Date
July 1, 2025, 3:08 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.790435] ================================================================== [ 17.790523] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 17.790759] Free of addr fff00000c57d9000 by task kunit_try_catch/210 [ 17.790830] [ 17.790874] CPU: 1 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 17.790965] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.790991] Hardware name: linux,dummy-virt (DT) [ 17.791037] Call trace: [ 17.791077] show_stack+0x20/0x38 (C) [ 17.791134] dump_stack_lvl+0x8c/0xd0 [ 17.791185] print_report+0x118/0x608 [ 17.791234] kasan_report_invalid_free+0xc0/0xe8 [ 17.791282] check_slab_allocation+0xd4/0x108 [ 17.791333] __kasan_slab_pre_free+0x2c/0x48 [ 17.791380] kmem_cache_free+0xf0/0x468 [ 17.791428] kmem_cache_double_free+0x190/0x3c8 [ 17.791477] kunit_try_run_case+0x170/0x3f0 [ 17.791529] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.792197] kthread+0x328/0x630 [ 17.792513] ret_from_fork+0x10/0x20 [ 17.792603] [ 17.792862] Allocated by task 210: [ 17.793025] kasan_save_stack+0x3c/0x68 [ 17.793076] kasan_save_track+0x20/0x40 [ 17.793121] kasan_save_alloc_info+0x40/0x58 [ 17.793169] __kasan_slab_alloc+0xa8/0xb0 [ 17.793331] kmem_cache_alloc_noprof+0x10c/0x398 [ 17.793613] kmem_cache_double_free+0x12c/0x3c8 [ 17.793696] kunit_try_run_case+0x170/0x3f0 [ 17.793739] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.794009] kthread+0x328/0x630 [ 17.794144] ret_from_fork+0x10/0x20 [ 17.794288] [ 17.794329] Freed by task 210: [ 17.794517] kasan_save_stack+0x3c/0x68 [ 17.794862] kasan_save_track+0x20/0x40 [ 17.794986] kasan_save_free_info+0x4c/0x78 [ 17.795069] __kasan_slab_free+0x6c/0x98 [ 17.795148] kmem_cache_free+0x260/0x468 [ 17.795362] kmem_cache_double_free+0x140/0x3c8 [ 17.795701] kunit_try_run_case+0x170/0x3f0 [ 17.795861] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.795957] kthread+0x328/0x630 [ 17.795993] ret_from_fork+0x10/0x20 [ 17.796060] [ 17.796264] The buggy address belongs to the object at fff00000c57d9000 [ 17.796264] which belongs to the cache test_cache of size 200 [ 17.796518] The buggy address is located 0 bytes inside of [ 17.796518] 200-byte region [fff00000c57d9000, fff00000c57d90c8) [ 17.796758] [ 17.796923] The buggy address belongs to the physical page: [ 17.797069] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1057d9 [ 17.797155] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.797489] page_type: f5(slab) [ 17.797673] raw: 0bfffe0000000000 fff00000c57d5140 dead000000000122 0000000000000000 [ 17.797779] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 17.797882] page dumped because: kasan: bad access detected [ 17.797936] [ 17.797954] Memory state around the buggy address: [ 17.797989] fff00000c57d8f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.798040] fff00000c57d8f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.798309] >fff00000c57d9000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.798471] ^ [ 17.798514] fff00000c57d9080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 17.798700] fff00000c57d9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.798774] ==================================================================
[ 12.292388] ================================================================== [ 12.293178] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 12.293854] Free of addr ffff8881033b6000 by task kunit_try_catch/226 [ 12.294433] [ 12.294650] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.294700] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.294712] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.294733] Call Trace: [ 12.294747] <TASK> [ 12.294766] dump_stack_lvl+0x73/0xb0 [ 12.294799] print_report+0xd1/0x650 [ 12.294822] ? __virt_addr_valid+0x1db/0x2d0 [ 12.294847] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.294867] ? kmem_cache_double_free+0x1e5/0x480 [ 12.294892] kasan_report_invalid_free+0x10a/0x130 [ 12.294915] ? kmem_cache_double_free+0x1e5/0x480 [ 12.294940] ? kmem_cache_double_free+0x1e5/0x480 [ 12.294962] check_slab_allocation+0x101/0x130 [ 12.294983] __kasan_slab_pre_free+0x28/0x40 [ 12.295002] kmem_cache_free+0xed/0x420 [ 12.295032] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.295052] ? kmem_cache_double_free+0x1e5/0x480 [ 12.295077] kmem_cache_double_free+0x1e5/0x480 [ 12.295100] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.295122] ? finish_task_switch.isra.0+0x153/0x700 [ 12.295145] ? __switch_to+0x47/0xf50 [ 12.295173] ? __pfx_read_tsc+0x10/0x10 [ 12.295194] ? ktime_get_ts64+0x86/0x230 [ 12.295218] kunit_try_run_case+0x1a5/0x480 [ 12.295244] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.295265] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.295287] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.295308] ? __kthread_parkme+0x82/0x180 [ 12.295328] ? preempt_count_sub+0x50/0x80 [ 12.295351] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.295374] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.295395] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.295417] kthread+0x337/0x6f0 [ 12.295435] ? trace_preempt_on+0x20/0xc0 [ 12.295458] ? __pfx_kthread+0x10/0x10 [ 12.295477] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.295497] ? calculate_sigpending+0x7b/0xa0 [ 12.295520] ? __pfx_kthread+0x10/0x10 [ 12.295541] ret_from_fork+0x116/0x1d0 [ 12.295558] ? __pfx_kthread+0x10/0x10 [ 12.295577] ret_from_fork_asm+0x1a/0x30 [ 12.295607] </TASK> [ 12.295618] [ 12.309375] Allocated by task 226: [ 12.309523] kasan_save_stack+0x45/0x70 [ 12.310012] kasan_save_track+0x18/0x40 [ 12.310377] kasan_save_alloc_info+0x3b/0x50 [ 12.310803] __kasan_slab_alloc+0x91/0xa0 [ 12.311220] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.311631] kmem_cache_double_free+0x14f/0x480 [ 12.312162] kunit_try_run_case+0x1a5/0x480 [ 12.312548] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.313019] kthread+0x337/0x6f0 [ 12.313159] ret_from_fork+0x116/0x1d0 [ 12.313290] ret_from_fork_asm+0x1a/0x30 [ 12.313428] [ 12.313496] Freed by task 226: [ 12.313607] kasan_save_stack+0x45/0x70 [ 12.314083] kasan_save_track+0x18/0x40 [ 12.314428] kasan_save_free_info+0x3f/0x60 [ 12.314884] __kasan_slab_free+0x56/0x70 [ 12.315361] kmem_cache_free+0x249/0x420 [ 12.315762] kmem_cache_double_free+0x16a/0x480 [ 12.316186] kunit_try_run_case+0x1a5/0x480 [ 12.316573] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.317183] kthread+0x337/0x6f0 [ 12.317486] ret_from_fork+0x116/0x1d0 [ 12.317866] ret_from_fork_asm+0x1a/0x30 [ 12.318103] [ 12.318178] The buggy address belongs to the object at ffff8881033b6000 [ 12.318178] which belongs to the cache test_cache of size 200 [ 12.318529] The buggy address is located 0 bytes inside of [ 12.318529] 200-byte region [ffff8881033b6000, ffff8881033b60c8) [ 12.319704] [ 12.319937] The buggy address belongs to the physical page: [ 12.320661] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1033b6 [ 12.321369] flags: 0x200000000000000(node=0|zone=2) [ 12.321870] page_type: f5(slab) [ 12.322286] raw: 0200000000000000 ffff888101cf3dc0 dead000000000122 0000000000000000 [ 12.322999] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 12.323341] page dumped because: kasan: bad access detected [ 12.323514] [ 12.323586] Memory state around the buggy address: [ 12.323794] ffff8881033b5f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.324515] ffff8881033b5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.325297] >ffff8881033b6000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.325771] ^ [ 12.326125] ffff8881033b6080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.326737] ffff8881033b6100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.327243] ==================================================================