Date
July 8, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.638030] ================================================================== [ 20.638715] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 20.639260] Read of size 1 at addr fff00000c63df500 by task kunit_try_catch/215 [ 20.639345] [ 20.639389] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 20.639477] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.639530] Hardware name: linux,dummy-virt (DT) [ 20.639564] Call trace: [ 20.639590] show_stack+0x20/0x38 (C) [ 20.639643] dump_stack_lvl+0x8c/0xd0 [ 20.639693] print_report+0x118/0x608 [ 20.639739] kasan_report+0xdc/0x128 [ 20.639784] __kasan_check_byte+0x54/0x70 [ 20.639831] kmem_cache_destroy+0x34/0x218 [ 20.639878] kmem_cache_double_destroy+0x174/0x300 [ 20.639925] kunit_try_run_case+0x170/0x3f0 [ 20.639974] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.640025] kthread+0x328/0x630 [ 20.640069] ret_from_fork+0x10/0x20 [ 20.640116] [ 20.640135] Allocated by task 215: [ 20.640176] kasan_save_stack+0x3c/0x68 [ 20.640217] kasan_save_track+0x20/0x40 [ 20.640255] kasan_save_alloc_info+0x40/0x58 [ 20.640294] __kasan_slab_alloc+0xa8/0xb0 [ 20.640333] kmem_cache_alloc_noprof+0x10c/0x398 [ 20.640373] __kmem_cache_create_args+0x178/0x280 [ 20.640411] kmem_cache_double_destroy+0xc0/0x300 [ 20.640451] kunit_try_run_case+0x170/0x3f0 [ 20.640488] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.640533] kthread+0x328/0x630 [ 20.640566] ret_from_fork+0x10/0x20 [ 20.640604] [ 20.640623] Freed by task 215: [ 20.640650] kasan_save_stack+0x3c/0x68 [ 20.640717] kasan_save_track+0x20/0x40 [ 20.640756] kasan_save_free_info+0x4c/0x78 [ 20.640875] __kasan_slab_free+0x6c/0x98 [ 20.640917] kmem_cache_free+0x260/0x468 [ 20.640954] slab_kmem_cache_release+0x38/0x50 [ 20.641202] kmem_cache_release+0x1c/0x30 [ 20.641314] kobject_put+0x17c/0x420 [ 20.641359] sysfs_slab_release+0x1c/0x30 [ 20.641567] kmem_cache_destroy+0x118/0x218 [ 20.642275] kmem_cache_double_destroy+0x128/0x300 [ 20.642411] kunit_try_run_case+0x170/0x3f0 [ 20.642731] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.643039] kthread+0x328/0x630 [ 20.643358] ret_from_fork+0x10/0x20 [ 20.643551] [ 20.643587] The buggy address belongs to the object at fff00000c63df500 [ 20.643587] which belongs to the cache kmem_cache of size 208 [ 20.643650] The buggy address is located 0 bytes inside of [ 20.643650] freed 208-byte region [fff00000c63df500, fff00000c63df5d0) [ 20.643716] [ 20.644107] The buggy address belongs to the physical page: [ 20.644453] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1063df [ 20.644674] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.644927] page_type: f5(slab) [ 20.645372] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 20.645921] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 20.646024] page dumped because: kasan: bad access detected [ 20.646304] [ 20.646332] Memory state around the buggy address: [ 20.646451] fff00000c63df400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.646702] fff00000c63df480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.646755] >fff00000c63df500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.646794] ^ [ 20.646917] fff00000c63df580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 20.646964] fff00000c63df600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.647349] ==================================================================
[ 13.397331] ================================================================== [ 13.398173] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 13.398450] Read of size 1 at addr ffff888101d19c80 by task kunit_try_catch/233 [ 13.399832] [ 13.399941] CPU: 1 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.399992] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.400003] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.400026] Call Trace: [ 13.400040] <TASK> [ 13.400060] dump_stack_lvl+0x73/0xb0 [ 13.400096] print_report+0xd1/0x650 [ 13.400121] ? __virt_addr_valid+0x1db/0x2d0 [ 13.400148] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.400173] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.400197] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.400222] kasan_report+0x141/0x180 [ 13.400244] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.400272] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.400298] __kasan_check_byte+0x3d/0x50 [ 13.400319] kmem_cache_destroy+0x25/0x1d0 [ 13.400343] kmem_cache_double_destroy+0x1bf/0x380 [ 13.400368] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 13.400392] ? finish_task_switch.isra.0+0x153/0x700 [ 13.400416] ? __switch_to+0x47/0xf50 [ 13.400447] ? __pfx_read_tsc+0x10/0x10 [ 13.400470] ? ktime_get_ts64+0x86/0x230 [ 13.400495] kunit_try_run_case+0x1a5/0x480 [ 13.400522] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.400546] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.400572] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.400596] ? __kthread_parkme+0x82/0x180 [ 13.400633] ? preempt_count_sub+0x50/0x80 [ 13.400656] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.400681] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.400948] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.400983] kthread+0x337/0x6f0 [ 13.401005] ? trace_preempt_on+0x20/0xc0 [ 13.401030] ? __pfx_kthread+0x10/0x10 [ 13.401050] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.401073] ? calculate_sigpending+0x7b/0xa0 [ 13.401098] ? __pfx_kthread+0x10/0x10 [ 13.401119] ret_from_fork+0x116/0x1d0 [ 13.401138] ? __pfx_kthread+0x10/0x10 [ 13.401158] ret_from_fork_asm+0x1a/0x30 [ 13.401191] </TASK> [ 13.401202] [ 13.413490] Allocated by task 233: [ 13.413826] kasan_save_stack+0x45/0x70 [ 13.414392] kasan_save_track+0x18/0x40 [ 13.414827] kasan_save_alloc_info+0x3b/0x50 [ 13.415233] __kasan_slab_alloc+0x91/0xa0 [ 13.415416] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.415825] __kmem_cache_create_args+0x169/0x240 [ 13.416414] kmem_cache_double_destroy+0xd5/0x380 [ 13.416863] kunit_try_run_case+0x1a5/0x480 [ 13.417197] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.417710] kthread+0x337/0x6f0 [ 13.417867] ret_from_fork+0x116/0x1d0 [ 13.418540] ret_from_fork_asm+0x1a/0x30 [ 13.418764] [ 13.418842] Freed by task 233: [ 13.419116] kasan_save_stack+0x45/0x70 [ 13.419308] kasan_save_track+0x18/0x40 [ 13.419506] kasan_save_free_info+0x3f/0x60 [ 13.420300] __kasan_slab_free+0x56/0x70 [ 13.421114] kmem_cache_free+0x249/0x420 [ 13.421734] slab_kmem_cache_release+0x2e/0x40 [ 13.422330] kmem_cache_release+0x16/0x20 [ 13.422493] kobject_put+0x181/0x450 [ 13.422646] sysfs_slab_release+0x16/0x20 [ 13.422789] kmem_cache_destroy+0xf0/0x1d0 [ 13.422988] kmem_cache_double_destroy+0x14e/0x380 [ 13.423369] kunit_try_run_case+0x1a5/0x480 [ 13.424002] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.424248] kthread+0x337/0x6f0 [ 13.424399] ret_from_fork+0x116/0x1d0 [ 13.425029] ret_from_fork_asm+0x1a/0x30 [ 13.425360] [ 13.425503] The buggy address belongs to the object at ffff888101d19c80 [ 13.425503] which belongs to the cache kmem_cache of size 208 [ 13.426262] The buggy address is located 0 bytes inside of [ 13.426262] freed 208-byte region [ffff888101d19c80, ffff888101d19d50) [ 13.427196] [ 13.427296] The buggy address belongs to the physical page: [ 13.427778] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101d19 [ 13.428172] flags: 0x200000000000000(node=0|zone=2) [ 13.428405] page_type: f5(slab) [ 13.429179] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 13.429487] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 13.430050] page dumped because: kasan: bad access detected [ 13.430303] [ 13.430389] Memory state around the buggy address: [ 13.430833] ffff888101d19b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.431301] ffff888101d19c00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.431609] >ffff888101d19c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.431913] ^ [ 13.432260] ffff888101d19d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 13.432547] ffff888101d19d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.433089] ==================================================================