[FS#804] mt7621: kernel errors - rcu_sched detected stalls on CPUs/tasks

[LEDE Bugs]

The following task has a new comment added:

FS#804 - mt7621: kernel errors - rcu_sched detected stalls on CPUs/tasks
User who did this - camel (camel)

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well, i think, i can try without the pptp stuff , but the f2fs would be really helpful as there i have many things located (logs, rrd, etc ..)

Mon Jul 24 14:44:14 2017 kern.warn kernel: [ 1320.910000] f2fs: Unknown symbol posix_acl_chmod (err 0)

not sure, if you can try to add "F2FS" to built easily ?
using this packages:
#f2fs - for flash mem USB stick
opkg install kmod-fs-f2fs libf2fs f2fs-tools f2fsck mkf2fs

cu
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https://bugs.lede-project.org/index.php?do=details&task_id=804#comment3092