Hay
Date
July 25, 2025, 3:13 a.m.

Environment
qemu-arm64
qemu-x86_64

[   32.441684] ==================================================================
[   32.441752] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_16+0x150/0x2f8
[   32.441891] Write of size 16 at addr fff00000c9726869 by task kunit_try_catch/210
[   32.441939] 
[   32.442213] CPU: 1 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G    B   W        N  6.16.0-rc7-next-20250725 #1 PREEMPT 
[   32.442446] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST
[   32.442490] Hardware name: linux,dummy-virt (DT)
[   32.442520] Call trace:
[   32.442542]  show_stack+0x20/0x38 (C)
[   32.442786]  dump_stack_lvl+0x8c/0xd0
[   32.442972]  print_report+0x118/0x5e8
[   32.443069]  kasan_report+0xdc/0x128
[   32.443146]  kasan_check_range+0x100/0x1a8
[   32.443193]  __asan_memset+0x34/0x78
[   32.443236]  kmalloc_oob_memset_16+0x150/0x2f8
[   32.443282]  kunit_try_run_case+0x170/0x3f0
[   32.443327]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.443383]  kthread+0x328/0x630
[   32.443686]  ret_from_fork+0x10/0x20
[   32.444087] 
[   32.444153] Allocated by task 210:
[   32.444223]  kasan_save_stack+0x3c/0x68
[   32.444314]  kasan_save_track+0x20/0x40
[   32.444545]  kasan_save_alloc_info+0x40/0x58
[   32.444704]  __kasan_kmalloc+0xd4/0xd8
[   32.444896]  __kmalloc_cache_noprof+0x16c/0x3c0
[   32.445060]  kmalloc_oob_memset_16+0xb0/0x2f8
[   32.445194]  kunit_try_run_case+0x170/0x3f0
[   32.445619]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.445860]  kthread+0x328/0x630
[   32.445975]  ret_from_fork+0x10/0x20
[   32.446215] 
[   32.446281] The buggy address belongs to the object at fff00000c9726800
[   32.446281]  which belongs to the cache kmalloc-128 of size 128
[   32.446573] The buggy address is located 105 bytes inside of
[   32.446573]  allocated 120-byte region [fff00000c9726800, fff00000c9726878)
[   32.446776] 
[   32.446846] The buggy address belongs to the physical page:
[   32.447074] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109726
[   32.447399] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   32.447456] page_type: f5(slab)
[   32.447497] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000
[   32.447555] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   32.447595] page dumped because: kasan: bad access detected
[   32.447627] 
[   32.447656] Memory state around the buggy address:
[   32.447689]  fff00000c9726700: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   32.448100]  fff00000c9726780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.448226] >fff00000c9726800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   32.448268]                                                                 ^
[   32.448458]  fff00000c9726880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.448655]  fff00000c9726900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.448765] ==================================================================

[   25.926274] ==================================================================
[   25.927414] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_16+0x166/0x330
[   25.927716] Write of size 16 at addr ffff888106253069 by task kunit_try_catch/227
[   25.927956] 
[   25.928042] CPU: 1 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) 
[   25.928180] Tainted: [B]=BAD_PAGE, [N]=TEST
[   25.928196] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   25.928218] Call Trace:
[   25.928232]  <TASK>
[   25.928250]  dump_stack_lvl+0x73/0xb0
[   25.928282]  print_report+0xd1/0x640
[   25.928305]  ? __virt_addr_valid+0x1db/0x2d0
[   25.928328]  ? kmalloc_oob_memset_16+0x166/0x330
[   25.928350]  ? kasan_complete_mode_report_info+0x2a/0x200
[   25.928376]  ? kmalloc_oob_memset_16+0x166/0x330
[   25.928398]  kasan_report+0x141/0x180
[   25.928421]  ? kmalloc_oob_memset_16+0x166/0x330
[   25.928449]  kasan_check_range+0x10c/0x1c0
[   25.928473]  __asan_memset+0x27/0x50
[   25.928497]  kmalloc_oob_memset_16+0x166/0x330
[   25.928519]  ? __kasan_check_write+0x18/0x20
[   25.928542]  ? __pfx_kmalloc_oob_memset_16+0x10/0x10
[   25.928565]  ? sysvec_apic_timer_interrupt+0x50/0x90
[   25.928590]  ? trace_hardirqs_on+0x37/0xe0
[   25.928613]  ? __pfx_read_tsc+0x10/0x10
[   25.928635]  ? ktime_get_ts64+0x86/0x230
[   25.928660]  kunit_try_run_case+0x1a5/0x480
[   25.928684]  ? __pfx_kunit_try_run_case+0x10/0x10
[   25.928708]  ? queued_spin_lock_slowpath+0x116/0xb40
[   25.928731]  ? __kthread_parkme+0x82/0x180
[   25.928751]  ? preempt_count_sub+0x50/0x80
[   25.928775]  ? __pfx_kunit_try_run_case+0x10/0x10
[   25.928798]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.928874]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   25.928899]  kthread+0x337/0x6f0
[   25.928919]  ? trace_preempt_on+0x20/0xc0
[   25.928953]  ? __pfx_kthread+0x10/0x10
[   25.928974]  ? _raw_spin_unlock_irq+0x47/0x80
[   25.928999]  ? calculate_sigpending+0x7b/0xa0
[   25.929022]  ? __pfx_kthread+0x10/0x10
[   25.929044]  ret_from_fork+0x116/0x1d0
[   25.929071]  ? __pfx_kthread+0x10/0x10
[   25.929092]  ret_from_fork_asm+0x1a/0x30
[   25.929128]  </TASK>
[   25.929139] 
[   25.938874] Allocated by task 227:
[   25.939334]  kasan_save_stack+0x45/0x70
[   25.939534]  kasan_save_track+0x18/0x40
[   25.939713]  kasan_save_alloc_info+0x3b/0x50
[   25.940177]  __kasan_kmalloc+0xb7/0xc0
[   25.940369]  __kmalloc_cache_noprof+0x189/0x420
[   25.940548]  kmalloc_oob_memset_16+0xac/0x330
[   25.940765]  kunit_try_run_case+0x1a5/0x480
[   25.941097]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.941471]  kthread+0x337/0x6f0
[   25.941635]  ret_from_fork+0x116/0x1d0
[   25.941805]  ret_from_fork_asm+0x1a/0x30
[   25.942395] 
[   25.942486] The buggy address belongs to the object at ffff888106253000
[   25.942486]  which belongs to the cache kmalloc-128 of size 128
[   25.943212] The buggy address is located 105 bytes inside of
[   25.943212]  allocated 120-byte region [ffff888106253000, ffff888106253078)
[   25.943713] 
[   25.943806] The buggy address belongs to the physical page:
[   25.944031] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106253
[   25.944366] flags: 0x200000000000000(node=0|zone=2)
[   25.944581] page_type: f5(slab)
[   25.944729] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   25.945532] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   25.945822] page dumped because: kasan: bad access detected
[   25.946387] 
[   25.946573] Memory state around the buggy address:
[   25.946789]  ffff888106252f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.947320]  ffff888106252f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.947699] >ffff888106253000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   25.948121]                                                                 ^
[   25.948554]  ffff888106253080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.949026]  ffff888106253100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.949348] ==================================================================