Date
May 26, 2025, 9:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.881307] ================================================================== [ 19.881645] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 19.881778] Read of size 1 at addr fff00000c797c000 by task kunit_try_catch/229 [ 19.881885] [ 19.881964] CPU: 0 UID: 0 PID: 229 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7-next-20250526 #1 PREEMPT [ 19.882226] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.882288] Hardware name: linux,dummy-virt (DT) [ 19.882374] Call trace: [ 19.882430] show_stack+0x20/0x38 (C) [ 19.882551] dump_stack_lvl+0x8c/0xd0 [ 19.882680] print_report+0x118/0x608 [ 19.882820] kasan_report+0xdc/0x128 [ 19.882970] __asan_report_load1_noabort+0x20/0x30 [ 19.883123] mempool_uaf_helper+0x314/0x340 [ 19.883238] mempool_kmalloc_large_uaf+0xc4/0x120 [ 19.883332] kunit_try_run_case+0x170/0x3f0 [ 19.883420] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.883525] kthread+0x328/0x630 [ 19.883632] ret_from_fork+0x10/0x20 [ 19.883732] [ 19.883777] The buggy address belongs to the physical page: [ 19.883946] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10797c [ 19.884219] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 19.884393] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 19.884546] page_type: f8(unknown) [ 19.884641] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 19.884740] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 19.884848] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 19.885170] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 19.885387] head: 0bfffe0000000002 ffffc1ffc31e5f01 00000000ffffffff 00000000ffffffff [ 19.885571] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 19.885675] page dumped because: kasan: bad access detected [ 19.885749] [ 19.885787] Memory state around the buggy address: [ 19.886371] fff00000c797bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.886813] fff00000c797bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.886916] >fff00000c797c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.887126] ^ [ 19.887197] fff00000c797c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.887420] fff00000c797c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.887523] ================================================================== [ 19.960628] ================================================================== [ 19.960819] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 19.960969] Read of size 1 at addr fff00000c797c000 by task kunit_try_catch/233 [ 19.961086] [ 19.961195] CPU: 0 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7-next-20250526 #1 PREEMPT [ 19.961476] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.961577] Hardware name: linux,dummy-virt (DT) [ 19.961682] Call trace: [ 19.961769] show_stack+0x20/0x38 (C) [ 19.961887] dump_stack_lvl+0x8c/0xd0 [ 19.962050] print_report+0x118/0x608 [ 19.962188] kasan_report+0xdc/0x128 [ 19.962309] __asan_report_load1_noabort+0x20/0x30 [ 19.962422] mempool_uaf_helper+0x314/0x340 [ 19.962520] mempool_page_alloc_uaf+0xc0/0x118 [ 19.962632] kunit_try_run_case+0x170/0x3f0 [ 19.962808] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.962934] kthread+0x328/0x630 [ 19.963047] ret_from_fork+0x10/0x20 [ 19.963162] [ 19.963214] The buggy address belongs to the physical page: [ 19.963286] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10797c [ 19.963439] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.963638] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 19.963793] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 19.963906] page dumped because: kasan: bad access detected [ 19.964028] [ 19.964072] Memory state around the buggy address: [ 19.964361] fff00000c797bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.964626] fff00000c797bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.964814] >fff00000c797c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.964896] ^ [ 19.964952] fff00000c797c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.965050] fff00000c797c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.965649] ==================================================================
[ 12.532517] ================================================================== [ 12.533560] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 12.534080] Read of size 1 at addr ffff8881039f4000 by task kunit_try_catch/247 [ 12.534918] [ 12.535125] CPU: 1 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7-next-20250526 #1 PREEMPT(voluntary) [ 12.535185] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.535198] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.535237] Call Trace: [ 12.535250] <TASK> [ 12.535294] dump_stack_lvl+0x73/0xb0 [ 12.535325] print_report+0xd1/0x650 [ 12.535348] ? __virt_addr_valid+0x1db/0x2d0 [ 12.535392] ? mempool_uaf_helper+0x392/0x400 [ 12.535415] ? kasan_addr_to_slab+0x11/0xa0 [ 12.535435] ? mempool_uaf_helper+0x392/0x400 [ 12.535459] kasan_report+0x141/0x180 [ 12.535481] ? mempool_uaf_helper+0x392/0x400 [ 12.535509] __asan_report_load1_noabort+0x18/0x20 [ 12.535529] mempool_uaf_helper+0x392/0x400 [ 12.535552] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 12.535579] ? finish_task_switch.isra.0+0x153/0x700 [ 12.535605] mempool_kmalloc_large_uaf+0xef/0x140 [ 12.535629] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 12.535656] ? __pfx_mempool_kmalloc+0x10/0x10 [ 12.535676] ? __pfx_mempool_kfree+0x10/0x10 [ 12.535715] ? __pfx_read_tsc+0x10/0x10 [ 12.535737] ? ktime_get_ts64+0x86/0x230 [ 12.535763] kunit_try_run_case+0x1a5/0x480 [ 12.535785] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.535805] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.535831] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.535857] ? __kthread_parkme+0x82/0x180 [ 12.535878] ? preempt_count_sub+0x50/0x80 [ 12.535900] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.535921] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.535945] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.535971] kthread+0x337/0x6f0 [ 12.536008] ? trace_preempt_on+0x20/0xc0 [ 12.536034] ? __pfx_kthread+0x10/0x10 [ 12.536055] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.536079] ? calculate_sigpending+0x7b/0xa0 [ 12.536105] ? __pfx_kthread+0x10/0x10 [ 12.536126] ret_from_fork+0x116/0x1d0 [ 12.536145] ? __pfx_kthread+0x10/0x10 [ 12.536166] ret_from_fork_asm+0x1a/0x30 [ 12.536197] </TASK> [ 12.536207] [ 12.544717] The buggy address belongs to the physical page: [ 12.544933] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039f4 [ 12.545232] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.545568] flags: 0x200000000000040(head|node=0|zone=2) [ 12.545926] page_type: f8(unknown) [ 12.546141] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 12.546565] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 12.547016] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 12.547408] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 12.547909] head: 0200000000000002 ffffea00040e7d01 00000000ffffffff 00000000ffffffff [ 12.548317] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 12.548558] page dumped because: kasan: bad access detected [ 12.548757] [ 12.548829] Memory state around the buggy address: [ 12.549117] ffff8881039f3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.549491] ffff8881039f3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.549919] >ffff8881039f4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.550637] ^ [ 12.550828] ffff8881039f4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.551277] ffff8881039f4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.551647] ================================================================== [ 12.601788] ================================================================== [ 12.602609] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 12.603053] Read of size 1 at addr ffff888103a30000 by task kunit_try_catch/251 [ 12.603591] [ 12.603891] CPU: 1 UID: 0 PID: 251 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7-next-20250526 #1 PREEMPT(voluntary) [ 12.603940] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.603953] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.603976] Call Trace: [ 12.603988] <TASK> [ 12.604005] dump_stack_lvl+0x73/0xb0 [ 12.604036] print_report+0xd1/0x650 [ 12.604060] ? __virt_addr_valid+0x1db/0x2d0 [ 12.604120] ? mempool_uaf_helper+0x392/0x400 [ 12.604156] ? kasan_addr_to_slab+0x11/0xa0 [ 12.604177] ? mempool_uaf_helper+0x392/0x400 [ 12.604211] kasan_report+0x141/0x180 [ 12.604235] ? mempool_uaf_helper+0x392/0x400 [ 12.604263] __asan_report_load1_noabort+0x18/0x20 [ 12.604285] mempool_uaf_helper+0x392/0x400 [ 12.604308] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 12.604332] ? __kasan_check_write+0x18/0x20 [ 12.604352] ? __pfx_sched_clock_cpu+0x10/0x10 [ 12.604386] ? finish_task_switch.isra.0+0x153/0x700 [ 12.604412] mempool_page_alloc_uaf+0xed/0x140 [ 12.604437] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 12.604464] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 12.604485] ? __pfx_mempool_free_pages+0x10/0x10 [ 12.604508] ? __pfx_read_tsc+0x10/0x10 [ 12.604529] ? ktime_get_ts64+0x86/0x230 [ 12.604553] kunit_try_run_case+0x1a5/0x480 [ 12.604575] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.604595] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.604621] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.604647] ? __kthread_parkme+0x82/0x180 [ 12.604666] ? preempt_count_sub+0x50/0x80 [ 12.604689] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.604727] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.604751] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.604775] kthread+0x337/0x6f0 [ 12.604795] ? trace_preempt_on+0x20/0xc0 [ 12.604820] ? __pfx_kthread+0x10/0x10 [ 12.604841] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.604863] ? calculate_sigpending+0x7b/0xa0 [ 12.604889] ? __pfx_kthread+0x10/0x10 [ 12.604910] ret_from_fork+0x116/0x1d0 [ 12.604929] ? __pfx_kthread+0x10/0x10 [ 12.604949] ret_from_fork_asm+0x1a/0x30 [ 12.604979] </TASK> [ 12.605004] [ 12.618179] The buggy address belongs to the physical page: [ 12.618365] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a30 [ 12.619339] flags: 0x200000000000000(node=0|zone=2) [ 12.619846] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 12.620837] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 12.621721] page dumped because: kasan: bad access detected [ 12.622331] [ 12.622523] Memory state around the buggy address: [ 12.623039] ffff888103a2ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.623688] ffff888103a2ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.624535] >ffff888103a30000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.625210] ^ [ 12.625581] ffff888103a30080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.626314] ffff888103a30100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.627221] ==================================================================