Hay
Date
July 3, 2025, 10:10 a.m.

Environment
dragonboard-845c
qemu-arm64
qemu-x86_64

[   40.932742] ==================================================================
[   40.944997] BUG: KASAN: slab-out-of-bounds in kmalloc_memmove_invalid_size+0x154/0x2e0
[   40.953019] Read of size 64 at addr ffff000098090384 by task kunit_try_catch/291
[   40.960517] 
[   40.962046] CPU: 4 UID: 0 PID: 291 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4-next-20250703 #1 PREEMPT 
[   40.962077] Tainted: [B]=BAD_PAGE, [N]=TEST
[   40.962085] Hardware name: Thundercomm Dragonboard 845c (DT)
[   40.962097] Call trace:
[   40.962104]  show_stack+0x20/0x38 (C)
[   40.962123]  dump_stack_lvl+0x8c/0xd0
[   40.962144]  print_report+0x118/0x608
[   40.962162]  kasan_report+0xdc/0x128
[   40.962181]  kasan_check_range+0x100/0x1a8
[   40.962201]  __asan_memmove+0x3c/0x98
[   40.962215]  kmalloc_memmove_invalid_size+0x154/0x2e0
[   40.962234]  kunit_try_run_case+0x170/0x3f0
[   40.962253]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   40.962274]  kthread+0x328/0x630
[   40.962288]  ret_from_fork+0x10/0x20
[   40.962305] 
[   41.031831] Allocated by task 291:
[   41.035286]  kasan_save_stack+0x3c/0x68
[   41.039185]  kasan_save_track+0x20/0x40
[   41.043080]  kasan_save_alloc_info+0x40/0x58
[   41.047416]  __kasan_kmalloc+0xd4/0xd8
[   41.051234]  __kmalloc_cache_noprof+0x16c/0x3c0
[   41.055837]  kmalloc_memmove_invalid_size+0xb0/0x2e0
[   41.060872]  kunit_try_run_case+0x170/0x3f0
[   41.065124]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   41.070690]  kthread+0x328/0x630
[   41.073975]  ret_from_fork+0x10/0x20
[   41.077609] 
[   41.079141] The buggy address belongs to the object at ffff000098090380
[   41.079141]  which belongs to the cache kmalloc-64 of size 64
[   41.091620] The buggy address is located 4 bytes inside of
[   41.091620]  allocated 64-byte region [ffff000098090380, ffff0000980903c0)
[   41.104106] 
[   41.105631] The buggy address belongs to the physical page:
[   41.111273] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x118090
[   41.119377] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   41.125997] page_type: f5(slab)
[   41.129194] raw: 0bfffe0000000000 ffff0000800028c0 dead000000000122 0000000000000000
[   41.137036] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
[   41.144875] page dumped because: kasan: bad access detected
[   41.150523] 
[   41.152053] Memory state around the buggy address:
[   41.156908]  ffff000098090280: 00 00 00 00 03 fc fc fc fc fc fc fc fc fc fc fc
[   41.164225]  ffff000098090300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   41.171532] >ffff000098090380: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[   41.178842]                                            ^
[   41.184226]  ffff000098090400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   41.191543]  ffff000098090480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   41.198854] ==================================================================

[   31.175165] ==================================================================
[   31.175236] BUG: KASAN: slab-out-of-bounds in kmalloc_memmove_invalid_size+0x154/0x2e0
[   31.175296] Read of size 64 at addr fff00000c5a6ae84 by task kunit_try_catch/214
[   31.175730] 
[   31.175781] CPU: 0 UID: 0 PID: 214 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4-next-20250703 #1 PREEMPT 
[   31.176154] Tainted: [B]=BAD_PAGE, [N]=TEST
[   31.176244] Hardware name: linux,dummy-virt (DT)
[   31.176301] Call trace:
[   31.176354]  show_stack+0x20/0x38 (C)
[   31.176527]  dump_stack_lvl+0x8c/0xd0
[   31.176733]  print_report+0x118/0x608
[   31.176904]  kasan_report+0xdc/0x128
[   31.177026]  kasan_check_range+0x100/0x1a8
[   31.177204]  __asan_memmove+0x3c/0x98
[   31.177560]  kmalloc_memmove_invalid_size+0x154/0x2e0
[   31.177688]  kunit_try_run_case+0x170/0x3f0
[   31.177990]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   31.178189]  kthread+0x328/0x630
[   31.178652]  ret_from_fork+0x10/0x20
[   31.179045] 
[   31.179227] Allocated by task 214:
[   31.179352]  kasan_save_stack+0x3c/0x68
[   31.179605]  kasan_save_track+0x20/0x40
[   31.179830]  kasan_save_alloc_info+0x40/0x58
[   31.179920]  __kasan_kmalloc+0xd4/0xd8
[   31.180174]  __kmalloc_cache_noprof+0x16c/0x3c0
[   31.180364]  kmalloc_memmove_invalid_size+0xb0/0x2e0
[   31.180581]  kunit_try_run_case+0x170/0x3f0
[   31.180846]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   31.180953]  kthread+0x328/0x630
[   31.181067]  ret_from_fork+0x10/0x20
[   31.181126] 
[   31.181177] The buggy address belongs to the object at fff00000c5a6ae80
[   31.181177]  which belongs to the cache kmalloc-64 of size 64
[   31.181517] The buggy address is located 4 bytes inside of
[   31.181517]  allocated 64-byte region [fff00000c5a6ae80, fff00000c5a6aec0)
[   31.181916] 
[   31.181961] The buggy address belongs to the physical page:
[   31.182135] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a6a
[   31.182195] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   31.182812] page_type: f5(slab)
[   31.182875] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000
[   31.183051] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
[   31.183397] page dumped because: kasan: bad access detected
[   31.183445] 
[   31.183848] Memory state around the buggy address:
[   31.183910]  fff00000c5a6ad80: 00 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc
[   31.184082]  fff00000c5a6ae00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   31.184336] >fff00000c5a6ae80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[   31.184466]                                            ^
[   31.184591]  fff00000c5a6af00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   31.184684]  fff00000c5a6af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   31.184724] ==================================================================

[   23.351414] ==================================================================
[   23.351907] BUG: KASAN: slab-out-of-bounds in kmalloc_memmove_invalid_size+0x16f/0x330
[   23.352212] Read of size 64 at addr ffff888105abc984 by task kunit_try_catch/231
[   23.352575] 
[   23.352654] CPU: 0 UID: 0 PID: 231 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4-next-20250703 #1 PREEMPT(voluntary) 
[   23.352699] Tainted: [B]=BAD_PAGE, [N]=TEST
[   23.352711] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   23.352847] Call Trace:
[   23.352861]  <TASK>
[   23.352877]  dump_stack_lvl+0x73/0xb0
[   23.352905]  print_report+0xd1/0x650
[   23.352926]  ? __virt_addr_valid+0x1db/0x2d0
[   23.352949]  ? kmalloc_memmove_invalid_size+0x16f/0x330
[   23.352973]  ? kasan_complete_mode_report_info+0x2a/0x200
[   23.353007]  ? kmalloc_memmove_invalid_size+0x16f/0x330
[   23.353031]  kasan_report+0x141/0x180
[   23.353054]  ? kmalloc_memmove_invalid_size+0x16f/0x330
[   23.353083]  kasan_check_range+0x10c/0x1c0
[   23.353106]  __asan_memmove+0x27/0x70
[   23.353129]  kmalloc_memmove_invalid_size+0x16f/0x330
[   23.353242]  ? __pfx_kmalloc_memmove_invalid_size+0x10/0x10
[   23.353268]  ? __schedule+0x10cc/0x2b60
[   23.353293]  ? __pfx_read_tsc+0x10/0x10
[   23.353319]  ? ktime_get_ts64+0x86/0x230
[   23.353344]  kunit_try_run_case+0x1a5/0x480
[   23.353369]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.353392]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   23.353412]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   23.353437]  ? __kthread_parkme+0x82/0x180
[   23.353471]  ? preempt_count_sub+0x50/0x80
[   23.353493]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.353518]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.353541]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   23.353565]  kthread+0x337/0x6f0
[   23.353584]  ? trace_preempt_on+0x20/0xc0
[   23.353606]  ? __pfx_kthread+0x10/0x10
[   23.353626]  ? _raw_spin_unlock_irq+0x47/0x80
[   23.353650]  ? calculate_sigpending+0x7b/0xa0
[   23.353673]  ? __pfx_kthread+0x10/0x10
[   23.353694]  ret_from_fork+0x116/0x1d0
[   23.353714]  ? __pfx_kthread+0x10/0x10
[   23.353734]  ret_from_fork_asm+0x1a/0x30
[   23.353764]  </TASK>
[   23.353775] 
[   23.361106] Allocated by task 231:
[   23.361861]  kasan_save_stack+0x45/0x70
[   23.362360]  kasan_save_track+0x18/0x40
[   23.362503]  kasan_save_alloc_info+0x3b/0x50
[   23.363081]  __kasan_kmalloc+0xb7/0xc0
[   23.363693]  __kmalloc_cache_noprof+0x189/0x420
[   23.364028]  kmalloc_memmove_invalid_size+0xac/0x330
[   23.364389]  kunit_try_run_case+0x1a5/0x480
[   23.364602]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.364832]  kthread+0x337/0x6f0
[   23.364972]  ret_from_fork+0x116/0x1d0
[   23.365132]  ret_from_fork_asm+0x1a/0x30
[   23.365665] 
[   23.365762] The buggy address belongs to the object at ffff888105abc980
[   23.365762]  which belongs to the cache kmalloc-64 of size 64
[   23.366836] The buggy address is located 4 bytes inside of
[   23.366836]  allocated 64-byte region [ffff888105abc980, ffff888105abc9c0)
[   23.367719] 
[   23.367817] The buggy address belongs to the physical page:
[   23.368044] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105abc
[   23.368749] flags: 0x200000000000000(node=0|zone=2)
[   23.369104] page_type: f5(slab)
[   23.369669] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000
[   23.370001] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
[   23.370761] page dumped because: kasan: bad access detected
[   23.371118] 
[   23.371474] Memory state around the buggy address:
[   23.371695]  ffff888105abc880: 00 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc
[   23.371980]  ffff888105abc900: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   23.372639] >ffff888105abc980: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[   23.373131]                                            ^
[   23.373608]  ffff888105abca00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   23.374081]  ffff888105abca80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   23.374463] ==================================================================