Hay
Date
July 1, 2025, 12:10 a.m.

Environment
qemu-arm64
qemu-x86_64

[   19.637022] ==================================================================
[   19.637141] BUG: KASAN: stack-out-of-bounds in kasan_stack_oob+0x238/0x270
[   19.637199] Read of size 1 at addr ffff800080a77c2a by task kunit_try_catch/249
[   19.637250] 
[   19.637281] CPU: 0 UID: 0 PID: 249 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT 
[   19.637364] Tainted: [B]=BAD_PAGE, [N]=TEST
[   19.637391] Hardware name: linux,dummy-virt (DT)
[   19.637433] Call trace:
[   19.637471]  show_stack+0x20/0x38 (C)
[   19.637520]  dump_stack_lvl+0x8c/0xd0
[   19.637581]  print_report+0x310/0x608
[   19.637638]  kasan_report+0xdc/0x128
[   19.637780]  __asan_report_load1_noabort+0x20/0x30
[   19.637861]  kasan_stack_oob+0x238/0x270
[   19.637908]  kunit_try_run_case+0x170/0x3f0
[   19.637962]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   19.638066]  kthread+0x328/0x630
[   19.638106]  ret_from_fork+0x10/0x20
[   19.638192] 
[   19.638597] The buggy address belongs to stack of task kunit_try_catch/249
[   19.638707]  and is located at offset 138 in frame:
[   19.638749]  kasan_stack_oob+0x0/0x270
[   19.638994] 
[   19.639035] This frame has 4 objects:
[   19.639124]  [48, 49) '__assertion'
[   19.639159]  [64, 72) 'array'
[   19.639189]  [96, 112) '__assertion'
[   19.639338]  [128, 138) 'stack_array'
[   19.639384] 
[   19.639440] The buggy address belongs to the virtual mapping at
[   19.639440]  [ffff800080a70000, ffff800080a79000) created by:
[   19.639440]  kernel_clone+0x150/0x7a8
[   19.639536] 
[   19.639558] The buggy address belongs to the physical page:
[   19.639648] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10799f
[   19.639874] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   19.639983] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000
[   19.640072] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   19.640164] page dumped because: kasan: bad access detected
[   19.640217] 
[   19.640485] Memory state around the buggy address:
[   19.640521]  ffff800080a77b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   19.640585]  ffff800080a77b80: 00 00 00 00 f1 f1 f1 f1 f1 f1 01 f2 00 f2 f2 f2
[   19.640644] >ffff800080a77c00: 00 00 f2 f2 00 02 f3 f3 00 00 00 00 00 00 00 00
[   19.640697]                                   ^
[   19.640732]  ffff800080a77c80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 f2 f2
[   19.640778]  ffff800080a77d00: 00 00 f2 f2 00 00 f3 f3 00 00 00 00 00 00 00 00
[   19.640836] ==================================================================

[   13.214001] ==================================================================
[   13.214664] BUG: KASAN: stack-out-of-bounds in kasan_stack_oob+0x2b5/0x300
[   13.214961] Read of size 1 at addr ffff8881039d7d02 by task kunit_try_catch/266
[   13.215301] 
[   13.215440] CPU: 1 UID: 0 PID: 266 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   13.215484] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.215496] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.215517] Call Trace:
[   13.215532]  <TASK>
[   13.215549]  dump_stack_lvl+0x73/0xb0
[   13.215579]  print_report+0xd1/0x650
[   13.215602]  ? __virt_addr_valid+0x1db/0x2d0
[   13.215626]  ? kasan_stack_oob+0x2b5/0x300
[   13.215645]  ? kasan_addr_to_slab+0x11/0xa0
[   13.215665]  ? kasan_stack_oob+0x2b5/0x300
[   13.215685]  kasan_report+0x141/0x180
[   13.215707]  ? kasan_stack_oob+0x2b5/0x300
[   13.215731]  __asan_report_load1_noabort+0x18/0x20
[   13.215755]  kasan_stack_oob+0x2b5/0x300
[   13.215775]  ? __pfx_kasan_stack_oob+0x10/0x10
[   13.215794]  ? finish_task_switch.isra.0+0x153/0x700
[   13.215816]  ? __switch_to+0x47/0xf50
[   13.215842]  ? __schedule+0x10cc/0x2b60
[   13.215872]  ? __pfx_read_tsc+0x10/0x10
[   13.215893]  ? ktime_get_ts64+0x86/0x230
[   13.215918]  kunit_try_run_case+0x1a5/0x480
[   13.215942]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.215964]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.215987]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.216009]  ? __kthread_parkme+0x82/0x180
[   13.216041]  ? preempt_count_sub+0x50/0x80
[   13.216072]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.216095]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.216118]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.216141]  kthread+0x337/0x6f0
[   13.216166]  ? trace_preempt_on+0x20/0xc0
[   13.216189]  ? __pfx_kthread+0x10/0x10
[   13.216209]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.216229]  ? calculate_sigpending+0x7b/0xa0
[   13.216253]  ? __pfx_kthread+0x10/0x10
[   13.216274]  ret_from_fork+0x116/0x1d0
[   13.216292]  ? __pfx_kthread+0x10/0x10
[   13.216313]  ret_from_fork_asm+0x1a/0x30
[   13.216344]  </TASK>
[   13.216355] 
[   13.223753] The buggy address belongs to stack of task kunit_try_catch/266
[   13.224047]  and is located at offset 138 in frame:
[   13.224423]  kasan_stack_oob+0x0/0x300
[   13.224756] 
[   13.224864] This frame has 4 objects:
[   13.225190]  [48, 49) '__assertion'
[   13.225219]  [64, 72) 'array'
[   13.225410]  [96, 112) '__assertion'
[   13.225589]  [128, 138) 'stack_array'
[   13.225790] 
[   13.226131] The buggy address belongs to the physical page:
[   13.226408] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039d7
[   13.226745] flags: 0x200000000000000(node=0|zone=2)
[   13.226994] raw: 0200000000000000 ffffea00040e75c8 ffffea00040e75c8 0000000000000000
[   13.227619] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[   13.227854] page dumped because: kasan: bad access detected
[   13.228094] 
[   13.228197] Memory state around the buggy address:
[   13.228426]  ffff8881039d7c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1
[   13.228782]  ffff8881039d7c80: f1 f1 f1 f1 f1 01 f2 00 f2 f2 f2 00 00 f2 f2 00
[   13.229054] >ffff8881039d7d00: 02 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1
[   13.230104]                    ^
[   13.230370]  ffff8881039d7d80: f1 f1 f1 00 00 f2 f2 00 00 f2 f2 00 00 f3 f3 00
[   13.230868]  ffff8881039d7e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.231430] ==================================================================