Date
July 5, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.566750] ================================================================== [ 19.566834] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 19.566910] Read of size 1 at addr fff00000c19e6dc0 by task kunit_try_catch/215 [ 19.566961] [ 19.567007] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 19.567093] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.567122] Hardware name: linux,dummy-virt (DT) [ 19.567171] Call trace: [ 19.567196] show_stack+0x20/0x38 (C) [ 19.567250] dump_stack_lvl+0x8c/0xd0 [ 19.567300] print_report+0x118/0x608 [ 19.567345] kasan_report+0xdc/0x128 [ 19.567390] __kasan_check_byte+0x54/0x70 [ 19.567435] kmem_cache_destroy+0x34/0x218 [ 19.567481] kmem_cache_double_destroy+0x174/0x300 [ 19.567530] kunit_try_run_case+0x170/0x3f0 [ 19.567579] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.567631] kthread+0x328/0x630 [ 19.567675] ret_from_fork+0x10/0x20 [ 19.567722] [ 19.567742] Allocated by task 215: [ 19.567773] kasan_save_stack+0x3c/0x68 [ 19.567814] kasan_save_track+0x20/0x40 [ 19.567852] kasan_save_alloc_info+0x40/0x58 [ 19.567926] __kasan_slab_alloc+0xa8/0xb0 [ 19.567985] kmem_cache_alloc_noprof+0x10c/0x398 [ 19.568029] __kmem_cache_create_args+0x178/0x280 [ 19.568067] kmem_cache_double_destroy+0xc0/0x300 [ 19.568106] kunit_try_run_case+0x170/0x3f0 [ 19.568143] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.568195] kthread+0x328/0x630 [ 19.568227] ret_from_fork+0x10/0x20 [ 19.568263] [ 19.568282] Freed by task 215: [ 19.568308] kasan_save_stack+0x3c/0x68 [ 19.568345] kasan_save_track+0x20/0x40 [ 19.568381] kasan_save_free_info+0x4c/0x78 [ 19.568420] __kasan_slab_free+0x6c/0x98 [ 19.568458] kmem_cache_free+0x260/0x468 [ 19.568495] slab_kmem_cache_release+0x38/0x50 [ 19.568533] kmem_cache_release+0x1c/0x30 [ 19.568569] kobject_put+0x17c/0x420 [ 19.568605] sysfs_slab_release+0x1c/0x30 [ 19.568642] kmem_cache_destroy+0x118/0x218 [ 19.568679] kmem_cache_double_destroy+0x128/0x300 [ 19.568719] kunit_try_run_case+0x170/0x3f0 [ 19.568755] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.568798] kthread+0x328/0x630 [ 19.568829] ret_from_fork+0x10/0x20 [ 19.568865] [ 19.568884] The buggy address belongs to the object at fff00000c19e6dc0 [ 19.568884] which belongs to the cache kmem_cache of size 208 [ 19.568941] The buggy address is located 0 bytes inside of [ 19.568941] freed 208-byte region [fff00000c19e6dc0, fff00000c19e6e90) [ 19.569001] [ 19.569023] The buggy address belongs to the physical page: [ 19.569057] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1019e6 [ 19.569111] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.569172] page_type: f5(slab) [ 19.569214] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 19.569264] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.569305] page dumped because: kasan: bad access detected [ 19.569336] [ 19.569356] Memory state around the buggy address: [ 19.569389] fff00000c19e6c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 19.569431] fff00000c19e6d00: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 19.569474] >fff00000c19e6d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 19.569513] ^ [ 19.569549] fff00000c19e6e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.569591] fff00000c19e6e80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.569629] ==================================================================
[ 14.547621] ================================================================== [ 14.548139] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 14.549545] Read of size 1 at addr ffff888101a64c80 by task kunit_try_catch/233 [ 14.550464] [ 14.550683] CPU: 1 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 14.550895] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.550914] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.550941] Call Trace: [ 14.550959] <TASK> [ 14.550983] dump_stack_lvl+0x73/0xb0 [ 14.551026] print_report+0xd1/0x650 [ 14.551054] ? __virt_addr_valid+0x1db/0x2d0 [ 14.551190] ? kmem_cache_double_destroy+0x1bf/0x380 [ 14.551223] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.551273] ? kmem_cache_double_destroy+0x1bf/0x380 [ 14.551303] kasan_report+0x141/0x180 [ 14.551329] ? kmem_cache_double_destroy+0x1bf/0x380 [ 14.551359] ? kmem_cache_double_destroy+0x1bf/0x380 [ 14.551388] __kasan_check_byte+0x3d/0x50 [ 14.551414] kmem_cache_destroy+0x25/0x1d0 [ 14.551442] kmem_cache_double_destroy+0x1bf/0x380 [ 14.551470] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 14.551497] ? finish_task_switch.isra.0+0x153/0x700 [ 14.551524] ? __switch_to+0x47/0xf50 [ 14.551558] ? __pfx_read_tsc+0x10/0x10 [ 14.551583] ? ktime_get_ts64+0x86/0x230 [ 14.551611] kunit_try_run_case+0x1a5/0x480 [ 14.551642] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.551667] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.551697] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.551723] ? __kthread_parkme+0x82/0x180 [ 14.551748] ? preempt_count_sub+0x50/0x80 [ 14.551774] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.551817] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.551843] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.551869] kthread+0x337/0x6f0 [ 14.551891] ? trace_preempt_on+0x20/0xc0 [ 14.551920] ? __pfx_kthread+0x10/0x10 [ 14.551943] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.551968] ? calculate_sigpending+0x7b/0xa0 [ 14.551996] ? __pfx_kthread+0x10/0x10 [ 14.552021] ret_from_fork+0x116/0x1d0 [ 14.552042] ? __pfx_kthread+0x10/0x10 [ 14.552065] ret_from_fork_asm+0x1a/0x30 [ 14.552101] </TASK> [ 14.552116] [ 14.563579] Allocated by task 233: [ 14.563750] kasan_save_stack+0x45/0x70 [ 14.563941] kasan_save_track+0x18/0x40 [ 14.564098] kasan_save_alloc_info+0x3b/0x50 [ 14.564334] __kasan_slab_alloc+0x91/0xa0 [ 14.564503] kmem_cache_alloc_noprof+0x123/0x3f0 [ 14.564707] __kmem_cache_create_args+0x169/0x240 [ 14.564910] kmem_cache_double_destroy+0xd5/0x380 [ 14.565103] kunit_try_run_case+0x1a5/0x480 [ 14.565612] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.565951] kthread+0x337/0x6f0 [ 14.566886] ret_from_fork+0x116/0x1d0 [ 14.567612] ret_from_fork_asm+0x1a/0x30 [ 14.568561] [ 14.569283] Freed by task 233: [ 14.570028] kasan_save_stack+0x45/0x70 [ 14.570217] kasan_save_track+0x18/0x40 [ 14.570376] kasan_save_free_info+0x3f/0x60 [ 14.570545] __kasan_slab_free+0x56/0x70 [ 14.570704] kmem_cache_free+0x249/0x420 [ 14.572231] slab_kmem_cache_release+0x2e/0x40 [ 14.573966] kmem_cache_release+0x16/0x20 [ 14.574654] kobject_put+0x181/0x450 [ 14.574892] sysfs_slab_release+0x16/0x20 [ 14.575310] kmem_cache_destroy+0xf0/0x1d0 [ 14.575611] kmem_cache_double_destroy+0x14e/0x380 [ 14.575828] kunit_try_run_case+0x1a5/0x480 [ 14.576088] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.576450] kthread+0x337/0x6f0 [ 14.576611] ret_from_fork+0x116/0x1d0 [ 14.577029] ret_from_fork_asm+0x1a/0x30 [ 14.577211] [ 14.577332] The buggy address belongs to the object at ffff888101a64c80 [ 14.577332] which belongs to the cache kmem_cache of size 208 [ 14.578309] The buggy address is located 0 bytes inside of [ 14.578309] freed 208-byte region [ffff888101a64c80, ffff888101a64d50) [ 14.578815] [ 14.578937] The buggy address belongs to the physical page: [ 14.579247] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101a64 [ 14.579718] flags: 0x200000000000000(node=0|zone=2) [ 14.579967] page_type: f5(slab) [ 14.580315] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 14.580745] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 14.581122] page dumped because: kasan: bad access detected [ 14.581521] [ 14.581603] Memory state around the buggy address: [ 14.582195] ffff888101a64b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 14.582694] ffff888101a64c00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.583106] >ffff888101a64c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 14.583592] ^ [ 14.583811] ffff888101a64d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 14.584347] ffff888101a64d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.584731] ==================================================================