Date
May 15, 2025, 10:38 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.839457] ================================================================== [ 17.839518] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350 [ 17.839637] Read of size 1 at addr fff00000c77a0000 by task kunit_try_catch/154 [ 17.839689] [ 17.839751] CPU: 1 UID: 0 PID: 154 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250515 #1 PREEMPT [ 17.840090] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.840123] Hardware name: linux,dummy-virt (DT) [ 17.840370] Call trace: [ 17.840427] show_stack+0x20/0x38 (C) [ 17.840519] dump_stack_lvl+0x8c/0xd0 [ 17.840573] print_report+0x118/0x608 [ 17.840700] kasan_report+0xdc/0x128 [ 17.840792] __asan_report_load1_noabort+0x20/0x30 [ 17.840845] page_alloc_uaf+0x328/0x350 [ 17.840890] kunit_try_run_case+0x170/0x3f0 [ 17.840992] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.841047] kthread+0x328/0x630 [ 17.841092] ret_from_fork+0x10/0x20 [ 17.841206] [ 17.841273] The buggy address belongs to the physical page: [ 17.841512] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077a0 [ 17.841583] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.842042] page_type: f0(buddy) [ 17.842126] raw: 0bfffe0000000000 fff00000ff616108 fff00000ff616108 0000000000000000 [ 17.842318] raw: 0000000000000000 0000000000000005 00000000f0000000 0000000000000000 [ 17.842420] page dumped because: kasan: bad access detected [ 17.842490] [ 17.842509] Memory state around the buggy address: [ 17.842542] fff00000c779ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.842881] fff00000c779ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.842939] >fff00000c77a0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.843396] ^ [ 17.843435] fff00000c77a0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.843741] fff00000c77a0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.844056] ==================================================================
[ 13.529147] ================================================================== [ 13.529764] BUG: KASAN: use-after-free in page_alloc_uaf+0x356/0x3d0 [ 13.530119] Read of size 1 at addr ffff888103bc0000 by task kunit_try_catch/172 [ 13.530436] [ 13.530588] CPU: 0 UID: 0 PID: 172 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250515 #1 PREEMPT(voluntary) [ 13.530683] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.530709] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.530739] Call Trace: [ 13.530755] <TASK> [ 13.530776] dump_stack_lvl+0x73/0xb0 [ 13.530808] print_report+0xd1/0x650 [ 13.530832] ? __virt_addr_valid+0x1db/0x2d0 [ 13.530857] ? page_alloc_uaf+0x356/0x3d0 [ 13.530893] ? kasan_addr_to_slab+0x11/0xa0 [ 13.530974] ? page_alloc_uaf+0x356/0x3d0 [ 13.531023] kasan_report+0x141/0x180 [ 13.531068] ? page_alloc_uaf+0x356/0x3d0 [ 13.531122] __asan_report_load1_noabort+0x18/0x20 [ 13.531164] page_alloc_uaf+0x356/0x3d0 [ 13.531212] ? __pfx_page_alloc_uaf+0x10/0x10 [ 13.531269] ? __schedule+0x10cc/0x2b60 [ 13.531316] ? __pfx_read_tsc+0x10/0x10 [ 13.531357] ? ktime_get_ts64+0x86/0x230 [ 13.531407] kunit_try_run_case+0x1a5/0x480 [ 13.531458] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.531502] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.531547] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.531592] ? __kthread_parkme+0x82/0x180 [ 13.531631] ? preempt_count_sub+0x50/0x80 [ 13.531669] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.531702] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.531745] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.531778] kthread+0x337/0x6f0 [ 13.531807] ? trace_preempt_on+0x20/0xc0 [ 13.531845] ? __pfx_kthread+0x10/0x10 [ 13.531875] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.531906] ? calculate_sigpending+0x7b/0xa0 [ 13.531941] ? __pfx_kthread+0x10/0x10 [ 13.531977] ret_from_fork+0x116/0x1d0 [ 13.532009] ? __pfx_kthread+0x10/0x10 [ 13.532040] ret_from_fork_asm+0x1a/0x30 [ 13.532092] </TASK> [ 13.532110] [ 13.540946] The buggy address belongs to the physical page: [ 13.541313] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103bc0 [ 13.541686] flags: 0x200000000000000(node=0|zone=2) [ 13.541898] page_type: f0(buddy) [ 13.542061] raw: 0200000000000000 ffff88817fffb4f0 ffff88817fffb4f0 0000000000000000 [ 13.542980] raw: 0000000000000000 0000000000000006 00000000f0000000 0000000000000000 [ 13.543524] page dumped because: kasan: bad access detected [ 13.544038] [ 13.544208] Memory state around the buggy address: [ 13.544958] ffff888103bbff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.545502] ffff888103bbff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.545887] >ffff888103bc0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.546123] ^ [ 13.546752] ffff888103bc0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.547006] ffff888103bc0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.547510] ==================================================================