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Message-ID: <20101024211824.GA19172@Krystal> Date: Sun, 24 Oct 2010 17:18:24 -0400 From: Mathieu Desnoyers <mathieu.desnoyers@...icios.com> To: Yinghai Lu <yinghai@...nel.org> Cc: linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...ux.intel.com>, Pekka Enberg <penberg@...helsinki.fi>, Ingo Molnar <mingo@...hat.com> Subject: Re: [BUG 2.6.36] early serial console undefined refs * Yinghai Lu (yinghai@...nel.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 -- 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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