Date
July 19, 2025, 11:11 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.668607] ================================================================== [ 16.668695] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 16.668770] Read of size 1 at addr fff00000c1b47640 by task kunit_try_catch/216 [ 16.668823] [ 16.668865] CPU: 0 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.668951] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.668978] Hardware name: linux,dummy-virt (DT) [ 16.669013] Call trace: [ 16.669039] show_stack+0x20/0x38 (C) [ 16.669094] dump_stack_lvl+0x8c/0xd0 [ 16.669146] print_report+0x118/0x5d0 [ 16.669192] kasan_report+0xdc/0x128 [ 16.669237] __kasan_check_byte+0x54/0x70 [ 16.669284] kmem_cache_destroy+0x34/0x218 [ 16.669331] kmem_cache_double_destroy+0x174/0x300 [ 16.669383] kunit_try_run_case+0x170/0x3f0 [ 16.669438] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.669490] kthread+0x328/0x630 [ 16.669546] ret_from_fork+0x10/0x20 [ 16.669597] [ 16.669616] Allocated by task 216: [ 16.669646] kasan_save_stack+0x3c/0x68 [ 16.669690] kasan_save_track+0x20/0x40 [ 16.669730] kasan_save_alloc_info+0x40/0x58 [ 16.669771] __kasan_slab_alloc+0xa8/0xb0 [ 16.669812] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.669855] __kmem_cache_create_args+0x178/0x280 [ 16.669893] kmem_cache_double_destroy+0xc0/0x300 [ 16.669932] kunit_try_run_case+0x170/0x3f0 [ 16.669969] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.670012] kthread+0x328/0x630 [ 16.670044] ret_from_fork+0x10/0x20 [ 16.670080] [ 16.670099] Freed by task 216: [ 16.670125] kasan_save_stack+0x3c/0x68 [ 16.670163] kasan_save_track+0x20/0x40 [ 16.670198] kasan_save_free_info+0x4c/0x78 [ 16.670238] __kasan_slab_free+0x6c/0x98 [ 16.670274] kmem_cache_free+0x260/0x468 [ 16.670312] slab_kmem_cache_release+0x38/0x50 [ 16.670351] kmem_cache_release+0x1c/0x30 [ 16.670386] kobject_put+0x17c/0x420 [ 16.670429] sysfs_slab_release+0x1c/0x30 [ 16.670465] kmem_cache_destroy+0x118/0x218 [ 16.670505] kmem_cache_double_destroy+0x128/0x300 [ 16.670555] kunit_try_run_case+0x170/0x3f0 [ 16.670593] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.670638] kthread+0x328/0x630 [ 16.670671] ret_from_fork+0x10/0x20 [ 16.670708] [ 16.670727] The buggy address belongs to the object at fff00000c1b47640 [ 16.670727] which belongs to the cache kmem_cache of size 208 [ 16.670788] The buggy address is located 0 bytes inside of [ 16.670788] freed 208-byte region [fff00000c1b47640, fff00000c1b47710) [ 16.670848] [ 16.670869] The buggy address belongs to the physical page: [ 16.670903] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101b47 [ 16.670958] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.671009] page_type: f5(slab) [ 16.671052] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 16.671103] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 16.671147] page dumped because: kasan: bad access detected [ 16.671184] [ 16.671203] Memory state around the buggy address: [ 16.671238] fff00000c1b47500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.671282] fff00000c1b47580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 16.671326] >fff00000c1b47600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 16.671364] ^ [ 16.671400] fff00000c1b47680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.671443] fff00000c1b47700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.671482] ==================================================================
[ 12.891782] ================================================================== [ 12.892957] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.894113] Read of size 1 at addr ffff8881018a98c0 by task kunit_try_catch/233 [ 12.895108] [ 12.895355] CPU: 1 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.895408] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.895467] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.895491] Call Trace: [ 12.895649] <TASK> [ 12.895668] dump_stack_lvl+0x73/0xb0 [ 12.895703] print_report+0xd1/0x610 [ 12.895727] ? __virt_addr_valid+0x1db/0x2d0 [ 12.895752] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.895776] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.895799] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.895823] kasan_report+0x141/0x180 [ 12.895845] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.895873] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.895897] __kasan_check_byte+0x3d/0x50 [ 12.895918] kmem_cache_destroy+0x25/0x1d0 [ 12.895941] kmem_cache_double_destroy+0x1bf/0x380 [ 12.895966] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.895990] ? finish_task_switch.isra.0+0x153/0x700 [ 12.896013] ? __switch_to+0x47/0xf50 [ 12.896041] ? __pfx_read_tsc+0x10/0x10 [ 12.896063] ? ktime_get_ts64+0x86/0x230 [ 12.896088] kunit_try_run_case+0x1a5/0x480 [ 12.896114] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.896135] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.896170] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.896193] ? __kthread_parkme+0x82/0x180 [ 12.896214] ? preempt_count_sub+0x50/0x80 [ 12.896237] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.896263] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.896289] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.896313] kthread+0x337/0x6f0 [ 12.896332] ? trace_preempt_on+0x20/0xc0 [ 12.896356] ? __pfx_kthread+0x10/0x10 [ 12.896377] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.896398] ? calculate_sigpending+0x7b/0xa0 [ 12.896424] ? __pfx_kthread+0x10/0x10 [ 12.896444] ret_from_fork+0x116/0x1d0 [ 12.896463] ? __pfx_kthread+0x10/0x10 [ 12.896482] ret_from_fork_asm+0x1a/0x30 [ 12.896529] </TASK> [ 12.896540] [ 12.908717] Allocated by task 233: [ 12.908901] kasan_save_stack+0x45/0x70 [ 12.909751] kasan_save_track+0x18/0x40 [ 12.909929] kasan_save_alloc_info+0x3b/0x50 [ 12.910605] __kasan_slab_alloc+0x91/0xa0 [ 12.910809] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.911025] __kmem_cache_create_args+0x169/0x240 [ 12.911741] kmem_cache_double_destroy+0xd5/0x380 [ 12.912260] kunit_try_run_case+0x1a5/0x480 [ 12.912469] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.912801] kthread+0x337/0x6f0 [ 12.913165] ret_from_fork+0x116/0x1d0 [ 12.913351] ret_from_fork_asm+0x1a/0x30 [ 12.913535] [ 12.913630] Freed by task 233: [ 12.913772] kasan_save_stack+0x45/0x70 [ 12.913961] kasan_save_track+0x18/0x40 [ 12.914610] kasan_save_free_info+0x3f/0x60 [ 12.914777] __kasan_slab_free+0x56/0x70 [ 12.914920] kmem_cache_free+0x249/0x420 [ 12.915066] slab_kmem_cache_release+0x2e/0x40 [ 12.915219] kmem_cache_release+0x16/0x20 [ 12.915365] kobject_put+0x181/0x450 [ 12.915506] sysfs_slab_release+0x16/0x20 [ 12.915648] kmem_cache_destroy+0xf0/0x1d0 [ 12.915845] kmem_cache_double_destroy+0x14e/0x380 [ 12.916034] kunit_try_run_case+0x1a5/0x480 [ 12.916227] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.916678] kthread+0x337/0x6f0 [ 12.917012] ret_from_fork+0x116/0x1d0 [ 12.917330] ret_from_fork_asm+0x1a/0x30 [ 12.917478] [ 12.917561] The buggy address belongs to the object at ffff8881018a98c0 [ 12.917561] which belongs to the cache kmem_cache of size 208 [ 12.918685] The buggy address is located 0 bytes inside of [ 12.918685] freed 208-byte region [ffff8881018a98c0, ffff8881018a9990) [ 12.919743] [ 12.919821] The buggy address belongs to the physical page: [ 12.920000] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1018a9 [ 12.920824] flags: 0x200000000000000(node=0|zone=2) [ 12.921348] page_type: f5(slab) [ 12.921675] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.922305] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.922554] page dumped because: kasan: bad access detected [ 12.922727] [ 12.922796] Memory state around the buggy address: [ 12.922951] ffff8881018a9780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.923580] ffff8881018a9800: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.924314] >ffff8881018a9880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 12.924939] ^ [ 12.925481] ffff8881018a9900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.926254] ffff8881018a9980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.926905] ==================================================================