Date
July 19, 2025, 11:12 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.361635] ================================================================== [ 17.361922] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.362116] Read of size 1 at addr fff00000c78e4000 by task kunit_try_catch/233 [ 17.362321] [ 17.362446] CPU: 0 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.362590] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.362617] Hardware name: linux,dummy-virt (DT) [ 17.362650] Call trace: [ 17.362674] show_stack+0x20/0x38 (C) [ 17.362857] dump_stack_lvl+0x8c/0xd0 [ 17.362940] print_report+0x118/0x5d0 [ 17.363207] kasan_report+0xdc/0x128 [ 17.363419] __asan_report_load1_noabort+0x20/0x30 [ 17.363640] mempool_uaf_helper+0x314/0x340 [ 17.363756] mempool_page_alloc_uaf+0xc0/0x118 [ 17.363802] kunit_try_run_case+0x170/0x3f0 [ 17.363860] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.363910] kthread+0x328/0x630 [ 17.363977] ret_from_fork+0x10/0x20 [ 17.364213] [ 17.364236] The buggy address belongs to the physical page: [ 17.364347] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078e4 [ 17.364414] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.364480] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 17.364529] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 17.364571] page dumped because: kasan: bad access detected [ 17.364601] [ 17.364621] Memory state around the buggy address: [ 17.364652] fff00000c78e3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.364705] fff00000c78e3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.364748] >fff00000c78e4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.364785] ^ [ 17.364824] fff00000c78e4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.364866] fff00000c78e4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.364904] ================================================================== [ 17.321435] ================================================================== [ 17.321490] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.321537] Read of size 1 at addr fff00000c78e4000 by task kunit_try_catch/229 [ 17.321585] [ 17.321625] CPU: 0 UID: 0 PID: 229 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.321758] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.321786] Hardware name: linux,dummy-virt (DT) [ 17.321818] Call trace: [ 17.321841] show_stack+0x20/0x38 (C) [ 17.321944] dump_stack_lvl+0x8c/0xd0 [ 17.321991] print_report+0x118/0x5d0 [ 17.322038] kasan_report+0xdc/0x128 [ 17.322351] __asan_report_load1_noabort+0x20/0x30 [ 17.322402] mempool_uaf_helper+0x314/0x340 [ 17.322448] mempool_kmalloc_large_uaf+0xc4/0x120 [ 17.322496] kunit_try_run_case+0x170/0x3f0 [ 17.322553] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.322606] kthread+0x328/0x630 [ 17.322648] ret_from_fork+0x10/0x20 [ 17.322705] [ 17.322726] The buggy address belongs to the physical page: [ 17.322758] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078e4 [ 17.322817] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 17.322883] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 17.323140] page_type: f8(unknown) [ 17.323322] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 17.323564] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 17.323703] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 17.323754] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 17.323803] head: 0bfffe0000000002 ffffc1ffc31e3901 00000000ffffffff 00000000ffffffff [ 17.323854] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 17.323904] page dumped because: kasan: bad access detected [ 17.323935] [ 17.323953] Memory state around the buggy address: [ 17.323986] fff00000c78e3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.324108] fff00000c78e3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.324153] >fff00000c78e4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.324191] ^ [ 17.324220] fff00000c78e4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.324263] fff00000c78e4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.324302] ==================================================================
[ 13.614591] ================================================================== [ 13.615128] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 13.615369] Read of size 1 at addr ffff888103a68000 by task kunit_try_catch/250 [ 13.616226] [ 13.616425] CPU: 0 UID: 0 PID: 250 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.616471] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.616483] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.616505] Call Trace: [ 13.616517] <TASK> [ 13.616532] dump_stack_lvl+0x73/0xb0 [ 13.616612] print_report+0xd1/0x610 [ 13.616635] ? __virt_addr_valid+0x1db/0x2d0 [ 13.616886] ? mempool_uaf_helper+0x392/0x400 [ 13.616907] ? kasan_addr_to_slab+0x11/0xa0 [ 13.616926] ? mempool_uaf_helper+0x392/0x400 [ 13.616948] kasan_report+0x141/0x180 [ 13.616973] ? mempool_uaf_helper+0x392/0x400 [ 13.616999] __asan_report_load1_noabort+0x18/0x20 [ 13.617032] mempool_uaf_helper+0x392/0x400 [ 13.617054] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 13.617076] ? __kasan_check_write+0x18/0x20 [ 13.617095] ? __pfx_sched_clock_cpu+0x10/0x10 [ 13.617117] ? finish_task_switch.isra.0+0x153/0x700 [ 13.617141] mempool_page_alloc_uaf+0xed/0x140 [ 13.617164] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 13.617190] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 13.617213] ? __pfx_mempool_free_pages+0x10/0x10 [ 13.617238] ? __pfx_read_tsc+0x10/0x10 [ 13.617258] ? ktime_get_ts64+0x86/0x230 [ 13.617281] kunit_try_run_case+0x1a5/0x480 [ 13.617306] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.617327] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.617350] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.617385] ? __kthread_parkme+0x82/0x180 [ 13.617407] ? preempt_count_sub+0x50/0x80 [ 13.617429] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.617452] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.617474] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.617496] kthread+0x337/0x6f0 [ 13.617515] ? trace_preempt_on+0x20/0xc0 [ 13.617537] ? __pfx_kthread+0x10/0x10 [ 13.617557] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.617577] ? calculate_sigpending+0x7b/0xa0 [ 13.617599] ? __pfx_kthread+0x10/0x10 [ 13.617619] ret_from_fork+0x116/0x1d0 [ 13.617637] ? __pfx_kthread+0x10/0x10 [ 13.617657] ret_from_fork_asm+0x1a/0x30 [ 13.617687] </TASK> [ 13.617698] [ 13.633979] The buggy address belongs to the physical page: [ 13.634737] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a68 [ 13.635192] flags: 0x200000000000000(node=0|zone=2) [ 13.635429] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 13.636116] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 13.636347] page dumped because: kasan: bad access detected [ 13.636936] [ 13.637129] Memory state around the buggy address: [ 13.637619] ffff888103a67f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.638042] ffff888103a67f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.638261] >ffff888103a68000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.638949] ^ [ 13.639275] ffff888103a68080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.640001] ffff888103a68100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.640679] ================================================================== [ 13.552734] ================================================================== [ 13.553707] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 13.554017] Read of size 1 at addr ffff8881039f4000 by task kunit_try_catch/246 [ 13.554315] [ 13.554703] CPU: 1 UID: 0 PID: 246 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.554751] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.554763] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.554784] Call Trace: [ 13.554795] <TASK> [ 13.554810] dump_stack_lvl+0x73/0xb0 [ 13.554839] print_report+0xd1/0x610 [ 13.554873] ? __virt_addr_valid+0x1db/0x2d0 [ 13.554895] ? mempool_uaf_helper+0x392/0x400 [ 13.554916] ? kasan_addr_to_slab+0x11/0xa0 [ 13.554948] ? mempool_uaf_helper+0x392/0x400 [ 13.554970] kasan_report+0x141/0x180 [ 13.554991] ? mempool_uaf_helper+0x392/0x400 [ 13.555026] __asan_report_load1_noabort+0x18/0x20 [ 13.555059] mempool_uaf_helper+0x392/0x400 [ 13.555081] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 13.555102] ? update_load_avg+0x1be/0x21b0 [ 13.555139] ? finish_task_switch.isra.0+0x153/0x700 [ 13.555164] mempool_kmalloc_large_uaf+0xef/0x140 [ 13.555186] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 13.555211] ? __pfx_mempool_kmalloc+0x10/0x10 [ 13.555234] ? __pfx_mempool_kfree+0x10/0x10 [ 13.555267] ? __pfx_read_tsc+0x10/0x10 [ 13.555287] ? ktime_get_ts64+0x86/0x230 [ 13.555310] kunit_try_run_case+0x1a5/0x480 [ 13.555343] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.555436] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.555465] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.555488] ? __kthread_parkme+0x82/0x180 [ 13.555508] ? preempt_count_sub+0x50/0x80 [ 13.555531] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.555554] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.555576] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.555599] kthread+0x337/0x6f0 [ 13.555617] ? trace_preempt_on+0x20/0xc0 [ 13.555639] ? __pfx_kthread+0x10/0x10 [ 13.555658] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.555679] ? calculate_sigpending+0x7b/0xa0 [ 13.555701] ? __pfx_kthread+0x10/0x10 [ 13.555722] ret_from_fork+0x116/0x1d0 [ 13.555739] ? __pfx_kthread+0x10/0x10 [ 13.555759] ret_from_fork_asm+0x1a/0x30 [ 13.555789] </TASK> [ 13.555799] [ 13.565744] The buggy address belongs to the physical page: [ 13.566058] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039f4 [ 13.566619] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 13.566984] flags: 0x200000000000040(head|node=0|zone=2) [ 13.567214] page_type: f8(unknown) [ 13.567461] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 13.567787] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 13.568129] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 13.568590] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 13.568934] head: 0200000000000002 ffffea00040e7d01 00000000ffffffff 00000000ffffffff [ 13.569262] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 13.569653] page dumped because: kasan: bad access detected [ 13.569877] [ 13.569994] Memory state around the buggy address: [ 13.570209] ffff8881039f3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.570726] ffff8881039f3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.571104] >ffff8881039f4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.571438] ^ [ 13.571569] ffff8881039f4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.571784] ffff8881039f4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.572001] ==================================================================