Date
June 5, 2025, 7:08 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 27.359117] ================================================================== [ 27.359264] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 27.360505] Read of size 1 at addr fff00000c11a6dc0 by task kunit_try_catch/215 [ 27.360719] [ 27.360815] CPU: 0 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250605 #1 PREEMPT [ 27.361461] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.361542] Hardware name: linux,dummy-virt (DT) [ 27.362174] Call trace: [ 27.362592] show_stack+0x20/0x38 (C) [ 27.362800] dump_stack_lvl+0x8c/0xd0 [ 27.363147] print_report+0x118/0x608 [ 27.363527] kasan_report+0xdc/0x128 [ 27.363646] __kasan_check_byte+0x54/0x70 [ 27.364048] kmem_cache_destroy+0x34/0x218 [ 27.364403] kmem_cache_double_destroy+0x174/0x300 [ 27.364864] kunit_try_run_case+0x170/0x3f0 [ 27.365021] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.365399] kthread+0x328/0x630 [ 27.365827] ret_from_fork+0x10/0x20 [ 27.366438] [ 27.366506] Allocated by task 215: [ 27.366611] kasan_save_stack+0x3c/0x68 [ 27.366864] kasan_save_track+0x20/0x40 [ 27.367049] kasan_save_alloc_info+0x40/0x58 [ 27.367238] __kasan_slab_alloc+0xa8/0xb0 [ 27.367536] kmem_cache_alloc_noprof+0x10c/0x398 [ 27.367859] __kmem_cache_create_args+0x178/0x280 [ 27.368361] kmem_cache_double_destroy+0xc0/0x300 [ 27.368487] kunit_try_run_case+0x170/0x3f0 [ 27.368901] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.369055] kthread+0x328/0x630 [ 27.369149] ret_from_fork+0x10/0x20 [ 27.369393] [ 27.369830] Freed by task 215: [ 27.369917] kasan_save_stack+0x3c/0x68 [ 27.370046] kasan_save_track+0x20/0x40 [ 27.370181] kasan_save_free_info+0x4c/0x78 [ 27.370626] __kasan_slab_free+0x6c/0x98 [ 27.370930] kmem_cache_free+0x260/0x468 [ 27.371055] slab_kmem_cache_release+0x38/0x50 [ 27.372098] kmem_cache_release+0x1c/0x30 [ 27.372846] kobject_put+0x17c/0x420 [ 27.372979] sysfs_slab_release+0x1c/0x30 [ 27.373118] kmem_cache_destroy+0x118/0x218 [ 27.373454] kmem_cache_double_destroy+0x128/0x300 [ 27.373564] kunit_try_run_case+0x170/0x3f0 [ 27.373878] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.374223] kthread+0x328/0x630 [ 27.374740] ret_from_fork+0x10/0x20 [ 27.374842] [ 27.374889] The buggy address belongs to the object at fff00000c11a6dc0 [ 27.374889] which belongs to the cache kmem_cache of size 208 [ 27.375031] The buggy address is located 0 bytes inside of [ 27.375031] freed 208-byte region [fff00000c11a6dc0, fff00000c11a6e90) [ 27.375182] [ 27.375233] The buggy address belongs to the physical page: [ 27.375924] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1011a6 [ 27.376276] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 27.377121] page_type: f5(slab) [ 27.377324] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 27.377752] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 27.378263] page dumped because: kasan: bad access detected [ 27.378409] [ 27.378525] Memory state around the buggy address: [ 27.379028] fff00000c11a6c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.379184] fff00000c11a6d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 27.379343] >fff00000c11a6d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 27.379655] ^ [ 27.380119] fff00000c11a6e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.380315] fff00000c11a6e80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.380443] ==================================================================
[ 12.266507] ================================================================== [ 12.267793] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.268478] Read of size 1 at addr ffff888101b4cb40 by task kunit_try_catch/232 [ 12.269427] [ 12.269881] CPU: 0 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250605 #1 PREEMPT(voluntary) [ 12.269996] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.270010] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.270033] Call Trace: [ 12.270046] <TASK> [ 12.270063] dump_stack_lvl+0x73/0xb0 [ 12.270093] print_report+0xd1/0x650 [ 12.270115] ? __virt_addr_valid+0x1db/0x2d0 [ 12.270140] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.270164] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.270187] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.270213] kasan_report+0x141/0x180 [ 12.270235] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.270263] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.270288] __kasan_check_byte+0x3d/0x50 [ 12.270310] kmem_cache_destroy+0x25/0x1d0 [ 12.270333] kmem_cache_double_destroy+0x1bf/0x380 [ 12.270358] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.270382] ? finish_task_switch.isra.0+0x153/0x700 [ 12.270405] ? __switch_to+0x47/0xf50 [ 12.270434] ? __pfx_read_tsc+0x10/0x10 [ 12.270456] ? ktime_get_ts64+0x86/0x230 [ 12.270481] kunit_try_run_case+0x1a5/0x480 [ 12.270504] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.270523] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.270550] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.270574] ? __kthread_parkme+0x82/0x180 [ 12.270594] ? preempt_count_sub+0x50/0x80 [ 12.270761] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.270792] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.270818] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.270856] kthread+0x337/0x6f0 [ 12.270874] ? trace_preempt_on+0x20/0xc0 [ 12.270964] ? __pfx_kthread+0x10/0x10 [ 12.270987] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.271009] ? calculate_sigpending+0x7b/0xa0 [ 12.271034] ? __pfx_kthread+0x10/0x10 [ 12.271055] ret_from_fork+0x116/0x1d0 [ 12.271074] ? __pfx_kthread+0x10/0x10 [ 12.271094] ret_from_fork_asm+0x1a/0x30 [ 12.271125] </TASK> [ 12.271135] [ 12.287394] Allocated by task 232: [ 12.287716] kasan_save_stack+0x45/0x70 [ 12.287867] kasan_save_track+0x18/0x40 [ 12.288360] kasan_save_alloc_info+0x3b/0x50 [ 12.288804] __kasan_slab_alloc+0x91/0xa0 [ 12.289255] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.289423] __kmem_cache_create_args+0x169/0x240 [ 12.289587] kmem_cache_double_destroy+0xd5/0x380 [ 12.290173] kunit_try_run_case+0x1a5/0x480 [ 12.290571] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.291174] kthread+0x337/0x6f0 [ 12.291452] ret_from_fork+0x116/0x1d0 [ 12.291822] ret_from_fork_asm+0x1a/0x30 [ 12.292265] [ 12.292409] Freed by task 232: [ 12.292565] kasan_save_stack+0x45/0x70 [ 12.293047] kasan_save_track+0x18/0x40 [ 12.293189] kasan_save_free_info+0x3f/0x60 [ 12.293335] __kasan_slab_free+0x56/0x70 [ 12.293472] kmem_cache_free+0x249/0x420 [ 12.293609] slab_kmem_cache_release+0x2e/0x40 [ 12.294160] kmem_cache_release+0x16/0x20 [ 12.294552] kobject_put+0x181/0x450 [ 12.294983] sysfs_slab_release+0x16/0x20 [ 12.295376] kmem_cache_destroy+0xf0/0x1d0 [ 12.295778] kmem_cache_double_destroy+0x14e/0x380 [ 12.296409] kunit_try_run_case+0x1a5/0x480 [ 12.296768] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.297033] kthread+0x337/0x6f0 [ 12.297392] ret_from_fork+0x116/0x1d0 [ 12.297732] ret_from_fork_asm+0x1a/0x30 [ 12.298027] [ 12.298302] The buggy address belongs to the object at ffff888101b4cb40 [ 12.298302] which belongs to the cache kmem_cache of size 208 [ 12.299090] The buggy address is located 0 bytes inside of [ 12.299090] freed 208-byte region [ffff888101b4cb40, ffff888101b4cc10) [ 12.299670] [ 12.299745] The buggy address belongs to the physical page: [ 12.299926] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101b4c [ 12.300927] flags: 0x200000000000000(node=0|zone=2) [ 12.301448] page_type: f5(slab) [ 12.301800] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.302582] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.303163] page dumped because: kasan: bad access detected [ 12.303501] [ 12.303572] Memory state around the buggy address: [ 12.303763] ffff888101b4ca00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.304383] ffff888101b4ca80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.304598] >ffff888101b4cb00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 12.305434] ^ [ 12.306109] ffff888101b4cb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.306583] ffff888101b4cc00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.307110] ==================================================================