Date
June 17, 2025, 3:40 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 22.907917] ================================================================== [ 22.908042] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 22.908167] Free of addr fff00000c792b000 by task kunit_try_catch/211 [ 22.908228] [ 22.908289] CPU: 0 UID: 0 PID: 211 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT [ 22.908393] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.908424] Hardware name: linux,dummy-virt (DT) [ 22.908467] Call trace: [ 22.908495] show_stack+0x20/0x38 (C) [ 22.908557] dump_stack_lvl+0x8c/0xd0 [ 22.908749] print_report+0x118/0x608 [ 22.908813] kasan_report_invalid_free+0xc0/0xe8 [ 22.908870] check_slab_allocation+0xd4/0x108 [ 22.908925] __kasan_slab_pre_free+0x2c/0x48 [ 22.909045] kmem_cache_free+0xf0/0x468 [ 22.909110] kmem_cache_double_free+0x190/0x3c8 [ 22.909168] kunit_try_run_case+0x170/0x3f0 [ 22.909240] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.909945] kthread+0x328/0x630 [ 22.910038] ret_from_fork+0x10/0x20 [ 22.910487] [ 22.910521] Allocated by task 211: [ 22.910566] kasan_save_stack+0x3c/0x68 [ 22.910628] kasan_save_track+0x20/0x40 [ 22.910672] kasan_save_alloc_info+0x40/0x58 [ 22.910779] __kasan_slab_alloc+0xa8/0xb0 [ 22.910830] kmem_cache_alloc_noprof+0x10c/0x398 [ 22.910878] kmem_cache_double_free+0x12c/0x3c8 [ 22.910926] kunit_try_run_case+0x170/0x3f0 [ 22.910975] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.911024] kthread+0x328/0x630 [ 22.911066] ret_from_fork+0x10/0x20 [ 22.911111] [ 22.911133] Freed by task 211: [ 22.911165] kasan_save_stack+0x3c/0x68 [ 22.911207] kasan_save_track+0x20/0x40 [ 22.911250] kasan_save_free_info+0x4c/0x78 [ 22.911326] __kasan_slab_free+0x6c/0x98 [ 22.911426] kmem_cache_free+0x260/0x468 [ 22.911468] kmem_cache_double_free+0x140/0x3c8 [ 22.911540] kunit_try_run_case+0x170/0x3f0 [ 22.911587] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.911642] kthread+0x328/0x630 [ 22.911683] ret_from_fork+0x10/0x20 [ 22.911766] [ 22.911793] The buggy address belongs to the object at fff00000c792b000 [ 22.911793] which belongs to the cache test_cache of size 200 [ 22.911867] The buggy address is located 0 bytes inside of [ 22.911867] 200-byte region [fff00000c792b000, fff00000c792b0c8) [ 22.911994] [ 22.912025] The buggy address belongs to the physical page: [ 22.912089] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10792b [ 22.912220] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 22.912288] page_type: f5(slab) [ 22.912341] raw: 0bfffe0000000000 fff00000c5918280 dead000000000122 0000000000000000 [ 22.912405] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 22.912455] page dumped because: kasan: bad access detected [ 22.912491] [ 22.912516] Memory state around the buggy address: [ 22.912601] fff00000c792af00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 22.912718] fff00000c792af80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 22.912794] >fff00000c792b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.912843] ^ [ 22.912877] fff00000c792b080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 22.912930] fff00000c792b100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.912974] ==================================================================
[ 20.496404] ================================================================== [ 20.497151] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 20.497926] Free of addr ffff888102ee2000 by task kunit_try_catch/229 [ 20.498455] [ 20.498692] CPU: 1 UID: 0 PID: 229 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT(voluntary) [ 20.498834] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.498875] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 20.498937] Call Trace: [ 20.498979] <TASK> [ 20.499036] dump_stack_lvl+0x73/0xb0 [ 20.499211] print_report+0xd1/0x650 [ 20.499307] ? __virt_addr_valid+0x1db/0x2d0 [ 20.499386] ? kasan_complete_mode_report_info+0x64/0x200 [ 20.499457] ? kmem_cache_double_free+0x1e5/0x480 [ 20.499528] kasan_report_invalid_free+0x10a/0x130 [ 20.499606] ? kmem_cache_double_free+0x1e5/0x480 [ 20.499683] ? kmem_cache_double_free+0x1e5/0x480 [ 20.499800] check_slab_allocation+0x101/0x130 [ 20.499919] __kasan_slab_pre_free+0x28/0x40 [ 20.500043] kmem_cache_free+0xed/0x420 [ 20.500149] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 20.500221] ? kmem_cache_double_free+0x1e5/0x480 [ 20.500315] kmem_cache_double_free+0x1e5/0x480 [ 20.500390] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 20.500433] ? finish_task_switch.isra.0+0x153/0x700 [ 20.500472] ? __switch_to+0x5d9/0xf60 [ 20.500502] ? dequeue_task_fair+0x166/0x4e0 [ 20.500541] ? __pfx_read_tsc+0x10/0x10 [ 20.500571] ? ktime_get_ts64+0x86/0x230 [ 20.500607] kunit_try_run_case+0x1a5/0x480 [ 20.500647] ? __pfx_kunit_try_run_case+0x10/0x10 [ 20.500681] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 20.500718] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 20.500752] ? __kthread_parkme+0x82/0x180 [ 20.500785] ? preempt_count_sub+0x50/0x80 [ 20.500821] ? __pfx_kunit_try_run_case+0x10/0x10 [ 20.500854] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.500887] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 20.500922] kthread+0x337/0x6f0 [ 20.500953] ? trace_preempt_on+0x20/0xc0 [ 20.501032] ? __pfx_kthread+0x10/0x10 [ 20.501092] ? _raw_spin_unlock_irq+0x47/0x80 [ 20.501148] ? calculate_sigpending+0x7b/0xa0 [ 20.501184] ? __pfx_kthread+0x10/0x10 [ 20.501209] ret_from_fork+0x41/0x80 [ 20.501240] ? __pfx_kthread+0x10/0x10 [ 20.501265] ret_from_fork_asm+0x1a/0x30 [ 20.501335] </TASK> [ 20.501354] [ 20.520887] Allocated by task 229: [ 20.521463] kasan_save_stack+0x45/0x70 [ 20.521909] kasan_save_track+0x18/0x40 [ 20.522465] kasan_save_alloc_info+0x3b/0x50 [ 20.522787] __kasan_slab_alloc+0x91/0xa0 [ 20.523318] kmem_cache_alloc_noprof+0x123/0x3f0 [ 20.523840] kmem_cache_double_free+0x14f/0x480 [ 20.524603] kunit_try_run_case+0x1a5/0x480 [ 20.525259] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.525800] kthread+0x337/0x6f0 [ 20.526361] ret_from_fork+0x41/0x80 [ 20.526769] ret_from_fork_asm+0x1a/0x30 [ 20.527357] [ 20.527617] Freed by task 229: [ 20.528076] kasan_save_stack+0x45/0x70 [ 20.528528] kasan_save_track+0x18/0x40 [ 20.529255] kasan_save_free_info+0x3f/0x60 [ 20.529682] __kasan_slab_free+0x56/0x70 [ 20.530230] kmem_cache_free+0x249/0x420 [ 20.530682] kmem_cache_double_free+0x16a/0x480 [ 20.531301] kunit_try_run_case+0x1a5/0x480 [ 20.531716] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.532464] kthread+0x337/0x6f0 [ 20.532767] ret_from_fork+0x41/0x80 [ 20.533359] ret_from_fork_asm+0x1a/0x30 [ 20.533817] [ 20.534346] The buggy address belongs to the object at ffff888102ee2000 [ 20.534346] which belongs to the cache test_cache of size 200 [ 20.535590] The buggy address is located 0 bytes inside of [ 20.535590] 200-byte region [ffff888102ee2000, ffff888102ee20c8) [ 20.536594] [ 20.536785] The buggy address belongs to the physical page: [ 20.537335] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102ee2 [ 20.538305] flags: 0x200000000000000(node=0|zone=2) [ 20.538775] page_type: f5(slab) [ 20.539525] raw: 0200000000000000 ffff888101b20c80 dead000000000122 0000000000000000 [ 20.540469] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 20.541222] page dumped because: kasan: bad access detected [ 20.541670] [ 20.542079] Memory state around the buggy address: [ 20.542533] ffff888102ee1f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.543307] ffff888102ee1f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.543826] >ffff888102ee2000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.544633] ^ [ 20.545018] ffff888102ee2080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 20.545598] ffff888102ee2100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.546364] ==================================================================