From: Jakub Kicinski <kuba@kernel•org>
To: davem@davemloft•net
Cc: netdev@vger•kernel.org, edumazet@google•com, pabeni@redhat•com,
andrew+netdev@lunn•ch, horms@kernel•org, jdamato@fastly•com,
stfomichev@gmail•com, petrm@nvidia•com,
Jakub Kicinski <kuba@kernel•org>
Subject: [PATCH net-next v2 1/7] selftests: drv-net: add a warning for bkg + shell + terminate
Date: Wed, 19 Feb 2025 15:49:50 -0800 [thread overview]
Message-ID: <20250219234956.520599-2-kuba@kernel.org> (raw)
In-Reply-To: <20250219234956.520599-1-kuba@kernel.org>
Joe Damato reports that some shells will fork before running
the command when python does "sh -c $cmd", while bash does
an exec of $cmd directly. This will have implications for our
ability to terminate the child process on bash vs other shells.
Warn about using
bkg(... shell=True, termininate=True)
most background commands can hopefully exit cleanly (exit_wait).
Link: https://lore.kernel.org/Z7Yld21sv_Ip3gQx@LQ3V64L9R2
Signed-off-by: Jakub Kicinski <kuba@kernel•org>
---
v2: new
---
tools/testing/selftests/net/lib/py/utils.py | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/tools/testing/selftests/net/lib/py/utils.py b/tools/testing/selftests/net/lib/py/utils.py
index 9e3bcddcf3e8..33b153767d89 100644
--- a/tools/testing/selftests/net/lib/py/utils.py
+++ b/tools/testing/selftests/net/lib/py/utils.py
@@ -61,6 +61,10 @@ import time
self.terminate = not exit_wait
self.check_fail = fail
+ if shell and self.terminate:
+ print("# Warning: combining shell and terminate is risky!")
+ print("# SIGTERM may not reach the child on zsh/ksh!")
+
def __enter__(self):
return self
--
2.48.1
next prev parent reply other threads:[~2025-02-19 23:50 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-19 23:49 [PATCH net-next v2 0/7] selftests: drv-net: improve the queue test for XSK Jakub Kicinski
2025-02-19 23:49 ` Jakub Kicinski [this message]
2025-02-20 17:27 ` [PATCH net-next v2 1/7] selftests: drv-net: add a warning for bkg + shell + terminate Stanislav Fomichev
2025-02-20 17:48 ` Joe Damato
2025-02-20 19:31 ` Joe Damato
2025-02-20 21:10 ` Jakub Kicinski
2025-02-20 22:53 ` Joe Damato
2025-02-19 23:49 ` [PATCH net-next v2 2/7] selftests: drv-net: use cfg.rpath() in netlink xsk attr test Jakub Kicinski
2025-02-19 23:49 ` [PATCH net-next v2 3/7] selftests: drv-net: add missing new line in xdp_helper Jakub Kicinski
2025-02-20 7:26 ` Kurt Kanzenbach
2025-02-20 17:48 ` Joe Damato
2025-02-19 23:49 ` [PATCH net-next v2 4/7] selftests: drv-net: probe for AF_XDP sockets more explicitly Jakub Kicinski
2025-02-20 17:27 ` Stanislav Fomichev
2025-02-20 18:16 ` Joe Damato
2025-02-19 23:49 ` [PATCH net-next v2 5/7] selftests: drv-net: add a way to wait for a local process Jakub Kicinski
2025-02-20 17:29 ` Stanislav Fomichev
2025-02-20 19:28 ` Joe Damato
2025-02-19 23:49 ` [PATCH net-next v2 6/7] selftests: drv-net: improve the use of ksft helpers in XSK queue test Jakub Kicinski
2025-02-20 7:31 ` Kurt Kanzenbach
2025-02-19 23:49 ` [PATCH net-next v2 7/7] selftests: drv-net: rename queues check_xdp to check_xsk Jakub Kicinski
2025-02-20 19:35 ` [PATCH net-next v2 0/7] selftests: drv-net: improve the queue test for XSK Joe Damato
2025-02-21 2:17 ` patchwork-bot+netdevbpf
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