Hay
Date
July 19, 2025, 11:11 a.m.

Environment
qemu-arm64
qemu-x86_64

[   14.956321] ==================================================================
[   14.956382] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x2ec/0x320
[   14.956435] Read of size 1 at addr fff00000c5f9c3ff by task kunit_try_catch/139
[   14.956484] 
[   14.956514] CPU: 1 UID: 0 PID: 139 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT 
[   14.956610] Tainted: [B]=BAD_PAGE, [N]=TEST
[   14.956637] Hardware name: linux,dummy-virt (DT)
[   14.956824] Call trace:
[   14.956865]  show_stack+0x20/0x38 (C)
[   14.956915]  dump_stack_lvl+0x8c/0xd0
[   14.956961]  print_report+0x118/0x5d0
[   14.957146]  kasan_report+0xdc/0x128
[   14.957360]  __asan_report_load1_noabort+0x20/0x30
[   14.957430]  kmalloc_oob_left+0x2ec/0x320
[   14.957476]  kunit_try_run_case+0x170/0x3f0
[   14.957523]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   14.957596]  kthread+0x328/0x630
[   14.957857]  ret_from_fork+0x10/0x20
[   14.957994] 
[   14.958217] Allocated by task 24:
[   14.958309]  kasan_save_stack+0x3c/0x68
[   14.958520]  kasan_save_track+0x20/0x40
[   14.958581]  kasan_save_alloc_info+0x40/0x58
[   14.958623]  __kasan_kmalloc+0xd4/0xd8
[   14.958664]  __kmalloc_node_track_caller_noprof+0x194/0x4b8
[   14.958874]  kvasprintf+0xe0/0x180
[   14.959075]  __kthread_create_on_node+0x16c/0x350
[   14.959236]  kthread_create_on_node+0xe4/0x130
[   14.959366]  create_worker+0x380/0x6b8
[   14.959446]  worker_thread+0x808/0xf38
[   14.959716]  kthread+0x328/0x630
[   14.960005]  ret_from_fork+0x10/0x20
[   14.960080] 
[   14.960129] The buggy address belongs to the object at fff00000c5f9c3e0
[   14.960129]  which belongs to the cache kmalloc-16 of size 16
[   14.960671] The buggy address is located 19 bytes to the right of
[   14.960671]  allocated 12-byte region [fff00000c5f9c3e0, fff00000c5f9c3ec)
[   14.960970] 
[   14.961051] The buggy address belongs to the physical page:
[   14.961099] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105f9c
[   14.961299] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   14.961360] page_type: f5(slab)
[   14.961400] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000
[   14.961496] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   14.961548] page dumped because: kasan: bad access detected
[   14.961587] 
[   14.961605] Memory state around the buggy address:
[   14.961650]  fff00000c5f9c280: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   14.961692]  fff00000c5f9c300: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   14.962210] >fff00000c5f9c380: fa fb fc fc fa fb fc fc fa fb fc fc 00 04 fc fc
[   14.962320]                                                                 ^
[   14.962396]  fff00000c5f9c400: 00 07 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   14.962487]  fff00000c5f9c480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   14.962598] ==================================================================

[   11.415307] ==================================================================
[   11.415817] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x361/0x3c0
[   11.416240] Read of size 1 at addr ffff8881016429bf by task kunit_try_catch/156
[   11.416557] 
[   11.416678] CPU: 0 UID: 0 PID: 156 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   11.416724] Tainted: [B]=BAD_PAGE, [N]=TEST
[   11.416745] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   11.416768] Call Trace:
[   11.416780]  <TASK>
[   11.416797]  dump_stack_lvl+0x73/0xb0
[   11.416842]  print_report+0xd1/0x610
[   11.416864]  ? __virt_addr_valid+0x1db/0x2d0
[   11.416887]  ? kmalloc_oob_left+0x361/0x3c0
[   11.416918]  ? kasan_complete_mode_report_info+0x64/0x200
[   11.416940]  ? kmalloc_oob_left+0x361/0x3c0
[   11.416960]  kasan_report+0x141/0x180
[   11.416991]  ? kmalloc_oob_left+0x361/0x3c0
[   11.417016]  __asan_report_load1_noabort+0x18/0x20
[   11.417052]  kmalloc_oob_left+0x361/0x3c0
[   11.417073]  ? __pfx_kmalloc_oob_left+0x10/0x10
[   11.417094]  ? __schedule+0x10cc/0x2b60
[   11.417116]  ? __pfx_read_tsc+0x10/0x10
[   11.417136]  ? ktime_get_ts64+0x86/0x230
[   11.417161]  kunit_try_run_case+0x1a5/0x480
[   11.417185]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.417207]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   11.417230]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   11.417252]  ? __kthread_parkme+0x82/0x180
[   11.417297]  ? preempt_count_sub+0x50/0x80
[   11.417321]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.417354]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.417377]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   11.417400]  kthread+0x337/0x6f0
[   11.417418]  ? trace_preempt_on+0x20/0xc0
[   11.417441]  ? __pfx_kthread+0x10/0x10
[   11.417468]  ? _raw_spin_unlock_irq+0x47/0x80
[   11.417488]  ? calculate_sigpending+0x7b/0xa0
[   11.417527]  ? __pfx_kthread+0x10/0x10
[   11.417547]  ret_from_fork+0x116/0x1d0
[   11.417565]  ? __pfx_kthread+0x10/0x10
[   11.417584]  ret_from_fork_asm+0x1a/0x30
[   11.417614]  </TASK>
[   11.417639] 
[   11.429014] Allocated by task 1:
[   11.429345]  kasan_save_stack+0x45/0x70
[   11.429868]  kasan_save_track+0x18/0x40
[   11.430533]  kasan_save_alloc_info+0x3b/0x50
[   11.430732]  __kasan_kmalloc+0xb7/0xc0
[   11.430870]  __kmalloc_node_track_caller_noprof+0x1cb/0x500
[   11.431060]  kvasprintf+0xc5/0x150
[   11.431185]  __kthread_create_on_node+0x18b/0x3a0
[   11.431341]  kthread_create_on_node+0xab/0xe0
[   11.431487]  cryptomgr_notify+0x704/0x9f0
[   11.431641]  notifier_call_chain+0xcb/0x250
[   11.431784]  blocking_notifier_call_chain+0x64/0x90
[   11.431943]  crypto_alg_mod_lookup+0x21f/0x440
[   11.432092]  crypto_alloc_tfm_node+0xc5/0x1f0
[   11.432241]  crypto_alloc_sig+0x23/0x30
[   11.432375]  public_key_verify_signature+0x208/0x9f0
[   11.432622]  x509_check_for_self_signed+0x2cb/0x480
[   11.433049]  x509_cert_parse+0x59c/0x830
[   11.433323]  x509_key_preparse+0x68/0x8a0
[   11.433469]  asymmetric_key_preparse+0xb1/0x160
[   11.433690]  __key_create_or_update+0x43d/0xcc0
[   11.434079]  key_create_or_update+0x17/0x20
[   11.434640]  x509_load_certificate_list+0x174/0x200
[   11.435395]  regulatory_init_db+0xee/0x3a0
[   11.435947]  do_one_initcall+0xd8/0x370
[   11.436235]  kernel_init_freeable+0x420/0x6f0
[   11.436683]  kernel_init+0x23/0x1e0
[   11.436814]  ret_from_fork+0x116/0x1d0
[   11.436946]  ret_from_fork_asm+0x1a/0x30
[   11.437152] 
[   11.437434] Freed by task 0:
[   11.437873]  kasan_save_stack+0x45/0x70
[   11.438311]  kasan_save_track+0x18/0x40
[   11.438797]  kasan_save_free_info+0x3f/0x60
[   11.439335]  __kasan_slab_free+0x56/0x70
[   11.439951]  kfree+0x222/0x3f0
[   11.440372]  free_kthread_struct+0xeb/0x150
[   11.440536]  free_task+0xf3/0x130
[   11.440659]  __put_task_struct+0x1c8/0x480
[   11.440800]  delayed_put_task_struct+0x10a/0x150
[   11.440956]  rcu_core+0x66f/0x1c40
[   11.441163]  rcu_core_si+0x12/0x20
[   11.441380]  handle_softirqs+0x209/0x730
[   11.441528]  __irq_exit_rcu+0xc9/0x110
[   11.441904]  irq_exit_rcu+0x12/0x20
[   11.442034]  sysvec_apic_timer_interrupt+0x81/0x90
[   11.442266]  asm_sysvec_apic_timer_interrupt+0x1f/0x30
[   11.442691] 
[   11.443076] The buggy address belongs to the object at ffff8881016429a0
[   11.443076]  which belongs to the cache kmalloc-16 of size 16
[   11.444655] The buggy address is located 15 bytes to the right of
[   11.444655]  allocated 16-byte region [ffff8881016429a0, ffff8881016429b0)
[   11.446031] 
[   11.446301] The buggy address belongs to the physical page:
[   11.446989] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101642
[   11.447641] flags: 0x200000000000000(node=0|zone=2)
[   11.447815] page_type: f5(slab)
[   11.447940] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   11.448205] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   11.448693] page dumped because: kasan: bad access detected
[   11.448906] 
[   11.448998] Memory state around the buggy address:
[   11.449707]  ffff888101642880: 00 02 fc fc 00 06 fc fc 00 06 fc fc 00 04 fc fc
[   11.449974]  ffff888101642900: 00 04 fc fc 00 01 fc fc 00 01 fc fc 00 04 fc fc
[   11.450893] >ffff888101642980: 00 04 fc fc fa fb fc fc 00 07 fc fc fc fc fc fc
[   11.451149]                                         ^
[   11.451557]  ffff888101642a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.451832]  ffff888101642a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.452234] ==================================================================