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    SubjectRe: [uml-devel] [UML] Problems building and running 2.6.17-rc4 on x86-64
    On Wed, May 17, 2006 at 08:36:40AM +0200, Blaisorblade wrote:
    > On Wednesday 17 May 2006 04:39, Alberto Bertogli wrote:
    > > On Tue, May 16, 2006 at 03:12:44PM -0400, Jeff Dike wrote:
    > > > On Mon, May 15, 2006 at 12:29:58PM -0300, Alberto Bertogli wrote:
    > > Here it is. While the patch worked, it was for 2.6.16, and I'm using
    > > 2.6.17-rc4, I hope that's not a problem.
    >
    > Guess not - I'll test this patch soon because I have the same problem, however
    > are you running a 2.6.16 host?
    >
    > If so, can you verify whether on a 2.6.15 host kernel the same binary runs
    > fine (as is the case for me)?

    I tried running 2.6.15.1 and 2.6.17-rc1 on the host. Both advanced more
    than 2.6.17-rc4, but failed in different ways.

    2.6.15.1 was the most successful one, it managed to boot and it kinda
    worked, but I got semi-random segmentation faults when running some apps
    like apt-get. I reported this some time ago to Jeff Dike.

    2.6.17-rc1 didn't got that far, and 'panic'ed when starting runlevel 2;
    I attach the output below.

    Do you want me to try anything else?

    Thanks,
    Alberto


    Initializing random number generator...done.
    INIT: Entering runlevel: 2
    INIT: PANIC: segmentation violation! sleeping for 30 seconds.
    [42949380.750000] BUG: failure at /usr/src/linux-2.6.17-rc4/include/linux/elfcore.h:95/elf_core_copy_regs()!
    [42949380.750000] Kernel panic - not syncing: BUG!
    [42949380.750000]
    [42949380.750000] Modules linked in:
    [42949380.750000] Pid: 444, comm: init Not tainted 2.6.17-rc4
    [42949380.750000] RIP: 0033:[<0000000040145896>]
    [42949380.750000] RSP: 0000007f7f811f30 EFLAGS: 00000246
    [42949380.750000] RAX: 0000000000000000 RBX: 0000000040017600 RCX: ffffffffffffffff
    [42949380.750000] RDX: 0000000000000000 RSI: 0000007f7f811f48 RDI: 0000000000000002
    [42949380.750000] RBP: 0000000000000000 R08: 00000000000001bc R09: 000000000000000b
    [42949380.750000] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000002
    [42949380.750000] R13: 00000000005096bc R14: 0000000000406b21 R15: 0000000000406b21
    [42949380.750000] Call Trace:
    [42949380.750000] 67efb768: [<6001a10a>] panic_exit+0x2a/0x50
    [42949380.750000] 67efb778: [<60044acc>] notifier_call_chain+0x1c/0x30
    [42949380.750000] 67efb798: [<600348cf>] panic+0xcf/0x170
    [42949380.750000] 67efb7b8: [<600c336f>] ext3_mark_iloc_dirty+0xf/0x20
    [42949380.750000] 67efb7f8: [<600c7000>] ext3_orphan_del+0x1d0/0x280
    [42949380.750000] 67efb808: [<600c3528>] ext3_dirty_inode+0x78/0xa0
    [42949380.750000] 67efb838: [<6009d1c2>] __mark_inode_dirty+0x102/0x1b0
    [42949380.750000] 67efb848: [<600285b4>] set_signals+0x14/0x30
    [42949380.750000] 67efb858: [<600742c8>] kmem_cache_alloc+0x48/0x70
    [42949380.750000] 67efb878: [<600aa4e4>] elf_core_dump+0x264/0x2f0
    [42949380.750000] 67efb938: [<6007554d>] do_truncate+0x5d/0x70
    [42949380.750000] 67efb9a8: [<600842e7>] do_coredump+0x2c7/0x370
    [42949380.750000] 67efba48: [<60040bd9>] recalc_sigpending+0x19/0x20
    [42949380.750000] 67efba58: [<60041064>] __dequeue_signal+0x84/0xf0
    [42949380.750000] 67efbad8: [<600432e3>] get_signal_to_deliver+0x3e3/0x400
    [42949380.750000] 67efbb68: [<60065b6d>] __handle_mm_fault+0x23d/0x280
    [42949380.750000] 67efbb88: [<6013f13e>] __up_read+0x1e/0xc0
    [42949380.750000] 67efbbe8: [<60017866>] kern_do_signal+0x86/0x230
    [42949380.750000] 67efbc00: [<6001b370>] copy_chunk_from_user+0x0/0x40
    [42949380.750000] 67efbc18: [<600197cb>] segv+0x21b/0x300
    [42949380.750000] 67efbcb8: [<6002b8f8>] wait_stub_done+0x58/0x110
    [42949380.750000] 67efbce8: [<600434de>] sys_rt_sigprocmask+0x7e/0x120
    [42949380.750000] 67efbd28: [<60017a30>] do_signal+0x20/0x30
    [42949380.750000] 67efbd38: [<60016795>] interrupt_end+0x45/0x60
    [42949380.750000] 67efbd58: [<6002be8c>] userspace+0x15c/0x2f0
    [42949380.750000] 67efbd78: [<6001b502>] copy_to_user_skas+0x72/0x90
    [42949380.750000] 67efbde8: [<6001a8fe>] fork_handler+0xee/0x100
    [42949380.750000]
    [42949380.750000] * route del -host 192.168.0.2 dev tap0
    [42949380.750000] * bash -c echo 0 > /proc/sys/net/ipv4/conf/tap0/proxy_arp


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