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[SR-8560] XMLDocument on Linux crashes with a Segmentation Fault #3645

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swift-ci opened this issue Aug 17, 2018 · 2 comments
Open

[SR-8560] XMLDocument on Linux crashes with a Segmentation Fault #3645

swift-ci opened this issue Aug 17, 2018 · 2 comments
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bug Foundation

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@swift-ci
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Previous ID SR-8560
Radar None
Original Reporter chriseidhof (JIRA User)
Type Bug
Status Reopened
Resolution
Additional Detail from JIRA
Votes 0
Component/s Foundation
Labels Bug
Assignee None
Priority Medium

md5: b8f34b45710fb5d926cd9a5b7f1aeb88

Issue Description:

Here's what I tried:

import Foundation

let str = """
<?xml version="1.0" encoding="UTF-8"?>
<plans></plans>
"""

let data = str.data(using: .utf8)!

func test() throws {
    guard let doc = try XMLDocument(data: data, options: []).rootElement() else { fatalError("Couldn't parse doc") }
    print(doc.name)
}

try test()

I ran it on Linux with the following Dockerfile:

FROM norionomura/swift:41
WORKDIR /app
COPY Package.swift ./
COPY Sources ./Sources
RUN swift build --product isolate-xml-problem --configuration debug
RUN .build/debug/isolate-xml-problem
CMD ["echo hello"]

This crashes with the following error message:

*** Error in `.build/debug/isolate-xml-problem': free(): invalid pointer: 0x0000560148211ff7 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x777e5)[0x7fdc2946c7e5]
/lib/x86_64-linux-gnu/libc.so.6(+0x8037a)[0x7fdc2947537a]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x4c)[0x7fdc2947953c]
/usr/lib/x86_64-linux-gnu/libxml2.so.2(xmlFreeNode+0x25b)[0x7fdc269772fb]
/usr/lib/swift/linux/libFoundation.so(_T010Foundation7XMLNodeCfd+0x331)[0x7fdc2ace8fd1]
/usr/lib/swift/linux/libFoundation.so(_T010Foundation10XMLElementCfD+0x9)[0x7fdc2ace11d9]
/usr/lib/swift/linux/libswiftCore.so(+0x39f88b)[0x7fdc2b54488b]
.build/debug/isolate-xml-problem(+0x1a1e)[0x5601468c6a1e]
.build/debug/isolate-xml-problem(+0x1737)[0x5601468c6737]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7fdc29415830]
.build/debug/isolate-xml-problem(+0x1259)[0x5601468c6259]

The `test` method body does execute successfully, by the way (it prints the node's name).

At the moment of writing, I can also replicate this with the nightly branch (change 41 to nightly in the Dockerfile).
@spevans
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spevans commented Aug 20, 2018

This is a potential fix: #1664 but there might be other underlying issues Ive missed.

@swift-ci
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swift-ci commented Mar 1, 2019

Comment by Alexandru Tudose (JIRA)

I still can reproduce this issue using latest swift version in docker (swift 4.2.2). Here is my Docker file:

FROM swift:latest
WORKDIR /app
COPY Package.swift ./
COPY Sources ./Sources
RUN swift build --product xml-problem --configuration debug
RUN .build/debug/xml-problem
CMD ["echo hello"]

and the output is

Linking ./.build/x86_64-unknown-linux/debug/xml-problem
Removing intermediate container 276ab95b9820
 ---> 7b4fbe9232f4
Step 6/7 : RUN .build/debug/xml-problem
 ---> Running in 49335d03230f
*** Error in `.build/debug/xml-problem': free(): invalid pointer: 0x00005597e343adb7 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x777e5)[0x7f9029b517e5]
/lib/x86_64-linux-gnu/libc.so.6(+0x8037a)[0x7f9029b5a37a]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x4c)[0x7f9029b5e53c]
/usr/lib/x86_64-linux-gnu/libxml2.so.2(xmlFreeNode+0x25b)[0x7f902726433b]
/usr/lib/swift/linux/libFoundation.so($S10Foundation7XMLNodeCfd+0x34b)[0x7f902b8ab14b]
/usr/lib/swift/linux/libFoundation.so($S10Foundation10XMLElementCfD+0x9)[0x7f902b8a4229]
/usr/lib/swift/linux/libswiftCore.so(+0x3c909b)[0x7f902b13209b]
.build/debug/xml-problem(+0x18c2)[0x5597e2c698c2]
.build/debug/xml-problem(+0x1411)[0x5597e2c69411]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7f9029afa830]
.build/debug/xml-problem(+0x11a9)[0x5597e2c691a9]
======= Memory map: ========

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 5, 2022
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@spevans @swift-ci