Date: Mon, 19 Dec 2016 14:54:11 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 214923] kqueue hangs with busy loop Message-ID: <bug-214923-8-LR0IJUjRhE@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-214923-8@https.bugs.freebsd.org/bugzilla/> References: <bug-214923-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D214923 --- Comment #18 from yjh0502@gmail.com --- (In reply to Konstantin Belousov from comment #17) Yes, I believe that both hangs/panic is caused by the same problem, as both symptom could be reproduced by same procedure. I made a simple script to reproduce the problem on both GENERIC/debug kerne= ls, 10.3 and 11.0. I reproduced and observed the problem by - running 'top' on console and start following script via ssh, or - running 'top' and following script on 'tmux' I can reproduce the problem almost instantly after running the script. If y= ou cannot reproduce the problem, try to re-run the script several times after cleaning up processes using 'pkill watchman xargs'. 'watchman' command can be installed with 'pkg'. https://gist.github.com/yjh0502/1355939dc89a055029d1161e5501a50a #!/usr/bin/env bash mkdir -p foo bar seq -w 0 100 | xargs -n1 -I{} touch foo/{}.c echo '["subscribe","./","mysub",{"fields":["name"],"expression":["allof",["type"= ,"f"],["not","empty"],["suffix","c"]]}]' | watchman -p -j --server-encoding=3Djson > /dev/null & while true; do find bar/ -type f | xargs -n1 -P5 -I'{}' mv '{}' foo; done & while true; do find foo/ -type f | xargs -n1 -P5 -I'{}' mv '{}' bar; done & wait --=20 You are receiving this mail because: You are the assignee for the bug.=
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