Date
June 2, 2025, 2:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.045299] ================================================================== [ 19.046037] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 19.046931] Write of size 33 at addr fff00000c65a7e80 by task kunit_try_catch/176 [ 19.047385] [ 19.047616] CPU: 1 UID: 0 PID: 176 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 19.047776] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.047810] Hardware name: linux,dummy-virt (DT) [ 19.047851] Call trace: [ 19.047878] show_stack+0x20/0x38 (C) [ 19.047947] dump_stack_lvl+0x8c/0xd0 [ 19.048004] print_report+0x118/0x608 [ 19.048057] kasan_report+0xdc/0x128 [ 19.048109] kasan_check_range+0x100/0x1a8 [ 19.048184] __asan_memset+0x34/0x78 [ 19.048316] kmalloc_uaf_memset+0x170/0x310 [ 19.048411] kunit_try_run_case+0x170/0x3f0 [ 19.048528] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.048637] kthread+0x318/0x620 [ 19.048769] ret_from_fork+0x10/0x20 [ 19.048888] [ 19.052975] Allocated by task 176: [ 19.054445] kasan_save_stack+0x3c/0x68 [ 19.055191] kasan_save_track+0x20/0x40 [ 19.055710] kasan_save_alloc_info+0x40/0x58 [ 19.055973] __kasan_kmalloc+0xd4/0xd8 [ 19.056220] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.056691] kmalloc_uaf_memset+0xb8/0x310 [ 19.057124] kunit_try_run_case+0x170/0x3f0 [ 19.057638] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.058226] kthread+0x318/0x620 [ 19.058677] ret_from_fork+0x10/0x20 [ 19.059082] [ 19.059516] Freed by task 176: [ 19.060046] kasan_save_stack+0x3c/0x68 [ 19.060612] kasan_save_track+0x20/0x40 [ 19.060852] kasan_save_free_info+0x4c/0x78 [ 19.061094] __kasan_slab_free+0x6c/0x98 [ 19.061346] kfree+0x214/0x3c8 [ 19.061722] kmalloc_uaf_memset+0x11c/0x310 [ 19.062282] kunit_try_run_case+0x170/0x3f0 [ 19.062967] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.063576] kthread+0x318/0x620 [ 19.063843] ret_from_fork+0x10/0x20 [ 19.064068] [ 19.064216] The buggy address belongs to the object at fff00000c65a7e80 [ 19.064216] which belongs to the cache kmalloc-64 of size 64 [ 19.064711] The buggy address is located 0 bytes inside of [ 19.064711] freed 64-byte region [fff00000c65a7e80, fff00000c65a7ec0) [ 19.066005] [ 19.066660] The buggy address belongs to the physical page: [ 19.067035] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1065a7 [ 19.067809] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.069052] page_type: f5(slab) [ 19.069674] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 19.070890] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.071523] page dumped because: kasan: bad access detected [ 19.071963] [ 19.072200] Memory state around the buggy address: [ 19.072617] fff00000c65a7d80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.073695] fff00000c65a7e00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.074388] >fff00000c65a7e80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.074773] ^ [ 19.074994] fff00000c65a7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.075341] fff00000c65a7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.075669] ==================================================================
[ 12.959533] ================================================================== [ 12.960582] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a4/0x360 [ 12.961062] Write of size 33 at addr ffff888102a29500 by task kunit_try_catch/194 [ 12.961290] [ 12.961376] CPU: 0 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 12.961418] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.961429] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.961451] Call Trace: [ 12.961463] <TASK> [ 12.961480] dump_stack_lvl+0x73/0xb0 [ 12.961510] print_report+0xd1/0x650 [ 12.961533] ? __virt_addr_valid+0x1db/0x2d0 [ 12.961791] ? kmalloc_uaf_memset+0x1a4/0x360 [ 12.961816] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.961844] ? kmalloc_uaf_memset+0x1a4/0x360 [ 12.961867] kasan_report+0x140/0x180 [ 12.962068] ? kmalloc_uaf_memset+0x1a4/0x360 [ 12.962106] kasan_check_range+0x10c/0x1c0 [ 12.962133] __asan_memset+0x27/0x50 [ 12.962159] kmalloc_uaf_memset+0x1a4/0x360 [ 12.962182] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 12.962206] ? __schedule+0xce8/0x2840 [ 12.962232] ? __pfx_read_tsc+0x10/0x10 [ 12.962256] ? ktime_get_ts64+0x86/0x230 [ 12.962285] kunit_try_run_case+0x1a6/0x480 [ 12.962311] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.962334] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 12.962360] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.962385] ? __kthread_parkme+0x82/0x160 [ 12.962410] ? preempt_count_sub+0x50/0x80 [ 12.962437] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.962462] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.962490] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.962518] kthread+0x324/0x6e0 [ 12.962541] ? trace_preempt_on+0x20/0xc0 [ 12.962592] ? __pfx_kthread+0x10/0x10 [ 12.962617] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.962641] ? calculate_sigpending+0x7b/0xa0 [ 12.962665] ? __pfx_kthread+0x10/0x10 [ 12.962690] ret_from_fork+0x41/0x80 [ 12.962711] ? __pfx_kthread+0x10/0x10 [ 12.962735] ret_from_fork_asm+0x1a/0x30 [ 12.962770] </TASK> [ 12.962781] [ 12.979264] Allocated by task 194: [ 12.979405] kasan_save_stack+0x45/0x70 [ 12.979565] kasan_save_track+0x18/0x40 [ 12.979705] kasan_save_alloc_info+0x3b/0x50 [ 12.979854] __kasan_kmalloc+0xb7/0xc0 [ 12.979987] __kmalloc_cache_noprof+0x18a/0x420 [ 12.980156] kmalloc_uaf_memset+0xaa/0x360 [ 12.980301] kunit_try_run_case+0x1a6/0x480 [ 12.980447] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.980624] kthread+0x324/0x6e0 [ 12.980748] ret_from_fork+0x41/0x80 [ 12.980877] ret_from_fork_asm+0x1a/0x30 [ 12.981062] [ 12.981221] Freed by task 194: [ 12.981494] kasan_save_stack+0x45/0x70 [ 12.981873] kasan_save_track+0x18/0x40 [ 12.982229] kasan_save_free_info+0x3f/0x60 [ 12.982635] __kasan_slab_free+0x56/0x70 [ 12.983012] kfree+0x224/0x3f0 [ 12.983336] kmalloc_uaf_memset+0x12c/0x360 [ 12.983776] kunit_try_run_case+0x1a6/0x480 [ 12.984336] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.984898] kthread+0x324/0x6e0 [ 12.985280] ret_from_fork+0x41/0x80 [ 12.985631] ret_from_fork_asm+0x1a/0x30 [ 12.986116] [ 12.986279] The buggy address belongs to the object at ffff888102a29500 [ 12.986279] which belongs to the cache kmalloc-64 of size 64 [ 12.987493] The buggy address is located 0 bytes inside of [ 12.987493] freed 64-byte region [ffff888102a29500, ffff888102a29540) [ 12.988652] [ 12.988817] The buggy address belongs to the physical page: [ 12.989307] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a29 [ 12.990068] flags: 0x200000000000000(node=0|zone=2) [ 12.990666] page_type: f5(slab) [ 12.990985] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.991738] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.992388] page dumped because: kasan: bad access detected [ 12.992920] [ 12.993111] Memory state around the buggy address: [ 12.993608] ffff888102a29400: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.994353] ffff888102a29480: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.995060] >ffff888102a29500: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.995603] ^ [ 12.995718] ffff888102a29580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.995934] ffff888102a29600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.996493] ==================================================================