Hay
Date
July 18, 2025, 2:09 p.m.

Environment
qemu-arm64
qemu-x86_64

[   19.298919] ==================================================================
[   19.299289] BUG: KASAN: slab-out-of-bounds in memcmp+0x198/0x1d8
[   19.299395] Read of size 1 at addr fff00000c799d358 by task kunit_try_catch/257
[   19.299579] 
[   19.299665] CPU: 0 UID: 0 PID: 257 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT 
[   19.300086] Tainted: [B]=BAD_PAGE, [N]=TEST
[   19.300172] Hardware name: linux,dummy-virt (DT)
[   19.300426] Call trace:
[   19.300474]  show_stack+0x20/0x38 (C)
[   19.300686]  dump_stack_lvl+0x8c/0xd0
[   19.300912]  print_report+0x118/0x5d0
[   19.301183]  kasan_report+0xdc/0x128
[   19.301399]  __asan_report_load1_noabort+0x20/0x30
[   19.301673]  memcmp+0x198/0x1d8
[   19.301875]  kasan_memcmp+0x16c/0x300
[   19.302099]  kunit_try_run_case+0x170/0x3f0
[   19.302285]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   19.302475]  kthread+0x328/0x630
[   19.302794]  ret_from_fork+0x10/0x20
[   19.303012] 
[   19.303254] Allocated by task 257:
[   19.303336]  kasan_save_stack+0x3c/0x68
[   19.303542]  kasan_save_track+0x20/0x40
[   19.303592]  kasan_save_alloc_info+0x40/0x58
[   19.303817]  __kasan_kmalloc+0xd4/0xd8
[   19.303999]  __kmalloc_cache_noprof+0x16c/0x3c0
[   19.304057]  kasan_memcmp+0xbc/0x300
[   19.304163]  kunit_try_run_case+0x170/0x3f0
[   19.304435]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   19.304733]  kthread+0x328/0x630
[   19.304917]  ret_from_fork+0x10/0x20
[   19.305024] 
[   19.305069] The buggy address belongs to the object at fff00000c799d340
[   19.305069]  which belongs to the cache kmalloc-32 of size 32
[   19.305286] The buggy address is located 0 bytes to the right of
[   19.305286]  allocated 24-byte region [fff00000c799d340, fff00000c799d358)
[   19.305361] 
[   19.305494] The buggy address belongs to the physical page:
[   19.305536] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10799d
[   19.305681] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   19.305756] page_type: f5(slab)
[   19.305802] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000
[   19.305881] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   19.305924] page dumped because: kasan: bad access detected
[   19.305957] 
[   19.305989] Memory state around the buggy address:
[   19.306026]  fff00000c799d200: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   19.306080]  fff00000c799d280: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc
[   19.306127] >fff00000c799d300: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   19.306177]                                                     ^
[   19.306218]  fff00000c799d380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   19.306263]  fff00000c799d400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   19.306305] ==================================================================

[   18.879292] ==================================================================
[   18.879512] BUG: KASAN: slab-out-of-bounds in memcmp+0x198/0x1d8
[   18.879666] Read of size 1 at addr fff00000c7a5edd8 by task kunit_try_catch/257
[   18.879722] 
[   18.879806] CPU: 1 UID: 0 PID: 257 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT 
[   18.879962] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.880047] Hardware name: linux,dummy-virt (DT)
[   18.880085] Call trace:
[   18.880123]  show_stack+0x20/0x38 (C)
[   18.880211]  dump_stack_lvl+0x8c/0xd0
[   18.880262]  print_report+0x118/0x5d0
[   18.880357]  kasan_report+0xdc/0x128
[   18.880433]  __asan_report_load1_noabort+0x20/0x30
[   18.880508]  memcmp+0x198/0x1d8
[   18.880568]  kasan_memcmp+0x16c/0x300
[   18.880674]  kunit_try_run_case+0x170/0x3f0
[   18.880799]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.880856]  kthread+0x328/0x630
[   18.880914]  ret_from_fork+0x10/0x20
[   18.880966] 
[   18.880988] Allocated by task 257:
[   18.881019]  kasan_save_stack+0x3c/0x68
[   18.881063]  kasan_save_track+0x20/0x40
[   18.881103]  kasan_save_alloc_info+0x40/0x58
[   18.881291]  __kasan_kmalloc+0xd4/0xd8
[   18.881529]  __kmalloc_cache_noprof+0x16c/0x3c0
[   18.881647]  kasan_memcmp+0xbc/0x300
[   18.881744]  kunit_try_run_case+0x170/0x3f0
[   18.881852]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.881957]  kthread+0x328/0x630
[   18.882076]  ret_from_fork+0x10/0x20
[   18.882163] 
[   18.882206] The buggy address belongs to the object at fff00000c7a5edc0
[   18.882206]  which belongs to the cache kmalloc-32 of size 32
[   18.882296] The buggy address is located 0 bytes to the right of
[   18.882296]  allocated 24-byte region [fff00000c7a5edc0, fff00000c7a5edd8)
[   18.882405] 
[   18.882428] The buggy address belongs to the physical page:
[   18.882602] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107a5e
[   18.882709] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   18.882933] page_type: f5(slab)
[   18.883005] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000
[   18.883097] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   18.883180] page dumped because: kasan: bad access detected
[   18.883232] 
[   18.883264] Memory state around the buggy address:
[   18.883315]  fff00000c7a5ec80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   18.883370]  fff00000c7a5ed00: 00 00 00 04 fc fc fc fc 00 00 07 fc fc fc fc fc
[   18.883423] >fff00000c7a5ed80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   18.883466]                                                     ^
[   18.883505]  fff00000c7a5ee00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.883559]  fff00000c7a5ee80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.883620] ==================================================================

[   13.959051] ==================================================================
[   13.959616] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0
[   13.959927] Read of size 1 at addr ffff8881026f4458 by task kunit_try_catch/275
[   13.960239] 
[   13.960351] CPU: 1 UID: 0 PID: 275 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   13.960395] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.960415] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.960453] Call Trace:
[   13.960465]  <TASK>
[   13.960479]  dump_stack_lvl+0x73/0xb0
[   13.960507]  print_report+0xd1/0x610
[   13.960583]  ? __virt_addr_valid+0x1db/0x2d0
[   13.960607]  ? memcmp+0x1b4/0x1d0
[   13.960625]  ? kasan_complete_mode_report_info+0x2a/0x200
[   13.960648]  ? memcmp+0x1b4/0x1d0
[   13.960677]  kasan_report+0x141/0x180
[   13.960699]  ? memcmp+0x1b4/0x1d0
[   13.960723]  __asan_report_load1_noabort+0x18/0x20
[   13.960759]  memcmp+0x1b4/0x1d0
[   13.960778]  kasan_memcmp+0x18f/0x390
[   13.960798]  ? trace_hardirqs_on+0x37/0xe0
[   13.960821]  ? __pfx_kasan_memcmp+0x10/0x10
[   13.960842]  ? finish_task_switch.isra.0+0x153/0x700
[   13.960873]  ? __switch_to+0x47/0xf50
[   13.960902]  ? __pfx_read_tsc+0x10/0x10
[   13.960922]  ? ktime_get_ts64+0x86/0x230
[   13.960957]  kunit_try_run_case+0x1a5/0x480
[   13.960981]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.961004]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.961027]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.961051]  ? __kthread_parkme+0x82/0x180
[   13.961071]  ? preempt_count_sub+0x50/0x80
[   13.961095]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.961119]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.961148]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.961172]  kthread+0x337/0x6f0
[   13.961191]  ? trace_preempt_on+0x20/0xc0
[   13.961221]  ? __pfx_kthread+0x10/0x10
[   13.961241]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.961264]  ? calculate_sigpending+0x7b/0xa0
[   13.961298]  ? __pfx_kthread+0x10/0x10
[   13.961320]  ret_from_fork+0x116/0x1d0
[   13.961337]  ? __pfx_kthread+0x10/0x10
[   13.961358]  ret_from_fork_asm+0x1a/0x30
[   13.961390]  </TASK>
[   13.961400] 
[   13.970046] Allocated by task 275:
[   13.970278]  kasan_save_stack+0x45/0x70
[   13.970617]  kasan_save_track+0x18/0x40
[   13.970762]  kasan_save_alloc_info+0x3b/0x50
[   13.970940]  __kasan_kmalloc+0xb7/0xc0
[   13.971132]  __kmalloc_cache_noprof+0x189/0x420
[   13.971380]  kasan_memcmp+0xb7/0x390
[   13.971677]  kunit_try_run_case+0x1a5/0x480
[   13.971898]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.972145]  kthread+0x337/0x6f0
[   13.972267]  ret_from_fork+0x116/0x1d0
[   13.972589]  ret_from_fork_asm+0x1a/0x30
[   13.972754] 
[   13.972870] The buggy address belongs to the object at ffff8881026f4440
[   13.972870]  which belongs to the cache kmalloc-32 of size 32
[   13.973381] The buggy address is located 0 bytes to the right of
[   13.973381]  allocated 24-byte region [ffff8881026f4440, ffff8881026f4458)
[   13.974036] 
[   13.974128] The buggy address belongs to the physical page:
[   13.974371] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1026f4
[   13.974981] flags: 0x200000000000000(node=0|zone=2)
[   13.975185] page_type: f5(slab)
[   13.975307] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   13.975554] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   13.975780] page dumped because: kasan: bad access detected
[   13.976022] 
[   13.976196] Memory state around the buggy address:
[   13.976415]  ffff8881026f4300: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.976738]  ffff8881026f4380: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   13.977354] >ffff8881026f4400: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   13.977841]                                                     ^
[   13.978034]  ffff8881026f4480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.978251]  ffff8881026f4500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.978757] ==================================================================

[   14.229745] ==================================================================
[   14.230697] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0
[   14.230927] Read of size 1 at addr ffff8881029c9458 by task kunit_try_catch/274
[   14.232598] 
[   14.232869] CPU: 0 UID: 0 PID: 274 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   14.232929] Tainted: [B]=BAD_PAGE, [N]=TEST
[   14.232945] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   14.232970] Call Trace:
[   14.232985]  <TASK>
[   14.233006]  dump_stack_lvl+0x73/0xb0
[   14.233058]  print_report+0xd1/0x610
[   14.233083]  ? __virt_addr_valid+0x1db/0x2d0
[   14.233107]  ? memcmp+0x1b4/0x1d0
[   14.233125]  ? kasan_complete_mode_report_info+0x2a/0x200
[   14.233147]  ? memcmp+0x1b4/0x1d0
[   14.233165]  kasan_report+0x141/0x180
[   14.233186]  ? memcmp+0x1b4/0x1d0
[   14.233209]  __asan_report_load1_noabort+0x18/0x20
[   14.233233]  memcmp+0x1b4/0x1d0
[   14.233251]  kasan_memcmp+0x18f/0x390
[   14.233272]  ? trace_hardirqs_on+0x37/0xe0
[   14.233295]  ? __pfx_kasan_memcmp+0x10/0x10
[   14.233315]  ? finish_task_switch.isra.0+0x153/0x700
[   14.233338]  ? __switch_to+0x47/0xf50
[   14.233366]  ? __pfx_read_tsc+0x10/0x10
[   14.233386]  ? ktime_get_ts64+0x86/0x230
[   14.233410]  kunit_try_run_case+0x1a5/0x480
[   14.233671]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.233699]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   14.233725]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   14.233749]  ? __kthread_parkme+0x82/0x180
[   14.233771]  ? preempt_count_sub+0x50/0x80
[   14.233793]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.233818]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.233842]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   14.233866]  kthread+0x337/0x6f0
[   14.233885]  ? trace_preempt_on+0x20/0xc0
[   14.233908]  ? __pfx_kthread+0x10/0x10
[   14.233929]  ? _raw_spin_unlock_irq+0x47/0x80
[   14.233950]  ? calculate_sigpending+0x7b/0xa0
[   14.233975]  ? __pfx_kthread+0x10/0x10
[   14.233995]  ret_from_fork+0x116/0x1d0
[   14.234037]  ? __pfx_kthread+0x10/0x10
[   14.234058]  ret_from_fork_asm+0x1a/0x30
[   14.234089]  </TASK>
[   14.234100] 
[   14.251509] Allocated by task 274:
[   14.252142]  kasan_save_stack+0x45/0x70
[   14.252765]  kasan_save_track+0x18/0x40
[   14.253633]  kasan_save_alloc_info+0x3b/0x50
[   14.254301]  __kasan_kmalloc+0xb7/0xc0
[   14.254857]  __kmalloc_cache_noprof+0x189/0x420
[   14.255112]  kasan_memcmp+0xb7/0x390
[   14.255743]  kunit_try_run_case+0x1a5/0x480
[   14.256004]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.256739]  kthread+0x337/0x6f0
[   14.256906]  ret_from_fork+0x116/0x1d0
[   14.257607]  ret_from_fork_asm+0x1a/0x30
[   14.257883] 
[   14.257963] The buggy address belongs to the object at ffff8881029c9440
[   14.257963]  which belongs to the cache kmalloc-32 of size 32
[   14.259369] The buggy address is located 0 bytes to the right of
[   14.259369]  allocated 24-byte region [ffff8881029c9440, ffff8881029c9458)
[   14.260611] 
[   14.260695] The buggy address belongs to the physical page:
[   14.260881] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029c9
[   14.261494] flags: 0x200000000000000(node=0|zone=2)
[   14.262006] page_type: f5(slab)
[   14.262432] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   14.263555] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   14.263812] page dumped because: kasan: bad access detected
[   14.263990] 
[   14.264264] Memory state around the buggy address:
[   14.264794]  ffff8881029c9300: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc
[   14.265584]  ffff8881029c9380: fa fb fb fb fc fc fc fc 00 00 07 fc fc fc fc fc
[   14.266307] >ffff8881029c9400: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   14.266713]                                                     ^
[   14.266909]  ffff8881029c9480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   14.267484]  ffff8881029c9500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   14.268595] ==================================================================

[   14.063007] ==================================================================
[   14.063549] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0
[   14.064139] Read of size 1 at addr ffff888103ab9258 by task kunit_try_catch/274
[   14.064867] 
[   14.065151] CPU: 0 UID: 0 PID: 274 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   14.065199] Tainted: [B]=BAD_PAGE, [N]=TEST
[   14.065210] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   14.065233] Call Trace:
[   14.065244]  <TASK>
[   14.065261]  dump_stack_lvl+0x73/0xb0
[   14.065301]  print_report+0xd1/0x610
[   14.065325]  ? __virt_addr_valid+0x1db/0x2d0
[   14.065349]  ? memcmp+0x1b4/0x1d0
[   14.065377]  ? kasan_complete_mode_report_info+0x2a/0x200
[   14.065402]  ? memcmp+0x1b4/0x1d0
[   14.065419]  kasan_report+0x141/0x180
[   14.065441]  ? memcmp+0x1b4/0x1d0
[   14.065465]  __asan_report_load1_noabort+0x18/0x20
[   14.065489]  memcmp+0x1b4/0x1d0
[   14.065510]  kasan_memcmp+0x18f/0x390
[   14.065530]  ? trace_hardirqs_on+0x37/0xe0
[   14.065553]  ? __pfx_kasan_memcmp+0x10/0x10
[   14.065575]  ? finish_task_switch.isra.0+0x153/0x700
[   14.065605]  ? __switch_to+0x47/0xf50
[   14.065636]  ? __pfx_read_tsc+0x10/0x10
[   14.065657]  ? ktime_get_ts64+0x86/0x230
[   14.065682]  kunit_try_run_case+0x1a5/0x480
[   14.065707]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.065730]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   14.065755]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   14.065779]  ? __kthread_parkme+0x82/0x180
[   14.065799]  ? preempt_count_sub+0x50/0x80
[   14.065823]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.065847]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.065871]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   14.065905]  kthread+0x337/0x6f0
[   14.065925]  ? trace_preempt_on+0x20/0xc0
[   14.065947]  ? __pfx_kthread+0x10/0x10
[   14.065967]  ? _raw_spin_unlock_irq+0x47/0x80
[   14.065989]  ? calculate_sigpending+0x7b/0xa0
[   14.066013]  ? __pfx_kthread+0x10/0x10
[   14.066035]  ret_from_fork+0x116/0x1d0
[   14.066054]  ? __pfx_kthread+0x10/0x10
[   14.066074]  ret_from_fork_asm+0x1a/0x30
[   14.066107]  </TASK>
[   14.066118] 
[   14.079516] Allocated by task 274:
[   14.079878]  kasan_save_stack+0x45/0x70
[   14.080296]  kasan_save_track+0x18/0x40
[   14.080758]  kasan_save_alloc_info+0x3b/0x50
[   14.081188]  __kasan_kmalloc+0xb7/0xc0
[   14.081545]  __kmalloc_cache_noprof+0x189/0x420
[   14.082032]  kasan_memcmp+0xb7/0x390
[   14.082167]  kunit_try_run_case+0x1a5/0x480
[   14.082314]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.082490]  kthread+0x337/0x6f0
[   14.082837]  ret_from_fork+0x116/0x1d0
[   14.083226]  ret_from_fork_asm+0x1a/0x30
[   14.083789] 
[   14.083993] The buggy address belongs to the object at ffff888103ab9240
[   14.083993]  which belongs to the cache kmalloc-32 of size 32
[   14.085176] The buggy address is located 0 bytes to the right of
[   14.085176]  allocated 24-byte region [ffff888103ab9240, ffff888103ab9258)
[   14.086334] 
[   14.086413] The buggy address belongs to the physical page:
[   14.086798] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103ab9
[   14.087602] flags: 0x200000000000000(node=0|zone=2)
[   14.087771] page_type: f5(slab)
[   14.087903] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   14.088585] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   14.089373] page dumped because: kasan: bad access detected
[   14.089995] 
[   14.090221] Memory state around the buggy address:
[   14.090858]  ffff888103ab9100: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   14.091185]  ffff888103ab9180: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   14.091936] >ffff888103ab9200: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   14.092691]                                                     ^
[   14.093194]  ffff888103ab9280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   14.093413]  ffff888103ab9300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   14.093700] ==================================================================