Hay
Date
June 16, 2025, 7:07 a.m.

Environment
qemu-arm64
qemu-x86_64

[   18.839702] ==================================================================
[   18.840143] BUG: KASAN: invalid-free in kfree+0x270/0x3c8
[   18.840804] Free of addr fff00000c660c001 by task kunit_try_catch/159
[   18.841037] 
[   18.841138] CPU: 0 UID: 0 PID: 159 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc2-next-20250616 #1 PREEMPT 
[   18.841444] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.841504] Hardware name: linux,dummy-virt (DT)
[   18.841781] Call trace:
[   18.841866]  show_stack+0x20/0x38 (C)
[   18.842007]  dump_stack_lvl+0x8c/0xd0
[   18.842131]  print_report+0x118/0x608
[   18.842246]  kasan_report_invalid_free+0xc0/0xe8
[   18.842646]  __kasan_kfree_large+0x5c/0xa8
[   18.842892]  free_large_kmalloc+0x64/0x190
[   18.843409]  kfree+0x270/0x3c8
[   18.843538]  kmalloc_large_invalid_free+0x108/0x270
[   18.843659]  kunit_try_run_case+0x170/0x3f0
[   18.843777]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.843919]  kthread+0x328/0x630
[   18.844105]  ret_from_fork+0x10/0x20
[   18.844546] 
[   18.845578] The buggy address belongs to the physical page:
[   18.845701] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10660c
[   18.845860] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   18.846354] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff)
[   18.846688] page_type: f8(unknown)
[   18.847175] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   18.847384] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   18.847845] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   18.848002] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   18.848114] head: 0bfffe0000000002 ffffc1ffc3198301 00000000ffffffff 00000000ffffffff
[   18.848746] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   18.848983] page dumped because: kasan: bad access detected
[   18.849068] 
[   18.849152] Memory state around the buggy address:
[   18.849247]  fff00000c660bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.849508]  fff00000c660bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.849712] >fff00000c660c000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   18.849825]                    ^
[   18.849918]  fff00000c660c080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   18.850025]  fff00000c660c100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   18.850587] ==================================================================

[   10.928972] ==================================================================
[   10.929874] BUG: KASAN: invalid-free in kfree+0x274/0x3f0
[   10.930265] Free of addr ffff888102ad0001 by task kunit_try_catch/175
[   10.930858] 
[   10.931002] CPU: 1 UID: 0 PID: 175 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc2-next-20250616 #1 PREEMPT(voluntary) 
[   10.931053] Tainted: [B]=BAD_PAGE, [N]=TEST
[   10.931065] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   10.931087] Call Trace:
[   10.931102]  <TASK>
[   10.931121]  dump_stack_lvl+0x73/0xb0
[   10.931155]  print_report+0xd1/0x650
[   10.931179]  ? __virt_addr_valid+0x1db/0x2d0
[   10.931202]  ? kasan_addr_to_slab+0x11/0xa0
[   10.931221]  ? kfree+0x274/0x3f0
[   10.931243]  kasan_report_invalid_free+0x10a/0x130
[   10.931266]  ? kfree+0x274/0x3f0
[   10.931288]  ? kfree+0x274/0x3f0
[   10.931307]  __kasan_kfree_large+0x86/0xd0
[   10.931327]  free_large_kmalloc+0x4b/0x110
[   10.931350]  kfree+0x274/0x3f0
[   10.931373]  kmalloc_large_invalid_free+0x120/0x2b0
[   10.931395]  ? __pfx_kmalloc_large_invalid_free+0x10/0x10
[   10.931416]  ? __schedule+0x10cc/0x2b60
[   10.931438]  ? __pfx_read_tsc+0x10/0x10
[   10.931458]  ? ktime_get_ts64+0x86/0x230
[   10.931483]  kunit_try_run_case+0x1a5/0x480
[   10.931531]  ? __pfx_kunit_try_run_case+0x10/0x10
[   10.931552]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   10.931574]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   10.931595]  ? __kthread_parkme+0x82/0x180
[   10.931614]  ? preempt_count_sub+0x50/0x80
[   10.931638]  ? __pfx_kunit_try_run_case+0x10/0x10
[   10.931660]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   10.931683]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   10.931705]  kthread+0x337/0x6f0
[   10.931723]  ? trace_preempt_on+0x20/0xc0
[   10.931747]  ? __pfx_kthread+0x10/0x10
[   10.931766]  ? _raw_spin_unlock_irq+0x47/0x80
[   10.931785]  ? calculate_sigpending+0x7b/0xa0
[   10.931809]  ? __pfx_kthread+0x10/0x10
[   10.931829]  ret_from_fork+0x116/0x1d0
[   10.931846]  ? __pfx_kthread+0x10/0x10
[   10.931866]  ret_from_fork_asm+0x1a/0x30
[   10.931896]  </TASK>
[   10.931907] 
[   10.941226] The buggy address belongs to the physical page:
[   10.941753] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102ad0
[   10.942190] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.942686] flags: 0x200000000000040(head|node=0|zone=2)
[   10.942901] page_type: f8(unknown)
[   10.943079] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   10.943702] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   10.944078] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   10.944394] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   10.944916] head: 0200000000000002 ffffea00040ab401 00000000ffffffff 00000000ffffffff
[   10.945339] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   10.945881] page dumped because: kasan: bad access detected
[   10.946228] 
[   10.946302] Memory state around the buggy address:
[   10.946611]  ffff888102acff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.947089]  ffff888102acff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.947352] >ffff888102ad0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   10.947790]                    ^
[   10.948062]  ffff888102ad0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   10.948334]  ffff888102ad0100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   10.948648] ==================================================================