Date
July 17, 2025, 10:12 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.722641] ================================================================== [ 31.722978] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 31.723179] Read of size 1 at addr fff00000c9bd4000 by task kunit_try_catch/264 [ 31.723324] [ 31.723408] CPU: 0 UID: 0 PID: 264 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT [ 31.723499] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.723783] Hardware name: linux,dummy-virt (DT) [ 31.723912] Call trace: [ 31.723942] show_stack+0x20/0x38 (C) [ 31.723999] dump_stack_lvl+0x8c/0xd0 [ 31.724192] print_report+0x118/0x5d0 [ 31.724254] kasan_report+0xdc/0x128 [ 31.724298] __asan_report_load1_noabort+0x20/0x30 [ 31.724534] mempool_uaf_helper+0x314/0x340 [ 31.724660] mempool_page_alloc_uaf+0xc0/0x118 [ 31.724813] kunit_try_run_case+0x170/0x3f0 [ 31.724929] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.724985] kthread+0x328/0x630 [ 31.725362] ret_from_fork+0x10/0x20 [ 31.725638] [ 31.725696] The buggy address belongs to the physical page: [ 31.725830] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109bd4 [ 31.725916] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.726040] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 31.726435] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 31.726555] page dumped because: kasan: bad access detected [ 31.726658] [ 31.726694] Memory state around the buggy address: [ 31.726741] fff00000c9bd3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 31.726817] fff00000c9bd3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 31.726860] >fff00000c9bd4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 31.726897] ^ [ 31.726925] fff00000c9bd4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 31.726976] fff00000c9bd4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 31.727014] ================================================================== [ 31.662738] ================================================================== [ 31.662804] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 31.662857] Read of size 1 at addr fff00000c9bd0000 by task kunit_try_catch/260 [ 31.662905] [ 31.662934] CPU: 0 UID: 0 PID: 260 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT [ 31.663020] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.663048] Hardware name: linux,dummy-virt (DT) [ 31.663096] Call trace: [ 31.663117] show_stack+0x20/0x38 (C) [ 31.663167] dump_stack_lvl+0x8c/0xd0 [ 31.663217] print_report+0x118/0x5d0 [ 31.663261] kasan_report+0xdc/0x128 [ 31.663304] __asan_report_load1_noabort+0x20/0x30 [ 31.663351] mempool_uaf_helper+0x314/0x340 [ 31.663398] mempool_kmalloc_large_uaf+0xc4/0x120 [ 31.663465] kunit_try_run_case+0x170/0x3f0 [ 31.663527] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.663579] kthread+0x328/0x630 [ 31.663620] ret_from_fork+0x10/0x20 [ 31.663665] [ 31.663702] The buggy address belongs to the physical page: [ 31.663739] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109bd0 [ 31.663791] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 31.663845] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 31.663898] page_type: f8(unknown) [ 31.663950] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 31.663999] raw: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 31.664050] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 31.664869] head: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 31.664950] head: 0bfffe0000000002 ffffc1ffc326f401 00000000ffffffff 00000000ffffffff [ 31.665033] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 31.665085] page dumped because: kasan: bad access detected [ 31.665117] [ 31.665136] Memory state around the buggy address: [ 31.665464] fff00000c9bcff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.665725] fff00000c9bcff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.665884] >fff00000c9bd0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 31.666334] ^ [ 31.666403] fff00000c9bd0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 31.666869] fff00000c9bd0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 31.667226] ==================================================================
[ 27.188525] ================================================================== [ 27.190286] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 27.191610] Read of size 1 at addr ffff8881060ac000 by task kunit_try_catch/278 [ 27.191997] [ 27.192100] CPU: 1 UID: 0 PID: 278 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) [ 27.192150] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.192163] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.192183] Call Trace: [ 27.192196] <TASK> [ 27.192210] dump_stack_lvl+0x73/0xb0 [ 27.192240] print_report+0xd1/0x610 [ 27.192261] ? __virt_addr_valid+0x1db/0x2d0 [ 27.192285] ? mempool_uaf_helper+0x392/0x400 [ 27.192306] ? kasan_addr_to_slab+0x11/0xa0 [ 27.192325] ? mempool_uaf_helper+0x392/0x400 [ 27.192706] kasan_report+0x141/0x180 [ 27.192730] ? mempool_uaf_helper+0x392/0x400 [ 27.192758] __asan_report_load1_noabort+0x18/0x20 [ 27.192781] mempool_uaf_helper+0x392/0x400 [ 27.192803] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 27.192826] ? update_load_avg+0x1be/0x21b0 [ 27.192847] ? update_curr+0x7d/0x7f0 [ 27.192869] ? finish_task_switch.isra.0+0x153/0x700 [ 27.192895] mempool_kmalloc_large_uaf+0xef/0x140 [ 27.192919] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 27.192945] ? __pfx_mempool_kmalloc+0x10/0x10 [ 27.192967] ? __pfx_mempool_kfree+0x10/0x10 [ 27.192992] ? __pfx_read_tsc+0x10/0x10 [ 27.193012] ? ktime_get_ts64+0x86/0x230 [ 27.193038] kunit_try_run_case+0x1a5/0x480 [ 27.193061] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.193094] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.193117] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.193140] ? __kthread_parkme+0x82/0x180 [ 27.193164] ? preempt_count_sub+0x50/0x80 [ 27.193186] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.193209] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.193231] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.193308] kthread+0x337/0x6f0 [ 27.193327] ? trace_preempt_on+0x20/0xc0 [ 27.193350] ? __pfx_kthread+0x10/0x10 [ 27.193370] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.193392] ? calculate_sigpending+0x7b/0xa0 [ 27.193415] ? __pfx_kthread+0x10/0x10 [ 27.193435] ret_from_fork+0x116/0x1d0 [ 27.193453] ? __pfx_kthread+0x10/0x10 [ 27.193473] ret_from_fork_asm+0x1a/0x30 [ 27.193504] </TASK> [ 27.193514] [ 27.204531] The buggy address belongs to the physical page: [ 27.204770] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1060ac [ 27.205121] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 27.205757] flags: 0x200000000000040(head|node=0|zone=2) [ 27.205981] page_type: f8(unknown) [ 27.206172] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 27.207002] raw: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 27.207458] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 27.207761] head: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 27.208435] head: 0200000000000002 ffffea0004182b01 00000000ffffffff 00000000ffffffff [ 27.209190] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 27.209910] page dumped because: kasan: bad access detected [ 27.210401] [ 27.210475] Memory state around the buggy address: [ 27.210630] ffff8881060abf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.210843] ffff8881060abf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.211052] >ffff8881060ac000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.211286] ^ [ 27.211397] ffff8881060ac080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.212195] ffff8881060ac100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.212671] ================================================================== [ 27.258184] ================================================================== [ 27.259184] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 27.259782] Read of size 1 at addr ffff8881060ac000 by task kunit_try_catch/282 [ 27.260122] [ 27.260204] CPU: 1 UID: 0 PID: 282 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) [ 27.260255] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.260267] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.260288] Call Trace: [ 27.260301] <TASK> [ 27.260318] dump_stack_lvl+0x73/0xb0 [ 27.260348] print_report+0xd1/0x610 [ 27.260370] ? __virt_addr_valid+0x1db/0x2d0 [ 27.260394] ? mempool_uaf_helper+0x392/0x400 [ 27.260415] ? kasan_addr_to_slab+0x11/0xa0 [ 27.260435] ? mempool_uaf_helper+0x392/0x400 [ 27.260456] kasan_report+0x141/0x180 [ 27.260478] ? mempool_uaf_helper+0x392/0x400 [ 27.260504] __asan_report_load1_noabort+0x18/0x20 [ 27.260527] mempool_uaf_helper+0x392/0x400 [ 27.260550] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 27.260575] ? dequeue_entities+0x23f/0x1630 [ 27.260598] ? __kasan_check_write+0x18/0x20 [ 27.260621] ? __pfx_sched_clock_cpu+0x10/0x10 [ 27.260641] ? finish_task_switch.isra.0+0x153/0x700 [ 27.260666] mempool_page_alloc_uaf+0xed/0x140 [ 27.260689] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 27.260715] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 27.260737] ? __pfx_mempool_free_pages+0x10/0x10 [ 27.260812] ? __pfx_read_tsc+0x10/0x10 [ 27.260834] ? ktime_get_ts64+0x86/0x230 [ 27.260883] kunit_try_run_case+0x1a5/0x480 [ 27.260908] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.260930] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.260953] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.260975] ? __kthread_parkme+0x82/0x180 [ 27.260999] ? preempt_count_sub+0x50/0x80 [ 27.261021] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.261044] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.261067] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.261099] kthread+0x337/0x6f0 [ 27.261118] ? trace_preempt_on+0x20/0xc0 [ 27.261140] ? __pfx_kthread+0x10/0x10 [ 27.261160] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.261181] ? calculate_sigpending+0x7b/0xa0 [ 27.261204] ? __pfx_kthread+0x10/0x10 [ 27.261225] ret_from_fork+0x116/0x1d0 [ 27.261244] ? __pfx_kthread+0x10/0x10 [ 27.261263] ret_from_fork_asm+0x1a/0x30 [ 27.261295] </TASK> [ 27.261306] [ 27.277972] The buggy address belongs to the physical page: [ 27.278162] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1060ac [ 27.278818] flags: 0x200000000000000(node=0|zone=2) [ 27.279350] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 27.280149] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 27.280828] page dumped because: kasan: bad access detected [ 27.281335] [ 27.281519] Memory state around the buggy address: [ 27.281794] ffff8881060abf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.282012] ffff8881060abf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.282236] >ffff8881060ac000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.282728] ^ [ 27.282902] ffff8881060ac080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.283324] ffff8881060ac100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 27.283566] ==================================================================