Date: Thu, 06 Aug 2009 10:12:36 -0400 From: Michael Scheidell <scheidell@secnap.net> To: freebsd-jail@FreeBSD.org Subject: crontab hanging won't die on SIGTERM in jail Message-ID: <4A7AE4D4.2090600@secnap.net>
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anyone having problems during an in jail shutdown with crontab hanging?
I have seen this in 6.4 and 7.1, on i386 and amd64.
I don't remember problems with 6.3
using jailtools (jkill -r), OR
shutdown -r +0
OR
reboot
reboot: SIGTSTP init: No such process
truss shows:
truss -p 87553
(null)() = 0 (0x0)
gettimeofday({1249567500.835698},0x0) = 0 (0x0)
stat("tabs",{mode=drwx------ ,inode=10458278,size=512,blksize=4096}) = 0
(0x0)
stat("/etc/crontab",{mode=-rw-r--r--
,inode=10461256,size=748,blksize=4096}) = 0 (0x0)
gettimeofday({1249567500.836244},0x0) = 0 (0x0)
fork() = 88217 (0x15899)
gettimeofday({1249567500.836862},0x0) = 0 (0x0)
nanosleep({60.000000000}) ERR#4 'Interrupted
system call'
SIGNAL 20 (SIGCHLD)
SIGNAL 20 (SIGCHLD)
wait4(0xffffffff,0xbfbfe99c,0x1,0x0) = 88217 (0x15899)
wait4(0xffffffff,0xbfbfe99c,0x1,0x0) ERR#10 'No child processes'
sigreturn(0xbfbfe9d0) ERR#4 'Interrupted
system call'
gettimeofday({1249567500.842115},0x0) = 0 (0x0)
killall -SIGTERM cron
(caused NO truss activity)
it sees a HUP:
killall -SIGHUP cron
truss:
SIGNAL 1 (SIGHUP)
(null)() ERR#4 'Interrupted
system call'
gettimeofday({17.000000},0x0) = 0 (0x0)
(null)() = 0 (0x0)
SIGKILL will kill it.
--
Michael Scheidell, CTO
Phone: 561-999-5000, x 1259
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