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Date: Tue, 19 Apr 2011 15:11:39 +0900 From: Kazuya Mio <k-mio@...jp.nec.com> To: ext4 <linux-ext4@...r.kernel.org>, Theodore Tso <tytso@....edu> Subject: [PATCH] tune2fs: Fix overflow of interval check Add the check of maximum check interval. s_checkinterval is 32bit variable, so it cannot be set more than 2^32. Signed-off-by: Kazuya Mio <k-mio@...jp.nec.com> --- misc/tune2fs.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/misc/tune2fs.c b/misc/tune2fs.c index bcada11..625866f 100644 --- a/misc/tune2fs.c +++ b/misc/tune2fs.c @@ -1705,6 +1705,12 @@ retry_open: printf(_("Setting reserved blocks gid to %lu\n"), resgid); } if (i_flag) { + if (interval >= (1ULL << 32)) { + com_err(program_name, 0, + _("interval between checks is too big (%lu)"), + interval); + exit(1); + } sb->s_checkinterval = interval; ext2fs_mark_super_dirty(fs); printf(_("Setting interval between checks to %lu seconds\n"), -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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