Date
July 20, 2025, 8:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.892453] ================================================================== [ 15.892543] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 15.892945] Free of addr fff00000c7700000 by task kunit_try_catch/210 [ 15.893016] [ 15.893143] CPU: 1 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.893329] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.893627] Hardware name: linux,dummy-virt (DT) [ 15.893675] Call trace: [ 15.893791] show_stack+0x20/0x38 (C) [ 15.894074] dump_stack_lvl+0x8c/0xd0 [ 15.894210] print_report+0x118/0x5d0 [ 15.894308] kasan_report_invalid_free+0xc0/0xe8 [ 15.894398] check_slab_allocation+0xd4/0x108 [ 15.894528] __kasan_slab_pre_free+0x2c/0x48 [ 15.894602] kmem_cache_free+0xf0/0x468 [ 15.894897] kmem_cache_double_free+0x190/0x3c8 [ 15.895008] kunit_try_run_case+0x170/0x3f0 [ 15.895145] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.895299] kthread+0x328/0x630 [ 15.895382] ret_from_fork+0x10/0x20 [ 15.895531] [ 15.895552] Allocated by task 210: [ 15.895606] kasan_save_stack+0x3c/0x68 [ 15.895949] kasan_save_track+0x20/0x40 [ 15.896024] kasan_save_alloc_info+0x40/0x58 [ 15.896170] __kasan_slab_alloc+0xa8/0xb0 [ 15.896268] kmem_cache_alloc_noprof+0x10c/0x398 [ 15.896407] kmem_cache_double_free+0x12c/0x3c8 [ 15.896448] kunit_try_run_case+0x170/0x3f0 [ 15.896786] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.896855] kthread+0x328/0x630 [ 15.896896] ret_from_fork+0x10/0x20 [ 15.897429] [ 15.897480] Freed by task 210: [ 15.897537] kasan_save_stack+0x3c/0x68 [ 15.897653] kasan_save_track+0x20/0x40 [ 15.897714] kasan_save_free_info+0x4c/0x78 [ 15.897870] __kasan_slab_free+0x6c/0x98 [ 15.897929] kmem_cache_free+0x260/0x468 [ 15.897991] kmem_cache_double_free+0x140/0x3c8 [ 15.898033] kunit_try_run_case+0x170/0x3f0 [ 15.898369] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.898537] kthread+0x328/0x630 [ 15.898609] ret_from_fork+0x10/0x20 [ 15.898748] [ 15.898827] The buggy address belongs to the object at fff00000c7700000 [ 15.898827] which belongs to the cache test_cache of size 200 [ 15.898968] The buggy address is located 0 bytes inside of [ 15.898968] 200-byte region [fff00000c7700000, fff00000c77000c8) [ 15.899028] [ 15.899053] The buggy address belongs to the physical page: [ 15.899282] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107700 [ 15.899380] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.899476] page_type: f5(slab) [ 15.899520] raw: 0bfffe0000000000 fff00000c5bc0500 dead000000000122 0000000000000000 [ 15.899572] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 15.899659] page dumped because: kasan: bad access detected [ 15.899694] [ 15.899728] Memory state around the buggy address: [ 15.899771] fff00000c76fff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.899824] fff00000c76fff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 15.899876] >fff00000c7700000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.899936] ^ [ 15.899974] fff00000c7700080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 15.900016] fff00000c7700100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.900064] ==================================================================
[ 13.631976] ================================================================== [ 13.632677] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.633026] Free of addr ffff88810325f000 by task kunit_try_catch/227 [ 13.633458] [ 13.633569] CPU: 0 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.633616] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.633628] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.633650] Call Trace: [ 13.633662] <TASK> [ 13.633679] dump_stack_lvl+0x73/0xb0 [ 13.633711] print_report+0xd1/0x610 [ 13.633734] ? __virt_addr_valid+0x1db/0x2d0 [ 13.633758] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.633779] ? kmem_cache_double_free+0x1e5/0x480 [ 13.633805] kasan_report_invalid_free+0x10a/0x130 [ 13.633854] ? kmem_cache_double_free+0x1e5/0x480 [ 13.633880] ? kmem_cache_double_free+0x1e5/0x480 [ 13.633946] check_slab_allocation+0x101/0x130 [ 13.633968] __kasan_slab_pre_free+0x28/0x40 [ 13.633989] kmem_cache_free+0xed/0x420 [ 13.634009] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.634030] ? kmem_cache_double_free+0x1e5/0x480 [ 13.634069] kmem_cache_double_free+0x1e5/0x480 [ 13.634094] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.634122] ? finish_task_switch.isra.0+0x153/0x700 [ 13.634145] ? __switch_to+0x47/0xf50 [ 13.634174] ? __pfx_read_tsc+0x10/0x10 [ 13.634195] ? ktime_get_ts64+0x86/0x230 [ 13.634219] kunit_try_run_case+0x1a5/0x480 [ 13.634244] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.634266] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.634291] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.634314] ? __kthread_parkme+0x82/0x180 [ 13.634355] ? preempt_count_sub+0x50/0x80 [ 13.634378] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.634403] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.634426] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.634476] kthread+0x337/0x6f0 [ 13.634497] ? trace_preempt_on+0x20/0xc0 [ 13.634521] ? __pfx_kthread+0x10/0x10 [ 13.634541] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.634564] ? calculate_sigpending+0x7b/0xa0 [ 13.634588] ? __pfx_kthread+0x10/0x10 [ 13.634609] ret_from_fork+0x116/0x1d0 [ 13.634627] ? __pfx_kthread+0x10/0x10 [ 13.634648] ret_from_fork_asm+0x1a/0x30 [ 13.634678] </TASK> [ 13.634688] [ 13.649149] Allocated by task 227: [ 13.649691] kasan_save_stack+0x45/0x70 [ 13.650338] kasan_save_track+0x18/0x40 [ 13.651022] kasan_save_alloc_info+0x3b/0x50 [ 13.651558] __kasan_slab_alloc+0x91/0xa0 [ 13.652173] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.652822] kmem_cache_double_free+0x14f/0x480 [ 13.653383] kunit_try_run_case+0x1a5/0x480 [ 13.653564] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.653751] kthread+0x337/0x6f0 [ 13.654576] ret_from_fork+0x116/0x1d0 [ 13.655194] ret_from_fork_asm+0x1a/0x30 [ 13.655794] [ 13.656150] Freed by task 227: [ 13.656699] kasan_save_stack+0x45/0x70 [ 13.657324] kasan_save_track+0x18/0x40 [ 13.657550] kasan_save_free_info+0x3f/0x60 [ 13.657773] __kasan_slab_free+0x56/0x70 [ 13.657968] kmem_cache_free+0x249/0x420 [ 13.658172] kmem_cache_double_free+0x16a/0x480 [ 13.658412] kunit_try_run_case+0x1a5/0x480 [ 13.658637] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.658884] kthread+0x337/0x6f0 [ 13.659054] ret_from_fork+0x116/0x1d0 [ 13.659243] ret_from_fork_asm+0x1a/0x30 [ 13.659458] [ 13.659667] The buggy address belongs to the object at ffff88810325f000 [ 13.659667] which belongs to the cache test_cache of size 200 [ 13.660183] The buggy address is located 0 bytes inside of [ 13.660183] 200-byte region [ffff88810325f000, ffff88810325f0c8) [ 13.660846] [ 13.661014] The buggy address belongs to the physical page: [ 13.661386] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10325f [ 13.661747] flags: 0x200000000000000(node=0|zone=2) [ 13.662145] page_type: f5(slab) [ 13.662303] raw: 0200000000000000 ffff888101c4edc0 dead000000000122 0000000000000000 [ 13.662700] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.663179] page dumped because: kasan: bad access detected [ 13.663486] [ 13.663622] Memory state around the buggy address: [ 13.663869] ffff88810325ef00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.664338] ffff88810325ef80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.664710] >ffff88810325f000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.665148] ^ [ 13.665366] ffff88810325f080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.665698] ffff88810325f100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.666149] ==================================================================