Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 22.097536] ================================================================== [ 22.097737] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350 [ 22.097900] Read of size 1 at addr fff00000c77b0000 by task kunit_try_catch/158 [ 22.098033] [ 22.098127] CPU: 1 UID: 0 PID: 158 Comm: kunit_try_catch Tainted: G B N 6.15.2-rc1 #1 PREEMPT [ 22.098338] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.098422] Hardware name: linux,dummy-virt (DT) [ 22.098508] Call trace: [ 22.098567] show_stack+0x20/0x38 (C) [ 22.098696] dump_stack_lvl+0x8c/0xd0 [ 22.098819] print_report+0x118/0x608 [ 22.098932] kasan_report+0xdc/0x128 [ 22.099043] __asan_report_load1_noabort+0x20/0x30 [ 22.099177] page_alloc_uaf+0x328/0x350 [ 22.099299] kunit_try_run_case+0x170/0x3f0 [ 22.099433] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.099553] kthread+0x328/0x630 [ 22.099657] ret_from_fork+0x10/0x20 [ 22.099801] [ 22.100389] The buggy address belongs to the physical page: [ 22.100489] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077b0 [ 22.100617] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 22.100721] page_type: f0(buddy) [ 22.100803] raw: 0bfffe0000000000 fff00000ff616020 fff00000ff616020 0000000000000000 [ 22.100913] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000 [ 22.101101] page dumped because: kasan: bad access detected [ 22.101237] [ 22.101455] Memory state around the buggy address: [ 22.101571] fff00000c77aff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.101760] fff00000c77aff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.101898] >fff00000c77b0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 22.102079] ^ [ 22.102499] fff00000c77b0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 22.102772] fff00000c77b0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 22.103006] ==================================================================
[ 13.068434] ================================================================== [ 13.069049] BUG: KASAN: use-after-free in page_alloc_uaf+0x356/0x3d0 [ 13.069890] Read of size 1 at addr ffff888103910000 by task kunit_try_catch/174 [ 13.070217] [ 13.070356] CPU: 1 UID: 0 PID: 174 Comm: kunit_try_catch Tainted: G B N 6.15.2-rc1 #1 PREEMPT(voluntary) [ 13.070446] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.070469] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.070505] Call Trace: [ 13.070533] <TASK> [ 13.070582] dump_stack_lvl+0x73/0xb0 [ 13.070643] print_report+0xd1/0x650 [ 13.070689] ? __virt_addr_valid+0x1db/0x2d0 [ 13.070734] ? page_alloc_uaf+0x356/0x3d0 [ 13.070768] ? kasan_addr_to_slab+0x11/0xa0 [ 13.070800] ? page_alloc_uaf+0x356/0x3d0 [ 13.071248] kasan_report+0x141/0x180 [ 13.071280] ? page_alloc_uaf+0x356/0x3d0 [ 13.071305] __asan_report_load1_noabort+0x18/0x20 [ 13.071326] page_alloc_uaf+0x356/0x3d0 [ 13.071345] ? __pfx_page_alloc_uaf+0x10/0x10 [ 13.071364] ? __schedule+0x10cc/0x2b30 [ 13.071386] ? __pfx_read_tsc+0x10/0x10 [ 13.071405] ? ktime_get_ts64+0x86/0x230 [ 13.071432] kunit_try_run_case+0x1a5/0x480 [ 13.071456] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.071476] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.071498] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.071519] ? __kthread_parkme+0x82/0x180 [ 13.071540] ? preempt_count_sub+0x50/0x80 [ 13.071589] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.071623] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.071662] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.071694] kthread+0x337/0x6f0 [ 13.071721] ? trace_preempt_on+0x20/0xc0 [ 13.071773] ? __pfx_kthread+0x10/0x10 [ 13.071797] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.071817] ? calculate_sigpending+0x7b/0xa0 [ 13.071837] ? __pfx_kthread+0x10/0x10 [ 13.071855] ret_from_fork+0x41/0x80 [ 13.071875] ? __pfx_kthread+0x10/0x10 [ 13.071891] ret_from_fork_asm+0x1a/0x30 [ 13.071919] </TASK> [ 13.071932] [ 13.083045] The buggy address belongs to the physical page: [ 13.083533] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103910 [ 13.084164] flags: 0x200000000000000(node=0|zone=2) [ 13.084441] page_type: f0(buddy) [ 13.084801] raw: 0200000000000000 ffff88817fffb3e0 ffff88817fffb3e0 0000000000000000 [ 13.086019] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000 [ 13.087026] page dumped because: kasan: bad access detected [ 13.087290] [ 13.087397] Memory state around the buggy address: [ 13.087730] ffff88810390ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.088571] ffff88810390ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.089738] >ffff888103910000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.090032] ^ [ 13.090496] ffff888103910080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.091281] ffff888103910100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.091908] ==================================================================