Date
July 8, 2025, 7:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.686236] ================================================================== [ 20.686322] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 20.686394] Read of size 1 at addr fff00000c563c780 by task kunit_try_catch/215 [ 20.686445] [ 20.686484] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 20.686571] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.686597] Hardware name: linux,dummy-virt (DT) [ 20.686631] Call trace: [ 20.686654] show_stack+0x20/0x38 (C) [ 20.686705] dump_stack_lvl+0x8c/0xd0 [ 20.686771] print_report+0x118/0x608 [ 20.686818] kasan_report+0xdc/0x128 [ 20.686863] __kasan_check_byte+0x54/0x70 [ 20.686908] kmem_cache_destroy+0x34/0x218 [ 20.686957] kmem_cache_double_destroy+0x174/0x300 [ 20.687006] kunit_try_run_case+0x170/0x3f0 [ 20.687053] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.687106] kthread+0x328/0x630 [ 20.687147] ret_from_fork+0x10/0x20 [ 20.687194] [ 20.687213] Allocated by task 215: [ 20.687242] kasan_save_stack+0x3c/0x68 [ 20.687283] kasan_save_track+0x20/0x40 [ 20.687321] kasan_save_alloc_info+0x40/0x58 [ 20.687363] __kasan_slab_alloc+0xa8/0xb0 [ 20.687401] kmem_cache_alloc_noprof+0x10c/0x398 [ 20.687442] __kmem_cache_create_args+0x178/0x280 [ 20.687495] kmem_cache_double_destroy+0xc0/0x300 [ 20.687535] kunit_try_run_case+0x170/0x3f0 [ 20.687573] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.687616] kthread+0x328/0x630 [ 20.687650] ret_from_fork+0x10/0x20 [ 20.687685] [ 20.687703] Freed by task 215: [ 20.687740] kasan_save_stack+0x3c/0x68 [ 20.687777] kasan_save_track+0x20/0x40 [ 20.687815] kasan_save_free_info+0x4c/0x78 [ 20.687855] __kasan_slab_free+0x6c/0x98 [ 20.687892] kmem_cache_free+0x260/0x468 [ 20.687930] slab_kmem_cache_release+0x38/0x50 [ 20.687970] kmem_cache_release+0x1c/0x30 [ 20.688006] kobject_put+0x17c/0x420 [ 20.688043] sysfs_slab_release+0x1c/0x30 [ 20.688080] kmem_cache_destroy+0x118/0x218 [ 20.688122] kmem_cache_double_destroy+0x128/0x300 [ 20.688162] kunit_try_run_case+0x170/0x3f0 [ 20.688199] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.688244] kthread+0x328/0x630 [ 20.688277] ret_from_fork+0x10/0x20 [ 20.688311] [ 20.688330] The buggy address belongs to the object at fff00000c563c780 [ 20.688330] which belongs to the cache kmem_cache of size 208 [ 20.688387] The buggy address is located 0 bytes inside of [ 20.688387] freed 208-byte region [fff00000c563c780, fff00000c563c850) [ 20.688448] [ 20.688470] The buggy address belongs to the physical page: [ 20.688501] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10563c [ 20.688557] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.688607] page_type: f5(slab) [ 20.688650] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 20.688700] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 20.688749] page dumped because: kasan: bad access detected [ 20.688781] [ 20.688799] Memory state around the buggy address: [ 20.688833] fff00000c563c680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.688876] fff00000c563c700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.688919] >fff00000c563c780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.688955] ^ [ 20.688983] fff00000c563c800: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 20.689026] fff00000c563c880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.689065] ==================================================================
[ 13.830269] ================================================================== [ 13.830916] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 13.831407] Read of size 1 at addr ffff88810161c8c0 by task kunit_try_catch/232 [ 13.832582] [ 13.832780] CPU: 0 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.832829] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.832843] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.832865] Call Trace: [ 13.832879] <TASK> [ 13.832901] dump_stack_lvl+0x73/0xb0 [ 13.832935] print_report+0xd1/0x650 [ 13.832957] ? __virt_addr_valid+0x1db/0x2d0 [ 13.832983] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.833006] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.833032] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.833198] kasan_report+0x141/0x180 [ 13.833224] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.833251] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.833275] __kasan_check_byte+0x3d/0x50 [ 13.833298] kmem_cache_destroy+0x25/0x1d0 [ 13.833321] kmem_cache_double_destroy+0x1bf/0x380 [ 13.833345] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 13.833368] ? finish_task_switch.isra.0+0x153/0x700 [ 13.833390] ? __switch_to+0x47/0xf50 [ 13.833421] ? __pfx_read_tsc+0x10/0x10 [ 13.833442] ? ktime_get_ts64+0x86/0x230 [ 13.833466] kunit_try_run_case+0x1a5/0x480 [ 13.833492] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.833513] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.833537] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.833565] ? __kthread_parkme+0x82/0x180 [ 13.833586] ? preempt_count_sub+0x50/0x80 [ 13.833609] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.833631] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.833653] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.833676] kthread+0x337/0x6f0 [ 13.833694] ? trace_preempt_on+0x20/0xc0 [ 13.833717] ? __pfx_kthread+0x10/0x10 [ 13.833736] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.833757] ? calculate_sigpending+0x7b/0xa0 [ 13.833781] ? __pfx_kthread+0x10/0x10 [ 13.833801] ret_from_fork+0x116/0x1d0 [ 13.833819] ? __pfx_kthread+0x10/0x10 [ 13.833839] ret_from_fork_asm+0x1a/0x30 [ 13.833871] </TASK> [ 13.833883] [ 13.844907] Allocated by task 232: [ 13.845118] kasan_save_stack+0x45/0x70 [ 13.845387] kasan_save_track+0x18/0x40 [ 13.845616] kasan_save_alloc_info+0x3b/0x50 [ 13.845904] __kasan_slab_alloc+0x91/0xa0 [ 13.846378] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.846644] __kmem_cache_create_args+0x169/0x240 [ 13.846860] kmem_cache_double_destroy+0xd5/0x380 [ 13.847118] kunit_try_run_case+0x1a5/0x480 [ 13.847441] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.847724] kthread+0x337/0x6f0 [ 13.847889] ret_from_fork+0x116/0x1d0 [ 13.848201] ret_from_fork_asm+0x1a/0x30 [ 13.848456] [ 13.848626] Freed by task 232: [ 13.848741] kasan_save_stack+0x45/0x70 [ 13.848984] kasan_save_track+0x18/0x40 [ 13.849291] kasan_save_free_info+0x3f/0x60 [ 13.849486] __kasan_slab_free+0x56/0x70 [ 13.849755] kmem_cache_free+0x249/0x420 [ 13.849981] slab_kmem_cache_release+0x2e/0x40 [ 13.850397] kmem_cache_release+0x16/0x20 [ 13.850630] kobject_put+0x181/0x450 [ 13.850854] sysfs_slab_release+0x16/0x20 [ 13.851054] kmem_cache_destroy+0xf0/0x1d0 [ 13.851249] kmem_cache_double_destroy+0x14e/0x380 [ 13.851485] kunit_try_run_case+0x1a5/0x480 [ 13.851697] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.851942] kthread+0x337/0x6f0 [ 13.852110] ret_from_fork+0x116/0x1d0 [ 13.852286] ret_from_fork_asm+0x1a/0x30 [ 13.852471] [ 13.852562] The buggy address belongs to the object at ffff88810161c8c0 [ 13.852562] which belongs to the cache kmem_cache of size 208 [ 13.853204] The buggy address is located 0 bytes inside of [ 13.853204] freed 208-byte region [ffff88810161c8c0, ffff88810161c990) [ 13.853592] [ 13.853670] The buggy address belongs to the physical page: [ 13.853928] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10161c [ 13.854606] flags: 0x200000000000000(node=0|zone=2) [ 13.854888] page_type: f5(slab) [ 13.855128] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 13.855456] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 13.855880] page dumped because: kasan: bad access detected [ 13.856202] [ 13.856300] Memory state around the buggy address: [ 13.856546] ffff88810161c780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.856894] ffff88810161c800: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 13.857307] >ffff88810161c880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 13.857696] ^ [ 13.857956] ffff88810161c900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.858457] ffff88810161c980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.858805] ==================================================================