Hay
Date
June 24, 2025, 12:47 p.m.

Environment
qemu-arm64
qemu-x86_64

[   27.263348] ==================================================================
[   27.263524] BUG: KASAN: stack-out-of-bounds in kasan_stack_oob+0x238/0x270
[   27.263681] Read of size 1 at addr ffff800080a17c2a by task kunit_try_catch/251
[   27.263825] 
[   27.263921] CPU: 1 UID: 0 PID: 251 Comm: kunit_try_catch Tainted: G    B            N  6.15.4-rc2 #1 PREEMPT 
[   27.264436] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.264572] Hardware name: linux,dummy-virt (DT)
[   27.264671] Call trace:
[   27.264731]  show_stack+0x20/0x38 (C)
[   27.264870]  dump_stack_lvl+0x8c/0xd0
[   27.265729]  print_report+0x310/0x608
[   27.265910]  kasan_report+0xdc/0x128
[   27.266726]  __asan_report_load1_noabort+0x20/0x30
[   27.267220]  kasan_stack_oob+0x238/0x270
[   27.267344]  kunit_try_run_case+0x170/0x3f0
[   27.267485]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   27.267618]  kthread+0x328/0x630
[   27.268197]  ret_from_fork+0x10/0x20
[   27.268472] 
[   27.269369] The buggy address belongs to stack of task kunit_try_catch/251
[   27.269978]  and is located at offset 138 in frame:
[   27.270073]  kasan_stack_oob+0x0/0x270
[   27.270327] 
[   27.270420] This frame has 4 objects:
[   27.272749]  [48, 49) '__assertion'
[   27.273222]  [64, 72) 'array'
[   27.273312]  [96, 112) '__assertion'
[   27.274448]  [128, 138) 'stack_array'
[   27.274575] 
[   27.274675] The buggy address belongs to the virtual mapping at
[   27.274675]  [ffff800080a10000, ffff800080a19000) created by:
[   27.274675]  kernel_clone+0x150/0x7a8
[   27.276165] 
[   27.276224] The buggy address belongs to the physical page:
[   27.276314] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a69
[   27.276473] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   27.276956] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000
[   27.277703] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   27.277839] page dumped because: kasan: bad access detected
[   27.278566] 
[   27.278623] Memory state around the buggy address:
[   27.278779]  ffff800080a17b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   27.278905]  ffff800080a17b80: 00 00 00 00 f1 f1 f1 f1 f1 f1 01 f2 00 f2 f2 f2
[   27.279494] >ffff800080a17c00: 00 00 f2 f2 00 02 f3 f3 00 00 00 00 00 00 00 00
[   27.280302]                                   ^
[   27.280471]  ffff800080a17c80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 f2 f2
[   27.281062]  ffff800080a17d00: 00 00 f2 f2 00 00 f3 f3 00 00 00 00 00 00 00 00
[   27.281174] ==================================================================

[   13.816002] ==================================================================
[   13.816734] BUG: KASAN: stack-out-of-bounds in kasan_stack_oob+0x2b5/0x300
[   13.817377] Read of size 1 at addr ffff888103a87d02 by task kunit_try_catch/269
[   13.817783] 
[   13.818654] CPU: 1 UID: 0 PID: 269 Comm: kunit_try_catch Tainted: G    B            N  6.15.4-rc2 #1 PREEMPT(voluntary) 
[   13.818784] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.818804] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.818830] Call Trace:
[   13.818846]  <TASK>
[   13.818869]  dump_stack_lvl+0x73/0xb0
[   13.818909]  print_report+0xd1/0x650
[   13.818931]  ? __virt_addr_valid+0x1db/0x2d0
[   13.818953]  ? kasan_stack_oob+0x2b5/0x300
[   13.818972]  ? kasan_addr_to_slab+0x11/0xa0
[   13.818990]  ? kasan_stack_oob+0x2b5/0x300
[   13.819010]  kasan_report+0x141/0x180
[   13.819030]  ? kasan_stack_oob+0x2b5/0x300
[   13.819053]  __asan_report_load1_noabort+0x18/0x20
[   13.819072]  kasan_stack_oob+0x2b5/0x300
[   13.819092]  ? __pfx_kasan_stack_oob+0x10/0x10
[   13.819109]  ? finish_task_switch.isra.0+0x153/0x700
[   13.819132]  ? __switch_to+0x5d9/0xf60
[   13.819153]  ? dequeue_task_fair+0x156/0x4e0
[   13.819175]  ? __schedule+0x10cc/0x2b60
[   13.819197]  ? __pfx_read_tsc+0x10/0x10
[   13.819215]  ? ktime_get_ts64+0x86/0x230
[   13.819241]  kunit_try_run_case+0x1a5/0x480
[   13.819266]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.819287]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.819309]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.819331]  ? __kthread_parkme+0x82/0x180
[   13.819351]  ? preempt_count_sub+0x50/0x80
[   13.819373]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.819394]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.819415]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.819436]  kthread+0x337/0x6f0
[   13.819452]  ? trace_preempt_on+0x20/0xc0
[   13.819474]  ? __pfx_kthread+0x10/0x10
[   13.819491]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.819510]  ? calculate_sigpending+0x7b/0xa0
[   13.819530]  ? __pfx_kthread+0x10/0x10
[   13.819570]  ret_from_fork+0x41/0x80
[   13.819591]  ? __pfx_kthread+0x10/0x10
[   13.819607]  ret_from_fork_asm+0x1a/0x30
[   13.819653]  </TASK>
[   13.819666] 
[   13.831934] The buggy address belongs to stack of task kunit_try_catch/269
[   13.832449]  and is located at offset 138 in frame:
[   13.832901]  kasan_stack_oob+0x0/0x300
[   13.833373] 
[   13.833523] This frame has 4 objects:
[   13.834059]  [48, 49) '__assertion'
[   13.834116]  [64, 72) 'array'
[   13.834306]  [96, 112) '__assertion'
[   13.834560]  [128, 138) 'stack_array'
[   13.835166] 
[   13.835459] The buggy address belongs to the physical page:
[   13.836035] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a87
[   13.836312] flags: 0x200000000000000(node=0|zone=2)
[   13.836818] raw: 0200000000000000 ffffea00040ea1c8 ffffea00040ea1c8 0000000000000000
[   13.837253] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[   13.837854] page dumped because: kasan: bad access detected
[   13.838142] 
[   13.838241] Memory state around the buggy address:
[   13.838520]  ffff888103a87c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1
[   13.839190]  ffff888103a87c80: f1 f1 f1 f1 f1 01 f2 00 f2 f2 f2 00 00 f2 f2 00
[   13.839488] >ffff888103a87d00: 02 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1
[   13.840062]                    ^
[   13.840253]  ffff888103a87d80: f1 f1 f1 00 00 f2 f2 00 00 f2 f2 00 00 f3 f3 00
[   13.840541]  ffff888103a87e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   13.840772] ==================================================================