Date
June 17, 2025, 3:40 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 23.560213] ================================================================== [ 23.560368] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 23.560482] Read of size 1 at addr fff00000c3efa500 by task kunit_try_catch/217 [ 23.560545] [ 23.560604] CPU: 1 UID: 0 PID: 217 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT [ 23.560710] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.560765] Hardware name: linux,dummy-virt (DT) [ 23.560810] Call trace: [ 23.560842] show_stack+0x20/0x38 (C) [ 23.560906] dump_stack_lvl+0x8c/0xd0 [ 23.560967] print_report+0x118/0x608 [ 23.561017] kasan_report+0xdc/0x128 [ 23.561069] __kasan_check_byte+0x54/0x70 [ 23.561119] kmem_cache_destroy+0x34/0x218 [ 23.561171] kmem_cache_double_destroy+0x174/0x300 [ 23.561230] kunit_try_run_case+0x170/0x3f0 [ 23.561287] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.561397] kthread+0x328/0x630 [ 23.561457] ret_from_fork+0x10/0x20 [ 23.561513] [ 23.561536] Allocated by task 217: [ 23.561632] kasan_save_stack+0x3c/0x68 [ 23.561769] kasan_save_track+0x20/0x40 [ 23.561830] kasan_save_alloc_info+0x40/0x58 [ 23.561882] __kasan_slab_alloc+0xa8/0xb0 [ 23.561925] kmem_cache_alloc_noprof+0x10c/0x398 [ 23.561973] __kmem_cache_create_args+0x178/0x280 [ 23.562024] kmem_cache_double_destroy+0xc0/0x300 [ 23.562072] kunit_try_run_case+0x170/0x3f0 [ 23.562118] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.562170] kthread+0x328/0x630 [ 23.562211] ret_from_fork+0x10/0x20 [ 23.562254] [ 23.562279] Freed by task 217: [ 23.562315] kasan_save_stack+0x3c/0x68 [ 23.562361] kasan_save_track+0x20/0x40 [ 23.562403] kasan_save_free_info+0x4c/0x78 [ 23.562449] __kasan_slab_free+0x6c/0x98 [ 23.562502] kmem_cache_free+0x260/0x468 [ 23.562550] slab_kmem_cache_release+0x38/0x50 [ 23.562595] kmem_cache_release+0x1c/0x30 [ 23.562644] kobject_put+0x17c/0x420 [ 23.562687] sysfs_slab_release+0x1c/0x30 [ 23.562752] kmem_cache_destroy+0x118/0x218 [ 23.562808] kmem_cache_double_destroy+0x128/0x300 [ 23.562865] kunit_try_run_case+0x170/0x3f0 [ 23.562914] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.562969] kthread+0x328/0x630 [ 23.563011] ret_from_fork+0x10/0x20 [ 23.563057] [ 23.563085] The buggy address belongs to the object at fff00000c3efa500 [ 23.563085] which belongs to the cache kmem_cache of size 208 [ 23.563155] The buggy address is located 0 bytes inside of [ 23.563155] freed 208-byte region [fff00000c3efa500, fff00000c3efa5d0) [ 23.563234] [ 23.563269] The buggy address belongs to the physical page: [ 23.563311] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103efa [ 23.563383] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 23.563448] page_type: f5(slab) [ 23.563511] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 23.563572] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 23.563624] page dumped because: kasan: bad access detected [ 23.563663] [ 23.563686] Memory state around the buggy address: [ 23.563738] fff00000c3efa400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.563799] fff00000c3efa480: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.563853] >fff00000c3efa500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.563897] ^ [ 23.563935] fff00000c3efa580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 23.563987] fff00000c3efa600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.564029] ==================================================================
[ 20.761145] ================================================================== [ 20.762538] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 20.763473] Read of size 1 at addr ffff888100fada00 by task kunit_try_catch/235 [ 20.764485] [ 20.764710] CPU: 0 UID: 0 PID: 235 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT(voluntary) [ 20.764843] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.764880] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 20.764937] Call Trace: [ 20.764977] <TASK> [ 20.765029] dump_stack_lvl+0x73/0xb0 [ 20.765113] print_report+0xd1/0x650 [ 20.765191] ? __virt_addr_valid+0x1db/0x2d0 [ 20.765265] ? kmem_cache_double_destroy+0x1bf/0x380 [ 20.765472] ? kasan_complete_mode_report_info+0x64/0x200 [ 20.765546] ? kmem_cache_double_destroy+0x1bf/0x380 [ 20.765612] kasan_report+0x141/0x180 [ 20.765683] ? kmem_cache_double_destroy+0x1bf/0x380 [ 20.765821] ? kmem_cache_double_destroy+0x1bf/0x380 [ 20.765907] __kasan_check_byte+0x3d/0x50 [ 20.765947] kmem_cache_destroy+0x25/0x1d0 [ 20.766026] kmem_cache_double_destroy+0x1bf/0x380 [ 20.766112] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 20.766149] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 20.766196] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 20.766235] kunit_try_run_case+0x1a5/0x480 [ 20.766276] ? __pfx_kunit_try_run_case+0x10/0x10 [ 20.766335] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 20.766375] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 20.766410] ? __kthread_parkme+0x82/0x180 [ 20.766445] ? preempt_count_sub+0x50/0x80 [ 20.766487] ? __pfx_kunit_try_run_case+0x10/0x10 [ 20.766524] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.766558] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 20.766593] kthread+0x337/0x6f0 [ 20.766618] ? trace_preempt_on+0x20/0xc0 [ 20.766656] ? __pfx_kthread+0x10/0x10 [ 20.766684] ? _raw_spin_unlock_irq+0x47/0x80 [ 20.766716] ? calculate_sigpending+0x7b/0xa0 [ 20.766771] ? __pfx_kthread+0x10/0x10 [ 20.766802] ret_from_fork+0x41/0x80 [ 20.766853] ? __pfx_kthread+0x10/0x10 [ 20.766892] ret_from_fork_asm+0x1a/0x30 [ 20.766963] </TASK> [ 20.767005] [ 20.786938] Allocated by task 235: [ 20.787399] kasan_save_stack+0x45/0x70 [ 20.787846] kasan_save_track+0x18/0x40 [ 20.789334] kasan_save_alloc_info+0x3b/0x50 [ 20.790125] __kasan_slab_alloc+0x91/0xa0 [ 20.790523] kmem_cache_alloc_noprof+0x123/0x3f0 [ 20.791174] __kmem_cache_create_args+0x169/0x240 [ 20.791604] kmem_cache_double_destroy+0xd5/0x380 [ 20.792046] kunit_try_run_case+0x1a5/0x480 [ 20.792999] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.793614] kthread+0x337/0x6f0 [ 20.793898] ret_from_fork+0x41/0x80 [ 20.794549] ret_from_fork_asm+0x1a/0x30 [ 20.794912] [ 20.795111] Freed by task 235: [ 20.795452] kasan_save_stack+0x45/0x70 [ 20.795867] kasan_save_track+0x18/0x40 [ 20.796223] kasan_save_free_info+0x3f/0x60 [ 20.797443] __kasan_slab_free+0x56/0x70 [ 20.797855] kmem_cache_free+0x249/0x420 [ 20.798634] slab_kmem_cache_release+0x2e/0x40 [ 20.799414] kmem_cache_release+0x16/0x20 [ 20.799926] kobject_put+0x181/0x450 [ 20.800480] sysfs_slab_release+0x16/0x20 [ 20.800916] kmem_cache_destroy+0xf0/0x1d0 [ 20.801393] kmem_cache_double_destroy+0x14e/0x380 [ 20.802002] kunit_try_run_case+0x1a5/0x480 [ 20.802891] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.803448] kthread+0x337/0x6f0 [ 20.803931] ret_from_fork+0x41/0x80 [ 20.804629] ret_from_fork_asm+0x1a/0x30 [ 20.805263] [ 20.805491] The buggy address belongs to the object at ffff888100fada00 [ 20.805491] which belongs to the cache kmem_cache of size 208 [ 20.806657] The buggy address is located 0 bytes inside of [ 20.806657] freed 208-byte region [ffff888100fada00, ffff888100fadad0) [ 20.807917] [ 20.808237] The buggy address belongs to the physical page: [ 20.808735] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100fad [ 20.809745] flags: 0x200000000000000(node=0|zone=2) [ 20.810515] page_type: f5(slab) [ 20.810910] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 20.811910] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 20.812607] page dumped because: kasan: bad access detected [ 20.813367] [ 20.813632] Memory state around the buggy address: [ 20.814001] ffff888100fad900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.814905] ffff888100fad980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.815732] >ffff888100fada00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.816523] ^ [ 20.816869] ffff888100fada80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 20.817579] ffff888100fadb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.818373] ==================================================================