On Friday 30 June 2006 09:50, Miao Qingjun wrote: > Hi, > > Two problems > > First one, > when building kernel and LKMs, > WARNING: vmlinux - Section mismatch: reference to .init.text: from .plt > after '' (at offset 0x8347e44) WARNING: vmlinux - Section mismatch: > reference to .init: from .plt after '' (at offset 0x8347e64) WARNING: > vmlinux - Section mismatch: reference to .init.setup: from .plt after '' > (at offset 0x8347ea4) WARNING: vmlinux - Section mismatch: reference to > .init.text:nosmp from .plt after '' (at offset 0x8347f20) WARNING: vmlinux > - Section mismatch: reference to .init.setup:__setup_nosmp from .plt after > '' (at offset 0x8347f28) WARNING: vmlinux - Section mismatch: reference to > .init.text:maxcpus from .plt after '' (at offset 0x8347f2c) ... > ... > > So when gdb loads LKM symbols, it seems .init.text and .exit.text sections > overlapped with .text section. It isn't a problem we haven't fully analized but which always seemed harmless - but building with dynamic linking disabled makes it go away.
However, note that it is a kernel build helper (not binutils) which doesn't know that .plt sections, which are needed for dynamic linking are allowed to reference .init* sections (while it knows this for other sections). Its purpose is simply to avoid .text referencing .init, since such a reference will fail when .init code and data get freed (soon after the boot). -- Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade http://www.user-mode-linux.org/~blaisorblade Chiacchiera con i tuoi amici in tempo reale! http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
