Date
July 25, 2025, 3:13 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 34.478774] ================================================================== [ 34.479304] BUG: KASAN: double-free in mempool_double_free_helper+0x150/0x2e8 [ 34.479783] Free of addr fff00000c9b8c000 by task kunit_try_catch/271 [ 34.480326] [ 34.480609] CPU: 0 UID: 0 PID: 271 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250725 #1 PREEMPT [ 34.481836] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 34.482281] Hardware name: linux,dummy-virt (DT) [ 34.482500] Call trace: [ 34.482611] show_stack+0x20/0x38 (C) [ 34.483013] dump_stack_lvl+0x8c/0xd0 [ 34.483212] print_report+0x118/0x5e8 [ 34.483562] kasan_report_invalid_free+0xc0/0xe8 [ 34.483855] __kasan_mempool_poison_pages+0xe0/0xe8 [ 34.484235] mempool_free+0x3ac/0x5f0 [ 34.484590] mempool_double_free_helper+0x150/0x2e8 [ 34.484653] mempool_page_alloc_double_free+0xbc/0x118 [ 34.484712] kunit_try_run_case+0x170/0x3f0 [ 34.484761] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.486259] kthread+0x328/0x630 [ 34.486863] ret_from_fork+0x10/0x20 [ 34.487284] [ 34.487313] The buggy address belongs to the physical page: [ 34.487351] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109b8c [ 34.488130] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.488422] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 34.488517] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 34.488705] page dumped because: kasan: bad access detected [ 34.489205] [ 34.489315] Memory state around the buggy address: [ 34.489355] fff00000c9b8bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.489402] fff00000c9b8bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.489960] >fff00000c9b8c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.490341] ^ [ 34.490779] fff00000c9b8c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.491285] fff00000c9b8c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.491558] ================================================================== [ 34.454098] ================================================================== [ 34.454164] BUG: KASAN: double-free in mempool_double_free_helper+0x150/0x2e8 [ 34.454224] Free of addr fff00000c9b8c000 by task kunit_try_catch/269 [ 34.454784] [ 34.454984] CPU: 0 UID: 0 PID: 269 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250725 #1 PREEMPT [ 34.455178] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 34.455234] Hardware name: linux,dummy-virt (DT) [ 34.455345] Call trace: [ 34.455410] show_stack+0x20/0x38 (C) [ 34.455519] dump_stack_lvl+0x8c/0xd0 [ 34.455590] print_report+0x118/0x5e8 [ 34.455635] kasan_report_invalid_free+0xc0/0xe8 [ 34.455691] __kasan_mempool_poison_object+0x14c/0x150 [ 34.455741] mempool_free+0x3f4/0x5f0 [ 34.455956] mempool_double_free_helper+0x150/0x2e8 [ 34.456108] mempool_kmalloc_large_double_free+0xc0/0x118 [ 34.456210] kunit_try_run_case+0x170/0x3f0 [ 34.456277] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.456428] kthread+0x328/0x630 [ 34.456471] ret_from_fork+0x10/0x20 [ 34.456841] [ 34.456950] The buggy address belongs to the physical page: [ 34.457023] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109b8c [ 34.457081] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 34.457129] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 34.457232] page_type: f8(unknown) [ 34.457273] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 34.457401] raw: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 34.457548] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 34.457596] head: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 34.457654] head: 0bfffe0000000002 ffffc1ffc326e301 00000000ffffffff 00000000ffffffff [ 34.457704] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 34.457770] page dumped because: kasan: bad access detected [ 34.457903] [ 34.457921] Memory state around the buggy address: [ 34.458008] fff00000c9b8bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.458173] fff00000c9b8bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.458217] >fff00000c9b8c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.458255] ^ [ 34.458284] fff00000c9b8c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.458370] fff00000c9b8c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.458409] ================================================================== [ 34.438055] ================================================================== [ 34.438126] BUG: KASAN: double-free in mempool_double_free_helper+0x150/0x2e8 [ 34.438191] Free of addr fff00000c9a8b000 by task kunit_try_catch/267 [ 34.438234] [ 34.438273] CPU: 0 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250725 #1 PREEMPT [ 34.438365] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 34.438393] Hardware name: linux,dummy-virt (DT) [ 34.438425] Call trace: [ 34.438449] show_stack+0x20/0x38 (C) [ 34.438677] dump_stack_lvl+0x8c/0xd0 [ 34.438756] print_report+0x118/0x5e8 [ 34.439033] kasan_report_invalid_free+0xc0/0xe8 [ 34.439500] check_slab_allocation+0xd4/0x108 [ 34.439552] __kasan_mempool_poison_object+0x78/0x150 [ 34.439651] mempool_free+0x3f4/0x5f0 [ 34.439703] mempool_double_free_helper+0x150/0x2e8 [ 34.439914] mempool_kmalloc_double_free+0xc0/0x118 [ 34.440027] kunit_try_run_case+0x170/0x3f0 [ 34.440226] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.440317] kthread+0x328/0x630 [ 34.440359] ret_from_fork+0x10/0x20 [ 34.440419] [ 34.440439] Allocated by task 267: [ 34.440558] kasan_save_stack+0x3c/0x68 [ 34.440610] kasan_save_track+0x20/0x40 [ 34.440658] kasan_save_alloc_info+0x40/0x58 [ 34.440699] __kasan_mempool_unpoison_object+0x11c/0x180 [ 34.440848] remove_element+0x130/0x1f8 [ 34.440986] mempool_alloc_preallocated+0x58/0xc0 [ 34.441110] mempool_double_free_helper+0x94/0x2e8 [ 34.441169] mempool_kmalloc_double_free+0xc0/0x118 [ 34.441490] kunit_try_run_case+0x170/0x3f0 [ 34.441756] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.441809] kthread+0x328/0x630 [ 34.441892] ret_from_fork+0x10/0x20 [ 34.441930] [ 34.442002] Freed by task 267: [ 34.442084] kasan_save_stack+0x3c/0x68 [ 34.442121] kasan_save_track+0x20/0x40 [ 34.442183] kasan_save_free_info+0x4c/0x78 [ 34.442219] __kasan_mempool_poison_object+0xc0/0x150 [ 34.442305] mempool_free+0x3f4/0x5f0 [ 34.442488] mempool_double_free_helper+0x100/0x2e8 [ 34.442532] mempool_kmalloc_double_free+0xc0/0x118 [ 34.442573] kunit_try_run_case+0x170/0x3f0 [ 34.442610] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.442691] kthread+0x328/0x630 [ 34.442724] ret_from_fork+0x10/0x20 [ 34.442839] [ 34.442859] The buggy address belongs to the object at fff00000c9a8b000 [ 34.442859] which belongs to the cache kmalloc-128 of size 128 [ 34.443027] The buggy address is located 0 bytes inside of [ 34.443027] 128-byte region [fff00000c9a8b000, fff00000c9a8b080) [ 34.443087] [ 34.443110] The buggy address belongs to the physical page: [ 34.443147] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109a8b [ 34.443474] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.443549] page_type: f5(slab) [ 34.443593] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 34.443654] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 34.443733] page dumped because: kasan: bad access detected [ 34.443769] [ 34.443943] Memory state around the buggy address: [ 34.444036] fff00000c9a8af00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 34.444080] fff00000c9a8af80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 34.444123] >fff00000c9a8b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.444163] ^ [ 34.444409] fff00000c9a8b080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.444456] fff00000c9a8b100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 34.444542] ==================================================================
[ 27.549593] ================================================================== [ 27.550360] BUG: KASAN: double-free in mempool_double_free_helper+0x184/0x370 [ 27.550686] Free of addr ffff888106370000 by task kunit_try_catch/288 [ 27.551027] [ 27.551302] CPU: 0 UID: 0 PID: 288 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) [ 27.551356] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.551370] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.551393] Call Trace: [ 27.551407] <TASK> [ 27.551424] dump_stack_lvl+0x73/0xb0 [ 27.551454] print_report+0xd1/0x640 [ 27.551478] ? __virt_addr_valid+0x1db/0x2d0 [ 27.551504] ? kasan_addr_to_slab+0x11/0xa0 [ 27.551526] ? mempool_double_free_helper+0x184/0x370 [ 27.551551] kasan_report_invalid_free+0x10a/0x130 [ 27.551577] ? mempool_double_free_helper+0x184/0x370 [ 27.551604] ? mempool_double_free_helper+0x184/0x370 [ 27.551629] __kasan_mempool_poison_pages+0x115/0x130 [ 27.551655] mempool_free+0x430/0x640 [ 27.551682] mempool_double_free_helper+0x184/0x370 [ 27.551707] ? __pfx_mempool_double_free_helper+0x10/0x10 [ 27.551735] ? finish_task_switch.isra.0+0x153/0x700 [ 27.551762] mempool_page_alloc_double_free+0xe8/0x140 [ 27.551835] ? __pfx_mempool_page_alloc_double_free+0x10/0x10 [ 27.551869] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 27.551893] ? __pfx_mempool_free_pages+0x10/0x10 [ 27.551920] ? __pfx_read_tsc+0x10/0x10 [ 27.551957] ? ktime_get_ts64+0x86/0x230 [ 27.551981] kunit_try_run_case+0x1a5/0x480 [ 27.552007] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.552031] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.552063] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.552091] ? __kthread_parkme+0x82/0x180 [ 27.552112] ? preempt_count_sub+0x50/0x80 [ 27.552136] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.552161] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.552185] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.552210] kthread+0x337/0x6f0 [ 27.552231] ? trace_preempt_on+0x20/0xc0 [ 27.552255] ? __pfx_kthread+0x10/0x10 [ 27.552276] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.552301] ? calculate_sigpending+0x7b/0xa0 [ 27.552326] ? __pfx_kthread+0x10/0x10 [ 27.552349] ret_from_fork+0x116/0x1d0 [ 27.552370] ? __pfx_kthread+0x10/0x10 [ 27.552391] ret_from_fork_asm+0x1a/0x30 [ 27.552425] </TASK> [ 27.552436] [ 27.560859] The buggy address belongs to the physical page: [ 27.561139] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106370 [ 27.561390] flags: 0x200000000000000(node=0|zone=2) [ 27.561568] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 27.562147] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 27.562505] page dumped because: kasan: bad access detected [ 27.562758] [ 27.563004] Memory state around the buggy address: [ 27.563329] ffff88810636ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.563588] ffff88810636ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.563920] >ffff888106370000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.564276] ^ [ 27.564433] ffff888106370080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.564703] ffff888106370100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.565081] ================================================================== [ 27.520205] ================================================================== [ 27.520804] BUG: KASAN: double-free in mempool_double_free_helper+0x184/0x370 [ 27.521291] Free of addr ffff888106370000 by task kunit_try_catch/286 [ 27.521579] [ 27.521674] CPU: 0 UID: 0 PID: 286 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) [ 27.521727] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.521740] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.521763] Call Trace: [ 27.521776] <TASK> [ 27.521793] dump_stack_lvl+0x73/0xb0 [ 27.521825] print_report+0xd1/0x640 [ 27.521849] ? __virt_addr_valid+0x1db/0x2d0 [ 27.521875] ? kasan_addr_to_slab+0x11/0xa0 [ 27.521897] ? mempool_double_free_helper+0x184/0x370 [ 27.521922] kasan_report_invalid_free+0x10a/0x130 [ 27.521958] ? mempool_double_free_helper+0x184/0x370 [ 27.521986] ? mempool_double_free_helper+0x184/0x370 [ 27.522010] __kasan_mempool_poison_object+0x1b3/0x1d0 [ 27.522036] mempool_free+0x490/0x640 [ 27.522064] mempool_double_free_helper+0x184/0x370 [ 27.522089] ? __pfx_mempool_double_free_helper+0x10/0x10 [ 27.522421] ? dequeue_entities+0x23f/0x1630 [ 27.522449] ? __kasan_check_write+0x18/0x20 [ 27.522474] ? __pfx_sched_clock_cpu+0x10/0x10 [ 27.522497] ? finish_task_switch.isra.0+0x153/0x700 [ 27.522527] mempool_kmalloc_large_double_free+0xed/0x140 [ 27.522556] ? __pfx_mempool_kmalloc_large_double_free+0x10/0x10 [ 27.522585] ? __pfx_mempool_kmalloc+0x10/0x10 [ 27.522610] ? __pfx_mempool_kfree+0x10/0x10 [ 27.522636] ? __pfx_read_tsc+0x10/0x10 [ 27.522660] ? ktime_get_ts64+0x86/0x230 [ 27.522685] kunit_try_run_case+0x1a5/0x480 [ 27.522712] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.522736] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.522759] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.522787] ? __kthread_parkme+0x82/0x180 [ 27.522808] ? preempt_count_sub+0x50/0x80 [ 27.522832] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.522857] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.522882] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.522907] kthread+0x337/0x6f0 [ 27.522927] ? trace_preempt_on+0x20/0xc0 [ 27.522963] ? __pfx_kthread+0x10/0x10 [ 27.522984] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.523017] ? calculate_sigpending+0x7b/0xa0 [ 27.523042] ? __pfx_kthread+0x10/0x10 [ 27.523076] ret_from_fork+0x116/0x1d0 [ 27.523097] ? __pfx_kthread+0x10/0x10 [ 27.523118] ret_from_fork_asm+0x1a/0x30 [ 27.523150] </TASK> [ 27.523162] [ 27.536655] The buggy address belongs to the physical page: [ 27.536974] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106370 [ 27.537654] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 27.538211] flags: 0x200000000000040(head|node=0|zone=2) [ 27.538559] page_type: f8(unknown) [ 27.538749] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 27.539318] raw: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 27.539756] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 27.540302] head: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 27.540656] head: 0200000000000002 ffffea000418dc01 00000000ffffffff 00000000ffffffff [ 27.541310] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 27.541622] page dumped because: kasan: bad access detected [ 27.542132] [ 27.542245] Memory state around the buggy address: [ 27.542446] ffff88810636ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.542903] ffff88810636ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.543433] >ffff888106370000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.543759] ^ [ 27.543999] ffff888106370080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.544562] ffff888106370100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.545098] ================================================================== [ 27.487680] ================================================================== [ 27.488427] BUG: KASAN: double-free in mempool_double_free_helper+0x184/0x370 [ 27.488756] Free of addr ffff888106253400 by task kunit_try_catch/284 [ 27.489295] [ 27.489404] CPU: 1 UID: 0 PID: 284 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) [ 27.489456] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.489470] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.489493] Call Trace: [ 27.489505] <TASK> [ 27.489523] dump_stack_lvl+0x73/0xb0 [ 27.489559] print_report+0xd1/0x640 [ 27.489583] ? __virt_addr_valid+0x1db/0x2d0 [ 27.489610] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.489637] ? mempool_double_free_helper+0x184/0x370 [ 27.489663] kasan_report_invalid_free+0x10a/0x130 [ 27.489689] ? mempool_double_free_helper+0x184/0x370 [ 27.489715] ? mempool_double_free_helper+0x184/0x370 [ 27.489739] ? mempool_double_free_helper+0x184/0x370 [ 27.489763] check_slab_allocation+0x101/0x130 [ 27.489786] __kasan_mempool_poison_object+0x91/0x1d0 [ 27.489863] mempool_free+0x490/0x640 [ 27.489897] mempool_double_free_helper+0x184/0x370 [ 27.489923] ? __pfx_mempool_double_free_helper+0x10/0x10 [ 27.489962] ? update_load_avg+0x1be/0x21b0 [ 27.489990] ? finish_task_switch.isra.0+0x153/0x700 [ 27.490016] mempool_kmalloc_double_free+0xed/0x140 [ 27.490040] ? __pfx_mempool_kmalloc_double_free+0x10/0x10 [ 27.490076] ? __pfx_mempool_kmalloc+0x10/0x10 [ 27.490100] ? __pfx_mempool_kfree+0x10/0x10 [ 27.490125] ? __pfx_read_tsc+0x10/0x10 [ 27.490149] ? ktime_get_ts64+0x86/0x230 [ 27.490174] kunit_try_run_case+0x1a5/0x480 [ 27.490201] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.490225] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.490248] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.490274] ? __kthread_parkme+0x82/0x180 [ 27.490295] ? preempt_count_sub+0x50/0x80 [ 27.490319] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.490344] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.490370] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.490395] kthread+0x337/0x6f0 [ 27.490415] ? trace_preempt_on+0x20/0xc0 [ 27.490439] ? __pfx_kthread+0x10/0x10 [ 27.490461] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.490486] ? calculate_sigpending+0x7b/0xa0 [ 27.490512] ? __pfx_kthread+0x10/0x10 [ 27.490533] ret_from_fork+0x116/0x1d0 [ 27.490554] ? __pfx_kthread+0x10/0x10 [ 27.490575] ret_from_fork_asm+0x1a/0x30 [ 27.490607] </TASK> [ 27.490619] [ 27.499553] Allocated by task 284: [ 27.499735] kasan_save_stack+0x45/0x70 [ 27.500176] kasan_save_track+0x18/0x40 [ 27.500350] kasan_save_alloc_info+0x3b/0x50 [ 27.500501] __kasan_mempool_unpoison_object+0x1a9/0x200 [ 27.500754] remove_element+0x11e/0x190 [ 27.500958] mempool_alloc_preallocated+0x4d/0x90 [ 27.501257] mempool_double_free_helper+0x8a/0x370 [ 27.501448] mempool_kmalloc_double_free+0xed/0x140 [ 27.501679] kunit_try_run_case+0x1a5/0x480 [ 27.501959] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.502276] kthread+0x337/0x6f0 [ 27.502434] ret_from_fork+0x116/0x1d0 [ 27.502605] ret_from_fork_asm+0x1a/0x30 [ 27.502834] [ 27.502925] Freed by task 284: [ 27.503073] kasan_save_stack+0x45/0x70 [ 27.503267] kasan_save_track+0x18/0x40 [ 27.503409] kasan_save_free_info+0x3f/0x60 [ 27.503555] __kasan_mempool_poison_object+0x131/0x1d0 [ 27.503724] mempool_free+0x490/0x640 [ 27.504975] mempool_double_free_helper+0x109/0x370 [ 27.505710] mempool_kmalloc_double_free+0xed/0x140 [ 27.506583] kunit_try_run_case+0x1a5/0x480 [ 27.507343] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.508165] kthread+0x337/0x6f0 [ 27.508647] ret_from_fork+0x116/0x1d0 [ 27.508864] ret_from_fork_asm+0x1a/0x30 [ 27.509031] [ 27.509121] The buggy address belongs to the object at ffff888106253400 [ 27.509121] which belongs to the cache kmalloc-128 of size 128 [ 27.509642] The buggy address is located 0 bytes inside of [ 27.509642] 128-byte region [ffff888106253400, ffff888106253480) [ 27.510143] [ 27.510236] The buggy address belongs to the physical page: [ 27.510479] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106253 [ 27.510837] flags: 0x200000000000000(node=0|zone=2) [ 27.511694] page_type: f5(slab) [ 27.512186] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 27.512634] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 27.513189] page dumped because: kasan: bad access detected [ 27.513513] [ 27.513608] Memory state around the buggy address: [ 27.514110] ffff888106253300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.514485] ffff888106253380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.515026] >ffff888106253400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.515344] ^ [ 27.515508] ffff888106253480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.516236] ffff888106253500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 27.516678] ==================================================================