Date
July 22, 2025, 2:40 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.220306] ================================================================== [ 19.220454] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 19.220518] Read of size 1 at addr fff00000c78dc000 by task kunit_try_catch/231 [ 19.220597] [ 19.220668] CPU: 1 UID: 0 PID: 231 Comm: kunit_try_catch Tainted: G B N 6.15.8-rc1 #1 PREEMPT [ 19.220751] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.220777] Hardware name: linux,dummy-virt (DT) [ 19.220969] Call trace: [ 19.220995] show_stack+0x20/0x38 (C) [ 19.221058] dump_stack_lvl+0x8c/0xd0 [ 19.221111] print_report+0x118/0x5d0 [ 19.221154] kasan_report+0xdc/0x128 [ 19.221339] __asan_report_load1_noabort+0x20/0x30 [ 19.221521] mempool_uaf_helper+0x314/0x340 [ 19.221599] mempool_kmalloc_large_uaf+0xc4/0x120 [ 19.221674] kunit_try_run_case+0x170/0x3f0 [ 19.221850] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.221929] kthread+0x328/0x630 [ 19.221978] ret_from_fork+0x10/0x20 [ 19.222045] [ 19.222178] The buggy address belongs to the physical page: [ 19.222224] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078dc [ 19.222336] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 19.222386] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 19.222450] page_type: f8(unknown) [ 19.222489] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 19.222538] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 19.222585] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 19.222633] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 19.222681] head: 0bfffe0000000002 ffffc1ffc31e3701 00000000ffffffff 00000000ffffffff [ 19.222868] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 19.222913] page dumped because: kasan: bad access detected [ 19.222947] [ 19.222965] Memory state around the buggy address: [ 19.223043] fff00000c78dbf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.223118] fff00000c78dbf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.223161] >fff00000c78dc000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.223200] ^ [ 19.223228] fff00000c78dc080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.223271] fff00000c78dc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.223332] ================================================================== [ 19.258874] ================================================================== [ 19.258936] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 19.259156] Read of size 1 at addr fff00000c78e4000 by task kunit_try_catch/235 [ 19.259334] [ 19.259423] CPU: 1 UID: 0 PID: 235 Comm: kunit_try_catch Tainted: G B N 6.15.8-rc1 #1 PREEMPT [ 19.259582] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.259644] Hardware name: linux,dummy-virt (DT) [ 19.259738] Call trace: [ 19.259779] show_stack+0x20/0x38 (C) [ 19.259852] dump_stack_lvl+0x8c/0xd0 [ 19.259946] print_report+0x118/0x5d0 [ 19.260003] kasan_report+0xdc/0x128 [ 19.260047] __asan_report_load1_noabort+0x20/0x30 [ 19.260264] mempool_uaf_helper+0x314/0x340 [ 19.260333] mempool_page_alloc_uaf+0xc0/0x118 [ 19.260388] kunit_try_run_case+0x170/0x3f0 [ 19.260502] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.260604] kthread+0x328/0x630 [ 19.260800] ret_from_fork+0x10/0x20 [ 19.261596] [ 19.261624] The buggy address belongs to the physical page: [ 19.261659] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078e4 [ 19.261904] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.261974] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 19.262104] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 19.262175] page dumped because: kasan: bad access detected [ 19.262231] [ 19.262250] Memory state around the buggy address: [ 19.262415] fff00000c78e3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.262468] fff00000c78e3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.262512] >fff00000c78e4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.262550] ^ [ 19.262585] fff00000c78e4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.262642] fff00000c78e4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.262690] ==================================================================
[ 12.684682] ================================================================== [ 12.685874] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 12.686489] Read of size 1 at addr ffff888103c9c000 by task kunit_try_catch/249 [ 12.686718] [ 12.686812] CPU: 1 UID: 0 PID: 249 Comm: kunit_try_catch Tainted: G B N 6.15.8-rc1 #1 PREEMPT(voluntary) [ 12.686859] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.686871] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.686894] Call Trace: [ 12.686908] <TASK> [ 12.686928] dump_stack_lvl+0x73/0xb0 [ 12.686957] print_report+0xd1/0x610 [ 12.686980] ? __virt_addr_valid+0x1db/0x2d0 [ 12.687003] ? mempool_uaf_helper+0x392/0x400 [ 12.687025] ? kasan_addr_to_slab+0x11/0xa0 [ 12.687046] ? mempool_uaf_helper+0x392/0x400 [ 12.687068] kasan_report+0x141/0x180 [ 12.687090] ? mempool_uaf_helper+0x392/0x400 [ 12.687117] __asan_report_load1_noabort+0x18/0x20 [ 12.687137] mempool_uaf_helper+0x392/0x400 [ 12.687160] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 12.687182] ? dequeue_entities+0x852/0x1740 [ 12.687208] ? finish_task_switch.isra.0+0x153/0x700 [ 12.687248] mempool_kmalloc_large_uaf+0xef/0x140 [ 12.687271] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 12.687294] ? dequeue_task_fair+0x166/0x4e0 [ 12.687316] ? __pfx_mempool_kmalloc+0x10/0x10 [ 12.687337] ? __pfx_mempool_kfree+0x10/0x10 [ 12.687359] ? __pfx_read_tsc+0x10/0x10 [ 12.687379] ? ktime_get_ts64+0x86/0x230 [ 12.687405] kunit_try_run_case+0x1a5/0x480 [ 12.687441] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.687459] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.687480] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.687505] ? __kthread_parkme+0x82/0x180 [ 12.687527] ? preempt_count_sub+0x50/0x80 [ 12.687551] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.687571] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.687594] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.687616] kthread+0x337/0x6f0 [ 12.687633] ? trace_preempt_on+0x20/0xc0 [ 12.687657] ? __pfx_kthread+0x10/0x10 [ 12.687676] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.687699] ? calculate_sigpending+0x7b/0xa0 [ 12.687722] ? __pfx_kthread+0x10/0x10 [ 12.687740] ret_from_fork+0x41/0x80 [ 12.687760] ? __pfx_kthread+0x10/0x10 [ 12.687777] ret_from_fork_asm+0x1a/0x30 [ 12.687807] </TASK> [ 12.687818] [ 12.701570] The buggy address belongs to the physical page: [ 12.701876] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103c9c [ 12.702875] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.703606] flags: 0x200000000000040(head|node=0|zone=2) [ 12.704090] page_type: f8(unknown) [ 12.704220] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 12.704590] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 12.705451] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 12.706389] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 12.706963] head: 0200000000000002 ffffea00040f2701 00000000ffffffff 00000000ffffffff [ 12.707195] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 12.707571] page dumped because: kasan: bad access detected [ 12.708291] [ 12.708503] Memory state around the buggy address: [ 12.709100] ffff888103c9bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.709762] ffff888103c9bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.710125] >ffff888103c9c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.710345] ^ [ 12.710458] ffff888103c9c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.710865] ffff888103c9c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.711480] ================================================================== [ 12.749597] ================================================================== [ 12.750129] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 12.750540] Read of size 1 at addr ffff888103c9c000 by task kunit_try_catch/253 [ 12.750834] [ 12.751192] CPU: 1 UID: 0 PID: 253 Comm: kunit_try_catch Tainted: G B N 6.15.8-rc1 #1 PREEMPT(voluntary) [ 12.751256] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.751268] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.751291] Call Trace: [ 12.751304] <TASK> [ 12.751320] dump_stack_lvl+0x73/0xb0 [ 12.751347] print_report+0xd1/0x610 [ 12.751370] ? __virt_addr_valid+0x1db/0x2d0 [ 12.751392] ? mempool_uaf_helper+0x392/0x400 [ 12.751415] ? kasan_addr_to_slab+0x11/0xa0 [ 12.751437] ? mempool_uaf_helper+0x392/0x400 [ 12.751459] kasan_report+0x141/0x180 [ 12.751482] ? mempool_uaf_helper+0x392/0x400 [ 12.751509] __asan_report_load1_noabort+0x18/0x20 [ 12.751530] mempool_uaf_helper+0x392/0x400 [ 12.751554] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 12.751576] ? dequeue_entities+0x852/0x1740 [ 12.751601] ? finish_task_switch.isra.0+0x153/0x700 [ 12.751628] mempool_page_alloc_uaf+0xed/0x140 [ 12.751648] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 12.751721] ? dequeue_task_fair+0x166/0x4e0 [ 12.751746] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 12.751769] ? __pfx_mempool_free_pages+0x10/0x10 [ 12.751792] ? __pfx_read_tsc+0x10/0x10 [ 12.751813] ? ktime_get_ts64+0x86/0x230 [ 12.751838] kunit_try_run_case+0x1a5/0x480 [ 12.751860] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.751878] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.751900] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.751924] ? __kthread_parkme+0x82/0x180 [ 12.751946] ? preempt_count_sub+0x50/0x80 [ 12.751971] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.751991] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.752014] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.752038] kthread+0x337/0x6f0 [ 12.752054] ? trace_preempt_on+0x20/0xc0 [ 12.752077] ? __pfx_kthread+0x10/0x10 [ 12.752095] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.752117] ? calculate_sigpending+0x7b/0xa0 [ 12.752139] ? __pfx_kthread+0x10/0x10 [ 12.752156] ret_from_fork+0x41/0x80 [ 12.752177] ? __pfx_kthread+0x10/0x10 [ 12.752194] ret_from_fork_asm+0x1a/0x30 [ 12.752238] </TASK> [ 12.752249] [ 12.760922] The buggy address belongs to the physical page: [ 12.761193] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103c9c [ 12.761678] flags: 0x200000000000000(node=0|zone=2) [ 12.762069] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 12.762911] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 12.763193] page dumped because: kasan: bad access detected [ 12.763879] [ 12.763976] Memory state around the buggy address: [ 12.764990] ffff888103c9bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.765430] ffff888103c9bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.765905] >ffff888103c9c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.766323] ^ [ 12.766613] ffff888103c9c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.767002] ffff888103c9c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.767385] ==================================================================