Date: Tue, 12 Sep 2000 10:10:40 -0700 (PDT) From: Bruce Evans <bde@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/gnu/ext2fs ext2_lookup.c Message-ID: <200009121710.KAA16936@freefall.freebsd.org>
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bde 2000/09/12 10:10:40 PDT
Modified files:
sys/gnu/ext2fs ext2_lookup.c
Log:
Fixed some serious bugs in ext2_readdir():
The cookie buffer was usually overrun by a large amount whenever
cookies were used. Cookies are used by nfs and the Linuxulator, so
this bug usually caused panics whenever an ext2fs filesystem was nfs
mounted or a Linux utility that calls readdir() was run on an ext2fs
filesystem.
The directory buffer was sometimes overrun by a small amount. This
sometimes caused panics and wrong results even for FreeBSD utilities,
but it was usually harmless because FreeBSD utilities use a large
enough buffer size (4K). Linux utilities usually triggered the bug
since they use a too-small buffer size (512 bytes), at least with the
old RedHat utilities that I tested with.
PR: 19407 (this fix is incomplete or for a slightly different bug)
Revision Changes Path
1.25 +24 -13 src/sys/gnu/ext2fs/ext2_lookup.c
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