Date
July 3, 2025, 3:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.336502] ================================================================== [ 15.336572] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350 [ 15.336961] Read of size 1 at addr fff00000c7850000 by task kunit_try_catch/157 [ 15.337058] [ 15.337165] CPU: 1 UID: 0 PID: 157 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT [ 15.337289] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.337315] Hardware name: linux,dummy-virt (DT) [ 15.337778] Call trace: [ 15.337854] show_stack+0x20/0x38 (C) [ 15.338078] dump_stack_lvl+0x8c/0xd0 [ 15.338153] print_report+0x118/0x608 [ 15.338473] kasan_report+0xdc/0x128 [ 15.338602] __asan_report_load1_noabort+0x20/0x30 [ 15.338653] page_alloc_uaf+0x328/0x350 [ 15.338698] kunit_try_run_case+0x170/0x3f0 [ 15.339092] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.339287] kthread+0x328/0x630 [ 15.339508] ret_from_fork+0x10/0x20 [ 15.339699] [ 15.339722] The buggy address belongs to the physical page: [ 15.339963] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107850 [ 15.340189] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.340422] page_type: f0(buddy) [ 15.340725] raw: 0bfffe0000000000 fff00000ff616020 fff00000ff616020 0000000000000000 [ 15.341133] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000 [ 15.341329] page dumped because: kasan: bad access detected [ 15.341585] [ 15.341624] Memory state around the buggy address: [ 15.341814] fff00000c784ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.341893] fff00000c784ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.342102] >fff00000c7850000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.342258] ^ [ 15.342307] fff00000c7850080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.342436] fff00000c7850100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.342701] ==================================================================
[ 10.767099] ================================================================== [ 10.767986] BUG: KASAN: use-after-free in page_alloc_uaf+0x356/0x3d0 [ 10.768293] Read of size 1 at addr ffff888103980000 by task kunit_try_catch/173 [ 10.768687] [ 10.768792] CPU: 0 UID: 0 PID: 173 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT(voluntary) [ 10.768835] Tainted: [B]=BAD_PAGE, [N]=TEST [ 10.768847] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 10.768869] Call Trace: [ 10.768881] <TASK> [ 10.768896] dump_stack_lvl+0x73/0xb0 [ 10.768921] print_report+0xd1/0x650 [ 10.768957] ? __virt_addr_valid+0x1db/0x2d0 [ 10.768979] ? page_alloc_uaf+0x356/0x3d0 [ 10.768999] ? kasan_addr_to_slab+0x11/0xa0 [ 10.769037] ? page_alloc_uaf+0x356/0x3d0 [ 10.769059] kasan_report+0x141/0x180 [ 10.769083] ? page_alloc_uaf+0x356/0x3d0 [ 10.769118] __asan_report_load1_noabort+0x18/0x20 [ 10.769143] page_alloc_uaf+0x356/0x3d0 [ 10.769163] ? __pfx_page_alloc_uaf+0x10/0x10 [ 10.769195] ? __schedule+0x10cc/0x2b60 [ 10.769219] ? __pfx_read_tsc+0x10/0x10 [ 10.769250] ? ktime_get_ts64+0x86/0x230 [ 10.769340] kunit_try_run_case+0x1a5/0x480 [ 10.769371] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.769395] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 10.769419] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 10.769444] ? __kthread_parkme+0x82/0x180 [ 10.769466] ? preempt_count_sub+0x50/0x80 [ 10.769491] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.769515] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 10.769538] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 10.769567] kthread+0x337/0x6f0 [ 10.769585] ? trace_preempt_on+0x20/0xc0 [ 10.769608] ? __pfx_kthread+0x10/0x10 [ 10.769626] ? _raw_spin_unlock_irq+0x47/0x80 [ 10.769648] ? calculate_sigpending+0x7b/0xa0 [ 10.769670] ? __pfx_kthread+0x10/0x10 [ 10.769688] ret_from_fork+0x41/0x80 [ 10.769709] ? __pfx_kthread+0x10/0x10 [ 10.769727] ret_from_fork_asm+0x1a/0x30 [ 10.769759] </TASK> [ 10.769770] [ 10.778856] The buggy address belongs to the physical page: [ 10.779290] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103980 [ 10.779913] flags: 0x200000000000000(node=0|zone=2) [ 10.780231] page_type: f0(buddy) [ 10.780469] raw: 0200000000000000 ffff88817fffc4b8 ffff88817fffc4b8 0000000000000000 [ 10.780953] raw: 0000000000000000 0000000000000007 00000000f0000000 0000000000000000 [ 10.781393] page dumped because: kasan: bad access detected [ 10.781665] [ 10.781763] Memory state around the buggy address: [ 10.781963] ffff88810397ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.782634] ffff88810397ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.782919] >ffff888103980000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.783321] ^ [ 10.783691] ffff888103980080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.784297] ffff888103980100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.784990] ==================================================================