Date
May 29, 2025, 7:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 24.679852] ================================================================== [ 24.680075] BUG: KASAN: slab-use-after-free in kasan_strings+0x95c/0xb00 [ 24.680272] Read of size 1 at addr fff00000c7876250 by task kunit_try_catch/259 [ 24.680444] [ 24.680532] CPU: 1 UID: 0 PID: 259 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT [ 24.680785] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.680858] Hardware name: linux,dummy-virt (DT) [ 24.680947] Call trace: [ 24.681010] show_stack+0x20/0x38 (C) [ 24.681234] dump_stack_lvl+0x8c/0xd0 [ 24.681419] print_report+0x118/0x608 [ 24.681565] kasan_report+0xdc/0x128 [ 24.681673] __asan_report_load1_noabort+0x20/0x30 [ 24.681811] kasan_strings+0x95c/0xb00 [ 24.681964] kunit_try_run_case+0x170/0x3f0 [ 24.682088] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.682263] kthread+0x328/0x630 [ 24.682515] ret_from_fork+0x10/0x20 [ 24.682653] [ 24.682684] Allocated by task 259: [ 24.682757] kasan_save_stack+0x3c/0x68 [ 24.682863] kasan_save_track+0x20/0x40 [ 24.682948] kasan_save_alloc_info+0x40/0x58 [ 24.683237] __kasan_kmalloc+0xd4/0xd8 [ 24.683347] __kmalloc_cache_noprof+0x15c/0x3c0 [ 24.683712] kasan_strings+0xc8/0xb00 [ 24.684013] kunit_try_run_case+0x170/0x3f0 [ 24.684132] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.684254] kthread+0x328/0x630 [ 24.684341] ret_from_fork+0x10/0x20 [ 24.684637] [ 24.684722] Freed by task 259: [ 24.685032] kasan_save_stack+0x3c/0x68 [ 24.685163] kasan_save_track+0x20/0x40 [ 24.685264] kasan_save_free_info+0x4c/0x78 [ 24.685554] __kasan_slab_free+0x6c/0x98 [ 24.685688] kfree+0x214/0x3c8 [ 24.685782] kasan_strings+0x24c/0xb00 [ 24.685889] kunit_try_run_case+0x170/0x3f0 [ 24.685999] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.686111] kthread+0x328/0x630 [ 24.686199] ret_from_fork+0x10/0x20 [ 24.686300] [ 24.686950] The buggy address belongs to the object at fff00000c7876240 [ 24.686950] which belongs to the cache kmalloc-32 of size 32 [ 24.687114] The buggy address is located 16 bytes inside of [ 24.687114] freed 32-byte region [fff00000c7876240, fff00000c7876260) [ 24.687254] [ 24.687314] The buggy address belongs to the physical page: [ 24.688052] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107876 [ 24.688466] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 24.688794] page_type: f5(slab) [ 24.688902] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 24.689733] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 24.689911] page dumped because: kasan: bad access detected [ 24.690151] [ 24.690412] Memory state around the buggy address: [ 24.690559] fff00000c7876100: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 24.690963] fff00000c7876180: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 24.691081] >fff00000c7876200: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 24.691174] ^ [ 24.691479] fff00000c7876280: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 24.691818] fff00000c7876300: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 24.692047] ==================================================================
[ 12.806563] ================================================================== [ 12.807184] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80 [ 12.807548] Read of size 1 at addr ffff888102fab010 by task kunit_try_catch/276 [ 12.808012] [ 12.808148] CPU: 0 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT(voluntary) [ 12.808228] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.808241] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.808262] Call Trace: [ 12.808276] <TASK> [ 12.808290] dump_stack_lvl+0x73/0xb0 [ 12.808317] print_report+0xd1/0x650 [ 12.808339] ? __virt_addr_valid+0x1db/0x2d0 [ 12.808362] ? kasan_strings+0xcbc/0xe80 [ 12.808415] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.808439] ? kasan_strings+0xcbc/0xe80 [ 12.808462] kasan_report+0x141/0x180 [ 12.808484] ? kasan_strings+0xcbc/0xe80 [ 12.808510] __asan_report_load1_noabort+0x18/0x20 [ 12.808561] kasan_strings+0xcbc/0xe80 [ 12.808581] ? trace_hardirqs_on+0x37/0xe0 [ 12.808603] ? __pfx_kasan_strings+0x10/0x10 [ 12.808636] ? finish_task_switch.isra.0+0x153/0x700 [ 12.808659] ? __switch_to+0x47/0xf50 [ 12.808714] ? __schedule+0x10cc/0x2b60 [ 12.808740] ? __pfx_read_tsc+0x10/0x10 [ 12.808761] ? ktime_get_ts64+0x86/0x230 [ 12.808807] kunit_try_run_case+0x1a5/0x480 [ 12.808830] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.808924] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.808950] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.808975] ? __kthread_parkme+0x82/0x180 [ 12.808995] ? preempt_count_sub+0x50/0x80 [ 12.809019] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.809041] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.809065] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.809121] kthread+0x337/0x6f0 [ 12.809164] ? trace_preempt_on+0x20/0xc0 [ 12.809187] ? __pfx_kthread+0x10/0x10 [ 12.809210] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.809233] ? calculate_sigpending+0x7b/0xa0 [ 12.809258] ? __pfx_kthread+0x10/0x10 [ 12.809280] ret_from_fork+0x116/0x1d0 [ 12.809299] ? __pfx_kthread+0x10/0x10 [ 12.809320] ret_from_fork_asm+0x1a/0x30 [ 12.809350] </TASK> [ 12.809360] [ 12.818382] Allocated by task 276: [ 12.818521] kasan_save_stack+0x45/0x70 [ 12.818691] kasan_save_track+0x18/0x40 [ 12.818873] kasan_save_alloc_info+0x3b/0x50 [ 12.819083] __kasan_kmalloc+0xb7/0xc0 [ 12.819412] __kmalloc_cache_noprof+0x189/0x420 [ 12.819816] kasan_strings+0xc0/0xe80 [ 12.820047] kunit_try_run_case+0x1a5/0x480 [ 12.820285] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.820544] kthread+0x337/0x6f0 [ 12.820726] ret_from_fork+0x116/0x1d0 [ 12.820966] ret_from_fork_asm+0x1a/0x30 [ 12.821109] [ 12.821209] Freed by task 276: [ 12.821370] kasan_save_stack+0x45/0x70 [ 12.821568] kasan_save_track+0x18/0x40 [ 12.821938] kasan_save_free_info+0x3f/0x60 [ 12.822311] __kasan_slab_free+0x56/0x70 [ 12.822541] kfree+0x222/0x3f0 [ 12.822739] kasan_strings+0x2aa/0xe80 [ 12.823011] kunit_try_run_case+0x1a5/0x480 [ 12.823198] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.823403] kthread+0x337/0x6f0 [ 12.823571] ret_from_fork+0x116/0x1d0 [ 12.823838] ret_from_fork_asm+0x1a/0x30 [ 12.824046] [ 12.824142] The buggy address belongs to the object at ffff888102fab000 [ 12.824142] which belongs to the cache kmalloc-32 of size 32 [ 12.824650] The buggy address is located 16 bytes inside of [ 12.824650] freed 32-byte region [ffff888102fab000, ffff888102fab020) [ 12.825136] [ 12.825234] The buggy address belongs to the physical page: [ 12.825618] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102fab [ 12.826258] flags: 0x200000000000000(node=0|zone=2) [ 12.826490] page_type: f5(slab) [ 12.826690] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 12.827280] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 12.827659] page dumped because: kasan: bad access detected [ 12.827960] [ 12.828100] Memory state around the buggy address: [ 12.828332] ffff888102faaf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.828575] ffff888102faaf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.829054] >ffff888102fab000: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 12.829437] ^ [ 12.829681] ffff888102fab080: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 12.830209] ffff888102fab100: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 12.830485] ==================================================================