Hay
Date
June 5, 2025, 7:08 a.m.

Environment
qemu-arm64
qemu-x86_64

[   24.726440] ==================================================================
[   24.726607] BUG: KASAN: invalid-free in kfree+0x270/0x3c8
[   24.726734] Free of addr fff00000c77d4001 by task kunit_try_catch/150
[   24.726840] 
[   24.726909] CPU: 1 UID: 0 PID: 150 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-next-20250605 #1 PREEMPT 
[   24.727316] Tainted: [B]=BAD_PAGE, [N]=TEST
[   24.727422] Hardware name: linux,dummy-virt (DT)
[   24.727522] Call trace:
[   24.727554]  show_stack+0x20/0x38 (C)
[   24.727618]  dump_stack_lvl+0x8c/0xd0
[   24.727680]  print_report+0x118/0x608
[   24.727737]  kasan_report_invalid_free+0xc0/0xe8
[   24.727798]  __kasan_kfree_large+0x5c/0xa8
[   24.728080]  free_large_kmalloc+0x64/0x190
[   24.728224]  kfree+0x270/0x3c8
[   24.728850]  kmalloc_large_invalid_free+0x108/0x270
[   24.729085]  kunit_try_run_case+0x170/0x3f0
[   24.729223]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   24.729383]  kthread+0x328/0x630
[   24.729488]  ret_from_fork+0x10/0x20
[   24.729600] 
[   24.729649] The buggy address belongs to the physical page:
[   24.731118] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077d4
[   24.731890] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   24.732271] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff)
[   24.732432] page_type: f8(unknown)
[   24.732529] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   24.732706] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   24.733287] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   24.733590] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   24.733713] head: 0bfffe0000000002 ffffc1ffc31df501 00000000ffffffff 00000000ffffffff
[   24.733836] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   24.734015] page dumped because: kasan: bad access detected
[   24.734113] 
[   24.734272] Memory state around the buggy address:
[   24.734372]  fff00000c77d3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   24.734483]  fff00000c77d3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   24.735407] >fff00000c77d4000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   24.735596]                    ^
[   24.735693]  fff00000c77d4080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   24.735897]  fff00000c77d4100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   24.736012] ==================================================================


[   10.918654] ==================================================================
[   10.919430] BUG: KASAN: invalid-free in kfree+0x274/0x3f0
[   10.920011] Free of addr ffff888102c28001 by task kunit_try_catch/167
[   10.920683] 
[   10.921011] CPU: 1 UID: 0 PID: 167 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-next-20250605 #1 PREEMPT(voluntary) 
[   10.921062] Tainted: [B]=BAD_PAGE, [N]=TEST
[   10.921074] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   10.921094] Call Trace:
[   10.921106]  <TASK>
[   10.921140]  dump_stack_lvl+0x73/0xb0
[   10.921170]  print_report+0xd1/0x650
[   10.921193]  ? __virt_addr_valid+0x1db/0x2d0
[   10.921218]  ? kasan_addr_to_slab+0x11/0xa0
[   10.921238]  ? kfree+0x274/0x3f0
[   10.921259]  kasan_report_invalid_free+0x10a/0x130
[   10.921283]  ? kfree+0x274/0x3f0
[   10.921306]  ? kfree+0x274/0x3f0
[   10.921326]  __kasan_kfree_large+0x86/0xd0
[   10.921348]  free_large_kmalloc+0x4b/0x110
[   10.921370]  kfree+0x274/0x3f0
[   10.921395]  kmalloc_large_invalid_free+0x120/0x2b0
[   10.921417]  ? __pfx_kmalloc_large_invalid_free+0x10/0x10
[   10.921440]  ? __schedule+0x10cc/0x2b60
[   10.921464]  ? __pfx_read_tsc+0x10/0x10
[   10.921485]  ? ktime_get_ts64+0x86/0x230
[   10.921510]  kunit_try_run_case+0x1a5/0x480
[   10.921531]  ? __pfx_kunit_try_run_case+0x10/0x10
[   10.921550]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   10.921576]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   10.921601]  ? __kthread_parkme+0x82/0x180
[   10.921622]  ? preempt_count_sub+0x50/0x80
[   10.921659]  ? __pfx_kunit_try_run_case+0x10/0x10
[   10.921680]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   10.921703]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   10.921728]  kthread+0x337/0x6f0
[   10.921747]  ? trace_preempt_on+0x20/0xc0
[   10.921769]  ? __pfx_kthread+0x10/0x10
[   10.921789]  ? _raw_spin_unlock_irq+0x47/0x80
[   10.921811]  ? calculate_sigpending+0x7b/0xa0
[   10.921835]  ? __pfx_kthread+0x10/0x10
[   10.921856]  ret_from_fork+0x116/0x1d0
[   10.921875]  ? __pfx_kthread+0x10/0x10
[   10.921906]  ret_from_fork_asm+0x1a/0x30
[   10.921937]  </TASK>
[   10.921959] 
[   10.934104] The buggy address belongs to the physical page:
[   10.934668] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c28
[   10.935586] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.936228] flags: 0x200000000000040(head|node=0|zone=2)
[   10.936413] page_type: f8(unknown)
[   10.936542] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   10.937125] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   10.937807] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   10.938744] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   10.939406] head: 0200000000000002 ffffea00040b0a01 00000000ffffffff 00000000ffffffff
[   10.939665] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   10.940383] page dumped because: kasan: bad access detected
[   10.940880] 
[   10.941090] Memory state around the buggy address:
[   10.941515]  ffff888102c27f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.941856]  ffff888102c27f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.942562] >ffff888102c28000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   10.943005]                    ^
[   10.943321]  ffff888102c28080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   10.943755]  ffff888102c28100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   10.944443] ==================================================================