Date
July 15, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.590260] ================================================================== [ 17.590324] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.590385] Read of size 1 at addr fff00000c78f4000 by task kunit_try_catch/234 [ 17.590435] [ 17.590469] CPU: 1 UID: 0 PID: 234 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.590554] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.590580] Hardware name: linux,dummy-virt (DT) [ 17.590611] Call trace: [ 17.590642] show_stack+0x20/0x38 (C) [ 17.590896] dump_stack_lvl+0x8c/0xd0 [ 17.590976] print_report+0x118/0x5d0 [ 17.591493] kasan_report+0xdc/0x128 [ 17.591902] __asan_report_load1_noabort+0x20/0x30 [ 17.592467] mempool_uaf_helper+0x314/0x340 [ 17.592779] mempool_page_alloc_uaf+0xc0/0x118 [ 17.592854] kunit_try_run_case+0x170/0x3f0 [ 17.593030] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.593503] kthread+0x328/0x630 [ 17.593876] ret_from_fork+0x10/0x20 [ 17.593929] [ 17.593950] The buggy address belongs to the physical page: [ 17.594057] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078f4 [ 17.594120] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.594194] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 17.594389] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 17.594432] page dumped because: kasan: bad access detected [ 17.594465] [ 17.594679] Memory state around the buggy address: [ 17.594731] fff00000c78f3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.594776] fff00000c78f3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.594821] >fff00000c78f4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.594860] ^ [ 17.594896] fff00000c78f4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.595091] fff00000c78f4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.595158] ================================================================== [ 17.535121] ================================================================== [ 17.535205] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.537749] Read of size 1 at addr fff00000c78ec000 by task kunit_try_catch/230 [ 17.538290] [ 17.539020] CPU: 1 UID: 0 PID: 230 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.539655] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.539717] Hardware name: linux,dummy-virt (DT) [ 17.540487] Call trace: [ 17.540810] show_stack+0x20/0x38 (C) [ 17.541045] dump_stack_lvl+0x8c/0xd0 [ 17.541101] print_report+0x118/0x5d0 [ 17.542167] kasan_report+0xdc/0x128 [ 17.542411] __asan_report_load1_noabort+0x20/0x30 [ 17.542598] mempool_uaf_helper+0x314/0x340 [ 17.543534] mempool_kmalloc_large_uaf+0xc4/0x120 [ 17.543712] kunit_try_run_case+0x170/0x3f0 [ 17.544096] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.544157] kthread+0x328/0x630 [ 17.544747] ret_from_fork+0x10/0x20 [ 17.545223] [ 17.545398] The buggy address belongs to the physical page: [ 17.545617] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078ec [ 17.546345] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 17.547058] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 17.547465] page_type: f8(unknown) [ 17.548068] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 17.548266] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 17.548574] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 17.549066] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 17.549438] head: 0bfffe0000000002 ffffc1ffc31e3b01 00000000ffffffff 00000000ffffffff [ 17.549881] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 17.550198] page dumped because: kasan: bad access detected [ 17.550235] [ 17.550453] Memory state around the buggy address: [ 17.550692] fff00000c78ebf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.551785] fff00000c78ebf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.551858] >fff00000c78ec000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.551901] ^ [ 17.551930] fff00000c78ec080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.551973] fff00000c78ec100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.552481] ==================================================================
[ 14.066282] ================================================================== [ 14.066961] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 14.067244] Read of size 1 at addr ffff8881039c8000 by task kunit_try_catch/246 [ 14.067586] [ 14.067691] CPU: 1 UID: 0 PID: 246 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 14.067734] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.067746] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.067778] Call Trace: [ 14.067790] <TASK> [ 14.067804] dump_stack_lvl+0x73/0xb0 [ 14.067834] print_report+0xd1/0x610 [ 14.067856] ? __virt_addr_valid+0x1db/0x2d0 [ 14.067879] ? mempool_uaf_helper+0x392/0x400 [ 14.067903] ? kasan_addr_to_slab+0x11/0xa0 [ 14.067924] ? mempool_uaf_helper+0x392/0x400 [ 14.067949] kasan_report+0x141/0x180 [ 14.067974] ? mempool_uaf_helper+0x392/0x400 [ 14.068002] __asan_report_load1_noabort+0x18/0x20 [ 14.068029] mempool_uaf_helper+0x392/0x400 [ 14.068053] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 14.068076] ? update_load_avg+0x1be/0x21b0 [ 14.068101] ? update_load_avg+0x1be/0x21b0 [ 14.068122] ? update_curr+0x80/0x810 [ 14.068145] ? finish_task_switch.isra.0+0x153/0x700 [ 14.068172] mempool_kmalloc_large_uaf+0xef/0x140 [ 14.068199] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 14.068226] ? __pfx_mempool_kmalloc+0x10/0x10 [ 14.068251] ? __pfx_mempool_kfree+0x10/0x10 [ 14.068277] ? __pfx_read_tsc+0x10/0x10 [ 14.068299] ? ktime_get_ts64+0x86/0x230 [ 14.068323] kunit_try_run_case+0x1a5/0x480 [ 14.068349] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.068373] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.068398] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.068422] ? __kthread_parkme+0x82/0x180 [ 14.068443] ? preempt_count_sub+0x50/0x80 [ 14.068475] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.068501] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.068527] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.068553] kthread+0x337/0x6f0 [ 14.068573] ? trace_preempt_on+0x20/0xc0 [ 14.068597] ? __pfx_kthread+0x10/0x10 [ 14.068618] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.068640] ? calculate_sigpending+0x7b/0xa0 [ 14.068664] ? __pfx_kthread+0x10/0x10 [ 14.068687] ret_from_fork+0x116/0x1d0 [ 14.068706] ? __pfx_kthread+0x10/0x10 [ 14.068727] ret_from_fork_asm+0x1a/0x30 [ 14.068769] </TASK> [ 14.068779] [ 14.076845] The buggy address belongs to the physical page: [ 14.077062] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039c8 [ 14.077317] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 14.077746] flags: 0x200000000000040(head|node=0|zone=2) [ 14.078008] page_type: f8(unknown) [ 14.078146] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 14.078378] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 14.078610] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 14.078957] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 14.079297] head: 0200000000000002 ffffea00040e7201 00000000ffffffff 00000000ffffffff [ 14.079719] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 14.079985] page dumped because: kasan: bad access detected [ 14.080240] [ 14.080334] Memory state around the buggy address: [ 14.080599] ffff8881039c7f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.080827] ffff8881039c7f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.081044] >ffff8881039c8000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.081362] ^ [ 14.081647] ffff8881039c8080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.081979] ffff8881039c8100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.082262] ================================================================== [ 14.124644] ================================================================== [ 14.125080] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 14.125313] Read of size 1 at addr ffff8881029d4000 by task kunit_try_catch/250 [ 14.126047] [ 14.126240] CPU: 0 UID: 0 PID: 250 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 14.126288] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.126301] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.126335] Call Trace: [ 14.126348] <TASK> [ 14.126366] dump_stack_lvl+0x73/0xb0 [ 14.126402] print_report+0xd1/0x610 [ 14.126424] ? __virt_addr_valid+0x1db/0x2d0 [ 14.126510] ? mempool_uaf_helper+0x392/0x400 [ 14.126534] ? kasan_addr_to_slab+0x11/0xa0 [ 14.126568] ? mempool_uaf_helper+0x392/0x400 [ 14.126590] kasan_report+0x141/0x180 [ 14.126614] ? mempool_uaf_helper+0x392/0x400 [ 14.126643] __asan_report_load1_noabort+0x18/0x20 [ 14.126668] mempool_uaf_helper+0x392/0x400 [ 14.126692] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 14.126715] ? update_load_avg+0x1be/0x21b0 [ 14.126748] ? dequeue_entities+0x27e/0x1740 [ 14.126788] ? finish_task_switch.isra.0+0x153/0x700 [ 14.126816] mempool_page_alloc_uaf+0xed/0x140 [ 14.126840] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 14.126868] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 14.126896] ? __pfx_mempool_free_pages+0x10/0x10 [ 14.126924] ? __pfx_read_tsc+0x10/0x10 [ 14.126946] ? ktime_get_ts64+0x86/0x230 [ 14.126971] kunit_try_run_case+0x1a5/0x480 [ 14.126998] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.127021] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.127047] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.127071] ? __kthread_parkme+0x82/0x180 [ 14.127093] ? preempt_count_sub+0x50/0x80 [ 14.127116] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.127141] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.127166] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.127193] kthread+0x337/0x6f0 [ 14.127212] ? trace_preempt_on+0x20/0xc0 [ 14.127237] ? __pfx_kthread+0x10/0x10 [ 14.127258] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.127280] ? calculate_sigpending+0x7b/0xa0 [ 14.127304] ? __pfx_kthread+0x10/0x10 [ 14.127327] ret_from_fork+0x116/0x1d0 [ 14.127426] ? __pfx_kthread+0x10/0x10 [ 14.127460] ret_from_fork_asm+0x1a/0x30 [ 14.127493] </TASK> [ 14.127503] [ 14.142314] The buggy address belongs to the physical page: [ 14.142837] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029d4 [ 14.143089] flags: 0x200000000000000(node=0|zone=2) [ 14.143267] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 14.143992] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 14.144693] page dumped because: kasan: bad access detected [ 14.145305] [ 14.145544] Memory state around the buggy address: [ 14.146008] ffff8881029d3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.146669] ffff8881029d3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.147094] >ffff8881029d4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.147312] ^ [ 14.147772] ffff8881029d4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.148438] ffff8881029d4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.149137] ==================================================================