Date
July 4, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 30.244725] ================================================================== [ 30.245493] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 30.245590] Free of addr fff00000c9b10000 by task kunit_try_catch/242 [ 30.245635] [ 30.246418] CPU: 0 UID: 0 PID: 242 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250704 #1 PREEMPT [ 30.246695] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.246965] Hardware name: linux,dummy-virt (DT) [ 30.247074] Call trace: [ 30.247099] show_stack+0x20/0x38 (C) [ 30.247519] dump_stack_lvl+0x8c/0xd0 [ 30.247655] print_report+0x118/0x608 [ 30.247723] kasan_report_invalid_free+0xc0/0xe8 [ 30.247772] check_slab_allocation+0xd4/0x108 [ 30.248064] __kasan_slab_pre_free+0x2c/0x48 [ 30.248151] kmem_cache_free+0xf0/0x468 [ 30.248216] kmem_cache_double_free+0x190/0x3c8 [ 30.248275] kunit_try_run_case+0x170/0x3f0 [ 30.248337] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.248418] kthread+0x328/0x630 [ 30.248475] ret_from_fork+0x10/0x20 [ 30.248531] [ 30.248565] Allocated by task 242: [ 30.248607] kasan_save_stack+0x3c/0x68 [ 30.248662] kasan_save_track+0x20/0x40 [ 30.248709] kasan_save_alloc_info+0x40/0x58 [ 30.248753] __kasan_slab_alloc+0xa8/0xb0 [ 30.248794] kmem_cache_alloc_noprof+0x10c/0x398 [ 30.248844] kmem_cache_double_free+0x12c/0x3c8 [ 30.248885] kunit_try_run_case+0x170/0x3f0 [ 30.249420] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.249682] kthread+0x328/0x630 [ 30.250250] ret_from_fork+0x10/0x20 [ 30.250721] [ 30.250894] Freed by task 242: [ 30.251274] kasan_save_stack+0x3c/0x68 [ 30.251393] kasan_save_track+0x20/0x40 [ 30.251458] kasan_save_free_info+0x4c/0x78 [ 30.251667] __kasan_slab_free+0x6c/0x98 [ 30.251853] kmem_cache_free+0x260/0x468 [ 30.252015] kmem_cache_double_free+0x140/0x3c8 [ 30.252112] kunit_try_run_case+0x170/0x3f0 [ 30.252319] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.252504] kthread+0x328/0x630 [ 30.252716] ret_from_fork+0x10/0x20 [ 30.253177] [ 30.253202] The buggy address belongs to the object at fff00000c9b10000 [ 30.253202] which belongs to the cache test_cache of size 200 [ 30.253317] The buggy address is located 0 bytes inside of [ 30.253317] 200-byte region [fff00000c9b10000, fff00000c9b100c8) [ 30.253492] [ 30.253826] The buggy address belongs to the physical page: [ 30.254597] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109b10 [ 30.254704] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 30.254884] page_type: f5(slab) [ 30.255037] raw: 0bfffe0000000000 fff00000c45b3780 dead000000000122 0000000000000000 [ 30.255361] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 30.255490] page dumped because: kasan: bad access detected [ 30.255567] [ 30.255703] Memory state around the buggy address: [ 30.255867] fff00000c9b0ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 30.256301] fff00000c9b0ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 30.256539] >fff00000c9b10000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.256647] ^ [ 30.256678] fff00000c9b10080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.256962] fff00000c9b10100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.257302] ==================================================================
[ 25.671051] ================================================================== [ 25.671567] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 25.671827] Free of addr ffff888105fc9000 by task kunit_try_catch/258 [ 25.672081] [ 25.672180] CPU: 1 UID: 0 PID: 258 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250704 #1 PREEMPT(voluntary) [ 25.672241] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.672255] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.672338] Call Trace: [ 25.672353] <TASK> [ 25.672376] dump_stack_lvl+0x73/0xb0 [ 25.672421] print_report+0xd1/0x650 [ 25.672444] ? __virt_addr_valid+0x1db/0x2d0 [ 25.672471] ? kasan_complete_mode_report_info+0x64/0x200 [ 25.672497] ? kmem_cache_double_free+0x1e5/0x480 [ 25.672522] kasan_report_invalid_free+0x10a/0x130 [ 25.672546] ? kmem_cache_double_free+0x1e5/0x480 [ 25.672572] ? kmem_cache_double_free+0x1e5/0x480 [ 25.672596] check_slab_allocation+0x101/0x130 [ 25.672623] __kasan_slab_pre_free+0x28/0x40 [ 25.672643] kmem_cache_free+0xed/0x420 [ 25.672668] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 25.672692] ? kmem_cache_double_free+0x1e5/0x480 [ 25.672719] kmem_cache_double_free+0x1e5/0x480 [ 25.672744] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 25.672767] ? finish_task_switch.isra.0+0x153/0x700 [ 25.672791] ? __switch_to+0x47/0xf50 [ 25.672825] ? __pfx_read_tsc+0x10/0x10 [ 25.672849] ? ktime_get_ts64+0x86/0x230 [ 25.672877] kunit_try_run_case+0x1a5/0x480 [ 25.672905] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.672929] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.672956] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.672981] ? __kthread_parkme+0x82/0x180 [ 25.673003] ? preempt_count_sub+0x50/0x80 [ 25.673026] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.673051] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.673078] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.673102] kthread+0x337/0x6f0 [ 25.673123] ? trace_preempt_on+0x20/0xc0 [ 25.673184] ? __pfx_kthread+0x10/0x10 [ 25.673206] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.673229] ? calculate_sigpending+0x7b/0xa0 [ 25.673268] ? __pfx_kthread+0x10/0x10 [ 25.673290] ret_from_fork+0x116/0x1d0 [ 25.673310] ? __pfx_kthread+0x10/0x10 [ 25.673331] ret_from_fork_asm+0x1a/0x30 [ 25.673364] </TASK> [ 25.673378] [ 25.688803] Allocated by task 258: [ 25.689127] kasan_save_stack+0x45/0x70 [ 25.689293] kasan_save_track+0x18/0x40 [ 25.689437] kasan_save_alloc_info+0x3b/0x50 [ 25.689580] __kasan_slab_alloc+0x91/0xa0 [ 25.689712] kmem_cache_alloc_noprof+0x123/0x3f0 [ 25.689864] kmem_cache_double_free+0x14f/0x480 [ 25.690010] kunit_try_run_case+0x1a5/0x480 [ 25.690150] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.690316] kthread+0x337/0x6f0 [ 25.690635] ret_from_fork+0x116/0x1d0 [ 25.690979] ret_from_fork_asm+0x1a/0x30 [ 25.691471] [ 25.691636] Freed by task 258: [ 25.691981] kasan_save_stack+0x45/0x70 [ 25.692435] kasan_save_track+0x18/0x40 [ 25.693036] kasan_save_free_info+0x3f/0x60 [ 25.693488] __kasan_slab_free+0x56/0x70 [ 25.693912] kmem_cache_free+0x249/0x420 [ 25.694406] kmem_cache_double_free+0x16a/0x480 [ 25.694964] kunit_try_run_case+0x1a5/0x480 [ 25.695531] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.696088] kthread+0x337/0x6f0 [ 25.696456] ret_from_fork+0x116/0x1d0 [ 25.697062] ret_from_fork_asm+0x1a/0x30 [ 25.697564] [ 25.697742] The buggy address belongs to the object at ffff888105fc9000 [ 25.697742] which belongs to the cache test_cache of size 200 [ 25.698272] The buggy address is located 0 bytes inside of [ 25.698272] 200-byte region [ffff888105fc9000, ffff888105fc90c8) [ 25.699614] [ 25.699839] The buggy address belongs to the physical page: [ 25.700064] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105fc9 [ 25.700842] flags: 0x200000000000000(node=0|zone=2) [ 25.701413] page_type: f5(slab) [ 25.701875] raw: 0200000000000000 ffff8881010bd8c0 dead000000000122 0000000000000000 [ 25.702384] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 25.702629] page dumped because: kasan: bad access detected [ 25.702800] [ 25.702866] Memory state around the buggy address: [ 25.703024] ffff888105fc8f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.703466] ffff888105fc8f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.703799] >ffff888105fc9000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.704056] ^ [ 25.704407] ffff888105fc9080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 25.704758] ffff888105fc9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.705109] ==================================================================