Date
July 23, 2025, 2:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.502562] ================================================================== [ 17.502636] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.502739] Read of size 1 at addr fff00000c77ac000 by task kunit_try_catch/233 [ 17.502890] [ 17.502954] CPU: 0 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT [ 17.503041] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.503067] Hardware name: linux,dummy-virt (DT) [ 17.503099] Call trace: [ 17.503121] show_stack+0x20/0x38 (C) [ 17.503526] dump_stack_lvl+0x8c/0xd0 [ 17.503678] print_report+0x118/0x5d0 [ 17.503822] kasan_report+0xdc/0x128 [ 17.503966] __asan_report_load1_noabort+0x20/0x30 [ 17.504088] mempool_uaf_helper+0x314/0x340 [ 17.504222] mempool_page_alloc_uaf+0xc0/0x118 [ 17.504290] kunit_try_run_case+0x170/0x3f0 [ 17.504684] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.504862] kthread+0x328/0x630 [ 17.504928] ret_from_fork+0x10/0x20 [ 17.505024] [ 17.505348] The buggy address belongs to the physical page: [ 17.505449] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077ac [ 17.505638] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.505794] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 17.505949] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 17.506027] page dumped because: kasan: bad access detected [ 17.506125] [ 17.506143] Memory state around the buggy address: [ 17.506176] fff00000c77abf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.506676] fff00000c77abf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.506777] >fff00000c77ac000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.506930] ^ [ 17.507009] fff00000c77ac080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.507080] fff00000c77ac100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.507201] ================================================================== [ 17.469740] ================================================================== [ 17.469803] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.469868] Read of size 1 at addr fff00000c77ac000 by task kunit_try_catch/229 [ 17.469921] [ 17.469952] CPU: 0 UID: 0 PID: 229 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT [ 17.470037] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.470065] Hardware name: linux,dummy-virt (DT) [ 17.470097] Call trace: [ 17.470504] show_stack+0x20/0x38 (C) [ 17.470674] dump_stack_lvl+0x8c/0xd0 [ 17.470745] print_report+0x118/0x5d0 [ 17.470828] kasan_report+0xdc/0x128 [ 17.470956] __asan_report_load1_noabort+0x20/0x30 [ 17.471049] mempool_uaf_helper+0x314/0x340 [ 17.471097] mempool_kmalloc_large_uaf+0xc4/0x120 [ 17.471146] kunit_try_run_case+0x170/0x3f0 [ 17.471193] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.471439] kthread+0x328/0x630 [ 17.471548] ret_from_fork+0x10/0x20 [ 17.471707] [ 17.471741] The buggy address belongs to the physical page: [ 17.471783] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077ac [ 17.471872] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 17.471921] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 17.472197] page_type: f8(unknown) [ 17.472279] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 17.472333] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 17.472445] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 17.472496] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 17.472548] head: 0bfffe0000000002 ffffc1ffc31deb01 00000000ffffffff 00000000ffffffff [ 17.472767] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 17.472928] page dumped because: kasan: bad access detected [ 17.473017] [ 17.473123] Memory state around the buggy address: [ 17.473175] fff00000c77abf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.473256] fff00000c77abf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.473617] >fff00000c77ac000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.473733] ^ [ 17.473803] fff00000c77ac080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.473848] fff00000c77ac100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.474182] ==================================================================
[ 14.201572] ================================================================== [ 14.202402] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 14.202738] Read of size 1 at addr ffff888103a74000 by task kunit_try_catch/250 [ 14.203042] [ 14.203848] CPU: 1 UID: 0 PID: 250 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT(voluntary) [ 14.203899] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.204025] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.204053] Call Trace: [ 14.204065] <TASK> [ 14.204081] dump_stack_lvl+0x73/0xb0 [ 14.204128] print_report+0xd1/0x610 [ 14.204151] ? __virt_addr_valid+0x1db/0x2d0 [ 14.204207] ? mempool_uaf_helper+0x392/0x400 [ 14.204312] ? kasan_addr_to_slab+0x11/0xa0 [ 14.204334] ? mempool_uaf_helper+0x392/0x400 [ 14.204356] kasan_report+0x141/0x180 [ 14.204377] ? mempool_uaf_helper+0x392/0x400 [ 14.204404] __asan_report_load1_noabort+0x18/0x20 [ 14.204428] mempool_uaf_helper+0x392/0x400 [ 14.204450] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 14.204473] ? __kasan_check_write+0x18/0x20 [ 14.204493] ? __pfx_sched_clock_cpu+0x10/0x10 [ 14.204513] ? irqentry_exit+0x2a/0x60 [ 14.204536] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 14.204562] mempool_page_alloc_uaf+0xed/0x140 [ 14.204585] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 14.204611] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 14.204636] ? __pfx_mempool_free_pages+0x10/0x10 [ 14.204660] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 14.204686] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 14.204710] kunit_try_run_case+0x1a5/0x480 [ 14.204735] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.204757] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.204780] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.204803] ? __kthread_parkme+0x82/0x180 [ 14.204839] ? preempt_count_sub+0x50/0x80 [ 14.204866] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.204891] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.204913] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.204937] kthread+0x337/0x6f0 [ 14.204956] ? trace_preempt_on+0x20/0xc0 [ 14.204978] ? __pfx_kthread+0x10/0x10 [ 14.204998] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.205020] ? calculate_sigpending+0x7b/0xa0 [ 14.205042] ? __pfx_kthread+0x10/0x10 [ 14.205065] ret_from_fork+0x116/0x1d0 [ 14.205084] ? __pfx_kthread+0x10/0x10 [ 14.205105] ret_from_fork_asm+0x1a/0x30 [ 14.205135] </TASK> [ 14.205145] [ 14.219515] The buggy address belongs to the physical page: [ 14.219929] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a74 [ 14.220767] flags: 0x200000000000000(node=0|zone=2) [ 14.221034] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 14.221666] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 14.222001] page dumped because: kasan: bad access detected [ 14.222749] [ 14.223012] Memory state around the buggy address: [ 14.223509] ffff888103a73f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.223961] ffff888103a73f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.224697] >ffff888103a74000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.225382] ^ [ 14.225558] ffff888103a74080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.225865] ffff888103a74100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.226527] ================================================================== [ 14.134009] ================================================================== [ 14.135617] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 14.136821] Read of size 1 at addr ffff888103a74000 by task kunit_try_catch/246 [ 14.137061] [ 14.137533] CPU: 1 UID: 0 PID: 246 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT(voluntary) [ 14.137729] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.137780] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.137804] Call Trace: [ 14.137827] <TASK> [ 14.137843] dump_stack_lvl+0x73/0xb0 [ 14.137876] print_report+0xd1/0x610 [ 14.137900] ? __virt_addr_valid+0x1db/0x2d0 [ 14.137922] ? mempool_uaf_helper+0x392/0x400 [ 14.137943] ? kasan_addr_to_slab+0x11/0xa0 [ 14.137964] ? mempool_uaf_helper+0x392/0x400 [ 14.137986] kasan_report+0x141/0x180 [ 14.138008] ? mempool_uaf_helper+0x392/0x400 [ 14.138034] __asan_report_load1_noabort+0x18/0x20 [ 14.138057] mempool_uaf_helper+0x392/0x400 [ 14.138104] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 14.138129] ? __pfx_sched_clock_cpu+0x10/0x10 [ 14.138151] ? finish_task_switch.isra.0+0x153/0x700 [ 14.138176] mempool_kmalloc_large_uaf+0xef/0x140 [ 14.138216] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 14.138242] ? __pfx_mempool_kmalloc+0x10/0x10 [ 14.138265] ? __pfx_mempool_kfree+0x10/0x10 [ 14.138290] ? __pfx_read_tsc+0x10/0x10 [ 14.138310] ? ktime_get_ts64+0x86/0x230 [ 14.138333] kunit_try_run_case+0x1a5/0x480 [ 14.138359] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.138381] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.138404] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.138428] ? __kthread_parkme+0x82/0x180 [ 14.138447] ? preempt_count_sub+0x50/0x80 [ 14.138470] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.138493] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.138516] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.138539] kthread+0x337/0x6f0 [ 14.138558] ? trace_preempt_on+0x20/0xc0 [ 14.138581] ? __pfx_kthread+0x10/0x10 [ 14.138601] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.138623] ? calculate_sigpending+0x7b/0xa0 [ 14.138647] ? __pfx_kthread+0x10/0x10 [ 14.138669] ret_from_fork+0x116/0x1d0 [ 14.138687] ? __pfx_kthread+0x10/0x10 [ 14.138707] ret_from_fork_asm+0x1a/0x30 [ 14.138737] </TASK> [ 14.138748] [ 14.155502] The buggy address belongs to the physical page: [ 14.155914] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a74 [ 14.156449] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 14.156728] flags: 0x200000000000040(head|node=0|zone=2) [ 14.157216] page_type: f8(unknown) [ 14.157610] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 14.158057] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 14.158651] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 14.159188] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000 [ 14.159608] head: 0200000000000002 ffffea00040e9d01 00000000ffffffff 00000000ffffffff [ 14.159955] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 14.160548] page dumped because: kasan: bad access detected [ 14.160830] [ 14.160935] Memory state around the buggy address: [ 14.161272] ffff888103a73f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.161609] ffff888103a73f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.161954] >ffff888103a74000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.162378] ^ [ 14.162584] ffff888103a74080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.162913] ffff888103a74100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 14.163315] ==================================================================