Date
July 1, 2025, 12:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.314247] ================================================================== [ 18.315397] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 18.315542] Free of addr fff00000c5901000 by task kunit_try_catch/209 [ 18.315637] [ 18.315701] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.316191] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.316466] Hardware name: linux,dummy-virt (DT) [ 18.316615] Call trace: [ 18.316645] show_stack+0x20/0x38 (C) [ 18.316977] dump_stack_lvl+0x8c/0xd0 [ 18.317035] print_report+0x118/0x608 [ 18.317084] kasan_report_invalid_free+0xc0/0xe8 [ 18.317684] check_slab_allocation+0xd4/0x108 [ 18.317804] __kasan_slab_pre_free+0x2c/0x48 [ 18.317958] kmem_cache_free+0xf0/0x468 [ 18.318123] kmem_cache_double_free+0x190/0x3c8 [ 18.318669] kunit_try_run_case+0x170/0x3f0 [ 18.319144] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.319211] kthread+0x328/0x630 [ 18.319258] ret_from_fork+0x10/0x20 [ 18.319700] [ 18.319722] Allocated by task 209: [ 18.319914] kasan_save_stack+0x3c/0x68 [ 18.320075] kasan_save_track+0x20/0x40 [ 18.320303] kasan_save_alloc_info+0x40/0x58 [ 18.320346] __kasan_slab_alloc+0xa8/0xb0 [ 18.320495] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.320552] kmem_cache_double_free+0x12c/0x3c8 [ 18.320913] kunit_try_run_case+0x170/0x3f0 [ 18.320953] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.320995] kthread+0x328/0x630 [ 18.321028] ret_from_fork+0x10/0x20 [ 18.321779] [ 18.321809] Freed by task 209: [ 18.321839] kasan_save_stack+0x3c/0x68 [ 18.322095] kasan_save_track+0x20/0x40 [ 18.322406] kasan_save_free_info+0x4c/0x78 [ 18.322866] __kasan_slab_free+0x6c/0x98 [ 18.323055] kmem_cache_free+0x260/0x468 [ 18.323098] kmem_cache_double_free+0x140/0x3c8 [ 18.323136] kunit_try_run_case+0x170/0x3f0 [ 18.323339] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.323390] kthread+0x328/0x630 [ 18.323424] ret_from_fork+0x10/0x20 [ 18.323468] [ 18.323719] The buggy address belongs to the object at fff00000c5901000 [ 18.323719] which belongs to the cache test_cache of size 200 [ 18.323803] The buggy address is located 0 bytes inside of [ 18.323803] 200-byte region [fff00000c5901000, fff00000c59010c8) [ 18.324333] [ 18.324582] The buggy address belongs to the physical page: [ 18.324620] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105901 [ 18.325005] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.325148] page_type: f5(slab) [ 18.325472] raw: 0bfffe0000000000 fff00000c3e4f280 dead000000000122 0000000000000000 [ 18.325528] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 18.325714] page dumped because: kasan: bad access detected [ 18.325977] [ 18.326216] Memory state around the buggy address: [ 18.326255] fff00000c5900f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 18.326535] fff00000c5900f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 18.326787] >fff00000c5901000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.327107] ^ [ 18.327215] fff00000c5901080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 18.327479] fff00000c5901100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.327777] ==================================================================
[ 12.126971] ================================================================== [ 12.127563] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 12.128369] Free of addr ffff888103116000 by task kunit_try_catch/226 [ 12.128973] [ 12.129087] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.129130] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.129141] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.129161] Call Trace: [ 12.129173] <TASK> [ 12.129187] dump_stack_lvl+0x73/0xb0 [ 12.129216] print_report+0xd1/0x650 [ 12.129238] ? __virt_addr_valid+0x1db/0x2d0 [ 12.129260] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.129282] ? kmem_cache_double_free+0x1e5/0x480 [ 12.129306] kasan_report_invalid_free+0x10a/0x130 [ 12.129328] ? kmem_cache_double_free+0x1e5/0x480 [ 12.129353] ? kmem_cache_double_free+0x1e5/0x480 [ 12.129375] check_slab_allocation+0x101/0x130 [ 12.129396] __kasan_slab_pre_free+0x28/0x40 [ 12.129415] kmem_cache_free+0xed/0x420 [ 12.129435] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.129454] ? kmem_cache_double_free+0x1e5/0x480 [ 12.129479] kmem_cache_double_free+0x1e5/0x480 [ 12.129501] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.129523] ? finish_task_switch.isra.0+0x153/0x700 [ 12.129544] ? __switch_to+0x47/0xf50 [ 12.129572] ? __pfx_read_tsc+0x10/0x10 [ 12.129593] ? ktime_get_ts64+0x86/0x230 [ 12.129615] kunit_try_run_case+0x1a5/0x480 [ 12.129638] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.129658] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.129680] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.129701] ? __kthread_parkme+0x82/0x180 [ 12.129719] ? preempt_count_sub+0x50/0x80 [ 12.129740] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.129762] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.129783] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.129804] kthread+0x337/0x6f0 [ 12.129823] ? trace_preempt_on+0x20/0xc0 [ 12.129845] ? __pfx_kthread+0x10/0x10 [ 12.129865] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.129885] ? calculate_sigpending+0x7b/0xa0 [ 12.129907] ? __pfx_kthread+0x10/0x10 [ 12.129927] ret_from_fork+0x116/0x1d0 [ 12.129944] ? __pfx_kthread+0x10/0x10 [ 12.129962] ret_from_fork_asm+0x1a/0x30 [ 12.129991] </TASK> [ 12.130001] [ 12.145192] Allocated by task 226: [ 12.145606] kasan_save_stack+0x45/0x70 [ 12.146008] kasan_save_track+0x18/0x40 [ 12.146271] kasan_save_alloc_info+0x3b/0x50 [ 12.146762] __kasan_slab_alloc+0x91/0xa0 [ 12.147264] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.147424] kmem_cache_double_free+0x14f/0x480 [ 12.147832] kunit_try_run_case+0x1a5/0x480 [ 12.148314] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.148993] kthread+0x337/0x6f0 [ 12.149286] ret_from_fork+0x116/0x1d0 [ 12.149705] ret_from_fork_asm+0x1a/0x30 [ 12.150040] [ 12.150219] Freed by task 226: [ 12.150424] kasan_save_stack+0x45/0x70 [ 12.150697] kasan_save_track+0x18/0x40 [ 12.151241] kasan_save_free_info+0x3f/0x60 [ 12.151824] __kasan_slab_free+0x56/0x70 [ 12.152160] kmem_cache_free+0x249/0x420 [ 12.152493] kmem_cache_double_free+0x16a/0x480 [ 12.152942] kunit_try_run_case+0x1a5/0x480 [ 12.153426] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.153857] kthread+0x337/0x6f0 [ 12.153977] ret_from_fork+0x116/0x1d0 [ 12.154349] ret_from_fork_asm+0x1a/0x30 [ 12.154493] [ 12.154562] The buggy address belongs to the object at ffff888103116000 [ 12.154562] which belongs to the cache test_cache of size 200 [ 12.154899] The buggy address is located 0 bytes inside of [ 12.154899] 200-byte region [ffff888103116000, ffff8881031160c8) [ 12.155255] [ 12.155613] The buggy address belongs to the physical page: [ 12.156324] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103116 [ 12.156779] flags: 0x200000000000000(node=0|zone=2) [ 12.156942] page_type: f5(slab) [ 12.157217] raw: 0200000000000000 ffff888101ae4b40 dead000000000122 0000000000000000 [ 12.157913] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 12.158761] page dumped because: kasan: bad access detected [ 12.159190] [ 12.159549] Memory state around the buggy address: [ 12.159827] ffff888103115f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.160107] ffff888103115f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.161034] >ffff888103116000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.161789] ^ [ 12.161908] ffff888103116080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.162294] ffff888103116100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.162864] ==================================================================