Date
July 19, 2025, 11:12 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.063556] ================================================================== [ 15.063611] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350 [ 15.063663] Read of size 1 at addr fff00000c7810000 by task kunit_try_catch/154 [ 15.063723] [ 15.063804] CPU: 1 UID: 0 PID: 154 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.063969] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.064060] Hardware name: linux,dummy-virt (DT) [ 15.064097] Call trace: [ 15.064291] show_stack+0x20/0x38 (C) [ 15.064406] dump_stack_lvl+0x8c/0xd0 [ 15.064500] print_report+0x118/0x5d0 [ 15.064555] kasan_report+0xdc/0x128 [ 15.064674] __asan_report_load1_noabort+0x20/0x30 [ 15.064733] page_alloc_uaf+0x328/0x350 [ 15.064778] kunit_try_run_case+0x170/0x3f0 [ 15.064954] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.065062] kthread+0x328/0x630 [ 15.065105] ret_from_fork+0x10/0x20 [ 15.065167] [ 15.065211] The buggy address belongs to the physical page: [ 15.065257] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107810 [ 15.065377] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.065470] page_type: f0(buddy) [ 15.065548] raw: 0bfffe0000000000 fff00000ff6160a0 fff00000ff6160a0 0000000000000000 [ 15.065701] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000 [ 15.065768] page dumped because: kasan: bad access detected [ 15.065843] [ 15.065861] Memory state around the buggy address: [ 15.065898] fff00000c780ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.065954] fff00000c780ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.065995] >fff00000c7810000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.066075] ^ [ 15.066176] fff00000c7810080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.066219] fff00000c7810100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.066255] ==================================================================
[ 11.579096] ================================================================== [ 11.579703] BUG: KASAN: use-after-free in page_alloc_uaf+0x356/0x3d0 [ 11.579981] Read of size 1 at addr ffff888103910000 by task kunit_try_catch/171 [ 11.580769] [ 11.581115] CPU: 0 UID: 0 PID: 171 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 11.581164] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.581177] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.581197] Call Trace: [ 11.581210] <TASK> [ 11.581224] dump_stack_lvl+0x73/0xb0 [ 11.581253] print_report+0xd1/0x610 [ 11.581276] ? __virt_addr_valid+0x1db/0x2d0 [ 11.581454] ? page_alloc_uaf+0x356/0x3d0 [ 11.581487] ? kasan_addr_to_slab+0x11/0xa0 [ 11.581509] ? page_alloc_uaf+0x356/0x3d0 [ 11.581530] kasan_report+0x141/0x180 [ 11.581551] ? page_alloc_uaf+0x356/0x3d0 [ 11.581577] __asan_report_load1_noabort+0x18/0x20 [ 11.581606] page_alloc_uaf+0x356/0x3d0 [ 11.581627] ? __pfx_page_alloc_uaf+0x10/0x10 [ 11.581649] ? __schedule+0x10cc/0x2b60 [ 11.581670] ? __pfx_read_tsc+0x10/0x10 [ 11.581691] ? ktime_get_ts64+0x86/0x230 [ 11.581714] kunit_try_run_case+0x1a5/0x480 [ 11.581737] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.581758] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.581779] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.581801] ? __kthread_parkme+0x82/0x180 [ 11.581820] ? preempt_count_sub+0x50/0x80 [ 11.581842] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.581866] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.581888] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.581910] kthread+0x337/0x6f0 [ 11.581928] ? trace_preempt_on+0x20/0xc0 [ 11.581950] ? __pfx_kthread+0x10/0x10 [ 11.581969] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.581989] ? calculate_sigpending+0x7b/0xa0 [ 11.582022] ? __pfx_kthread+0x10/0x10 [ 11.582042] ret_from_fork+0x116/0x1d0 [ 11.582060] ? __pfx_kthread+0x10/0x10 [ 11.582079] ret_from_fork_asm+0x1a/0x30 [ 11.582108] </TASK> [ 11.582118] [ 11.596411] The buggy address belongs to the physical page: [ 11.597073] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103910 [ 11.597773] flags: 0x200000000000000(node=0|zone=2) [ 11.598343] page_type: f0(buddy) [ 11.598781] raw: 0200000000000000 ffff88817fffc460 ffff88817fffc460 0000000000000000 [ 11.599351] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000 [ 11.600035] page dumped because: kasan: bad access detected [ 11.600435] [ 11.600719] Memory state around the buggy address: [ 11.601144] ffff88810390ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.601374] ffff88810390ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.602267] >ffff888103910000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.603080] ^ [ 11.603629] ffff888103910080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.604233] ffff888103910100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.604727] ==================================================================