Bug#311820: ioctl(fd, SIOCGMIIPHY,...) causes hard freeze before first ifconfig up
Package: kernel-image-2.6.11-1-686
Version: 2.6.11-5
Severity: normal
I was experimenting with ifupdown's mapping feature to autodetect the
network my laptop is connected currently before bringing the interface
up, and have found the following problem:
Invoking "mii-tool eth0" before the first "ifconfig eth0 up" run causes
the system to freeze (HW reset required). It also seems that if I skip
the "mii-tool eth0" on bootup, it freezes later when starting up exim4,
although I did not investigate that exim4 case.
Stracing mii-tool revealed that the system freezes during the ioctl
call:
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 3
ioctl(3, SIOCGMIIREG,
the call never returns.
However bringing the interface up before, makes mii-tool run OK. Also
bringing it up and down again makes mii-tool run OK. It looks like
something gets initialized in the kernel only on ifconfig up, and
running mii-tool before that makes the system go into some kind of
infinite loop.
I'm using Broadcom 4400 10/100BaseT NIC on HP/Compaq nx6110
I'll submit a dmesg and othe stuff as a followup once I get this laptop
online. (I'm submitting this bug from a different machine).
Marcin
-- System Information:
Debian Release: 3.1
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.11-1-k7
Locale: LANG=pl_PL, LC_CTYPE=pl_PL (charmap=ISO-8859-2)
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