Hay
Date
July 18, 2025, 11:11 p.m.

Environment
qemu-arm64
qemu-x86_64

[   17.553068] ==================================================================
[   17.553696] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x230/0x270
[   17.554013] Read of size 1 at addr ffffa1421b54f58d by task kunit_try_catch/245
[   17.554119] 
[   17.554239] CPU: 0 UID: 0 PID: 245 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT 
[   17.554368] Tainted: [B]=BAD_PAGE, [N]=TEST
[   17.554404] Hardware name: linux,dummy-virt (DT)
[   17.554435] Call trace:
[   17.554458]  show_stack+0x20/0x38 (C)
[   17.554780]  dump_stack_lvl+0x8c/0xd0
[   17.554911]  print_report+0x310/0x5d0
[   17.554989]  kasan_report+0xdc/0x128
[   17.555324]  __asan_report_load1_noabort+0x20/0x30
[   17.555399]  kasan_global_oob_right+0x230/0x270
[   17.555695]  kunit_try_run_case+0x170/0x3f0
[   17.555833]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   17.555909]  kthread+0x328/0x630
[   17.555952]  ret_from_fork+0x10/0x20
[   17.556031] 
[   17.556099] The buggy address belongs to the variable:
[   17.556138]  global_array+0xd/0x40
[   17.556218] 
[   17.556289] The buggy address ffffa1421b54f58d belongs to a vmalloc virtual mapping
[   17.556412] The buggy address belongs to the physical page:
[   17.556460] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x47d4f
[   17.556524] flags: 0x3fffe0000002000(reserved|node=0|zone=0|lastcpupid=0x1ffff)
[   17.556593] raw: 03fffe0000002000 ffffc1ffc01f53c8 ffffc1ffc01f53c8 0000000000000000
[   17.556644] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   17.556683] page dumped because: kasan: bad access detected
[   17.556715] 
[   17.556735] Memory state around the buggy address:
[   17.556779]  ffffa1421b54f480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   17.556822]  ffffa1421b54f500: 00 00 00 00 00 00 00 00 02 f9 f9 f9 f9 f9 f9 f9
[   17.556875] >ffffa1421b54f580: 00 02 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9
[   17.556928]                       ^
[   17.556972]  ffffa1421b54f600: 00 f9 f9 f9 f9 f9 f9 f9 01 f9 f9 f9 f9 f9 f9 f9
[   17.557023]  ffffa1421b54f680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   17.557072] ==================================================================

[   13.949361] ==================================================================
[   13.949989] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x286/0x2d0
[   13.951619] Read of size 1 at addr ffffffff88263e8d by task kunit_try_catch/264
[   13.952672] 
[   13.952804] CPU: 0 UID: 0 PID: 264 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   13.952852] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.952865] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.952887] Call Trace:
[   13.952900]  <TASK>
[   13.952915]  dump_stack_lvl+0x73/0xb0
[   13.952953]  print_report+0xd1/0x610
[   13.952976]  ? __virt_addr_valid+0x1db/0x2d0
[   13.952999]  ? kasan_global_oob_right+0x286/0x2d0
[   13.953021]  ? kasan_addr_to_slab+0x11/0xa0
[   13.953386]  ? kasan_global_oob_right+0x286/0x2d0
[   13.953413]  kasan_report+0x141/0x180
[   13.953436]  ? kasan_global_oob_right+0x286/0x2d0
[   13.953463]  __asan_report_load1_noabort+0x18/0x20
[   13.953594]  kasan_global_oob_right+0x286/0x2d0
[   13.953617]  ? __pfx_kasan_global_oob_right+0x10/0x10
[   13.953642]  ? __schedule+0x10cc/0x2b60
[   13.953665]  ? __pfx_read_tsc+0x10/0x10
[   13.953686]  ? ktime_get_ts64+0x86/0x230
[   13.953710]  kunit_try_run_case+0x1a5/0x480
[   13.953735]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.953757]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.953782]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.953805]  ? __kthread_parkme+0x82/0x180
[   13.953825]  ? preempt_count_sub+0x50/0x80
[   13.953848]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.953872]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.953895]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.953920]  kthread+0x337/0x6f0
[   13.953939]  ? trace_preempt_on+0x20/0xc0
[   13.953962]  ? __pfx_kthread+0x10/0x10
[   13.953982]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.954003]  ? calculate_sigpending+0x7b/0xa0
[   13.954041]  ? __pfx_kthread+0x10/0x10
[   13.954062]  ret_from_fork+0x116/0x1d0
[   13.954081]  ? __pfx_kthread+0x10/0x10
[   13.954101]  ret_from_fork_asm+0x1a/0x30
[   13.954131]  </TASK>
[   13.954141] 
[   13.967321] The buggy address belongs to the variable:
[   13.967899]  global_array+0xd/0x40
[   13.968247] 
[   13.968542] The buggy address belongs to the physical page:
[   13.968881] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x55663
[   13.969316] flags: 0x100000000002000(reserved|node=0|zone=1)
[   13.969866] raw: 0100000000002000 ffffea00015598c8 ffffea00015598c8 0000000000000000
[   13.970370] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   13.970864] page dumped because: kasan: bad access detected
[   13.971270] 
[   13.971382] Memory state around the buggy address:
[   13.971932]  ffffffff88263d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.972383]  ffffffff88263e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.973007] >ffffffff88263e80: 00 02 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
[   13.973360]                       ^
[   13.973559]  ffffffff88263f00: 04 f9 f9 f9 f9 f9 f9 f9 02 f9 f9 f9 f9 f9 f9 f9
[   13.973983]  ffffffff88263f80: 01 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
[   13.974362] ==================================================================