Hay
Date
July 17, 2025, 10:12 a.m.

Environment
qemu-arm64
qemu-x86_64

[   30.423644] ==================================================================
[   30.423938] BUG: KASAN: invalid-free in kmem_cache_invalid_free+0x184/0x3c8
[   30.424413] Free of addr fff00000c9b27001 by task kunit_try_catch/242
[   30.424478] 
[   30.424658] CPU: 1 UID: 0 PID: 242 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6-next-20250717 #1 PREEMPT 
[   30.424754] Tainted: [B]=BAD_PAGE, [N]=TEST
[   30.424780] Hardware name: linux,dummy-virt (DT)
[   30.424814] Call trace:
[   30.424838]  show_stack+0x20/0x38 (C)
[   30.424892]  dump_stack_lvl+0x8c/0xd0
[   30.424945]  print_report+0x118/0x5d0
[   30.424988]  kasan_report_invalid_free+0xc0/0xe8
[   30.425036]  check_slab_allocation+0xfc/0x108
[   30.426437]  __kasan_slab_pre_free+0x2c/0x48
[   30.426557]  kmem_cache_free+0xf0/0x468
[   30.426610]  kmem_cache_invalid_free+0x184/0x3c8
[   30.426660]  kunit_try_run_case+0x170/0x3f0
[   30.426746]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   30.426852]  kthread+0x328/0x630
[   30.426997]  ret_from_fork+0x10/0x20
[   30.427078] 
[   30.427099] Allocated by task 242:
[   30.427129]  kasan_save_stack+0x3c/0x68
[   30.427553]  kasan_save_track+0x20/0x40
[   30.428076]  kasan_save_alloc_info+0x40/0x58
[   30.428125]  __kasan_slab_alloc+0xa8/0xb0
[   30.428162]  kmem_cache_alloc_noprof+0x10c/0x398
[   30.428203]  kmem_cache_invalid_free+0x12c/0x3c8
[   30.428244]  kunit_try_run_case+0x170/0x3f0
[   30.428282]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   30.428332]  kthread+0x328/0x630
[   30.428492]  ret_from_fork+0x10/0x20
[   30.428559] 
[   30.428579] The buggy address belongs to the object at fff00000c9b27000
[   30.428579]  which belongs to the cache test_cache of size 200
[   30.428655] The buggy address is located 1 bytes inside of
[   30.428655]  200-byte region [fff00000c9b27000, fff00000c9b270c8)
[   30.428717] 
[   30.428739] The buggy address belongs to the physical page:
[   30.428824] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109b27
[   30.429239] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   30.429330] page_type: f5(slab)
[   30.429714] raw: 0bfffe0000000000 fff00000c58173c0 dead000000000122 0000000000000000
[   30.429869] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000
[   30.429913] page dumped because: kasan: bad access detected
[   30.429944] 
[   30.429963] Memory state around the buggy address:
[   30.430284]  fff00000c9b26f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.430342]  fff00000c9b26f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.430658] >fff00000c9b27000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   30.430719]                    ^
[   30.430748]  fff00000c9b27080: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
[   30.430847]  fff00000c9b27100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.430886] ==================================================================

[   26.384999] ==================================================================
[   26.385815] BUG: KASAN: invalid-free in kmem_cache_invalid_free+0x1d8/0x460
[   26.386053] Free of addr ffff888105ff8001 by task kunit_try_catch/260
[   26.386374] 
[   26.386813] CPU: 1 UID: 0 PID: 260 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) 
[   26.386869] Tainted: [B]=BAD_PAGE, [N]=TEST
[   26.386880] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   26.386901] Call Trace:
[   26.386914]  <TASK>
[   26.386932]  dump_stack_lvl+0x73/0xb0
[   26.387276]  print_report+0xd1/0x610
[   26.387313]  ? __virt_addr_valid+0x1db/0x2d0
[   26.387339]  ? kasan_complete_mode_report_info+0x2a/0x200
[   26.387363]  ? kmem_cache_invalid_free+0x1d8/0x460
[   26.387387]  kasan_report_invalid_free+0x10a/0x130
[   26.387410]  ? kmem_cache_invalid_free+0x1d8/0x460
[   26.387435]  ? kmem_cache_invalid_free+0x1d8/0x460
[   26.387458]  check_slab_allocation+0x11f/0x130
[   26.387479]  __kasan_slab_pre_free+0x28/0x40
[   26.387498]  kmem_cache_free+0xed/0x420
[   26.387517]  ? kmem_cache_alloc_noprof+0x123/0x3f0
[   26.387539]  ? kmem_cache_invalid_free+0x1d8/0x460
[   26.387565]  kmem_cache_invalid_free+0x1d8/0x460
[   26.387588]  ? __pfx_kmem_cache_invalid_free+0x10/0x10
[   26.387610]  ? finish_task_switch.isra.0+0x153/0x700
[   26.387630]  ? __switch_to+0x47/0xf80
[   26.387659]  ? __pfx_read_tsc+0x10/0x10
[   26.387680]  ? ktime_get_ts64+0x86/0x230
[   26.387704]  kunit_try_run_case+0x1a5/0x480
[   26.387729]  ? __pfx_kunit_try_run_case+0x10/0x10
[   26.387749]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   26.387772]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   26.387794]  ? __kthread_parkme+0x82/0x180
[   26.387817]  ? preempt_count_sub+0x50/0x80
[   26.387839]  ? __pfx_kunit_try_run_case+0x10/0x10
[   26.387862]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   26.387889]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   26.387911]  kthread+0x337/0x6f0
[   26.387929]  ? trace_preempt_on+0x20/0xc0
[   26.387953]  ? __pfx_kthread+0x10/0x10
[   26.387972]  ? _raw_spin_unlock_irq+0x47/0x80
[   26.387993]  ? calculate_sigpending+0x7b/0xa0
[   26.388016]  ? __pfx_kthread+0x10/0x10
[   26.388036]  ret_from_fork+0x116/0x1d0
[   26.388055]  ? __pfx_kthread+0x10/0x10
[   26.388074]  ret_from_fork_asm+0x1a/0x30
[   26.388114]  </TASK>
[   26.388125] 
[   26.404329] Allocated by task 260:
[   26.404792]  kasan_save_stack+0x45/0x70
[   26.405037]  kasan_save_track+0x18/0x40
[   26.405177]  kasan_save_alloc_info+0x3b/0x50
[   26.405336]  __kasan_slab_alloc+0x91/0xa0
[   26.405714]  kmem_cache_alloc_noprof+0x123/0x3f0
[   26.406239]  kmem_cache_invalid_free+0x157/0x460
[   26.406690]  kunit_try_run_case+0x1a5/0x480
[   26.407101]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   26.407456]  kthread+0x337/0x6f0
[   26.407802]  ret_from_fork+0x116/0x1d0
[   26.408091]  ret_from_fork_asm+0x1a/0x30
[   26.408225] 
[   26.408306] The buggy address belongs to the object at ffff888105ff8000
[   26.408306]  which belongs to the cache test_cache of size 200
[   26.409567] The buggy address is located 1 bytes inside of
[   26.409567]  200-byte region [ffff888105ff8000, ffff888105ff80c8)
[   26.410382] 
[   26.410468] The buggy address belongs to the physical page:
[   26.410895] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105ff8
[   26.411688] flags: 0x200000000000000(node=0|zone=2)
[   26.412179] page_type: f5(slab)
[   26.412683] raw: 0200000000000000 ffff8881015d8780 dead000000000122 0000000000000000
[   26.413217] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000
[   26.413693] page dumped because: kasan: bad access detected
[   26.414180] 
[   26.414330] Memory state around the buggy address:
[   26.414521]  ffff888105ff7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   26.414864]  ffff888105ff7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   26.415170] >ffff888105ff8000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   26.415920]                    ^
[   26.416091]  ffff888105ff8080: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
[   26.416624]  ffff888105ff8100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   26.417346] ==================================================================