Date
July 11, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.445567] ================================================================== [ 16.445622] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350 [ 16.445887] Read of size 1 at addr fff00000c7800000 by task kunit_try_catch/155 [ 16.445961] [ 16.445997] CPU: 0 UID: 0 PID: 155 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.446089] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.446116] Hardware name: linux,dummy-virt (DT) [ 16.446155] Call trace: [ 16.446185] show_stack+0x20/0x38 (C) [ 16.446235] dump_stack_lvl+0x8c/0xd0 [ 16.446280] print_report+0x118/0x608 [ 16.446325] kasan_report+0xdc/0x128 [ 16.446378] __asan_report_load1_noabort+0x20/0x30 [ 16.446428] page_alloc_uaf+0x328/0x350 [ 16.446472] kunit_try_run_case+0x170/0x3f0 [ 16.446525] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.446586] kthread+0x328/0x630 [ 16.446629] ret_from_fork+0x10/0x20 [ 16.446676] [ 16.446705] The buggy address belongs to the physical page: [ 16.446734] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107800 [ 16.446785] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.446977] page_type: f0(buddy) [ 16.447021] raw: 0bfffe0000000000 fff00000ff616310 fff00000ff616310 0000000000000000 [ 16.447070] raw: 0000000000000000 000000000000000a 00000000f0000000 0000000000000000 [ 16.447108] page dumped because: kasan: bad access detected [ 16.447137] [ 16.447154] Memory state around the buggy address: [ 16.447186] fff00000c77fff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.447582] fff00000c77fff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.447783] >fff00000c7800000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.448047] ^ [ 16.448288] fff00000c7800080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.448455] fff00000c7800100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.448583] ==================================================================
[ 11.964422] ================================================================== [ 11.965043] BUG: KASAN: use-after-free in page_alloc_uaf+0x356/0x3d0 [ 11.965355] Read of size 1 at addr ffff888103980000 by task kunit_try_catch/171 [ 11.965646] [ 11.965758] CPU: 1 UID: 0 PID: 171 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 11.965799] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.965810] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.965829] Call Trace: [ 11.965841] <TASK> [ 11.965854] dump_stack_lvl+0x73/0xb0 [ 11.965882] print_report+0xd1/0x650 [ 11.965903] ? __virt_addr_valid+0x1db/0x2d0 [ 11.965937] ? page_alloc_uaf+0x356/0x3d0 [ 11.965958] ? kasan_addr_to_slab+0x11/0xa0 [ 11.965978] ? page_alloc_uaf+0x356/0x3d0 [ 11.965999] kasan_report+0x141/0x180 [ 11.966074] ? page_alloc_uaf+0x356/0x3d0 [ 11.966102] __asan_report_load1_noabort+0x18/0x20 [ 11.966127] page_alloc_uaf+0x356/0x3d0 [ 11.966148] ? __pfx_page_alloc_uaf+0x10/0x10 [ 11.966170] ? __schedule+0x10cc/0x2b60 [ 11.966192] ? __pfx_read_tsc+0x10/0x10 [ 11.966213] ? ktime_get_ts64+0x86/0x230 [ 11.966237] kunit_try_run_case+0x1a5/0x480 [ 11.966261] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.966283] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.966307] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.966331] ? __kthread_parkme+0x82/0x180 [ 11.966351] ? preempt_count_sub+0x50/0x80 [ 11.966374] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.966398] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.966422] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.966446] kthread+0x337/0x6f0 [ 11.966464] ? trace_preempt_on+0x20/0xc0 [ 11.966488] ? __pfx_kthread+0x10/0x10 [ 11.966513] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.966534] ? calculate_sigpending+0x7b/0xa0 [ 11.966558] ? __pfx_kthread+0x10/0x10 [ 11.966579] ret_from_fork+0x116/0x1d0 [ 11.966596] ? __pfx_kthread+0x10/0x10 [ 11.966616] ret_from_fork_asm+0x1a/0x30 [ 11.966648] </TASK> [ 11.966657] [ 11.976228] The buggy address belongs to the physical page: [ 11.976679] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103980 [ 11.977409] flags: 0x200000000000000(node=0|zone=2) [ 11.977976] page_type: f0(buddy) [ 11.978329] raw: 0200000000000000 ffff88817fffb538 ffff88817fffb538 0000000000000000 [ 11.978568] raw: 0000000000000000 0000000000000007 00000000f0000000 0000000000000000 [ 11.978968] page dumped because: kasan: bad access detected [ 11.979509] [ 11.979727] Memory state around the buggy address: [ 11.980227] ffff88810397ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.980944] ffff88810397ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.981391] >ffff888103980000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.981607] ^ [ 11.981725] ffff888103980080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.982411] ffff888103980100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.983138] ==================================================================