hello,
I can confirm the bug and add the detail that it also segfault if the
empty pattern is in a file:
quark:~# cat /dev/null > /tmp/patt ; fgrep -i -f /tmp/patt
Segmentation fault
shouldn't the severity be higher than 'normal' for a problem like this
which is logged in the kernel ring buffer and so is shown in the output
of dmesg every time a (bad) script invoke this bug?
quark:~# dmesg | tail -n 2
[59128.902200] fgrep[6320]: segfault at 0 ip 000000000040887d sp
00007fffc282d650 error 6 in fgrep[400000+12000]
[59141.910302] fgrep[6321]: segfault at 0 ip 000000000040887d sp
00007fff4697ee10 error 6 in fgrep[400000+12000]
[59154.288166] fgrep[6869]: segfault at 0 ip 000000000040887d sp
00007fffbd19f3d0 error 6 in fgrep[400000+12000]
[59172.273363] fgrep[6872]: segfault at 0 ip 000000000040887d sp
00007fffa1ca7fa0 error 6 in fgrep[400000+12000]
[59185.136186] fgrep[6882]: segfault at 0 ip 000000000040887d sp
00007fff72fc9170 error 6 in fgrep[400000+12000]
[59214.643752] fgrep[8283]: segfault at 0 ip 000000000040887d sp
00007fff4809a880 error 6 in fgrep[400000+12000]
[59516.308163] fgrep[10673]: segfault at 0 ip 000000000040887d sp
00007ffff26708e0 error 6 in fgrep[400000+12000]
[59521.371854] fgrep[10675]: segfault at 0 ip 000000000040887d sp
00007fff95bf0a90 error 6 in fgrep[400000+12000]
[59536.459643] fgrep[10768]: segfault at 0 ip 000000000040887d sp
00007fffccd728e0 error 6 in fgrep[400000+12000]
[59551.290645] fgrep[10848]: segfault at 0 ip 000000000040887d sp
00007fff788a08c0 error 6 in fgrep[400000+12000]
(I added this to have it indexed by search engines so it may help other
to understand why they have this strange logs in dmesg)
--
bye,
emilio
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