Date
June 16, 2025, 7:07 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.272228] ================================================================== [ 21.272348] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 21.272447] Read of size 1 at addr fff00000c10ddc80 by task kunit_try_catch/224 [ 21.272508] [ 21.272572] CPU: 0 UID: 0 PID: 224 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250616 #1 PREEMPT [ 21.272681] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.272718] Hardware name: linux,dummy-virt (DT) [ 21.272761] Call trace: [ 21.272802] show_stack+0x20/0x38 (C) [ 21.272910] dump_stack_lvl+0x8c/0xd0 [ 21.272966] print_report+0x118/0x608 [ 21.273022] kasan_report+0xdc/0x128 [ 21.273074] __kasan_check_byte+0x54/0x70 [ 21.273132] kmem_cache_destroy+0x34/0x218 [ 21.273188] kmem_cache_double_destroy+0x174/0x300 [ 21.273247] kunit_try_run_case+0x170/0x3f0 [ 21.273305] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.273367] kthread+0x328/0x630 [ 21.273420] ret_from_fork+0x10/0x20 [ 21.273480] [ 21.273506] Allocated by task 224: [ 21.273548] kasan_save_stack+0x3c/0x68 [ 21.273606] kasan_save_track+0x20/0x40 [ 21.273654] kasan_save_alloc_info+0x40/0x58 [ 21.273700] __kasan_slab_alloc+0xa8/0xb0 [ 21.273747] kmem_cache_alloc_noprof+0x10c/0x398 [ 21.273800] __kmem_cache_create_args+0x178/0x280 [ 21.273873] kmem_cache_double_destroy+0xc0/0x300 [ 21.273927] kunit_try_run_case+0x170/0x3f0 [ 21.273973] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.274022] kthread+0x328/0x630 [ 21.274063] ret_from_fork+0x10/0x20 [ 21.274105] [ 21.274130] Freed by task 224: [ 21.274165] kasan_save_stack+0x3c/0x68 [ 21.274210] kasan_save_track+0x20/0x40 [ 21.274256] kasan_save_free_info+0x4c/0x78 [ 21.274300] __kasan_slab_free+0x6c/0x98 [ 21.274346] kmem_cache_free+0x260/0x468 [ 21.274389] slab_kmem_cache_release+0x38/0x50 [ 21.274436] kmem_cache_release+0x1c/0x30 [ 21.274479] kobject_put+0x17c/0x420 [ 21.274527] sysfs_slab_release+0x1c/0x30 [ 21.274571] kmem_cache_destroy+0x118/0x218 [ 21.274614] kmem_cache_double_destroy+0x128/0x300 [ 21.274662] kunit_try_run_case+0x170/0x3f0 [ 21.274708] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.274761] kthread+0x328/0x630 [ 21.274801] ret_from_fork+0x10/0x20 [ 21.274856] [ 21.274883] The buggy address belongs to the object at fff00000c10ddc80 [ 21.274883] which belongs to the cache kmem_cache of size 208 [ 21.274955] The buggy address is located 0 bytes inside of [ 21.274955] freed 208-byte region [fff00000c10ddc80, fff00000c10ddd50) [ 21.275026] [ 21.275056] The buggy address belongs to the physical page: [ 21.275100] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1010dd [ 21.275168] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.275233] page_type: f5(slab) [ 21.275289] raw: 0bfffe0000000000 fff00000c0001000 dead000000000100 dead000000000122 [ 21.275352] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 21.275407] page dumped because: kasan: bad access detected [ 21.275447] [ 21.275470] Memory state around the buggy address: [ 21.275513] fff00000c10ddb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 21.275569] fff00000c10ddc00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.275622] >fff00000c10ddc80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 21.275665] ^ [ 21.275697] fff00000c10ddd00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 21.275743] fff00000c10ddd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.275788] ==================================================================
[ 12.324698] ================================================================== [ 12.325234] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.325651] Read of size 1 at addr ffff888101d34780 by task kunit_try_catch/240 [ 12.326783] [ 12.327213] CPU: 0 UID: 0 PID: 240 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250616 #1 PREEMPT(voluntary) [ 12.327381] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.327461] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.327486] Call Trace: [ 12.327500] <TASK> [ 12.327522] dump_stack_lvl+0x73/0xb0 [ 12.327560] print_report+0xd1/0x650 [ 12.327585] ? __virt_addr_valid+0x1db/0x2d0 [ 12.327610] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.327633] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.327655] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.327679] kasan_report+0x141/0x180 [ 12.327699] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.327725] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.327749] __kasan_check_byte+0x3d/0x50 [ 12.327770] kmem_cache_destroy+0x25/0x1d0 [ 12.327793] kmem_cache_double_destroy+0x1bf/0x380 [ 12.327815] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.327838] ? finish_task_switch.isra.0+0x153/0x700 [ 12.327860] ? __switch_to+0x47/0xf50 [ 12.327889] ? __pfx_read_tsc+0x10/0x10 [ 12.327911] ? ktime_get_ts64+0x86/0x230 [ 12.327949] kunit_try_run_case+0x1a5/0x480 [ 12.327976] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.327997] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.328019] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.328040] ? __kthread_parkme+0x82/0x180 [ 12.328060] ? preempt_count_sub+0x50/0x80 [ 12.328082] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.328104] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.328126] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.328148] kthread+0x337/0x6f0 [ 12.328166] ? trace_preempt_on+0x20/0xc0 [ 12.328191] ? __pfx_kthread+0x10/0x10 [ 12.328211] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.328231] ? calculate_sigpending+0x7b/0xa0 [ 12.328255] ? __pfx_kthread+0x10/0x10 [ 12.328275] ret_from_fork+0x116/0x1d0 [ 12.328293] ? __pfx_kthread+0x10/0x10 [ 12.328312] ret_from_fork_asm+0x1a/0x30 [ 12.328343] </TASK> [ 12.328354] [ 12.339183] Allocated by task 240: [ 12.339548] kasan_save_stack+0x45/0x70 [ 12.339758] kasan_save_track+0x18/0x40 [ 12.339941] kasan_save_alloc_info+0x3b/0x50 [ 12.340120] __kasan_slab_alloc+0x91/0xa0 [ 12.340308] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.340724] __kmem_cache_create_args+0x169/0x240 [ 12.340915] kmem_cache_double_destroy+0xd5/0x380 [ 12.341186] kunit_try_run_case+0x1a5/0x480 [ 12.341344] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.341509] kthread+0x337/0x6f0 [ 12.341659] ret_from_fork+0x116/0x1d0 [ 12.341980] ret_from_fork_asm+0x1a/0x30 [ 12.342282] [ 12.342372] Freed by task 240: [ 12.342537] kasan_save_stack+0x45/0x70 [ 12.342781] kasan_save_track+0x18/0x40 [ 12.342915] kasan_save_free_info+0x3f/0x60 [ 12.343171] __kasan_slab_free+0x56/0x70 [ 12.343360] kmem_cache_free+0x249/0x420 [ 12.343622] slab_kmem_cache_release+0x2e/0x40 [ 12.343920] kmem_cache_release+0x16/0x20 [ 12.344146] kobject_put+0x181/0x450 [ 12.344313] sysfs_slab_release+0x16/0x20 [ 12.344655] kmem_cache_destroy+0xf0/0x1d0 [ 12.344813] kmem_cache_double_destroy+0x14e/0x380 [ 12.344986] kunit_try_run_case+0x1a5/0x480 [ 12.345191] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.345759] kthread+0x337/0x6f0 [ 12.345969] ret_from_fork+0x116/0x1d0 [ 12.346180] ret_from_fork_asm+0x1a/0x30 [ 12.346316] [ 12.346495] The buggy address belongs to the object at ffff888101d34780 [ 12.346495] which belongs to the cache kmem_cache of size 208 [ 12.347024] The buggy address is located 0 bytes inside of [ 12.347024] freed 208-byte region [ffff888101d34780, ffff888101d34850) [ 12.347708] [ 12.347809] The buggy address belongs to the physical page: [ 12.348097] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101d34 [ 12.348680] flags: 0x200000000000000(node=0|zone=2) [ 12.349062] page_type: f5(slab) [ 12.349241] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.349801] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.350112] page dumped because: kasan: bad access detected [ 12.350356] [ 12.350538] Memory state around the buggy address: [ 12.350741] ffff888101d34680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.351096] ffff888101d34700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.351552] >ffff888101d34780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.351824] ^ [ 12.352002] ffff888101d34800: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.352300] ffff888101d34880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.352682] ==================================================================