Hay
Date
June 25, 2025, 8:08 a.m.

Environment
qemu-arm64
qemu-x86_64

[   28.814688] ==================================================================
[   28.814745] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x230/0x270
[   28.814955] Read of size 1 at addr ffff9ec8b38c668d by task kunit_try_catch/257
[   28.815006] 
[   28.815042] CPU: 0 UID: 0 PID: 257 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc3-next-20250625 #1 PREEMPT 
[   28.815123] Tainted: [B]=BAD_PAGE, [N]=TEST
[   28.815280] Hardware name: linux,dummy-virt (DT)
[   28.815322] Call trace:
[   28.815408]  show_stack+0x20/0x38 (C)
[   28.815487]  dump_stack_lvl+0x8c/0xd0
[   28.815537]  print_report+0x310/0x608
[   28.815831]  kasan_report+0xdc/0x128
[   28.815928]  __asan_report_load1_noabort+0x20/0x30
[   28.816077]  kasan_global_oob_right+0x230/0x270
[   28.816158]  kunit_try_run_case+0x170/0x3f0
[   28.816210]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   28.816265]  kthread+0x328/0x630
[   28.816308]  ret_from_fork+0x10/0x20
[   28.816369] 
[   28.816840] The buggy address belongs to the variable:
[   28.816880]  global_array+0xd/0x40
[   28.816938] 
[   28.817013] The buggy address belongs to the virtual mapping at
[   28.817013]  [ffff9ec8b1a60000, ffff9ec8b3981000) created by:
[   28.817013]  paging_init+0x66c/0x7d0
[   28.817262] 
[   28.817637] The buggy address belongs to the physical page:
[   28.817724] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x47cc6
[   28.817839] flags: 0x3fffe0000002000(reserved|node=0|zone=0|lastcpupid=0x1ffff)
[   28.817938] raw: 03fffe0000002000 ffffc1ffc01f3188 ffffc1ffc01f3188 0000000000000000
[   28.818122] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   28.818382] page dumped because: kasan: bad access detected
[   28.818496] 
[   28.818574] Memory state around the buggy address:
[   28.818676]  ffff9ec8b38c6580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   28.818742]  ffff9ec8b38c6600: 00 00 00 00 00 00 00 00 02 f9 f9 f9 f9 f9 f9 f9
[   28.818889] >ffff9ec8b38c6680: 00 02 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9
[   28.818969]                       ^
[   28.819035]  ffff9ec8b38c6700: 00 f9 f9 f9 f9 f9 f9 f9 01 f9 f9 f9 f9 f9 f9 f9
[   28.819129]  ffff9ec8b38c6780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   28.819197] ==================================================================

[   23.618366] ==================================================================
[   23.618872] BUG: KASAN: global-out-of-bounds in kasan_global_oob_right+0x286/0x2d0
[   23.619354] Read of size 1 at addr ffffffffb32a9ecd by task kunit_try_catch/274
[   23.619613] 
[   23.619744] CPU: 1 UID: 0 PID: 274 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc3-next-20250625 #1 PREEMPT(voluntary) 
[   23.619790] Tainted: [B]=BAD_PAGE, [N]=TEST
[   23.619802] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   23.619823] Call Trace:
[   23.619914]  <TASK>
[   23.619932]  dump_stack_lvl+0x73/0xb0
[   23.619975]  print_report+0xd1/0x650
[   23.619996]  ? __virt_addr_valid+0x1db/0x2d0
[   23.620018]  ? kasan_global_oob_right+0x286/0x2d0
[   23.620038]  ? kasan_addr_to_slab+0x11/0xa0
[   23.620057]  ? kasan_global_oob_right+0x286/0x2d0
[   23.620077]  kasan_report+0x141/0x180
[   23.620097]  ? kasan_global_oob_right+0x286/0x2d0
[   23.620121]  __asan_report_load1_noabort+0x18/0x20
[   23.620143]  kasan_global_oob_right+0x286/0x2d0
[   23.620163]  ? __pfx_kasan_global_oob_right+0x10/0x10
[   23.620185]  ? __schedule+0x10cc/0x2b60
[   23.620208]  ? __pfx_read_tsc+0x10/0x10
[   23.620229]  ? ktime_get_ts64+0x86/0x230
[   23.620252]  kunit_try_run_case+0x1a5/0x480
[   23.620277]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.620300]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   23.620319]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   23.620348]  ? __kthread_parkme+0x82/0x180
[   23.620368]  ? preempt_count_sub+0x50/0x80
[   23.620390]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.620413]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.620435]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   23.620457]  kthread+0x337/0x6f0
[   23.620476]  ? trace_preempt_on+0x20/0xc0
[   23.620497]  ? __pfx_kthread+0x10/0x10
[   23.620516]  ? _raw_spin_unlock_irq+0x47/0x80
[   23.620538]  ? calculate_sigpending+0x7b/0xa0
[   23.620560]  ? __pfx_kthread+0x10/0x10
[   23.620580]  ret_from_fork+0x116/0x1d0
[   23.620598]  ? __pfx_kthread+0x10/0x10
[   23.620617]  ret_from_fork_asm+0x1a/0x30
[   23.620645]  </TASK>
[   23.620655] 
[   23.627410] The buggy address belongs to the variable:
[   23.627664]  global_array+0xd/0x40
[   23.627961] 
[   23.628080] The buggy address belongs to the physical page:
[   23.628613] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x264a9
[   23.629020] flags: 0x100000000002000(reserved|node=0|zone=1)
[   23.629214] raw: 0100000000002000 ffffea0000992a48 ffffea0000992a48 0000000000000000
[   23.629560] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   23.629869] page dumped because: kasan: bad access detected
[   23.630175] 
[   23.630240] Memory state around the buggy address:
[   23.630436]  ffffffffb32a9d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   23.630734]  ffffffffb32a9e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   23.631073] >ffffffffb32a9e80: 00 00 00 00 00 00 00 00 00 02 f9 f9 f9 f9 f9 f9
[   23.631380]                                               ^
[   23.631622]  ffffffffb32a9f00: 00 f9 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9
[   23.632102]  ffffffffb32a9f80: 02 f9 f9 f9 f9 f9 f9 f9 01 f9 f9 f9 f9 f9 f9 f9
[   23.632406] ==================================================================