[   17.008800] ==================================================================
[   17.008997] BUG: KASAN: slab-use-after-free in rcu_uaf_reclaim+0x64/0x70
[   17.009068] Read of size 4 at addr fff00000c5ac90c0 by task swapper/1/0
[   17.009165] 
[   17.009250] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT 
[   17.009375] Tainted: [B]=BAD_PAGE, [N]=TEST
[   17.009403] Hardware name: linux,dummy-virt (DT)
[   17.009438] Call trace:
[   17.009462]  show_stack+0x20/0x38 (C)
[   17.009759]  dump_stack_lvl+0x8c/0xd0
[   17.009831]  print_report+0x118/0x5d0
[   17.009877]  kasan_report+0xdc/0x128
[   17.009953]  __asan_report_load4_noabort+0x20/0x30
[   17.010010]  rcu_uaf_reclaim+0x64/0x70
[   17.010054]  rcu_core+0x9f4/0x1e20
[   17.010101]  rcu_core_si+0x18/0x30
[   17.010145]  handle_softirqs+0x374/0xb28
[   17.010419]  __do_softirq+0x1c/0x28
[   17.010512]  ____do_softirq+0x18/0x30
[   17.010634]  call_on_irq_stack+0x24/0x30
[   17.011404]  do_softirq_own_stack+0x24/0x38
[   17.011475]  __irq_exit_rcu+0x1fc/0x318
[   17.012522]  irq_exit_rcu+0x1c/0x80
[   17.012579]  el1_interrupt+0x38/0x58
[   17.012631]  el1h_64_irq_handler+0x18/0x28
[   17.012686]  el1h_64_irq+0x6c/0x70
[   17.012792]  arch_local_irq_enable+0x4/0x8 (P)
[   17.012843]  do_idle+0x384/0x4e8
[   17.012885]  cpu_startup_entry+0x68/0x80
[   17.012930]  secondary_start_kernel+0x288/0x340
[   17.012978]  __secondary_switched+0xc0/0xc8
[   17.013033] 
[   17.013051] Allocated by task 199:
[   17.013083]  kasan_save_stack+0x3c/0x68
[   17.013124]  kasan_save_track+0x20/0x40
[   17.013160]  kasan_save_alloc_info+0x40/0x58
[   17.013214]  __kasan_kmalloc+0xd4/0xd8
[   17.013251]  __kmalloc_cache_noprof+0x16c/0x3c0
[   17.013292]  rcu_uaf+0xb0/0x2d8
[   17.013324]  kunit_try_run_case+0x170/0x3f0
[   17.013364]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   17.013407]  kthread+0x328/0x630
[   17.013439]  ret_from_fork+0x10/0x20
[   17.013477] 
[   17.013495] Freed by task 0:
[   17.013520]  kasan_save_stack+0x3c/0x68
[   17.013558]  kasan_save_track+0x20/0x40
[   17.013595]  kasan_save_free_info+0x4c/0x78
[   17.013635]  __kasan_slab_free+0x6c/0x98
[   17.013673]  kfree+0x214/0x3c8
[   17.013704]  rcu_uaf_reclaim+0x28/0x70
[   17.013739]  rcu_core+0x9f4/0x1e20
[   17.013774]  rcu_core_si+0x18/0x30
[   17.013807]  handle_softirqs+0x374/0xb28
[   17.013844]  __do_softirq+0x1c/0x28
[   17.013877] 
[   17.013906] Last potentially related work creation:
[   17.013942]  kasan_save_stack+0x3c/0x68
[   17.013981]  kasan_record_aux_stack+0xb4/0xc8
[   17.014035]  __call_rcu_common.constprop.0+0x74/0x8c8
[   17.014778]  call_rcu+0x18/0x30
[   17.014815]  rcu_uaf+0x14c/0x2d8
[   17.015279]  kunit_try_run_case+0x170/0x3f0
[   17.015342]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   17.015396]  kthread+0x328/0x630
[   17.015433]  ret_from_fork+0x10/0x20
[   17.015483] 
[   17.015515] The buggy address belongs to the object at fff00000c5ac90c0
[   17.015515]  which belongs to the cache kmalloc-32 of size 32
[   17.015950] The buggy address is located 0 bytes inside of
[   17.015950]  freed 32-byte region [fff00000c5ac90c0, fff00000c5ac90e0)
[   17.016027] 
[   17.016050] The buggy address belongs to the physical page:
[   17.016128] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105ac9
[   17.016211] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   17.016263] page_type: f5(slab)
[   17.016308] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000
[   17.016364] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   17.016407] page dumped because: kasan: bad access detected
[   17.016439] 
[   17.016456] Memory state around the buggy address:
[   17.016490]  fff00000c5ac8f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   17.016536]  fff00000c5ac9000: 00 00 05 fc fc fc fc fc 00 00 07 fc fc fc fc fc
[   17.016581] >fff00000c5ac9080: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   17.016620]                                            ^
[   17.016656]  fff00000c5ac9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   17.016699]  fff00000c5ac9180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   17.016738] ==================================================================

[   13.227665] ==================================================================
[   13.228110] BUG: KASAN: slab-use-after-free in rcu_uaf_reclaim+0x50/0x60
[   13.228676] Read of size 4 at addr ffff8881026c5540 by task swapper/0/0
[   13.229030] 
[   13.229207] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   13.229251] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.229262] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.229281] Call Trace:
[   13.229314]  <IRQ>
[   13.229328]  dump_stack_lvl+0x73/0xb0
[   13.229358]  print_report+0xd1/0x610
[   13.229380]  ? __virt_addr_valid+0x1db/0x2d0
[   13.229403]  ? rcu_uaf_reclaim+0x50/0x60
[   13.229608]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.229635]  ? rcu_uaf_reclaim+0x50/0x60
[   13.229656]  kasan_report+0x141/0x180
[   13.229678]  ? rcu_uaf_reclaim+0x50/0x60
[   13.229703]  __asan_report_load4_noabort+0x18/0x20
[   13.229728]  rcu_uaf_reclaim+0x50/0x60
[   13.229748]  rcu_core+0x66f/0x1c40
[   13.229777]  ? __pfx_rcu_core+0x10/0x10
[   13.229798]  ? ktime_get+0x6b/0x150
[   13.229819]  ? handle_softirqs+0x18e/0x730
[   13.229844]  rcu_core_si+0x12/0x20
[   13.229863]  handle_softirqs+0x209/0x730
[   13.229883]  ? hrtimer_interrupt+0x2fe/0x780
[   13.229906]  ? __pfx_handle_softirqs+0x10/0x10
[   13.229932]  __irq_exit_rcu+0xc9/0x110
[   13.229952]  irq_exit_rcu+0x12/0x20
[   13.229972]  sysvec_apic_timer_interrupt+0x81/0x90
[   13.229998]  </IRQ>
[   13.230025]  <TASK>
[   13.230035]  asm_sysvec_apic_timer_interrupt+0x1f/0x30
[   13.230124] RIP: 0010:pv_native_safe_halt+0xf/0x20
[   13.230335] Code: 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 23 72 21 00 fb f4 <e9> 3c 1d 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
[   13.230413] RSP: 0000:ffffffffa1e07dd8 EFLAGS: 00010202
[   13.230512] RAX: ffff8881b7e72000 RBX: ffffffffa1e1cac0 RCX: ffffffffa0c75125
[   13.230559] RDX: ffffed102b60618b RSI: 0000000000000004 RDI: 0000000000005074
[   13.230602] RBP: ffffffffa1e07de0 R08: 0000000000000001 R09: ffffed102b60618a
[   13.230644] R10: ffff88815b030c53 R11: 00000000000b5400 R12: 0000000000000000
[   13.230686] R13: fffffbfff43c3958 R14: ffffffffa29b1490 R15: 0000000000000000
[   13.230742]  ? ct_kernel_exit.constprop.0+0xa5/0xd0
[   13.230795]  ? default_idle+0xd/0x20
[   13.230817]  arch_cpu_idle+0xd/0x20
[   13.230838]  default_idle_call+0x48/0x80
[   13.230857]  do_idle+0x379/0x4f0
[   13.230882]  ? __pfx_do_idle+0x10/0x10
[   13.230909]  cpu_startup_entry+0x5c/0x70
[   13.230929]  rest_init+0x11a/0x140
[   13.230946]  ? acpi_subsystem_init+0x5d/0x150
[   13.230971]  start_kernel+0x330/0x410
[   13.230996]  x86_64_start_reservations+0x1c/0x30
[   13.231022]  x86_64_start_kernel+0x10d/0x120
[   13.231046]  common_startup_64+0x13e/0x148
[   13.231077]  </TASK>
[   13.231087] 
[   13.245992] Allocated by task 215:
[   13.246177]  kasan_save_stack+0x45/0x70
[   13.246342]  kasan_save_track+0x18/0x40
[   13.246911]  kasan_save_alloc_info+0x3b/0x50
[   13.247114]  __kasan_kmalloc+0xb7/0xc0
[   13.247469]  __kmalloc_cache_noprof+0x189/0x420
[   13.247853]  rcu_uaf+0xb0/0x330
[   13.248018]  kunit_try_run_case+0x1a5/0x480
[   13.248187]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.248419]  kthread+0x337/0x6f0
[   13.249022]  ret_from_fork+0x116/0x1d0
[   13.249192]  ret_from_fork_asm+0x1a/0x30
[   13.249749] 
[   13.249973] Freed by task 0:
[   13.250130]  kasan_save_stack+0x45/0x70
[   13.250732]  kasan_save_track+0x18/0x40
[   13.250930]  kasan_save_free_info+0x3f/0x60
[   13.251210]  __kasan_slab_free+0x56/0x70
[   13.251513]  kfree+0x222/0x3f0
[   13.251786]  rcu_uaf_reclaim+0x1f/0x60
[   13.251966]  rcu_core+0x66f/0x1c40
[   13.252144]  rcu_core_si+0x12/0x20
[   13.252314]  handle_softirqs+0x209/0x730
[   13.252871]  __irq_exit_rcu+0xc9/0x110
[   13.253035]  irq_exit_rcu+0x12/0x20
[   13.253369]  sysvec_apic_timer_interrupt+0x81/0x90
[   13.253912]  asm_sysvec_apic_timer_interrupt+0x1f/0x30
[   13.254160] 
[   13.254274] Last potentially related work creation:
[   13.254490]  kasan_save_stack+0x45/0x70
[   13.255055]  kasan_record_aux_stack+0xb2/0xc0
[   13.255244]  __call_rcu_common.constprop.0+0x7b/0x9e0
[   13.255524]  call_rcu+0x12/0x20
[   13.255764]  rcu_uaf+0x168/0x330
[   13.255915]  kunit_try_run_case+0x1a5/0x480
[   13.256122]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.256394]  kthread+0x337/0x6f0
[   13.257042]  ret_from_fork+0x116/0x1d0
[   13.257200]  ret_from_fork_asm+0x1a/0x30
[   13.257573] 
[   13.257963] The buggy address belongs to the object at ffff8881026c5540
[   13.257963]  which belongs to the cache kmalloc-32 of size 32
[   13.258750] The buggy address is located 0 bytes inside of
[   13.258750]  freed 32-byte region [ffff8881026c5540, ffff8881026c5560)
[   13.259316] 
[   13.259417] The buggy address belongs to the physical page:
[   13.259935] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1026c5
[   13.260393] flags: 0x200000000000000(node=0|zone=2)
[   13.260935] page_type: f5(slab)
[   13.261088] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   13.261616] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   13.262156] page dumped because: kasan: bad access detected
[   13.262594] 
[   13.262690] Memory state around the buggy address:
[   13.262914]  ffff8881026c5400: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.263221]  ffff8881026c5480: 00 00 00 fc fc fc fc fc 00 00 05 fc fc fc fc fc
[   13.263849] >ffff8881026c5500: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc
[   13.264112]                                            ^
[   13.264523]  ffff8881026c5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.264994]  ffff8881026c5600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.265381] ==================================================================

[   13.428748] ==================================================================
[   13.429261] BUG: KASAN: slab-use-after-free in rcu_uaf_reclaim+0x50/0x60
[   13.429642] Read of size 4 at addr ffff88810259be80 by task swapper/0/0
[   13.429943] 
[   13.430232] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   13.430328] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.430343] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.430364] Call Trace:
[   13.430436]  <IRQ>
[   13.430455]  dump_stack_lvl+0x73/0xb0
[   13.430516]  print_report+0xd1/0x610
[   13.430539]  ? __virt_addr_valid+0x1db/0x2d0
[   13.430564]  ? rcu_uaf_reclaim+0x50/0x60
[   13.430584]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.430608]  ? rcu_uaf_reclaim+0x50/0x60
[   13.430697]  kasan_report+0x141/0x180
[   13.430765]  ? rcu_uaf_reclaim+0x50/0x60
[   13.430791]  __asan_report_load4_noabort+0x18/0x20
[   13.430828]  rcu_uaf_reclaim+0x50/0x60
[   13.430849]  rcu_core+0x66f/0x1c40
[   13.430878]  ? __pfx_rcu_core+0x10/0x10
[   13.430900]  ? ktime_get+0x6b/0x150
[   13.430922]  ? handle_softirqs+0x18e/0x730
[   13.430948]  rcu_core_si+0x12/0x20
[   13.430968]  handle_softirqs+0x209/0x730
[   13.430988]  ? hrtimer_interrupt+0x2fe/0x780
[   13.431010]  ? __pfx_handle_softirqs+0x10/0x10
[   13.431037]  __irq_exit_rcu+0xc9/0x110
[   13.431068]  irq_exit_rcu+0x12/0x20
[   13.431088]  sysvec_apic_timer_interrupt+0x81/0x90
[   13.431133]  </IRQ>
[   13.431162]  <TASK>
[   13.431172]  asm_sysvec_apic_timer_interrupt+0x1f/0x30
[   13.431273] RIP: 0010:pv_native_safe_halt+0xf/0x20
[   13.431489] Code: 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 23 72 21 00 fb f4 <e9> 3c 1d 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
[   13.431571] RSP: 0000:ffffffffb3007dd8 EFLAGS: 00010202
[   13.431744] RAX: ffff8881a0272000 RBX: ffffffffb301cac0 RCX: ffffffffb1e75125
[   13.431803] RDX: ffffed102a8c618b RSI: 0000000000000004 RDI: 0000000000005c84
[   13.431848] RBP: ffffffffb3007de0 R08: 0000000000000001 R09: ffffed102a8c618a
[   13.431891] R10: ffff888154630c53 R11: 0000000000000002 R12: 0000000000000000
[   13.431936] R13: fffffbfff6603958 R14: ffffffffb3bb1490 R15: 0000000000000000
[   13.431996]  ? ct_kernel_exit.constprop.0+0xa5/0xd0
[   13.432068]  ? default_idle+0xd/0x20
[   13.432091]  arch_cpu_idle+0xd/0x20
[   13.432113]  default_idle_call+0x48/0x80
[   13.432132]  do_idle+0x379/0x4f0
[   13.432180]  ? __pfx_do_idle+0x10/0x10
[   13.432202]  ? trace_preempt_on+0x20/0xc0
[   13.432226]  ? schedule+0x86/0x2e0
[   13.432246]  ? preempt_count_sub+0x50/0x80
[   13.432270]  cpu_startup_entry+0x5c/0x70
[   13.432291]  rest_init+0x11a/0x140
[   13.432308]  ? acpi_subsystem_init+0x5d/0x150
[   13.432334]  start_kernel+0x330/0x410
[   13.432360]  x86_64_start_reservations+0x1c/0x30
[   13.432385]  x86_64_start_kernel+0x10d/0x120
[   13.432410]  common_startup_64+0x13e/0x148
[   13.432442]  </TASK>
[   13.432452] 
[   13.444102] Allocated by task 216:
[   13.444363]  kasan_save_stack+0x45/0x70
[   13.444723]  kasan_save_track+0x18/0x40
[   13.444952]  kasan_save_alloc_info+0x3b/0x50
[   13.445215]  __kasan_kmalloc+0xb7/0xc0
[   13.445439]  __kmalloc_cache_noprof+0x189/0x420
[   13.445884]  rcu_uaf+0xb0/0x330
[   13.446041]  kunit_try_run_case+0x1a5/0x480
[   13.446335]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.446561]  kthread+0x337/0x6f0
[   13.446897]  ret_from_fork+0x116/0x1d0
[   13.447107]  ret_from_fork_asm+0x1a/0x30
[   13.447335] 
[   13.447465] Freed by task 0:
[   13.447599]  kasan_save_stack+0x45/0x70
[   13.447913]  kasan_save_track+0x18/0x40
[   13.448122]  kasan_save_free_info+0x3f/0x60
[   13.448341]  __kasan_slab_free+0x56/0x70
[   13.448570]  kfree+0x222/0x3f0
[   13.448841]  rcu_uaf_reclaim+0x1f/0x60
[   13.449072]  rcu_core+0x66f/0x1c40
[   13.449258]  rcu_core_si+0x12/0x20
[   13.449487]  handle_softirqs+0x209/0x730
[   13.449787]  __irq_exit_rcu+0xc9/0x110
[   13.449937]  irq_exit_rcu+0x12/0x20
[   13.450128]  sysvec_apic_timer_interrupt+0x81/0x90
[   13.450429]  asm_sysvec_apic_timer_interrupt+0x1f/0x30
[   13.450918] 
[   13.451022] Last potentially related work creation:
[   13.451242]  kasan_save_stack+0x45/0x70
[   13.451435]  kasan_record_aux_stack+0xb2/0xc0
[   13.451637]  __call_rcu_common.constprop.0+0x7b/0x9e0
[   13.451872]  call_rcu+0x12/0x20
[   13.452036]  rcu_uaf+0x168/0x330
[   13.452202]  kunit_try_run_case+0x1a5/0x480
[   13.452402]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.452646]  kthread+0x337/0x6f0
[   13.452798]  ret_from_fork+0x116/0x1d0
[   13.453038]  ret_from_fork_asm+0x1a/0x30
[   13.453299] 
[   13.453383] The buggy address belongs to the object at ffff88810259be80
[   13.453383]  which belongs to the cache kmalloc-32 of size 32
[   13.454427] The buggy address is located 0 bytes inside of
[   13.454427]  freed 32-byte region [ffff88810259be80, ffff88810259bea0)
[   13.454997] 
[   13.455128] The buggy address belongs to the physical page:
[   13.455747] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10259b
[   13.456483] flags: 0x200000000000000(node=0|zone=2)
[   13.457018] page_type: f5(slab)
[   13.457198] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   13.457599] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   13.457997] page dumped because: kasan: bad access detected
[   13.458296] 
[   13.458401] Memory state around the buggy address:
[   13.458581]  ffff88810259bd80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   13.459029]  ffff88810259be00: 00 00 05 fc fc fc fc fc 00 00 07 fc fc fc fc fc
[   13.459392] >ffff88810259be80: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
[   13.459765]                    ^
[   13.459911]  ffff88810259bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.460293]  ffff88810259bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.460621] ==================================================================