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

Environment
qemu-arm64
qemu-x86_64

[   27.745640] ==================================================================
[   27.746032] BUG: KASAN: slab-out-of-bounds in kmalloc_memmove_invalid_size+0x154/0x2e0
[   27.746228] Read of size 64 at addr fff00000c7770d84 by task kunit_try_catch/184
[   27.746420] 
[   27.746723] CPU: 0 UID: 0 PID: 184 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc7 #1 PREEMPT 
[   27.747058] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.747196] Hardware name: linux,dummy-virt (DT)
[   27.747301] Call trace:
[   27.747427]  show_stack+0x20/0x38 (C)
[   27.748187]  dump_stack_lvl+0x8c/0xd0
[   27.748399]  print_report+0x118/0x608
[   27.748603]  kasan_report+0xdc/0x128
[   27.748773]  kasan_check_range+0x100/0x1a8
[   27.748892]  __asan_memmove+0x3c/0x98
[   27.749002]  kmalloc_memmove_invalid_size+0x154/0x2e0
[   27.749223]  kunit_try_run_case+0x170/0x3f0
[   27.749428]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   27.749676]  kthread+0x328/0x630
[   27.749856]  ret_from_fork+0x10/0x20
[   27.750011] 
[   27.750073] Allocated by task 184:
[   27.750193]  kasan_save_stack+0x3c/0x68
[   27.750353]  kasan_save_track+0x20/0x40
[   27.750497]  kasan_save_alloc_info+0x40/0x58
[   27.750602]  __kasan_kmalloc+0xd4/0xd8
[   27.751176]  __kmalloc_cache_noprof+0x15c/0x3c0
[   27.751603]  kmalloc_memmove_invalid_size+0xb0/0x2e0
[   27.752025]  kunit_try_run_case+0x170/0x3f0
[   27.752203]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   27.752351]  kthread+0x328/0x630
[   27.752461]  ret_from_fork+0x10/0x20
[   27.752569] 
[   27.752879] The buggy address belongs to the object at fff00000c7770d80
[   27.752879]  which belongs to the cache kmalloc-64 of size 64
[   27.753100] The buggy address is located 4 bytes inside of
[   27.753100]  allocated 64-byte region [fff00000c7770d80, fff00000c7770dc0)
[   27.753327] 
[   27.753394] The buggy address belongs to the physical page:
[   27.753537] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107770
[   27.753790] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   27.753936] page_type: f5(slab)
[   27.754054] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000
[   27.754225] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
[   27.754397] page dumped because: kasan: bad access detected
[   27.754557] 
[   27.754866] Memory state around the buggy address:
[   27.755233]  fff00000c7770c80: 00 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc
[   27.755425]  fff00000c7770d00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   27.756191] >fff00000c7770d80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[   27.756294]                                            ^
[   27.756395]  fff00000c7770e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   27.757597]  fff00000c7770e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   27.757737] ==================================================================

[   12.777731] ==================================================================
[   12.778228] BUG: KASAN: slab-out-of-bounds in kmalloc_memmove_invalid_size+0x16f/0x330
[   12.778545] Read of size 64 at addr ffff888102701384 by task kunit_try_catch/201
[   12.778782] 
[   12.778871] CPU: 0 UID: 0 PID: 201 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc7 #1 PREEMPT(voluntary) 
[   12.778918] Tainted: [B]=BAD_PAGE, [N]=TEST
[   12.778930] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   12.778950] Call Trace:
[   12.778962]  <TASK>
[   12.778977]  dump_stack_lvl+0x73/0xb0
[   12.779004]  print_report+0xd1/0x650
[   12.779025]  ? __virt_addr_valid+0x1db/0x2d0
[   12.779046]  ? kmalloc_memmove_invalid_size+0x16f/0x330
[   12.779069]  ? kasan_complete_mode_report_info+0x2a/0x200
[   12.779090]  ? kmalloc_memmove_invalid_size+0x16f/0x330
[   12.779114]  kasan_report+0x141/0x180
[   12.779136]  ? kmalloc_memmove_invalid_size+0x16f/0x330
[   12.779165]  kasan_check_range+0x10c/0x1c0
[   12.779185]  __asan_memmove+0x27/0x70
[   12.779204]  kmalloc_memmove_invalid_size+0x16f/0x330
[   12.779228]  ? __pfx_kmalloc_memmove_invalid_size+0x10/0x10
[   12.779253]  ? __schedule+0x10cc/0x2b30
[   12.779275]  ? __pfx_read_tsc+0x10/0x10
[   12.779305]  ? ktime_get_ts64+0x86/0x230
[   12.779330]  kunit_try_run_case+0x1a5/0x480
[   12.779353]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.779374]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   12.779396]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   12.779418]  ? __kthread_parkme+0x82/0x180
[   12.779722]  ? preempt_count_sub+0x50/0x80
[   12.779749]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.779787]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.779809]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   12.779831]  kthread+0x337/0x6f0
[   12.779847]  ? trace_preempt_on+0x20/0xc0
[   12.779870]  ? __pfx_kthread+0x10/0x10
[   12.779887]  ? _raw_spin_unlock_irq+0x47/0x80
[   12.779908]  ? calculate_sigpending+0x7b/0xa0
[   12.779928]  ? __pfx_kthread+0x10/0x10
[   12.779946]  ret_from_fork+0x41/0x80
[   12.779966]  ? __pfx_kthread+0x10/0x10
[   12.779984]  ret_from_fork_asm+0x1a/0x30
[   12.780014]  </TASK>
[   12.780026] 
[   12.794881] Allocated by task 201:
[   12.795156]  kasan_save_stack+0x45/0x70
[   12.795558]  kasan_save_track+0x18/0x40
[   12.795701]  kasan_save_alloc_info+0x3b/0x50
[   12.795847]  __kasan_kmalloc+0xb7/0xc0
[   12.796149]  __kmalloc_cache_noprof+0x189/0x420
[   12.796590]  kmalloc_memmove_invalid_size+0xac/0x330
[   12.797119]  kunit_try_run_case+0x1a5/0x480
[   12.797559]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.798119]  kthread+0x337/0x6f0
[   12.798549]  ret_from_fork+0x41/0x80
[   12.798700]  ret_from_fork_asm+0x1a/0x30
[   12.798919] 
[   12.799155] The buggy address belongs to the object at ffff888102701380
[   12.799155]  which belongs to the cache kmalloc-64 of size 64
[   12.800307] The buggy address is located 4 bytes inside of
[   12.800307]  allocated 64-byte region [ffff888102701380, ffff8881027013c0)
[   12.800923] 
[   12.801153] The buggy address belongs to the physical page:
[   12.801715] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102701
[   12.802187] flags: 0x200000000000000(node=0|zone=2)
[   12.802373] page_type: f5(slab)
[   12.802597] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000
[   12.803399] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
[   12.804226] page dumped because: kasan: bad access detected
[   12.804782] 
[   12.804976] Memory state around the buggy address:
[   12.805305]  ffff888102701280: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   12.805624]  ffff888102701300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   12.806357] >ffff888102701380: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[   12.807069]                                            ^
[   12.807586]  ffff888102701400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.807820]  ffff888102701480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.808605] ==================================================================