Hay
Date
July 20, 2025, 11:12 p.m.

Environment
qemu-arm64
qemu-x86_64

[   16.219726] ==================================================================
[   16.219832] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x2ec/0x320
[   16.220144] Read of size 1 at addr fff00000c59ab8bf by task kunit_try_catch/138
[   16.220303] 
[   16.220449] CPU: 1 UID: 0 PID: 138 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7 #1 PREEMPT 
[   16.220603] Tainted: [B]=BAD_PAGE, [N]=TEST
[   16.220678] Hardware name: linux,dummy-virt (DT)
[   16.220716] Call trace:
[   16.220828]  show_stack+0x20/0x38 (C)
[   16.220908]  dump_stack_lvl+0x8c/0xd0
[   16.220954]  print_report+0x118/0x5d0
[   16.221007]  kasan_report+0xdc/0x128
[   16.221230]  __asan_report_load1_noabort+0x20/0x30
[   16.221324]  kmalloc_oob_left+0x2ec/0x320
[   16.221528]  kunit_try_run_case+0x170/0x3f0
[   16.221575]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   16.221627]  kthread+0x328/0x630
[   16.221668]  ret_from_fork+0x10/0x20
[   16.221715] 
[   16.221733] Allocated by task 24:
[   16.221760]  kasan_save_stack+0x3c/0x68
[   16.221847]  kasan_save_track+0x20/0x40
[   16.221884]  kasan_save_alloc_info+0x40/0x58
[   16.221932]  __kasan_kmalloc+0xd4/0xd8
[   16.221967]  __kmalloc_node_track_caller_noprof+0x194/0x4b8
[   16.222011]  kvasprintf+0xe0/0x180
[   16.222045]  __kthread_create_on_node+0x16c/0x350
[   16.222083]  kthread_create_on_node+0xe4/0x130
[   16.222119]  create_worker+0x380/0x6b8
[   16.222154]  worker_thread+0x808/0xf38
[   16.222187]  kthread+0x328/0x630
[   16.222219]  ret_from_fork+0x10/0x20
[   16.222253] 
[   16.222271] The buggy address belongs to the object at fff00000c59ab8a0
[   16.222271]  which belongs to the cache kmalloc-16 of size 16
[   16.222328] The buggy address is located 19 bytes to the right of
[   16.222328]  allocated 12-byte region [fff00000c59ab8a0, fff00000c59ab8ac)
[   16.222390] 
[   16.222427] The buggy address belongs to the physical page:
[   16.222464] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1059ab
[   16.222538] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   16.222586] page_type: f5(slab)
[   16.222624] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000
[   16.222702] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   16.222743] page dumped because: kasan: bad access detected
[   16.222772] 
[   16.222789] Memory state around the buggy address:
[   16.222819]  fff00000c59ab780: 00 02 fc fc 00 05 fc fc fa fb fc fc 00 02 fc fc
[   16.222861]  fff00000c59ab800: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   16.222912] >fff00000c59ab880: fa fb fc fc 00 04 fc fc 00 07 fc fc fc fc fc fc
[   16.222949]                                         ^
[   16.222981]  fff00000c59ab900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   16.223023]  fff00000c59ab980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   16.223059] ==================================================================

[   16.313842] ==================================================================
[   16.313934] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x2ec/0x320
[   16.313991] Read of size 1 at addr fff00000c1375adf by task kunit_try_catch/138
[   16.314041] 
[   16.314265] CPU: 1 UID: 0 PID: 138 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7 #1 PREEMPT 
[   16.314492] Tainted: [B]=BAD_PAGE, [N]=TEST
[   16.314678] Hardware name: linux,dummy-virt (DT)
[   16.314736] Call trace:
[   16.314831]  show_stack+0x20/0x38 (C)
[   16.314933]  dump_stack_lvl+0x8c/0xd0
[   16.315198]  print_report+0x118/0x5d0
[   16.315280]  kasan_report+0xdc/0x128
[   16.315528]  __asan_report_load1_noabort+0x20/0x30
[   16.315606]  kmalloc_oob_left+0x2ec/0x320
[   16.315805]  kunit_try_run_case+0x170/0x3f0
[   16.316044]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   16.316217]  kthread+0x328/0x630
[   16.316311]  ret_from_fork+0x10/0x20
[   16.316385] 
[   16.316524] Allocated by task 26:
[   16.316657]  kasan_save_stack+0x3c/0x68
[   16.316713]  kasan_save_track+0x20/0x40
[   16.316751]  kasan_save_alloc_info+0x40/0x58
[   16.316816]  __kasan_kmalloc+0xd4/0xd8
[   16.316988]  __kmalloc_node_track_caller_noprof+0x194/0x4b8
[   16.317186]  kstrdup+0x54/0xc8
[   16.317249]  devtmpfs_work_loop+0x6f8/0xa58
[   16.317413]  devtmpfsd+0x50/0x58
[   16.317500]  kthread+0x328/0x630
[   16.317653]  ret_from_fork+0x10/0x20
[   16.317743] 
[   16.317880] Freed by task 26:
[   16.317928]  kasan_save_stack+0x3c/0x68
[   16.317989]  kasan_save_track+0x20/0x40
[   16.318026]  kasan_save_free_info+0x4c/0x78
[   16.318302]  __kasan_slab_free+0x6c/0x98
[   16.318458]  kfree+0x214/0x3c8
[   16.318552]  devtmpfs_work_loop+0x804/0xa58
[   16.318707]  devtmpfsd+0x50/0x58
[   16.318763]  kthread+0x328/0x630
[   16.319048]  ret_from_fork+0x10/0x20
[   16.319253] 
[   16.319280] The buggy address belongs to the object at fff00000c1375ac0
[   16.319280]  which belongs to the cache kmalloc-16 of size 16
[   16.319366] The buggy address is located 15 bytes to the right of
[   16.319366]  allocated 16-byte region [fff00000c1375ac0, fff00000c1375ad0)
[   16.319658] 
[   16.319798] The buggy address belongs to the physical page:
[   16.319877] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101375
[   16.320044] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   16.320114] page_type: f5(slab)
[   16.320200] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000
[   16.320555] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   16.320641] page dumped because: kasan: bad access detected
[   16.320747] 
[   16.320820] Memory state around the buggy address:
[   16.320911]  fff00000c1375980: fa fb fc fc 00 01 fc fc fa fb fc fc fa fb fc fc
[   16.320968]  fff00000c1375a00: 00 07 fc fc fa fb fc fc fa fb fc fc 00 04 fc fc
[   16.321082] >fff00000c1375a80: fa fb fc fc fa fb fc fc fa fb fc fc 00 07 fc fc
[   16.321140]                                                     ^
[   16.321357]  fff00000c1375b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   16.321548]  fff00000c1375b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   16.321726] ==================================================================

[   12.032982] ==================================================================
[   12.033617] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x361/0x3c0
[   12.033966] Read of size 1 at addr ffff888101b1cbbf by task kunit_try_catch/156
[   12.034307] 
[   12.034453] CPU: 1 UID: 0 PID: 156 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7 #1 PREEMPT(voluntary) 
[   12.034499] Tainted: [B]=BAD_PAGE, [N]=TEST
[   12.034534] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   12.034556] Call Trace:
[   12.034570]  <TASK>
[   12.034589]  dump_stack_lvl+0x73/0xb0
[   12.034620]  print_report+0xd1/0x610
[   12.034642]  ? __virt_addr_valid+0x1db/0x2d0
[   12.034684]  ? kmalloc_oob_left+0x361/0x3c0
[   12.034704]  ? kasan_complete_mode_report_info+0x64/0x200
[   12.034726]  ? kmalloc_oob_left+0x361/0x3c0
[   12.034747]  kasan_report+0x141/0x180
[   12.034769]  ? kmalloc_oob_left+0x361/0x3c0
[   12.034795]  __asan_report_load1_noabort+0x18/0x20
[   12.034819]  kmalloc_oob_left+0x361/0x3c0
[   12.034840]  ? __pfx_kmalloc_oob_left+0x10/0x10
[   12.034862]  ? __schedule+0x10c6/0x2b60
[   12.034885]  ? __pfx_read_tsc+0x10/0x10
[   12.034906]  ? ktime_get_ts64+0x86/0x230
[   12.034932]  kunit_try_run_case+0x1a5/0x480
[   12.034974]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.034996]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   12.035019]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   12.035090]  ? __kthread_parkme+0x82/0x180
[   12.035112]  ? preempt_count_sub+0x50/0x80
[   12.035137]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.035161]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.035203]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   12.035226]  kthread+0x337/0x6f0
[   12.035245]  ? trace_preempt_on+0x20/0xc0
[   12.035269]  ? __pfx_kthread+0x10/0x10
[   12.035289]  ? _raw_spin_unlock_irq+0x47/0x80
[   12.035311]  ? calculate_sigpending+0x7b/0xa0
[   12.035334]  ? __pfx_kthread+0x10/0x10
[   12.035356]  ret_from_fork+0x116/0x1d0
[   12.035374]  ? __pfx_kthread+0x10/0x10
[   12.035394]  ret_from_fork_asm+0x1a/0x30
[   12.035439]  </TASK>
[   12.035451] 
[   12.043279] Allocated by task 1:
[   12.043424]  kasan_save_stack+0x45/0x70
[   12.043595]  kasan_save_track+0x18/0x40
[   12.043787]  kasan_save_alloc_info+0x3b/0x50
[   12.043999]  __kasan_kmalloc+0xb7/0xc0
[   12.044187]  __kmalloc_node_track_caller_noprof+0x1cb/0x500
[   12.044687]  kvasprintf+0xc5/0x150
[   12.044862]  __kthread_create_on_node+0x18b/0x3a0
[   12.045107]  kthread_create_on_node+0xab/0xe0
[   12.045354]  cryptomgr_notify+0x704/0x9f0
[   12.045631]  notifier_call_chain+0xcb/0x250
[   12.045838]  blocking_notifier_call_chain+0x64/0x90
[   12.046069]  crypto_alg_mod_lookup+0x21f/0x440
[   12.046354]  crypto_alloc_tfm_node+0xc5/0x1f0
[   12.046516]  crypto_alloc_sig+0x23/0x30
[   12.046655]  public_key_verify_signature+0x208/0x9f0
[   12.046825]  x509_check_for_self_signed+0x2cb/0x480
[   12.046990]  x509_cert_parse+0x59c/0x830
[   12.047258]  x509_key_preparse+0x68/0x8a0
[   12.047502]  asymmetric_key_preparse+0xb1/0x160
[   12.047742]  __key_create_or_update+0x43d/0xcc0
[   12.047975]  key_create_or_update+0x17/0x20
[   12.048193]  x509_load_certificate_list+0x174/0x200
[   12.048456]  regulatory_init_db+0xee/0x3a0
[   12.048763]  do_one_initcall+0xd8/0x370
[   12.048973]  kernel_init_freeable+0x420/0x6f0
[   12.049275]  kernel_init+0x23/0x1e0
[   12.049493]  ret_from_fork+0x116/0x1d0
[   12.049680]  ret_from_fork_asm+0x1a/0x30
[   12.049882] 
[   12.050017] Freed by task 0:
[   12.050190]  kasan_save_stack+0x45/0x70
[   12.050509]  kasan_save_track+0x18/0x40
[   12.050711]  kasan_save_free_info+0x3f/0x60
[   12.050917]  __kasan_slab_free+0x56/0x70
[   12.051058]  kfree+0x222/0x3f0
[   12.051180]  free_kthread_struct+0xeb/0x150
[   12.051327]  free_task+0xf3/0x130
[   12.051674]  __put_task_struct+0x1c8/0x480
[   12.051918]  delayed_put_task_struct+0x10a/0x150
[   12.052165]  rcu_core+0x66f/0x1c40
[   12.052365]  rcu_core_si+0x12/0x20
[   12.052574]  handle_softirqs+0x209/0x730
[   12.052843]  __irq_exit_rcu+0xc9/0x110
[   12.053143]  irq_exit_rcu+0x12/0x20
[   12.053302]  sysvec_apic_timer_interrupt+0x81/0x90
[   12.053545]  asm_sysvec_apic_timer_interrupt+0x1f/0x30
[   12.053805] 
[   12.053884] The buggy address belongs to the object at ffff888101b1cba0
[   12.053884]  which belongs to the cache kmalloc-16 of size 16
[   12.054351] The buggy address is located 15 bytes to the right of
[   12.054351]  allocated 16-byte region [ffff888101b1cba0, ffff888101b1cbb0)
[   12.055110] 
[   12.055216] The buggy address belongs to the physical page:
[   12.055459] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101b1c
[   12.055801] flags: 0x200000000000000(node=0|zone=2)
[   12.056041] page_type: f5(slab)
[   12.056232] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   12.056602] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   12.056937] page dumped because: kasan: bad access detected
[   12.057198] 
[   12.057291] Memory state around the buggy address:
[   12.057521]  ffff888101b1ca80: fa fb fc fc 00 02 fc fc 00 05 fc fc 00 02 fc fc
[   12.057827]  ffff888101b1cb00: 00 02 fc fc 00 02 fc fc 00 02 fc fc fa fb fc fc
[   12.058038] >ffff888101b1cb80: fa fb fc fc fa fb fc fc 00 07 fc fc fc fc fc fc
[   12.058242]                                         ^
[   12.058743]  ffff888101b1cc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.059365]  ffff888101b1cc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.060072] ==================================================================

[   12.134052] ==================================================================
[   12.134556] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x361/0x3c0
[   12.134926] Read of size 1 at addr ffff88810239737f by task kunit_try_catch/155
[   12.135242] 
[   12.135412] CPU: 0 UID: 0 PID: 155 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7 #1 PREEMPT(voluntary) 
[   12.135461] Tainted: [B]=BAD_PAGE, [N]=TEST
[   12.135490] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   12.135515] Call Trace:
[   12.135528]  <TASK>
[   12.135549]  dump_stack_lvl+0x73/0xb0
[   12.135581]  print_report+0xd1/0x610
[   12.135603]  ? __virt_addr_valid+0x1db/0x2d0
[   12.135627]  ? kmalloc_oob_left+0x361/0x3c0
[   12.135647]  ? kasan_complete_mode_report_info+0x2a/0x200
[   12.135668]  ? kmalloc_oob_left+0x361/0x3c0
[   12.135689]  kasan_report+0x141/0x180
[   12.135710]  ? kmalloc_oob_left+0x361/0x3c0
[   12.135734]  __asan_report_load1_noabort+0x18/0x20
[   12.135758]  kmalloc_oob_left+0x361/0x3c0
[   12.135780]  ? __pfx_kmalloc_oob_left+0x10/0x10
[   12.135801]  ? __schedule+0x10c6/0x2b60
[   12.135824]  ? __pfx_read_tsc+0x10/0x10
[   12.135863]  ? ktime_get_ts64+0x86/0x230
[   12.135888]  kunit_try_run_case+0x1a5/0x480
[   12.135913]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.135935]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   12.135958]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   12.135981]  ? __kthread_parkme+0x82/0x180
[   12.136001]  ? preempt_count_sub+0x50/0x80
[   12.136025]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.136048]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.136070]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   12.136093]  kthread+0x337/0x6f0
[   12.136112]  ? trace_preempt_on+0x20/0xc0
[   12.136135]  ? __pfx_kthread+0x10/0x10
[   12.136168]  ? _raw_spin_unlock_irq+0x47/0x80
[   12.136188]  ? calculate_sigpending+0x7b/0xa0
[   12.136212]  ? __pfx_kthread+0x10/0x10
[   12.136233]  ret_from_fork+0x116/0x1d0
[   12.136251]  ? __pfx_kthread+0x10/0x10
[   12.136271]  ret_from_fork_asm+0x1a/0x30
[   12.136319]  </TASK>
[   12.136336] 
[   12.145047] Allocated by task 1:
[   12.145400]  kasan_save_stack+0x45/0x70
[   12.145778]  kasan_save_track+0x18/0x40
[   12.146154]  kasan_save_alloc_info+0x3b/0x50
[   12.146432]  __kasan_kmalloc+0xb7/0xc0
[   12.146569]  __kmalloc_node_track_caller_noprof+0x1cb/0x500
[   12.146752]  kvasprintf+0xc5/0x150
[   12.146983]  __kthread_create_on_node+0x18b/0x3a0
[   12.147513]  kthread_create_on_node+0xab/0xe0
[   12.147933]  create_worker+0x3e5/0x7b0
[   12.148416]  alloc_unbound_pwq+0x8ea/0xdb0
[   12.148815]  apply_wqattrs_prepare+0x332/0xd20
[   12.149316]  apply_workqueue_attrs_locked+0x4d/0xa0
[   12.149782]  alloc_workqueue+0xcc7/0x1ad0
[   12.150218]  latency_fsnotify_init+0x1b/0x50
[   12.150663]  do_one_initcall+0xd8/0x370
[   12.151074]  kernel_init_freeable+0x420/0x6f0
[   12.151530]  kernel_init+0x23/0x1e0
[   12.151853]  ret_from_fork+0x116/0x1d0
[   12.152194]  ret_from_fork_asm+0x1a/0x30
[   12.152414] 
[   12.152589] The buggy address belongs to the object at ffff888102397360
[   12.152589]  which belongs to the cache kmalloc-16 of size 16
[   12.153517] The buggy address is located 18 bytes to the right of
[   12.153517]  allocated 13-byte region [ffff888102397360, ffff88810239736d)
[   12.154686] 
[   12.154767] The buggy address belongs to the physical page:
[   12.154956] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102397
[   12.155239] flags: 0x200000000000000(node=0|zone=2)
[   12.155410] page_type: f5(slab)
[   12.155612] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   12.156009] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   12.156283] page dumped because: kasan: bad access detected
[   12.156626] 
[   12.156707] Memory state around the buggy address:
[   12.156886]  ffff888102397200: 00 00 fc fc 00 06 fc fc 00 06 fc fc 00 00 fc fc
[   12.157128]  ffff888102397280: 00 02 fc fc 00 02 fc fc 00 06 fc fc 00 06 fc fc
[   12.157613] >ffff888102397300: fa fb fc fc fa fb fc fc fa fb fc fc 00 05 fc fc
[   12.157951]                                                                 ^
[   12.158240]  ffff888102397380: 00 07 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.158629]  ffff888102397400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.158922] ==================================================================