Hay
Date
July 23, 2025, 3:10 a.m.

Environment
qemu-arm64
qemu-x86_64

[   32.742283] ==================================================================
[   32.742379] BUG: KASAN: stack-out-of-bounds in kasan_stack_oob+0x238/0x270
[   32.742448] Read of size 1 at addr ffff800080b77c2a by task kunit_try_catch/282
[   32.742500] 
[   32.742541] CPU: 1 UID: 0 PID: 282 Comm: kunit_try_catch Tainted: G    B   W        N  6.16.0-rc7-next-20250723 #1 PREEMPT 
[   32.742640] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST
[   32.742716] Hardware name: linux,dummy-virt (DT)
[   32.742755] Call trace:
[   32.742782]  show_stack+0x20/0x38 (C)
[   32.742838]  dump_stack_lvl+0x8c/0xd0
[   32.742887]  print_report+0x310/0x5e8
[   32.743731]  kasan_report+0xdc/0x128
[   32.743810]  __asan_report_load1_noabort+0x20/0x30
[   32.743885]  kasan_stack_oob+0x238/0x270
[   32.744004]  kunit_try_run_case+0x170/0x3f0
[   32.744093]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   32.744148]  kthread+0x328/0x630
[   32.744201]  ret_from_fork+0x10/0x20
[   32.744475] 
[   32.744779] The buggy address belongs to stack of task kunit_try_catch/282
[   32.745232]  and is located at offset 138 in frame:
[   32.745285]  kasan_stack_oob+0x0/0x270
[   32.745802] 
[   32.745887] This frame has 4 objects:
[   32.746526]  [48, 49) '__assertion'
[   32.746720]  [64, 72) 'array'
[   32.746807]  [96, 112) '__assertion'
[   32.746972]  [128, 138) 'stack_array'
[   32.747039] 
[   32.747263] The buggy address belongs to a 8-page vmalloc region starting at 0xffff800080b70000 allocated at kernel_clone+0x150/0x7b0
[   32.747784] The buggy address belongs to the physical page:
[   32.747869] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109c18
[   32.748007] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   32.748113] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000
[   32.748324] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   32.748397] page dumped because: kasan: bad access detected
[   32.748621] 
[   32.748746] Memory state around the buggy address:
[   32.748921]  ffff800080b77b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   32.748996]  ffff800080b77b80: 00 00 00 00 f1 f1 f1 f1 f1 f1 01 f2 00 f2 f2 f2
[   32.749078] >ffff800080b77c00: 00 00 f2 f2 00 02 f3 f3 00 00 00 00 00 00 00 00
[   32.749209]                                   ^
[   32.749267]  ffff800080b77c80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 f2 f2
[   32.749505]  ffff800080b77d00: 00 00 f2 f2 00 00 f3 f3 00 00 00 00 00 00 00 00
[   32.749667] ==================================================================

[   27.082253] ==================================================================
[   27.083597] BUG: KASAN: stack-out-of-bounds in kasan_stack_oob+0x2b5/0x300
[   27.083843] Read of size 1 at addr ffff888106227d02 by task kunit_try_catch/298
[   27.084065] 
[   27.084176] CPU: 0 UID: 0 PID: 298 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7-next-20250723 #1 PREEMPT(voluntary) 
[   27.084233] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.084246] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   27.084270] Call Trace:
[   27.084284]  <TASK>
[   27.084304]  dump_stack_lvl+0x73/0xb0
[   27.084335]  print_report+0xd1/0x640
[   27.084360]  ? __virt_addr_valid+0x1db/0x2d0
[   27.084385]  ? kasan_stack_oob+0x2b5/0x300
[   27.084405]  ? kasan_addr_to_slab+0x11/0xa0
[   27.084427]  ? kasan_stack_oob+0x2b5/0x300
[   27.084447]  kasan_report+0x141/0x180
[   27.084470]  ? kasan_stack_oob+0x2b5/0x300
[   27.084827]  __asan_report_load1_noabort+0x18/0x20
[   27.084870]  kasan_stack_oob+0x2b5/0x300
[   27.084910]  ? __pfx_kasan_stack_oob+0x10/0x10
[   27.084931]  ? finish_task_switch.isra.0+0x153/0x700
[   27.085062]  ? __switch_to+0x47/0xf80
[   27.085095]  ? __schedule+0x10da/0x2b60
[   27.085121]  ? __pfx_read_tsc+0x10/0x10
[   27.085153]  ? ktime_get_ts64+0x86/0x230
[   27.085180]  kunit_try_run_case+0x1a5/0x480
[   27.085207]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.085231]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   27.085256]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   27.085283]  ? __kthread_parkme+0x82/0x180
[   27.085304]  ? preempt_count_sub+0x50/0x80
[   27.085328]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.085352]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.085376]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   27.085402]  kthread+0x337/0x6f0
[   27.085423]  ? trace_preempt_on+0x20/0xc0
[   27.085448]  ? __pfx_kthread+0x10/0x10
[   27.085468]  ? _raw_spin_unlock_irq+0x47/0x80
[   27.085492]  ? calculate_sigpending+0x7b/0xa0
[   27.085517]  ? __pfx_kthread+0x10/0x10
[   27.085539]  ret_from_fork+0x116/0x1d0
[   27.085559]  ? __pfx_kthread+0x10/0x10
[   27.085580]  ret_from_fork_asm+0x1a/0x30
[   27.085612]  </TASK>
[   27.085624] 
[   27.102277] The buggy address belongs to stack of task kunit_try_catch/298
[   27.103106]  and is located at offset 138 in frame:
[   27.103730]  kasan_stack_oob+0x0/0x300
[   27.104190] 
[   27.104281] This frame has 4 objects:
[   27.104555]  [48, 49) '__assertion'
[   27.104583]  [64, 72) 'array'
[   27.104939]  [96, 112) '__assertion'
[   27.105302]  [128, 138) 'stack_array'
[   27.105913] 
[   27.106499] The buggy address belongs to the physical page:
[   27.106964] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106227
[   27.107346] flags: 0x200000000000000(node=0|zone=2)
[   27.107550] raw: 0200000000000000 ffffea00041889c8 ffffea00041889c8 0000000000000000
[   27.108331] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[   27.109198] page dumped because: kasan: bad access detected
[   27.109549] 
[   27.109622] Memory state around the buggy address:
[   27.109776]  ffff888106227c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1
[   27.110101]  ffff888106227c80: f1 f1 f1 f1 f1 01 f2 00 f2 f2 f2 00 00 f2 f2 00
[   27.110948] >ffff888106227d00: 02 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1
[   27.111673]                    ^
[   27.112030]  ffff888106227d80: f1 f1 f1 00 00 f2 f2 00 00 f2 f2 00 00 f3 f3 00
[   27.112773]  ffff888106227e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   27.113238] ==================================================================