.730928]  ? __pfx_read_tsc+0x10/0x10
[   29.730949]  ? ktime_get_ts64+0x86/0x230
[   29.730974]  kunit_try_run_case+0x1a5/0x480
[   29.730999]  ? __pfx_kunit_try_run_case+0x10/0x10
[   29.731021]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   29.731044]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   29.731068]  ? __kthread_parkme+0x82/0x180
[   29.731103]  ? preempt_count_sub+0x50/0x80
[   29.731125]  ? __pfx_kunit_try_run_case+0x10/0x10
[   29.731149]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   29.731172]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   29.731196]  kthread+0x337/0x6f0
[   29.731216]  ? trace_preempt_on+0x20/0xc0
[   29.731239]  ? __pfx_kthread+0x10/0x10
[   29.731278]  ? _raw_spin_unlock_irq+0x47/0x80
[   29.731300]  ? calculate_sigpending+0x7b/0xa0
[   29.731323]  ? __pfx_kthread+0x10/0x10
[   29.731344]  ret_from_fork+0x116/0x1d0
[   29.731364]  ? __pfx_kthread+0x10/0x10
[   29.731384]  ret_from_fork_asm+0x1a/0x30
[   29.731415]  </TASK>
[   29.731426] 
[   29.743044] Allocated by task 334:
[   29.743411]  kasan_save_stack+0x45/0x70
[   29.743774]  kasan_save_track+0x18/0x40
[   29.744135]  kasan_save_alloc_info+0x3b/0x50
[   29.744553]  __kasan_kmalloc+0xb7/0xc0
[   29.744816]  __kmalloc_noprof+0x1ca/0x510
[   29.744963]  kunit_kmalloc_array+0x25/0x60
[   29.745211]  copy_user_test_oob+0xab/0x10f0
[   29.745623]  kunit_try_run_case+0x1a5/0x480
[   29.746007]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   29.746428]  kthread+0x337/0x6f0
[   29.746590]  ret_from_fork+0x116/0x1d0
[   29.746957]  ret_from_fork_asm+0x1a/0x30
[   29.747123] 
[   29.747189] The buggy address belongs to the object at ffff888104588600
[   29.747189]  which belongs to the cache kmalloc-128 of size 128
[   29.748234] The buggy address is located 0 bytes to the right of
[   29.748234]  allocated 120-byte region [ffff888104588600, ffff888104588678)
[   29.748828] 
[   29.748897] The buggy address belongs to the physical page:
[   29.749063] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104588
[   29.749410] flags: 0x200000000000000(node=0|zone=2)
[   29.749844] page_type: f5(slab)
[   29.750171] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   29.750836] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   29.751492] page dumped because: kasan: bad access detected
[   29.751960] 
[   29.752117] Memory state around the buggy address:
[   29.752564]  ffff888104588500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   29.753054]  ffff888104588580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   29.753304] >ffff888104588600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   29.753920]                                                                 ^
[   29.754552]  ffff888104588680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   29.755020]  ffff888104588700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   29.755490] ==================================================================
[   29.699518] ==================================================================
[   29.700200] BUG: KASAN: slab-out-of-bounds in strncpy_from_user+0x2e/0x1d0
[   29.700850] Write of size 121 at addr ffff888104588600 by task kunit_try_catch/334
[   29.701520] 
[   29.701693] CPU: 1 UID: 0 PID: 334 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) 
[   29.701754] Tainted: [B]=BAD_PAGE, [N]=TEST
[   29.701767] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   29.701789] Call Trace:
[   29.701805]  <TASK>
[   29.701821]  dump_stack_lvl+0x73/0xb0
[   29.701860]  print_report+0xd1/0x610
[   29.701884]  ? __virt_addr_valid+0x1db/0x2d0
[   29.701907]  ? strncpy_from_user+0x2e/0x1d0
[   29.701943]  ? kasan_complete_mode_report_info+0x2a/0x200
[   29.701969]  ? strncpy_from_user+0x2e/0x1d0
[   29.701993]  kasan_report+0x141/0x180
[   29.702015]  ? strncpy_from_user+0x2e/0x1d0
[   29.702043]  kasan_check_range+0x10c/0x1c0
[   29.702066]  __kasan_check_write+0x18/0x20
[   29.702098]  strncpy_from_user+0x2e/0x1d0
[   29.702119]  ? __kasan_check_read+0x15/0x20
[   29.702145]  copy_user_test_oob+0x760/0x10f0
[   29.702170]  ? __pfx_copy_user_test_oob+0x10/0x10
[   29.702193]  ? finish_task_switch.isra.0+0x153/0x700
[   29.702214]  ? __switch_to+0x47/0xf80
[   29.702240]  ? __schedule+0x10c6/0x2b60
[   29.702283]  ? __pfx_read_tsc+0x10/0x10
[   29.702304]  ? ktime_get_ts64+0x86/0x230
[   29.702328]  kunit_try_run_case+0x1a5/0x480
[   29.702352]  ? __pfx_kunit_try_run_case+0x10/0x10
[   29.702375]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   29.702398]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   29.702422]  ? __kthread_parkme+0x82/0x180
[   29.702447]  ? preempt_count_sub+0x50/0x80
[   29.702470]  ? __pfx_kunit_try_run_case+0x10/0x10
[   29.702494]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   29.702517]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   29.702540]  kthread+0x337/0x6f0
[   29.702560]  ? trace_preempt_on+0x20/0xc0
[   29.702583]  ? __pfx_kthread+0x10/0x10
[   29.702603]  ? _raw_spin_unlock_irq+0x47/0x80
[   29.702625]  ? calculate_sigpending+0x7b/0xa0
[   29.702648]  ? __pfx_kthread+0x10/0x10
[   29.702669]  ret_from_fork+0x116/0x1d0
[   29.702688]  ? __pfx_kthread+0x10/0x10
[   29.702709]  ret_from_fork_asm+0x1a/0x30
[   29.702741]  </TASK>
[   29.702752] 
[   29.715441] Allocated by task 334:
[   29.715777]  kasan_save_stack+0x45/0x70
[   29.716144]  kasan_save_track+0x18/0x40
[   29.716515]  kasan_save_alloc_info+0x3b/0x50
[   29.716916]  __kasan_kmalloc+0xb7/0xc0
[   29.717293]  __kmalloc_noprof+0x1ca/0x510
[   29.717669]  kunit_kmalloc_array+0x25/0x60
[   29.717972]  copy_user_test_oob+0xab/0x10f0
[   29.718200]  kunit_try_run_case+0x1a5/0x480
[   29.718605]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   29.718938]  kthread+0x337/0x6f0
[   29.719052]  ret_from_fork+0x116/0x1d0
[   29.719186]  ret_from_fork_asm+0x1a/0x30
[   29.719472] 
[   29.719623] The buggy address belongs to the object at ffff888104588600
[   29.719623]  which belongs to the cache kmalloc-128 of size 128
[   29.720696] The buggy address is located 0 bytes inside of
[   29.720696]  allocated 120-byte region [ffff888104588600, ffff888104588678)
[   29.721678] 
[   29.721747] The buggy address belongs to the physical page:
[   29.721913] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104588
[   29.722164] flags: 0x200000000000000(node=0|zone=2)
[   29.722504] page_type: f5(slab)
[   29.722806] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   29.723476] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   29.724122] page dumped because: kasan: bad access detected
[   29.724616] 
[   29.724781] Memory state around the buggy address:
[   29.725217]  ffff888104588500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   29.725841]  ffff888104588580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   29.726162] >ffff888104588600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   29.726775]                                                                 ^
[   29.727248]  ffff888104588680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   29.727604]  ffff888104588700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   29.727811] ==================================================================