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Date
May 12, 2025, 11:48 a.m.

Environment
qemu-arm64
qemu-x86_64 

[   18.872505] ==================================================================
[   18.872575] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340
[   18.872662] Read of size 1 at addr fff00000c79ec000 by task kunit_try_catch/233
[   18.872711] 
[   18.872744] CPU: 0 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc6-next-20250512 #1 PREEMPT 
[   18.872827] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.872854] Hardware name: linux,dummy-virt (DT)
[   18.873094] Call trace:
[   18.873135]  show_stack+0x20/0x38 (C)
[   18.873191]  dump_stack_lvl+0x8c/0xd0
[   18.873248]  print_report+0x118/0x608
[   18.873296]  kasan_report+0xdc/0x128
[   18.873539]  __asan_report_load1_noabort+0x20/0x30
[   18.873878]  mempool_uaf_helper+0x314/0x340
[   18.874000]  mempool_page_alloc_uaf+0xc0/0x118
[   18.874067]  kunit_try_run_case+0x170/0x3f0
[   18.874120]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.874169]  kthread+0x328/0x630
[   18.874213]  ret_from_fork+0x10/0x20
[   18.874258] 
[   18.874282] The buggy address belongs to the physical page:
[   18.874311] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1079ec
[   18.874364] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   18.874425] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000
[   18.874502] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   18.874542] page dumped because: kasan: bad access detected
[   18.874581] 
[   18.874600] Memory state around the buggy address:
[   18.874632]  fff00000c79ebf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.874675]  fff00000c79ebf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.874853] >fff00000c79ec000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.875023]                    ^
[   18.875067]  fff00000c79ec080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.875127]  fff00000c79ec100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.875165] ==================================================================
[   18.837267] ==================================================================
[   18.837343] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340
[   18.837463] Read of size 1 at addr fff00000c79e8000 by task kunit_try_catch/229
[   18.837517] 
[   18.837548] CPU: 0 UID: 0 PID: 229 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc6-next-20250512 #1 PREEMPT 
[   18.837862] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.838022] Hardware name: linux,dummy-virt (DT)
[   18.838069] Call trace:
[   18.838095]  show_stack+0x20/0x38 (C)
[   18.838150]  dump_stack_lvl+0x8c/0xd0
[   18.838197]  print_report+0x118/0x608
[   18.838242]  kasan_report+0xdc/0x128
[   18.838595]  __asan_report_load1_noabort+0x20/0x30
[   18.838664]  mempool_uaf_helper+0x314/0x340
[   18.838759]  mempool_kmalloc_large_uaf+0xc4/0x120
[   18.838811]  kunit_try_run_case+0x170/0x3f0
[   18.838885]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.838983]  kthread+0x328/0x630
[   18.839118]  ret_from_fork+0x10/0x20
[   18.839174] 
[   18.839199] The buggy address belongs to the physical page:
[   18.839420] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1079e8
[   18.839489] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   18.839537] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff)
[   18.839643] page_type: f8(unknown)
[   18.839697] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   18.839937] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   18.840114] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   18.840284] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   18.840335] head: 0bfffe0000000002 ffffc1ffc31e7a01 00000000ffffffff 00000000ffffffff
[   18.840413] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   18.840455] page dumped because: kasan: bad access detected
[   18.840491] 
[   18.840516] Memory state around the buggy address:
[   18.840574]  fff00000c79e7f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.840618]  fff00000c79e7f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.840661] >fff00000c79e8000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.841009]                    ^
[   18.841078]  fff00000c79e8080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.841126]  fff00000c79e8100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.841252] ==================================================================
Metadata Full log Test run details 

[   18.521988] ==================================================================
[   18.522529] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400
[   18.523524] Read of size 1 at addr ffff888103d0c000 by task kunit_try_catch/250
[   18.524442] 
[   18.524676] CPU: 1 UID: 0 PID: 250 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc6-next-20250512 #1 PREEMPT(voluntary) 
[   18.524788] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.524816] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   18.524862] Call Trace:
[   18.524890]  <TASK>
[   18.524928]  dump_stack_lvl+0x73/0xb0
[   18.524992]  print_report+0xd1/0x650
[   18.525038]  ? __virt_addr_valid+0x1db/0x2d0
[   18.525080]  ? mempool_uaf_helper+0x392/0x400
[   18.525121]  ? kasan_addr_to_slab+0x11/0xa0
[   18.525161]  ? mempool_uaf_helper+0x392/0x400
[   18.525205]  kasan_report+0x141/0x180
[   18.525232]  ? mempool_uaf_helper+0x392/0x400
[   18.525283]  __asan_report_load1_noabort+0x18/0x20
[   18.525311]  mempool_uaf_helper+0x392/0x400
[   18.525336]  ? __pfx_mempool_uaf_helper+0x10/0x10
[   18.525361]  ? __pfx_sched_clock_cpu+0x10/0x10
[   18.525387]  ? finish_task_switch.isra.0+0x153/0x700
[   18.525414]  mempool_page_alloc_uaf+0xed/0x140
[   18.525439]  ? __pfx_mempool_page_alloc_uaf+0x10/0x10
[   18.525466]  ? __pfx_mempool_alloc_pages+0x10/0x10
[   18.525490]  ? __pfx_mempool_free_pages+0x10/0x10
[   18.525514]  ? __pfx_read_tsc+0x10/0x10
[   18.525537]  ? ktime_get_ts64+0x86/0x230
[   18.525563]  kunit_try_run_case+0x1a5/0x480
[   18.525590]  ? __pfx_kunit_try_run_case+0x10/0x10
[   18.525614]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   18.525639]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   18.525670]  ? __kthread_parkme+0x82/0x180
[   18.525716]  ? preempt_count_sub+0x50/0x80
[   18.525740]  ? __pfx_kunit_try_run_case+0x10/0x10
[   18.525765]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   18.525789]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   18.525813]  kthread+0x337/0x6f0
[   18.525834]  ? trace_preempt_on+0x20/0xc0
[   18.525860]  ? __pfx_kthread+0x10/0x10
[   18.525882]  ? _raw_spin_unlock_irq+0x47/0x80
[   18.525904]  ? calculate_sigpending+0x7b/0xa0
[   18.525930]  ? __pfx_kthread+0x10/0x10
[   18.525952]  ret_from_fork+0x116/0x1d0
[   18.525972]  ? __pfx_kthread+0x10/0x10
[   18.525993]  ret_from_fork_asm+0x1a/0x30
[   18.526024]  </TASK>
[   18.526038] 
[   18.538009] The buggy address belongs to the physical page:
[   18.538514] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103d0c
[   18.539054] flags: 0x200000000000000(node=0|zone=2)
[   18.539349] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000
[   18.540022] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   18.540498] page dumped because: kasan: bad access detected
[   18.540785] 
[   18.541023] Memory state around the buggy address:
[   18.541397]  ffff888103d0bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.541813]  ffff888103d0bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.542129] >ffff888103d0c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.542704]                    ^
[   18.543036]  ffff888103d0c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.543375]  ffff888103d0c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.543699] ==================================================================
[   18.436339] ==================================================================
[   18.436866] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400
[   18.437587] Read of size 1 at addr ffff888103d08000 by task kunit_try_catch/246
[   18.438044] 
[   18.438217] CPU: 1 UID: 0 PID: 246 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc6-next-20250512 #1 PREEMPT(voluntary) 
[   18.438393] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.438420] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   18.438459] Call Trace:
[   18.438484]  <TASK>
[   18.438516]  dump_stack_lvl+0x73/0xb0
[   18.438574]  print_report+0xd1/0x650
[   18.438615]  ? __virt_addr_valid+0x1db/0x2d0
[   18.438676]  ? mempool_uaf_helper+0x392/0x400
[   18.438724]  ? kasan_addr_to_slab+0x11/0xa0
[   18.438766]  ? mempool_uaf_helper+0x392/0x400
[   18.438811]  kasan_report+0x141/0x180
[   18.438859]  ? mempool_uaf_helper+0x392/0x400
[   18.438916]  __asan_report_load1_noabort+0x18/0x20
[   18.438963]  mempool_uaf_helper+0x392/0x400
[   18.439032]  ? __pfx_mempool_uaf_helper+0x10/0x10
[   18.439079]  ? __pfx_sched_clock_cpu+0x10/0x10
[   18.439114]  ? finish_task_switch.isra.0+0x153/0x700
[   18.439153]  mempool_kmalloc_large_uaf+0xef/0x140
[   18.439192]  ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10
[   18.439226]  ? __pfx_mempool_kmalloc+0x10/0x10
[   18.439250]  ? __pfx_mempool_kfree+0x10/0x10
[   18.439297]  ? __pfx_read_tsc+0x10/0x10
[   18.439321]  ? ktime_get_ts64+0x86/0x230
[   18.439347]  kunit_try_run_case+0x1a5/0x480
[   18.439374]  ? __pfx_kunit_try_run_case+0x10/0x10
[   18.439398]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   18.439423]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   18.439447]  ? __kthread_parkme+0x82/0x180
[   18.439470]  ? preempt_count_sub+0x50/0x80
[   18.439494]  ? __pfx_kunit_try_run_case+0x10/0x10
[   18.439520]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   18.439545]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   18.439570]  kthread+0x337/0x6f0
[   18.439591]  ? trace_preempt_on+0x20/0xc0
[   18.439617]  ? __pfx_kthread+0x10/0x10
[   18.439639]  ? _raw_spin_unlock_irq+0x47/0x80
[   18.439660]  ? calculate_sigpending+0x7b/0xa0
[   18.439686]  ? __pfx_kthread+0x10/0x10
[   18.439709]  ret_from_fork+0x116/0x1d0
[   18.439729]  ? __pfx_kthread+0x10/0x10
[   18.439751]  ret_from_fork_asm+0x1a/0x30
[   18.439783]  </TASK>
[   18.439797] 
[   18.451995] The buggy address belongs to the physical page:
[   18.452631] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103d08
[   18.453294] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   18.453594] flags: 0x200000000000040(head|node=0|zone=2)
[   18.454292] page_type: f8(unknown)
[   18.454626] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   18.455366] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   18.455784] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   18.456250] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   18.456846] head: 0200000000000002 ffffea00040f4201 00000000ffffffff 00000000ffffffff
[   18.457529] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   18.457944] page dumped because: kasan: bad access detected
[   18.458410] 
[   18.458544] Memory state around the buggy address:
[   18.458864]  ffff888103d07f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.459562]  ffff888103d07f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.460001] >ffff888103d08000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.460417]                    ^
[   18.460722]  ffff888103d08080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.461423]  ffff888103d08100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   18.461989] ==================================================================
Metadata Full log Test run details