Date
July 18, 2025, 1:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.622238] ================================================================== [ 33.622293] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 33.622711] Read of size 1 at addr fff00000c9bb4000 by task kunit_try_catch/260 [ 33.623093] [ 33.623182] CPU: 0 UID: 0 PID: 260 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250718 #1 PREEMPT [ 33.623271] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.623299] Hardware name: linux,dummy-virt (DT) [ 33.623376] Call trace: [ 33.623404] show_stack+0x20/0x38 (C) [ 33.623483] dump_stack_lvl+0x8c/0xd0 [ 33.623660] print_report+0x118/0x5e8 [ 33.623732] kasan_report+0xdc/0x128 [ 33.623841] __asan_report_load1_noabort+0x20/0x30 [ 33.623927] mempool_uaf_helper+0x314/0x340 [ 33.624016] mempool_kmalloc_large_uaf+0xc4/0x120 [ 33.624104] kunit_try_run_case+0x170/0x3f0 [ 33.624270] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.624331] kthread+0x328/0x630 [ 33.624373] ret_from_fork+0x10/0x20 [ 33.624429] [ 33.624451] The buggy address belongs to the physical page: [ 33.624486] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109bb4 [ 33.624538] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 33.624583] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 33.624745] page_type: f8(unknown) [ 33.624813] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 33.624915] raw: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 33.624995] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 33.625130] head: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 33.625181] head: 0bfffe0000000002 ffffc1ffc326ed01 00000000ffffffff 00000000ffffffff [ 33.625263] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 33.625539] page dumped because: kasan: bad access detected [ 33.625614] [ 33.625700] Memory state around the buggy address: [ 33.625801] fff00000c9bb3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.626099] fff00000c9bb3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.626250] >fff00000c9bb4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.626338] ^ [ 33.626625] fff00000c9bb4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.626691] fff00000c9bb4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.626773] ================================================================== [ 33.664209] ================================================================== [ 33.664279] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 33.664422] Read of size 1 at addr fff00000c9bb4000 by task kunit_try_catch/264 [ 33.664500] [ 33.664535] CPU: 0 UID: 0 PID: 264 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250718 #1 PREEMPT [ 33.664653] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.664682] Hardware name: linux,dummy-virt (DT) [ 33.664715] Call trace: [ 33.664804] show_stack+0x20/0x38 (C) [ 33.664858] dump_stack_lvl+0x8c/0xd0 [ 33.664963] print_report+0x118/0x5e8 [ 33.665037] kasan_report+0xdc/0x128 [ 33.665224] __asan_report_load1_noabort+0x20/0x30 [ 33.665286] mempool_uaf_helper+0x314/0x340 [ 33.665334] mempool_page_alloc_uaf+0xc0/0x118 [ 33.665524] kunit_try_run_case+0x170/0x3f0 [ 33.665592] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.665668] kthread+0x328/0x630 [ 33.665713] ret_from_fork+0x10/0x20 [ 33.665780] [ 33.665852] The buggy address belongs to the physical page: [ 33.665888] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109bb4 [ 33.665942] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.666004] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 33.666056] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 33.666107] page dumped because: kasan: bad access detected [ 33.666339] [ 33.666369] Memory state around the buggy address: [ 33.666531] fff00000c9bb3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.666597] fff00000c9bb3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.666700] >fff00000c9bb4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.666757] ^ [ 33.666788] fff00000c9bb4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.666831] fff00000c9bb4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.667044] ==================================================================
[ 26.472030] ================================================================== [ 26.472454] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 26.473292] Read of size 1 at addr ffff88810622c000 by task kunit_try_catch/281 [ 26.474155] [ 26.474426] CPU: 0 UID: 0 PID: 281 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250718 #1 PREEMPT(voluntary) [ 26.474485] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.474498] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.474522] Call Trace: [ 26.474536] <TASK> [ 26.474556] dump_stack_lvl+0x73/0xb0 [ 26.474593] print_report+0xd1/0x640 [ 26.474617] ? __virt_addr_valid+0x1db/0x2d0 [ 26.474648] ? mempool_uaf_helper+0x392/0x400 [ 26.474670] ? kasan_addr_to_slab+0x11/0xa0 [ 26.474691] ? mempool_uaf_helper+0x392/0x400 [ 26.474712] kasan_report+0x141/0x180 [ 26.474734] ? mempool_uaf_helper+0x392/0x400 [ 26.474759] __asan_report_load1_noabort+0x18/0x20 [ 26.474838] mempool_uaf_helper+0x392/0x400 [ 26.474863] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 26.474885] ? dequeue_entities+0x23f/0x1630 [ 26.474912] ? __kasan_check_write+0x18/0x20 [ 26.474948] ? __pfx_sched_clock_cpu+0x10/0x10 [ 26.474970] ? finish_task_switch.isra.0+0x153/0x700 [ 26.474997] mempool_page_alloc_uaf+0xed/0x140 [ 26.475019] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 26.475045] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 26.475071] ? __pfx_mempool_free_pages+0x10/0x10 [ 26.475096] ? __pfx_read_tsc+0x10/0x10 [ 26.475118] ? ktime_get_ts64+0x86/0x230 [ 26.475143] kunit_try_run_case+0x1a5/0x480 [ 26.475171] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.475192] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 26.475228] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.475270] ? __kthread_parkme+0x82/0x180 [ 26.475292] ? preempt_count_sub+0x50/0x80 [ 26.475316] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.475339] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.475361] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.475383] kthread+0x337/0x6f0 [ 26.475403] ? trace_preempt_on+0x20/0xc0 [ 26.475426] ? __pfx_kthread+0x10/0x10 [ 26.475447] ? _raw_spin_unlock_irq+0x47/0x80 [ 26.475476] ? calculate_sigpending+0x7b/0xa0 [ 26.475501] ? __pfx_kthread+0x10/0x10 [ 26.475523] ret_from_fork+0x116/0x1d0 [ 26.475541] ? __pfx_kthread+0x10/0x10 [ 26.475561] ret_from_fork_asm+0x1a/0x30 [ 26.475593] </TASK> [ 26.475605] [ 26.485033] The buggy address belongs to the physical page: [ 26.485308] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10622c [ 26.485692] flags: 0x200000000000000(node=0|zone=2) [ 26.486080] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 26.486439] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 26.486840] page dumped because: kasan: bad access detected [ 26.487120] [ 26.487194] Memory state around the buggy address: [ 26.487422] ffff88810622bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.487731] ffff88810622bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.488069] >ffff88810622c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.488284] ^ [ 26.488394] ffff88810622c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.488675] ffff88810622c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.488993] ================================================================== [ 26.405957] ================================================================== [ 26.406415] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 26.406708] Read of size 1 at addr ffff888106250000 by task kunit_try_catch/277 [ 26.407077] [ 26.407162] CPU: 1 UID: 0 PID: 277 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250718 #1 PREEMPT(voluntary) [ 26.407224] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.407236] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.407269] Call Trace: [ 26.407282] <TASK> [ 26.407299] dump_stack_lvl+0x73/0xb0 [ 26.407330] print_report+0xd1/0x640 [ 26.407352] ? __virt_addr_valid+0x1db/0x2d0 [ 26.407376] ? mempool_uaf_helper+0x392/0x400 [ 26.407397] ? kasan_addr_to_slab+0x11/0xa0 [ 26.407417] ? mempool_uaf_helper+0x392/0x400 [ 26.407440] kasan_report+0x141/0x180 [ 26.407463] ? mempool_uaf_helper+0x392/0x400 [ 26.407488] __asan_report_load1_noabort+0x18/0x20 [ 26.407512] mempool_uaf_helper+0x392/0x400 [ 26.407534] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 26.407559] ? finish_task_switch.isra.0+0x153/0x700 [ 26.407621] mempool_kmalloc_large_uaf+0xef/0x140 [ 26.407644] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 26.407681] ? __pfx_mempool_kmalloc+0x10/0x10 [ 26.407705] ? __pfx_mempool_kfree+0x10/0x10 [ 26.407729] ? __pfx_read_tsc+0x10/0x10 [ 26.407750] ? ktime_get_ts64+0x86/0x230 [ 26.407775] kunit_try_run_case+0x1a5/0x480 [ 26.407810] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.407832] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 26.407856] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.407879] ? __kthread_parkme+0x82/0x180 [ 26.407899] ? preempt_count_sub+0x50/0x80 [ 26.407921] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.407945] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.407968] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.407990] kthread+0x337/0x6f0 [ 26.408010] ? trace_preempt_on+0x20/0xc0 [ 26.408032] ? __pfx_kthread+0x10/0x10 [ 26.408052] ? _raw_spin_unlock_irq+0x47/0x80 [ 26.408073] ? calculate_sigpending+0x7b/0xa0 [ 26.408097] ? __pfx_kthread+0x10/0x10 [ 26.408119] ret_from_fork+0x116/0x1d0 [ 26.408138] ? __pfx_kthread+0x10/0x10 [ 26.408392] ret_from_fork_asm+0x1a/0x30 [ 26.408423] </TASK> [ 26.408434] [ 26.416041] The buggy address belongs to the physical page: [ 26.416318] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106250 [ 26.416684] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 26.417116] flags: 0x200000000000040(head|node=0|zone=2) [ 26.417311] page_type: f8(unknown) [ 26.417440] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 26.417782] raw: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 26.418112] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 26.418394] head: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 26.418719] head: 0200000000000002 ffffea0004189401 00000000ffffffff 00000000ffffffff [ 26.419013] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 26.419239] page dumped because: kasan: bad access detected [ 26.419789] [ 26.419882] Memory state around the buggy address: [ 26.420114] ffff88810624ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.420602] ffff88810624ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.421009] >ffff888106250000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.421317] ^ [ 26.421433] ffff888106250080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.421643] ffff888106250100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.421846] ==================================================================