Hay
Date
July 9, 2025, 12:11 a.m.

Environment
qemu-arm64
qemu-x86_64

[   21.815438] ==================================================================
[   21.815510] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x230/0x270
[   21.815607] Read of size 1 at addr ffffaa561734f58d by task kunit_try_catch/246
[   21.815660] 
[   21.815938] CPU: 1 UID: 0 PID: 246 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5 #1 PREEMPT 
[   21.816038] Tainted: [B]=BAD_PAGE, [N]=TEST
[   21.816200] Hardware name: linux,dummy-virt (DT)
[   21.816442] Call trace:
[   21.816488]  show_stack+0x20/0x38 (C)
[   21.816553]  dump_stack_lvl+0x8c/0xd0
[   21.816868]  print_report+0x310/0x608
[   21.817015]  kasan_report+0xdc/0x128
[   21.817095]  __asan_report_load1_noabort+0x20/0x30
[   21.817324]  kasan_global_oob_right+0x230/0x270
[   21.817494]  kunit_try_run_case+0x170/0x3f0
[   21.817646]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   21.817718]  kthread+0x328/0x630
[   21.817891]  ret_from_fork+0x10/0x20
[   21.818118] 
[   21.818187] The buggy address belongs to the variable:
[   21.818229]  global_array+0xd/0x40
[   21.818333] 
[   21.818454] The buggy address belongs to the virtual mapping at
[   21.818454]  [ffffaa5615500000, ffffaa5617401000) created by:
[   21.818454]  paging_init+0x66c/0x7d0
[   21.818559] 
[   21.818643] The buggy address belongs to the physical page:
[   21.818677] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x47d4f
[   21.818750] flags: 0x3fffe0000002000(reserved|node=0|zone=0|lastcpupid=0x1ffff)
[   21.818821] raw: 03fffe0000002000 ffffc1ffc01f53c8 ffffc1ffc01f53c8 0000000000000000
[   21.818872] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   21.818927] page dumped because: kasan: bad access detected
[   21.818959] 
[   21.818992] Memory state around the buggy address:
[   21.819043]  ffffaa561734f480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   21.819097]  ffffaa561734f500: 00 00 00 00 00 00 00 00 02 f9 f9 f9 f9 f9 f9 f9
[   21.819141] >ffffaa561734f580: 00 02 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9
[   21.819180]                       ^
[   21.819219]  ffffaa561734f600: 00 f9 f9 f9 f9 f9 f9 f9 01 f9 f9 f9 f9 f9 f9 f9
[   21.819262]  ffffaa561734f680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   21.819310] ==================================================================

[   14.459449] ==================================================================
[   14.459885] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x286/0x2d0
[   14.460822] Read of size 1 at addr ffffffff94863e8d by task kunit_try_catch/262
[   14.461366] 
[   14.461839] CPU: 1 UID: 0 PID: 262 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[   14.461891] Tainted: [B]=BAD_PAGE, [N]=TEST
[   14.461905] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   14.461928] Call Trace:
[   14.461956]  <TASK>
[   14.461975]  dump_stack_lvl+0x73/0xb0
[   14.462010]  print_report+0xd1/0x650
[   14.462033]  ? __virt_addr_valid+0x1db/0x2d0
[   14.462057]  ? kasan_global_oob_right+0x286/0x2d0
[   14.462079]  ? kasan_addr_to_slab+0x11/0xa0
[   14.462100]  ? kasan_global_oob_right+0x286/0x2d0
[   14.462121]  kasan_report+0x141/0x180
[   14.462143]  ? kasan_global_oob_right+0x286/0x2d0
[   14.462169]  __asan_report_load1_noabort+0x18/0x20
[   14.462194]  kasan_global_oob_right+0x286/0x2d0
[   14.462218]  ? __pfx_kasan_global_oob_right+0x10/0x10
[   14.462243]  ? __schedule+0x10cc/0x2b60
[   14.462266]  ? __pfx_read_tsc+0x10/0x10
[   14.462288]  ? ktime_get_ts64+0x86/0x230
[   14.462312]  kunit_try_run_case+0x1a5/0x480
[   14.462338]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.462360]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   14.462384]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   14.462479]  ? __kthread_parkme+0x82/0x180
[   14.462502]  ? preempt_count_sub+0x50/0x80
[   14.462526]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.462551]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.462576]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   14.462602]  kthread+0x337/0x6f0
[   14.462620]  ? trace_preempt_on+0x20/0xc0
[   14.462645]  ? __pfx_kthread+0x10/0x10
[   14.462666]  ? _raw_spin_unlock_irq+0x47/0x80
[   14.462688]  ? calculate_sigpending+0x7b/0xa0
[   14.462720]  ? __pfx_kthread+0x10/0x10
[   14.462742]  ret_from_fork+0x116/0x1d0
[   14.462762]  ? __pfx_kthread+0x10/0x10
[   14.462783]  ret_from_fork_asm+0x1a/0x30
[   14.462815]  </TASK>
[   14.462825] 
[   14.473758] The buggy address belongs to the variable:
[   14.474012]  global_array+0xd/0x40
[   14.474166] 
[   14.474259] The buggy address belongs to the physical page:
[   14.474578] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109c63
[   14.475082] flags: 0x200000000002000(reserved|node=0|zone=2)
[   14.475396] raw: 0200000000002000 ffffea00042718c8 ffffea00042718c8 0000000000000000
[   14.475660] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   14.475967] page dumped because: kasan: bad access detected
[   14.476220] 
[   14.476319] Memory state around the buggy address:
[   14.476513]  ffffffff94863d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   14.476724]  ffffffff94863e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   14.477006] >ffffffff94863e80: 00 02 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
[   14.477324]                       ^
[   14.477554]  ffffffff94863f00: 04 f9 f9 f9 f9 f9 f9 f9 02 f9 f9 f9 f9 f9 f9 f9
[   14.478190]  ffffffff94863f80: 01 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
[   14.478459] ==================================================================