Date
July 9, 2025, 2:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.253896] ================================================================== [ 18.254159] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 18.254443] Free of addr fff00000c778d000 by task kunit_try_catch/209 [ 18.254619] [ 18.254986] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc5 #1 PREEMPT [ 18.255346] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 18.255430] Hardware name: linux,dummy-virt (DT) [ 18.255564] Call trace: [ 18.255695] show_stack+0x20/0x38 (C) [ 18.255854] dump_stack_lvl+0x8c/0xd0 [ 18.255924] print_report+0x118/0x608 [ 18.256284] kasan_report_invalid_free+0xc0/0xe8 [ 18.256385] check_slab_allocation+0xd4/0x108 [ 18.256523] __kasan_slab_pre_free+0x2c/0x48 [ 18.256621] kmem_cache_free+0xf0/0x468 [ 18.256799] kmem_cache_double_free+0x190/0x3c8 [ 18.256854] kunit_try_run_case+0x170/0x3f0 [ 18.257296] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.257456] kthread+0x328/0x630 [ 18.257676] ret_from_fork+0x10/0x20 [ 18.257814] [ 18.257834] Allocated by task 209: [ 18.257868] kasan_save_stack+0x3c/0x68 [ 18.257912] kasan_save_track+0x20/0x40 [ 18.258839] kasan_save_alloc_info+0x40/0x58 [ 18.258993] __kasan_slab_alloc+0xa8/0xb0 [ 18.259134] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.259666] kmem_cache_double_free+0x12c/0x3c8 [ 18.259804] kunit_try_run_case+0x170/0x3f0 [ 18.259877] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.260074] kthread+0x328/0x630 [ 18.260281] ret_from_fork+0x10/0x20 [ 18.260339] [ 18.260579] Freed by task 209: [ 18.260741] kasan_save_stack+0x3c/0x68 [ 18.260825] kasan_save_track+0x20/0x40 [ 18.260980] kasan_save_free_info+0x4c/0x78 [ 18.261150] __kasan_slab_free+0x6c/0x98 [ 18.261219] kmem_cache_free+0x260/0x468 [ 18.261285] kmem_cache_double_free+0x140/0x3c8 [ 18.261539] kunit_try_run_case+0x170/0x3f0 [ 18.261659] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.261832] kthread+0x328/0x630 [ 18.262145] ret_from_fork+0x10/0x20 [ 18.262398] [ 18.262551] The buggy address belongs to the object at fff00000c778d000 [ 18.262551] which belongs to the cache test_cache of size 200 [ 18.263065] The buggy address is located 0 bytes inside of [ 18.263065] 200-byte region [fff00000c778d000, fff00000c778d0c8) [ 18.263481] [ 18.263548] The buggy address belongs to the physical page: [ 18.263609] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10778d [ 18.263690] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.263987] page_type: f5(slab) [ 18.264212] raw: 0bfffe0000000000 fff00000c1ba23c0 dead000000000122 0000000000000000 [ 18.264498] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 18.264616] page dumped because: kasan: bad access detected [ 18.264723] [ 18.264744] Memory state around the buggy address: [ 18.264778] fff00000c778cf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.264985] fff00000c778cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.265107] >fff00000c778d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.265208] ^ [ 18.265296] fff00000c778d080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 18.265578] fff00000c778d100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.266171] ==================================================================
[ 13.456912] ================================================================== [ 13.458865] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.459401] Free of addr ffff88810395e000 by task kunit_try_catch/226 [ 13.459626] [ 13.459722] CPU: 1 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.459769] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.460018] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.460045] Call Trace: [ 13.460061] <TASK> [ 13.460080] dump_stack_lvl+0x73/0xb0 [ 13.460115] print_report+0xd1/0x650 [ 13.460139] ? __virt_addr_valid+0x1db/0x2d0 [ 13.460406] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.460436] ? kmem_cache_double_free+0x1e5/0x480 [ 13.460477] kasan_report_invalid_free+0x10a/0x130 [ 13.460502] ? kmem_cache_double_free+0x1e5/0x480 [ 13.460528] ? kmem_cache_double_free+0x1e5/0x480 [ 13.460564] check_slab_allocation+0x101/0x130 [ 13.460585] __kasan_slab_pre_free+0x28/0x40 [ 13.460615] kmem_cache_free+0xed/0x420 [ 13.460635] ? kasan_save_track+0x18/0x40 [ 13.460654] ? kasan_save_stack+0x45/0x70 [ 13.460672] ? kmem_cache_double_free+0x1e5/0x480 [ 13.460696] ? __kasan_slab_free+0x61/0x70 [ 13.460717] kmem_cache_double_free+0x1e5/0x480 [ 13.460742] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.460766] ? finish_task_switch.isra.0+0x153/0x700 [ 13.460798] ? __switch_to+0x47/0xf50 [ 13.460838] ? __pfx_read_tsc+0x10/0x10 [ 13.460859] ? ktime_get_ts64+0x86/0x230 [ 13.460884] kunit_try_run_case+0x1a5/0x480 [ 13.460909] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.460932] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.460957] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.460980] ? __kthread_parkme+0x82/0x180 [ 13.461001] ? preempt_count_sub+0x50/0x80 [ 13.461023] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.461046] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.461070] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.461094] kthread+0x337/0x6f0 [ 13.461112] ? trace_preempt_on+0x20/0xc0 [ 13.461135] ? __pfx_kthread+0x10/0x10 [ 13.461155] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.461176] ? calculate_sigpending+0x7b/0xa0 [ 13.461201] ? __pfx_kthread+0x10/0x10 [ 13.461222] ret_from_fork+0x116/0x1d0 [ 13.461239] ? __pfx_kthread+0x10/0x10 [ 13.461259] ret_from_fork_asm+0x1a/0x30 [ 13.461290] </TASK> [ 13.461300] [ 13.474633] Allocated by task 226: [ 13.474904] kasan_save_stack+0x45/0x70 [ 13.475102] kasan_save_track+0x18/0x40 [ 13.475278] kasan_save_alloc_info+0x3b/0x50 [ 13.475476] __kasan_slab_alloc+0x91/0xa0 [ 13.475671] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.476437] kmem_cache_double_free+0x14f/0x480 [ 13.477158] kunit_try_run_case+0x1a5/0x480 [ 13.477443] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.478118] kthread+0x337/0x6f0 [ 13.478455] ret_from_fork+0x116/0x1d0 [ 13.478647] ret_from_fork_asm+0x1a/0x30 [ 13.479115] [ 13.479353] Freed by task 226: [ 13.479526] kasan_save_stack+0x45/0x70 [ 13.479717] kasan_save_track+0x18/0x40 [ 13.480195] kasan_save_free_info+0x3f/0x60 [ 13.480549] __kasan_slab_free+0x56/0x70 [ 13.480741] kmem_cache_free+0x249/0x420 [ 13.481489] kmem_cache_double_free+0x16a/0x480 [ 13.481801] kunit_try_run_case+0x1a5/0x480 [ 13.482288] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.482678] kthread+0x337/0x6f0 [ 13.483107] ret_from_fork+0x116/0x1d0 [ 13.483308] ret_from_fork_asm+0x1a/0x30 [ 13.483491] [ 13.483581] The buggy address belongs to the object at ffff88810395e000 [ 13.483581] which belongs to the cache test_cache of size 200 [ 13.484134] The buggy address is located 0 bytes inside of [ 13.484134] 200-byte region [ffff88810395e000, ffff88810395e0c8) [ 13.484977] [ 13.485086] The buggy address belongs to the physical page: [ 13.485264] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10395e [ 13.485629] flags: 0x200000000000000(node=0|zone=2) [ 13.486045] page_type: f5(slab) [ 13.486272] raw: 0200000000000000 ffff8881018c9dc0 dead000000000122 0000000000000000 [ 13.486606] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.487105] page dumped because: kasan: bad access detected [ 13.487431] [ 13.487545] Memory state around the buggy address: [ 13.487738] ffff88810395df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.488174] ffff88810395df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.488425] >ffff88810395e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.488747] ^ [ 13.489146] ffff88810395e080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.489548] ffff88810395e100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.489842] ==================================================================