About the influence of the DVD device which was out of order that a core file was output
Issue
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A machine has rebooted and output core file when a customer was going to mount an out-of-order DVD device.
[a part of /var/log/messages file]hda: status error: status=0x4b { DriveReady DataRequest Index Error } hda: status error: error=0x4bIllegalLengthIndication EndOfMedia MediaChangeRequested LastFailedSense 0x04 hda: drive not ready for command hda: status error: status=0x20 { DeviceFault } hda: status error: error=0x20LastFailedSense 0x02 hda: ATAPI reset complete hda: status error: status=0x20 { DeviceFault } hda: status error: error=0x20LastFailedSense 0x02 hda: status error: status=0x20 { DeviceFault } hda: status error: error=0x20LastFailedSense 0x02 hda: ATAPI reset complete hda: status error: status=0x20 { DeviceFault } hda: status error: error=0x20LastFailedSense 0x02 hda: ATAPI reset complete hda: status error: status=0x20 { DeviceFault } hda: status error: error=0x20LastFailedSense 0x02 hda: status error: status=0x20 { DeviceFault } hda: status error: error=0x20LastFailedSense 0x02 hda: ATAPI reset complete hda: status error: status=0x20 { DeviceFault } hda: status error: error=0x20LastFailedSense 0x02 hda: ATAPI reset complete hda: status error: status=0x20 { DeviceFault } hda: status error: error=0x20LastFailedSense 0x02 hda: status error: status=0x20 { DeviceFault } hda: status error: error=0x20LastFailedSense 0x02 hda: ATAPI reset complete hda: status error: status=0x20 { DeviceFault } hda: status error: error=0x20LastFailedSense 0x02 hda: ATAPI reset complete hda: status error: status=0x20 { DeviceFault } hda: status error: error=0x20LastFailedSense 0x02 Unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c015e04f *pde = 2fea5001 Oops: 0002 [#1] SMP Modules linked in: nls_utf8 vfat fat nfs mptctl ipmi_devintf ipmi_si ipmi_msghandler nfsd exportfs lockd nfs_acl md5 ipv6 i2c_dev i2c_core sunrpc ip_nat_ftp iptable_nat ip_conntrack_ftp ipt_REJECT ipt_state ip_conntrack iptable_filter ip_tables ide_dump cciss_dump scsi_dump diskdump zlib_deflate usb_storage dm_mirror dm_mod button battery ac joydev ehci_hcd uhci_hcd hw_random e1000 bnx2 bonding(U) sg st ext3 jbd ata_piix libata cciss mptscsih qla2400(U) mptsas qla2300(U) mptspi mptscsi qla2xxx(U) qla2xxx_conf(U) mptbase sd_mod scsi_mod CPU: 0 EIP: 0060:[<c015e04f>] Not tainted VLI EFLAGS: 00010287 (2.6.9-67.0.1.ELsmp) EIP is at create_empty_buffers+0x15/0x70 eax: 00000000 ebx: c1178ac0 ecx: 00000001 edx: 00000000 esi: 00000000 edi: 00000000 ebp: c1178ac0 esp: c5923d04 ds: 007b es: 007b ss: 0068 Process mount (pid: 14845, threadinfo=c5923000 task=f6dca1b0) Stack: 0000000c f601f6e4 00000000 c015e90c 00000220 00000046 00000001 f601f6f0 00008000 f601f6e8 00000000 00000000 c01c302c 00000001 f601f634 c01620ea 00000000 f601f6e8 c1178ac0 f601f6e4 00000000 00000000 c0140922 c1178ac0 Call Trace: [<c015e90c>] block_read_full_page+0x61/0x2af [<c01c302c>] radix_tree_node_alloc+0x10/0x49 [<c01620ea>] blkdev_get_block+0x0/0x46 [<c0140922>] add_to_page_cache+0x8e/0x95 [<c01469b1>] read_pages+0x97/0xdd [<c01443bc>] buffered_rmqueue+0x17d/0x1a5 [<c0144498>] __alloc_pages+0xb4/0x2a6 [<c0146cd5>] do_page_cache_readahead+0x138/0x158 [<c0146e5b>] page_cache_readahead+0x166/0x258 [<c0140fb5>] do_generic_mapping_read+0x138/0x445 [<c015dec5>] invalidate_bh_lru+0x26/0x36 [<c014150c>] __generic_file_aio_read+0x181/0x1b2 [<c01412c2>] file_read_actor+0x0/0xc9 [<c014161c>] generic_file_read+0x98/0xaf [<c015b081>] __dentry_open+0xda/0x18f [<c015af45>] filp_open+0x51/0x65 [<c012051d>] autoremove_wake_function+0x0/0x2d [<c0162246>] block_llseek+0x30/0xeb [<c0162216>] block_llseek+0x0/0xeb [<c015ba62>] vfs_read+0xb6/0xe2 [<c015bc77>] sys_read+0x3c/0x62 [<c02d8613>] syscall_call+0x7/0xb Code: f0 e8 fd fe ff ff 89 44 24 04 8b 44 24 04 83 c4 0c 5b 5e 5f 5d c3 57 89 cf b9 01 00 00 00 56 53 89 c3 e8 d8 f7 ff ff 89 c6 89 c2 <09> 3a 89 d0 8b 52 04 85 d2 75 f5 89 70 04 8b 43 10 83 c0 4c e8
Environment
- Red Hat Enterprise Linux 4
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