Hay
Date
July 1, 2025, 11:08 a.m.

Environment
qemu-arm64
qemu-x86_64

[   20.896104] ==================================================================
[   20.896235] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x230/0x270
[   20.896318] Read of size 1 at addr ffff9bbfe954f5cd by task kunit_try_catch/246
[   20.896375] 
[   20.896429] CPU: 0 UID: 0 PID: 246 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT 
[   20.896935] Tainted: [B]=BAD_PAGE, [N]=TEST
[   20.896986] Hardware name: linux,dummy-virt (DT)
[   20.897212] Call trace:
[   20.897366]  show_stack+0x20/0x38 (C)
[   20.897460]  dump_stack_lvl+0x8c/0xd0
[   20.897837]  print_report+0x310/0x608
[   20.898060]  kasan_report+0xdc/0x128
[   20.898294]  __asan_report_load1_noabort+0x20/0x30
[   20.898397]  kasan_global_oob_right+0x230/0x270
[   20.898943]  kunit_try_run_case+0x170/0x3f0
[   20.899230]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   20.899437]  kthread+0x328/0x630
[   20.899620]  ret_from_fork+0x10/0x20
[   20.899857] 
[   20.900146] The buggy address belongs to the variable:
[   20.900190]  global_array+0xd/0x40
[   20.900578] 
[   20.900874] The buggy address belongs to the virtual mapping at
[   20.900874]  [ffff9bbfe7700000, ffff9bbfe9601000) created by:
[   20.900874]  paging_init+0x66c/0x7d0
[   20.901108] 
[   20.901661] The buggy address belongs to the physical page:
[   20.901779] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x47d4f
[   20.901989] flags: 0x3fffe0000002000(reserved|node=0|zone=0|lastcpupid=0x1ffff)
[   20.902126] raw: 03fffe0000002000 ffffc1ffc01f53c8 ffffc1ffc01f53c8 0000000000000000
[   20.902206] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   20.902620] page dumped because: kasan: bad access detected
[   20.902729] 
[   20.902805] Memory state around the buggy address:
[   20.903078]  ffff9bbfe954f480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   20.903365]  ffff9bbfe954f500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   20.903530] >ffff9bbfe954f580: 02 f9 f9 f9 f9 f9 f9 f9 00 02 f9 f9 f9 f9 f9 f9
[   20.903713]                                               ^
[   20.903789]  ffff9bbfe954f600: 04 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
[   20.903927]  ffff9bbfe954f680: 01 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
[   20.903973] ==================================================================

[   13.306107] ==================================================================
[   13.306617] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x286/0x2d0
[   13.307250] Read of size 1 at addr ffffffff8da61e8d by task kunit_try_catch/262
[   13.307559] 
[   13.307763] CPU: 0 UID: 0 PID: 262 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   13.307812] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.307824] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.307846] Call Trace:
[   13.307860]  <TASK>
[   13.307878]  dump_stack_lvl+0x73/0xb0
[   13.307909]  print_report+0xd1/0x650
[   13.307946]  ? __virt_addr_valid+0x1db/0x2d0
[   13.307970]  ? kasan_global_oob_right+0x286/0x2d0
[   13.307991]  ? kasan_addr_to_slab+0x11/0xa0
[   13.308011]  ? kasan_global_oob_right+0x286/0x2d0
[   13.308032]  kasan_report+0x141/0x180
[   13.308053]  ? kasan_global_oob_right+0x286/0x2d0
[   13.308078]  __asan_report_load1_noabort+0x18/0x20
[   13.308102]  kasan_global_oob_right+0x286/0x2d0
[   13.308123]  ? __pfx_kasan_global_oob_right+0x10/0x10
[   13.308147]  ? __schedule+0x10cc/0x2b60
[   13.308168]  ? __pfx_read_tsc+0x10/0x10
[   13.308190]  ? ktime_get_ts64+0x86/0x230
[   13.308214]  kunit_try_run_case+0x1a5/0x480
[   13.308239]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.308261]  ? irqentry_exit+0x2a/0x60
[   13.308285]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.308311]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.308335]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.308357]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.308390]  kthread+0x337/0x6f0
[   13.308417]  ? trace_preempt_on+0x20/0xc0
[   13.308440]  ? __pfx_kthread+0x10/0x10
[   13.308460]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.308483]  ? calculate_sigpending+0x7b/0xa0
[   13.308507]  ? __pfx_kthread+0x10/0x10
[   13.308528]  ret_from_fork+0x116/0x1d0
[   13.308547]  ? __pfx_kthread+0x10/0x10
[   13.308566]  ret_from_fork_asm+0x1a/0x30
[   13.308610]  </TASK>
[   13.308621] 
[   13.318542] The buggy address belongs to the variable:
[   13.318786]  global_array+0xd/0x40
[   13.319296] 
[   13.319499] The buggy address belongs to the physical page:
[   13.319986] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6b061
[   13.320592] flags: 0x100000000002000(reserved|node=0|zone=1)
[   13.321054] raw: 0100000000002000 ffffea0001ac1848 ffffea0001ac1848 0000000000000000
[   13.321493] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   13.321990] page dumped because: kasan: bad access detected
[   13.322240] 
[   13.322330] Memory state around the buggy address:
[   13.322546]  ffffffff8da61d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.323271]  ffffffff8da61e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.323846] >ffffffff8da61e80: 00 02 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
[   13.324300]                       ^
[   13.324484]  ffffffff8da61f00: 04 f9 f9 f9 f9 f9 f9 f9 02 f9 f9 f9 f9 f9 f9 f9
[   13.325096]  ffffffff8da61f80: 01 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
[   13.325382] ==================================================================