Date
June 25, 2025, 8:08 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 28.707995] ================================================================== [ 28.708223] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 28.708489] Read of size 1 at addr fff00000c79f0000 by task kunit_try_catch/245 [ 28.708540] [ 28.708677] CPU: 0 UID: 0 PID: 245 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250625 #1 PREEMPT [ 28.708764] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.708792] Hardware name: linux,dummy-virt (DT) [ 28.708825] Call trace: [ 28.708851] show_stack+0x20/0x38 (C) [ 28.708902] dump_stack_lvl+0x8c/0xd0 [ 28.708990] print_report+0x118/0x608 [ 28.709120] kasan_report+0xdc/0x128 [ 28.709170] __asan_report_load1_noabort+0x20/0x30 [ 28.709217] mempool_uaf_helper+0x314/0x340 [ 28.709265] mempool_page_alloc_uaf+0xc0/0x118 [ 28.709634] kunit_try_run_case+0x170/0x3f0 [ 28.709872] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 28.709983] kthread+0x328/0x630 [ 28.710045] ret_from_fork+0x10/0x20 [ 28.710093] [ 28.710117] The buggy address belongs to the physical page: [ 28.710151] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1079f0 [ 28.710215] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 28.710340] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000 [ 28.710726] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 28.710966] page dumped because: kasan: bad access detected [ 28.710999] [ 28.711019] Memory state around the buggy address: [ 28.711201] fff00000c79eff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 28.711248] fff00000c79eff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 28.711290] >fff00000c79f0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 28.711327] ^ [ 28.711354] fff00000c79f0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 28.711406] fff00000c79f0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 28.711444] ================================================================== [ 28.667507] ================================================================== [ 28.667569] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340 [ 28.667708] Read of size 1 at addr fff00000c79f0000 by task kunit_try_catch/241 [ 28.667898] [ 28.668062] CPU: 0 UID: 0 PID: 241 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250625 #1 PREEMPT [ 28.668332] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.668359] Hardware name: linux,dummy-virt (DT) [ 28.668418] Call trace: [ 28.668441] show_stack+0x20/0x38 (C) [ 28.668490] dump_stack_lvl+0x8c/0xd0 [ 28.668537] print_report+0x118/0x608 [ 28.668583] kasan_report+0xdc/0x128 [ 28.668627] __asan_report_load1_noabort+0x20/0x30 [ 28.668674] mempool_uaf_helper+0x314/0x340 [ 28.668720] mempool_kmalloc_large_uaf+0xc4/0x120 [ 28.668768] kunit_try_run_case+0x170/0x3f0 [ 28.668817] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 28.668923] kthread+0x328/0x630 [ 28.669155] ret_from_fork+0x10/0x20 [ 28.669388] [ 28.669423] The buggy address belongs to the physical page: [ 28.669494] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1079f0 [ 28.669621] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 28.669754] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 28.669847] page_type: f8(unknown) [ 28.669886] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 28.669940] raw: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 28.670068] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 28.670266] head: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 28.670429] head: 0bfffe0000000002 ffffc1ffc31e7c01 00000000ffffffff 00000000ffffffff [ 28.670476] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 28.670517] page dumped because: kasan: bad access detected [ 28.670549] [ 28.670566] Memory state around the buggy address: [ 28.670600] fff00000c79eff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 28.670642] fff00000c79eff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 28.670684] >fff00000c79f0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 28.670721] ^ [ 28.670750] fff00000c79f0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 28.670791] fff00000c79f0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 28.670829] ==================================================================
[ 23.398459] ================================================================== [ 23.399418] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 23.400565] Read of size 1 at addr ffff888103964000 by task kunit_try_catch/258 [ 23.401295] [ 23.401580] CPU: 1 UID: 0 PID: 258 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250625 #1 PREEMPT(voluntary) [ 23.401635] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.401649] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 23.401671] Call Trace: [ 23.401686] <TASK> [ 23.401704] dump_stack_lvl+0x73/0xb0 [ 23.401735] print_report+0xd1/0x650 [ 23.401755] ? __virt_addr_valid+0x1db/0x2d0 [ 23.401778] ? mempool_uaf_helper+0x392/0x400 [ 23.401798] ? kasan_addr_to_slab+0x11/0xa0 [ 23.401910] ? mempool_uaf_helper+0x392/0x400 [ 23.401956] kasan_report+0x141/0x180 [ 23.401978] ? mempool_uaf_helper+0x392/0x400 [ 23.402003] __asan_report_load1_noabort+0x18/0x20 [ 23.402026] mempool_uaf_helper+0x392/0x400 [ 23.402048] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 23.402104] ? __kasan_check_write+0x18/0x20 [ 23.402127] ? __pfx_sched_clock_cpu+0x10/0x10 [ 23.402150] ? finish_task_switch.isra.0+0x153/0x700 [ 23.402175] mempool_kmalloc_large_uaf+0xef/0x140 [ 23.402196] ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10 [ 23.402220] ? __pfx_mempool_kmalloc+0x10/0x10 [ 23.402243] ? __pfx_mempool_kfree+0x10/0x10 [ 23.402266] ? __pfx_read_tsc+0x10/0x10 [ 23.402288] ? ktime_get_ts64+0x86/0x230 [ 23.402312] kunit_try_run_case+0x1a5/0x480 [ 23.402336] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.402358] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 23.402379] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 23.402404] ? __kthread_parkme+0x82/0x180 [ 23.402423] ? preempt_count_sub+0x50/0x80 [ 23.402444] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.402468] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.402489] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 23.402512] kthread+0x337/0x6f0 [ 23.402529] ? trace_preempt_on+0x20/0xc0 [ 23.402552] ? __pfx_kthread+0x10/0x10 [ 23.402571] ? _raw_spin_unlock_irq+0x47/0x80 [ 23.402592] ? calculate_sigpending+0x7b/0xa0 [ 23.402615] ? __pfx_kthread+0x10/0x10 [ 23.402637] ret_from_fork+0x116/0x1d0 [ 23.402655] ? __pfx_kthread+0x10/0x10 [ 23.402674] ret_from_fork_asm+0x1a/0x30 [ 23.402704] </TASK> [ 23.402715] [ 23.417975] The buggy address belongs to the physical page: [ 23.418162] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103964 [ 23.418402] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 23.418627] flags: 0x200000000000040(head|node=0|zone=2) [ 23.418798] page_type: f8(unknown) [ 23.418924] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 23.419184] raw: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 23.419661] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 23.420095] head: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 [ 23.420494] head: 0200000000000002 ffffea00040e5901 00000000ffffffff 00000000ffffffff [ 23.420789] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 [ 23.421246] page dumped because: kasan: bad access detected [ 23.421480] [ 23.421567] Memory state around the buggy address: [ 23.421767] ffff888103963f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.421996] ffff888103963f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.422285] >ffff888103964000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.422648] ^ [ 23.422763] ffff888103964080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.423343] ffff888103964100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.423635] ================================================================== [ 23.458627] ================================================================== [ 23.460176] BUG: KASAN: use-after-free in mempool_uaf_helper+0x392/0x400 [ 23.460990] Read of size 1 at addr ffff888102bec000 by task kunit_try_catch/262 [ 23.461275] [ 23.461387] CPU: 0 UID: 0 PID: 262 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250625 #1 PREEMPT(voluntary) [ 23.461450] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.461464] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 23.461486] Call Trace: [ 23.461501] <TASK> [ 23.461519] dump_stack_lvl+0x73/0xb0 [ 23.461547] print_report+0xd1/0x650 [ 23.461567] ? __virt_addr_valid+0x1db/0x2d0 [ 23.461593] ? mempool_uaf_helper+0x392/0x400 [ 23.461613] ? kasan_addr_to_slab+0x11/0xa0 [ 23.461633] ? mempool_uaf_helper+0x392/0x400 [ 23.461654] kasan_report+0x141/0x180 [ 23.461674] ? mempool_uaf_helper+0x392/0x400 [ 23.461699] __asan_report_load1_noabort+0x18/0x20 [ 23.461722] mempool_uaf_helper+0x392/0x400 [ 23.461743] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 23.461767] ? __kasan_check_write+0x18/0x20 [ 23.461789] ? __pfx_sched_clock_cpu+0x10/0x10 [ 23.461812] ? finish_task_switch.isra.0+0x153/0x700 [ 23.461838] mempool_page_alloc_uaf+0xed/0x140 [ 23.461860] ? __pfx_mempool_page_alloc_uaf+0x10/0x10 [ 23.461885] ? __pfx_mempool_alloc_pages+0x10/0x10 [ 23.461909] ? __pfx_mempool_free_pages+0x10/0x10 [ 23.461933] ? __pfx_read_tsc+0x10/0x10 [ 23.462012] ? ktime_get_ts64+0x86/0x230 [ 23.462042] kunit_try_run_case+0x1a5/0x480 [ 23.462069] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.462091] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 23.462112] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 23.462144] ? __kthread_parkme+0x82/0x180 [ 23.462163] ? preempt_count_sub+0x50/0x80 [ 23.462184] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.462209] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.462232] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 23.462254] kthread+0x337/0x6f0 [ 23.462273] ? trace_preempt_on+0x20/0xc0 [ 23.462296] ? __pfx_kthread+0x10/0x10 [ 23.462315] ? _raw_spin_unlock_irq+0x47/0x80 [ 23.462337] ? calculate_sigpending+0x7b/0xa0 [ 23.462360] ? __pfx_kthread+0x10/0x10 [ 23.462381] ret_from_fork+0x116/0x1d0 [ 23.462400] ? __pfx_kthread+0x10/0x10 [ 23.462420] ret_from_fork_asm+0x1a/0x30 [ 23.462450] </TASK> [ 23.462461] [ 23.476100] The buggy address belongs to the physical page: [ 23.476383] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102bec [ 23.476997] flags: 0x200000000000000(node=0|zone=2) [ 23.477287] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 [ 23.477955] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 23.478253] page dumped because: kasan: bad access detected [ 23.478727] [ 23.478907] Memory state around the buggy address: [ 23.479487] ffff888102bebf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.479750] ffff888102bebf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.480088] >ffff888102bec000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.480715] ^ [ 23.481060] ffff888102bec080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.481692] ffff888102bec100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.482324] ==================================================================