Hay
Date
July 25, 2025, 3:13 a.m.

Environment
qemu-arm64
qemu-x86_64

[   34.522055] ==================================================================
[   34.522125] BUG: KASAN: invalid-free in mempool_kmalloc_invalid_free_helper+0x118/0x2a8
[   34.522285] Free of addr fff00000c9a8b401 by task kunit_try_catch/273
[   34.522335] 
[   34.522597] CPU: 0 UID: 0 PID: 273 Comm: kunit_try_catch Tainted: G    B   W        N  6.16.0-rc7-next-20250725 #1 PREEMPT 
[   34.522924] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST
[   34.523068] Hardware name: linux,dummy-virt (DT)
[   34.523129] Call trace:
[   34.523241]  show_stack+0x20/0x38 (C)
[   34.523312]  dump_stack_lvl+0x8c/0xd0
[   34.523369]  print_report+0x118/0x5e8
[   34.523777]  kasan_report_invalid_free+0xc0/0xe8
[   34.524006]  check_slab_allocation+0xfc/0x108
[   34.524156]  __kasan_mempool_poison_object+0x78/0x150
[   34.524244]  mempool_free+0x3f4/0x5f0
[   34.524412]  mempool_kmalloc_invalid_free_helper+0x118/0x2a8
[   34.524523]  mempool_kmalloc_invalid_free+0xc0/0x118
[   34.524788]  kunit_try_run_case+0x170/0x3f0
[   34.524908]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   34.524985]  kthread+0x328/0x630
[   34.525029]  ret_from_fork+0x10/0x20
[   34.525078] 
[   34.525100] Allocated by task 273:
[   34.525129]  kasan_save_stack+0x3c/0x68
[   34.525169]  kasan_save_track+0x20/0x40
[   34.525205]  kasan_save_alloc_info+0x40/0x58
[   34.525243]  __kasan_mempool_unpoison_object+0x11c/0x180
[   34.525287]  remove_element+0x130/0x1f8
[   34.525324]  mempool_alloc_preallocated+0x58/0xc0
[   34.525364]  mempool_kmalloc_invalid_free_helper+0x94/0x2a8
[   34.525409]  mempool_kmalloc_invalid_free+0xc0/0x118
[   34.525452]  kunit_try_run_case+0x170/0x3f0
[   34.525491]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   34.525534]  kthread+0x328/0x630
[   34.525567]  ret_from_fork+0x10/0x20
[   34.525603] 
[   34.525624] The buggy address belongs to the object at fff00000c9a8b400
[   34.525624]  which belongs to the cache kmalloc-128 of size 128
[   34.525818] The buggy address is located 1 bytes inside of
[   34.525818]  128-byte region [fff00000c9a8b400, fff00000c9a8b480)
[   34.526170] 
[   34.526192] The buggy address belongs to the physical page:
[   34.526232] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109a8b
[   34.526287] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   34.526338] page_type: f5(slab)
[   34.526381] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000
[   34.526469] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   34.526552] page dumped because: kasan: bad access detected
[   34.526582] 
[   34.526602] Memory state around the buggy address:
[   34.526684]  fff00000c9a8b300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   34.526769]  fff00000c9a8b380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   34.526813] >fff00000c9a8b400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   34.526895]                    ^
[   34.526982]  fff00000c9a8b480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   34.527166]  fff00000c9a8b500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   34.527224] ==================================================================
[   34.532179] ==================================================================
[   34.532551] BUG: KASAN: invalid-free in mempool_kmalloc_invalid_free_helper+0x118/0x2a8
[   34.532657] Free of addr fff00000c9bf0001 by task kunit_try_catch/275
[   34.532739] 
[   34.532773] CPU: 0 UID: 0 PID: 275 Comm: kunit_try_catch Tainted: G    B   W        N  6.16.0-rc7-next-20250725 #1 PREEMPT 
[   34.532861] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST
[   34.532929] Hardware name: linux,dummy-virt (DT)
[   34.532988] Call trace:
[   34.533057]  show_stack+0x20/0x38 (C)
[   34.533113]  dump_stack_lvl+0x8c/0xd0
[   34.533162]  print_report+0x118/0x5e8
[   34.533233]  kasan_report_invalid_free+0xc0/0xe8
[   34.533511]  __kasan_mempool_poison_object+0xfc/0x150
[   34.533598]  mempool_free+0x3f4/0x5f0
[   34.533676]  mempool_kmalloc_invalid_free_helper+0x118/0x2a8
[   34.533753]  mempool_kmalloc_large_invalid_free+0xc0/0x118
[   34.533806]  kunit_try_run_case+0x170/0x3f0
[   34.533852]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   34.533989]  kthread+0x328/0x630
[   34.534067]  ret_from_fork+0x10/0x20
[   34.534123] 
[   34.534144] The buggy address belongs to the physical page:
[   34.534180] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109bf0
[   34.534247] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   34.534296] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff)
[   34.534352] page_type: f8(unknown)
[   34.534426] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   34.534748] raw: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000
[   34.535262] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   34.535313] head: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000
[   34.535449] head: 0bfffe0000000002 ffffc1ffc326fc01 00000000ffffffff 00000000ffffffff
[   34.535499] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   34.535539] page dumped because: kasan: bad access detected
[   34.535570] 
[   34.535590] Memory state around the buggy address:
[   34.535623]  fff00000c9beff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   34.535680]  fff00000c9beff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   34.535724] >fff00000c9bf0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   34.535762]                    ^
[   34.535791]  fff00000c9bf0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   34.535833]  fff00000c9bf0100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   34.535871] ==================================================================

[   27.595661] ==================================================================
[   27.596519] BUG: KASAN: invalid-free in mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   27.596844] Free of addr ffff888106370001 by task kunit_try_catch/292
[   27.597237] 
[   27.597406] CPU: 0 UID: 0 PID: 292 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) 
[   27.597457] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.597470] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   27.597491] Call Trace:
[   27.597505]  <TASK>
[   27.597521]  dump_stack_lvl+0x73/0xb0
[   27.597551]  print_report+0xd1/0x640
[   27.597575]  ? __virt_addr_valid+0x1db/0x2d0
[   27.597601]  ? kasan_addr_to_slab+0x11/0xa0
[   27.597622]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   27.597650]  kasan_report_invalid_free+0x10a/0x130
[   27.597676]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   27.597707]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   27.597733]  __kasan_mempool_poison_object+0x102/0x1d0
[   27.597760]  mempool_free+0x490/0x640
[   27.597787]  mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   27.597870]  ? __pfx_mempool_kmalloc_invalid_free_helper+0x10/0x10
[   27.597897]  ? update_load_avg+0x1be/0x21b0
[   27.597925]  ? finish_task_switch.isra.0+0x153/0x700
[   27.597964]  mempool_kmalloc_large_invalid_free+0xed/0x140
[   27.597991]  ? __pfx_mempool_kmalloc_large_invalid_free+0x10/0x10
[   27.598020]  ? __pfx_mempool_kmalloc+0x10/0x10
[   27.598044]  ? __pfx_mempool_kfree+0x10/0x10
[   27.598071]  ? __pfx_read_tsc+0x10/0x10
[   27.598095]  ? ktime_get_ts64+0x86/0x230
[   27.598121]  kunit_try_run_case+0x1a5/0x480
[   27.598145]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.598169]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   27.598193]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   27.598219]  ? __kthread_parkme+0x82/0x180
[   27.598241]  ? preempt_count_sub+0x50/0x80
[   27.598275]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.598300]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.598324]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   27.598350]  kthread+0x337/0x6f0
[   27.598370]  ? trace_preempt_on+0x20/0xc0
[   27.598395]  ? __pfx_kthread+0x10/0x10
[   27.598416]  ? _raw_spin_unlock_irq+0x47/0x80
[   27.598441]  ? calculate_sigpending+0x7b/0xa0
[   27.598465]  ? __pfx_kthread+0x10/0x10
[   27.598488]  ret_from_fork+0x116/0x1d0
[   27.598508]  ? __pfx_kthread+0x10/0x10
[   27.598529]  ret_from_fork_asm+0x1a/0x30
[   27.598563]  </TASK>
[   27.598575] 
[   27.607852] The buggy address belongs to the physical page:
[   27.608228] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106370
[   27.608526] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   27.608840] flags: 0x200000000000040(head|node=0|zone=2)
[   27.609261] page_type: f8(unknown)
[   27.609407] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   27.609648] raw: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000
[   27.609887] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   27.610229] head: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000
[   27.610580] head: 0200000000000002 ffffea000418dc01 00000000ffffffff 00000000ffffffff
[   27.611097] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   27.611455] page dumped because: kasan: bad access detected
[   27.611675] 
[   27.611741] Memory state around the buggy address:
[   27.611901]  ffff88810636ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.612132]  ffff88810636ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.612460] >ffff888106370000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   27.613048]                    ^
[   27.613235]  ffff888106370080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   27.613529]  ffff888106370100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   27.613796] ==================================================================
[   27.570646] ==================================================================
[   27.571447] BUG: KASAN: invalid-free in mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   27.571784] Free of addr ffff888105820001 by task kunit_try_catch/290
[   27.572129] 
[   27.572225] CPU: 0 UID: 0 PID: 290 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) 
[   27.572290] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.572303] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   27.572324] Call Trace:
[   27.572338]  <TASK>
[   27.572356]  dump_stack_lvl+0x73/0xb0
[   27.572386]  print_report+0xd1/0x640
[   27.572410]  ? __virt_addr_valid+0x1db/0x2d0
[   27.572437]  ? kasan_complete_mode_report_info+0x2a/0x200
[   27.572464]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   27.572491]  kasan_report_invalid_free+0x10a/0x130
[   27.572517]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   27.572546]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   27.572572]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   27.572598]  check_slab_allocation+0x11f/0x130
[   27.572620]  __kasan_mempool_poison_object+0x91/0x1d0
[   27.572646]  mempool_free+0x490/0x640
[   27.572674]  mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   27.572700]  ? __pfx_mempool_kmalloc_invalid_free_helper+0x10/0x10
[   27.572731]  ? finish_task_switch.isra.0+0x153/0x700
[   27.572759]  mempool_kmalloc_invalid_free+0xed/0x140
[   27.572784]  ? __pfx_mempool_kmalloc_invalid_free+0x10/0x10
[   27.572813]  ? __pfx_mempool_kmalloc+0x10/0x10
[   27.572840]  ? __pfx_mempool_kfree+0x10/0x10
[   27.572866]  ? __pfx_read_tsc+0x10/0x10
[   27.572890]  ? ktime_get_ts64+0x86/0x230
[   27.572916]  kunit_try_run_case+0x1a5/0x480
[   27.572953]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.572994]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   27.573024]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   27.573052]  ? __kthread_parkme+0x82/0x180
[   27.573083]  ? preempt_count_sub+0x50/0x80
[   27.573108]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.573145]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.573171]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   27.573195]  kthread+0x337/0x6f0
[   27.573215]  ? trace_preempt_on+0x20/0xc0
[   27.573240]  ? __pfx_kthread+0x10/0x10
[   27.573262]  ? _raw_spin_unlock_irq+0x47/0x80
[   27.573287]  ? calculate_sigpending+0x7b/0xa0
[   27.573312]  ? __pfx_kthread+0x10/0x10
[   27.573335]  ret_from_fork+0x116/0x1d0
[   27.573355]  ? __pfx_kthread+0x10/0x10
[   27.573376]  ret_from_fork_asm+0x1a/0x30
[   27.573409]  </TASK>
[   27.573422] 
[   27.582601] Allocated by task 290:
[   27.582799]  kasan_save_stack+0x45/0x70
[   27.583023]  kasan_save_track+0x18/0x40
[   27.583274]  kasan_save_alloc_info+0x3b/0x50
[   27.583466]  __kasan_mempool_unpoison_object+0x1a9/0x200
[   27.583648]  remove_element+0x11e/0x190
[   27.583966]  mempool_alloc_preallocated+0x4d/0x90
[   27.584177]  mempool_kmalloc_invalid_free_helper+0x83/0x2e0
[   27.584454]  mempool_kmalloc_invalid_free+0xed/0x140
[   27.584689]  kunit_try_run_case+0x1a5/0x480
[   27.584929]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.585206]  kthread+0x337/0x6f0
[   27.585360]  ret_from_fork+0x116/0x1d0
[   27.585529]  ret_from_fork_asm+0x1a/0x30
[   27.585711] 
[   27.585798] The buggy address belongs to the object at ffff888105820000
[   27.585798]  which belongs to the cache kmalloc-128 of size 128
[   27.586396] The buggy address is located 1 bytes inside of
[   27.586396]  128-byte region [ffff888105820000, ffff888105820080)
[   27.587061] 
[   27.587165] The buggy address belongs to the physical page:
[   27.587379] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105820
[   27.587717] flags: 0x200000000000000(node=0|zone=2)
[   27.588008] page_type: f5(slab)
[   27.588189] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   27.588487] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   27.588815] page dumped because: kasan: bad access detected
[   27.589046] 
[   27.589191] Memory state around the buggy address:
[   27.589376]  ffff88810581ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   27.589676]  ffff88810581ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   27.590041] >ffff888105820000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   27.590291]                    ^
[   27.590408]  ffff888105820080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   27.590627]  ffff888105820100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   27.590879] ==================================================================