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SubjectRe: [BUG 2.6.36] early serial console undefined refs
* Yinghai Lu (yinghai@kernel.org) wrote:
> On 10/23/2010 10:37 AM, Yinghai Lu wrote:
> > On 10/23/2010 07:43 AM, Mathieu Desnoyers wrote:
> >> Hi,
> >>
> >> Building 2.6.36 fails for me with the following link error (config below).
> >> I think commit f4ed2877b16e8146427306aea8819adac5c88374 is very likely to be the
> >> culprit, but given other changes that were done afterward, the fix is not as
> >> easy as a simple revert.
> >>
> >> Thoughts ?
> >>
> >> Building modules, stage 2.
> >> MODPOST 65 modules
> >> LD arch/x86/boot/setup.elf
> >> arch/x86/boot/early_serial_console.o: In function `early_serial_init':
> >> /home/compudj/git/morestable/linux-2.6-lttng/arch/x86/boot/early_serial_console.c:40: undefined reference to `early_serial_base'
> >
> > your tree may have problem. Did you try clean tree from Linus ?
> >
> > early_seria_console.c
> >
> > #include "boot.h"
> > ...
> > static void early_serial_init(int port, int baud)
> >
> >
> > and in boot.h, we have
> > /* early_serial_console.c */
> > extern int early_serial_base;
>
> at least linus's tree and tip are ok with your config

I did a make clean, and it fixed the problem. I tried checking out a 2.6.35.7
kernel, build it, checkout 2.6.36 on top, then build without make clean, and it
works fine now. So I cannot reproduce the problem.

Thanks for the hint!

Mathieu


>
> MODPOST 65 modules
> CC arch/x86/boot/a20.o
> CC arch/x86/boot/cmdline.o
> AS arch/x86/boot/copy.o
> HOSTCC arch/x86/boot/mkcpustr
> CC arch/x86/ia32/ia32_aout.mod.o
> CC arch/x86/boot/cpucheck.o
> CC arch/x86/kvm/kvm-intel.mod.o
> CC arch/x86/boot/early_serial_console.o
> CC arch/x86/boot/edd.o
> CC arch/x86/kvm/kvm.mod.o
> VOFFSET arch/x86/boot/voffset.h
> CC arch/x86/oprofile/oprofile.mod.o
> CC crypto/crc32c.mod.o
> CC drivers/ata/sata_mv.mod.o
> CC drivers/base/firmware_class.mod.o
> LDS arch/x86/boot/compressed/vmlinux.lds
> AS arch/x86/boot/compressed/head_64.o
> CC drivers/block/cryptoloop.mod.o
> CC arch/x86/boot/compressed/misc.o
> CC drivers/block/loop.mod.o
> CC drivers/cpufreq/cpufreq_ondemand.mod.o
> CC drivers/firmware/dcdbas.mod.o
> CC drivers/hwmon/hwmon-vid.mod.o
> CC drivers/hwmon/it87.mod.o
> CC drivers/input/input-polldev.mod.o
> CC drivers/md/dm-crypt.mod.o
> CC arch/x86/boot/compressed/string.o
> CC drivers/md/dm-delay.mod.o
> CC arch/x86/boot/compressed/cmdline.o
> CC drivers/md/dm-log.mod.o
> CC arch/x86/boot/compressed/early_serial_console.o
> CC drivers/md/dm-mirror.mod.o
> OBJCOPY arch/x86/boot/compressed/vmlinux.bin
> CC drivers/md/dm-multipath.mod.o
> GZIP arch/x86/boot/compressed/vmlinux.bin.gz
> CC drivers/md/dm-region-hash.mod.o
> CC drivers/md/dm-round-robin.mod.o
> CC drivers/md/dm-snapshot.mod.o
> CC drivers/md/dm-zero.mod.o
> CC drivers/net/bonding/bonding.mod.o
> CC drivers/net/dummy.mod.o
> CC drivers/net/e1000/e1000.mod.o
> CC drivers/net/e1000e/e1000e.mod.o
> CC drivers/net/s2io.mod.o
> CC drivers/net/skge.mod.o
> CC drivers/net/sky2.mod.o
> CC drivers/net/tun.mod.o
> CC drivers/scsi/dpt_i2o.mod.o
> CC drivers/scsi/qla4xxx/qla4xxx.mod.o
> CC drivers/scsi/scsi_transport_iscsi.mod.o
> CC drivers/scsi/scsi_wait_scan.mod.o
> MKPIGGY arch/x86/boot/compressed/piggy.S
> AS arch/x86/boot/compressed/piggy.o
> CC drivers/usb/misc/cytherm.mod.o
> LD arch/x86/boot/compressed/vmlinux
> CC arch/x86/boot/main.o
> CC drivers/usb/serial/pl2303.mod.o
> CC arch/x86/boot/mca.o
> CC arch/x86/boot/memory.o
> CC drivers/usb/serial/usbserial.mod.o
> CC arch/x86/boot/pm.o
> AS arch/x86/boot/pmjump.o
> CC drivers/video/output.mod.o
> CC arch/x86/boot/printf.o
> CC lib/libcrc32c.mod.o
> CC arch/x86/boot/regs.o
> CC arch/x86/boot/string.o
> CC net/ipv4/inet_diag.mod.o
> CC arch/x86/boot/tty.o
> CC arch/x86/boot/video.o
> CC net/ipv4/tcp_diag.mod.o
> CC arch/x86/boot/video-mode.o
> CC net/netfilter/nfnetlink.mod.o
> CC arch/x86/boot/version.o
> CC net/netfilter/nfnetlink_log.mod.o
> CC arch/x86/boot/video-vga.o
> CC arch/x86/boot/video-vesa.o
> CC net/netfilter/nfnetlink_queue.mod.o
> CC arch/x86/boot/video-bios.o
> CC samples/kprobes/jprobe_example.mod.o
> OBJCOPY arch/x86/boot/vmlinux.bin
> CPUSTR arch/x86/boot/cpustr.h
> ZOFFSET arch/x86/boot/zoffset.h
> CC samples/kprobes/kprobe_example.mod.o
> CC arch/x86/boot/cpu.o
> AS arch/x86/boot/header.o
> LD arch/x86/boot/setup.elf
> CC samples/kprobes/kretprobe_example.mod.o
> OBJCOPY arch/x86/boot/setup.bin
> BUILD arch/x86/boot/bzImage
> Root device is (8, 6)
> Setup is 12972 bytes (padded to 13312 bytes).
> System is 3475 kB
> CRC f34900df
> Kernel: arch/x86/boot/bzImage is ready (#210)

--
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com


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