Hay
Date
July 1, 2025, 3:08 p.m.

Environment
qemu-arm64
qemu-x86_64

[   19.078637] ==================================================================
[   19.078716] BUG: KASAN: invalid-free in mempool_kmalloc_invalid_free_helper+0x118/0x2a8
[   19.078783] Free of addr fff00000c7bc8001 by task kunit_try_catch/244
[   19.078826] 
[   19.079057] CPU: 0 UID: 0 PID: 244 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT 
[   19.079217] Tainted: [B]=BAD_PAGE, [N]=TEST
[   19.079261] Hardware name: linux,dummy-virt (DT)
[   19.079330] Call trace:
[   19.079368]  show_stack+0x20/0x38 (C)
[   19.079656]  dump_stack_lvl+0x8c/0xd0
[   19.079726]  print_report+0x118/0x608
[   19.079785]  kasan_report_invalid_free+0xc0/0xe8
[   19.079838]  __kasan_mempool_poison_object+0xfc/0x150
[   19.079930]  mempool_free+0x28c/0x328
[   19.079995]  mempool_kmalloc_invalid_free_helper+0x118/0x2a8
[   19.080050]  mempool_kmalloc_large_invalid_free+0xc0/0x118
[   19.080245]  kunit_try_run_case+0x170/0x3f0
[   19.080299]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   19.080361]  kthread+0x328/0x630
[   19.080730]  ret_from_fork+0x10/0x20
[   19.080831] 
[   19.080862] The buggy address belongs to the physical page:
[   19.080935] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107bc8
[   19.081032] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   19.081133] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff)
[   19.081199] page_type: f8(unknown)
[   19.081242] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   19.081297] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   19.081716] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   19.081884] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   19.082041] head: 0bfffe0000000002 ffffc1ffc31ef201 00000000ffffffff 00000000ffffffff
[   19.082117] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   19.082334] page dumped because: kasan: bad access detected
[   19.082401] 
[   19.082419] Memory state around the buggy address:
[   19.082700]  fff00000c7bc7f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   19.082793]  fff00000c7bc7f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   19.082868] >fff00000c7bc8000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   19.083040]                    ^
[   19.083217]  fff00000c7bc8080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   19.083305]  fff00000c7bc8100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   19.083622] ==================================================================
[   19.059682] ==================================================================
[   19.059753] BUG: KASAN: invalid-free in mempool_kmalloc_invalid_free_helper+0x118/0x2a8
[   19.059902] Free of addr fff00000c57ee201 by task kunit_try_catch/242
[   19.059958] 
[   19.060022] CPU: 0 UID: 0 PID: 242 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT 
[   19.060106] Tainted: [B]=BAD_PAGE, [N]=TEST
[   19.060393] Hardware name: linux,dummy-virt (DT)
[   19.060498] Call trace:
[   19.060523]  show_stack+0x20/0x38 (C)
[   19.060648]  dump_stack_lvl+0x8c/0xd0
[   19.060703]  print_report+0x118/0x608
[   19.060810]  kasan_report_invalid_free+0xc0/0xe8
[   19.060867]  check_slab_allocation+0xfc/0x108
[   19.061014]  __kasan_mempool_poison_object+0x78/0x150
[   19.061073]  mempool_free+0x28c/0x328
[   19.061117]  mempool_kmalloc_invalid_free_helper+0x118/0x2a8
[   19.061528]  mempool_kmalloc_invalid_free+0xc0/0x118
[   19.061622]  kunit_try_run_case+0x170/0x3f0
[   19.061772]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   19.061860]  kthread+0x328/0x630
[   19.062043]  ret_from_fork+0x10/0x20
[   19.062358] 
[   19.062430] Allocated by task 242:
[   19.062677]  kasan_save_stack+0x3c/0x68
[   19.062891]  kasan_save_track+0x20/0x40
[   19.062951]  kasan_save_alloc_info+0x40/0x58
[   19.063261]  __kasan_mempool_unpoison_object+0x11c/0x180
[   19.063343]  remove_element+0x130/0x1f8
[   19.063521]  mempool_alloc_preallocated+0x58/0xc0
[   19.063613]  mempool_kmalloc_invalid_free_helper+0x94/0x2a8
[   19.063717]  mempool_kmalloc_invalid_free+0xc0/0x118
[   19.063785]  kunit_try_run_case+0x170/0x3f0
[   19.064120]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   19.064247]  kthread+0x328/0x630
[   19.064420]  ret_from_fork+0x10/0x20
[   19.064630] 
[   19.064719] The buggy address belongs to the object at fff00000c57ee200
[   19.064719]  which belongs to the cache kmalloc-128 of size 128
[   19.064785] The buggy address is located 1 bytes inside of
[   19.064785]  128-byte region [fff00000c57ee200, fff00000c57ee280)
[   19.065113] 
[   19.065205] The buggy address belongs to the physical page:
[   19.065339] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1057ee
[   19.065537] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   19.065641] page_type: f5(slab)
[   19.065874] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000
[   19.066076] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   19.066229] page dumped because: kasan: bad access detected
[   19.066290] 
[   19.066309] Memory state around the buggy address:
[   19.066509]  fff00000c57ee100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   19.066718]  fff00000c57ee180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   19.066783] >fff00000c57ee200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   19.066919]                    ^
[   19.067030]  fff00000c57ee280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   19.067255]  fff00000c57ee300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   19.067315] ==================================================================

[   13.394238] ==================================================================
[   13.394933] BUG: KASAN: invalid-free in mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   13.395539] Free of addr ffff8881039c8001 by task kunit_try_catch/260
[   13.395848] 
[   13.396129] CPU: 0 UID: 0 PID: 260 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   13.396189] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.396202] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.396224] Call Trace:
[   13.396237]  <TASK>
[   13.396256]  dump_stack_lvl+0x73/0xb0
[   13.396287]  print_report+0xd1/0x650
[   13.396310]  ? __virt_addr_valid+0x1db/0x2d0
[   13.396470]  ? kasan_addr_to_slab+0x11/0xa0
[   13.396499]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   13.396552]  kasan_report_invalid_free+0x10a/0x130
[   13.396576]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   13.396605]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   13.396629]  __kasan_mempool_poison_object+0x102/0x1d0
[   13.396711]  mempool_free+0x2ec/0x380
[   13.396759]  mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   13.396786]  ? __pfx_mempool_kmalloc_invalid_free_helper+0x10/0x10
[   13.396810]  ? update_load_avg+0x1be/0x21b0
[   13.396836]  ? finish_task_switch.isra.0+0x153/0x700
[   13.396861]  mempool_kmalloc_large_invalid_free+0xed/0x140
[   13.396885]  ? __pfx_mempool_kmalloc_large_invalid_free+0x10/0x10
[   13.396911]  ? __pfx_mempool_kmalloc+0x10/0x10
[   13.396935]  ? __pfx_mempool_kfree+0x10/0x10
[   13.396959]  ? __pfx_read_tsc+0x10/0x10
[   13.396980]  ? ktime_get_ts64+0x86/0x230
[   13.397003]  kunit_try_run_case+0x1a5/0x480
[   13.397041]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.397063]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.397087]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.397110]  ? __kthread_parkme+0x82/0x180
[   13.397131]  ? preempt_count_sub+0x50/0x80
[   13.397153]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.397176]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.397199]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.397221]  kthread+0x337/0x6f0
[   13.397240]  ? trace_preempt_on+0x20/0xc0
[   13.397264]  ? __pfx_kthread+0x10/0x10
[   13.397283]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.397304]  ? calculate_sigpending+0x7b/0xa0
[   13.397327]  ? __pfx_kthread+0x10/0x10
[   13.397348]  ret_from_fork+0x116/0x1d0
[   13.397366]  ? __pfx_kthread+0x10/0x10
[   13.397385]  ret_from_fork_asm+0x1a/0x30
[   13.397416]  </TASK>
[   13.397428] 
[   13.407186] The buggy address belongs to the physical page:
[   13.407478] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039c8
[   13.407927] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   13.408320] flags: 0x200000000000040(head|node=0|zone=2)
[   13.408579] page_type: f8(unknown)
[   13.408750] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   13.409098] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   13.409321] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   13.409833] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   13.410221] head: 0200000000000002 ffffea00040e7201 00000000ffffffff 00000000ffffffff
[   13.410588] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   13.411075] page dumped because: kasan: bad access detected
[   13.411312] 
[   13.411411] Memory state around the buggy address:
[   13.411627]  ffff8881039c7f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   13.411954]  ffff8881039c7f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   13.412301] >ffff8881039c8000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.412769]                    ^
[   13.413055]  ffff8881039c8080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.413333]  ffff8881039c8100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.413670] ==================================================================
[   13.367056] ==================================================================
[   13.367593] BUG: KASAN: invalid-free in mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   13.368040] Free of addr ffff8881027e1501 by task kunit_try_catch/258
[   13.368537] 
[   13.368638] CPU: 1 UID: 0 PID: 258 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   13.368703] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.368715] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.368738] Call Trace:
[   13.368765]  <TASK>
[   13.368963]  dump_stack_lvl+0x73/0xb0
[   13.368998]  print_report+0xd1/0x650
[   13.369035]  ? __virt_addr_valid+0x1db/0x2d0
[   13.369084]  ? kasan_complete_mode_report_info+0x2a/0x200
[   13.369107]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   13.369132]  kasan_report_invalid_free+0x10a/0x130
[   13.369157]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   13.369183]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   13.369206]  ? mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   13.369229]  check_slab_allocation+0x11f/0x130
[   13.369268]  __kasan_mempool_poison_object+0x91/0x1d0
[   13.369291]  mempool_free+0x2ec/0x380
[   13.369313]  mempool_kmalloc_invalid_free_helper+0x132/0x2e0
[   13.369337]  ? __pfx_mempool_kmalloc_invalid_free_helper+0x10/0x10
[   13.369360]  ? update_load_avg+0x1be/0x21b0
[   13.369388]  ? finish_task_switch.isra.0+0x153/0x700
[   13.369413]  mempool_kmalloc_invalid_free+0xed/0x140
[   13.369436]  ? __pfx_mempool_kmalloc_invalid_free+0x10/0x10
[   13.369460]  ? __kasan_check_write+0x18/0x20
[   13.369480]  ? __pfx_mempool_kmalloc+0x10/0x10
[   13.369501]  ? __pfx_mempool_kfree+0x10/0x10
[   13.369526]  ? __pfx_read_tsc+0x10/0x10
[   13.369547]  ? ktime_get_ts64+0x86/0x230
[   13.369567]  ? sysvec_apic_timer_interrupt+0x50/0x90
[   13.369593]  kunit_try_run_case+0x1a5/0x480
[   13.369617]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.369777]  ? queued_spin_lock_slowpath+0x116/0xb40
[   13.369810]  ? __kthread_parkme+0x82/0x180
[   13.369831]  ? preempt_count_sub+0x50/0x80
[   13.369854]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.369877]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.369899]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.369921]  kthread+0x337/0x6f0
[   13.369940]  ? trace_preempt_on+0x20/0xc0
[   13.369963]  ? __pfx_kthread+0x10/0x10
[   13.369983]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.370004]  ? calculate_sigpending+0x7b/0xa0
[   13.370041]  ? __pfx_kthread+0x10/0x10
[   13.370062]  ret_from_fork+0x116/0x1d0
[   13.370081]  ? __pfx_kthread+0x10/0x10
[   13.370100]  ret_from_fork_asm+0x1a/0x30
[   13.370132]  </TASK>
[   13.370144] 
[   13.380286] Allocated by task 258:
[   13.380450]  kasan_save_stack+0x45/0x70
[   13.380675]  kasan_save_track+0x18/0x40
[   13.380918]  kasan_save_alloc_info+0x3b/0x50
[   13.381164]  __kasan_mempool_unpoison_object+0x1a9/0x200
[   13.381794]  remove_element+0x11e/0x190
[   13.382125]  mempool_alloc_preallocated+0x4d/0x90
[   13.382284]  mempool_kmalloc_invalid_free_helper+0x83/0x2e0
[   13.382456]  mempool_kmalloc_invalid_free+0xed/0x140
[   13.382613]  kunit_try_run_case+0x1a5/0x480
[   13.383197]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.383471]  kthread+0x337/0x6f0
[   13.383707]  ret_from_fork+0x116/0x1d0
[   13.383947]  ret_from_fork_asm+0x1a/0x30
[   13.384271] 
[   13.384373] The buggy address belongs to the object at ffff8881027e1500
[   13.384373]  which belongs to the cache kmalloc-128 of size 128
[   13.384940] The buggy address is located 1 bytes inside of
[   13.384940]  128-byte region [ffff8881027e1500, ffff8881027e1580)
[   13.385269] 
[   13.385342] The buggy address belongs to the physical page:
[   13.385617] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1027e1
[   13.386369] flags: 0x200000000000000(node=0|zone=2)
[   13.386641] page_type: f5(slab)
[   13.386922] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   13.387270] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   13.387503] page dumped because: kasan: bad access detected
[   13.387727] 
[   13.387819] Memory state around the buggy address:
[   13.388057]  ffff8881027e1400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   13.388384]  ffff8881027e1480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.388612] >ffff8881027e1500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.388976]                    ^
[   13.389162]  ffff8881027e1580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.389422]  ffff8881027e1600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.389629] ==================================================================