Date
May 12, 2025, 11:48 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.584929] ================================================================== [ 17.585093] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 17.585239] Free of addr fff00000c794a000 by task kunit_try_catch/209 [ 17.585332] [ 17.585413] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT [ 17.585605] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.585662] Hardware name: linux,dummy-virt (DT) [ 17.585733] Call trace: [ 17.585787] show_stack+0x20/0x38 (C) [ 17.586519] dump_stack_lvl+0x8c/0xd0 [ 17.586770] print_report+0x118/0x608 [ 17.586886] kasan_report_invalid_free+0xc0/0xe8 [ 17.587358] check_slab_allocation+0xd4/0x108 [ 17.587571] __kasan_slab_pre_free+0x2c/0x48 [ 17.587679] kmem_cache_free+0xf0/0x470 [ 17.587984] kmem_cache_double_free+0x190/0x3c8 [ 17.588224] kunit_try_run_case+0x170/0x3f0 [ 17.588490] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.588889] kthread+0x328/0x630 [ 17.589069] ret_from_fork+0x10/0x20 [ 17.589331] [ 17.589381] Allocated by task 209: [ 17.589661] kasan_save_stack+0x3c/0x68 [ 17.589806] kasan_save_track+0x20/0x40 [ 17.589943] kasan_save_alloc_info+0x40/0x58 [ 17.590102] __kasan_slab_alloc+0xa8/0xb0 [ 17.590197] kmem_cache_alloc_noprof+0x10c/0x3a0 [ 17.590438] kmem_cache_double_free+0x12c/0x3c8 [ 17.590529] kunit_try_run_case+0x170/0x3f0 [ 17.590848] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.590954] kthread+0x328/0x630 [ 17.591025] ret_from_fork+0x10/0x20 [ 17.591129] [ 17.591167] Freed by task 209: [ 17.591222] kasan_save_stack+0x3c/0x68 [ 17.591293] kasan_save_track+0x20/0x40 [ 17.591360] kasan_save_free_info+0x4c/0x78 [ 17.591471] __kasan_slab_free+0x6c/0x98 [ 17.591593] kmem_cache_free+0x260/0x470 [ 17.591835] kmem_cache_double_free+0x140/0x3c8 [ 17.591925] kunit_try_run_case+0x170/0x3f0 [ 17.592018] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.592119] kthread+0x328/0x630 [ 17.592195] ret_from_fork+0x10/0x20 [ 17.592271] [ 17.592614] The buggy address belongs to the object at fff00000c794a000 [ 17.592614] which belongs to the cache test_cache of size 200 [ 17.592853] The buggy address is located 0 bytes inside of [ 17.592853] 200-byte region [fff00000c794a000, fff00000c794a0c8) [ 17.593164] [ 17.593236] The buggy address belongs to the physical page: [ 17.593359] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10794a [ 17.593749] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.593858] page_type: f5(slab) [ 17.594158] raw: 0bfffe0000000000 fff00000c10968c0 dead000000000122 0000000000000000 [ 17.594392] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 17.594478] page dumped because: kasan: bad access detected [ 17.594544] [ 17.594593] Memory state around the buggy address: [ 17.594661] fff00000c7949f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.594774] fff00000c7949f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.594885] >fff00000c794a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.594978] ^ [ 17.595082] fff00000c794a080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 17.595216] fff00000c794a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.595343] ==================================================================
[ 17.545728] ================================================================== [ 17.546211] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 17.546408] Free of addr ffff888102b58000 by task kunit_try_catch/226 [ 17.546833] [ 17.547023] CPU: 1 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT(voluntary) [ 17.547086] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.547100] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 17.547126] Call Trace: [ 17.547141] <TASK> [ 17.547163] dump_stack_lvl+0x73/0xb0 [ 17.547197] print_report+0xd1/0x650 [ 17.547226] ? __virt_addr_valid+0x1db/0x2d0 [ 17.547351] ? kasan_complete_mode_report_info+0x64/0x200 [ 17.547377] ? kmem_cache_double_free+0x1e5/0x480 [ 17.547398] kasan_report_invalid_free+0x10a/0x130 [ 17.547423] ? kmem_cache_double_free+0x1e5/0x480 [ 17.547466] ? kmem_cache_double_free+0x1e5/0x480 [ 17.547487] check_slab_allocation+0x101/0x130 [ 17.547525] __kasan_slab_pre_free+0x28/0x40 [ 17.547550] kmem_cache_free+0xed/0x420 [ 17.547572] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 17.547593] ? kmem_cache_double_free+0x1e5/0x480 [ 17.547617] kmem_cache_double_free+0x1e5/0x480 [ 17.547638] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 17.547658] ? finish_task_switch.isra.0+0x153/0x700 [ 17.547725] ? __switch_to+0x47/0xf50 [ 17.547754] ? __pfx_read_tsc+0x10/0x10 [ 17.547909] ? ktime_get_ts64+0x86/0x230 [ 17.547973] kunit_try_run_case+0x1a5/0x480 [ 17.548005] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.548030] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 17.548085] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 17.548109] ? __kthread_parkme+0x82/0x180 [ 17.548131] ? preempt_count_sub+0x50/0x80 [ 17.548154] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.548178] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.548202] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 17.548225] kthread+0x337/0x6f0 [ 17.548246] ? trace_preempt_on+0x20/0xc0 [ 17.548284] ? __pfx_kthread+0x10/0x10 [ 17.548306] ? _raw_spin_unlock_irq+0x47/0x80 [ 17.548327] ? calculate_sigpending+0x7b/0xa0 [ 17.548353] ? __pfx_kthread+0x10/0x10 [ 17.548375] ret_from_fork+0x116/0x1d0 [ 17.548394] ? __pfx_kthread+0x10/0x10 [ 17.548415] ret_from_fork_asm+0x1a/0x30 [ 17.548446] </TASK> [ 17.548459] [ 17.557770] Allocated by task 226: [ 17.557888] kasan_save_stack+0x45/0x70 [ 17.558218] kasan_save_track+0x18/0x40 [ 17.558480] kasan_save_alloc_info+0x3b/0x50 [ 17.558776] __kasan_slab_alloc+0x91/0xa0 [ 17.559058] kmem_cache_alloc_noprof+0x123/0x3f0 [ 17.559312] kmem_cache_double_free+0x14f/0x480 [ 17.559508] kunit_try_run_case+0x1a5/0x480 [ 17.559696] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.559917] kthread+0x337/0x6f0 [ 17.560116] ret_from_fork+0x116/0x1d0 [ 17.560574] ret_from_fork_asm+0x1a/0x30 [ 17.560845] [ 17.560995] Freed by task 226: [ 17.561194] kasan_save_stack+0x45/0x70 [ 17.561433] kasan_save_track+0x18/0x40 [ 17.561530] kasan_save_free_info+0x3f/0x60 [ 17.561627] __kasan_slab_free+0x56/0x70 [ 17.561741] kmem_cache_free+0x249/0x420 [ 17.561837] kmem_cache_double_free+0x16a/0x480 [ 17.561937] kunit_try_run_case+0x1a5/0x480 [ 17.562295] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.562683] kthread+0x337/0x6f0 [ 17.562935] ret_from_fork+0x116/0x1d0 [ 17.563294] ret_from_fork_asm+0x1a/0x30 [ 17.563577] [ 17.563745] The buggy address belongs to the object at ffff888102b58000 [ 17.563745] which belongs to the cache test_cache of size 200 [ 17.564388] The buggy address is located 0 bytes inside of [ 17.564388] 200-byte region [ffff888102b58000, ffff888102b580c8) [ 17.564912] [ 17.565007] The buggy address belongs to the physical page: [ 17.565343] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b58 [ 17.565506] flags: 0x200000000000000(node=0|zone=2) [ 17.565624] page_type: f5(slab) [ 17.565736] raw: 0200000000000000 ffff8881017c2dc0 dead000000000122 0000000000000000 [ 17.566285] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 17.566787] page dumped because: kasan: bad access detected [ 17.567118] [ 17.567267] Memory state around the buggy address: [ 17.567451] ffff888102b57f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.567598] ffff888102b57f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.568003] >ffff888102b58000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.568643] ^ [ 17.568802] ffff888102b58080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 17.569214] ffff888102b58100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.569475] ==================================================================