Date
July 11, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.576694] ================================================================== [ 17.576772] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 17.577496] Free of addr fff00000c58da000 by task kunit_try_catch/210 [ 17.577611] [ 17.577656] CPU: 0 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 17.577752] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.577781] Hardware name: linux,dummy-virt (DT) [ 17.577815] Call trace: [ 17.577848] show_stack+0x20/0x38 (C) [ 17.577907] dump_stack_lvl+0x8c/0xd0 [ 17.578769] print_report+0x118/0x608 [ 17.579199] kasan_report_invalid_free+0xc0/0xe8 [ 17.579346] check_slab_allocation+0xd4/0x108 [ 17.579725] __kasan_slab_pre_free+0x2c/0x48 [ 17.579783] kmem_cache_free+0xf0/0x468 [ 17.579833] kmem_cache_double_free+0x190/0x3c8 [ 17.579896] kunit_try_run_case+0x170/0x3f0 [ 17.579945] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.580000] kthread+0x328/0x630 [ 17.581163] ret_from_fork+0x10/0x20 [ 17.581403] [ 17.581540] Allocated by task 210: [ 17.581723] kasan_save_stack+0x3c/0x68 [ 17.582056] kasan_save_track+0x20/0x40 [ 17.582273] kasan_save_alloc_info+0x40/0x58 [ 17.582334] __kasan_slab_alloc+0xa8/0xb0 [ 17.582678] kmem_cache_alloc_noprof+0x10c/0x398 [ 17.582771] kmem_cache_double_free+0x12c/0x3c8 [ 17.582857] kunit_try_run_case+0x170/0x3f0 [ 17.583052] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.583291] kthread+0x328/0x630 [ 17.583341] ret_from_fork+0x10/0x20 [ 17.583377] [ 17.583628] Freed by task 210: [ 17.583862] kasan_save_stack+0x3c/0x68 [ 17.583909] kasan_save_track+0x20/0x40 [ 17.583944] kasan_save_free_info+0x4c/0x78 [ 17.584410] __kasan_slab_free+0x6c/0x98 [ 17.584472] kmem_cache_free+0x260/0x468 [ 17.584522] kmem_cache_double_free+0x140/0x3c8 [ 17.584567] kunit_try_run_case+0x170/0x3f0 [ 17.584605] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.585358] kthread+0x328/0x630 [ 17.585662] ret_from_fork+0x10/0x20 [ 17.585792] [ 17.585811] The buggy address belongs to the object at fff00000c58da000 [ 17.585811] which belongs to the cache test_cache of size 200 [ 17.586303] The buggy address is located 0 bytes inside of [ 17.586303] 200-byte region [fff00000c58da000, fff00000c58da0c8) [ 17.586376] [ 17.587016] The buggy address belongs to the physical page: [ 17.587220] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1058da [ 17.587545] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.587606] page_type: f5(slab) [ 17.587657] raw: 0bfffe0000000000 fff00000ffe82f00 dead000000000122 0000000000000000 [ 17.587921] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 17.588343] page dumped because: kasan: bad access detected [ 17.588405] [ 17.588612] Memory state around the buggy address: [ 17.588655] fff00000c58d9f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.588701] fff00000c58d9f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.588744] >fff00000c58da000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.588784] ^ [ 17.589498] fff00000c58da080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 17.589550] fff00000c58da100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.589589] ==================================================================
[ 13.049896] ================================================================== [ 13.051001] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.051231] Free of addr ffff888102a0d000 by task kunit_try_catch/226 [ 13.051422] [ 13.051511] CPU: 1 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.051552] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.051563] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.051583] Call Trace: [ 13.051594] <TASK> [ 13.051611] dump_stack_lvl+0x73/0xb0 [ 13.051641] print_report+0xd1/0x650 [ 13.051663] ? __virt_addr_valid+0x1db/0x2d0 [ 13.051688] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.051711] ? kmem_cache_double_free+0x1e5/0x480 [ 13.051737] kasan_report_invalid_free+0x10a/0x130 [ 13.051967] ? kmem_cache_double_free+0x1e5/0x480 [ 13.052034] ? kmem_cache_double_free+0x1e5/0x480 [ 13.052059] check_slab_allocation+0x101/0x130 [ 13.052083] __kasan_slab_pre_free+0x28/0x40 [ 13.052104] kmem_cache_free+0xed/0x420 [ 13.052124] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.052145] ? kmem_cache_double_free+0x1e5/0x480 [ 13.052173] kmem_cache_double_free+0x1e5/0x480 [ 13.052197] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.052221] ? finish_task_switch.isra.0+0x153/0x700 [ 13.052244] ? __switch_to+0x47/0xf50 [ 13.052273] ? __pfx_read_tsc+0x10/0x10 [ 13.052295] ? ktime_get_ts64+0x86/0x230 [ 13.052320] kunit_try_run_case+0x1a5/0x480 [ 13.052345] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.052506] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.052533] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.052557] ? __kthread_parkme+0x82/0x180 [ 13.052610] ? preempt_count_sub+0x50/0x80 [ 13.052633] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.052669] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.052694] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.052719] kthread+0x337/0x6f0 [ 13.052737] ? trace_preempt_on+0x20/0xc0 [ 13.052781] ? __pfx_kthread+0x10/0x10 [ 13.052801] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.052823] ? calculate_sigpending+0x7b/0xa0 [ 13.052847] ? __pfx_kthread+0x10/0x10 [ 13.052868] ret_from_fork+0x116/0x1d0 [ 13.052887] ? __pfx_kthread+0x10/0x10 [ 13.052907] ret_from_fork_asm+0x1a/0x30 [ 13.052954] </TASK> [ 13.052965] [ 13.068446] Allocated by task 226: [ 13.068589] kasan_save_stack+0x45/0x70 [ 13.068755] kasan_save_track+0x18/0x40 [ 13.069160] kasan_save_alloc_info+0x3b/0x50 [ 13.069632] __kasan_slab_alloc+0x91/0xa0 [ 13.070158] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.070721] kmem_cache_double_free+0x14f/0x480 [ 13.071303] kunit_try_run_case+0x1a5/0x480 [ 13.071625] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.071931] kthread+0x337/0x6f0 [ 13.072452] ret_from_fork+0x116/0x1d0 [ 13.072850] ret_from_fork_asm+0x1a/0x30 [ 13.073093] [ 13.073314] Freed by task 226: [ 13.073575] kasan_save_stack+0x45/0x70 [ 13.073715] kasan_save_track+0x18/0x40 [ 13.074062] kasan_save_free_info+0x3f/0x60 [ 13.074561] __kasan_slab_free+0x56/0x70 [ 13.075032] kmem_cache_free+0x249/0x420 [ 13.075283] kmem_cache_double_free+0x16a/0x480 [ 13.075443] kunit_try_run_case+0x1a5/0x480 [ 13.075592] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.075802] kthread+0x337/0x6f0 [ 13.076177] ret_from_fork+0x116/0x1d0 [ 13.076695] ret_from_fork_asm+0x1a/0x30 [ 13.077248] [ 13.077462] The buggy address belongs to the object at ffff888102a0d000 [ 13.077462] which belongs to the cache test_cache of size 200 [ 13.078709] The buggy address is located 0 bytes inside of [ 13.078709] 200-byte region [ffff888102a0d000, ffff888102a0d0c8) [ 13.079522] [ 13.079601] The buggy address belongs to the physical page: [ 13.079820] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a0d [ 13.080746] flags: 0x200000000000000(node=0|zone=2) [ 13.081366] page_type: f5(slab) [ 13.081711] raw: 0200000000000000 ffff888101c02b40 dead000000000122 0000000000000000 [ 13.082317] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.082553] page dumped because: kasan: bad access detected [ 13.082723] [ 13.082836] Memory state around the buggy address: [ 13.083329] ffff888102a0cf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.084143] ffff888102a0cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.085130] >ffff888102a0d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.085602] ^ [ 13.085722] ffff888102a0d080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.086488] ffff888102a0d100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.086735] ==================================================================