Date
July 8, 2025, 7:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.049213] ================================================================== [ 20.049301] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 20.049370] Free of addr fff00000c6461000 by task kunit_try_catch/209 [ 20.049560] [ 20.049605] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 20.049692] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.049761] Hardware name: linux,dummy-virt (DT) [ 20.049796] Call trace: [ 20.049848] show_stack+0x20/0x38 (C) [ 20.049953] dump_stack_lvl+0x8c/0xd0 [ 20.050005] print_report+0x118/0x608 [ 20.050052] kasan_report_invalid_free+0xc0/0xe8 [ 20.050101] check_slab_allocation+0xd4/0x108 [ 20.050158] __kasan_slab_pre_free+0x2c/0x48 [ 20.050213] kmem_cache_free+0xf0/0x468 [ 20.050259] kmem_cache_double_free+0x190/0x3c8 [ 20.050365] kunit_try_run_case+0x170/0x3f0 [ 20.050432] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.050483] kthread+0x328/0x630 [ 20.050527] ret_from_fork+0x10/0x20 [ 20.050575] [ 20.050733] Allocated by task 209: [ 20.050784] kasan_save_stack+0x3c/0x68 [ 20.050827] kasan_save_track+0x20/0x40 [ 20.050864] kasan_save_alloc_info+0x40/0x58 [ 20.050912] __kasan_slab_alloc+0xa8/0xb0 [ 20.050950] kmem_cache_alloc_noprof+0x10c/0x398 [ 20.050990] kmem_cache_double_free+0x12c/0x3c8 [ 20.051036] kunit_try_run_case+0x170/0x3f0 [ 20.051081] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.051152] kthread+0x328/0x630 [ 20.051185] ret_from_fork+0x10/0x20 [ 20.051236] [ 20.051263] Freed by task 209: [ 20.051342] kasan_save_stack+0x3c/0x68 [ 20.051379] kasan_save_track+0x20/0x40 [ 20.051424] kasan_save_free_info+0x4c/0x78 [ 20.051475] __kasan_slab_free+0x6c/0x98 [ 20.051531] kmem_cache_free+0x260/0x468 [ 20.051578] kmem_cache_double_free+0x140/0x3c8 [ 20.051617] kunit_try_run_case+0x170/0x3f0 [ 20.051895] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.051947] kthread+0x328/0x630 [ 20.051979] ret_from_fork+0x10/0x20 [ 20.052168] [ 20.052218] The buggy address belongs to the object at fff00000c6461000 [ 20.052218] which belongs to the cache test_cache of size 200 [ 20.052362] The buggy address is located 0 bytes inside of [ 20.052362] 200-byte region [fff00000c6461000, fff00000c64610c8) [ 20.052479] [ 20.052573] The buggy address belongs to the physical page: [ 20.052605] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106461 [ 20.052662] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.052724] page_type: f5(slab) [ 20.052792] raw: 0bfffe0000000000 fff00000ffe78f00 dead000000000122 0000000000000000 [ 20.052876] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 20.052979] page dumped because: kasan: bad access detected [ 20.053049] [ 20.053393] Memory state around the buggy address: [ 20.053471] fff00000c6460f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.053535] fff00000c6460f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.053578] >fff00000c6461000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.053639] ^ [ 20.053698] fff00000c6461080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 20.053751] fff00000c6461100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.053815] ==================================================================
[ 13.655695] ================================================================== [ 13.656189] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.656908] Free of addr ffff888102618000 by task kunit_try_catch/226 [ 13.657488] [ 13.657746] CPU: 1 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.657795] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.657807] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.657828] Call Trace: [ 13.657841] <TASK> [ 13.657858] dump_stack_lvl+0x73/0xb0 [ 13.657889] print_report+0xd1/0x650 [ 13.657933] ? __virt_addr_valid+0x1db/0x2d0 [ 13.657960] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.657986] ? kmem_cache_double_free+0x1e5/0x480 [ 13.658010] kasan_report_invalid_free+0x10a/0x130 [ 13.658033] ? kmem_cache_double_free+0x1e5/0x480 [ 13.658170] ? kmem_cache_double_free+0x1e5/0x480 [ 13.658193] check_slab_allocation+0x101/0x130 [ 13.658215] __kasan_slab_pre_free+0x28/0x40 [ 13.658235] kmem_cache_free+0xed/0x420 [ 13.658255] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.658274] ? kmem_cache_double_free+0x1e5/0x480 [ 13.658300] kmem_cache_double_free+0x1e5/0x480 [ 13.658322] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.658344] ? finish_task_switch.isra.0+0x153/0x700 [ 13.658365] ? __switch_to+0x47/0xf50 [ 13.658394] ? __pfx_read_tsc+0x10/0x10 [ 13.658414] ? ktime_get_ts64+0x86/0x230 [ 13.658437] kunit_try_run_case+0x1a5/0x480 [ 13.658460] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.658481] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.658524] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.658546] ? __kthread_parkme+0x82/0x180 [ 13.658565] ? preempt_count_sub+0x50/0x80 [ 13.658588] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.658610] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.658631] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.658653] kthread+0x337/0x6f0 [ 13.658671] ? trace_preempt_on+0x20/0xc0 [ 13.658693] ? __pfx_kthread+0x10/0x10 [ 13.658713] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.658732] ? calculate_sigpending+0x7b/0xa0 [ 13.658756] ? __pfx_kthread+0x10/0x10 [ 13.658776] ret_from_fork+0x116/0x1d0 [ 13.658793] ? __pfx_kthread+0x10/0x10 [ 13.658812] ret_from_fork_asm+0x1a/0x30 [ 13.658843] </TASK> [ 13.658854] [ 13.670895] Allocated by task 226: [ 13.671710] kasan_save_stack+0x45/0x70 [ 13.671908] kasan_save_track+0x18/0x40 [ 13.672147] kasan_save_alloc_info+0x3b/0x50 [ 13.672334] __kasan_slab_alloc+0x91/0xa0 [ 13.672755] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.673054] kmem_cache_double_free+0x14f/0x480 [ 13.673326] kunit_try_run_case+0x1a5/0x480 [ 13.673737] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.673991] kthread+0x337/0x6f0 [ 13.674351] ret_from_fork+0x116/0x1d0 [ 13.674636] ret_from_fork_asm+0x1a/0x30 [ 13.674859] [ 13.675096] Freed by task 226: [ 13.675408] kasan_save_stack+0x45/0x70 [ 13.675562] kasan_save_track+0x18/0x40 [ 13.676155] kasan_save_free_info+0x3f/0x60 [ 13.676456] __kasan_slab_free+0x56/0x70 [ 13.676826] kmem_cache_free+0x249/0x420 [ 13.677025] kmem_cache_double_free+0x16a/0x480 [ 13.677604] kunit_try_run_case+0x1a5/0x480 [ 13.677803] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.678162] kthread+0x337/0x6f0 [ 13.678406] ret_from_fork+0x116/0x1d0 [ 13.678624] ret_from_fork_asm+0x1a/0x30 [ 13.678946] [ 13.679061] The buggy address belongs to the object at ffff888102618000 [ 13.679061] which belongs to the cache test_cache of size 200 [ 13.680295] The buggy address is located 0 bytes inside of [ 13.680295] 200-byte region [ffff888102618000, ffff8881026180c8) [ 13.681017] [ 13.681380] The buggy address belongs to the physical page: [ 13.681658] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102618 [ 13.682156] flags: 0x200000000000000(node=0|zone=2) [ 13.682561] page_type: f5(slab) [ 13.682756] raw: 0200000000000000 ffff888101f21280 dead000000000122 0000000000000000 [ 13.683297] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.683954] page dumped because: kasan: bad access detected [ 13.684422] [ 13.684558] Memory state around the buggy address: [ 13.684869] ffff888102617f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.685243] ffff888102617f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.685849] >ffff888102618000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.686401] ^ [ 13.686628] ffff888102618080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.687018] ffff888102618100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.687679] ==================================================================