_NIOFileSystem crash in swift v6

patlux commented 2 weeks ago

I'm new to swift and trying to compile my small swift server to a static library for linux. It seems it only works with swift v6, so I'm trying to use swift v6 with vapor, but it crashes whenever using FileSystem.shared.info.

If you need more details, please ask and explain to me how I can provide it to you.

Thank you!

Expected behavior

No crash

Actual behavior

Build of product 'swift-nio-crash' complete! (1.03s)
[1]    47737 segmentation fault  swift run

Steps to reproduce

main.swift

import _NIOFileSystem

let fileSystem = FileSystem.shared
if let info = try await fileSystem.info(forFileAt: "/Users/hal9000/demise-of-dave.txt") {
    print("demise-of-dave.txt has type '\(info.type)'")
} else {
    print("demise-of-dave.txt doesn't exist")
}

print("Hello, world!")

Package.swift

import PackageDescription

let package = Package(
    name: "swift-nio-crash",
    platforms: [.macOS(.v13)],
    dependencies: [
        .package(url: "https://github.com/apple/swift-nio.git", from: "2.66.0"),
    ],
    targets: [
        .executableTarget(
            name: "swift-nio-crash",
            dependencies: [
                .product(name: "_NIOFileSystem", package: "swift-nio"),
            ]
        ),
    ]
)

If possible, minimal yet complete reproducer code (or URL to code)

See above

SwiftNIO version/commit hash

{
  "pins" : [
    {
      "identity" : "swift-atomics",
      "kind" : "remoteSourceControl",
      "location" : "https://github.com/apple/swift-atomics.git",
      "state" : {
        "revision" : "cd142fd2f64be2100422d658e7411e39489da985",
        "version" : "1.2.0"
      }
    },
    {
      "identity" : "swift-collections",
      "kind" : "remoteSourceControl",
      "location" : "https://github.com/apple/swift-collections.git",
      "state" : {
        "revision" : "ee97538f5b81ae89698fd95938896dec5217b148",
        "version" : "1.1.1"
      }
    },
    {
      "identity" : "swift-nio",
      "kind" : "remoteSourceControl",
      "location" : "https://github.com/apple/swift-nio.git",
      "state" : {
        "revision" : "9428f62793696d9a0cc1f26a63f63bb31da0516d",
        "version" : "2.66.0"
      }
    },
    {
      "identity" : "swift-system",
      "kind" : "remoteSourceControl",
      "location" : "https://github.com/apple/swift-system.git",
      "state" : {
        "revision" : "f9266c85189c2751589a50ea5aec72799797e471",
        "version" : "1.3.0"
      }
    }
  ],
  "version" : 2
}

System & version information

macOS 14.5 Swift v6 2024-06-13 and 2024-06-8

# Swift 5.10.1 works
~/d/P/s/swift-nio-crash ❯❯❯ /Library/Developer/Toolchains/swift-5.10.1-RELEASE.xctoolchain/usr/bin/swift run
Building for debugging...
[1/1] Write swift-version-20D57D0DBFF2EFBD.txt
Build complete! (0.14s)
demise-of-dave.txt doesn't exist
Hello, world!

# Swift 6 crashes
~/d/P/s/swift-nio-crash ❯❯❯ /Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2024-06-13-a.xctoolchain/usr/bin/swift run
warning: 'swift-system': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /Users/patwoz/dev/Personal/swift/swift-nio-crash/.build/checkouts/swift-system/Sources/System/CMakeLists.txt
Building for debugging...
<module-includes>:1:9: note: in file included from <module-includes>:1:
1 | #import "/Users/patwoz/dev/Personal/swift/swift-nio-crash/.build/checkouts/swift-nio/Sources/CNIOLinux/include/CNIOLinux.h"
  |         `- note: in file included from <module-includes>:1:
2 | 
<module-includes>:1:9: note: in file included from <module-includes>:1:
1 | #import "/Users/patwoz/dev/Personal/swift/swift-nio-crash/.build/checkouts/swift-nio/Sources/CNIOLinux/include/CNIOLinux.h"
  |         `- note: in file included from <module-includes>:1:
2 | 
<module-includes>:1:9: note: in file included from <module-includes>:1:
1 | #import "/Users/patwoz/dev/Personal/swift/swift-nio-crash/.build/checkouts/swift-nio/Sources/CNIOLinux/include/CNIOLinux.h"
  |         `- note: in file included from <module-includes>:1:
2 | 

[265/265] Applying swift-nio-crash
Build of product 'swift-nio-crash' complete! (22.13s)
[1]    48964 segmentation fault   run

Lukasa commented 2 weeks ago

Can you please attach a crash report or backtrace? You can find crash reports in Console.app.

patlux commented 2 weeks ago

swift package edit swift-nio

Go to ./Packages/swift-nio/Sources/NIOFileSystem/FileSys tem.swift

Edit the info function:

        public func info(
            forFileAt path: FilePath,
            infoAboutSymbolicLink: Bool
        ) async throws -> FileInfo? {
+            print("FileSystem::info() #1")
            return try await threadPool.runIfActive {
+                print("FileSystem::info() #2")
-                try self._info(forFileAt: path, infoAboutSymbolicLink: infoAboutSymbolicLink).get()
+                return try self._info(forFileAt: path, infoAboutSymbolicLink: infoAboutSymbolicLink).get()
            }
        }

No run again:

~/d/P/s/swift-nio-crash ❮❮❮ /Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2024-06-13-a.xctoolchain/usr/bin/swift run
warning: 'swift-system': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /Users/patwoz/dev/Personal/swift/swift-nio-crash/.build/checkouts/swift-system/Sources/System/CMakeLists.txt
Building for debugging...
/Users/patwoz/dev/Personal/swift/swift-nio-crash/Packages/swift-nio/Sources/NIOFileSystem/Internal/BufferedStream.swift:247:9: warning: @frozen has no effect on non-public enums
 245 | 
 246 |         /// A type that indicates the result of writing elements to the source.
 247 |         @frozen
     |         `- warning: @frozen has no effect on non-public enums
 248 |         internal enum WriteResult: Sendable {
 249 |             /// A token that is returned when the asynchronous stream's backpressure strategy indicated that production should
[16/16] Applying swift-nio-crash
Build of product 'swift-nio-crash' complete! (2.30s)
FileSystem::info() #1
[1]    51400 segmentation fault   run

The first "print" gets printed but not the second one. So it have must something todo with threadPool.runIfActive.

patlux commented 2 weeks ago

Can you please attach a crash report or backtrace? You can find crash reports in Console.app.

Wow that was fast. Ok will do that.

Lukasa commented 2 weeks ago

Heh, you got lucky and I was looking at my email when the email came in 😉

patlux commented 2 weeks ago

-------------------------------------
Translated Report (Full Report Below)
-------------------------------------

Process:               swift-nio-crash [51400]
Path:                  /Users/USER/*/swift-nio-crash
Identifier:            swift-nio-crash
Version:               ???
Code Type:             ARM-64 (Native)
Parent Process:        zsh [37911]
Responsible:           kitty [2455]
User ID:               501

Date/Time:             2024-06-17 09:43:57.6701 +0200
OS Version:            macOS 14.5 (23F79)
Report Version:        12
Anonymous UUID:        3E53371B-6AAE-F53F-6661-CE73AAD7C04F

Sleep/Wake UUID:       C7142CD1-3942-4752-811D-CA1C51CB3114

Time Awake Since Boot: 150000 seconds
Time Since Wake:       3756 seconds

System Integrity Protection: enabled

Crashed Thread:        13

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000004
Exception Codes:       0x0000000000000001, 0x0000000000000004

Termination Reason:    Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process:   exc handler [51400]

VM Region Info: 0x4 is not in any region.  Bytes before following region: 4335566844
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->  
      __TEXT                      1026b8000-102ae0000    [ 4256K] r-x/r-x SM=COW  /Users/USER/*/swift-nio-crash

Thread 0::  Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib                 0x1843f61f4 mach_msg2_trap + 8
1   libsystem_kernel.dylib                 0x184408b24 mach_msg2_internal + 80
2   libsystem_kernel.dylib                 0x1843fee34 mach_msg_overwrite + 476
3   libsystem_kernel.dylib                 0x1843f6578 mach_msg + 24
4   CoreFoundation                         0x184516680 __CFRunLoopServiceMachPort + 160
5   CoreFoundation                         0x184514f44 __CFRunLoopRun + 1208
6   CoreFoundation                         0x184514434 CFRunLoopRunSpecific + 608
7   CoreFoundation                         0x18459245c CFRunLoopRun + 64
8   libswift_Concurrency.dylib             0x24c5aa4e0 swift_task_asyncMainDrainQueueImpl() + 40
9   libswift_Concurrency.dylib             0x24c5aa4a0 swift_task_asyncMainDrainQueue + 92
10  swift-nio-crash                        0x102a79f64 main + 132
11  dyld                                   0x1840ae0e0 start + 2360

Thread 1:: SGLTN-TP-#0
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 2:: SGLTN-TP-#1
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 3:: SGLTN-TP-#2
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 4:: SGLTN-TP-#3
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 5:: SGLTN-TP-#4
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 6:: SGLTN-TP-#5
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 7:: SGLTN-TP-#6
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 8:: SGLTN-TP-#7
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 9:: SGLTN-TP-#8
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 10:: SGLTN-TP-#9
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 11:: SGLTN-TP-#10
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 12:: SGLTN-TP-#11
0   libsystem_kernel.dylib                 0x1843f6170 semaphore_wait_trap + 8
1   libdispatch.dylib                      0x184286984 _dispatch_sema4_wait + 28
2   libdispatch.dylib                      0x184287034 _dispatch_semaphore_wait_slow + 132
3   swift-nio-crash                        0x1028ef3d8 NIOThreadPool.process(identifier:) + 172 (NIOThreadPool.swift:213)
4   swift-nio-crash                        0x1028f06ec closure #3 in NIOThreadPool._start(threadNamePrefix:) + 232 (NIOThreadPool.swift:291)
5   swift-nio-crash                        0x10296de94 thunk for @escaping @callee_guaranteed (@guaranteed NIOThread) -> () + 24
6   swift-nio-crash                        0x102971808 closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 632 (ThreadPosix.swift:116)
7   swift-nio-crash                        0x1029718b0 @objc closure #1 in static ThreadOpsPosix.run(handle:args:detachThread:) + 12
8   libsystem_pthread.dylib                0x184436f94 _pthread_start + 136
9   libsystem_pthread.dylib                0x184431d34 thread_start + 8

Thread 13 Crashed:
0   swift-nio-crash                        0x10272e130 withCheckedThrowingContinuation<A>(isolation:function:_:) + 240
1   swift-nio-crash                        0x1028f16bd closure #1 in NIOThreadPool.runIfActive<A>(_:) + 1 (NIOThreadPool.swift:357)
2   swift-nio-crash                        0x1028f33cd partial apply for closure #1 in NIOThreadPool.runIfActive<A>(_:) + 1
3   libswift_Concurrency.dylib             0x24c5737f1 withTaskCancellationHandler<A>(operation:onCancel:) + 1
4   swift-nio-crash                        0x102840d55 withTaskCancellationHandler<A>(operation:onCancel:) + 1
5   swift-nio-crash                        0x1028f1341 NIOThreadPool.runIfActive<A>(_:) + 1 (NIOThreadPool.swift:356)
6   swift-nio-crash                        0x102a254e9 FileSystem.info(forFileAt:infoAboutSymbolicLink:) + 1 (FileSystem.swift:288)
7   swift-nio-crash                        0x102a2e459 protocol witness for FileSystemProtocol.info(forFileAt:infoAboutSymbolicLink:) in conformance FileSystem + 1
8   swift-nio-crash                        0x102a520bd FileSystemProtocol.info(forFileAt:) + 1 (FileSystemProtocol.swift:409)
9   swift-nio-crash                        0x102a7a051 async_MainTQ0_ + 1
10  swift-nio-crash                        0x102a7a519 thunk for @escaping @convention(thin) @async () -> () + 1
11  swift-nio-crash                        0x102a7a641 partial apply for thunk for @escaping @convention(thin) @async () -> () + 1
12  libswift_Concurrency.dylib             0x24c5ab0f9 completeTaskWithClosure(swift::AsyncContext*, swift::SwiftError*) + 1

Thread 13 crashed with ARM Thread State (64-bit):
    x0: 0x0000000000000001   x1: 0x0000000000000000   x2: 0x0000000000000000   x3: 0x74634166496e7572
    x4: 0xef293a5f28657669   x5: 0x00000001028f46fc   x6: 0x000000012f008730   x7: 0x00000001ec31b180
    x8: 0x0000000000000000   x9: 0x000000012f008790  x10: 0x00000001028f16bc  x11: 0x00006000013d0000
   x12: 0x00000001ec31b180  x13: 0x000000012f008730  x14: 0x0029000000000000  x15: 0x0000000000000030
   x16: 0x00000001943580a0  x17: 0x000000012f008690  x18: 0x0000000000000000  x19: 0x000000012e604e20
   x20: 0x0000000000000000  x21: 0x000000012f009040  x22: 0x000000012f008780  x23: 0x0000000000000000
   x24: 0x0000000000000001  x25: 0x000000025c8fed28  x26: 0x000000025c8fed38  x27: 0x0000000000000000
   x28: 0x000000016de5f0e0   fp: 0x000000016de5ee50   lr: 0x000000010272e0a8
    sp: 0x000000016de5ede0   pc: 0x000000010272e130 cpsr: 0x60001000
   far: 0x0000000000000004  esr: 0x92000006 (Data Abort) byte read Translation fault

Binary Images:
       0x1026b8000 -        0x102adffff swift-nio-crash (*) <5b5fd974-a9d6-3ab2-99b4-5a09997b6e78> /Users/USER/*/swift-nio-crash
       0x1843f5000 -        0x18442fffb libsystem_kernel.dylib (*) <9b8b53f9-e2b6-36df-98e9-28d8fca732f2> /usr/lib/system/libsystem_kernel.dylib
       0x184498000 -        0x184970fff com.apple.CoreFoundation (6.9) <84b539d5-22c9-3f8c-84c8-903e9c7b8d29> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
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       0x1840a8000 -        0x184130a17 dyld (*) <37bbc384-0755-31c7-a808-0ed49e44dd8e> /usr/lib/dyld
               0x0 - 0xffffffffffffffff ??? (*) <00000000-0000-0000-0000-000000000000> ???
       0x184282000 -        0x1842c9fff libdispatch.dylib (*) <502762ee-7aa7-306c-9dbd-88981a86bb78> /usr/lib/system/libdispatch.dylib
       0x184430000 -        0x18443cfff libsystem_pthread.dylib (*) <386b0fc1-7873-3328-8e71-43269fd1b2c7> /usr/lib/system/libsystem_pthread.dylib
       0x194100000 -        0x19465dfff libswiftCore.dylib (*) <c2fd0f69-d72c-37a5-938e-1bd710c88431> /usr/lib/swift/libswiftCore.dylib

External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 5
    thread_create: 1
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=665.0M resident=0K(0%) swapped_out_or_unallocated=665.0M(100%)
Writable regions: Total=554.7M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=554.7M(100%)

                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Activity Tracing                   256K        1 
Kernel Alloc Once                   32K        1 
MALLOC                           539.2M       15 
MALLOC guard page                   96K        6 
STACK GUARD                       56.2M       14 
Stack                             14.9M       14 
__AUTH                             343K       67 
__AUTH_CONST                      4087K      149 
__DATA                            1912K      145 
__DATA_CONST                      4289K      151 
__DATA_DIRTY                       365K       58 
__LINKEDIT                       537.9M        2 
__OBJC_RO                         71.9M        1 
__OBJC_RW                         2199K        1 
__TEXT                           127.1M      158 
dyld private memory                272K        2 
mapped file                         64K        1 
shared memory                       32K        2 
===========                     =======  ======= 
TOTAL                              1.3G      788 

-----------
Full Report
-----------

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  "procRole" : "Unspecified",
  "version" : 2,
  "userID" : 501,
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  "codeSigningMonitor" : 1,
  "incident" : "8DFB4BEC-2EBE-434F-9EAE-D7AD05832B5E",
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  "translated" : false,
  "cpuType" : "ARM-64",
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  "procLaunch" : "2024-06-17 09:43:54.7648 +0200",
  "procStartAbsTime" : 3838244519410,
  "procExitAbsTime" : 3838314240168,
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  "procPath" : "\/Users\/USER\/*\/swift-nio-crash",
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  "coalitionName" : "net.kovidgoyal.kitty",
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  "responsibleProc" : "kitty",
  "codeSigningID" : "swift-nio-crash-555549445b5fd974a9d63ab299b45a09997b6e78",
  "codeSigningTeamID" : "",
  "codeSigningFlags" : 570425861,
  "codeSigningValidationCategory" : 10,
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  "instructionByteStream" : {"beforePC":"yQIA+QkAAJApQQaRyQYA+f17R6m9+0OS\/wMCkQABH9aIHQDwCB1G+Q==","atPC":"CAVAueADCKoYQA2UqQNe+KiDXvihA1344h9A+eMbQPnkF0D55RNA+Q=="},
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Lukasa commented 2 weeks ago

This looks to be a crash in the Swift runtime. I'll see if I can reproduce it.

patlux commented 2 weeks ago

I uploaded the repo: https://github.com/patlux/swift-nio-crash

patlux commented 2 weeks ago

just tried the docker image and it seems to work

~/d/P/s/swift-nio-crash ❮❮❮ docker run --rm -v ${PWD}:/usr/src/app --workdir /usr/src/app swiftlang/swift:nightly-6.0-jammy swift run                                ✘ 130 main
warning: 'swift-system': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /usr/src/app/.build/checkouts/swift-system/Sources/System/CMakeLists.txt
Building for debugging...
[0/2] Write swift-version-24593BA9C3E375BF.txt
Build of product 'swift-nio-crash' complete! (0.19s)
FileSystem::info() #1
FileSystem::info() #2
demise-of-dave.txt doesn't exist
Hello, world!

So either my swift setup is broken or the macos version is broken.

Lukasa commented 2 weeks ago

Interesting, I hadn't caught up with the fact that you were using a nightly toolchain. The beta xcode works fine.

Lukasa commented 2 weeks ago

This is very likely to be a regression on the mainline nightly toolchain. I'm loading up this toolchain now, but I suspect you'll need to file a bug report on Swift.

patlux commented 2 weeks ago

Ah right, I forgot that, the Xcode beta works fine for building and running on macos.

But the problem with the xcode beta is, that I can't use it for compiling a static executable for linux, because:

    |        `- error: compiled module was created by a different version of the compiler ''; rebuild 'Foundation' and try again: /Users/patwoz/Library/org.swift.swiftpm/swift-sdks/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-06-08-a_static-linux-0.0.1.artifactbundle/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-06-08-a_static-linux-0.0.1/swift-linux-musl/musl-1.2.5.sdk/aarch64/usr/lib/swift_static/linux-static/aarch64/Foundation.swiftmodule

But at least I can now develop with the xcode beta and use the docker image for compiling the static executable for linux.

Lukasa commented 2 weeks ago

Ok, I think this is an issue with the nightly toolchain. Can you please file this as a bug report against Swift directly? Thanks so much! :sparkles:

patlux commented 2 weeks ago

I did. Thanks for the help!

apple / swift-nio