Date
July 10, 2025, 11:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.704314] ================================================================== [ 16.704415] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 16.704789] Free of addr fff00000c6419000 by task kunit_try_catch/209 [ 16.704834] [ 16.704879] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.704967] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.704995] Hardware name: linux,dummy-virt (DT) [ 16.705029] Call trace: [ 16.705053] show_stack+0x20/0x38 (C) [ 16.705424] dump_stack_lvl+0x8c/0xd0 [ 16.705509] print_report+0x118/0x608 [ 16.705561] kasan_report_invalid_free+0xc0/0xe8 [ 16.705692] check_slab_allocation+0xd4/0x108 [ 16.705755] __kasan_slab_pre_free+0x2c/0x48 [ 16.705881] kmem_cache_free+0xf0/0x468 [ 16.705935] kmem_cache_double_free+0x190/0x3c8 [ 16.706275] kunit_try_run_case+0x170/0x3f0 [ 16.706374] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.706497] kthread+0x328/0x630 [ 16.706576] ret_from_fork+0x10/0x20 [ 16.706727] [ 16.706802] Allocated by task 209: [ 16.706861] kasan_save_stack+0x3c/0x68 [ 16.707113] kasan_save_track+0x20/0x40 [ 16.707404] kasan_save_alloc_info+0x40/0x58 [ 16.707471] __kasan_slab_alloc+0xa8/0xb0 [ 16.707603] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.707679] kmem_cache_double_free+0x12c/0x3c8 [ 16.707780] kunit_try_run_case+0x170/0x3f0 [ 16.707904] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.707979] kthread+0x328/0x630 [ 16.708054] ret_from_fork+0x10/0x20 [ 16.708271] [ 16.708440] Freed by task 209: [ 16.708569] kasan_save_stack+0x3c/0x68 [ 16.708627] kasan_save_track+0x20/0x40 [ 16.708759] kasan_save_free_info+0x4c/0x78 [ 16.708827] __kasan_slab_free+0x6c/0x98 [ 16.708866] kmem_cache_free+0x260/0x468 [ 16.708933] kmem_cache_double_free+0x140/0x3c8 [ 16.709160] kunit_try_run_case+0x170/0x3f0 [ 16.709345] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.709411] kthread+0x328/0x630 [ 16.710100] ret_from_fork+0x10/0x20 [ 16.710182] [ 16.710203] The buggy address belongs to the object at fff00000c6419000 [ 16.710203] which belongs to the cache test_cache of size 200 [ 16.710278] The buggy address is located 0 bytes inside of [ 16.710278] 200-byte region [fff00000c6419000, fff00000c64190c8) [ 16.710359] [ 16.710613] The buggy address belongs to the physical page: [ 16.710699] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106419 [ 16.711118] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.711185] page_type: f5(slab) [ 16.711228] raw: 0bfffe0000000000 fff00000c56963c0 dead000000000122 0000000000000000 [ 16.711801] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 16.711853] page dumped because: kasan: bad access detected [ 16.711968] [ 16.712483] Memory state around the buggy address: [ 16.712546] fff00000c6418f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.712602] fff00000c6418f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.712698] >fff00000c6419000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.712776] ^ [ 16.712864] fff00000c6419080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 16.712933] fff00000c6419100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.713039] ==================================================================
[ 13.394868] ================================================================== [ 13.395630] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.395865] Free of addr ffff888102d74000 by task kunit_try_catch/226 [ 13.396063] [ 13.396153] CPU: 1 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.396200] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.396212] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.396231] Call Trace: [ 13.396242] <TASK> [ 13.396257] dump_stack_lvl+0x73/0xb0 [ 13.396287] print_report+0xd1/0x650 [ 13.396309] ? __virt_addr_valid+0x1db/0x2d0 [ 13.396333] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.396355] ? kmem_cache_double_free+0x1e5/0x480 [ 13.396445] kasan_report_invalid_free+0x10a/0x130 [ 13.396487] ? kmem_cache_double_free+0x1e5/0x480 [ 13.396515] ? kmem_cache_double_free+0x1e5/0x480 [ 13.396540] check_slab_allocation+0x101/0x130 [ 13.396562] __kasan_slab_pre_free+0x28/0x40 [ 13.396726] kmem_cache_free+0xed/0x420 [ 13.396747] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.396803] ? kmem_cache_double_free+0x1e5/0x480 [ 13.396831] kmem_cache_double_free+0x1e5/0x480 [ 13.396867] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.396892] ? finish_task_switch.isra.0+0x153/0x700 [ 13.396915] ? __switch_to+0x47/0xf50 [ 13.396942] ? __pfx_read_tsc+0x10/0x10 [ 13.396963] ? ktime_get_ts64+0x86/0x230 [ 13.396986] kunit_try_run_case+0x1a5/0x480 [ 13.397010] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.397032] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.397057] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.397080] ? __kthread_parkme+0x82/0x180 [ 13.397101] ? preempt_count_sub+0x50/0x80 [ 13.397123] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.397147] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.397202] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.397227] kthread+0x337/0x6f0 [ 13.397246] ? trace_preempt_on+0x20/0xc0 [ 13.397305] ? __pfx_kthread+0x10/0x10 [ 13.397326] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.397440] ? calculate_sigpending+0x7b/0xa0 [ 13.397465] ? __pfx_kthread+0x10/0x10 [ 13.397486] ret_from_fork+0x116/0x1d0 [ 13.397505] ? __pfx_kthread+0x10/0x10 [ 13.397525] ret_from_fork_asm+0x1a/0x30 [ 13.397556] </TASK> [ 13.397566] [ 13.406258] Allocated by task 226: [ 13.406510] kasan_save_stack+0x45/0x70 [ 13.406770] kasan_save_track+0x18/0x40 [ 13.406969] kasan_save_alloc_info+0x3b/0x50 [ 13.407181] __kasan_slab_alloc+0x91/0xa0 [ 13.407489] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.407767] kmem_cache_double_free+0x14f/0x480 [ 13.407994] kunit_try_run_case+0x1a5/0x480 [ 13.408250] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.408601] kthread+0x337/0x6f0 [ 13.408730] ret_from_fork+0x116/0x1d0 [ 13.408863] ret_from_fork_asm+0x1a/0x30 [ 13.409063] [ 13.409158] Freed by task 226: [ 13.409450] kasan_save_stack+0x45/0x70 [ 13.409672] kasan_save_track+0x18/0x40 [ 13.409938] kasan_save_free_info+0x3f/0x60 [ 13.410161] __kasan_slab_free+0x56/0x70 [ 13.410412] kmem_cache_free+0x249/0x420 [ 13.410599] kmem_cache_double_free+0x16a/0x480 [ 13.410827] kunit_try_run_case+0x1a5/0x480 [ 13.411035] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.411296] kthread+0x337/0x6f0 [ 13.411484] ret_from_fork+0x116/0x1d0 [ 13.411665] ret_from_fork_asm+0x1a/0x30 [ 13.411840] [ 13.411935] The buggy address belongs to the object at ffff888102d74000 [ 13.411935] which belongs to the cache test_cache of size 200 [ 13.412581] The buggy address is located 0 bytes inside of [ 13.412581] 200-byte region [ffff888102d74000, ffff888102d740c8) [ 13.413060] [ 13.413159] The buggy address belongs to the physical page: [ 13.413530] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102d74 [ 13.413791] flags: 0x200000000000000(node=0|zone=2) [ 13.414078] page_type: f5(slab) [ 13.414251] raw: 0200000000000000 ffff888100ff4b40 dead000000000122 0000000000000000 [ 13.414765] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.415128] page dumped because: kasan: bad access detected [ 13.415501] [ 13.415596] Memory state around the buggy address: [ 13.415873] ffff888102d73f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.416227] ffff888102d73f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.416568] >ffff888102d74000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.416945] ^ [ 13.417114] ffff888102d74080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.417553] ffff888102d74100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.417864] ==================================================================