[Nut-upsuser] BUG: KFENCE: memory corruption infree_async+0x1d8/0x1e0

[gene heskett]

On 12/9/23 10:16, Dirk Schneider via Nut-upsuser wrote:
> Hi,
> 
> i run NUT on a Raspberry Pi 3 Model B and after the latest OS Update i 
> get the following Error from KFENCE, the current OS Version is the first 
> with KFENCE so it possible that this Problem has was always existing.
> 
> [21963.079554] 
> ==================================================================
> [21963.079580] BUG: KFENCE: memory corruption in free_async+0x1d8/0x1e0
> [21963.079580]
> [21963.079604] Corrupted memory at 0x0000000025448a9e [ ! ! ! . . . . . 
> . . . . . . . . ] (in kfence-#183):
> [21963.079711]  free_async+0x1d8/0x1e0
> [21963.079728]  usbdev_ioctl+0x138/0x1c40
> [21963.079744]  __arm64_sys_ioctl+0xd0/0x130
> [21963.079769]  invoke_syscall+0x7c/0x130
> [21963.079793]  el0_svc_common.constprop.0+0x6c/0x160
> [21963.079815]  do_el0_svc+0x38/0x120
> [21963.079835]  el0_svc+0x34/0xc0
> [21963.079856]  el0t_64_sync_handler+0x11c/0x150
> [21963.079876]  el0t_64_sync+0x198/0x19c
> [21963.079892]
> [21963.079899] kfence-#183: 0x0000000070088b17-0x00000000bed184b6, 
> size=5, cache=kmalloc-128
> [21963.079899]
> [21963.079916] allocated by task 1647 on cpu 2 at 21963.076359s:
> [21963.079946]  proc_do_submiturb+0xdb0/0x1000
> [21963.079962]  usbdev_ioctl+0x12c0/0x1c40
> [21963.079977]  __arm64_sys_ioctl+0xd0/0x130
> [21963.079999]  invoke_syscall+0x7c/0x130
> [21963.080019]  el0_svc_common.constprop.0+0x6c/0x160
> [21963.080040]  do_el0_svc+0x38/0x120
> [21963.080060]  el0_svc+0x34/0xc0
> [21963.080078]  el0t_64_sync_handler+0x11c/0x150
> [21963.080097]  el0t_64_sync+0x198/0x19c
> [21963.080111]
> [21963.080117] freed by task 1647 on cpu 2 at 21963.079503s:
> [21963.080155]  free_async+0x1d8/0x1e0
> [21963.080170]  usbdev_ioctl+0x138/0x1c40
> [21963.080184]  __arm64_sys_ioctl+0xd0/0x130
> [21963.080206]  invoke_syscall+0x7c/0x130
> [21963.080226]  el0_svc_common.constprop.0+0x6c/0x160
> [21963.080247]  do_el0_svc+0x38/0x120
> [21963.080267]  el0_svc+0x34/0xc0
> [21963.080285]  el0t_64_sync_handler+0x11c/0x150
> [21963.080304]  el0t_64_sync+0x198/0x19c
> [21963.080318]
> [21963.080327] CPU: 2 PID: 1647 Comm: usbhid-ups Tainted: G         C O 
>        6.1.63 #1
> [21963.080345] Hardware name: Raspberry Pi 3 Model B Rev 1.2 (DT)
> [21963.080354] 
> ==================================================================
> 
> The UPS is an Cyber Power Systems BR700ELCD with the following driver 
> configuration
> 
> driver = usbhid-ups
> port = /dev/ttyUSB0
> desc = "BR700ELCD"
> pollinterval=10
> pollfreq=15
> 
> Is that an Configuration ore Hardware issue?

That error I see above would prompt me to see if memtest86 would run on 
that system. It sure looks like a stuck bit someplace in the memory. 
Until proven otherwise, definitely a hardware problem in the memory.
> 
> Kind regards
> Dirk
> 
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Cheers, Gene Heskett.
-- 
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