Hay
Date
July 5, 2025, 5:09 p.m.

Environment
qemu-arm64
qemu-x86_64

[   20.273643] ==================================================================
[   20.273707] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x230/0x270
[   20.273922] Read of size 1 at addr ffff986348d4f5cd by task kunit_try_catch/245
[   20.273997] 
[   20.274041] CPU: 0 UID: 0 PID: 245 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT 
[   20.274222] Tainted: [B]=BAD_PAGE, [N]=TEST
[   20.274253] Hardware name: linux,dummy-virt (DT)
[   20.274466] Call trace:
[   20.274501]  show_stack+0x20/0x38 (C)
[   20.274579]  dump_stack_lvl+0x8c/0xd0
[   20.274672]  print_report+0x310/0x608
[   20.274732]  kasan_report+0xdc/0x128
[   20.274778]  __asan_report_load1_noabort+0x20/0x30
[   20.274942]  kasan_global_oob_right+0x230/0x270
[   20.275067]  kunit_try_run_case+0x170/0x3f0
[   20.275117]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   20.275169]  kthread+0x328/0x630
[   20.275212]  ret_from_fork+0x10/0x20
[   20.275270] 
[   20.275466] The buggy address belongs to the variable:
[   20.275644]  global_array+0xd/0x40
[   20.275888] 
[   20.276084] The buggy address belongs to the virtual mapping at
[   20.276084]  [ffff986346f00000, ffff986348e01000) created by:
[   20.276084]  paging_init+0x66c/0x7d0
[   20.276197] 
[   20.276604] The buggy address belongs to the physical page:
[   20.276722] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x47d4f
[   20.276978] flags: 0x3fffe0000002000(reserved|node=0|zone=0|lastcpupid=0x1ffff)
[   20.277127] raw: 03fffe0000002000 ffffc1ffc01f53c8 ffffc1ffc01f53c8 0000000000000000
[   20.277253] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   20.277403] page dumped because: kasan: bad access detected
[   20.277451] 
[   20.277468] Memory state around the buggy address:
[   20.277513]  ffff986348d4f480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   20.277578]  ffff986348d4f500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   20.277631] >ffff986348d4f580: 02 f9 f9 f9 f9 f9 f9 f9 00 02 f9 f9 f9 f9 f9 f9
[   20.277678]                                               ^
[   20.277714]  ffff986348d4f600: 04 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
[   20.277757]  ffff986348d4f680: 01 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
[   20.277804] ==================================================================

[   13.365901] ==================================================================
[   13.366444] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x286/0x2d0
[   13.366960] Read of size 1 at addr ffffffffbe061e8d by task kunit_try_catch/263
[   13.367493] 
[   13.367630] CPU: 0 UID: 0 PID: 263 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   13.367677] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.367689] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.367712] Call Trace:
[   13.367724]  <TASK>
[   13.367741]  dump_stack_lvl+0x73/0xb0
[   13.367770]  print_report+0xd1/0x650
[   13.367792]  ? __virt_addr_valid+0x1db/0x2d0
[   13.367814]  ? kasan_global_oob_right+0x286/0x2d0
[   13.367836]  ? kasan_addr_to_slab+0x11/0xa0
[   13.367856]  ? kasan_global_oob_right+0x286/0x2d0
[   13.367878]  kasan_report+0x141/0x180
[   13.367909]  ? kasan_global_oob_right+0x286/0x2d0
[   13.367935]  __asan_report_load1_noabort+0x18/0x20
[   13.367959]  kasan_global_oob_right+0x286/0x2d0
[   13.367981]  ? __pfx_kasan_global_oob_right+0x10/0x10
[   13.368005]  ? __schedule+0x10cc/0x2b60
[   13.368026]  ? __pfx_read_tsc+0x10/0x10
[   13.368047]  ? ktime_get_ts64+0x86/0x230
[   13.368070]  kunit_try_run_case+0x1a5/0x480
[   13.368095]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.368116]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.368140]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.368163]  ? __kthread_parkme+0x82/0x180
[   13.368183]  ? preempt_count_sub+0x50/0x80
[   13.368226]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.368251]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.368274]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.368297]  kthread+0x337/0x6f0
[   13.368317]  ? trace_preempt_on+0x20/0xc0
[   13.368340]  ? __pfx_kthread+0x10/0x10
[   13.368360]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.368381]  ? calculate_sigpending+0x7b/0xa0
[   13.368404]  ? __pfx_kthread+0x10/0x10
[   13.368425]  ret_from_fork+0x116/0x1d0
[   13.368443]  ? __pfx_kthread+0x10/0x10
[   13.368475]  ret_from_fork_asm+0x1a/0x30
[   13.368505]  </TASK>
[   13.368516] 
[   13.375541] The buggy address belongs to the variable:
[   13.375721]  global_array+0xd/0x40
[   13.375918] 
[   13.376029] The buggy address belongs to the physical page:
[   13.376282] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3a861
[   13.377126] flags: 0x100000000002000(reserved|node=0|zone=1)
[   13.377557] raw: 0100000000002000 ffffea0000ea1848 ffffea0000ea1848 0000000000000000
[   13.377972] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   13.378390] page dumped because: kasan: bad access detected
[   13.378661] 
[   13.378761] Memory state around the buggy address:
[   13.378941]  ffffffffbe061d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.379299]  ffffffffbe061e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.379603] >ffffffffbe061e80: 00 02 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
[   13.379910]                       ^
[   13.380039]  ffffffffbe061f00: 04 f9 f9 f9 f9 f9 f9 f9 02 f9 f9 f9 f9 f9 f9 f9
[   13.380289]  ffffffffbe061f80: 01 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
[   13.380871] ==================================================================