Date: Mon, 18 Feb 2008 20:56:01 +0000 From: Technical Department <technet@datadream.co.uk> To: freebsd-security@freebsd.org Subject: Re: How to take down a system to the point of requiring a newfs with one line of C (userland) Message-ID: <47B9F0E1.5030506@datadream.co.uk> In-Reply-To: <200802182052.m1IKqkFF004605@lava.sentex.ca> References: <47B90868.7000900@electron-tube.net> <200802182052.m1IKqkFF004605@lava.sentex.ca>
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I have tried on 6.3p1 Release and 6.2p10 Release - ran out of inodes - system fine. Mike Tancsa wrote: > At 11:24 PM 2/17/2008, Jim Bryant wrote: >> One line summary: >> Too many files in a top-level UFS-2 filesystem directory will cause >> a panic on mount. >> How to repeat the problem: >> Compile and run the following as instructed: >> >> umount that filesystem. > > Hi, > > I tried this on RELENG_7 and RELENG_6 and was not able to panic the box > > 0[releng7]# ls -l | wc > 20098 200972 1377211 > 0[releng7]# df -i > Filesystem 1K-blocks Used Avail Capacity iused ifree %iused > Mounted on > /dev/ad6s1a 1012974 284464 647474 31% 3308 138002 2% / > devfs 1 1 0 100% 0 0 100% /dev > /dev/ad6s1d 5077038 1221890 3448986 26% 20243 639211 3% /tmp > /dev/ad6s1e 25385516 15683412 7671264 67% 370099 2927179 11% /usr > /dev/ad6s1f 40139596 847342 36081088 2% 1001 5203989 0% /var > 0[releng7]# > > and releng_6 > 0[nanobsd]# ./a.out /tmp/k > 0[nanobsd]# ./a.out /tmp/kl > 0[nanobsd]# ls -l /tmp/ | wc > 20248 182229 1327842 > 0[nanobsd]# df -i > Filesystem 1K-blocks Used Avail Capacity iused ifree %iused > Mounted on > /dev/twed0s1a 1012974 109076 822862 12% 2099 139211 1% / > devfs 1 1 0 100% 0 0 100% > /dev > /dev/twed0s1d 4058062 3264732 468686 87% 23045 518649 4% > /tmp > /dev/twed0s1f 82042376 57488474 17990512 76% 2014718 8607232 19% > /usr > /dev/twed0s1e 20308398 5173252 13510476 28% 1813 2636009 0% > /var > 0[nanobsd]# > > After running the program and creating all the files, I just did a > reboot and all worked just fine post reboot. > > Did you fill up the partition or run out of inodes perhaps ? > > ---Mike > _______________________________________________ > freebsd-security@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-security > To unsubscribe, send any mail to "freebsd-security-unsubscribe@freebsd.org"help
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