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    SubjectOops while booting 2.6.34-rc0 (block pull busted)
    Date
    Hi,

    It looks like block tree that has been pulled today into mainline is
    busted, I am getting the Opps below on boot with the following commit:

    commit b1bf9368407ae7e89d8a005bb40beb70a41df539
    Merge: 524df55 4671a13
    Author: Linus Torvalds <torvalds@linux-foundation.org>
    Date: Mon Mar 1 09:00:29 2010 -0800

    Merge branch 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block


    but not with the previous one:

    commit 524df55725217b13d5a232fb5badb5846418ea0e
    Merge: 0f45339 6679ee1
    Author: Linus Torvalds <torvalds@linux-foundation.org>
    Date: Mon Mar 1 08:58:44 2010 -0800

    Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6

    This is on plain Fedora 12 VM.

    Thanks.

    --
    Dmitry

    sd 2:0:0:0: Attached scsi generic sg1 type 0
    sd 2:0:0:0: [sda] 16777216 512-byte logical blocks: (8.58 GB/8.00 GiB)
    sd 2:0:0:0: [sda] Write Protect is off
    sd 2:0:0:0: [sda] Cache data unavailable
    sd 2:0:0:0: [sda] Assuming drive cache: write through
    sd 2:0:0:0: [sda] Cache data unavailable
    sd 2:0:0:0: [sda] Assuming drive cache: write through
    sda: sda1 sda2
    sd 2:0:0:0: [sda] Cache data unavailable
    sd 2:0:0:0: [sda] Assuming drive cache: write through
    sd 2:0:0:0: [sda] Attached SCSI disk
    device-mapper: multipath: version 1.1.1 loaded
    dracut: Scanning devices sda2 for LVM volume groups
    dracut: Reading all physical volumes. This may take a while...
    dracut: Found volume group "VolGroup" using metadata type lvm2
    dracut: 2 logical volume(s) in volume group "VolGroup" now active
    EXT4-fs (dm-0): mounted filesystem with ordered data mode
    BUG: unable to handle kernel NULL pointer dereference at (null)
    IP: [<ffffffff81128ee1>] mpage_end_io_read+0x45/0x6f
    PGD 3b776067 PUD 3b7b1067 PMD 0
    Oops: 0002 [#1] SMP
    last sysfs file: /sys/kernel/uevent_seqnum
    CPU 0
    Modules linked in: dm_multipath mptspi mptscsih mptbase scsi_transport_spi floppy [last unloaded: scsi_wait_scan]

    Pid: 1, comm: init Not tainted 2.6.33 #4 440BX Desktop Reference Platform/VMware Virtual Platform
    RIP: 0010:[<ffffffff81128ee1>] [<ffffffff81128ee1>] mpage_end_io_read+0x45/0x6f
    RSP: 0018:ffff88003ea957b8 EFLAGS: 00010202
    RAX: ffffffff81128e9c RBX: ffff880037740dd0 RCX: 0000000000000000
    RDX: ffff880037f9c088 RSI: 0000000000000000 RDI: 0000000000000000
    RBP: ffff88003ea957d8 R08: 0000000000000000 R09: ffff880037e93c08
    R10: 0000000000000001 R11: 0000000000000001 R12: ffff880037740d80
    R13: 0000000000000001 R14: 0000000000000000 R15: ffff880037740d80
    FS: 00007f7cde1ec700(0000) GS:ffff880001e00000(0000) knlGS:0000000000000000
    CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    CR2: 0000000000000000 CR3: 000000003b79e000 CR4: 00000000000006f0
    DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    Process init (pid: 1, threadinfo ffff88003ea94000, task ffff88003ea98000)
    Stack:
    ffff88003ea957e8 ffff880037fe9208 ffff880037f9c000 0000000000000000
    <0> ffff88003ea957e8 ffffffff811246cd ffff88003ea95838 ffffffff81352f8c
    <0> ffff88003ea95828 ffff88003b7072f8 ffff88003ea95838 ffff880037f9c000
    Call Trace:
    [<ffffffff811246cd>] bio_endio+0x2b/0x2d
    [<ffffffff81352f8c>] dec_pending+0x13d/0x15c
    [<ffffffff81353bd2>] __split_and_process_bio+0x510/0x52b
    [<ffffffff81353f8c>] dm_request+0x1cd/0x1e0
    [<ffffffff811eb999>] generic_make_request+0x23b/0x2b0
    [<ffffffff81356c78>] ? linear_merge+0x0/0x5d
    [<ffffffff813540bf>] ? dm_merge_bvec+0xcb/0xec
    [<ffffffff811ebae0>] submit_bio+0xd2/0xef
    [<ffffffff81128e25>] mpage_bio_submit+0x27/0x2b
    [<ffffffff811293c6>] do_mpage_readpage+0x3e0/0x483
    [<ffffffff810cb385>] ? ____pagevec_lru_add+0x138/0x14f
    [<ffffffff81129590>] mpage_readpages+0xc5/0x104
    [<ffffffff81175f53>] ? ext4_get_block+0x0/0xe9
    [<ffffffff81175f53>] ? ext4_get_block+0x0/0xe9
    [<ffffffff81173880>] ext4_readpages+0x1d/0x1f
    [<ffffffff810ca855>] __do_page_cache_readahead+0x103/0x176
    [<ffffffff8100a5ce>] ? apic_timer_interrupt+0xe/0x20
    [<ffffffff810ca8e9>] ra_submit+0x21/0x25
    [<ffffffff810cab55>] ondemand_readahead+0x18e/0x1a1
    [<ffffffff810cac25>] page_cache_sync_readahead+0x1c/0x1e
    [<ffffffff810c4209>] generic_file_aio_read+0x201/0x504
    [<ffffffff81101625>] do_sync_read+0xc4/0x101
    [<ffffffff81205803>] ? might_fault+0x21/0x23
    [<ffffffff811c98f3>] ? selinux_file_permission+0x5c/0xb3
    [<ffffffff811bfcfd>] ? security_file_permission+0x16/0x18
    [<ffffffff81101c8c>] vfs_read+0xab/0x108
    [<ffffffff81101da9>] sys_read+0x4a/0x6e
    [<ffffffff81009c32>] system_call_fastpath+0x16/0x1b
    Code: 49 89 fc 41 83 e5 01 48 ff cb 48 c1 e3 04 48 03 5f 48 48 8b 3b 48 83 eb 10 49 3b 5c 24 48 72 06 48 8b 03 0f 0d 08 45 85 ed 74 06 <3e> 80 0f 08 eb 08 3e 80 27 f7
    3e 80 0f
    RIP [<ffffffff81128ee1>] mpage_end_io_read+0x45/0x6f
    RSP <ffff88003ea957b8>
    CR2: 0000000000000000
    ---[ end trace ffacf7730488df2f ]---
    Kernel panic - not syncing: Attempted to kill init!
    Pid: 1, comm: init Tainted: G D 2.6.33 #4
    Call Trace:
    [<ffffffff8142fd51>] panic+0x7a/0x13d
    [<ffffffff8105628b>] ? exit_ptrace+0x38/0x121
    [<ffffffff8104f5b9>] do_exit+0x7a/0x6f3
    [<ffffffff8104bfc9>] ? spin_unlock_irqrestore+0xe/0x10
    [<ffffffff8104cbe2>] ? kmsg_dump+0x12b/0x145
    [<ffffffff81432ff6>] oops_end+0xbf/0xc7
    [<ffffffff8102f8f5>] no_context+0x1fc/0x20b
    [<ffffffff8100f967>] ? nommu_map_sg+0xd1/0xe5
    [<ffffffff8102fa88>] __bad_area_nosemaphore+0x184/0x1a7
    [<ffffffff8100a5ce>] ? apic_timer_interrupt+0xe/0x20
    [<ffffffff8102fb08>] __bad_area+0x48/0x4f
    [<ffffffff81434aab>] ? do_page_fault+0x1bd/0x2a0
    [<ffffffff8102fb22>] bad_area+0x13/0x15
    [<ffffffff81434ab9>] do_page_fault+0x1cb/0x2a0
    [<ffffffff81432475>] page_fault+0x25/0x30
    [<ffffffff81128e9c>] ? mpage_end_io_read+0x0/0x6f
    [<ffffffff81128ee1>] ? mpage_end_io_read+0x45/0x6f
    [<ffffffff811246cd>] bio_endio+0x2b/0x2d
    [<ffffffff81352f8c>] dec_pending+0x13d/0x15c
    [<ffffffff81353bd2>] __split_and_process_bio+0x510/0x52b
    [<ffffffff81353f8c>] dm_request+0x1cd/0x1e0
    [<ffffffff811eb999>] generic_make_request+0x23b/0x2b0
    [<ffffffff81356c78>] ? linear_merge+0x0/0x5d
    [<ffffffff813540bf>] ? dm_merge_bvec+0xcb/0xec
    [<ffffffff811ebae0>] submit_bio+0xd2/0xef
    [<ffffffff81128e25>] mpage_bio_submit+0x27/0x2b
    [<ffffffff811293c6>] do_mpage_readpage+0x3e0/0x483
    [<ffffffff810cb385>] ? ____pagevec_lru_add+0x138/0x14f
    [<ffffffff81129590>] mpage_readpages+0xc5/0x104
    [<ffffffff81175f53>] ? ext4_get_block+0x0/0xe9
    [<ffffffff81175f53>] ? ext4_get_block+0x0/0xe9
    [<ffffffff81173880>] ext4_readpages+0x1d/0x1f
    [<ffffffff810ca855>] __do_page_cache_readahead+0x103/0x176
    [<ffffffff8100a5ce>] ? apic_timer_interrupt+0xe/0x20
    [<ffffffff810ca8e9>] ra_submit+0x21/0x25
    [<ffffffff810cab55>] ondemand_readahead+0x18e/0x1a1
    [<ffffffff810cac25>] page_cache_sync_readahead+0x1c/0x1e
    [<ffffffff810c4209>] generic_file_aio_read+0x201/0x504
    [<ffffffff81101625>] do_sync_read+0xc4/0x101
    [<ffffffff81205803>] ? might_fault+0x21/0x23
    [<ffffffff811c98f3>] ? selinux_file_permission+0x5c/0xb3
    [<ffffffff811bfcfd>] ? security_file_permission+0x16/0x18
    [<ffffffff81101c8c>] vfs_read+0xab/0x108
    [<ffffffff81101da9>] sys_read+0x4a/0x6e
    [<ffffffff81009c32>] system_call_fastpath+0x16/0x1b


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