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net: TestUDPReadSizeError failures #62618

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gopherbot opened this issue Sep 13, 2023 · 2 comments
Open

net: TestUDPReadSizeError failures #62618

gopherbot opened this issue Sep 13, 2023 · 2 comments
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NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
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Backlog

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@gopherbot
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gopherbot commented Sep 13, 2023 •
edited by bcmills 

#!watchflakes
post <- pkg == "net" && test == "TestUDPReadSizeError" && `panic: test timed out`

Issue created automatically to collect these failures.

Example (log):

panic: test timed out after 3m0s
running tests:
	TestUDPReadSizeError (2m54s)

runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
	/tmp/workdir/go/src/runtime/proc.go:398 +0xce fp=0xc000421b80 sp=0xc000421b60 pc=0x43a88e
runtime.netpollblock(0x0?, 0x405266?, 0x0?)
	/tmp/workdir/go/src/runtime/netpoll.go:573 +0xf7 fp=0xc000421bb8 sp=0xc000421b80 pc=0x434157
internal/poll.runtime_pollWait(0x847af6090, 0x72)
	/tmp/workdir/go/src/runtime/netpoll.go:345 +0x85 fp=0xc000421bd8 sp=0xc000421bb8 pc=0x465fe5
internal/poll.(*pollDesc).wait(0xc000537100?, 0xc0000a1878?, 0x0)
	/tmp/workdir/go/src/internal/poll/fd_poll_runtime.go:84 +0x27 fp=0xc000421c00 sp=0xc000421bd8 pc=0x4936c7
internal/poll.(*pollDesc).waitRead(...)
	/tmp/workdir/go/src/internal/poll/fd_poll_runtime.go:89
internal/poll.(*FD).ReadFromInet4(0xc000537100, {0xc0000a1878, 0x13, 0x13}, 0xc0001e7cd8?)
	/tmp/workdir/go/src/internal/poll/fd_unix.go:247 +0x22b fp=0xc000421c98 sp=0xc000421c00 pc=0x494f4b
net.(*netFD).readFromInet4(0xc000537100, {0xc0000a1878?, 0x4967cf?, 0xc000537180?}, 0xc0000a1860?)
	/tmp/workdir/go/src/net/fd_posix.go:66 +0x25 fp=0xc000421ce8 sp=0xc000421c98 pc=0x559b45
net.(*UDPConn).readFrom(0x30?, {0xc0000a1878?, 0xc0002c05d0?, 0x0?}, 0xc0002c05d0)
	/tmp/workdir/go/src/net/udpsock_posix.go:52 +0x1b2 fp=0xc000421dd8 sp=0xc000421ce8 pc=0x579c32
net.(*UDPConn).readFromUDP(0xc0006163a8, {0xc0000a1878?, 0x44f5a9?, 0x13?}, 0x638ae0?)
	/tmp/workdir/go/src/net/udpsock.go:149 +0x30 fp=0xc000421e30 sp=0xc000421dd8 pc=0x577c50
net.(*UDPConn).ReadFrom(0x683cd6?, {0xc0000a1878, 0x13, 0x13})
	/tmp/workdir/go/src/net/udpsock.go:158 +0x4a fp=0xc000421e70 sp=0xc000421e30 pc=0x577dea
net.TestUDPReadSizeError(0xc0002c2340)
	/tmp/workdir/go/src/net/udpsock_test.go:423 +0x33f fp=0xc000421f70 sp=0xc000421e70 pc=0x5fd53f
testing.tRunner(0xc0002c2340, 0x69b3b0)

— watchflakes
@gopherbot gopherbot added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Sep 13, 2023
@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "net" && test == "TestUDPReadSizeError"
2023-09-13 18:34 dragonfly-amd64-622 go@dc0d126e net.TestUDPReadSizeError (log) 
panic: test timed out after 3m0s
running tests:
	TestUDPReadSizeError (2m54s)

runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
	/tmp/workdir/go/src/runtime/proc.go:398 +0xce fp=0xc000421b80 sp=0xc000421b60 pc=0x43a88e
runtime.netpollblock(0x0?, 0x405266?, 0x0?)
	/tmp/workdir/go/src/runtime/netpoll.go:573 +0xf7 fp=0xc000421bb8 sp=0xc000421b80 pc=0x434157
internal/poll.runtime_pollWait(0x847af6090, 0x72)
	/tmp/workdir/go/src/runtime/netpoll.go:345 +0x85 fp=0xc000421bd8 sp=0xc000421bb8 pc=0x465fe5
internal/poll.(*pollDesc).wait(0xc000537100?, 0xc0000a1878?, 0x0)
	/tmp/workdir/go/src/internal/poll/fd_poll_runtime.go:84 +0x27 fp=0xc000421c00 sp=0xc000421bd8 pc=0x4936c7
internal/poll.(*pollDesc).waitRead(...)
	/tmp/workdir/go/src/internal/poll/fd_poll_runtime.go:89
internal/poll.(*FD).ReadFromInet4(0xc000537100, {0xc0000a1878, 0x13, 0x13}, 0xc0001e7cd8?)
	/tmp/workdir/go/src/internal/poll/fd_unix.go:247 +0x22b fp=0xc000421c98 sp=0xc000421c00 pc=0x494f4b
net.(*netFD).readFromInet4(0xc000537100, {0xc0000a1878?, 0x4967cf?, 0xc000537180?}, 0xc0000a1860?)
	/tmp/workdir/go/src/net/fd_posix.go:66 +0x25 fp=0xc000421ce8 sp=0xc000421c98 pc=0x559b45
net.(*UDPConn).readFrom(0x30?, {0xc0000a1878?, 0xc0002c05d0?, 0x0?}, 0xc0002c05d0)
	/tmp/workdir/go/src/net/udpsock_posix.go:52 +0x1b2 fp=0xc000421dd8 sp=0xc000421ce8 pc=0x579c32
net.(*UDPConn).readFromUDP(0xc0006163a8, {0xc0000a1878?, 0x44f5a9?, 0x13?}, 0x638ae0?)
	/tmp/workdir/go/src/net/udpsock.go:149 +0x30 fp=0xc000421e30 sp=0xc000421dd8 pc=0x577c50
net.(*UDPConn).ReadFrom(0x683cd6?, {0xc0000a1878, 0x13, 0x13})
	/tmp/workdir/go/src/net/udpsock.go:158 +0x4a fp=0xc000421e70 sp=0xc000421e30 pc=0x577dea
net.TestUDPReadSizeError(0xc0002c2340)
	/tmp/workdir/go/src/net/udpsock_test.go:423 +0x33f fp=0xc000421f70 sp=0xc000421e70 pc=0x5fd53f
testing.tRunner(0xc0002c2340, 0x69b3b0)

— watchflakes

@bcmills bcmills added this to the Backlog milestone Sep 13, 2023
@bcmills
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bcmills commented Sep 13, 2023 •
edited

Hmm. Is this a flaky test, or a flaky host network stack? Let's see if it repeats.

(CC @ianlancetaylor @neild)

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