Date
June 19, 2025, 12:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.482149] ================================================================== [ 31.482448] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 31.482653] Free of addr fff00000c774d000 by task kunit_try_catch/220 [ 31.482761] [ 31.482867] CPU: 1 UID: 0 PID: 220 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250619 #1 PREEMPT [ 31.483224] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.483329] Hardware name: linux,dummy-virt (DT) [ 31.483441] Call trace: [ 31.483530] show_stack+0x20/0x38 (C) [ 31.483659] dump_stack_lvl+0x8c/0xd0 [ 31.483831] print_report+0x118/0x608 [ 31.483958] kasan_report_invalid_free+0xc0/0xe8 [ 31.484107] check_slab_allocation+0xd4/0x108 [ 31.484232] __kasan_slab_pre_free+0x2c/0x48 [ 31.484336] kmem_cache_free+0xf0/0x468 [ 31.484446] kmem_cache_double_free+0x190/0x3c8 [ 31.484579] kunit_try_run_case+0x170/0x3f0 [ 31.484745] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.484918] kthread+0x328/0x630 [ 31.485051] ret_from_fork+0x10/0x20 [ 31.485190] [ 31.485230] Allocated by task 220: [ 31.485302] kasan_save_stack+0x3c/0x68 [ 31.485423] kasan_save_track+0x20/0x40 [ 31.485515] kasan_save_alloc_info+0x40/0x58 [ 31.485602] __kasan_slab_alloc+0xa8/0xb0 [ 31.485707] kmem_cache_alloc_noprof+0x10c/0x398 [ 31.485784] kmem_cache_double_free+0x12c/0x3c8 [ 31.485867] kunit_try_run_case+0x170/0x3f0 [ 31.485965] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.486101] kthread+0x328/0x630 [ 31.486267] ret_from_fork+0x10/0x20 [ 31.486370] [ 31.486411] Freed by task 220: [ 31.486475] kasan_save_stack+0x3c/0x68 [ 31.486594] kasan_save_track+0x20/0x40 [ 31.486700] kasan_save_free_info+0x4c/0x78 [ 31.486787] __kasan_slab_free+0x6c/0x98 [ 31.486885] kmem_cache_free+0x260/0x468 [ 31.486992] kmem_cache_double_free+0x140/0x3c8 [ 31.487092] kunit_try_run_case+0x170/0x3f0 [ 31.487182] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.487285] kthread+0x328/0x630 [ 31.487367] ret_from_fork+0x10/0x20 [ 31.487458] [ 31.487519] The buggy address belongs to the object at fff00000c774d000 [ 31.487519] which belongs to the cache test_cache of size 200 [ 31.487679] The buggy address is located 0 bytes inside of [ 31.487679] 200-byte region [fff00000c774d000, fff00000c774d0c8) [ 31.487816] [ 31.487867] The buggy address belongs to the physical page: [ 31.487960] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10774d [ 31.488126] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.488283] page_type: f5(slab) [ 31.488426] raw: 0bfffe0000000000 fff00000c1112b40 dead000000000122 0000000000000000 [ 31.488560] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 31.488656] page dumped because: kasan: bad access detected [ 31.488726] [ 31.488768] Memory state around the buggy address: [ 31.488881] fff00000c774cf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.488990] fff00000c774cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.489095] >fff00000c774d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.489204] ^ [ 31.489305] fff00000c774d080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 31.489445] fff00000c774d100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.489655] ==================================================================
[ 27.844709] ================================================================== [ 27.846184] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 27.846724] Free of addr ffff88810376a000 by task kunit_try_catch/238 [ 27.847560] [ 27.847957] CPU: 1 UID: 0 PID: 238 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250619 #1 PREEMPT(voluntary) [ 27.848056] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.848072] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.852578] Call Trace: [ 27.852642] <TASK> [ 27.852671] dump_stack_lvl+0x73/0xb0 [ 27.852737] print_report+0xd1/0x650 [ 27.852764] ? __virt_addr_valid+0x1db/0x2d0 [ 27.852792] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.852819] ? kmem_cache_double_free+0x1e5/0x480 [ 27.852857] kasan_report_invalid_free+0x10a/0x130 [ 27.852884] ? kmem_cache_double_free+0x1e5/0x480 [ 27.852935] ? kmem_cache_double_free+0x1e5/0x480 [ 27.852962] check_slab_allocation+0x101/0x130 [ 27.853012] __kasan_slab_pre_free+0x28/0x40 [ 27.853035] kmem_cache_free+0xed/0x420 [ 27.853058] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 27.853080] ? kmem_cache_double_free+0x1e5/0x480 [ 27.853118] kmem_cache_double_free+0x1e5/0x480 [ 27.853146] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 27.853170] ? finish_task_switch.isra.0+0x153/0x700 [ 27.853195] ? __switch_to+0x47/0xf50 [ 27.853225] ? __pfx_read_tsc+0x10/0x10 [ 27.853249] ? ktime_get_ts64+0x86/0x230 [ 27.853276] kunit_try_run_case+0x1a5/0x480 [ 27.853306] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.853329] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.853354] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.853379] ? __kthread_parkme+0x82/0x180 [ 27.853402] ? preempt_count_sub+0x50/0x80 [ 27.853426] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.853451] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.853474] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.853498] kthread+0x337/0x6f0 [ 27.853519] ? trace_preempt_on+0x20/0xc0 [ 27.853544] ? __pfx_kthread+0x10/0x10 [ 27.853566] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.853588] ? calculate_sigpending+0x7b/0xa0 [ 27.853614] ? __pfx_kthread+0x10/0x10 [ 27.853637] ret_from_fork+0x116/0x1d0 [ 27.853658] ? __pfx_kthread+0x10/0x10 [ 27.853679] ret_from_fork_asm+0x1a/0x30 [ 27.853712] </TASK> [ 27.853725] [ 27.864067] Allocated by task 238: [ 27.864511] kasan_save_stack+0x45/0x70 [ 27.864861] kasan_save_track+0x18/0x40 [ 27.865233] kasan_save_alloc_info+0x3b/0x50 [ 27.865360] __kasan_slab_alloc+0x91/0xa0 [ 27.865761] kmem_cache_alloc_noprof+0x123/0x3f0 [ 27.865978] kmem_cache_double_free+0x14f/0x480 [ 27.866268] kunit_try_run_case+0x1a5/0x480 [ 27.866789] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.867044] kthread+0x337/0x6f0 [ 27.867153] ret_from_fork+0x116/0x1d0 [ 27.867478] ret_from_fork_asm+0x1a/0x30 [ 27.867609] [ 27.867682] Freed by task 238: [ 27.867769] kasan_save_stack+0x45/0x70 [ 27.867873] kasan_save_track+0x18/0x40 [ 27.867970] kasan_save_free_info+0x3f/0x60 [ 27.868075] __kasan_slab_free+0x56/0x70 [ 27.868493] kmem_cache_free+0x249/0x420 [ 27.868721] kmem_cache_double_free+0x16a/0x480 [ 27.869005] kunit_try_run_case+0x1a5/0x480 [ 27.869436] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.869894] kthread+0x337/0x6f0 [ 27.870263] ret_from_fork+0x116/0x1d0 [ 27.870496] ret_from_fork_asm+0x1a/0x30 [ 27.870713] [ 27.870817] The buggy address belongs to the object at ffff88810376a000 [ 27.870817] which belongs to the cache test_cache of size 200 [ 27.871650] The buggy address is located 0 bytes inside of [ 27.871650] 200-byte region [ffff88810376a000, ffff88810376a0c8) [ 27.872422] [ 27.872583] The buggy address belongs to the physical page: [ 27.872850] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10376a [ 27.873164] flags: 0x200000000000000(node=0|zone=2) [ 27.873311] page_type: f5(slab) [ 27.873526] raw: 0200000000000000 ffff888101274dc0 dead000000000122 0000000000000000 [ 27.873795] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 27.874119] page dumped because: kasan: bad access detected [ 27.874276] [ 27.874335] Memory state around the buggy address: [ 27.874651] ffff888103769f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.875217] ffff888103769f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.875668] >ffff88810376a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.876262] ^ [ 27.876371] ffff88810376a080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 27.876642] ffff88810376a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.876997] ==================================================================