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Message-Id: <20061214203044.915cedfc.akpm@osdl.org> Date: Thu, 14 Dec 2006 20:30:44 -0800 From: Andrew Morton <akpm@...l.org> To: NeilBrown <neilb@...e.de> Cc: nfs@...ts.sourceforge.net, linux-kernel@...r.kernel.org, Chuck Lever <chuck.lever@...cle.com> Subject: Re: [PATCH 007 of 14] knfsd: SUNRPC: Provide room in svc_rqst for larger addresses On Wed, 13 Dec 2006 10:59:11 +1100 NeilBrown <neilb@...e.de> wrote: > From: Chuck Lever <chuck.lever@...cle.com> > Expand the rq_addr field to allow it to contain larger addresses. This patch breaks the NFS server on my heroically modern RH FC1 machine. There's a mysterious 30-second pause when initscripts are bringing up mountd. showmount (from a FC5 client) works: box:/usr/src/25> 0 showmount -e vmm Export list for vmm: / * /mnt/hda5 * But things get really exciting when we try to mount it: box:/usr/src/25> 0 mount vmm:/mnt/hda5 /mnt *** buffer overflow detected ***: mount terminated ======= Backtrace: ========= /lib64/libc.so.6(__chk_fail+0x2f)[0x32adbdfaef] mount[0x40bcf8] mount[0x4044c5] mount[0x405850] mount[0x406388] /lib64/libc.so.6(__libc_start_main+0xf4)[0x32adb1ce54] mount[0x4034a9] ======= Memory map: ======== 00400000-00414000 r-xp 00000000 08:01 3041513 /bin/mount 00513000-00514000 rw-p 00013000 08:01 3041513 /bin/mount 00514000-00516000 rw-p 00514000 00:00 0 00613000-00615000 rw-p 00013000 08:01 3041513 /bin/mount 00615000-00636000 rw-p 00615000 00:00 0 [heap] 32ad900000-32ad91a000 r-xp 00000000 08:01 1619031 /lib64/ld-2.4.so 32ada19000-32ada1a000 r--p 00019000 08:01 1619031 /lib64/ld-2.4.so 32ada1a000-32ada1b000 rw-p 0001a000 08:01 1619031 /lib64/ld-2.4.so 32adb00000-32adc3f000 r-xp 00000000 08:01 1619091 /lib64/libc-2.4.so 32adc3f000-32add3f000 ---p 0013f000 08:01 1619091 /lib64/libc-2.4.so 32add3f000-32add43000 r--p 0013f000 08:01 1619091 /lib64/libc-2.4.so 32add43000-32add44000 rw-p 00143000 08:01 1619091 /lib64/libc-2.4.so 32add44000-32add49000 rw-p 32add44000 00:00 0 32ade00000-32ade02000 r-xp 00000000 08:01 1619011 /lib64/libuuid.so.1.2 32ade02000-32adf02000 ---p 00002000 08:01 1619011 /lib64/libuuid.so.1.2 32adf02000-32adf03000 rw-p 00002000 08:01 1619011 /lib64/libuuid.so.1.2 32ae000000-32ae002000 r-xp 00000000 08:01 1619095 /lib64/libdl-2.4.so 32ae002000-32ae102000 ---p 00002000 08:01 1619095 /lib64/libdl-2.4.so 32ae102000-32ae103000 r--p 00002000 08:01 1619095 /lib64/libdl-2.4.so 32ae103000-32ae104000 rw-p 00003000 08:01 1619095 /lib64/libdl-2.4.so 32ae200000-32ae20e000 r-xp 00000000 08:01 1619005 /lib64/libdevmapper.so.1.02 32ae20e000-32ae30e000 ---p 0000e000 08:01 1619005 /lib64/libdevmapper.so.1.02 32ae30e000-32ae310000 rw-p 0000e000 08:01 1619005 /lib64/libdevmapper.so.1.02 32ae400000-32ae408000 r-xp 00000000 08:01 1619066 /lib64/libblkid.so.1.0 32ae408000-32ae508000 ---p 00008000 08:01 1619066 /lib64/libblkid.so.1.0 32ae508000-32ae509000 rw-p 00008000 08:01 1619066 /lib64/libblkid.so.1.0 32b0600000-32b060d000 r-xp 00000000 08:01 1619093 /lib64/libgcc_s-4.1.1-20060525.so.1 32b060d000-32b070d000 ---p 0000d000 08:01 1619093 /lib64/libgcc_s-4.1.1-20060525.so.1 32b070d000-32b070e000 rw-p 0000d000 08:01 1619093 /lib64/libgcc_s-4.1.1-20060525.so.1 32b2800000-32b2814000 r-xp 00000000 08:01 1619102 /lib64/libselinux.so.1 32b2814000-32b2913000 ---p 00014000 08:01 1619102 /lib64/libselinux.so.1 32b2913000-32b2915000 rw-p 00013000 08:01 1619102 /lib64/libselinux.so.1 32b2915000-32b2916000 rw-p 32b2915000 00:00 0 32b2a00000-32b2a38000 r-xp 00000000 08:01 1619101 /lib64/libsepol.so.1 32b2a38000-32b2b37000 ---p 00038000 08:01 1619101 /lib64/libsepol.so.1 32b2b37000-32b2b38000 rw-p 00037000 08:01 1619101 /lib64/libsepol.so.1 32b2b38000-32b2b42000 rw-p 32b2b38000 00:00 0 2b9eea00c000-2b9eea00d000 rw-p 2b9eea00c000 00:00 0 2b9eea032000-2b9eea036000 rw-p 2b9eea032000 00:00 0 2b9eea036000-2b9eea039000 r-xp 00000000 08:01 1618858 /lib64/libsetrans.so.0 2b9eea039000-2b9eea138000 ---p 00003000 08:01 1618858 /lib64/libsetrans.so.0 2b9eea138000-2b9eea139000 rw-p 00002000 08:01 1618858 /lib64/libsetrans.so.0 2b9eea139000-2b9eea143000 r-xp 00000000 08:01 1619053 /lib64/libnss_files-2.4.so 2b9eea143000-2b9eea242000 ---p 0000a000 08:01 1619053 /lib64/libnss_files-2.4.so 2b9eea242000-2b9eea243000 r--p 00009000 08:01 1619053 /lib64/libnss_files-2.4.so 2b9eea243000-2b9eea244000 rw-p 0000a000 08:01 1619053 /lib64/libnss_files-2.4.so 7fffc0a88000-7fffc0a9e000 rw-p 7fffc0a88000 00:00 0 [stack] ffffffffff600000-ffffffffffe00000 ---p 00000000 00:00 0 [vdso] zsh: abort 0 mount vmm:/mnt/hda5 /mnt btw, knfsd-sunrpc-cache-remote-peers-address-in-svc_sock.patch breaks the build: net/sunrpc/svcsock.c: In function 'svc_recvfrom': net/sunrpc/svcsock.c:581: error: 'svsk' undeclared (first use in this function) net/sunrpc/svcsock.c:581: error: (Each undeclared identifier is reported only once but the next patch (knfsd-sunrpc-dont-set-msg_name-and-msg_namelen-when-calling-sock_recvmsg.patch) fixes that. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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