Hay
Date
July 9, 2025, 12:11 a.m.

Environment
qemu-arm64
qemu-x86_64

[   21.860079] ==================================================================
[   21.860230] BUG: KASAN: alloca-out-of-bounds in kasan_alloca_oob_right+0x2dc/0x340
[   21.860304] Read of size 1 at addr ffff800080a87b4a by task kunit_try_catch/254
[   21.860504] 
[   21.860548] CPU: 1 UID: 0 PID: 254 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5 #1 PREEMPT 
[   21.860888] Tainted: [B]=BAD_PAGE, [N]=TEST
[   21.860967] Hardware name: linux,dummy-virt (DT)
[   21.861023] Call trace:
[   21.861069]  show_stack+0x20/0x38 (C)
[   21.861380]  dump_stack_lvl+0x8c/0xd0
[   21.861552]  print_report+0x310/0x608
[   21.861675]  kasan_report+0xdc/0x128
[   21.861779]  __asan_report_load1_noabort+0x20/0x30
[   21.861874]  kasan_alloca_oob_right+0x2dc/0x340
[   21.861997]  kunit_try_run_case+0x170/0x3f0
[   21.862051]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   21.862350]  kthread+0x328/0x630
[   21.862477]  ret_from_fork+0x10/0x20
[   21.862714] 
[   21.862777] The buggy address belongs to stack of task kunit_try_catch/254
[   21.862892] 
[   21.862941] The buggy address belongs to the virtual mapping at
[   21.862941]  [ffff800080a80000, ffff800080a89000) created by:
[   21.862941]  kernel_clone+0x150/0x7a8
[   21.863079] 
[   21.863105] The buggy address belongs to the physical page:
[   21.863159] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106ea1
[   21.863465] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   21.863652] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000
[   21.863769] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   21.863857] page dumped because: kasan: bad access detected
[   21.863918] 
[   21.864013] Memory state around the buggy address:
[   21.864119]  ffff800080a87a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   21.864214]  ffff800080a87a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   21.864262] >ffff800080a87b00: 00 00 00 00 ca ca ca ca 00 02 cb cb cb cb cb cb
[   21.864429]                                               ^
[   21.864555]  ffff800080a87b80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 01 f2 04 f2
[   21.864794]  ffff800080a87c00: 00 f2 f2 f2 00 00 f3 f3 00 00 00 00 00 00 00 00
[   21.864899] ==================================================================

[   14.559358] ==================================================================
[   14.560657] BUG: KASAN: alloca-out-of-bounds in kasan_alloca_oob_right+0x329/0x390
[   14.561499] Read of size 1 at addr ffff888102c27c4a by task kunit_try_catch/270
[   14.562055] 
[   14.562467] CPU: 1 UID: 0 PID: 270 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[   14.562520] Tainted: [B]=BAD_PAGE, [N]=TEST
[   14.562532] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   14.562555] Call Trace:
[   14.562568]  <TASK>
[   14.562586]  dump_stack_lvl+0x73/0xb0
[   14.562621]  print_report+0xd1/0x650
[   14.562644]  ? __virt_addr_valid+0x1db/0x2d0
[   14.562667]  ? kasan_alloca_oob_right+0x329/0x390
[   14.562690]  ? kasan_addr_to_slab+0x11/0xa0
[   14.562720]  ? kasan_alloca_oob_right+0x329/0x390
[   14.562743]  kasan_report+0x141/0x180
[   14.562765]  ? kasan_alloca_oob_right+0x329/0x390
[   14.562792]  __asan_report_load1_noabort+0x18/0x20
[   14.562817]  kasan_alloca_oob_right+0x329/0x390
[   14.562840]  ? __kasan_check_write+0x18/0x20
[   14.562859]  ? __pfx_sched_clock_cpu+0x10/0x10
[   14.562883]  ? finish_task_switch.isra.0+0x153/0x700
[   14.562907]  ? preempt_schedule_common+0xbe/0x110
[   14.562943]  ? trace_hardirqs_on+0x37/0xe0
[   14.563199]  ? __pfx_kasan_alloca_oob_right+0x10/0x10
[   14.563227]  ? __schedule+0x10cc/0x2b60
[   14.563250]  ? __pfx_read_tsc+0x10/0x10
[   14.563271]  ? ktime_get_ts64+0x86/0x230
[   14.563296]  kunit_try_run_case+0x1a5/0x480
[   14.563323]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.563346]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   14.563371]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   14.563395]  ? __kthread_parkme+0x82/0x180
[   14.563416]  ? preempt_count_sub+0x50/0x80
[   14.563439]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.563464]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.563489]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   14.563514]  kthread+0x337/0x6f0
[   14.563533]  ? trace_preempt_on+0x20/0xc0
[   14.563555]  ? __pfx_kthread+0x10/0x10
[   14.563576]  ? _raw_spin_unlock_irq+0x47/0x80
[   14.563598]  ? calculate_sigpending+0x7b/0xa0
[   14.563622]  ? __pfx_kthread+0x10/0x10
[   14.563643]  ret_from_fork+0x116/0x1d0
[   14.563661]  ? __pfx_kthread+0x10/0x10
[   14.563682]  ret_from_fork_asm+0x1a/0x30
[   14.563713]  </TASK>
[   14.563724] 
[   14.577794] The buggy address belongs to stack of task kunit_try_catch/270
[   14.578244] 
[   14.578336] The buggy address belongs to the physical page:
[   14.578630] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c27
[   14.579052] flags: 0x200000000000000(node=0|zone=2)
[   14.579526] raw: 0200000000000000 0000000000000000 ffffea00040b09c8 0000000000000000
[   14.579923] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[   14.580517] page dumped because: kasan: bad access detected
[   14.580851] 
[   14.580959] Memory state around the buggy address:
[   14.581220]  ffff888102c27b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   14.581966]  ffff888102c27b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   14.582340] >ffff888102c27c00: 00 00 00 00 ca ca ca ca 00 02 cb cb cb cb cb cb
[   14.582635]                                               ^
[   14.583044]  ffff888102c27c80: 00 00 00 f1 f1 f1 f1 01 f2 04 f2 00 f2 f2 f2 00
[   14.583330]  ffff888102c27d00: 00 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1
[   14.583833] ==================================================================