Date
July 13, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.371697] ================================================================== [ 16.371767] BUG: KASAN: slab-use-after-free in workqueue_uaf+0x480/0x4a8 [ 16.371823] Read of size 8 at addr fff00000c654b900 by task kunit_try_catch/201 [ 16.371872] [ 16.371908] CPU: 0 UID: 0 PID: 201 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.371991] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.372016] Hardware name: linux,dummy-virt (DT) [ 16.372048] Call trace: [ 16.372276] show_stack+0x20/0x38 (C) [ 16.372431] dump_stack_lvl+0x8c/0xd0 [ 16.372748] print_report+0x118/0x5d0 [ 16.373322] kasan_report+0xdc/0x128 [ 16.373381] __asan_report_load8_noabort+0x20/0x30 [ 16.373434] workqueue_uaf+0x480/0x4a8 [ 16.373477] kunit_try_run_case+0x170/0x3f0 [ 16.373525] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.374304] kthread+0x328/0x630 [ 16.374570] ret_from_fork+0x10/0x20 [ 16.374924] [ 16.374948] Allocated by task 201: [ 16.374977] kasan_save_stack+0x3c/0x68 [ 16.375444] kasan_save_track+0x20/0x40 [ 16.375775] kasan_save_alloc_info+0x40/0x58 [ 16.375823] __kasan_kmalloc+0xd4/0xd8 [ 16.375861] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.375902] workqueue_uaf+0x13c/0x4a8 [ 16.375939] kunit_try_run_case+0x170/0x3f0 [ 16.376361] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.376622] kthread+0x328/0x630 [ 16.376665] ret_from_fork+0x10/0x20 [ 16.376811] [ 16.376830] Freed by task 9: [ 16.377036] kasan_save_stack+0x3c/0x68 [ 16.377220] kasan_save_track+0x20/0x40 [ 16.377260] kasan_save_free_info+0x4c/0x78 [ 16.377301] __kasan_slab_free+0x6c/0x98 [ 16.377510] kfree+0x214/0x3c8 [ 16.377799] workqueue_uaf_work+0x18/0x30 [ 16.377846] process_one_work+0x530/0xf98 [ 16.378064] worker_thread+0x618/0xf38 [ 16.378103] kthread+0x328/0x630 [ 16.378137] ret_from_fork+0x10/0x20 [ 16.378521] [ 16.378551] Last potentially related work creation: [ 16.378696] kasan_save_stack+0x3c/0x68 [ 16.379147] kasan_record_aux_stack+0xb4/0xc8 [ 16.379436] __queue_work+0x65c/0x1008 [ 16.379477] queue_work_on+0xbc/0xf8 [ 16.380042] workqueue_uaf+0x210/0x4a8 [ 16.380089] kunit_try_run_case+0x170/0x3f0 [ 16.380129] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.380411] kthread+0x328/0x630 [ 16.380865] ret_from_fork+0x10/0x20 [ 16.380910] [ 16.380931] The buggy address belongs to the object at fff00000c654b900 [ 16.380931] which belongs to the cache kmalloc-32 of size 32 [ 16.381330] The buggy address is located 0 bytes inside of [ 16.381330] freed 32-byte region [fff00000c654b900, fff00000c654b920) [ 16.381700] [ 16.381827] The buggy address belongs to the physical page: [ 16.381989] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10654b [ 16.382358] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.382623] page_type: f5(slab) [ 16.382667] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 16.382826] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 16.383128] page dumped because: kasan: bad access detected [ 16.383319] [ 16.383518] Memory state around the buggy address: [ 16.383558] fff00000c654b800: 00 00 03 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 16.383610] fff00000c654b880: 00 00 00 fc fc fc fc fc 00 00 00 07 fc fc fc fc [ 16.383652] >fff00000c654b900: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 16.383911] ^ [ 16.383956] fff00000c654b980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.384607] fff00000c654ba00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.384652] ==================================================================
[ 17.032907] ================================================================== [ 17.033088] BUG: KASAN: slab-use-after-free in workqueue_uaf+0x480/0x4a8 [ 17.033195] Read of size 8 at addr fff00000c5ac9280 by task kunit_try_catch/201 [ 17.033247] [ 17.033283] CPU: 1 UID: 0 PID: 201 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.033506] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.033534] Hardware name: linux,dummy-virt (DT) [ 17.033567] Call trace: [ 17.033706] show_stack+0x20/0x38 (C) [ 17.033891] dump_stack_lvl+0x8c/0xd0 [ 17.033949] print_report+0x118/0x5d0 [ 17.034000] kasan_report+0xdc/0x128 [ 17.034052] __asan_report_load8_noabort+0x20/0x30 [ 17.034219] workqueue_uaf+0x480/0x4a8 [ 17.034311] kunit_try_run_case+0x170/0x3f0 [ 17.034608] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.034671] kthread+0x328/0x630 [ 17.034744] ret_from_fork+0x10/0x20 [ 17.034795] [ 17.034813] Allocated by task 201: [ 17.034880] kasan_save_stack+0x3c/0x68 [ 17.035026] kasan_save_track+0x20/0x40 [ 17.035155] kasan_save_alloc_info+0x40/0x58 [ 17.035220] __kasan_kmalloc+0xd4/0xd8 [ 17.035261] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.035305] workqueue_uaf+0x13c/0x4a8 [ 17.035405] kunit_try_run_case+0x170/0x3f0 [ 17.035843] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.035922] kthread+0x328/0x630 [ 17.036005] ret_from_fork+0x10/0x20 [ 17.036172] [ 17.036316] Freed by task 48: [ 17.036347] kasan_save_stack+0x3c/0x68 [ 17.036412] kasan_save_track+0x20/0x40 [ 17.036458] kasan_save_free_info+0x4c/0x78 [ 17.036808] __kasan_slab_free+0x6c/0x98 [ 17.036955] kfree+0x214/0x3c8 [ 17.037051] workqueue_uaf_work+0x18/0x30 [ 17.037173] process_one_work+0x530/0xf98 [ 17.037221] worker_thread+0x618/0xf38 [ 17.037293] kthread+0x328/0x630 [ 17.037753] ret_from_fork+0x10/0x20 [ 17.037822] [ 17.037923] Last potentially related work creation: [ 17.038021] kasan_save_stack+0x3c/0x68 [ 17.038079] kasan_record_aux_stack+0xb4/0xc8 [ 17.038428] __queue_work+0x65c/0x1008 [ 17.038582] queue_work_on+0xbc/0xf8 [ 17.038680] workqueue_uaf+0x210/0x4a8 [ 17.038774] kunit_try_run_case+0x170/0x3f0 [ 17.038881] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.038928] kthread+0x328/0x630 [ 17.038961] ret_from_fork+0x10/0x20 [ 17.038999] [ 17.039030] The buggy address belongs to the object at fff00000c5ac9280 [ 17.039030] which belongs to the cache kmalloc-32 of size 32 [ 17.039094] The buggy address is located 0 bytes inside of [ 17.039094] freed 32-byte region [fff00000c5ac9280, fff00000c5ac92a0) [ 17.039158] [ 17.039195] The buggy address belongs to the physical page: [ 17.039240] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105ac9 [ 17.039311] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.039367] page_type: f5(slab) [ 17.039413] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 17.039640] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 17.039914] page dumped because: kasan: bad access detected [ 17.039975] [ 17.040087] Memory state around the buggy address: [ 17.040177] fff00000c5ac9180: 00 00 03 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 17.040338] fff00000c5ac9200: 00 00 00 fc fc fc fc fc 00 00 00 07 fc fc fc fc [ 17.040406] >fff00000c5ac9280: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 17.040445] ^ [ 17.040718] fff00000c5ac9300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.040952] fff00000c5ac9380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.041089] ==================================================================
[ 13.269938] ================================================================== [ 13.270495] BUG: KASAN: slab-use-after-free in workqueue_uaf+0x4d6/0x560 [ 13.270729] Read of size 8 at addr ffff8881034327c0 by task kunit_try_catch/217 [ 13.270953] [ 13.271046] CPU: 1 UID: 0 PID: 217 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.271090] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.271101] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.271122] Call Trace: [ 13.271134] <TASK> [ 13.271151] dump_stack_lvl+0x73/0xb0 [ 13.271181] print_report+0xd1/0x610 [ 13.271203] ? __virt_addr_valid+0x1db/0x2d0 [ 13.271226] ? workqueue_uaf+0x4d6/0x560 [ 13.271246] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.271268] ? workqueue_uaf+0x4d6/0x560 [ 13.271290] kasan_report+0x141/0x180 [ 13.271310] ? workqueue_uaf+0x4d6/0x560 [ 13.271335] __asan_report_load8_noabort+0x18/0x20 [ 13.271358] workqueue_uaf+0x4d6/0x560 [ 13.271379] ? __pfx_workqueue_uaf+0x10/0x10 [ 13.271400] ? __schedule+0x10cc/0x2b60 [ 13.271422] ? __pfx_read_tsc+0x10/0x10 [ 13.271442] ? ktime_get_ts64+0x86/0x230 [ 13.271489] kunit_try_run_case+0x1a5/0x480 [ 13.271514] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.271535] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.271558] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.271580] ? __kthread_parkme+0x82/0x180 [ 13.271600] ? preempt_count_sub+0x50/0x80 [ 13.271623] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.271646] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.271668] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.271691] kthread+0x337/0x6f0 [ 13.271709] ? trace_preempt_on+0x20/0xc0 [ 13.271732] ? __pfx_kthread+0x10/0x10 [ 13.271751] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.271771] ? calculate_sigpending+0x7b/0xa0 [ 13.271794] ? __pfx_kthread+0x10/0x10 [ 13.271814] ret_from_fork+0x116/0x1d0 [ 13.271832] ? __pfx_kthread+0x10/0x10 [ 13.271851] ret_from_fork_asm+0x1a/0x30 [ 13.271880] </TASK> [ 13.271890] [ 13.287297] Allocated by task 217: [ 13.287667] kasan_save_stack+0x45/0x70 [ 13.288156] kasan_save_track+0x18/0x40 [ 13.288602] kasan_save_alloc_info+0x3b/0x50 [ 13.289009] __kasan_kmalloc+0xb7/0xc0 [ 13.289240] __kmalloc_cache_noprof+0x189/0x420 [ 13.289403] workqueue_uaf+0x152/0x560 [ 13.289813] kunit_try_run_case+0x1a5/0x480 [ 13.290215] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.290794] kthread+0x337/0x6f0 [ 13.291121] ret_from_fork+0x116/0x1d0 [ 13.291540] ret_from_fork_asm+0x1a/0x30 [ 13.291991] [ 13.292119] Freed by task 41: [ 13.292230] kasan_save_stack+0x45/0x70 [ 13.292372] kasan_save_track+0x18/0x40 [ 13.292558] kasan_save_free_info+0x3f/0x60 [ 13.292956] __kasan_slab_free+0x56/0x70 [ 13.293422] kfree+0x222/0x3f0 [ 13.293737] workqueue_uaf_work+0x12/0x20 [ 13.294167] process_one_work+0x5ee/0xf60 [ 13.294574] worker_thread+0x758/0x1220 [ 13.294994] kthread+0x337/0x6f0 [ 13.295370] ret_from_fork+0x116/0x1d0 [ 13.295816] ret_from_fork_asm+0x1a/0x30 [ 13.296207] [ 13.296388] Last potentially related work creation: [ 13.296883] kasan_save_stack+0x45/0x70 [ 13.297313] kasan_record_aux_stack+0xb2/0xc0 [ 13.297574] __queue_work+0x626/0xeb0 [ 13.297751] queue_work_on+0xb6/0xc0 [ 13.297985] workqueue_uaf+0x26d/0x560 [ 13.298356] kunit_try_run_case+0x1a5/0x480 [ 13.298790] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.299005] kthread+0x337/0x6f0 [ 13.299336] ret_from_fork+0x116/0x1d0 [ 13.299742] ret_from_fork_asm+0x1a/0x30 [ 13.300144] [ 13.300299] The buggy address belongs to the object at ffff8881034327c0 [ 13.300299] which belongs to the cache kmalloc-32 of size 32 [ 13.301384] The buggy address is located 0 bytes inside of [ 13.301384] freed 32-byte region [ffff8881034327c0, ffff8881034327e0) [ 13.302309] [ 13.302387] The buggy address belongs to the physical page: [ 13.302965] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103432 [ 13.303760] flags: 0x200000000000000(node=0|zone=2) [ 13.304214] page_type: f5(slab) [ 13.304415] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 13.305063] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 13.305291] page dumped because: kasan: bad access detected [ 13.305563] [ 13.305767] Memory state around the buggy address: [ 13.306247] ffff888103432680: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 13.306999] ffff888103432700: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 13.307652] >ffff888103432780: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 13.308272] ^ [ 13.308854] ffff888103432800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.309370] ffff888103432880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.310085] ==================================================================
[ 13.466547] ================================================================== [ 13.466991] BUG: KASAN: slab-use-after-free in workqueue_uaf+0x4d6/0x560 [ 13.467685] Read of size 8 at addr ffff8881025a2000 by task kunit_try_catch/218 [ 13.468082] [ 13.468189] CPU: 0 UID: 0 PID: 218 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.468233] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.468245] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.468267] Call Trace: [ 13.468290] <TASK> [ 13.468305] dump_stack_lvl+0x73/0xb0 [ 13.468337] print_report+0xd1/0x610 [ 13.468372] ? __virt_addr_valid+0x1db/0x2d0 [ 13.468396] ? workqueue_uaf+0x4d6/0x560 [ 13.468417] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.468441] ? workqueue_uaf+0x4d6/0x560 [ 13.468464] kasan_report+0x141/0x180 [ 13.468495] ? workqueue_uaf+0x4d6/0x560 [ 13.468522] __asan_report_load8_noabort+0x18/0x20 [ 13.468547] workqueue_uaf+0x4d6/0x560 [ 13.468580] ? __pfx_workqueue_uaf+0x10/0x10 [ 13.468603] ? __schedule+0x10cc/0x2b60 [ 13.468626] ? __pfx_read_tsc+0x10/0x10 [ 13.468647] ? ktime_get_ts64+0x86/0x230 [ 13.468674] kunit_try_run_case+0x1a5/0x480 [ 13.468756] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.468783] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.468808] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.468832] ? __kthread_parkme+0x82/0x180 [ 13.468854] ? preempt_count_sub+0x50/0x80 [ 13.468879] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.468904] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.468929] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.468954] kthread+0x337/0x6f0 [ 13.468973] ? trace_preempt_on+0x20/0xc0 [ 13.468998] ? __pfx_kthread+0x10/0x10 [ 13.469019] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.469041] ? calculate_sigpending+0x7b/0xa0 [ 13.469077] ? __pfx_kthread+0x10/0x10 [ 13.469098] ret_from_fork+0x116/0x1d0 [ 13.469126] ? __pfx_kthread+0x10/0x10 [ 13.469147] ret_from_fork_asm+0x1a/0x30 [ 13.469178] </TASK> [ 13.469188] [ 13.477475] Allocated by task 218: [ 13.477611] kasan_save_stack+0x45/0x70 [ 13.478089] kasan_save_track+0x18/0x40 [ 13.478255] kasan_save_alloc_info+0x3b/0x50 [ 13.478407] __kasan_kmalloc+0xb7/0xc0 [ 13.478568] __kmalloc_cache_noprof+0x189/0x420 [ 13.479043] workqueue_uaf+0x152/0x560 [ 13.479436] kunit_try_run_case+0x1a5/0x480 [ 13.479638] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.479859] kthread+0x337/0x6f0 [ 13.480029] ret_from_fork+0x116/0x1d0 [ 13.480318] ret_from_fork_asm+0x1a/0x30 [ 13.480482] [ 13.480605] Freed by task 9: [ 13.480789] kasan_save_stack+0x45/0x70 [ 13.481002] kasan_save_track+0x18/0x40 [ 13.481291] kasan_save_free_info+0x3f/0x60 [ 13.481508] __kasan_slab_free+0x56/0x70 [ 13.481718] kfree+0x222/0x3f0 [ 13.482000] workqueue_uaf_work+0x12/0x20 [ 13.482184] process_one_work+0x5ee/0xf60 [ 13.482464] worker_thread+0x758/0x1220 [ 13.482613] kthread+0x337/0x6f0 [ 13.482738] ret_from_fork+0x116/0x1d0 [ 13.482887] ret_from_fork_asm+0x1a/0x30 [ 13.483195] [ 13.483293] Last potentially related work creation: [ 13.483631] kasan_save_stack+0x45/0x70 [ 13.484011] kasan_record_aux_stack+0xb2/0xc0 [ 13.484351] __queue_work+0x626/0xeb0 [ 13.484528] queue_work_on+0xb6/0xc0 [ 13.484737] workqueue_uaf+0x26d/0x560 [ 13.484976] kunit_try_run_case+0x1a5/0x480 [ 13.485214] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.485424] kthread+0x337/0x6f0 [ 13.485617] ret_from_fork+0x116/0x1d0 [ 13.485950] ret_from_fork_asm+0x1a/0x30 [ 13.486222] [ 13.486321] The buggy address belongs to the object at ffff8881025a2000 [ 13.486321] which belongs to the cache kmalloc-32 of size 32 [ 13.486918] The buggy address is located 0 bytes inside of [ 13.486918] freed 32-byte region [ffff8881025a2000, ffff8881025a2020) [ 13.487312] [ 13.487426] The buggy address belongs to the physical page: [ 13.487692] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1025a2 [ 13.487998] flags: 0x200000000000000(node=0|zone=2) [ 13.488605] page_type: f5(slab) [ 13.488839] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 13.489222] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 13.489484] page dumped because: kasan: bad access detected [ 13.489870] [ 13.489973] Memory state around the buggy address: [ 13.490315] ffff8881025a1f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.490534] ffff8881025a1f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.491027] >ffff8881025a2000: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 13.491388] ^ [ 13.491537] ffff8881025a2080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.491887] ffff8881025a2100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.492314] ==================================================================