[FS#4118] logread crashes sometimes

[OpenWrt Bugs]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Bastian Bittorf (bittorf) 

Attached to Project - OpenWrt/LEDE Project
Summary - logread crashes sometimes
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - logread is dying several times a day here.
This is with r17950 and at least ath79 and mpc85xx and ramips.


Tue Nov  2 17:12:05 2021 kern.info kernel: [ 3745.330244] do_page_fault(): sending SIGSEGV to logread for invalid write access to 00000000
Tue Nov  2 17:12:05 2021 kern.info kernel: [ 3745.338789] epc = 77de87ac in libc.so[77d60000+a5000]
Tue Nov  2 17:12:05 2021 kern.info kernel: [ 3745.343833] ra  = 004017b3 in logread[400000+3000]


for checking if the log-service is healthy, we do regularly:


ubus call network.device status
ubus call log read
logread >/dev/null


The last call has (when failing) always RC = 139 with above message in log.


More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=4118

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