Date
July 1, 2025, 11:08 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.955045] ================================================================== [ 19.955915] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 19.956146] Read of size 1 at addr fff00000c7710000 by task kunit_try_catch/216 [ 19.956268] [ 19.956629] CPU: 1 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 19.956746] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.956777] Hardware name: linux,dummy-virt (DT) [ 19.957047] Call trace: [ 19.957186] show_stack+0x20/0x38 (C) [ 19.957329] dump_stack_lvl+0x8c/0xd0 [ 19.957411] print_report+0x118/0x608 [ 19.957464] kasan_report+0xdc/0x128 [ 19.957513] __kasan_check_byte+0x54/0x70 [ 19.957586] kmem_cache_destroy+0x34/0x218 [ 19.957637] kmem_cache_double_destroy+0x174/0x300 [ 19.957693] kunit_try_run_case+0x170/0x3f0 [ 19.958127] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.958386] kthread+0x328/0x630 [ 19.958457] ret_from_fork+0x10/0x20 [ 19.958514] [ 19.958807] Allocated by task 216: [ 19.958850] kasan_save_stack+0x3c/0x68 [ 19.958971] kasan_save_track+0x20/0x40 [ 19.959014] kasan_save_alloc_info+0x40/0x58 [ 19.959470] __kasan_slab_alloc+0xa8/0xb0 [ 19.959676] kmem_cache_alloc_noprof+0x10c/0x398 [ 19.959929] __kmem_cache_create_args+0x178/0x280 [ 19.960102] kmem_cache_double_destroy+0xc0/0x300 [ 19.960531] kunit_try_run_case+0x170/0x3f0 [ 19.960720] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.960833] kthread+0x328/0x630 [ 19.961006] ret_from_fork+0x10/0x20 [ 19.961104] [ 19.961214] Freed by task 216: [ 19.961308] kasan_save_stack+0x3c/0x68 [ 19.961362] kasan_save_track+0x20/0x40 [ 19.961401] kasan_save_free_info+0x4c/0x78 [ 19.961445] __kasan_slab_free+0x6c/0x98 [ 19.961485] kmem_cache_free+0x260/0x468 [ 19.961554] slab_kmem_cache_release+0x38/0x50 [ 19.961598] kmem_cache_release+0x1c/0x30 [ 19.961636] kobject_put+0x17c/0x420 [ 19.961679] sysfs_slab_release+0x1c/0x30 [ 19.961719] kmem_cache_destroy+0x118/0x218 [ 19.961761] kmem_cache_double_destroy+0x128/0x300 [ 19.961804] kunit_try_run_case+0x170/0x3f0 [ 19.961846] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.961893] kthread+0x328/0x630 [ 19.962150] ret_from_fork+0x10/0x20 [ 19.962349] [ 19.962463] The buggy address belongs to the object at fff00000c7710000 [ 19.962463] which belongs to the cache kmem_cache of size 208 [ 19.962651] The buggy address is located 0 bytes inside of [ 19.962651] freed 208-byte region [fff00000c7710000, fff00000c77100d0) [ 19.962844] [ 19.963284] The buggy address belongs to the physical page: [ 19.963470] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107710 [ 19.963692] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.963835] page_type: f5(slab) [ 19.963987] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 19.964045] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.964093] page dumped because: kasan: bad access detected [ 19.964154] [ 19.964175] Memory state around the buggy address: [ 19.964219] fff00000c770ff00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.964268] fff00000c770ff80: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc [ 19.964318] >fff00000c7710000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.964363] ^ [ 19.964861] fff00000c7710080: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 19.964928] fff00000c7710100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.965104] ==================================================================
[ 12.355520] ================================================================== [ 12.356053] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.356643] Read of size 1 at addr ffff888101a2ca00 by task kunit_try_catch/232 [ 12.356947] [ 12.357272] CPU: 1 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.357322] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.357334] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.357360] Call Trace: [ 12.357383] <TASK> [ 12.357402] dump_stack_lvl+0x73/0xb0 [ 12.357435] print_report+0xd1/0x650 [ 12.357459] ? __virt_addr_valid+0x1db/0x2d0 [ 12.357483] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.357507] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.357528] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.357553] kasan_report+0x141/0x180 [ 12.357574] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.357600] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.357623] __kasan_check_byte+0x3d/0x50 [ 12.357645] kmem_cache_destroy+0x25/0x1d0 [ 12.357668] kmem_cache_double_destroy+0x1bf/0x380 [ 12.357725] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.357748] ? finish_task_switch.isra.0+0x153/0x700 [ 12.357811] ? __switch_to+0x47/0xf50 [ 12.357841] ? __pfx_read_tsc+0x10/0x10 [ 12.357863] ? ktime_get_ts64+0x86/0x230 [ 12.357887] kunit_try_run_case+0x1a5/0x480 [ 12.357913] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.358153] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.358182] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.358206] ? __kthread_parkme+0x82/0x180 [ 12.358227] ? preempt_count_sub+0x50/0x80 [ 12.358248] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.358272] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.358295] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.358318] kthread+0x337/0x6f0 [ 12.358337] ? trace_preempt_on+0x20/0xc0 [ 12.358360] ? __pfx_kthread+0x10/0x10 [ 12.358394] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.358415] ? calculate_sigpending+0x7b/0xa0 [ 12.358451] ? __pfx_kthread+0x10/0x10 [ 12.358472] ret_from_fork+0x116/0x1d0 [ 12.358490] ? __pfx_kthread+0x10/0x10 [ 12.358521] ret_from_fork_asm+0x1a/0x30 [ 12.358551] </TASK> [ 12.358563] [ 12.372133] Allocated by task 232: [ 12.372445] kasan_save_stack+0x45/0x70 [ 12.372711] kasan_save_track+0x18/0x40 [ 12.373184] kasan_save_alloc_info+0x3b/0x50 [ 12.373627] __kasan_slab_alloc+0x91/0xa0 [ 12.373963] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.374537] __kmem_cache_create_args+0x169/0x240 [ 12.374840] kmem_cache_double_destroy+0xd5/0x380 [ 12.375175] kunit_try_run_case+0x1a5/0x480 [ 12.375601] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.376077] kthread+0x337/0x6f0 [ 12.376348] ret_from_fork+0x116/0x1d0 [ 12.376505] ret_from_fork_asm+0x1a/0x30 [ 12.376747] [ 12.376923] Freed by task 232: [ 12.377365] kasan_save_stack+0x45/0x70 [ 12.377770] kasan_save_track+0x18/0x40 [ 12.378458] kasan_save_free_info+0x3f/0x60 [ 12.378977] __kasan_slab_free+0x56/0x70 [ 12.379239] kmem_cache_free+0x249/0x420 [ 12.379546] slab_kmem_cache_release+0x2e/0x40 [ 12.379811] kmem_cache_release+0x16/0x20 [ 12.380025] kobject_put+0x181/0x450 [ 12.380447] sysfs_slab_release+0x16/0x20 [ 12.380846] kmem_cache_destroy+0xf0/0x1d0 [ 12.381443] kmem_cache_double_destroy+0x14e/0x380 [ 12.381921] kunit_try_run_case+0x1a5/0x480 [ 12.382828] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.383320] kthread+0x337/0x6f0 [ 12.383465] ret_from_fork+0x116/0x1d0 [ 12.383631] ret_from_fork_asm+0x1a/0x30 [ 12.384084] [ 12.384247] The buggy address belongs to the object at ffff888101a2ca00 [ 12.384247] which belongs to the cache kmem_cache of size 208 [ 12.385522] The buggy address is located 0 bytes inside of [ 12.385522] freed 208-byte region [ffff888101a2ca00, ffff888101a2cad0) [ 12.386094] [ 12.386536] The buggy address belongs to the physical page: [ 12.387176] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101a2c [ 12.387821] flags: 0x200000000000000(node=0|zone=2) [ 12.388191] page_type: f5(slab) [ 12.388526] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.389255] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.389635] page dumped because: kasan: bad access detected [ 12.390429] [ 12.390608] Memory state around the buggy address: [ 12.391118] ffff888101a2c900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.391962] ffff888101a2c980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.392383] >ffff888101a2ca00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.392668] ^ [ 12.392961] ffff888101a2ca80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.393895] ffff888101a2cb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.394883] ==================================================================