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[19.03 backport] Handle blocked I/O of exec'd processes #296

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Sep 23, 2019
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[19.03 backport] Handle blocked I/O of exec'd processes #296

merged 2 commits into from
Sep 23, 2019

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thaJeztah
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@thaJeztah thaJeztah commented Jul 8, 2019 •
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backport of moby#39383 and moby#39677
fixes moby#39326

moby#39383 Handle blocked I/O of exec'd processes

This is the second part to containerd/containerd#3361 and will help process delete not block forever when the process exists but the I/O was inherited by a subprocess that lives on.

moby#39677 daemon/ProcessEvent: make sure to cancel the contexts:

Reported by govet linter:

daemon/monitor.go:57:9: lostcancel: the cancel function returned by context.WithTimeout should be called, not discarded, to avoid a context leak (govet)
			ctx, _ := context.WithTimeout(context.Background(), 2*time.Second)
			     ^
daemon/monitor.go:128:9: lostcancel: the cancel function returned by context.WithTimeout should be called, not discarded, to avoid a context leak (govet)
			ctx, _ := context.WithTimeout(context.Background(), 2*time.Second)
			     ^

Fixes: b5f2886 ("Handle blocked I/O of exec'd processes", PR moby#39383)

@thaJeztah thaJeztah added this to the 19.03.0 milestone Jul 8, 2019
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Looks like the RS1 machines have issues again

12:54:02 FAIL: check_test.go:107: DockerSuite.TearDownTest
12:54:02 
12:54:02 assertion failed: error is not nil: Error response from daemon: container 0e572cda3c5e3ddfc5fa1e6c2444dcdcc414228053757eef83b2d3370405dd81: driver "windowsfilter" failed to remove root filesystem: failed to detach VHD: invalid argument: rename D:\CI\CI-18daa443c6\daemon\windowsfilter\0e572cda3c5e3ddfc5fa1e6c2444dcdcc414228053757eef83b2d3370405dd81 D:\CI\CI-18daa443c6\daemon\windowsfilter\0e572cda3c5e3ddfc5fa1e6c2444dcdcc414228053757eef83b2d3370405dd81-removing: Access is denied.: failed to remove 0e572cda3c5e3ddfc5fa1e6c2444dcdcc414228053757eef83b2d3370405dd81
12:54:02 
12:54:02 ----------------------------------------------------------------------
12:54:02 PANIC: docker_cli_run_test.go:4152: DockerSuite.TestRunCredentialSpecFailures
12:54:02 
12:54:02 ... Panic: Fixture has panicked (see related PANIC)

@thaJeztah thaJeztah modified the milestones: 19.03.0, 19.03.1, 19.03.2 Jul 23, 2019
kolyshkin
kolyshkin approved these changes Aug 7, 2019
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LGTM

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In fact, it make sense to also pick up moby#39677 here

@thaJeztah thaJeztah modified the milestones: 19.03.2, 19.03.3 Aug 30, 2019
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@kolyshkin I added moby#39677

@thaJeztah thaJeztah force-pushed the 19.03_backport_exec_hang branch 2 times, most recently from 1ae7c67 to 51c3cac Compare September 12, 2019 08:14
crosbymichael and others added 2 commits September 20, 2019 19:10
@crosbymichael @thaJeztah
Handle blocked I/O of exec'd processes
34b31d0 
This is the second part to
containerd/containerd#3361 and will help process
delete not block forever when the process exists but the I/O was
inherited by a subprocess that lives on.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
(cherry picked from commit b5f2886)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
@kolyshkin @thaJeztah
daemon/ProcessEvent: make sure to cancel the contexts
e489130 
Reported by govet linter:

> daemon/monitor.go:57:9: lostcancel: the cancel function returned by context.WithTimeout should be called, not discarded, to avoid a context leak (govet)
> 			ctx, _ := context.WithTimeout(context.Background(), 2*time.Second)
> 			     ^
> daemon/monitor.go:128:9: lostcancel: the cancel function returned by context.WithTimeout should be called, not discarded, to avoid a context leak (govet)
> 			ctx, _ := context.WithTimeout(context.Background(), 2*time.Second)
> 			     ^

Fixes: b5f288 ("Handle blocked I/O of exec'd processes")
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit 53cbf17)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
andrewhsu
andrewhsu approved these changes Sep 23, 2019
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SGTM

@andrewhsu andrewhsu merged commit 9a9ff44 into docker-archive:19.03 Sep 23, 2019
@thaJeztah thaJeztah deleted the 19.03_backport_exec_hang branch September 23, 2019 17:05
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@andrewhsu andrewhsu andrewhsu approved these changes

@kolyshkin kolyshkin kolyshkin approved these changes

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