Date
July 19, 2025, 11:12 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.013677] ================================================================== [ 16.016674] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 16.017713] Free of addr fff00000c77ae000 by task kunit_try_catch/209 [ 16.017813] [ 16.018222] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.018373] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.018400] Hardware name: linux,dummy-virt (DT) [ 16.018963] Call trace: [ 16.019137] show_stack+0x20/0x38 (C) [ 16.019460] dump_stack_lvl+0x8c/0xd0 [ 16.019830] print_report+0x118/0x5d0 [ 16.020152] kasan_report_invalid_free+0xc0/0xe8 [ 16.020613] check_slab_allocation+0xd4/0x108 [ 16.020675] __kasan_slab_pre_free+0x2c/0x48 [ 16.020737] kmem_cache_free+0xf0/0x468 [ 16.020789] kmem_cache_double_free+0x190/0x3c8 [ 16.020837] kunit_try_run_case+0x170/0x3f0 [ 16.021542] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.021650] kthread+0x328/0x630 [ 16.022029] ret_from_fork+0x10/0x20 [ 16.022210] [ 16.022434] Allocated by task 209: [ 16.022626] kasan_save_stack+0x3c/0x68 [ 16.022893] kasan_save_track+0x20/0x40 [ 16.023116] kasan_save_alloc_info+0x40/0x58 [ 16.023463] __kasan_slab_alloc+0xa8/0xb0 [ 16.023825] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.023906] kmem_cache_double_free+0x12c/0x3c8 [ 16.024004] kunit_try_run_case+0x170/0x3f0 [ 16.024043] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.024715] kthread+0x328/0x630 [ 16.024756] ret_from_fork+0x10/0x20 [ 16.025125] [ 16.025149] Freed by task 209: [ 16.025188] kasan_save_stack+0x3c/0x68 [ 16.025550] kasan_save_track+0x20/0x40 [ 16.025605] kasan_save_free_info+0x4c/0x78 [ 16.025646] __kasan_slab_free+0x6c/0x98 [ 16.026014] kmem_cache_free+0x260/0x468 [ 16.026061] kmem_cache_double_free+0x140/0x3c8 [ 16.026529] kunit_try_run_case+0x170/0x3f0 [ 16.026667] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.026723] kthread+0x328/0x630 [ 16.027071] ret_from_fork+0x10/0x20 [ 16.027349] [ 16.027517] The buggy address belongs to the object at fff00000c77ae000 [ 16.027517] which belongs to the cache test_cache of size 200 [ 16.027636] The buggy address is located 0 bytes inside of [ 16.027636] 200-byte region [fff00000c77ae000, fff00000c77ae0c8) [ 16.027705] [ 16.028033] The buggy address belongs to the physical page: [ 16.028083] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077ae [ 16.028452] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.028509] page_type: f5(slab) [ 16.028554] raw: 0bfffe0000000000 fff00000c5b33640 dead000000000122 0000000000000000 [ 16.028606] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 16.028648] page dumped because: kasan: bad access detected [ 16.028681] [ 16.029325] Memory state around the buggy address: [ 16.029650] fff00000c77adf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 16.029888] fff00000c77adf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 16.030164] >fff00000c77ae000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.030609] ^ [ 16.030845] fff00000c77ae080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 16.030966] fff00000c77ae100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.031007] ==================================================================
[ 12.699610] ================================================================== [ 12.700998] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 12.702370] Free of addr ffff888102fd9000 by task kunit_try_catch/226 [ 12.702770] [ 12.702876] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.702920] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.702931] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.702953] Call Trace: [ 12.702965] <TASK> [ 12.702981] dump_stack_lvl+0x73/0xb0 [ 12.703023] print_report+0xd1/0x610 [ 12.703045] ? __virt_addr_valid+0x1db/0x2d0 [ 12.703067] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.703088] ? kmem_cache_double_free+0x1e5/0x480 [ 12.703112] kasan_report_invalid_free+0x10a/0x130 [ 12.703134] ? kmem_cache_double_free+0x1e5/0x480 [ 12.703159] ? kmem_cache_double_free+0x1e5/0x480 [ 12.703182] check_slab_allocation+0x101/0x130 [ 12.703202] __kasan_slab_pre_free+0x28/0x40 [ 12.703221] kmem_cache_free+0xed/0x420 [ 12.703240] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.703259] ? kmem_cache_double_free+0x1e5/0x480 [ 12.703285] kmem_cache_double_free+0x1e5/0x480 [ 12.703308] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.703330] ? finish_task_switch.isra.0+0x153/0x700 [ 12.703351] ? __switch_to+0x47/0xf50 [ 12.703446] ? __pfx_read_tsc+0x10/0x10 [ 12.703468] ? ktime_get_ts64+0x86/0x230 [ 12.703492] kunit_try_run_case+0x1a5/0x480 [ 12.703517] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.703538] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.703561] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.703583] ? __kthread_parkme+0x82/0x180 [ 12.703603] ? preempt_count_sub+0x50/0x80 [ 12.703624] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.703647] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.703669] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.703691] kthread+0x337/0x6f0 [ 12.703709] ? trace_preempt_on+0x20/0xc0 [ 12.703730] ? __pfx_kthread+0x10/0x10 [ 12.703750] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.703769] ? calculate_sigpending+0x7b/0xa0 [ 12.703793] ? __pfx_kthread+0x10/0x10 [ 12.703813] ret_from_fork+0x116/0x1d0 [ 12.703831] ? __pfx_kthread+0x10/0x10 [ 12.703850] ret_from_fork_asm+0x1a/0x30 [ 12.703880] </TASK> [ 12.703891] [ 12.713821] Allocated by task 226: [ 12.714024] kasan_save_stack+0x45/0x70 [ 12.714215] kasan_save_track+0x18/0x40 [ 12.714378] kasan_save_alloc_info+0x3b/0x50 [ 12.715132] __kasan_slab_alloc+0x91/0xa0 [ 12.715319] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.715714] kmem_cache_double_free+0x14f/0x480 [ 12.716114] kunit_try_run_case+0x1a5/0x480 [ 12.716305] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.716794] kthread+0x337/0x6f0 [ 12.717046] ret_from_fork+0x116/0x1d0 [ 12.717242] ret_from_fork_asm+0x1a/0x30 [ 12.717617] [ 12.717711] Freed by task 226: [ 12.718122] kasan_save_stack+0x45/0x70 [ 12.718538] kasan_save_track+0x18/0x40 [ 12.718734] kasan_save_free_info+0x3f/0x60 [ 12.718890] __kasan_slab_free+0x56/0x70 [ 12.719173] kmem_cache_free+0x249/0x420 [ 12.719376] kmem_cache_double_free+0x16a/0x480 [ 12.719822] kunit_try_run_case+0x1a5/0x480 [ 12.720040] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.720280] kthread+0x337/0x6f0 [ 12.720473] ret_from_fork+0x116/0x1d0 [ 12.720900] ret_from_fork_asm+0x1a/0x30 [ 12.721189] [ 12.721292] The buggy address belongs to the object at ffff888102fd9000 [ 12.721292] which belongs to the cache test_cache of size 200 [ 12.722099] The buggy address is located 0 bytes inside of [ 12.722099] 200-byte region [ffff888102fd9000, ffff888102fd90c8) [ 12.722712] [ 12.722799] The buggy address belongs to the physical page: [ 12.723033] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102fd9 [ 12.723381] flags: 0x200000000000000(node=0|zone=2) [ 12.723946] page_type: f5(slab) [ 12.724092] raw: 0200000000000000 ffff888101060dc0 dead000000000122 0000000000000000 [ 12.724903] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 12.725264] page dumped because: kasan: bad access detected [ 12.725854] [ 12.725954] Memory state around the buggy address: [ 12.726143] ffff888102fd8f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.726672] ffff888102fd8f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.726963] >ffff888102fd9000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.727278] ^ [ 12.727438] ffff888102fd9080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.727719] ffff888102fd9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.728028] ==================================================================