Hay
Date
July 3, 2025, 11:10 p.m.

Environment
qemu-arm64
qemu-x86_64

[   22.441600] ==================================================================
[   22.441990] BUG: KASAN: stack-out-of-bounds in kasan_stack_oob+0x238/0x270
[   22.442144] Read of size 1 at addr ffff800080977c2a by task kunit_try_catch/249
[   22.442250] 
[   22.443054] CPU: 0 UID: 0 PID: 249 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT 
[   22.443350] Tainted: [B]=BAD_PAGE, [N]=TEST
[   22.443406] Hardware name: linux,dummy-virt (DT)
[   22.443478] Call trace:
[   22.443559]  show_stack+0x20/0x38 (C)
[   22.443779]  dump_stack_lvl+0x8c/0xd0
[   22.443892]  print_report+0x310/0x608
[   22.444017]  kasan_report+0xdc/0x128
[   22.444145]  __asan_report_load1_noabort+0x20/0x30
[   22.444446]  kasan_stack_oob+0x238/0x270
[   22.444588]  kunit_try_run_case+0x170/0x3f0
[   22.444750]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   22.444882]  kthread+0x328/0x630
[   22.444987]  ret_from_fork+0x10/0x20
[   22.447570] 
[   22.448000] The buggy address belongs to stack of task kunit_try_catch/249
[   22.449557]  and is located at offset 138 in frame:
[   22.449851]  kasan_stack_oob+0x0/0x270
[   22.450274] 
[   22.450376] This frame has 4 objects:
[   22.450580]  [48, 49) '__assertion'
[   22.450832]  [64, 72) 'array'
[   22.450926]  [96, 112) '__assertion'
[   22.451046]  [128, 138) 'stack_array'
[   22.451152] 
[   22.451253] The buggy address belongs to the virtual mapping at
[   22.451253]  [ffff800080970000, ffff800080979000) created by:
[   22.451253]  kernel_clone+0x150/0x7a8
[   22.451457] 
[   22.451553] The buggy address belongs to the physical page:
[   22.451652] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077c7
[   22.451787] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   22.451930] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000
[   22.452110] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   22.452237] page dumped because: kasan: bad access detected
[   22.452319] 
[   22.452367] Memory state around the buggy address:
[   22.452468]  ffff800080977b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   22.452598]  ffff800080977b80: 00 00 00 00 f1 f1 f1 f1 f1 f1 01 f2 00 f2 f2 f2
[   22.452743] >ffff800080977c00: 00 00 f2 f2 00 02 f3 f3 00 00 00 00 00 00 00 00
[   22.452867]                                   ^
[   22.452947]  ffff800080977c80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 f2 f2
[   22.453074]  ffff800080977d00: 00 00 f2 f2 00 00 f3 f3 00 00 00 00 00 00 00 00
[   22.453182] ==================================================================

[   13.373576] ==================================================================
[   13.374825] BUG: KASAN: stack-out-of-bounds in kasan_stack_oob+0x2b5/0x300
[   13.375064] Read of size 1 at addr ffff888103a3fd02 by task kunit_try_catch/266
[   13.376096] 
[   13.376469] CPU: 1 UID: 0 PID: 266 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   13.376520] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.376533] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.376555] Call Trace:
[   13.376567]  <TASK>
[   13.376586]  dump_stack_lvl+0x73/0xb0
[   13.376613]  print_report+0xd1/0x650
[   13.376636]  ? __virt_addr_valid+0x1db/0x2d0
[   13.376659]  ? kasan_stack_oob+0x2b5/0x300
[   13.376678]  ? kasan_addr_to_slab+0x11/0xa0
[   13.376698]  ? kasan_stack_oob+0x2b5/0x300
[   13.376718]  kasan_report+0x141/0x180
[   13.376740]  ? kasan_stack_oob+0x2b5/0x300
[   13.376764]  __asan_report_load1_noabort+0x18/0x20
[   13.376788]  kasan_stack_oob+0x2b5/0x300
[   13.376806]  ? __pfx_kasan_stack_oob+0x10/0x10
[   13.376826]  ? finish_task_switch.isra.0+0x153/0x700
[   13.376846]  ? __switch_to+0x47/0xf50
[   13.376872]  ? __schedule+0x10cc/0x2b60
[   13.376894]  ? __pfx_read_tsc+0x10/0x10
[   13.376914]  ? ktime_get_ts64+0x86/0x230
[   13.376937]  kunit_try_run_case+0x1a5/0x480
[   13.376959]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.376980]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.377002]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.377024]  ? __kthread_parkme+0x82/0x180
[   13.377043]  ? preempt_count_sub+0x50/0x80
[   13.377065]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.377088]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.377108]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.377258]  kthread+0x337/0x6f0
[   13.377286]  ? trace_preempt_on+0x20/0xc0
[   13.377311]  ? __pfx_kthread+0x10/0x10
[   13.377344]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.377366]  ? calculate_sigpending+0x7b/0xa0
[   13.377421]  ? __pfx_kthread+0x10/0x10
[   13.377442]  ret_from_fork+0x116/0x1d0
[   13.377461]  ? __pfx_kthread+0x10/0x10
[   13.377481]  ret_from_fork_asm+0x1a/0x30
[   13.377511]  </TASK>
[   13.377522] 
[   13.394102] The buggy address belongs to stack of task kunit_try_catch/266
[   13.395105]  and is located at offset 138 in frame:
[   13.395840]  kasan_stack_oob+0x0/0x300
[   13.396549] 
[   13.396646] This frame has 4 objects:
[   13.396860]  [48, 49) '__assertion'
[   13.396883]  [64, 72) 'array'
[   13.397012]  [96, 112) '__assertion'
[   13.397449]  [128, 138) 'stack_array'
[   13.397943] 
[   13.398860] The buggy address belongs to the physical page:
[   13.399542] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a3f
[   13.400008] flags: 0x200000000000000(node=0|zone=2)
[   13.400428] raw: 0200000000000000 ffffea00040e8fc8 ffffea00040e8fc8 0000000000000000
[   13.400756] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[   13.401042] page dumped because: kasan: bad access detected
[   13.401607] 
[   13.402105] Memory state around the buggy address:
[   13.402661]  ffff888103a3fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1
[   13.403090]  ffff888103a3fc80: f1 f1 f1 f1 f1 01 f2 00 f2 f2 f2 00 00 f2 f2 00
[   13.403677] >ffff888103a3fd00: 02 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1
[   13.403964]                    ^
[   13.404115]  ffff888103a3fd80: f1 f1 f1 00 00 f2 f2 00 00 f2 f2 00 00 f3 f3 00
[   13.404426]  ffff888103a3fe00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.404721] ==================================================================