Hay
Date
June 18, 2025, 6:43 a.m.

Environment
qemu-arm64
qemu-x86_64

[   23.121008] ==================================================================
[   23.121228] BUG: KASAN: stack-out-of-bounds in kasan_stack_oob+0x238/0x270
[   23.121375] Read of size 1 at addr ffff8000809c7c2a by task kunit_try_catch/259
[   23.121491] 
[   23.121579] CPU: 0 UID: 0 PID: 259 Comm: kunit_try_catch Tainted: G    B   W        N  6.16.0-rc2-next-20250618 #1 PREEMPT 
[   23.121797] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST
[   23.122300] Hardware name: linux,dummy-virt (DT)
[   23.122481] Call trace:
[   23.122533]  show_stack+0x20/0x38 (C)
[   23.122666]  dump_stack_lvl+0x8c/0xd0
[   23.122807]  print_report+0x310/0x608
[   23.122924]  kasan_report+0xdc/0x128
[   23.123099]  __asan_report_load1_noabort+0x20/0x30
[   23.123227]  kasan_stack_oob+0x238/0x270
[   23.123344]  kunit_try_run_case+0x170/0x3f0
[   23.123459]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   23.123599]  kthread+0x328/0x630
[   23.123702]  ret_from_fork+0x10/0x20
[   23.123817] 
[   23.124046] The buggy address belongs to stack of task kunit_try_catch/259
[   23.124411]  and is located at offset 138 in frame:
[   23.124721]  kasan_stack_oob+0x0/0x270
[   23.125004] 
[   23.125328] This frame has 4 objects:
[   23.125657]  [48, 49) '__assertion'
[   23.125764]  [64, 72) 'array'
[   23.125839]  [96, 112) '__assertion'
[   23.125979]  [128, 138) 'stack_array'
[   23.126147] 
[   23.126229] The buggy address belongs to the virtual mapping at
[   23.126229]  [ffff8000809c0000, ffff8000809c9000) created by:
[   23.126229]  kernel_clone+0x150/0x7a8
[   23.126642] 
[   23.126713] The buggy address belongs to the physical page:
[   23.126799] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107781
[   23.126924] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   23.127122] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000
[   23.127242] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   23.127343] page dumped because: kasan: bad access detected
[   23.127422] 
[   23.127729] Memory state around the buggy address:
[   23.127895]  ffff8000809c7b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   23.128066]  ffff8000809c7b80: 00 00 00 00 f1 f1 f1 f1 f1 f1 01 f2 00 f2 f2 f2
[   23.128195] >ffff8000809c7c00: 00 00 f2 f2 00 02 f3 f3 00 00 00 00 00 00 00 00
[   23.128321]                                   ^
[   23.128414]  ffff8000809c7c80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 f2 f2
[   23.128593]  ffff8000809c7d00: 00 00 f2 f2 00 00 f3 f3 00 00 00 00 00 00 00 00
[   23.128712] ==================================================================

[   12.951930] ==================================================================
[   12.953304] BUG: KASAN: stack-out-of-bounds in kasan_stack_oob+0x2b5/0x300
[   12.954298] Read of size 1 at addr ffff8881029d7d02 by task kunit_try_catch/275
[   12.954597] 
[   12.954786] CPU: 0 UID: 0 PID: 275 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc2-next-20250618 #1 PREEMPT(voluntary) 
[   12.954844] Tainted: [B]=BAD_PAGE, [N]=TEST
[   12.954857] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   12.954878] Call Trace:
[   12.954891]  <TASK>
[   12.954908]  dump_stack_lvl+0x73/0xb0
[   12.954937]  print_report+0xd1/0x650
[   12.954959]  ? __virt_addr_valid+0x1db/0x2d0
[   12.954983]  ? kasan_stack_oob+0x2b5/0x300
[   12.955001]  ? kasan_addr_to_slab+0x11/0xa0
[   12.955021]  ? kasan_stack_oob+0x2b5/0x300
[   12.955040]  kasan_report+0x141/0x180
[   12.955061]  ? kasan_stack_oob+0x2b5/0x300
[   12.955084]  __asan_report_load1_noabort+0x18/0x20
[   12.955107]  kasan_stack_oob+0x2b5/0x300
[   12.955127]  ? __pfx_kasan_stack_oob+0x10/0x10
[   12.955145]  ? finish_task_switch.isra.0+0x153/0x700
[   12.955167]  ? __switch_to+0x47/0xf50
[   12.955193]  ? __schedule+0x10cc/0x2b60
[   12.955224]  ? __pfx_read_tsc+0x10/0x10
[   12.955245]  ? ktime_get_ts64+0x86/0x230
[   12.955270]  kunit_try_run_case+0x1a5/0x480
[   12.955295]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.955315]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   12.955337]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   12.955358]  ? __kthread_parkme+0x82/0x180
[   12.955378]  ? preempt_count_sub+0x50/0x80
[   12.955400]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.955422]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.955444]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   12.955466]  kthread+0x337/0x6f0
[   12.955485]  ? trace_preempt_on+0x20/0xc0
[   12.955507]  ? __pfx_kthread+0x10/0x10
[   12.955527]  ? _raw_spin_unlock_irq+0x47/0x80
[   12.955546]  ? calculate_sigpending+0x7b/0xa0
[   12.955569]  ? __pfx_kthread+0x10/0x10
[   12.955589]  ret_from_fork+0x116/0x1d0
[   12.955607]  ? __pfx_kthread+0x10/0x10
[   12.955626]  ret_from_fork_asm+0x1a/0x30
[   12.955655]  </TASK>
[   12.955665] 
[   12.968744] The buggy address belongs to stack of task kunit_try_catch/275
[   12.969253]  and is located at offset 138 in frame:
[   12.969416]  kasan_stack_oob+0x0/0x300
[   12.969852] 
[   12.970062] This frame has 4 objects:
[   12.970525]  [48, 49) '__assertion'
[   12.970548]  [64, 72) 'array'
[   12.970930]  [96, 112) '__assertion'
[   12.971280]  [128, 138) 'stack_array'
[   12.971626] 
[   12.972177] The buggy address belongs to the physical page:
[   12.972762] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029d7
[   12.973012] flags: 0x200000000000000(node=0|zone=2)
[   12.973181] raw: 0200000000000000 ffffea00040a75c8 ffffea00040a75c8 0000000000000000
[   12.973508] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[   12.973796] page dumped because: kasan: bad access detected
[   12.974004] 
[   12.974085] Memory state around the buggy address:
[   12.974456]  ffff8881029d7c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1
[   12.974807]  ffff8881029d7c80: f1 f1 f1 f1 f1 01 f2 00 f2 f2 f2 00 00 f2 f2 00
[   12.975106] >ffff8881029d7d00: 02 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1
[   12.975442]                    ^
[   12.975564]  ffff8881029d7d80: f1 f1 f1 00 00 f2 f2 00 00 f2 f2 00 00 f3 f3 00
[   12.976022]  ffff8881029d7e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   12.976376] ==================================================================