Date
July 9, 2025, 12:11 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.829238] ================================================================== [ 19.829361] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 19.829645] Write of size 33 at addr fff00000c63a2480 by task kunit_try_catch/187 [ 19.829775] [ 19.829836] CPU: 1 UID: 0 PID: 187 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.829940] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.829980] Hardware name: linux,dummy-virt (DT) [ 19.830016] Call trace: [ 19.830081] show_stack+0x20/0x38 (C) [ 19.830156] dump_stack_lvl+0x8c/0xd0 [ 19.830215] print_report+0x118/0x608 [ 19.830317] kasan_report+0xdc/0x128 [ 19.830366] kasan_check_range+0x100/0x1a8 [ 19.830423] __asan_memset+0x34/0x78 [ 19.830477] kmalloc_uaf_memset+0x170/0x310 [ 19.830525] kunit_try_run_case+0x170/0x3f0 [ 19.830576] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.830630] kthread+0x328/0x630 [ 19.830682] ret_from_fork+0x10/0x20 [ 19.830733] [ 19.830753] Allocated by task 187: [ 19.830791] kasan_save_stack+0x3c/0x68 [ 19.830844] kasan_save_track+0x20/0x40 [ 19.830883] kasan_save_alloc_info+0x40/0x58 [ 19.830930] __kasan_kmalloc+0xd4/0xd8 [ 19.830966] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.831006] kmalloc_uaf_memset+0xb8/0x310 [ 19.831051] kunit_try_run_case+0x170/0x3f0 [ 19.831093] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.831138] kthread+0x328/0x630 [ 19.831173] ret_from_fork+0x10/0x20 [ 19.831209] [ 19.831235] Freed by task 187: [ 19.831263] kasan_save_stack+0x3c/0x68 [ 19.831307] kasan_save_track+0x20/0x40 [ 19.831345] kasan_save_free_info+0x4c/0x78 [ 19.831394] __kasan_slab_free+0x6c/0x98 [ 19.831441] kfree+0x214/0x3c8 [ 19.831475] kmalloc_uaf_memset+0x11c/0x310 [ 19.831511] kunit_try_run_case+0x170/0x3f0 [ 19.831559] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.831611] kthread+0x328/0x630 [ 19.831645] ret_from_fork+0x10/0x20 [ 19.831679] [ 19.831705] The buggy address belongs to the object at fff00000c63a2480 [ 19.831705] which belongs to the cache kmalloc-64 of size 64 [ 19.831772] The buggy address is located 0 bytes inside of [ 19.831772] freed 64-byte region [fff00000c63a2480, fff00000c63a24c0) [ 19.831835] [ 19.831854] The buggy address belongs to the physical page: [ 19.831888] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1063a2 [ 19.831947] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.831999] page_type: f5(slab) [ 19.832320] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 19.832390] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.832446] page dumped because: kasan: bad access detected [ 19.832480] [ 19.832498] Memory state around the buggy address: [ 19.832531] fff00000c63a2380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.832576] fff00000c63a2400: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.832711] >fff00000c63a2480: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.832789] ^ [ 19.832900] fff00000c63a2500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.832954] fff00000c63a2580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.833104] ==================================================================
[ 12.913225] ================================================================== [ 12.913685] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360 [ 12.914053] Write of size 33 at addr ffff888102aaa580 by task kunit_try_catch/203 [ 12.914626] [ 12.914763] CPU: 1 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.914814] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.914826] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.914848] Call Trace: [ 12.914862] <TASK> [ 12.914883] dump_stack_lvl+0x73/0xb0 [ 12.914920] print_report+0xd1/0x650 [ 12.914958] ? __virt_addr_valid+0x1db/0x2d0 [ 12.914983] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.915005] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.915028] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.915049] kasan_report+0x141/0x180 [ 12.915072] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.915098] kasan_check_range+0x10c/0x1c0 [ 12.915122] __asan_memset+0x27/0x50 [ 12.915141] kmalloc_uaf_memset+0x1a3/0x360 [ 12.915162] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 12.915184] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 12.915210] ? trace_hardirqs_on+0x37/0xe0 [ 12.915235] ? __pfx_read_tsc+0x10/0x10 [ 12.915257] ? ktime_get_ts64+0x86/0x230 [ 12.915283] kunit_try_run_case+0x1a5/0x480 [ 12.915311] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.915336] ? queued_spin_lock_slowpath+0x116/0xb40 [ 12.915576] ? __kthread_parkme+0x82/0x180 [ 12.915602] ? preempt_count_sub+0x50/0x80 [ 12.915628] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.915653] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.915677] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.915702] kthread+0x337/0x6f0 [ 12.915721] ? trace_preempt_on+0x20/0xc0 [ 12.915743] ? __pfx_kthread+0x10/0x10 [ 12.915764] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.915786] ? calculate_sigpending+0x7b/0xa0 [ 12.915811] ? __pfx_kthread+0x10/0x10 [ 12.915832] ret_from_fork+0x116/0x1d0 [ 12.915851] ? __pfx_kthread+0x10/0x10 [ 12.915872] ret_from_fork_asm+0x1a/0x30 [ 12.915903] </TASK> [ 12.915915] [ 12.925408] Allocated by task 203: [ 12.925554] kasan_save_stack+0x45/0x70 [ 12.925705] kasan_save_track+0x18/0x40 [ 12.927897] kasan_save_alloc_info+0x3b/0x50 [ 12.928486] __kasan_kmalloc+0xb7/0xc0 [ 12.928691] __kmalloc_cache_noprof+0x189/0x420 [ 12.928961] kmalloc_uaf_memset+0xa9/0x360 [ 12.929178] kunit_try_run_case+0x1a5/0x480 [ 12.929386] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.929639] kthread+0x337/0x6f0 [ 12.929809] ret_from_fork+0x116/0x1d0 [ 12.930549] ret_from_fork_asm+0x1a/0x30 [ 12.930841] [ 12.931743] Freed by task 203: [ 12.932600] kasan_save_stack+0x45/0x70 [ 12.933145] kasan_save_track+0x18/0x40 [ 12.933531] kasan_save_free_info+0x3f/0x60 [ 12.934234] __kasan_slab_free+0x56/0x70 [ 12.934751] kfree+0x222/0x3f0 [ 12.935589] kmalloc_uaf_memset+0x12b/0x360 [ 12.936237] kunit_try_run_case+0x1a5/0x480 [ 12.936468] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.936709] kthread+0x337/0x6f0 [ 12.936867] ret_from_fork+0x116/0x1d0 [ 12.937702] ret_from_fork_asm+0x1a/0x30 [ 12.938180] [ 12.938555] The buggy address belongs to the object at ffff888102aaa580 [ 12.938555] which belongs to the cache kmalloc-64 of size 64 [ 12.939483] The buggy address is located 0 bytes inside of [ 12.939483] freed 64-byte region [ffff888102aaa580, ffff888102aaa5c0) [ 12.940848] [ 12.941043] The buggy address belongs to the physical page: [ 12.941443] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102aaa [ 12.941786] flags: 0x200000000000000(node=0|zone=2) [ 12.942082] page_type: f5(slab) [ 12.942251] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.942569] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.942881] page dumped because: kasan: bad access detected [ 12.943992] [ 12.944079] Memory state around the buggy address: [ 12.944274] ffff888102aaa480: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.945079] ffff888102aaa500: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.945752] >ffff888102aaa580: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.946489] ^ [ 12.946662] ffff888102aaa600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.947391] ffff888102aaa680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.947606] ==================================================================