Hay
Date
May 29, 2025, 7:10 a.m.

Environment
qemu-arm64
qemu-x86_64

[   24.477477] ==================================================================
[   24.477670] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x230/0x270
[   24.477828] Read of size 1 at addr ffffa940d57b258d by task kunit_try_catch/245
[   24.477934] 
[   24.478029] CPU: 0 UID: 0 PID: 245 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-next-20250529 #1 PREEMPT 
[   24.478209] Tainted: [B]=BAD_PAGE, [N]=TEST
[   24.478265] Hardware name: linux,dummy-virt (DT)
[   24.478336] Call trace:
[   24.478464]  show_stack+0x20/0x38 (C)
[   24.478588]  dump_stack_lvl+0x8c/0xd0
[   24.478699]  print_report+0x310/0x608
[   24.478793]  kasan_report+0xdc/0x128
[   24.478905]  __asan_report_load1_noabort+0x20/0x30
[   24.479017]  kasan_global_oob_right+0x230/0x270
[   24.479120]  kunit_try_run_case+0x170/0x3f0
[   24.479248]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   24.479372]  kthread+0x328/0x630
[   24.479479]  ret_from_fork+0x10/0x20
[   24.479770] 
[   24.479885] The buggy address belongs to the variable:
[   24.479957]  global_array+0xd/0x40
[   24.480062] 
[   24.480205] The buggy address belongs to the virtual mapping at
[   24.480205]  [ffffa940d3950000, ffffa940d5871000) created by:
[   24.480205]  paging_init+0x66c/0x7d0
[   24.480419] 
[   24.480552] The buggy address belongs to the physical page:
[   24.480641] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x47db2
[   24.480761] flags: 0x3fffe0000002000(reserved|node=0|zone=0|lastcpupid=0x1ffff)
[   24.480920] raw: 03fffe0000002000 ffffc1ffc01f6c88 ffffc1ffc01f6c88 0000000000000000
[   24.481041] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   24.481131] page dumped because: kasan: bad access detected
[   24.481191] 
[   24.481230] Memory state around the buggy address:
[   24.481314]  ffffa940d57b2480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   24.481478]  ffffa940d57b2500: 00 00 00 00 00 00 00 00 02 f9 f9 f9 f9 f9 f9 f9
[   24.481596] >ffffa940d57b2580: 00 02 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9
[   24.481675]                       ^
[   24.481743]  ffffa940d57b2600: 00 f9 f9 f9 f9 f9 f9 f9 01 f9 f9 f9 f9 f9 f9 f9
[   24.481827]  ffffa940d57b2680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   24.481911] ==================================================================


[   12.637039] ==================================================================
[   12.637582] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x286/0x2d0
[   12.638246] Read of size 1 at addr ffffffff8b07ae4d by task kunit_try_catch/262
[   12.638563] 
[   12.638710] CPU: 0 UID: 0 PID: 262 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-next-20250529 #1 PREEMPT(voluntary) 
[   12.638762] Tainted: [B]=BAD_PAGE, [N]=TEST
[   12.638775] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   12.638798] Call Trace:
[   12.638812]  <TASK>
[   12.638830]  dump_stack_lvl+0x73/0xb0
[   12.638859]  print_report+0xd1/0x650
[   12.638883]  ? __virt_addr_valid+0x1db/0x2d0
[   12.638908]  ? kasan_global_oob_right+0x286/0x2d0
[   12.638930]  ? kasan_addr_to_slab+0x11/0xa0
[   12.638951]  ? kasan_global_oob_right+0x286/0x2d0
[   12.638975]  kasan_report+0x141/0x180
[   12.638997]  ? kasan_global_oob_right+0x286/0x2d0
[   12.639025]  __asan_report_load1_noabort+0x18/0x20
[   12.639046]  kasan_global_oob_right+0x286/0x2d0
[   12.639069]  ? __pfx_kasan_global_oob_right+0x10/0x10
[   12.639094]  ? __schedule+0x10cc/0x2b60
[   12.639119]  ? __pfx_read_tsc+0x10/0x10
[   12.639142]  ? ktime_get_ts64+0x86/0x230
[   12.639168]  kunit_try_run_case+0x1a5/0x480
[   12.639192]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.639212]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   12.639236]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   12.639261]  ? __kthread_parkme+0x82/0x180
[   12.639281]  ? preempt_count_sub+0x50/0x80
[   12.639305]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.639327]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.639351]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   12.639376]  kthread+0x337/0x6f0
[   12.639395]  ? trace_preempt_on+0x20/0xc0
[   12.639419]  ? __pfx_kthread+0x10/0x10
[   12.639440]  ? _raw_spin_unlock_irq+0x47/0x80
[   12.639463]  ? calculate_sigpending+0x7b/0xa0
[   12.639487]  ? __pfx_kthread+0x10/0x10
[   12.639508]  ret_from_fork+0x116/0x1d0
[   12.639526]  ? __pfx_kthread+0x10/0x10
[   12.639547]  ret_from_fork_asm+0x1a/0x30
[   12.639578]  </TASK>
[   12.639588] 
[   12.653144] The buggy address belongs to the variable:
[   12.653665]  global_array+0xd/0x40
[   12.654266] 
[   12.654491] The buggy address belongs to the physical page:
[   12.654697] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15cc7a
[   12.655624] flags: 0x200000000002000(reserved|node=0|zone=2)
[   12.656280] raw: 0200000000002000 ffffea0005731e88 ffffea0005731e88 0000000000000000
[   12.656640] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   12.657212] page dumped because: kasan: bad access detected
[   12.657739] 
[   12.657923] Memory state around the buggy address:
[   12.658404]  ffffffff8b07ad00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   12.659025]  ffffffff8b07ad80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   12.659493] >ffffffff8b07ae00: 00 00 00 00 00 00 00 00 00 02 f9 f9 f9 f9 f9 f9
[   12.659735]                                               ^
[   12.660332]  ffffffff8b07ae80: 00 f9 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9
[   12.661036]  ffffffff8b07af00: 02 f9 f9 f9 f9 f9 f9 f9 01 f9 f9 f9 f9 f9 f9 f9
[   12.661683] ==================================================================