Date
July 5, 2025, 5:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.200520] ================================================================== [ 20.200605] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 20.200689] Read of size 1 at addr fff00000c7964000 by task kunit_try_catch/233 [ 20.200850] [ 20.200908] CPU: 0 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 20.200993] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.201019] Hardware name: linux,dummy-virt (DT) [ 20.201072] Call trace: [ 20.201121] show_stack+0x20/0x38 (C) [ 20.201176] dump_stack_lvl+0x8c/0xd0 [ 20.201244] print_report+0x118/0x608 [ 20.201290] kasan_report+0xdc/0x128 [ 20.201363] __asan_report_load1_noabort+0x20/0x30 [ 20.201421] mempool_uaf_helper+0x314/0x340 [ 20.201477] mempool_page_alloc_uaf+0xc0/0x118 [ 20.201523] kunit_try_run_case+0x170/0x3f0 [ 20.201572] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.201729] kthread+0x328/0x630 [ 20.201817] ret_from_fork+0x10/0x20 [ 20.201908] [ 20.201933] The buggy address belongs to the physical page: [ 20.201972] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107964 [ 20.202026] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.202088] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 20.202138] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 20.202178] page dumped because: kasan: bad access detected [ 20.202210] [ 20.202227] Memory state around the buggy address: [ 20.202259] fff00000c7963f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.202302] fff00000c7963f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.202345] >fff00000c7964000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.202383] ^ [ 20.202409] fff00000c7964080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.202449] fff00000c7964100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.202485] ================================================================== [ 20.133931] ================================================================== [ 20.133996] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 20.134051] Read of size 1 at addr fff00000c7918000 by task kunit_try_catch/229 [ 20.135813] [ 20.135992] CPU: 1 UID: 0 PID: 229 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 20.136856] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.137160] Hardware name: linux,dummy-virt (DT) [ 20.137905] Call trace: [ 20.137930] show_stack+0x20/0x38 (C) [ 20.138544] dump_stack_lvl+0x8c/0xd0 [ 20.138650] print_report+0x118/0x608 [ 20.139161] kasan_report+0xdc/0x128 [ 20.139380] __asan_report_load1_noabort+0x20/0x30 [ 20.140082] mempool_uaf_helper+0x314/0x340 [ 20.140235] mempool_kmalloc_large_uaf+0xc4/0x120 [ 20.140285] kunit_try_run_case+0x170/0x3f0 [ 20.140710] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.141168] kthread+0x328/0x630 [ 20.141831] ret_from_fork+0x10/0x20 [ 20.142694] [ 20.142887] The buggy address belongs to the physical page: [ 20.142924] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107918 [ 20.143273] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 20.143844] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 20.144371] page_type: f8(unknown) [ 20.144778] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 20.144951] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 20.145760] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 20.146220] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 20.146581] head: 0bfffe0000000002 ffffc1ffc31e4601 00000000ffffffff 00000000ffffffff [ 20.146928] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 20.146970] page dumped because: kasan: bad access detected [ 20.147003] [ 20.148014] Memory state around the buggy address: [ 20.148151] fff00000c7917f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.148381] fff00000c7917f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.149560] >fff00000c7918000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.149670] ^ [ 20.149829] fff00000c7918080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.149894] fff00000c7918100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.149933] ==================================================================
[ 13.136378] ================================================================== [ 13.136921] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 13.137211] Read of size 1 at addr ffff88810395c000 by task kunit_try_catch/247 [ 13.137665] [ 13.137774] CPU: 1 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 13.137819] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.137832] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.137854] Call Trace: [ 13.137866] <TASK> [ 13.137883] dump_stack_lvl+0x73/0xb0 [ 13.137912] print_report+0xd1/0x650 [ 13.137934] ? __virt_addr_valid+0x1db/0x2d0 [ 13.137958] ? mempool_uaf_helper+0x392/0x400 [ 13.137980] ? kasan_addr_to_slab+0x11/0xa0 [ 13.138002] ? mempool_uaf_helper+0x392/0x400 [ 13.138025] kasan_report+0x141/0x180 [ 13.138048] ? mempool_uaf_helper+0x392/0x400 [ 13.138075] __asan_report_load1_noabort+0x18/0x20 [ 13.138099] mempool_uaf_helper+0x392/0x400 [ 13.138123] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 13.138144] ? update_load_avg+0x1be/0x21b0 [ 13.138167] ? update_load_avg+0x1be/0x21b0 [ 13.138187] ? update_curr+0x80/0x810 [ 13.138210] ? finish_task_switch.isra.0+0x153/0x700 [ 13.138235] mempool_kmalloc_large_uaf+0xef/0x140 [ 13.138327] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 13.138357] ? __pfx_mempool_kmalloc+0x10/0x10 [ 13.138382] ? __pfx_mempool_kfree+0x10/0x10 [ 13.138407] ? __pfx_read_tsc+0x10/0x10 [ 13.138428] ? ktime_get_ts64+0x86/0x230 [ 13.138463] kunit_try_run_case+0x1a5/0x480 [ 13.138488] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.138512] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.138535] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.138558] ? __kthread_parkme+0x82/0x180 [ 13.138579] ? preempt_count_sub+0x50/0x80 [ 13.138602] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.138625] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.138649] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.138672] kthread+0x337/0x6f0 [ 13.138691] ? trace_preempt_on+0x20/0xc0 [ 13.138713] ? __pfx_kthread+0x10/0x10 [ 13.138734] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.138755] ? calculate_sigpending+0x7b/0xa0 [ 13.138779] ? __pfx_kthread+0x10/0x10 [ 13.138801] ret_from_fork+0x116/0x1d0 [ 13.138819] ? __pfx_kthread+0x10/0x10 [ 13.138839] ret_from_fork_asm+0x1a/0x30 [ 13.138870] </TASK> [ 13.138882] [ 13.147602] The buggy address belongs to the physical page: [ 13.148542] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10395c [ 13.149174] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 13.149428] flags: 0x200000000000040(head|node=0|zone=2) [ 13.150157] page_type: f8(unknown) [ 13.150440] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 13.151211] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 13.151449] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 13.151713] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 13.152590] head: 0200000000000002 ffffea00040e5701 00000000ffffffff 00000000ffffffff [ 13.153485] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 13.154170] page dumped because: kasan: bad access detected [ 13.154785] [ 13.155059] Memory state around the buggy address: [ 13.155478] ffff88810395bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.155919] ffff88810395bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.156598] >ffff88810395c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.157246] ^ [ 13.157449] ffff88810395c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.158180] ffff88810395c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.158668] ================================================================== [ 13.204860] ================================================================== [ 13.205590] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 13.206189] Read of size 1 at addr ffff888103960000 by task kunit_try_catch/251 [ 13.206689] [ 13.206811] CPU: 1 UID: 0 PID: 251 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 13.206858] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.206871] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.206894] Call Trace: [ 13.206907] <TASK> [ 13.206923] dump_stack_lvl+0x73/0xb0 [ 13.206953] print_report+0xd1/0x650 [ 13.206975] ? __virt_addr_valid+0x1db/0x2d0 [ 13.206997] ? mempool_uaf_helper+0x392/0x400 [ 13.207019] ? kasan_addr_to_slab+0x11/0xa0 [ 13.207040] ? mempool_uaf_helper+0x392/0x400 [ 13.207062] kasan_report+0x141/0x180 [ 13.207084] ? mempool_uaf_helper+0x392/0x400 [ 13.207111] __asan_report_load1_noabort+0x18/0x20 [ 13.207135] mempool_uaf_helper+0x392/0x400 [ 13.207158] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 13.207181] ? __kasan_check_write+0x18/0x20 [ 13.207201] ? __pfx_sched_clock_cpu+0x10/0x10 [ 13.207222] ? finish_task_switch.isra.0+0x153/0x700 [ 13.207247] mempool_page_alloc_uaf+0xed/0x140 [ 13.207289] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 13.207316] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 13.207336] ? __pfx_mempool_free_pages+0x10/0x10 [ 13.207359] ? __pfx_read_tsc+0x10/0x10 [ 13.207380] ? ktime_get_ts64+0x86/0x230 [ 13.207403] kunit_try_run_case+0x1a5/0x480 [ 13.207428] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.207450] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.207485] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.207508] ? __kthread_parkme+0x82/0x180 [ 13.207528] ? preempt_count_sub+0x50/0x80 [ 13.207551] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.207575] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.207598] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.207621] kthread+0x337/0x6f0 [ 13.207640] ? trace_preempt_on+0x20/0xc0 [ 13.207663] ? __pfx_kthread+0x10/0x10 [ 13.207732] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.207754] ? calculate_sigpending+0x7b/0xa0 [ 13.207778] ? __pfx_kthread+0x10/0x10 [ 13.207801] ret_from_fork+0x116/0x1d0 [ 13.207818] ? __pfx_kthread+0x10/0x10 [ 13.207838] ret_from_fork_asm+0x1a/0x30 [ 13.207869] </TASK> [ 13.207881] [ 13.218086] The buggy address belongs to the physical page: [ 13.218440] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103960 [ 13.218800] flags: 0x200000000000000(node=0|zone=2) [ 13.218984] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 13.219378] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 13.219647] page dumped because: kasan: bad access detected [ 13.219818] [ 13.219913] Memory state around the buggy address: [ 13.220134] ffff88810395ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.220537] ffff88810395ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.220896] >ffff888103960000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.221188] ^ [ 13.221414] ffff888103960080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.221702] ffff888103960100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.222078] ==================================================================