Date
June 2, 2025, 2:10 p.m.
Environment | |
---|---|
qemu-arm64 |
[ 20.345444] ================================================================== [ 20.346179] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 20.347351] Free of addr fff00000c5bb2280 by task kunit_try_catch/179 [ 20.347740] [ 20.347972] CPU: 0 UID: 0 PID: 179 Comm: kunit_try_catch Tainted: G B N 6.12.32-rc1 #1 [ 20.348153] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.348228] Hardware name: linux,dummy-virt (DT) [ 20.348323] Call trace: [ 20.348380] dump_backtrace+0x9c/0x128 [ 20.348480] show_stack+0x20/0x38 [ 20.348553] dump_stack_lvl+0x8c/0xd0 [ 20.348633] print_report+0x118/0x5f0 [ 20.348712] kasan_report_invalid_free+0xc0/0xe8 [ 20.348795] check_slab_allocation+0xd4/0x108 [ 20.348891] __kasan_slab_pre_free+0x2c/0x48 [ 20.348973] kfree+0xe8/0x3b8 [ 20.349052] kfree_sensitive+0x3c/0xb0 [ 20.349130] kmalloc_double_kzfree+0x174/0x318 [ 20.349216] kunit_try_run_case+0x170/0x3f0 [ 20.350580] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.350693] kthread+0x24c/0x2d0 [ 20.350743] ret_from_fork+0x10/0x20 [ 20.350795] [ 20.356023] Allocated by task 179: [ 20.356491] kasan_save_stack+0x3c/0x68 [ 20.356998] kasan_save_track+0x20/0x40 [ 20.358788] kasan_save_alloc_info+0x40/0x58 [ 20.359705] __kasan_kmalloc+0xd4/0xd8 [ 20.360177] __kmalloc_cache_noprof+0x154/0x320 [ 20.360703] kmalloc_double_kzfree+0xb8/0x318 [ 20.361121] kunit_try_run_case+0x170/0x3f0 [ 20.361469] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.362010] kthread+0x24c/0x2d0 [ 20.362371] ret_from_fork+0x10/0x20 [ 20.362804] [ 20.363077] Freed by task 179: [ 20.363919] kasan_save_stack+0x3c/0x68 [ 20.364301] kasan_save_track+0x20/0x40 [ 20.364568] kasan_save_free_info+0x4c/0x78 [ 20.364883] __kasan_slab_free+0x6c/0x98 [ 20.365190] kfree+0x110/0x3b8 [ 20.365605] kfree_sensitive+0x80/0xb0 [ 20.366092] kmalloc_double_kzfree+0x120/0x318 [ 20.366626] kunit_try_run_case+0x170/0x3f0 [ 20.367060] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.368127] kthread+0x24c/0x2d0 [ 20.368493] ret_from_fork+0x10/0x20 [ 20.368917] [ 20.369183] The buggy address belongs to the object at fff00000c5bb2280 [ 20.369183] which belongs to the cache kmalloc-16 of size 16 [ 20.370132] The buggy address is located 0 bytes inside of [ 20.370132] 16-byte region [fff00000c5bb2280, fff00000c5bb2290) [ 20.370970] [ 20.371651] The buggy address belongs to the physical page: [ 20.372119] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105bb2 [ 20.372900] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.373577] page_type: f5(slab) [ 20.373832] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 20.374935] raw: 0000000000000000 0000000080800080 00000001f5000000 0000000000000000 [ 20.375742] page dumped because: kasan: bad access detected [ 20.376160] [ 20.376816] Memory state around the buggy address: [ 20.377181] fff00000c5bb2180: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 20.378105] fff00000c5bb2200: fa fb fc fc 00 04 fc fc fa fb fc fc fa fb fc fc [ 20.378792] >fff00000c5bb2280: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.379458] ^ [ 20.379934] fff00000c5bb2300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.380677] fff00000c5bb2380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.381533] ==================================================================