Hay
Date
May 23, 2025, 11:07 p.m.

Environment
qemu-arm64
qemu-x86_64

[   26.950404] ==================================================================
[   26.950702] BUG: KASAN: invalid-free in kfree+0x270/0x3c8
[   26.950889] Free of addr fff00000c77a4001 by task kunit_try_catch/152
[   26.951020] 
[   26.951116] CPU: 0 UID: 0 PID: 152 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc7 #1 PREEMPT 
[   26.951351] Tainted: [B]=BAD_PAGE, [N]=TEST
[   26.951438] Hardware name: linux,dummy-virt (DT)
[   26.952097] Call trace:
[   26.952185]  show_stack+0x20/0x38 (C)
[   26.952353]  dump_stack_lvl+0x8c/0xd0
[   26.952506]  print_report+0x118/0x608
[   26.952641]  kasan_report_invalid_free+0xc0/0xe8
[   26.952780]  __kasan_kfree_large+0x5c/0xa8
[   26.952913]  free_large_kmalloc+0x64/0x190
[   26.953058]  kfree+0x270/0x3c8
[   26.953192]  kmalloc_large_invalid_free+0x108/0x270
[   26.953309]  kunit_try_run_case+0x170/0x3f0
[   26.953699]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   26.953898]  kthread+0x328/0x630
[   26.954033]  ret_from_fork+0x10/0x20
[   26.954176] 
[   26.954595] The buggy address belongs to the physical page:
[   26.954798] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077a4
[   26.954969] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   26.955105] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff)
[   26.955265] page_type: f8(unknown)
[   26.955390] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   26.956071] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   26.956192] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   26.956302] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   26.956429] head: 0bfffe0000000002 ffffc1ffc31de901 00000000ffffffff 00000000ffffffff
[   26.957109] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   26.957275] page dumped because: kasan: bad access detected
[   26.957416] 
[   26.957508] Memory state around the buggy address:
[   26.957646]  fff00000c77a3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   26.957824]  fff00000c77a3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   26.957991] >fff00000c77a4000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   26.958104]                    ^
[   26.958191]  fff00000c77a4080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   26.958366]  fff00000c77a4100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   26.958595] ==================================================================

[   12.196309] ==================================================================
[   12.196920] BUG: KASAN: invalid-free in kfree+0x274/0x3f0
[   12.197321] Free of addr ffff888102ab0001 by task kunit_try_catch/169
[   12.197596] 
[   12.197727] CPU: 1 UID: 0 PID: 169 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc7 #1 PREEMPT(voluntary) 
[   12.197777] Tainted: [B]=BAD_PAGE, [N]=TEST
[   12.197789] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   12.197811] Call Trace:
[   12.197823]  <TASK>
[   12.197841]  dump_stack_lvl+0x73/0xb0
[   12.197871]  print_report+0xd1/0x650
[   12.197894]  ? __virt_addr_valid+0x1db/0x2d0
[   12.197971]  ? kasan_addr_to_slab+0x11/0xa0
[   12.197991]  ? kfree+0x274/0x3f0
[   12.198010]  kasan_report_invalid_free+0x10a/0x130
[   12.198034]  ? kfree+0x274/0x3f0
[   12.198054]  ? kfree+0x274/0x3f0
[   12.198071]  __kasan_kfree_large+0x86/0xd0
[   12.198092]  free_large_kmalloc+0x4b/0x110
[   12.198112]  kfree+0x274/0x3f0
[   12.198134]  kmalloc_large_invalid_free+0x120/0x2b0
[   12.198156]  ? __pfx_kmalloc_large_invalid_free+0x10/0x10
[   12.198179]  ? sysvec_apic_timer_interrupt+0x50/0x90
[   12.198203]  ? trace_hardirqs_on+0x37/0xe0
[   12.198227]  ? __pfx_read_tsc+0x10/0x10
[   12.198247]  ? ktime_get_ts64+0x86/0x230
[   12.198272]  kunit_try_run_case+0x1a5/0x480
[   12.198312]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.198335]  ? queued_spin_lock_slowpath+0x116/0xb40
[   12.198359]  ? __kthread_parkme+0x82/0x180
[   12.198381]  ? preempt_count_sub+0x50/0x80
[   12.198406]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.198429]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.198450]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   12.198472]  kthread+0x337/0x6f0
[   12.198488]  ? trace_preempt_on+0x20/0xc0
[   12.198510]  ? __pfx_kthread+0x10/0x10
[   12.198529]  ? _raw_spin_unlock_irq+0x47/0x80
[   12.198559]  ? calculate_sigpending+0x7b/0xa0
[   12.198581]  ? __pfx_kthread+0x10/0x10
[   12.198599]  ret_from_fork+0x41/0x80
[   12.198619]  ? __pfx_kthread+0x10/0x10
[   12.198636]  ret_from_fork_asm+0x1a/0x30
[   12.198672]  </TASK>
[   12.198684] 
[   12.206225] The buggy address belongs to the physical page:
[   12.206429] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102ab0
[   12.207320] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   12.207674] flags: 0x200000000000040(head|node=0|zone=2)
[   12.207939] page_type: f8(unknown)
[   12.208166] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   12.208416] raw: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   12.208761] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   12.209244] head: 0000000000000000 0000000000000000 00000001f8000000 0000000000000000
[   12.209485] head: 0200000000000002 ffffea00040aac01 00000000ffffffff 00000000ffffffff
[   12.210079] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
[   12.210402] page dumped because: kasan: bad access detected
[   12.210575] 
[   12.210645] Memory state around the buggy address:
[   12.210951]  ffff888102aaff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.211283]  ffff888102aaff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.211558] >ffff888102ab0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   12.211862]                    ^
[   12.212037]  ffff888102ab0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   12.212301]  ffff888102ab0100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   12.212589] ==================================================================