Date
July 3, 2025, 3:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.647701] ================================================================== [ 17.647765] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.647829] Read of size 1 at addr fff00000c7920000 by task kunit_try_catch/236 [ 17.647877] [ 17.647914] CPU: 0 UID: 0 PID: 236 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT [ 17.648015] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.648040] Hardware name: linux,dummy-virt (DT) [ 17.648072] Call trace: [ 17.648095] show_stack+0x20/0x38 (C) [ 17.648144] dump_stack_lvl+0x8c/0xd0 [ 17.648193] print_report+0x118/0x608 [ 17.648236] kasan_report+0xdc/0x128 [ 17.648319] __asan_report_load1_noabort+0x20/0x30 [ 17.648368] mempool_uaf_helper+0x314/0x340 [ 17.648416] mempool_page_alloc_uaf+0xc0/0x118 [ 17.648461] kunit_try_run_case+0x170/0x3f0 [ 17.648509] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.648561] kthread+0x328/0x630 [ 17.648605] ret_from_fork+0x10/0x20 [ 17.648652] [ 17.648693] The buggy address belongs to the physical page: [ 17.648752] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107920 [ 17.648807] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.648873] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 17.648921] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 17.648972] page dumped because: kasan: bad access detected [ 17.649004] [ 17.649021] Memory state around the buggy address: [ 17.649054] fff00000c791ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.649095] fff00000c791ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.649137] >fff00000c7920000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.649174] ^ [ 17.649201] fff00000c7920080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.649240] fff00000c7920100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.649276] ================================================================== [ 17.584351] ================================================================== [ 17.584439] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.584891] Read of size 1 at addr fff00000c791c000 by task kunit_try_catch/232 [ 17.585307] [ 17.585429] CPU: 0 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT [ 17.585516] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.585543] Hardware name: linux,dummy-virt (DT) [ 17.586004] Call trace: [ 17.586032] show_stack+0x20/0x38 (C) [ 17.586086] dump_stack_lvl+0x8c/0xd0 [ 17.586597] print_report+0x118/0x608 [ 17.586665] kasan_report+0xdc/0x128 [ 17.586709] __asan_report_load1_noabort+0x20/0x30 [ 17.586883] mempool_uaf_helper+0x314/0x340 [ 17.586938] mempool_kmalloc_large_uaf+0xc4/0x120 [ 17.586998] kunit_try_run_case+0x170/0x3f0 [ 17.587254] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.587353] kthread+0x328/0x630 [ 17.587414] ret_from_fork+0x10/0x20 [ 17.587472] [ 17.587608] The buggy address belongs to the physical page: [ 17.587672] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10791c [ 17.587764] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 17.587833] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 17.588321] page_type: f8(unknown) [ 17.588683] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 17.589496] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 17.589651] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 17.589701] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 17.589749] head: 0bfffe0000000002 ffffc1ffc31e4701 00000000ffffffff 00000000ffffffff [ 17.589796] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 17.590356] page dumped because: kasan: bad access detected [ 17.590403] [ 17.590432] Memory state around the buggy address: [ 17.590542] fff00000c791bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.590935] fff00000c791bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.591118] >fff00000c791c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.591222] ^ [ 17.591254] fff00000c791c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.591318] fff00000c791c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.591357] ==================================================================
[ 12.705768] ================================================================== [ 12.706198] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 12.706680] Read of size 1 at addr ffff888103928000 by task kunit_try_catch/248 [ 12.707214] [ 12.707718] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT(voluntary) [ 12.707773] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.707786] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.707813] Call Trace: [ 12.707827] <TASK> [ 12.707847] dump_stack_lvl+0x73/0xb0 [ 12.707878] print_report+0xd1/0x650 [ 12.707902] ? __virt_addr_valid+0x1db/0x2d0 [ 12.707926] ? mempool_uaf_helper+0x392/0x400 [ 12.707949] ? kasan_addr_to_slab+0x11/0xa0 [ 12.707971] ? mempool_uaf_helper+0x392/0x400 [ 12.707994] kasan_report+0x141/0x180 [ 12.708017] ? mempool_uaf_helper+0x392/0x400 [ 12.708044] __asan_report_load1_noabort+0x18/0x20 [ 12.708066] mempool_uaf_helper+0x392/0x400 [ 12.708089] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 12.708112] ? update_load_avg+0x1be/0x21b0 [ 12.708134] ? dequeue_entities+0x27e/0x1740 [ 12.708157] ? finish_task_switch.isra.0+0x153/0x700 [ 12.708185] mempool_kmalloc_large_uaf+0xef/0x140 [ 12.708210] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 12.708248] ? dequeue_task_fair+0x166/0x4e0 [ 12.708271] ? __pfx_mempool_kmalloc+0x10/0x10 [ 12.708293] ? __pfx_mempool_kfree+0x10/0x10 [ 12.708315] ? __pfx_read_tsc+0x10/0x10 [ 12.708335] ? ktime_get_ts64+0x86/0x230 [ 12.708361] kunit_try_run_case+0x1a5/0x480 [ 12.708387] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.708409] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.708434] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.708458] ? __kthread_parkme+0x82/0x180 [ 12.708481] ? preempt_count_sub+0x50/0x80 [ 12.708506] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.708530] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.708553] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.708576] kthread+0x337/0x6f0 [ 12.708593] ? trace_preempt_on+0x20/0xc0 [ 12.708617] ? __pfx_kthread+0x10/0x10 [ 12.708635] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.708658] ? calculate_sigpending+0x7b/0xa0 [ 12.708680] ? __pfx_kthread+0x10/0x10 [ 12.708699] ret_from_fork+0x41/0x80 [ 12.708719] ? __pfx_kthread+0x10/0x10 [ 12.708737] ret_from_fork_asm+0x1a/0x30 [ 12.708769] </TASK> [ 12.708781] [ 12.724819] The buggy address belongs to the physical page: [ 12.725037] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103928 [ 12.725381] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.726071] flags: 0x200000000000040(head|node=0|zone=2) [ 12.726613] page_type: f8(unknown) [ 12.726993] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 12.727799] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 12.728522] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 12.728995] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 12.729856] head: 0200000000000002 ffffea00040e4a01 00000000ffffffff 00000000ffffffff [ 12.730097] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 12.730515] page dumped because: kasan: bad access detected [ 12.731049] [ 12.731207] Memory state around the buggy address: [ 12.731704] ffff888103927f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.732431] ffff888103927f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.733101] >ffff888103928000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.733409] ^ [ 12.733750] ffff888103928080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.734387] ffff888103928100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.734669] ================================================================== [ 12.787386] ================================================================== [ 12.787857] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 12.788583] Read of size 1 at addr ffff888102a38000 by task kunit_try_catch/252 [ 12.789134] [ 12.789270] CPU: 1 UID: 0 PID: 252 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT(voluntary) [ 12.789565] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.789592] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.789616] Call Trace: [ 12.789629] <TASK> [ 12.789649] dump_stack_lvl+0x73/0xb0 [ 12.789679] print_report+0xd1/0x650 [ 12.789703] ? __virt_addr_valid+0x1db/0x2d0 [ 12.789727] ? mempool_uaf_helper+0x392/0x400 [ 12.789750] ? kasan_addr_to_slab+0x11/0xa0 [ 12.789772] ? mempool_uaf_helper+0x392/0x400 [ 12.789796] kasan_report+0x141/0x180 [ 12.789819] ? mempool_uaf_helper+0x392/0x400 [ 12.789847] __asan_report_load1_noabort+0x18/0x20 [ 12.789868] mempool_uaf_helper+0x392/0x400 [ 12.789892] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 12.789915] ? dequeue_entities+0x852/0x1740 [ 12.789941] ? finish_task_switch.isra.0+0x153/0x700 [ 12.789970] mempool_page_alloc_uaf+0xed/0x140 [ 12.789990] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 12.790011] ? dequeue_task_fair+0x166/0x4e0 [ 12.790033] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 12.790055] ? __pfx_mempool_free_pages+0x10/0x10 [ 12.790079] ? __pfx_read_tsc+0x10/0x10 [ 12.790098] ? ktime_get_ts64+0x86/0x230 [ 12.790124] kunit_try_run_case+0x1a5/0x480 [ 12.790152] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.790176] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.790201] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.790225] ? __kthread_parkme+0x82/0x180 [ 12.790258] ? preempt_count_sub+0x50/0x80 [ 12.790295] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.790320] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.790342] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.790366] kthread+0x337/0x6f0 [ 12.790384] ? trace_preempt_on+0x20/0xc0 [ 12.790409] ? __pfx_kthread+0x10/0x10 [ 12.790427] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.790449] ? calculate_sigpending+0x7b/0xa0 [ 12.790471] ? __pfx_kthread+0x10/0x10 [ 12.790490] ret_from_fork+0x41/0x80 [ 12.790511] ? __pfx_kthread+0x10/0x10 [ 12.790529] ret_from_fork_asm+0x1a/0x30 [ 12.790560] </TASK> [ 12.790572] [ 12.802865] The buggy address belongs to the physical page: [ 12.803208] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a38 [ 12.803743] flags: 0x200000000000000(node=0|zone=2) [ 12.804023] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 12.804468] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 12.804779] page dumped because: kasan: bad access detected [ 12.805112] [ 12.805268] Memory state around the buggy address: [ 12.805655] ffff888102a37f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.806111] ffff888102a37f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.806576] >ffff888102a38000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.806914] ^ [ 12.807035] ffff888102a38080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.807389] ffff888102a38100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.807839] ==================================================================