On Sun, 8 Jul 2007 14:30:17 -0700 (PDT) [EMAIL PROTECTED] wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=8724 > > Summary: Unaligned acess in udp_recvmsg() on EV56 > Product: Platform Specific/Hardware > Version: 2.5 > KernelVersion: 2.6.22-rc7-git7 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Alpha > AssignedTo: [EMAIL PROTECTED] > ReportedBy: [EMAIL PROTECTED] > > > Most recent kernel where this bug did not occur: Occurs in all 2.6.2[12] at > least > Distribution: Debian testing/lenny > Hardware Environment: Digital PWS 433au (EV56) > Software Environment: > Linux utopia 2.6.22-rc7-git7 #1 Thu Jul 8 10:34:17 CDT 2027 alpha GNU/Linux > > Gnu C 4.2.1 > Gnu make 3.81 > binutils (GNU Binutils for Debian) 2.17.50.20070426 > util-linux 2.12r > mount 2.12r > module-init-tools 3.3-pre11 > e2fsprogs 1.40-WIP > xfsprogs 2.8.18 > Linux C Library > libc.2.5 > Dynamic linker (ldd) 2.5 > Procps 3.2.7 > Net-tools 1.60 > Kbd 85: > Sh-utils 5.97 > udev 105 > Modules Loaded ipt_TOS xt_multiport xt_tcpudp xt_state ip6table_mangle > ip6table_filter ip6_tables ipv6 iptable_nat nf_nat nf_conntrack_ipv4 > nf_conntrack iptable_mangle iptable_filter ip_tables x_tables dm_mod serio_raw > mxser_new ide_generic via_rhine mii generic ide_core tulip bitrev crc32 sg > sr_mod cdrom raid1 md_mod loop > > Problem Description: > kernel unaligned acc : 2248 (pc=fffffc0000583de4,va=fffffc00071c382a) > > fffffc0000583bc0 T udp_recvmsg > fffffc0000583ed0 T udp_destroy_sock > > kernel unaligned acc : 1231 (pc=fffffc0000585190,va=fffffc000795e02e) > > fffffc0000585120 T __udp4_lib_rcv > fffffc0000585bf0 T udp_rcv > > This problem does NOT seem to affect my Tsunami/Shark (EV68AL) box running the > same kernel version on the same LAN. Not sure if it's CPU generation related > (EV5 vs EV6), or if it's the NIC (via_rhine on the EV5 vs e100 on the EV6). > > Steps to reproduce: > According to tshark, the only UDP packets are DHCP packets: > > 1815064200.131003 10.5.128.1 -> 255.255.255.255 DHCP DHCP Offer - > Transaction ID 0x27c6 > >
That output isn't terribly illuminating. We'd need to work out which code corresponds with pc=fffffc0000583de4 and pc=fffffc0000585190. I don't think there's necessarily a bug here: that's just the kernel telling us that there are unaligned accesses which got successfully fixed up, so we're being perhaps a bit inefficient. Yes? - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
