Date
July 15, 2025, 2:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.917614] ================================================================== [ 19.917678] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 19.917983] Read of size 1 at addr fff00000c7938000 by task kunit_try_catch/235 [ 19.918116] [ 19.918162] CPU: 0 UID: 0 PID: 235 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT [ 19.918391] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.918421] Hardware name: linux,dummy-virt (DT) [ 19.918622] Call trace: [ 19.918797] show_stack+0x20/0x38 (C) [ 19.918913] dump_stack_lvl+0x8c/0xd0 [ 19.919086] print_report+0x118/0x5d0 [ 19.919194] kasan_report+0xdc/0x128 [ 19.919255] __asan_report_load1_noabort+0x20/0x30 [ 19.919330] mempool_uaf_helper+0x314/0x340 [ 19.919751] mempool_page_alloc_uaf+0xc0/0x118 [ 19.919815] kunit_try_run_case+0x170/0x3f0 [ 19.920087] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.920289] kthread+0x328/0x630 [ 19.920393] ret_from_fork+0x10/0x20 [ 19.920471] [ 19.920663] The buggy address belongs to the physical page: [ 19.920705] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107938 [ 19.920762] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.920967] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 19.921043] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 19.921130] page dumped because: kasan: bad access detected [ 19.921164] [ 19.921183] Memory state around the buggy address: [ 19.921235] fff00000c7937f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.921290] fff00000c7937f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.921659] >fff00000c7938000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.921716] ^ [ 19.921745] fff00000c7938080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.921924] fff00000c7938100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.922181] ================================================================== [ 19.879020] ================================================================== [ 19.879358] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 19.879548] Read of size 1 at addr fff00000c7938000 by task kunit_try_catch/231 [ 19.879622] [ 19.879687] CPU: 0 UID: 0 PID: 231 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT [ 19.880083] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.880229] Hardware name: linux,dummy-virt (DT) [ 19.880294] Call trace: [ 19.880317] show_stack+0x20/0x38 (C) [ 19.880376] dump_stack_lvl+0x8c/0xd0 [ 19.880546] print_report+0x118/0x5d0 [ 19.880662] kasan_report+0xdc/0x128 [ 19.880800] __asan_report_load1_noabort+0x20/0x30 [ 19.880931] mempool_uaf_helper+0x314/0x340 [ 19.880983] mempool_kmalloc_large_uaf+0xc4/0x120 [ 19.881059] kunit_try_run_case+0x170/0x3f0 [ 19.881340] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.881545] kthread+0x328/0x630 [ 19.881687] ret_from_fork+0x10/0x20 [ 19.881843] [ 19.881950] The buggy address belongs to the physical page: [ 19.882004] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107938 [ 19.882261] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 19.882450] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 19.882549] page_type: f8(unknown) [ 19.882587] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 19.883017] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 19.883098] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 19.883259] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 19.883359] head: 0bfffe0000000002 ffffc1ffc31e4e01 00000000ffffffff 00000000ffffffff [ 19.883554] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 19.883663] page dumped because: kasan: bad access detected [ 19.883717] [ 19.883737] Memory state around the buggy address: [ 19.883770] fff00000c7937f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.883887] fff00000c7937f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.884068] >fff00000c7938000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.884157] ^ [ 19.884195] fff00000c7938080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.884317] fff00000c7938100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.884360] ==================================================================
[ 12.536928] ================================================================== [ 12.537407] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 12.537722] Read of size 1 at addr ffff888102ac8000 by task kunit_try_catch/248 [ 12.538302] [ 12.538415] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT(voluntary) [ 12.538515] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.538527] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.538547] Call Trace: [ 12.538560] <TASK> [ 12.538575] dump_stack_lvl+0x73/0xb0 [ 12.538599] print_report+0xd1/0x610 [ 12.538621] ? __virt_addr_valid+0x1db/0x2d0 [ 12.538642] ? mempool_uaf_helper+0x392/0x400 [ 12.538664] ? kasan_addr_to_slab+0x11/0xa0 [ 12.538684] ? mempool_uaf_helper+0x392/0x400 [ 12.538773] kasan_report+0x141/0x180 [ 12.538801] ? mempool_uaf_helper+0x392/0x400 [ 12.538866] __asan_report_load1_noabort+0x18/0x20 [ 12.538897] mempool_uaf_helper+0x392/0x400 [ 12.538920] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 12.538947] ? finish_task_switch.isra.0+0x153/0x700 [ 12.538973] mempool_kmalloc_large_uaf+0xef/0x140 [ 12.538996] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 12.539020] ? __kasan_check_write+0x18/0x20 [ 12.539040] ? __pfx_mempool_kmalloc+0x10/0x10 [ 12.539061] ? __pfx_mempool_kfree+0x10/0x10 [ 12.539081] ? __pfx_read_tsc+0x10/0x10 [ 12.539101] ? ktime_get_ts64+0x86/0x230 [ 12.539121] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 12.539145] kunit_try_run_case+0x1a5/0x480 [ 12.539166] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.539186] ? queued_spin_lock_slowpath+0x116/0xb40 [ 12.539210] ? __kthread_parkme+0x82/0x180 [ 12.539231] ? preempt_count_sub+0x50/0x80 [ 12.539255] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.539275] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.539298] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.539321] kthread+0x337/0x6f0 [ 12.539337] ? trace_preempt_on+0x20/0xc0 [ 12.539359] ? __pfx_kthread+0x10/0x10 [ 12.539376] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.539397] ? calculate_sigpending+0x7b/0xa0 [ 12.539418] ? __pfx_kthread+0x10/0x10 [ 12.539436] ret_from_fork+0x41/0x80 [ 12.539455] ? __pfx_kthread+0x10/0x10 [ 12.539472] ret_from_fork_asm+0x1a/0x30 [ 12.539503] </TASK> [ 12.539513] [ 12.548580] The buggy address belongs to the physical page: [ 12.549137] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102ac8 [ 12.549509] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.549941] flags: 0x200000000000040(head|node=0|zone=2) [ 12.550322] page_type: f8(unknown) [ 12.550502] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 12.550971] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 12.551415] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 12.551901] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 12.552372] head: 0200000000000002 ffffea00040ab201 00000000ffffffff 00000000ffffffff [ 12.552793] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 12.553155] page dumped because: kasan: bad access detected [ 12.553404] [ 12.553527] Memory state around the buggy address: [ 12.553808] ffff888102ac7f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.554151] ffff888102ac7f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.554435] >ffff888102ac8000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.554934] ^ [ 12.555182] ffff888102ac8080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.555490] ffff888102ac8100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.555987] ================================================================== [ 12.599969] ================================================================== [ 12.600457] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 12.600918] Read of size 1 at addr ffff888103968000 by task kunit_try_catch/252 [ 12.601240] [ 12.601352] CPU: 1 UID: 0 PID: 252 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT(voluntary) [ 12.601430] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.601442] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.601488] Call Trace: [ 12.601523] <TASK> [ 12.601561] dump_stack_lvl+0x73/0xb0 [ 12.601587] print_report+0xd1/0x610 [ 12.601610] ? __virt_addr_valid+0x1db/0x2d0 [ 12.601631] ? mempool_uaf_helper+0x392/0x400 [ 12.601653] ? kasan_addr_to_slab+0x11/0xa0 [ 12.601735] ? mempool_uaf_helper+0x392/0x400 [ 12.601762] kasan_report+0x141/0x180 [ 12.601784] ? mempool_uaf_helper+0x392/0x400 [ 12.601830] __asan_report_load1_noabort+0x18/0x20 [ 12.601851] mempool_uaf_helper+0x392/0x400 [ 12.601875] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 12.601908] ? dequeue_entities+0x852/0x1740 [ 12.601932] ? finish_task_switch.isra.0+0x153/0x700 [ 12.601958] mempool_page_alloc_uaf+0xed/0x140 [ 12.601979] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 12.601998] ? dequeue_task_fair+0x166/0x4e0 [ 12.602019] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 12.602039] ? __pfx_mempool_free_pages+0x10/0x10 [ 12.602061] ? __pfx_read_tsc+0x10/0x10 [ 12.602080] ? ktime_get_ts64+0x86/0x230 [ 12.602106] kunit_try_run_case+0x1a5/0x480 [ 12.602127] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.602145] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.602170] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.602193] ? __kthread_parkme+0x82/0x180 [ 12.602214] ? preempt_count_sub+0x50/0x80 [ 12.602237] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.602257] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.602280] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.602303] kthread+0x337/0x6f0 [ 12.602319] ? trace_preempt_on+0x20/0xc0 [ 12.602343] ? __pfx_kthread+0x10/0x10 [ 12.602360] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.602381] ? calculate_sigpending+0x7b/0xa0 [ 12.602402] ? __pfx_kthread+0x10/0x10 [ 12.602420] ret_from_fork+0x41/0x80 [ 12.602441] ? __pfx_kthread+0x10/0x10 [ 12.602458] ret_from_fork_asm+0x1a/0x30 [ 12.602488] </TASK> [ 12.602500] [ 12.611648] The buggy address belongs to the physical page: [ 12.611898] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103968 [ 12.612152] flags: 0x200000000000000(node=0|zone=2) [ 12.612397] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 12.612751] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 12.613107] page dumped because: kasan: bad access detected [ 12.613361] [ 12.613444] Memory state around the buggy address: [ 12.613635] ffff888103967f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.614024] ffff888103967f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.614322] >ffff888103968000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.614532] ^ [ 12.614645] ffff888103968080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.614994] ffff888103968100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.615354] ==================================================================