AzCopy v10 "panic: send on closed channel" on 403 Response

[tommywilkinson]

Which version of the AzCopy was used?

10.25

Which platform are you using? (ex: Windows, Mac, Linux)

Windows

What command did you run?

"copy --log-level=INFO --recursive"
(redacted exact details, since it's not terribly relevant to the repro)

What problem was encountered?

User account had owner permissions on storage account but not Storage Blob Data Contributor. Full error message from running azcopy locally:

INFO: Authentication failed, it is either not correct, or expired, or does not have the correct permission PUT https://<storageaccount>.blob.core.windows.net/1js/pr/3045226/wdjs/wac/we-c/debug/suiteux-shell/js/suiteux.shell.npm_mecontrol.rtl.js
--------------------------------------------------------------------------------
RESPONSE 403: 403 This request is not authorized to perform this operation using this permission.
ERROR CODE: AuthorizationPermissionMismatch
--------------------------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?><Error><Code>AuthorizationPermissionMismatch</Code><Message>This request is not authorized to perform this operation using this permission.
RequestId:3cd177f3-c01e-0050-18a5-b6a35a000000
Time:2024-06-04T17:34:48.4836791Z</Message></Error>
--------------------------------------------------------------------------------

panic: send on closed channel

goroutine 140 [running]:
github.com/Azure/azure-storage-azcopy/v10/ste.(*jobMgr).SendXferDoneMsg(0xc037b4fe08?, {{0xc000ef3b00, 0x7a}, {0xc000ef3b80, 0x80}, 0x0, 0xfffffffa, 0x12385, 0x0})
        D:/a/1/s/ste/jobStatusManager.go:72 +0x4e
github.com/Azure/azure-storage-azcopy/v10/ste.(*jobPartMgr).SendXferDoneMsg(0x180a2c3?, {{0xc000ef3b00, 0x7a}, {0xc000ef3b80, 0x80}, 0x0, 0xfffffffa, 0x12385, 0x0})
        D:/a/1/s/ste/mgr-JobPartMgr.go:694 +0x6e
github.com/Azure/azure-storage-azcopy/v10/ste.(*jobPartTransferMgr).ReportTransferDone(0xc000f08230)
        D:/a/1/s/ste/mgr-JobPartTransferMgr.go:992 +0x16c
github.com/Azure/azure-storage-azcopy/v10/ste.(*jobMgr).transferProcessor.func1({0x1d7ba20, 0xc000f08230})
        D:/a/1/s/ste/mgr-JobMgr.go:1089 +0xe2
github.com/Azure/azure-storage-azcopy/v10/ste.(*jobMgr).transferProcessor(0xc00039a388, 0x6acaaa856acaaa85?)
        D:/a/1/s/ste/mgr-JobMgr.go:1105 +0xb2
created by github.com/Azure/azure-storage-azcopy/v10/ste.NewJobMgr in goroutine 1
        D:/a/1/s/ste/mgr-JobMgr.go:200 +0xbf1
panic: send on closed channel

Not a big issue, but seems like a relatively expected case to be causing a panic.

How can we reproduce the problem in the simplest way?

Run azcopy in some manner to get a 403 response.

Have you found a mitigation/solution?

Yes. It's just a noisy failure. It prevents ending statistics from being printed properly, but otherwise is not very impactful.

[seanmcc-msft]

@tommywilkinson thanks for reporting this, we have added this item to our backlog to be fixed in a future release.