Panic when cannot create a file descriptor

[Andrew15-5]

2. Issues with the Zellij UI / behavior / crash

Issue description

It's mostly the OS/user problem, but maybe this can be improved by zellij as it panics if there are no more file descriptiors + it creates a yet another server with --server every time I try to run zellij and it crashes. I'm using entr to update MuPDF when working with Typst. And I noticed that I have accumulated way too many entr processes. After I pkill them the issue is gone. But since I can open new windows for different apps, this means that zellij may be able to run as well, just without a server or something. I didn't look into the architecture, but if you can eliminate the panic by either creating a descriptive message of why I can't run zellij or just making it run as usual, that would be great.

Minimal reproduction

Run out of file descriptors?

Other relevant information

backtrace

 RUST_BACKTRACE=1 zellij


  × Thread 'signal_listener' panicked.
  ├─▶ At zellij-client/src/lib.rs:708:14
  ╰─▶ called `Result::unwrap()` on an `Err` value: Error { kind: Io(Os { code: 24, kind: Uncategorized, message: "No file descriptors available" }), paths: [] }
      
      Panic backtrace:
         0: <unknown>
         1: <unknown>
         2: <unknown>
         3: <unknown>
         4: <unknown>
         5: <unknown>
         6: <unknown>
         7: <unknown>
         8: <unknown>
         9: <unknown>
        10: <unknown>
        11: <unknown>
        12: <unknown>
      
  help: If you are seeing this message, it means that something went wrong.
        
        -> To get additional information, check the log at: /tmp/zellij-1000/zellij-log/zellij.log
        -> To see a backtrace next time, reproduce the error with: RUST_BACKTRACE=1 zellij [...]
        -> To help us fix this, please open an issue: https://github.com/zellij-org/zellij/issues

From the logs:

ERROR  |zellij_server::background| 2024-12-16 21:27:57.394 [async-std/runti] [zellij-server/src/background_jobs.rs:485]: Failed to read created stamp of resurrection file: Error { kind: Unsupported, message: "creation time is not available on this platform currently" }

big logs

INFO   |zellij_client            | 2024-12-16 21:28:31.255 [main      ] [zellij-client/src/lib.rs:182]: Starting Zellij client! 
INFO   |zellij_server            | 2024-12-16 21:28:31.272 [main      ] [zellij-server/src/lib.rs:522]: Starting Zellij server! 
WARN   |zellij_utils::kdl        | 2024-12-16 21:28:31.278 [main      ] [zellij-utils/src/kdl/mod.rs:695]: Converting new tab action without arguments, original action saved to .bak.kdl file 
WARN   |zellij_utils::kdl        | 2024-12-16 21:28:31.279 [main      ] [zellij-utils/src/kdl/mod.rs:695]: Converting new tab action without arguments, original action saved to .bak.kdl file 
ERROR  |zellij_utils::errors::not| 2024-12-16 21:28:31.281 [signal_listener] [zellij-utils/src/errors.rs:690]: Panic occured:
             thread: signal_listener
             location: At zellij-client/src/lib.rs:708:14
             message: called `Result::unwrap()` on an `Err` value: Error { kind: Io(Os { code: 24, kind: Uncategorized, message: "No file descriptors available" }), paths: [] } 
ERROR  |zellij_client::stdin_ansi| 2024-12-16 21:28:31.282 [stdin_handler] [zellij-client/src/stdin_ansi_parser.rs:124]: Failed to open STDIN cache file: Os { code: 2, kind: NotFound, message: "No such file or directory" } 
INFO   |zellij_server            | 2024-12-16 21:28:31.285 [main      ] [zellij-server/src/lib.rs:1493]: Compiling plugins using Cranelift 
INFO   |zellij_server::plugins   | 2024-12-16 21:28:31.286 [wasm      ] [zellij-server/src/plugins/mod.rs:232]: Wasm main thread starts 
WARN   |zellij_utils::ipc        | 2024-12-16 21:28:31.785 [server_router] [zellij-utils/src/ipc.rs:232]: Error in IpcReceiver.recv(): InvalidMarkerRead(Error { kind: UnexpectedEof, message: "failed to fill whole buffer" }) 

[ashayh]

I have a similar crash issue on Linux ashay 6.8.0-49-generic #49-Ubuntu SMP PREEMPT_DYNAMIC Mon Nov 4 02:06:24 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux .

zellij a # produces a crash.

The log shows:

INFO   |zellij_client            | 2024-12-18 20:50:51.956 [main      ] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-client-0.41.2/src/lib.rs:182]: Starting Zellij client!
INFO   |zellij_server            | 2024-12-18 20:50:51.964 [main      ] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-server-0.41.2/src/lib.rs:522]: Starting Zellij server!
WARN   |zellij_utils::kdl        | 2024-12-18 20:50:51.967 [main      ] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-utils-0.41.2/src/kdl/mod.rs:695]: Converting new tab action without arguments, original action saved to .bak.kdl file
WARN   |zellij_utils::kdl        | 2024-12-18 20:50:51.968 [main      ] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-utils-0.41.2/src/kdl/mod.rs:695]: Converting new tab action without arguments, original action saved to .bak.kdl file
ERROR  |zellij_utils::errors::not| 2024-12-18 20:50:51.968 [signal_listener] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-utils-0.41.2/src/errors.rs:690]: Panic occured:
             thread: signal_listener
             location: At /home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-client-0.41.2/src/lib.rs:708:14
             message: called `Result::unwrap()` on an `Err` value: Error { kind: Io(Os { code: 24, kind: Uncategorized, message: "Too many open files" }), paths: [] }
WARN   |zellij_server::route     | 2024-12-18 20:50:51.970 [server_router] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-server-0.41.2/src/route.rs:1111]: Server not ready, trying to place instruction in retry queue...
WARN   |zellij_server::route     | 2024-12-18 20:50:51.970 [server_router] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-server-0.41.2/src/route.rs:1229]: Server ready, retrying sending instruction.
INFO   |zellij_server            | 2024-12-18 20:50:51.970 [main      ] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-server-0.41.2/src/lib.rs:1493]: Compiling plugins using Cranelift
INFO   |zellij_server::plugins   | 2024-12-18 20:50:51.971 [wasm      ] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-server-0.41.2/src/plugins/mod.rs:232]: Wasm main thread starts
WARN   |zellij_utils::input::layo| 2024-12-18 20:50:51.972 [wasm      ] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-utils-0.41.2/src/input/layout.rs:109]: Overriding plugin alias
WARN   |zellij_utils::input::layo| 2024-12-18 20:50:51.972 [wasm      ] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-utils-0.41.2/src/input/layout.rs:109]: Overriding plugin alias
WARN   |zellij_utils::ipc        | 2024-12-18 20:50:51.975 [server_router] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-utils-0.41.2/src/ipc.rs:232]: Error in IpcReceiver.recv(): InvalidMarkerRead(Error { kind: UnexpectedEof, message: "failed to fill whole buffer" })
ERROR  |zellij_server::route     | 2024-12-18 20:50:51.976 [server_router] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-server-0.41.2/src/route.rs:1245]: Received empty message from client, logging client out.
INFO   |zellij_server::plugins::p| 2024-12-18 20:50:51.983 [async-std/runti] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-server-0.41.2/src/plugins/plugin_loader.rs:533]: Loaded plugin 'tab-bar' from cache folder at '/home/myhome/.cache/zellij' in 413.507µs
INFO   |zellij_server::plugins::p| 2024-12-18 20:50:51.984 [async-std/runti] [/home/myhome/.cargo/registry/src/index.crates.io-6f17d22bba15001f/zellij-server-0.41.2/src/plugins/plugin_loader.rs:533]: Loaded plugin 'status-bar' from cache folder at '/home/myhome/.cache/zellij' in 289.775µs

Killing some processes using too many file descriptors make zellij happy.