Date
July 18, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.022768] ================================================================== [ 16.022842] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 16.022916] Free of addr fff00000c5a4d000 by task kunit_try_catch/209 [ 16.022960] [ 16.023167] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.023835] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.024164] Hardware name: linux,dummy-virt (DT) [ 16.024205] Call trace: [ 16.024230] show_stack+0x20/0x38 (C) [ 16.024293] dump_stack_lvl+0x8c/0xd0 [ 16.024419] print_report+0x118/0x5d0 [ 16.024468] kasan_report_invalid_free+0xc0/0xe8 [ 16.024643] check_slab_allocation+0xd4/0x108 [ 16.024796] __kasan_slab_pre_free+0x2c/0x48 [ 16.024845] kmem_cache_free+0xf0/0x468 [ 16.024894] kmem_cache_double_free+0x190/0x3c8 [ 16.024949] kunit_try_run_case+0x170/0x3f0 [ 16.025000] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.025060] kthread+0x328/0x630 [ 16.025291] ret_from_fork+0x10/0x20 [ 16.025610] [ 16.025669] Allocated by task 209: [ 16.025991] kasan_save_stack+0x3c/0x68 [ 16.026042] kasan_save_track+0x20/0x40 [ 16.026080] kasan_save_alloc_info+0x40/0x58 [ 16.026121] __kasan_slab_alloc+0xa8/0xb0 [ 16.026157] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.026378] kmem_cache_double_free+0x12c/0x3c8 [ 16.026528] kunit_try_run_case+0x170/0x3f0 [ 16.026644] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.026691] kthread+0x328/0x630 [ 16.026765] ret_from_fork+0x10/0x20 [ 16.026802] [ 16.026821] Freed by task 209: [ 16.026848] kasan_save_stack+0x3c/0x68 [ 16.026954] kasan_save_track+0x20/0x40 [ 16.026992] kasan_save_free_info+0x4c/0x78 [ 16.027035] __kasan_slab_free+0x6c/0x98 [ 16.027071] kmem_cache_free+0x260/0x468 [ 16.027107] kmem_cache_double_free+0x140/0x3c8 [ 16.027146] kunit_try_run_case+0x170/0x3f0 [ 16.027193] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.027238] kthread+0x328/0x630 [ 16.027492] ret_from_fork+0x10/0x20 [ 16.027539] [ 16.027692] The buggy address belongs to the object at fff00000c5a4d000 [ 16.027692] which belongs to the cache test_cache of size 200 [ 16.027873] The buggy address is located 0 bytes inside of [ 16.027873] 200-byte region [fff00000c5a4d000, fff00000c5a4d0c8) [ 16.028378] [ 16.028579] The buggy address belongs to the physical page: [ 16.028641] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a4d [ 16.028751] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.028952] page_type: f5(slab) [ 16.029003] raw: 0bfffe0000000000 fff00000c3e97b40 dead000000000122 0000000000000000 [ 16.029114] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 16.029250] page dumped because: kasan: bad access detected [ 16.029305] [ 16.029323] Memory state around the buggy address: [ 16.029367] fff00000c5a4cf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 16.029410] fff00000c5a4cf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 16.029510] >fff00000c5a4d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.029787] ^ [ 16.029824] fff00000c5a4d080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 16.030121] fff00000c5a4d100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.030543] ==================================================================
[ 12.855687] ================================================================== [ 12.857556] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 12.858739] Free of addr ffff8881030f1000 by task kunit_try_catch/228 [ 12.859899] [ 12.860562] CPU: 1 UID: 0 PID: 228 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.860611] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.860622] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.860642] Call Trace: [ 12.860654] <TASK> [ 12.860668] dump_stack_lvl+0x73/0xb0 [ 12.860697] print_report+0xd1/0x610 [ 12.860720] ? __virt_addr_valid+0x1db/0x2d0 [ 12.860743] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.860765] ? kmem_cache_double_free+0x1e5/0x480 [ 12.860790] kasan_report_invalid_free+0x10a/0x130 [ 12.860814] ? kmem_cache_double_free+0x1e5/0x480 [ 12.860839] ? kmem_cache_double_free+0x1e5/0x480 [ 12.860863] check_slab_allocation+0x101/0x130 [ 12.860884] __kasan_slab_pre_free+0x28/0x40 [ 12.860904] kmem_cache_free+0xed/0x420 [ 12.860923] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.860949] ? kmem_cache_double_free+0x1e5/0x480 [ 12.860976] kmem_cache_double_free+0x1e5/0x480 [ 12.860999] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.861022] ? finish_task_switch.isra.0+0x153/0x700 [ 12.861044] ? __switch_to+0x47/0xf50 [ 12.861071] ? __pfx_read_tsc+0x10/0x10 [ 12.861091] ? ktime_get_ts64+0x86/0x230 [ 12.861114] kunit_try_run_case+0x1a5/0x480 [ 12.861139] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.861160] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.861184] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.861207] ? __kthread_parkme+0x82/0x180 [ 12.861226] ? preempt_count_sub+0x50/0x80 [ 12.861248] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.861270] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.861310] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.861333] kthread+0x337/0x6f0 [ 12.861351] ? trace_preempt_on+0x20/0xc0 [ 12.861373] ? __pfx_kthread+0x10/0x10 [ 12.861392] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.861412] ? calculate_sigpending+0x7b/0xa0 [ 12.861436] ? __pfx_kthread+0x10/0x10 [ 12.861456] ret_from_fork+0x116/0x1d0 [ 12.861473] ? __pfx_kthread+0x10/0x10 [ 12.861492] ret_from_fork_asm+0x1a/0x30 [ 12.861521] </TASK> [ 12.861531] [ 12.875998] Allocated by task 228: [ 12.876128] kasan_save_stack+0x45/0x70 [ 12.876273] kasan_save_track+0x18/0x40 [ 12.876439] kasan_save_alloc_info+0x3b/0x50 [ 12.876750] __kasan_slab_alloc+0x91/0xa0 [ 12.876943] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.877347] kmem_cache_double_free+0x14f/0x480 [ 12.877519] kunit_try_run_case+0x1a5/0x480 [ 12.877667] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.877938] kthread+0x337/0x6f0 [ 12.878114] ret_from_fork+0x116/0x1d0 [ 12.878246] ret_from_fork_asm+0x1a/0x30 [ 12.878527] [ 12.878629] Freed by task 228: [ 12.878806] kasan_save_stack+0x45/0x70 [ 12.879006] kasan_save_track+0x18/0x40 [ 12.879675] kasan_save_free_info+0x3f/0x60 [ 12.879890] __kasan_slab_free+0x56/0x70 [ 12.880506] kmem_cache_free+0x249/0x420 [ 12.880685] kmem_cache_double_free+0x16a/0x480 [ 12.880896] kunit_try_run_case+0x1a5/0x480 [ 12.881147] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.881821] kthread+0x337/0x6f0 [ 12.882303] ret_from_fork+0x116/0x1d0 [ 12.882801] ret_from_fork_asm+0x1a/0x30 [ 12.883250] [ 12.883541] The buggy address belongs to the object at ffff8881030f1000 [ 12.883541] which belongs to the cache test_cache of size 200 [ 12.884926] The buggy address is located 0 bytes inside of [ 12.884926] 200-byte region [ffff8881030f1000, ffff8881030f10c8) [ 12.885877] [ 12.885959] The buggy address belongs to the physical page: [ 12.886604] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1030f1 [ 12.887566] flags: 0x200000000000000(node=0|zone=2) [ 12.887747] page_type: f5(slab) [ 12.887871] raw: 0200000000000000 ffff8881010938c0 dead000000000122 0000000000000000 [ 12.888552] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 12.889355] page dumped because: kasan: bad access detected [ 12.890092] [ 12.890254] Memory state around the buggy address: [ 12.890885] ffff8881030f0f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.891596] ffff8881030f0f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.891836] >ffff8881030f1000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.892059] ^ [ 12.892176] ffff8881030f1080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.892457] ffff8881030f1100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.892771] ==================================================================