Date
June 25, 2025, 8:08 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 28.046805] ================================================================== [ 28.046891] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 28.046965] Read of size 1 at addr fff00000c3ef9dc0 by task kunit_try_catch/227 [ 28.047017] [ 28.047060] CPU: 1 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250625 #1 PREEMPT [ 28.047147] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.047174] Hardware name: linux,dummy-virt (DT) [ 28.047206] Call trace: [ 28.047233] show_stack+0x20/0x38 (C) [ 28.047285] dump_stack_lvl+0x8c/0xd0 [ 28.047337] print_report+0x118/0x608 [ 28.047407] kasan_report+0xdc/0x128 [ 28.047455] __kasan_check_byte+0x54/0x70 [ 28.047502] kmem_cache_destroy+0x34/0x218 [ 28.047549] kmem_cache_double_destroy+0x174/0x300 [ 28.047599] kunit_try_run_case+0x170/0x3f0 [ 28.047648] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 28.047700] kthread+0x328/0x630 [ 28.047742] ret_from_fork+0x10/0x20 [ 28.047791] [ 28.047810] Allocated by task 227: [ 28.047839] kasan_save_stack+0x3c/0x68 [ 28.047911] kasan_save_track+0x20/0x40 [ 28.047950] kasan_save_alloc_info+0x40/0x58 [ 28.047988] __kasan_slab_alloc+0xa8/0xb0 [ 28.048026] kmem_cache_alloc_noprof+0x10c/0x398 [ 28.048067] __kmem_cache_create_args+0x178/0x280 [ 28.048107] kmem_cache_double_destroy+0xc0/0x300 [ 28.048147] kunit_try_run_case+0x170/0x3f0 [ 28.048184] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 28.048228] kthread+0x328/0x630 [ 28.048259] ret_from_fork+0x10/0x20 [ 28.048298] [ 28.048316] Freed by task 227: [ 28.048344] kasan_save_stack+0x3c/0x68 [ 28.048383] kasan_save_track+0x20/0x40 [ 28.048431] kasan_save_free_info+0x4c/0x78 [ 28.048466] __kasan_slab_free+0x6c/0x98 [ 28.048504] kmem_cache_free+0x260/0x468 [ 28.048540] slab_kmem_cache_release+0x38/0x50 [ 28.048580] kmem_cache_release+0x1c/0x30 [ 28.048615] kobject_put+0x17c/0x420 [ 28.048653] sysfs_slab_release+0x1c/0x30 [ 28.048690] kmem_cache_destroy+0x118/0x218 [ 28.048730] kmem_cache_double_destroy+0x128/0x300 [ 28.048768] kunit_try_run_case+0x170/0x3f0 [ 28.048804] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 28.048848] kthread+0x328/0x630 [ 28.048881] ret_from_fork+0x10/0x20 [ 28.048917] [ 28.048936] The buggy address belongs to the object at fff00000c3ef9dc0 [ 28.048936] which belongs to the cache kmem_cache of size 208 [ 28.048995] The buggy address is located 0 bytes inside of [ 28.048995] freed 208-byte region [fff00000c3ef9dc0, fff00000c3ef9e90) [ 28.049055] [ 28.049078] The buggy address belongs to the physical page: [ 28.049114] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103ef9 [ 28.049168] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 28.049222] page_type: f5(slab) [ 28.049264] raw: 0bfffe0000000000 fff00000c0001000 dead000000000100 dead000000000122 [ 28.049314] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 28.049355] page dumped because: kasan: bad access detected [ 28.049386] [ 28.049415] Memory state around the buggy address: [ 28.049448] fff00000c3ef9c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.049491] fff00000c3ef9d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 28.049534] >fff00000c3ef9d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 28.049573] ^ [ 28.049606] fff00000c3ef9e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.049647] fff00000c3ef9e80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.049683] ==================================================================
[ 22.703009] ================================================================== [ 22.703686] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 22.704460] Read of size 1 at addr ffff888103ae5280 by task kunit_try_catch/244 [ 22.705285] [ 22.705550] CPU: 1 UID: 0 PID: 244 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250625 #1 PREEMPT(voluntary) [ 22.705604] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.705616] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.705644] Call Trace: [ 22.705657] <TASK> [ 22.705676] dump_stack_lvl+0x73/0xb0 [ 22.705707] print_report+0xd1/0x650 [ 22.705727] ? __virt_addr_valid+0x1db/0x2d0 [ 22.705751] ? kmem_cache_double_destroy+0x1bf/0x380 [ 22.705774] ? kasan_complete_mode_report_info+0x64/0x200 [ 22.705798] ? kmem_cache_double_destroy+0x1bf/0x380 [ 22.705820] kasan_report+0x141/0x180 [ 22.705840] ? kmem_cache_double_destroy+0x1bf/0x380 [ 22.705865] ? kmem_cache_double_destroy+0x1bf/0x380 [ 22.705887] __kasan_check_byte+0x3d/0x50 [ 22.705907] kmem_cache_destroy+0x25/0x1d0 [ 22.705933] kmem_cache_double_destroy+0x1bf/0x380 [ 22.705979] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 22.706000] ? finish_task_switch.isra.0+0x153/0x700 [ 22.706023] ? __switch_to+0x47/0xf50 [ 22.706050] ? __pfx_read_tsc+0x10/0x10 [ 22.706072] ? ktime_get_ts64+0x86/0x230 [ 22.706095] kunit_try_run_case+0x1a5/0x480 [ 22.706121] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.706142] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 22.706163] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.706188] ? __kthread_parkme+0x82/0x180 [ 22.706207] ? preempt_count_sub+0x50/0x80 [ 22.706229] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.706256] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.706278] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.706300] kthread+0x337/0x6f0 [ 22.706318] ? trace_preempt_on+0x20/0xc0 [ 22.706342] ? __pfx_kthread+0x10/0x10 [ 22.706360] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.706382] ? calculate_sigpending+0x7b/0xa0 [ 22.706405] ? __pfx_kthread+0x10/0x10 [ 22.706425] ret_from_fork+0x116/0x1d0 [ 22.706443] ? __pfx_kthread+0x10/0x10 [ 22.706462] ret_from_fork_asm+0x1a/0x30 [ 22.706492] </TASK> [ 22.706503] [ 22.718239] Allocated by task 244: [ 22.718369] kasan_save_stack+0x45/0x70 [ 22.718507] kasan_save_track+0x18/0x40 [ 22.718633] kasan_save_alloc_info+0x3b/0x50 [ 22.718770] __kasan_slab_alloc+0x91/0xa0 [ 22.719274] kmem_cache_alloc_noprof+0x123/0x3f0 [ 22.719456] __kmem_cache_create_args+0x169/0x240 [ 22.719652] kmem_cache_double_destroy+0xd5/0x380 [ 22.720144] kunit_try_run_case+0x1a5/0x480 [ 22.720437] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.720830] kthread+0x337/0x6f0 [ 22.721129] ret_from_fork+0x116/0x1d0 [ 22.721419] ret_from_fork_asm+0x1a/0x30 [ 22.721616] [ 22.721699] Freed by task 244: [ 22.722054] kasan_save_stack+0x45/0x70 [ 22.722388] kasan_save_track+0x18/0x40 [ 22.722579] kasan_save_free_info+0x3f/0x60 [ 22.722764] __kasan_slab_free+0x56/0x70 [ 22.723125] kmem_cache_free+0x249/0x420 [ 22.723500] slab_kmem_cache_release+0x2e/0x40 [ 22.723810] kmem_cache_release+0x16/0x20 [ 22.724092] kobject_put+0x181/0x450 [ 22.724446] sysfs_slab_release+0x16/0x20 [ 22.724719] kmem_cache_destroy+0xf0/0x1d0 [ 22.725099] kmem_cache_double_destroy+0x14e/0x380 [ 22.725505] kunit_try_run_case+0x1a5/0x480 [ 22.725696] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.726131] kthread+0x337/0x6f0 [ 22.726428] ret_from_fork+0x116/0x1d0 [ 22.726796] ret_from_fork_asm+0x1a/0x30 [ 22.727072] [ 22.727189] The buggy address belongs to the object at ffff888103ae5280 [ 22.727189] which belongs to the cache kmem_cache of size 208 [ 22.727664] The buggy address is located 0 bytes inside of [ 22.727664] freed 208-byte region [ffff888103ae5280, ffff888103ae5350) [ 22.728553] [ 22.728664] The buggy address belongs to the physical page: [ 22.729256] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103ae5 [ 22.729778] flags: 0x200000000000000(node=0|zone=2) [ 22.730138] page_type: f5(slab) [ 22.730623] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 22.730968] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 22.731521] page dumped because: kasan: bad access detected [ 22.732321] [ 22.732424] Memory state around the buggy address: [ 22.732580] ffff888103ae5180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.733057] ffff888103ae5200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.733605] >ffff888103ae5280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.733972] ^ [ 22.734235] ffff888103ae5300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 22.734480] ffff888103ae5380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.734761] ==================================================================