Date
July 20, 2025, 11:12 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.387785] ================================================================== [ 17.387878] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.387938] Read of size 1 at addr fff00000c7898000 by task kunit_try_catch/233 [ 17.387988] [ 17.388024] CPU: 0 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.388306] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.388405] Hardware name: linux,dummy-virt (DT) [ 17.388574] Call trace: [ 17.388659] show_stack+0x20/0x38 (C) [ 17.388786] dump_stack_lvl+0x8c/0xd0 [ 17.388834] print_report+0x118/0x5d0 [ 17.388881] kasan_report+0xdc/0x128 [ 17.388925] __asan_report_load1_noabort+0x20/0x30 [ 17.388980] mempool_uaf_helper+0x314/0x340 [ 17.389034] mempool_page_alloc_uaf+0xc0/0x118 [ 17.389271] kunit_try_run_case+0x170/0x3f0 [ 17.389474] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.389602] kthread+0x328/0x630 [ 17.389644] ret_from_fork+0x10/0x20 [ 17.390073] [ 17.390109] The buggy address belongs to the physical page: [ 17.390389] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107898 [ 17.390679] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.390745] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 17.390796] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 17.390945] page dumped because: kasan: bad access detected [ 17.391261] [ 17.391418] Memory state around the buggy address: [ 17.391454] fff00000c7897f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.391592] fff00000c7897f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.391692] >fff00000c7898000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.391778] ^ [ 17.391821] fff00000c7898080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.391943] fff00000c7898100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.391986] ================================================================== [ 17.345874] ================================================================== [ 17.345953] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.346017] Read of size 1 at addr fff00000c7898000 by task kunit_try_catch/229 [ 17.346068] [ 17.346106] CPU: 0 UID: 0 PID: 229 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.346192] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.346220] Hardware name: linux,dummy-virt (DT) [ 17.346253] Call trace: [ 17.346277] show_stack+0x20/0x38 (C) [ 17.346327] dump_stack_lvl+0x8c/0xd0 [ 17.346375] print_report+0x118/0x5d0 [ 17.346423] kasan_report+0xdc/0x128 [ 17.346468] __asan_report_load1_noabort+0x20/0x30 [ 17.346519] mempool_uaf_helper+0x314/0x340 [ 17.346564] mempool_kmalloc_large_uaf+0xc4/0x120 [ 17.346613] kunit_try_run_case+0x170/0x3f0 [ 17.346675] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.346728] kthread+0x328/0x630 [ 17.346771] ret_from_fork+0x10/0x20 [ 17.346819] [ 17.346841] The buggy address belongs to the physical page: [ 17.346876] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107898 [ 17.346932] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 17.346980] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 17.347065] page_type: f8(unknown) [ 17.347128] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 17.347177] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 17.347228] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 17.347276] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 17.347324] head: 0bfffe0000000002 ffffc1ffc31e2601 00000000ffffffff 00000000ffffffff [ 17.347373] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 17.347414] page dumped because: kasan: bad access detected [ 17.347446] [ 17.347464] Memory state around the buggy address: [ 17.347496] fff00000c7897f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.347537] fff00000c7897f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.347579] >fff00000c7898000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.347617] ^ [ 17.347646] fff00000c7898080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.347697] fff00000c7898100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.347736] ==================================================================
[ 13.856070] ================================================================== [ 13.856576] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 13.857041] Read of size 1 at addr ffff888103ac0000 by task kunit_try_catch/246 [ 13.857267] [ 13.857411] CPU: 1 UID: 0 PID: 246 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.857458] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.857470] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.857492] Call Trace: [ 13.857506] <TASK> [ 13.857521] dump_stack_lvl+0x73/0xb0 [ 13.857550] print_report+0xd1/0x610 [ 13.857571] ? __virt_addr_valid+0x1db/0x2d0 [ 13.857592] ? mempool_uaf_helper+0x392/0x400 [ 13.857614] ? kasan_addr_to_slab+0x11/0xa0 [ 13.857633] ? mempool_uaf_helper+0x392/0x400 [ 13.857654] kasan_report+0x141/0x180 [ 13.857676] ? mempool_uaf_helper+0x392/0x400 [ 13.857702] __asan_report_load1_noabort+0x18/0x20 [ 13.857725] mempool_uaf_helper+0x392/0x400 [ 13.857748] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 13.857768] ? update_load_avg+0x1be/0x21b0 [ 13.857791] ? dequeue_entities+0x27e/0x1740 [ 13.857830] ? finish_task_switch.isra.0+0x153/0x700 [ 13.857855] mempool_kmalloc_large_uaf+0xef/0x140 [ 13.857876] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 13.857902] ? __pfx_mempool_kmalloc+0x10/0x10 [ 13.857936] ? __pfx_mempool_kfree+0x10/0x10 [ 13.857960] ? __pfx_read_tsc+0x10/0x10 [ 13.857980] ? ktime_get_ts64+0x86/0x230 [ 13.858004] kunit_try_run_case+0x1a5/0x480 [ 13.858027] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.858048] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.858071] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.858092] ? __kthread_parkme+0x82/0x180 [ 13.858112] ? preempt_count_sub+0x50/0x80 [ 13.858133] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.858156] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.858178] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.858200] kthread+0x337/0x6f0 [ 13.858219] ? trace_preempt_on+0x20/0xc0 [ 13.858241] ? __pfx_kthread+0x10/0x10 [ 13.858260] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.858281] ? calculate_sigpending+0x7b/0xa0 [ 13.858303] ? __pfx_kthread+0x10/0x10 [ 13.858323] ret_from_fork+0x116/0x1d0 [ 13.858341] ? __pfx_kthread+0x10/0x10 [ 13.858410] ret_from_fork_asm+0x1a/0x30 [ 13.858439] </TASK> [ 13.858449] [ 13.872256] The buggy address belongs to the physical page: [ 13.872504] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103ac0 [ 13.872867] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 13.873126] flags: 0x200000000000040(head|node=0|zone=2) [ 13.873383] page_type: f8(unknown) [ 13.873552] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 13.873872] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 13.874174] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 13.874478] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 13.874740] head: 0200000000000002 ffffea00040eb001 00000000ffffffff 00000000ffffffff [ 13.874980] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 13.875318] page dumped because: kasan: bad access detected [ 13.875787] [ 13.875881] Memory state around the buggy address: [ 13.876050] ffff888103abff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.876421] ffff888103abff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.876810] >ffff888103ac0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.877094] ^ [ 13.877244] ffff888103ac0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.877629] ffff888103ac0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.877954] ================================================================== [ 13.914047] ================================================================== [ 13.914464] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 13.914865] Read of size 1 at addr ffff888102b8c000 by task kunit_try_catch/250 [ 13.915319] [ 13.915747] CPU: 0 UID: 0 PID: 250 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.915808] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.915819] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.915841] Call Trace: [ 13.915853] <TASK> [ 13.915868] dump_stack_lvl+0x73/0xb0 [ 13.915900] print_report+0xd1/0x610 [ 13.915934] ? __virt_addr_valid+0x1db/0x2d0 [ 13.915957] ? mempool_uaf_helper+0x392/0x400 [ 13.915978] ? kasan_addr_to_slab+0x11/0xa0 [ 13.915998] ? mempool_uaf_helper+0x392/0x400 [ 13.916021] kasan_report+0x141/0x180 [ 13.916042] ? mempool_uaf_helper+0x392/0x400 [ 13.916070] __asan_report_load1_noabort+0x18/0x20 [ 13.916093] mempool_uaf_helper+0x392/0x400 [ 13.916115] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 13.916138] ? __kasan_check_write+0x18/0x20 [ 13.916156] ? __pfx_sched_clock_cpu+0x10/0x10 [ 13.916178] ? finish_task_switch.isra.0+0x153/0x700 [ 13.916203] mempool_page_alloc_uaf+0xed/0x140 [ 13.916226] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 13.916251] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 13.916275] ? __pfx_mempool_free_pages+0x10/0x10 [ 13.916300] ? __pfx_read_tsc+0x10/0x10 [ 13.916320] ? ktime_get_ts64+0x86/0x230 [ 13.916343] kunit_try_run_case+0x1a5/0x480 [ 13.916367] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.916388] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.916411] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.916434] ? __kthread_parkme+0x82/0x180 [ 13.916453] ? preempt_count_sub+0x50/0x80 [ 13.916474] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.916497] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.916520] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.916542] kthread+0x337/0x6f0 [ 13.916560] ? trace_preempt_on+0x20/0xc0 [ 13.916583] ? __pfx_kthread+0x10/0x10 [ 13.916602] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.916623] ? calculate_sigpending+0x7b/0xa0 [ 13.916646] ? __pfx_kthread+0x10/0x10 [ 13.916666] ret_from_fork+0x116/0x1d0 [ 13.916684] ? __pfx_kthread+0x10/0x10 [ 13.916703] ret_from_fork_asm+0x1a/0x30 [ 13.916733] </TASK> [ 13.916743] [ 13.925418] The buggy address belongs to the physical page: [ 13.925693] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b8c [ 13.926037] flags: 0x200000000000000(node=0|zone=2) [ 13.926223] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 13.926828] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 13.927131] page dumped because: kasan: bad access detected [ 13.927347] [ 13.927443] Memory state around the buggy address: [ 13.927639] ffff888102b8bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.927963] ffff888102b8bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.928223] >ffff888102b8c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.928503] ^ [ 13.928655] ffff888102b8c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.929035] ffff888102b8c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.929258] ==================================================================