Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 22.573596] ================================================================== [ 22.574193] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x184/0x318 [ 22.574544] Read of size 1 at addr fff00000c11cd640 by task kunit_try_catch/203 [ 22.574864] [ 22.575080] CPU: 0 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 22.575201] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.575259] Hardware name: linux,dummy-virt (DT) [ 22.575336] Call trace: [ 22.575413] dump_backtrace+0x9c/0x128 [ 22.575516] show_stack+0x20/0x38 [ 22.575618] dump_stack_lvl+0x8c/0xd0 [ 22.575740] print_report+0x118/0x5f0 [ 22.575850] kasan_report+0xdc/0x128 [ 22.576033] __kasan_check_byte+0x54/0x70 [ 22.576145] kmem_cache_destroy+0x34/0x218 [ 22.576251] kmem_cache_double_destroy+0x184/0x318 [ 22.576367] kunit_try_run_case+0x170/0x3f0 [ 22.576488] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.576872] kthread+0x24c/0x2d0 [ 22.577006] ret_from_fork+0x10/0x20 [ 22.577122] [ 22.584104] Allocated by task 203: [ 22.584534] kasan_save_stack+0x3c/0x68 [ 22.585063] kasan_save_track+0x20/0x40 [ 22.585603] kasan_save_alloc_info+0x40/0x58 [ 22.586178] __kasan_slab_alloc+0xa8/0xb0 [ 22.586693] kmem_cache_alloc_noprof+0xf8/0x300 [ 22.587264] __kmem_cache_create_args+0x19c/0x2c8 [ 22.588184] kmem_cache_double_destroy+0xd0/0x318 [ 22.588726] kunit_try_run_case+0x170/0x3f0 [ 22.589233] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.589912] kthread+0x24c/0x2d0 [ 22.590419] ret_from_fork+0x10/0x20 [ 22.590906] [ 22.591189] Freed by task 203: [ 22.592031] kasan_save_stack+0x3c/0x68 [ 22.592568] kasan_save_track+0x20/0x40 [ 22.593144] kasan_save_free_info+0x4c/0x78 [ 22.593654] __kasan_slab_free+0x6c/0x98 [ 22.594203] kmem_cache_free+0x118/0x460 [ 22.594696] slab_kmem_cache_release+0x38/0x50 [ 22.595226] kmem_cache_release+0x1c/0x30 [ 22.596015] kobject_put+0x17c/0x420 [ 22.596458] sysfs_slab_release+0x1c/0x30 [ 22.597054] kmem_cache_destroy+0x118/0x218 [ 22.597628] kmem_cache_double_destroy+0x130/0x318 [ 22.598413] kunit_try_run_case+0x170/0x3f0 [ 22.598977] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.599939] kthread+0x24c/0x2d0 [ 22.600381] ret_from_fork+0x10/0x20 [ 22.600881] [ 22.601177] The buggy address belongs to the object at fff00000c11cd640 [ 22.601177] which belongs to the cache kmem_cache of size 208 [ 22.602321] The buggy address is located 0 bytes inside of [ 22.602321] freed 208-byte region [fff00000c11cd640, fff00000c11cd710) [ 22.603841] [ 22.604194] The buggy address belongs to the physical page: [ 22.604756] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1011cd [ 22.605575] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 22.606265] page_type: f5(slab) [ 22.606720] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 22.607992] raw: 0000000000000000 00000000800c000c 00000001f5000000 0000000000000000 [ 22.608752] page dumped because: kasan: bad access detected [ 22.609386] [ 22.609685] Memory state around the buggy address: [ 22.610247] fff00000c11cd500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 22.610948] fff00000c11cd580: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 22.611617] >fff00000c11cd600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 22.612664] ^ [ 22.613280] fff00000c11cd680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.613992] fff00000c11cd700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.614715] ==================================================================
[ 19.078708] ================================================================== [ 19.079448] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bd/0x380 [ 19.080793] Read of size 1 at addr ffff888101095640 by task kunit_try_catch/220 [ 19.082021] [ 19.082664] CPU: 1 UID: 0 PID: 220 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 19.082777] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.082813] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.082867] Call Trace: [ 19.082905] <TASK> [ 19.082989] dump_stack_lvl+0x73/0xb0 [ 19.083068] print_report+0xd1/0x640 [ 19.083104] ? __virt_addr_valid+0x1db/0x2d0 [ 19.083139] ? kmem_cache_double_destroy+0x1bd/0x380 [ 19.083169] ? kasan_complete_mode_report_info+0x64/0x200 [ 19.083201] ? kmem_cache_double_destroy+0x1bd/0x380 [ 19.083266] kasan_report+0x140/0x180 [ 19.083302] ? kmem_cache_double_destroy+0x1bd/0x380 [ 19.083335] ? kmem_cache_double_destroy+0x1bd/0x380 [ 19.083365] __kasan_check_byte+0x3d/0x50 [ 19.083396] kmem_cache_destroy+0x25/0x1d0 [ 19.083431] kmem_cache_double_destroy+0x1bd/0x380 [ 19.083486] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 19.083559] ? finish_task_switch.isra.0+0x153/0x700 [ 19.083599] ? __switch_to+0x5d9/0xf60 [ 19.083632] ? __pfx_empty_cache_ctor+0x10/0x10 [ 19.083663] ? __pfx_read_tsc+0x10/0x10 [ 19.083692] ? ktime_get_ts64+0x84/0x230 [ 19.083728] kunit_try_run_case+0x1a6/0x480 [ 19.083760] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.083788] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 19.083832] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.083892] ? __kthread_parkme+0x82/0x160 [ 19.083921] ? preempt_count_sub+0x50/0x80 [ 19.083950] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.083977] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.084012] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.084048] kthread+0x257/0x310 [ 19.084071] ? __pfx_kthread+0x10/0x10 [ 19.084096] ret_from_fork+0x41/0x80 [ 19.084123] ? __pfx_kthread+0x10/0x10 [ 19.084147] ret_from_fork_asm+0x1a/0x30 [ 19.084188] </TASK> [ 19.084201] [ 19.104607] Allocated by task 220: [ 19.105792] kasan_save_stack+0x45/0x70 [ 19.106622] kasan_save_track+0x18/0x40 [ 19.107157] kasan_save_alloc_info+0x3b/0x50 [ 19.107790] __kasan_slab_alloc+0x91/0xa0 [ 19.108299] kmem_cache_alloc_noprof+0x107/0x350 [ 19.109145] __kmem_cache_create_args+0x18a/0x280 [ 19.109583] kmem_cache_double_destroy+0xd3/0x380 [ 19.110812] kunit_try_run_case+0x1a6/0x480 [ 19.111336] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.112039] kthread+0x257/0x310 [ 19.112542] ret_from_fork+0x41/0x80 [ 19.113190] ret_from_fork_asm+0x1a/0x30 [ 19.113983] [ 19.114194] Freed by task 220: [ 19.115020] kasan_save_stack+0x45/0x70 [ 19.115345] kasan_save_track+0x18/0x40 [ 19.116213] kasan_save_free_info+0x3f/0x60 [ 19.116639] __kasan_slab_free+0x56/0x70 [ 19.117014] kmem_cache_free+0x120/0x400 [ 19.118010] slab_kmem_cache_release+0x2e/0x40 [ 19.119173] kmem_cache_release+0x16/0x20 [ 19.119528] kobject_put+0x181/0x450 [ 19.120156] sysfs_slab_release+0x16/0x20 [ 19.120775] kmem_cache_destroy+0xf0/0x1d0 [ 19.122066] kmem_cache_double_destroy+0x14c/0x380 [ 19.122476] kunit_try_run_case+0x1a6/0x480 [ 19.123252] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.123877] kthread+0x257/0x310 [ 19.124546] ret_from_fork+0x41/0x80 [ 19.125232] ret_from_fork_asm+0x1a/0x30 [ 19.125940] [ 19.126127] The buggy address belongs to the object at ffff888101095640 [ 19.126127] which belongs to the cache kmem_cache of size 208 [ 19.128046] The buggy address is located 0 bytes inside of [ 19.128046] freed 208-byte region [ffff888101095640, ffff888101095710) [ 19.129287] [ 19.129496] The buggy address belongs to the physical page: [ 19.130466] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101095 [ 19.131469] flags: 0x200000000000000(node=0|zone=2) [ 19.132173] page_type: f5(slab) [ 19.132991] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 19.133506] raw: 0000000000000000 00000000800c000c 00000001f5000000 0000000000000000 [ 19.134395] page dumped because: kasan: bad access detected [ 19.135404] [ 19.135613] Memory state around the buggy address: [ 19.136581] ffff888101095500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 19.137879] ffff888101095580: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 19.138396] >ffff888101095600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 19.139385] ^ [ 19.139830] ffff888101095680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.140390] ffff888101095700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.140934] ==================================================================