Date
June 23, 2025, 7:07 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 34.756512] ================================================================== [ 34.756671] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 34.756850] Read of size 1 at addr fff00000c598f640 by task kunit_try_catch/227 [ 34.756977] [ 34.757303] CPU: 0 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250623 #1 PREEMPT [ 34.757744] Tainted: [B]=BAD_PAGE, [N]=TEST [ 34.757832] Hardware name: linux,dummy-virt (DT) [ 34.758114] Call trace: [ 34.758191] show_stack+0x20/0x38 (C) [ 34.758337] dump_stack_lvl+0x8c/0xd0 [ 34.758524] print_report+0x118/0x608 [ 34.758665] kasan_report+0xdc/0x128 [ 34.758807] __kasan_check_byte+0x54/0x70 [ 34.758970] kmem_cache_destroy+0x34/0x218 [ 34.759197] kmem_cache_double_destroy+0x174/0x300 [ 34.759406] kunit_try_run_case+0x170/0x3f0 [ 34.759536] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.759684] kthread+0x328/0x630 [ 34.759811] ret_from_fork+0x10/0x20 [ 34.759941] [ 34.760005] Allocated by task 227: [ 34.760102] kasan_save_stack+0x3c/0x68 [ 34.760207] kasan_save_track+0x20/0x40 [ 34.760322] kasan_save_alloc_info+0x40/0x58 [ 34.760425] __kasan_slab_alloc+0xa8/0xb0 [ 34.760523] kmem_cache_alloc_noprof+0x10c/0x398 [ 34.760651] __kmem_cache_create_args+0x178/0x280 [ 34.760774] kmem_cache_double_destroy+0xc0/0x300 [ 34.760881] kunit_try_run_case+0x170/0x3f0 [ 34.760977] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.761503] kthread+0x328/0x630 [ 34.761903] ret_from_fork+0x10/0x20 [ 34.762373] [ 34.762613] Freed by task 227: [ 34.762823] kasan_save_stack+0x3c/0x68 [ 34.763158] kasan_save_track+0x20/0x40 [ 34.763508] kasan_save_free_info+0x4c/0x78 [ 34.763872] __kasan_slab_free+0x6c/0x98 [ 34.764424] kmem_cache_free+0x260/0x468 [ 34.764695] slab_kmem_cache_release+0x38/0x50 [ 34.765088] kmem_cache_release+0x1c/0x30 [ 34.765272] kobject_put+0x17c/0x420 [ 34.765517] sysfs_slab_release+0x1c/0x30 [ 34.765726] kmem_cache_destroy+0x118/0x218 [ 34.765826] kmem_cache_double_destroy+0x128/0x300 [ 34.766221] kunit_try_run_case+0x170/0x3f0 [ 34.766530] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.766658] kthread+0x328/0x630 [ 34.766766] ret_from_fork+0x10/0x20 [ 34.766873] [ 34.767158] The buggy address belongs to the object at fff00000c598f640 [ 34.767158] which belongs to the cache kmem_cache of size 208 [ 34.767672] The buggy address is located 0 bytes inside of [ 34.767672] freed 208-byte region [fff00000c598f640, fff00000c598f710) [ 34.768117] [ 34.768301] The buggy address belongs to the physical page: [ 34.768542] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10598f [ 34.768760] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.769826] page_type: f5(slab) [ 34.769984] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 34.771189] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 34.771323] page dumped because: kasan: bad access detected [ 34.771400] [ 34.771445] Memory state around the buggy address: [ 34.772672] fff00000c598f500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.773272] fff00000c598f580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 34.773871] >fff00000c598f600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 34.773977] ^ [ 34.774880] fff00000c598f680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.775427] fff00000c598f700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.775614] ==================================================================
[ 22.700514] ================================================================== [ 22.700944] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 22.701325] Read of size 1 at addr ffff888101ba5dc0 by task kunit_try_catch/244 [ 22.702171] [ 22.702374] CPU: 1 UID: 0 PID: 244 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250623 #1 PREEMPT(voluntary) [ 22.702488] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.702515] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.702561] Call Trace: [ 22.702959] <TASK> [ 22.703005] dump_stack_lvl+0x73/0xb0 [ 22.703080] print_report+0xd1/0x650 [ 22.703125] ? __virt_addr_valid+0x1db/0x2d0 [ 22.703164] ? kmem_cache_double_destroy+0x1bf/0x380 [ 22.703190] ? kasan_complete_mode_report_info+0x64/0x200 [ 22.703212] ? kmem_cache_double_destroy+0x1bf/0x380 [ 22.703232] kasan_report+0x141/0x180 [ 22.703252] ? kmem_cache_double_destroy+0x1bf/0x380 [ 22.703274] ? kmem_cache_double_destroy+0x1bf/0x380 [ 22.703294] __kasan_check_byte+0x3d/0x50 [ 22.703311] kmem_cache_destroy+0x25/0x1d0 [ 22.703335] kmem_cache_double_destroy+0x1bf/0x380 [ 22.703356] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 22.703399] ? finish_task_switch.isra.0+0x153/0x700 [ 22.703430] ? __switch_to+0x47/0xf50 [ 22.703467] ? __pfx_read_tsc+0x10/0x10 [ 22.703497] ? ktime_get_ts64+0x86/0x230 [ 22.703529] kunit_try_run_case+0x1a5/0x480 [ 22.703563] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.703591] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 22.703620] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.703650] ? __kthread_parkme+0x82/0x180 [ 22.703679] ? preempt_count_sub+0x50/0x80 [ 22.703710] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.703741] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.703769] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.703789] kthread+0x337/0x6f0 [ 22.703805] ? trace_preempt_on+0x20/0xc0 [ 22.703827] ? __pfx_kthread+0x10/0x10 [ 22.703853] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.703873] ? calculate_sigpending+0x7b/0xa0 [ 22.703894] ? __pfx_kthread+0x10/0x10 [ 22.703912] ret_from_fork+0x116/0x1d0 [ 22.703928] ? __pfx_kthread+0x10/0x10 [ 22.703946] ret_from_fork_asm+0x1a/0x30 [ 22.703973] </TASK> [ 22.703985] [ 22.715592] Allocated by task 244: [ 22.715839] kasan_save_stack+0x45/0x70 [ 22.716548] kasan_save_track+0x18/0x40 [ 22.716915] kasan_save_alloc_info+0x3b/0x50 [ 22.717096] __kasan_slab_alloc+0x91/0xa0 [ 22.717525] kmem_cache_alloc_noprof+0x123/0x3f0 [ 22.717843] __kmem_cache_create_args+0x169/0x240 [ 22.718170] kmem_cache_double_destroy+0xd5/0x380 [ 22.718513] kunit_try_run_case+0x1a5/0x480 [ 22.718696] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.719364] kthread+0x337/0x6f0 [ 22.719816] ret_from_fork+0x116/0x1d0 [ 22.719958] ret_from_fork_asm+0x1a/0x30 [ 22.720504] [ 22.720690] Freed by task 244: [ 22.720938] kasan_save_stack+0x45/0x70 [ 22.721307] kasan_save_track+0x18/0x40 [ 22.721478] kasan_save_free_info+0x3f/0x60 [ 22.721733] __kasan_slab_free+0x56/0x70 [ 22.722332] kmem_cache_free+0x249/0x420 [ 22.722611] slab_kmem_cache_release+0x2e/0x40 [ 22.722784] kmem_cache_release+0x16/0x20 [ 22.723367] kobject_put+0x181/0x450 [ 22.723673] sysfs_slab_release+0x16/0x20 [ 22.724363] kmem_cache_destroy+0xf0/0x1d0 [ 22.724669] kmem_cache_double_destroy+0x14e/0x380 [ 22.724915] kunit_try_run_case+0x1a5/0x480 [ 22.725468] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.725958] kthread+0x337/0x6f0 [ 22.726427] ret_from_fork+0x116/0x1d0 [ 22.726777] ret_from_fork_asm+0x1a/0x30 [ 22.727218] [ 22.727401] The buggy address belongs to the object at ffff888101ba5dc0 [ 22.727401] which belongs to the cache kmem_cache of size 208 [ 22.728164] The buggy address is located 0 bytes inside of [ 22.728164] freed 208-byte region [ffff888101ba5dc0, ffff888101ba5e90) [ 22.728688] [ 22.728826] The buggy address belongs to the physical page: [ 22.729056] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ba5 [ 22.729973] flags: 0x200000000000000(node=0|zone=2) [ 22.730217] page_type: f5(slab) [ 22.730536] raw: 0200000000000000 ffff888100041000 dead000000000100 dead000000000122 [ 22.731107] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 22.731336] page dumped because: kasan: bad access detected [ 22.731695] [ 22.731833] Memory state around the buggy address: [ 22.732298] ffff888101ba5c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.732565] ffff888101ba5d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 22.732982] >ffff888101ba5d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 22.733318] ^ [ 22.733976] ffff888101ba5e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.734484] ffff888101ba5e80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.734892] ==================================================================