Date
June 3, 2025, 7:38 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.981156] ================================================================== [ 18.981251] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 18.981509] Free of addr fff00000c65c9000 by task kunit_try_catch/209 [ 18.981565] [ 18.981763] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250603 #1 PREEMPT [ 18.981883] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.981937] Hardware name: linux,dummy-virt (DT) [ 18.981974] Call trace: [ 18.982013] show_stack+0x20/0x38 (C) [ 18.982069] dump_stack_lvl+0x8c/0xd0 [ 18.982166] print_report+0x118/0x608 [ 18.982215] kasan_report_invalid_free+0xc0/0xe8 [ 18.982303] check_slab_allocation+0xd4/0x108 [ 18.982471] __kasan_slab_pre_free+0x2c/0x48 [ 18.982598] kmem_cache_free+0xf0/0x468 [ 18.982679] kmem_cache_double_free+0x190/0x3c8 [ 18.982747] kunit_try_run_case+0x170/0x3f0 [ 18.982798] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.982853] kthread+0x328/0x630 [ 18.982897] ret_from_fork+0x10/0x20 [ 18.982947] [ 18.982982] Allocated by task 209: [ 18.983139] kasan_save_stack+0x3c/0x68 [ 18.983184] kasan_save_track+0x20/0x40 [ 18.983219] kasan_save_alloc_info+0x40/0x58 [ 18.983257] __kasan_slab_alloc+0xa8/0xb0 [ 18.983418] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.983568] kmem_cache_double_free+0x12c/0x3c8 [ 18.983619] kunit_try_run_case+0x170/0x3f0 [ 18.983658] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.983724] kthread+0x328/0x630 [ 18.983757] ret_from_fork+0x10/0x20 [ 18.983793] [ 18.983811] Freed by task 209: [ 18.983930] kasan_save_stack+0x3c/0x68 [ 18.983972] kasan_save_track+0x20/0x40 [ 18.984007] kasan_save_free_info+0x4c/0x78 [ 18.984043] __kasan_slab_free+0x6c/0x98 [ 18.984079] kmem_cache_free+0x260/0x468 [ 18.984116] kmem_cache_double_free+0x140/0x3c8 [ 18.984154] kunit_try_run_case+0x170/0x3f0 [ 18.984190] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.984234] kthread+0x328/0x630 [ 18.984318] ret_from_fork+0x10/0x20 [ 18.984375] [ 18.984494] The buggy address belongs to the object at fff00000c65c9000 [ 18.984494] which belongs to the cache test_cache of size 200 [ 18.984611] The buggy address is located 0 bytes inside of [ 18.984611] 200-byte region [fff00000c65c9000, fff00000c65c90c8) [ 18.984742] [ 18.984852] The buggy address belongs to the physical page: [ 18.984931] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1065c9 [ 18.984988] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.985043] page_type: f5(slab) [ 18.985085] raw: 0bfffe0000000000 fff00000c16fadc0 dead000000000122 0000000000000000 [ 18.985135] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 18.985317] page dumped because: kasan: bad access detected [ 18.985402] [ 18.985452] Memory state around the buggy address: [ 18.985537] fff00000c65c8f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.985623] fff00000c65c8f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.985687] >fff00000c65c9000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.985728] ^ [ 18.985755] fff00000c65c9080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 18.985798] fff00000c65c9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.985838] ==================================================================
[ 15.430609] ================================================================== [ 15.431132] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 15.431324] Free of addr ffff8881033e3000 by task kunit_try_catch/226 [ 15.431522] [ 15.431745] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250603 #1 PREEMPT(voluntary) [ 15.431809] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.431824] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.431875] Call Trace: [ 15.431892] <TASK> [ 15.431918] dump_stack_lvl+0x73/0xb0 [ 15.431952] print_report+0xd1/0x650 [ 15.431979] ? __virt_addr_valid+0x1db/0x2d0 [ 15.432009] ? kasan_complete_mode_report_info+0x64/0x200 [ 15.432058] ? kmem_cache_double_free+0x1e5/0x480 [ 15.432083] kasan_report_invalid_free+0x10a/0x130 [ 15.432109] ? kmem_cache_double_free+0x1e5/0x480 [ 15.432132] ? kmem_cache_double_free+0x1e5/0x480 [ 15.432154] check_slab_allocation+0x101/0x130 [ 15.432178] __kasan_slab_pre_free+0x28/0x40 [ 15.432201] kmem_cache_free+0xed/0x420 [ 15.432276] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 15.432299] ? kmem_cache_double_free+0x1e5/0x480 [ 15.432324] kmem_cache_double_free+0x1e5/0x480 [ 15.432346] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 15.432368] ? finish_task_switch.isra.0+0x153/0x700 [ 15.432395] ? __switch_to+0x47/0xf50 [ 15.432427] ? __pfx_read_tsc+0x10/0x10 [ 15.432463] ? ktime_get_ts64+0x86/0x230 [ 15.432494] kunit_try_run_case+0x1a5/0x480 [ 15.432520] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.432541] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.432570] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.432597] ? __kthread_parkme+0x82/0x180 [ 15.432620] ? preempt_count_sub+0x50/0x80 [ 15.432644] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.432666] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.432693] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.432976] kthread+0x337/0x6f0 [ 15.433041] ? trace_preempt_on+0x20/0xc0 [ 15.433075] ? __pfx_kthread+0x10/0x10 [ 15.433122] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.433171] ? calculate_sigpending+0x7b/0xa0 [ 15.433203] ? __pfx_kthread+0x10/0x10 [ 15.433228] ret_from_fork+0x116/0x1d0 [ 15.433251] ? __pfx_kthread+0x10/0x10 [ 15.433273] ret_from_fork_asm+0x1a/0x30 [ 15.433309] </TASK> [ 15.433323] [ 15.444120] Allocated by task 226: [ 15.444502] kasan_save_stack+0x45/0x70 [ 15.444844] kasan_save_track+0x18/0x40 [ 15.445301] kasan_save_alloc_info+0x3b/0x50 [ 15.445496] __kasan_slab_alloc+0x91/0xa0 [ 15.445607] kmem_cache_alloc_noprof+0x123/0x3f0 [ 15.445833] kmem_cache_double_free+0x14f/0x480 [ 15.446445] kunit_try_run_case+0x1a5/0x480 [ 15.446591] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.447009] kthread+0x337/0x6f0 [ 15.447251] ret_from_fork+0x116/0x1d0 [ 15.447605] ret_from_fork_asm+0x1a/0x30 [ 15.447780] [ 15.448153] Freed by task 226: [ 15.448590] kasan_save_stack+0x45/0x70 [ 15.448818] kasan_save_track+0x18/0x40 [ 15.449038] kasan_save_free_info+0x3f/0x60 [ 15.449147] __kasan_slab_free+0x56/0x70 [ 15.449290] kmem_cache_free+0x249/0x420 [ 15.449650] kmem_cache_double_free+0x16a/0x480 [ 15.450079] kunit_try_run_case+0x1a5/0x480 [ 15.450322] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.450593] kthread+0x337/0x6f0 [ 15.450815] ret_from_fork+0x116/0x1d0 [ 15.451372] ret_from_fork_asm+0x1a/0x30 [ 15.451634] [ 15.452047] The buggy address belongs to the object at ffff8881033e3000 [ 15.452047] which belongs to the cache test_cache of size 200 [ 15.452703] The buggy address is located 0 bytes inside of [ 15.452703] 200-byte region [ffff8881033e3000, ffff8881033e30c8) [ 15.453586] [ 15.453783] The buggy address belongs to the physical page: [ 15.454112] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1033e3 [ 15.454844] flags: 0x200000000000000(node=0|zone=2) [ 15.455123] page_type: f5(slab) [ 15.455253] raw: 0200000000000000 ffff8881018acdc0 dead000000000122 0000000000000000 [ 15.455765] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 15.456270] page dumped because: kasan: bad access detected [ 15.456424] [ 15.456511] Memory state around the buggy address: [ 15.456645] ffff8881033e2f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.457378] ffff8881033e2f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.457998] >ffff8881033e3000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.458412] ^ [ 15.458624] ffff8881033e3080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 15.459217] ffff8881033e3100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.459432] ==================================================================