Date
July 17, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.150997] ================================================================== [ 15.151106] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350 [ 15.151215] Read of size 1 at addr fff00000c78c0000 by task kunit_try_catch/155 [ 15.151279] [ 15.151314] CPU: 0 UID: 0 PID: 155 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.151395] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.151657] Hardware name: linux,dummy-virt (DT) [ 15.151828] Call trace: [ 15.151889] show_stack+0x20/0x38 (C) [ 15.152102] dump_stack_lvl+0x8c/0xd0 [ 15.152176] print_report+0x118/0x5d0 [ 15.152230] kasan_report+0xdc/0x128 [ 15.152275] __asan_report_load1_noabort+0x20/0x30 [ 15.152500] page_alloc_uaf+0x328/0x350 [ 15.152563] kunit_try_run_case+0x170/0x3f0 [ 15.152626] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.152683] kthread+0x328/0x630 [ 15.152724] ret_from_fork+0x10/0x20 [ 15.152772] [ 15.152792] The buggy address belongs to the physical page: [ 15.152823] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078c0 [ 15.152875] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.152924] page_type: f0(buddy) [ 15.152962] raw: 0bfffe0000000000 fff00000ff616170 fff00000ff616170 0000000000000000 [ 15.153307] raw: 0000000000000000 0000000000000006 00000000f0000000 0000000000000000 [ 15.153623] page dumped because: kasan: bad access detected [ 15.153662] [ 15.153681] Memory state around the buggy address: [ 15.153713] fff00000c78bff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.154031] fff00000c78bff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.154157] >fff00000c78c0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.154270] ^ [ 15.154422] fff00000c78c0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.154546] fff00000c78c0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.154627] ==================================================================
[ 12.596951] ================================================================== [ 12.597695] BUG: KASAN: use-after-free in page_alloc_uaf+0x356/0x3d0 [ 12.597920] Read of size 1 at addr ffff888103910000 by task kunit_try_catch/171 [ 12.598142] [ 12.598229] CPU: 1 UID: 0 PID: 171 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.598320] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.598331] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.598350] Call Trace: [ 12.598362] <TASK> [ 12.598376] dump_stack_lvl+0x73/0xb0 [ 12.598404] print_report+0xd1/0x610 [ 12.598427] ? __virt_addr_valid+0x1db/0x2d0 [ 12.598450] ? page_alloc_uaf+0x356/0x3d0 [ 12.598471] ? kasan_addr_to_slab+0x11/0xa0 [ 12.598491] ? page_alloc_uaf+0x356/0x3d0 [ 12.598513] kasan_report+0x141/0x180 [ 12.598535] ? page_alloc_uaf+0x356/0x3d0 [ 12.598616] __asan_report_load1_noabort+0x18/0x20 [ 12.598641] page_alloc_uaf+0x356/0x3d0 [ 12.599026] ? __pfx_page_alloc_uaf+0x10/0x10 [ 12.599066] ? __schedule+0x10cc/0x2b60 [ 12.599093] ? __pfx_read_tsc+0x10/0x10 [ 12.599115] ? ktime_get_ts64+0x86/0x230 [ 12.599140] kunit_try_run_case+0x1a5/0x480 [ 12.599166] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.599189] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.599213] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.599342] ? __kthread_parkme+0x82/0x180 [ 12.599365] ? preempt_count_sub+0x50/0x80 [ 12.599389] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.599414] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.599438] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.599464] kthread+0x337/0x6f0 [ 12.599482] ? trace_preempt_on+0x20/0xc0 [ 12.599505] ? __pfx_kthread+0x10/0x10 [ 12.599525] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.599547] ? calculate_sigpending+0x7b/0xa0 [ 12.599583] ? __pfx_kthread+0x10/0x10 [ 12.599604] ret_from_fork+0x116/0x1d0 [ 12.599622] ? __pfx_kthread+0x10/0x10 [ 12.599642] ret_from_fork_asm+0x1a/0x30 [ 12.599674] </TASK> [ 12.599684] [ 12.613286] The buggy address belongs to the physical page: [ 12.613600] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103910 [ 12.614048] flags: 0x200000000000000(node=0|zone=2) [ 12.614231] page_type: f0(buddy) [ 12.614357] raw: 0200000000000000 ffff88817fffb460 ffff88817fffb460 0000000000000000 [ 12.614623] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000 [ 12.615148] page dumped because: kasan: bad access detected [ 12.615571] [ 12.615683] Memory state around the buggy address: [ 12.615937] ffff88810390ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.616311] ffff88810390ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.616715] >ffff888103910000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.617018] ^ [ 12.617135] ffff888103910080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.617359] ffff888103910100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.617721] ==================================================================