EL3RST
Linux / POSIXERRORCriticalDeviceHIGH confidence
Level 3 Reset
Production Risk
Rare; STREAMS-specific.
What this means
EL3RST (errno 47) is a Linux/STREAMS-specific error indicating that level 3 of a layered protocol has been reset.
Why it happens
- 1STREAMS device driver level 3 reset event
How to reproduce
STREAMS driver level 3 reset.
trigger — this will error
trigger — this will error
// errno = EL3RST after STREAMS level 3 reset
expected output
Level 3 reset (EL3RST)
Fix
Handle protocol reset and reinitialize
WHEN After receiving EL3RST
Handle protocol reset and reinitialize
// Treat as device reset — reinitialize
close(fd);
fd = open("/dev/streams_device", O_RDWR);Why this works
A level 3 reset requires full reinitialization of the STREAMS connection.
Sources
Official documentation ↗
Linux Programmer Manual errno(3)
Content generated with AI assistance and reviewed for accuracy. Found an error? hello@errcodes.dev