Date
July 17, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.823462] ================================================================== [ 16.823543] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 16.823617] Read of size 1 at addr fff00000c78a1280 by task kunit_try_catch/216 [ 16.823671] [ 16.823710] CPU: 0 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.823806] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.823835] Hardware name: linux,dummy-virt (DT) [ 16.823867] Call trace: [ 16.823889] show_stack+0x20/0x38 (C) [ 16.823940] dump_stack_lvl+0x8c/0xd0 [ 16.824006] print_report+0x118/0x5d0 [ 16.824051] kasan_report+0xdc/0x128 [ 16.824094] __kasan_check_byte+0x54/0x70 [ 16.824141] kmem_cache_destroy+0x34/0x218 [ 16.824187] kmem_cache_double_destroy+0x174/0x300 [ 16.824234] kunit_try_run_case+0x170/0x3f0 [ 16.824284] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.824335] kthread+0x328/0x630 [ 16.824380] ret_from_fork+0x10/0x20 [ 16.824426] [ 16.824444] Allocated by task 216: [ 16.824474] kasan_save_stack+0x3c/0x68 [ 16.824515] kasan_save_track+0x20/0x40 [ 16.824553] kasan_save_alloc_info+0x40/0x58 [ 16.824593] __kasan_slab_alloc+0xa8/0xb0 [ 16.824630] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.824671] __kmem_cache_create_args+0x178/0x280 [ 16.824710] kmem_cache_double_destroy+0xc0/0x300 [ 16.824748] kunit_try_run_case+0x170/0x3f0 [ 16.824797] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.824841] kthread+0x328/0x630 [ 16.824874] ret_from_fork+0x10/0x20 [ 16.824908] [ 16.824926] Freed by task 216: [ 16.824952] kasan_save_stack+0x3c/0x68 [ 16.824998] kasan_save_track+0x20/0x40 [ 16.825037] kasan_save_free_info+0x4c/0x78 [ 16.825076] __kasan_slab_free+0x6c/0x98 [ 16.825112] kmem_cache_free+0x260/0x468 [ 16.825149] slab_kmem_cache_release+0x38/0x50 [ 16.825187] kmem_cache_release+0x1c/0x30 [ 16.825224] kobject_put+0x17c/0x420 [ 16.825259] sysfs_slab_release+0x1c/0x30 [ 16.825297] kmem_cache_destroy+0x118/0x218 [ 16.825333] kmem_cache_double_destroy+0x128/0x300 [ 16.825373] kunit_try_run_case+0x170/0x3f0 [ 16.825410] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.825452] kthread+0x328/0x630 [ 16.825485] ret_from_fork+0x10/0x20 [ 16.825519] [ 16.825537] The buggy address belongs to the object at fff00000c78a1280 [ 16.825537] which belongs to the cache kmem_cache of size 208 [ 16.825603] The buggy address is located 0 bytes inside of [ 16.825603] freed 208-byte region [fff00000c78a1280, fff00000c78a1350) [ 16.825664] [ 16.825687] The buggy address belongs to the physical page: [ 16.825722] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078a1 [ 16.825777] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.825830] page_type: f5(slab) [ 16.825873] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 16.825924] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 16.825966] page dumped because: kasan: bad access detected [ 16.826006] [ 16.826023] Memory state around the buggy address: [ 16.826058] fff00000c78a1180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.826101] fff00000c78a1200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.826145] >fff00000c78a1280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.826185] ^ [ 16.826213] fff00000c78a1300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 16.826255] fff00000c78a1380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.826296] ==================================================================
[ 13.895794] ================================================================== [ 13.896228] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 13.896730] Read of size 1 at addr ffff88810166bc80 by task kunit_try_catch/232 [ 13.897066] [ 13.897183] CPU: 0 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.897232] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.897243] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.897267] Call Trace: [ 13.897281] <TASK> [ 13.897299] dump_stack_lvl+0x73/0xb0 [ 13.897331] print_report+0xd1/0x610 [ 13.897376] ? __virt_addr_valid+0x1db/0x2d0 [ 13.897487] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.897516] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.897541] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.897601] kasan_report+0x141/0x180 [ 13.897624] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.897653] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.897678] __kasan_check_byte+0x3d/0x50 [ 13.897701] kmem_cache_destroy+0x25/0x1d0 [ 13.897726] kmem_cache_double_destroy+0x1bf/0x380 [ 13.897751] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 13.897777] ? finish_task_switch.isra.0+0x153/0x700 [ 13.897802] ? __switch_to+0x47/0xf50 [ 13.897850] ? __pfx_read_tsc+0x10/0x10 [ 13.897872] ? ktime_get_ts64+0x86/0x230 [ 13.897898] kunit_try_run_case+0x1a5/0x480 [ 13.897923] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.897947] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.897973] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.898013] ? __kthread_parkme+0x82/0x180 [ 13.898036] ? preempt_count_sub+0x50/0x80 [ 13.898060] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.898084] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.898110] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.898136] kthread+0x337/0x6f0 [ 13.898155] ? trace_preempt_on+0x20/0xc0 [ 13.898180] ? __pfx_kthread+0x10/0x10 [ 13.898201] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.898222] ? calculate_sigpending+0x7b/0xa0 [ 13.898258] ? __pfx_kthread+0x10/0x10 [ 13.898280] ret_from_fork+0x116/0x1d0 [ 13.898298] ? __pfx_kthread+0x10/0x10 [ 13.898319] ret_from_fork_asm+0x1a/0x30 [ 13.898351] </TASK> [ 13.898362] [ 13.909153] Allocated by task 232: [ 13.909639] kasan_save_stack+0x45/0x70 [ 13.909832] kasan_save_track+0x18/0x40 [ 13.909978] kasan_save_alloc_info+0x3b/0x50 [ 13.910491] __kasan_slab_alloc+0x91/0xa0 [ 13.910753] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.910981] __kmem_cache_create_args+0x169/0x240 [ 13.911226] kmem_cache_double_destroy+0xd5/0x380 [ 13.911537] kunit_try_run_case+0x1a5/0x480 [ 13.911775] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.912031] kthread+0x337/0x6f0 [ 13.912214] ret_from_fork+0x116/0x1d0 [ 13.912343] ret_from_fork_asm+0x1a/0x30 [ 13.912717] [ 13.912849] Freed by task 232: [ 13.913042] kasan_save_stack+0x45/0x70 [ 13.913217] kasan_save_track+0x18/0x40 [ 13.913573] kasan_save_free_info+0x3f/0x60 [ 13.913724] __kasan_slab_free+0x56/0x70 [ 13.913920] kmem_cache_free+0x249/0x420 [ 13.914090] slab_kmem_cache_release+0x2e/0x40 [ 13.914268] kmem_cache_release+0x16/0x20 [ 13.914575] kobject_put+0x181/0x450 [ 13.914844] sysfs_slab_release+0x16/0x20 [ 13.914997] kmem_cache_destroy+0xf0/0x1d0 [ 13.915176] kmem_cache_double_destroy+0x14e/0x380 [ 13.915563] kunit_try_run_case+0x1a5/0x480 [ 13.915782] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.916025] kthread+0x337/0x6f0 [ 13.916172] ret_from_fork+0x116/0x1d0 [ 13.916370] ret_from_fork_asm+0x1a/0x30 [ 13.916634] [ 13.916736] The buggy address belongs to the object at ffff88810166bc80 [ 13.916736] which belongs to the cache kmem_cache of size 208 [ 13.917252] The buggy address is located 0 bytes inside of [ 13.917252] freed 208-byte region [ffff88810166bc80, ffff88810166bd50) [ 13.917839] [ 13.917940] The buggy address belongs to the physical page: [ 13.918194] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10166b [ 13.918543] flags: 0x200000000000000(node=0|zone=2) [ 13.918720] page_type: f5(slab) [ 13.918942] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 13.919362] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 13.919732] page dumped because: kasan: bad access detected [ 13.919968] [ 13.920060] Memory state around the buggy address: [ 13.920328] ffff88810166bb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.920645] ffff88810166bc00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.921136] >ffff88810166bc80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.921572] ^ [ 13.921782] ffff88810166bd00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 13.922097] ffff88810166bd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.922372] ==================================================================