Date
June 18, 2025, 6:43 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 22.071988] ================================================================== [ 22.072128] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 22.072239] Read of size 1 at addr fff00000c0cc5dc0 by task kunit_try_catch/225 [ 22.072300] [ 22.072353] CPU: 1 UID: 0 PID: 225 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc2-next-20250618 #1 PREEMPT [ 22.072461] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 22.072497] Hardware name: linux,dummy-virt (DT) [ 22.072544] Call trace: [ 22.072578] show_stack+0x20/0x38 (C) [ 22.072643] dump_stack_lvl+0x8c/0xd0 [ 22.072704] print_report+0x118/0x608 [ 22.072760] kasan_report+0xdc/0x128 [ 22.072813] __kasan_check_byte+0x54/0x70 [ 22.072869] kmem_cache_destroy+0x34/0x218 [ 22.072925] kmem_cache_double_destroy+0x174/0x300 [ 22.072981] kunit_try_run_case+0x170/0x3f0 [ 22.073054] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.073118] kthread+0x328/0x630 [ 22.073168] ret_from_fork+0x10/0x20 [ 22.073226] [ 22.073249] Allocated by task 225: [ 22.073284] kasan_save_stack+0x3c/0x68 [ 22.073336] kasan_save_track+0x20/0x40 [ 22.073378] kasan_save_alloc_info+0x40/0x58 [ 22.073425] __kasan_slab_alloc+0xa8/0xb0 [ 22.073467] kmem_cache_alloc_noprof+0x10c/0x398 [ 22.073513] __kmem_cache_create_args+0x178/0x280 [ 22.073556] kmem_cache_double_destroy+0xc0/0x300 [ 22.073600] kunit_try_run_case+0x170/0x3f0 [ 22.073639] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.073684] kthread+0x328/0x630 [ 22.073720] ret_from_fork+0x10/0x20 [ 22.073760] [ 22.073780] Freed by task 225: [ 22.073811] kasan_save_stack+0x3c/0x68 [ 22.073851] kasan_save_track+0x20/0x40 [ 22.073891] kasan_save_free_info+0x4c/0x78 [ 22.073932] __kasan_slab_free+0x6c/0x98 [ 22.073973] kmem_cache_free+0x260/0x468 [ 22.074012] slab_kmem_cache_release+0x38/0x50 [ 22.074069] kmem_cache_release+0x1c/0x30 [ 22.074134] kobject_put+0x17c/0x420 [ 22.074178] sysfs_slab_release+0x1c/0x30 [ 22.074222] kmem_cache_destroy+0x118/0x218 [ 22.074263] kmem_cache_double_destroy+0x128/0x300 [ 22.074308] kunit_try_run_case+0x170/0x3f0 [ 22.074349] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.074397] kthread+0x328/0x630 [ 22.074434] ret_from_fork+0x10/0x20 [ 22.074473] [ 22.074496] The buggy address belongs to the object at fff00000c0cc5dc0 [ 22.074496] which belongs to the cache kmem_cache of size 208 [ 22.074559] The buggy address is located 0 bytes inside of [ 22.074559] freed 208-byte region [fff00000c0cc5dc0, fff00000c0cc5e90) [ 22.074628] [ 22.074654] The buggy address belongs to the physical page: [ 22.074693] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100cc5 [ 22.074756] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 22.074818] page_type: f5(slab) [ 22.074873] raw: 0bfffe0000000000 fff00000c0001000 dead000000000100 dead000000000122 [ 22.074929] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 22.074974] page dumped because: kasan: bad access detected [ 22.075010] [ 22.075048] Memory state around the buggy address: [ 22.075092] fff00000c0cc5c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.075141] fff00000c0cc5d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 22.075189] >fff00000c0cc5d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 22.075229] ^ [ 22.075268] fff00000c0cc5e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.075311] fff00000c0cc5e80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.075353] ==================================================================
[ 11.970182] ================================================================== [ 11.970855] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 11.971381] Read of size 1 at addr ffff88810108ec80 by task kunit_try_catch/241 [ 11.972080] [ 11.972327] CPU: 1 UID: 0 PID: 241 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250618 #1 PREEMPT(voluntary) [ 11.972384] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.972573] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.972600] Call Trace: [ 11.972614] <TASK> [ 11.972633] dump_stack_lvl+0x73/0xb0 [ 11.972673] print_report+0xd1/0x650 [ 11.972694] ? __virt_addr_valid+0x1db/0x2d0 [ 11.972718] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.972741] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.972766] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.972789] kasan_report+0x141/0x180 [ 11.972809] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.972835] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.972858] __kasan_check_byte+0x3d/0x50 [ 11.972878] kmem_cache_destroy+0x25/0x1d0 [ 11.972904] kmem_cache_double_destroy+0x1bf/0x380 [ 11.972926] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 11.972948] ? finish_task_switch.isra.0+0x153/0x700 [ 11.972971] ? __switch_to+0x47/0xf50 [ 11.972998] ? __pfx_read_tsc+0x10/0x10 [ 11.973020] ? ktime_get_ts64+0x86/0x230 [ 11.973045] kunit_try_run_case+0x1a5/0x480 [ 11.973069] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.973089] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.973112] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.973133] ? __kthread_parkme+0x82/0x180 [ 11.973153] ? preempt_count_sub+0x50/0x80 [ 11.973175] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.973196] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.973233] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.973257] kthread+0x337/0x6f0 [ 11.973276] ? trace_preempt_on+0x20/0xc0 [ 11.973299] ? __pfx_kthread+0x10/0x10 [ 11.973319] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.973339] ? calculate_sigpending+0x7b/0xa0 [ 11.973362] ? __pfx_kthread+0x10/0x10 [ 11.973382] ret_from_fork+0x116/0x1d0 [ 11.973400] ? __pfx_kthread+0x10/0x10 [ 11.973419] ret_from_fork_asm+0x1a/0x30 [ 11.973449] </TASK> [ 11.973459] [ 11.985910] Allocated by task 241: [ 11.986043] kasan_save_stack+0x45/0x70 [ 11.986194] kasan_save_track+0x18/0x40 [ 11.986392] kasan_save_alloc_info+0x3b/0x50 [ 11.986596] __kasan_slab_alloc+0x91/0xa0 [ 11.986783] kmem_cache_alloc_noprof+0x123/0x3f0 [ 11.986998] __kmem_cache_create_args+0x169/0x240 [ 11.987286] kmem_cache_double_destroy+0xd5/0x380 [ 11.987563] kunit_try_run_case+0x1a5/0x480 [ 11.988110] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.988762] kthread+0x337/0x6f0 [ 11.989163] ret_from_fork+0x116/0x1d0 [ 11.989507] ret_from_fork_asm+0x1a/0x30 [ 11.989912] [ 11.990005] Freed by task 241: [ 11.990259] kasan_save_stack+0x45/0x70 [ 11.990678] kasan_save_track+0x18/0x40 [ 11.990947] kasan_save_free_info+0x3f/0x60 [ 11.991083] __kasan_slab_free+0x56/0x70 [ 11.991350] kmem_cache_free+0x249/0x420 [ 11.991845] slab_kmem_cache_release+0x2e/0x40 [ 11.992302] kmem_cache_release+0x16/0x20 [ 11.992741] kobject_put+0x181/0x450 [ 11.993013] sysfs_slab_release+0x16/0x20 [ 11.993402] kmem_cache_destroy+0xf0/0x1d0 [ 11.993856] kmem_cache_double_destroy+0x14e/0x380 [ 11.994008] kunit_try_run_case+0x1a5/0x480 [ 11.994147] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.994777] kthread+0x337/0x6f0 [ 11.995126] ret_from_fork+0x116/0x1d0 [ 11.995571] ret_from_fork_asm+0x1a/0x30 [ 11.995986] [ 11.996183] The buggy address belongs to the object at ffff88810108ec80 [ 11.996183] which belongs to the cache kmem_cache of size 208 [ 11.997199] The buggy address is located 0 bytes inside of [ 11.997199] freed 208-byte region [ffff88810108ec80, ffff88810108ed50) [ 11.998108] [ 11.998200] The buggy address belongs to the physical page: [ 11.998738] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10108e [ 11.999263] flags: 0x200000000000000(node=0|zone=2) [ 11.999745] page_type: f5(slab) [ 12.000080] raw: 0200000000000000 ffff888100041000 dead000000000100 dead000000000122 [ 12.000689] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.001296] page dumped because: kasan: bad access detected [ 12.001646] [ 12.001840] Memory state around the buggy address: [ 12.002394] ffff88810108eb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.002889] ffff88810108ec00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.003492] >ffff88810108ec80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.003701] ^ [ 12.003805] ffff88810108ed00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.004006] ffff88810108ed80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.004356] ==================================================================