Date
June 2, 2025, 2:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.768102] ================================================================== [ 20.768896] BUG: KASAN: double-free in kmem_cache_double_free+0x19c/0x3e0 [ 20.769379] Free of addr fff00000c6cf4000 by task kunit_try_catch/196 [ 20.769900] [ 20.770099] CPU: 0 UID: 0 PID: 196 Comm: kunit_try_catch Tainted: G B N 6.12.32-rc1 #1 [ 20.770223] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.770272] Hardware name: linux,dummy-virt (DT) [ 20.770316] Call trace: [ 20.770343] dump_backtrace+0x9c/0x128 [ 20.770395] show_stack+0x20/0x38 [ 20.770438] dump_stack_lvl+0x8c/0xd0 [ 20.770485] print_report+0x118/0x5f0 [ 20.770530] kasan_report_invalid_free+0xc0/0xe8 [ 20.770575] check_slab_allocation+0xd4/0x108 [ 20.770619] __kasan_slab_pre_free+0x2c/0x48 [ 20.770663] kmem_cache_free+0xf0/0x460 [ 20.770706] kmem_cache_double_free+0x19c/0x3e0 [ 20.770754] kunit_try_run_case+0x170/0x3f0 [ 20.770798] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.770848] kthread+0x24c/0x2d0 [ 20.770891] ret_from_fork+0x10/0x20 [ 20.770938] [ 20.775907] Allocated by task 196: [ 20.776270] kasan_save_stack+0x3c/0x68 [ 20.776651] kasan_save_track+0x20/0x40 [ 20.776868] kasan_save_alloc_info+0x40/0x58 [ 20.777056] __kasan_slab_alloc+0xa8/0xb0 [ 20.777218] kmem_cache_alloc_noprof+0xf8/0x300 [ 20.777707] kmem_cache_double_free+0x130/0x3e0 [ 20.777997] kunit_try_run_case+0x170/0x3f0 [ 20.778269] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.778718] kthread+0x24c/0x2d0 [ 20.778957] ret_from_fork+0x10/0x20 [ 20.779612] [ 20.779889] Freed by task 196: [ 20.780125] kasan_save_stack+0x3c/0x68 [ 20.780429] kasan_save_track+0x20/0x40 [ 20.780619] kasan_save_free_info+0x4c/0x78 [ 20.780907] __kasan_slab_free+0x6c/0x98 [ 20.781162] kmem_cache_free+0x118/0x460 [ 20.781421] kmem_cache_double_free+0x144/0x3e0 [ 20.781691] kunit_try_run_case+0x170/0x3f0 [ 20.781948] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.782403] kthread+0x24c/0x2d0 [ 20.782661] ret_from_fork+0x10/0x20 [ 20.782937] [ 20.783113] The buggy address belongs to the object at fff00000c6cf4000 [ 20.783113] which belongs to the cache test_cache of size 200 [ 20.783940] The buggy address is located 0 bytes inside of [ 20.783940] 200-byte region [fff00000c6cf4000, fff00000c6cf40c8) [ 20.784561] [ 20.784754] The buggy address belongs to the physical page: [ 20.784969] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106cf4 [ 20.785426] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.785749] page_type: f5(slab) [ 20.786014] raw: 0bfffe0000000000 fff00000c5a6f8c0 dead000000000122 0000000000000000 [ 20.786426] raw: 0000000000000000 00000000800f000f 00000001f5000000 0000000000000000 [ 20.786785] page dumped because: kasan: bad access detected [ 20.787385] [ 20.787501] Memory state around the buggy address: [ 20.787679] fff00000c6cf3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.787922] fff00000c6cf3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.788148] >fff00000c6cf4000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.788381] ^ [ 20.788533] fff00000c6cf4080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 20.788880] fff00000c6cf4100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.789199] ==================================================================
[ 12.778022] ================================================================== [ 12.778652] BUG: KASAN: double-free in kmem_cache_double_free+0x1e6/0x490 [ 12.778912] Free of addr ffff888102626000 by task kunit_try_catch/214 [ 12.779161] [ 12.779348] CPU: 0 UID: 0 PID: 214 Comm: kunit_try_catch Tainted: G B N 6.12.32-rc1 #1 [ 12.779800] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.779839] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.779883] Call Trace: [ 12.779910] <TASK> [ 12.779944] dump_stack_lvl+0x73/0xb0 [ 12.780005] print_report+0xd1/0x640 [ 12.780049] ? __virt_addr_valid+0x1db/0x2d0 [ 12.780097] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.780133] ? kmem_cache_double_free+0x1e6/0x490 [ 12.780189] kasan_report_invalid_free+0xfc/0x120 [ 12.780373] ? kmem_cache_double_free+0x1e6/0x490 [ 12.780426] ? kmem_cache_double_free+0x1e6/0x490 [ 12.780470] check_slab_allocation+0x101/0x130 [ 12.780516] __kasan_slab_pre_free+0x28/0x40 [ 12.780551] kmem_cache_free+0xee/0x400 [ 12.780573] ? kmem_cache_alloc_noprof+0x107/0x350 [ 12.780594] ? kmem_cache_double_free+0x1e6/0x490 [ 12.780617] kmem_cache_double_free+0x1e6/0x490 [ 12.780638] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.780681] ? finish_task_switch.isra.0+0x153/0x700 [ 12.780705] ? __switch_to+0x5d9/0xf60 [ 12.780733] ? __pfx_read_tsc+0x10/0x10 [ 12.780752] ? ktime_get_ts64+0x84/0x230 [ 12.780777] kunit_try_run_case+0x1a6/0x480 [ 12.780800] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.780819] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 12.780840] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.780863] ? __kthread_parkme+0x82/0x160 [ 12.780882] ? preempt_count_sub+0x50/0x80 [ 12.780903] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.780921] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.780945] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.780969] kthread+0x257/0x310 [ 12.780986] ? __pfx_kthread+0x10/0x10 [ 12.781004] ret_from_fork+0x41/0x80 [ 12.781022] ? __pfx_kthread+0x10/0x10 [ 12.781039] ret_from_fork_asm+0x1a/0x30 [ 12.781082] </TASK> [ 12.781217] [ 12.792803] Allocated by task 214: [ 12.793131] kasan_save_stack+0x45/0x70 [ 12.793579] kasan_save_track+0x18/0x40 [ 12.793765] kasan_save_alloc_info+0x3b/0x50 [ 12.794126] __kasan_slab_alloc+0x91/0xa0 [ 12.794388] kmem_cache_alloc_noprof+0x107/0x350 [ 12.795075] kmem_cache_double_free+0x150/0x490 [ 12.795515] kunit_try_run_case+0x1a6/0x480 [ 12.795874] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.796221] kthread+0x257/0x310 [ 12.796570] ret_from_fork+0x41/0x80 [ 12.796817] ret_from_fork_asm+0x1a/0x30 [ 12.797334] [ 12.797503] Freed by task 214: [ 12.797735] kasan_save_stack+0x45/0x70 [ 12.797999] kasan_save_track+0x18/0x40 [ 12.798447] kasan_save_free_info+0x3f/0x60 [ 12.799186] __kasan_slab_free+0x56/0x70 [ 12.799361] kmem_cache_free+0x120/0x400 [ 12.799911] kmem_cache_double_free+0x16b/0x490 [ 12.800498] kunit_try_run_case+0x1a6/0x480 [ 12.800751] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.801130] kthread+0x257/0x310 [ 12.801295] ret_from_fork+0x41/0x80 [ 12.801601] ret_from_fork_asm+0x1a/0x30 [ 12.801804] [ 12.801942] The buggy address belongs to the object at ffff888102626000 [ 12.801942] which belongs to the cache test_cache of size 200 [ 12.802788] The buggy address is located 0 bytes inside of [ 12.802788] 200-byte region [ffff888102626000, ffff8881026260c8) [ 12.803756] [ 12.803988] The buggy address belongs to the physical page: [ 12.804521] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102626 [ 12.805116] flags: 0x200000000000000(node=0|zone=2) [ 12.805785] page_type: f5(slab) [ 12.806395] raw: 0200000000000000 ffff888102621140 dead000000000122 0000000000000000 [ 12.806830] raw: 0000000000000000 00000000800f000f 00000001f5000000 0000000000000000 [ 12.807268] page dumped because: kasan: bad access detected [ 12.807510] [ 12.807671] Memory state around the buggy address: [ 12.807863] ffff888102625f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.808626] ffff888102625f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.809091] >ffff888102626000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.809728] ^ [ 12.809868] ffff888102626080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.810324] ffff888102626100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.810923] ==================================================================