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    Subject[Bug] 2.5.44-ac2 cdrom eject panic
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    Hi,

    I got this nice error after doing an 'eject /cdrom'


    Oct 25 11:28:29 natsu kernel: Kernel panic: Unable to find device associated with request
    Oct 25 11:28:29 natsu kernel: Debug: sleeping function called from illegal context at include/linux/rwsem.h:43
    Oct 25 11:28:29 natsu kernel: Call Trace:
    Oct 25 11:28:29 natsu kernel: [get_super_to_sync+127/176] get_super_to_sync+0x7f/0xb0
    Oct 25 11:28:29 natsu kernel: [sync_inodes+21/160] sync_inodes+0x15/0xa0
    Oct 25 11:28:29 natsu kernel: [sys_sync+27/64] sys_sync+0x1b/0x40
    Oct 25 11:28:29 natsu kernel: [panic+255/272] panic+0xff/0x110
    Oct 25 11:28:29 natsu kernel: [scsi_request_fn+637/1200] scsi_request_fn+0x27d/0x4b0
    Oct 25 11:28:29 natsu kernel: [generic_unplug_device+102/112] generic_unplug_device+0x66/0x70
    Oct 25 11:28:29 natsu kernel: [blk_do_rq+93/144] blk_do_rq+0x5d/0x90
    Oct 25 11:28:29 natsu kernel: [scsi_cmd_ioctl+471/656] scsi_cmd_ioctl+0x1d7/0x460
    Oct 25 11:28:29 natsu kernel: [cdrom_ioctl+69/3376] cdrom_ioctl+0x45/0xd30
    Oct 25 11:28:29 natsu kernel: [blkdev_open+56/80] blkdev_open+0x38/0x50
    Oct 25 11:28:29 natsu kernel: [dentry_open+366/432] dentry_open+0x16e/0x1b0
    Oct 25 11:28:29 natsu kernel: [filp_open+104/112] filp_open+0x68/0x70
    Oct 25 11:28:29 natsu kernel: [blkdev_ioctl+176/1104] blkdev_ioctl+0xb0/0x4eb
    Oct 25 11:28:29 natsu kernel: [sys_ioctl+234/592] sys_ioctl+0xea/0x340
    Oct 25 11:28:29 natsu kernel: [syscall_call+7/11] syscall_call+0x7/0xb
    Oct 25 11:28:29 natsu kernel:
    Oct 25 11:28:29 natsu kernel: ------------[ cut here ]------------
    Oct 25 11:28:29 natsu kernel: kernel BUG at fs/buffer.c:1248!
    Oct 25 11:28:29 natsu kernel: invalid operand: 0000
    Oct 25 11:28:29 natsu kernel: nls_cp437 vfat fat nls_iso8859-1 isofs sg ppp_generic slhc cls_u32 sch_sfq sch_cbq snd-seq-midi snd-emu10k1-synth snd-emux-synth snd-seq-midi-emul snd-seq-virmidi snd-seq-oss snd-seq-midi-event snd-seq snd-pcm-oss snd-mixer-oss snd-ens1371 snd-emu10k1 snd-pcm snd-timer snd-rawmidi snd-seq-device snd-ac97-codec snd-util-mem snd-hwdep snd soundcore ipt_LOG ipt_unclean ipt_REJECT ipt_state iptable_filter iptable_nat ip_conntrack_ftp ipt_helper ip_tables ip_conntrack uhci-hcd usbcore 8139too mii crc32 joydev analog emu10k1-gp gameport rtc
    Oct 25 11:28:29 natsu kernel: CPU: 0
    Oct 25 11:28:29 natsu kernel: EIP: 0060:[lookup_bh+173/186] Not tainted
    Oct 25 11:28:29 natsu kernel: EFLAGS: 00010002
    Oct 25 11:28:29 natsu kernel: EIP is at lookup_bh+0xad/0xba
    Oct 25 11:28:29 natsu kernel: eax: 00000001 ebx: c6a86000 ecx: 00000000 edx: c94f0000
    Oct 25 11:28:29 natsu kernel: esi: 012c402f edi: 012c402f ebp: 00000000 esp: c6a87c68
    Oct 25 11:28:29 natsu kernel: ds: 0068 es: 0068 ss: 0068
    Oct 25 11:28:29 natsu kernel: Process eject (pid: 21077, threadinfo=c6a86000 task=caceadc0)
    Oct 25 11:28:29 natsu kernel: Stack: 00000000 c6a86000 012c402f 00000000 c133d640 c0146f27 c133d640 012c402f
    Oct 25 11:28:29 natsu kernel: 00000000 00000200 c6a86000 012c402f 00000000 c133d640 c0146fa7 c133d640
    Oct 25 11:28:29 natsu kernel: 012c402f 00000000 00000200 c6a86000 012c402f 00000000 c133d640 c0147027
    Oct 25 11:28:29 natsu kernel: Call Trace:
    Oct 25 11:28:29 natsu kernel: [__find_get_block+55/128] __find_get_block+0x37/0x80
    Oct 25 11:28:29 natsu kernel: [__getblk+55/128] __getblk+0x37/0x80
    Oct 25 11:28:29 natsu kernel: [__bread+55/144] __bread+0x37/0x90
    Oct 25 11:28:29 natsu kernel: [<d33ae20d>] default_fat_bread+0x2d/0x40 [fat]
    Oct 25 11:28:29 natsu kernel: [<d33ae09e>] fat_bread+0x1e/0x30 [fat]
    Oct 25 11:28:29 natsu kernel: [<d33b3e4d>] fat_write_inode_R0ba59c09+0x6d/0x1f0 [fat]
    Oct 25 11:28:29 natsu kernel: [write_inode+68/80] write_inode+0x44/0x50
    Oct 25 11:28:29 natsu kernel: [__sync_single_inode+373/416] __sync_single_inode+0x175/0x1a0
    Oct 25 11:28:29 natsu kernel: [sync_sb_inodes+396/576] sync_sb_inodes+0x18c/0x240
    Oct 25 11:28:29 natsu kernel: [sync_inodes_sb+125/160] sync_inodes_sb+0x7d/0xa0
    Oct 25 11:28:29 natsu kernel: [sync_inodes+43/160] sync_inodes+0x2b/0xa0
    Oct 25 11:28:29 natsu kernel: [sys_sync+27/64] sys_sync+0x1b/0x40
    Oct 25 11:28:29 natsu kernel: [panic+255/272] panic+0xff/0x110
    Oct 25 11:28:29 natsu kernel: [scsi_request_fn+637/1200] scsi_request_fn+0x27d/0x4b0
    Oct 25 11:28:29 natsu kernel: [generic_unplug_device+102/112] generic_unplug_device+0x66/0x70
    Oct 25 11:28:29 natsu kernel: [blk_do_rq+93/144] blk_do_rq+0x5d/0x90
    Oct 25 11:28:29 natsu kernel: [scsi_cmd_ioctl+471/656] scsi_cmd_ioctl+0x1d7/0x460
    Oct 25 11:28:29 natsu kernel: [cdrom_ioctl+69/3376] cdrom_ioctl+0x45/0xd30
    Oct 25 11:28:29 natsu kernel: [blkdev_open+56/80] blkdev_open+0x38/0x50
    Oct 25 11:28:29 natsu kernel: [dentry_open+366/432] dentry_open+0x16e/0x1b0
    Oct 25 11:28:29 natsu kernel: [filp_open+104/112] filp_open+0x68/0x70
    Oct 25 11:28:29 natsu kernel: [blkdev_ioctl+176/1104] blkdev_ioctl+0xb0/0x4eb
    Oct 25 11:28:29 natsu kernel: [sys_ioctl+234/592] sys_ioctl+0xea/0x340
    Oct 25 11:28:29 natsu kernel: [syscall_call+7/11] syscall_call+0x7/0xb
    Oct 25 11:28:29 natsu kernel:
    Oct 25 11:28:29 natsu kernel: Code: 0f 0b e0 04 12 6d 2b c0 e9 6d ff ff ff e8 d5 d5 fb ff e9 7d
    Oct 25 11:28:29 natsu kernel: <6>note: eject[21077] exited with preempt_count 2
    Oct 25 11:30:18 natsu kernel: SysRq : SAK
    Oct 25 11:30:18 natsu kernel: SAK: killed process 479 (XFree86): fd#4 opened to the tty
    Oct 25 11:30:18 natsu kernel: MTRR: setting reg 1
    Oct 25 11:30:19 natsu modprobe: modprobe: Can't locate module char-major-10-134
    Oct 25 11:30:20 natsu kernel: MTRR: setting reg 1
    Oct 25 11:30:20 natsu last message repeated 4 times
    Oct 25 11:30:32 natsu kernel: SysRq : Emergency Sync
    Oct 25 11:30:32 natsu kernel: Syncing device sd(8,22) ... OK
    Oct 25 11:30:32 natsu kernel: Syncing device sd(8,17) ... OK
    Oct 25 11:30:32 natsu kernel: Syncing device sd(8,23) ... OK
    Oct 25 11:30:32 natsu kernel: Syncing device sd(8,24) ... OK
    Oct 25 11:30:32 natsu kernel: Syncing device sd(8,1) ... OK
    Oct 25 11:30:32 natsu kernel: Syncing device ide0(3,1) ... OK
    Oct 25 11:30:32 natsu kernel: Syncing device ide0(3,69) ... OK
    Oct 25 11:30:32 natsu kernel: Done.
    Oct 25 11:30:34 natsu kernel: SysRq : Emergency Remount R/O
    Oct 25 11:30:34 natsu kernel: Remounting device sd(8,22) ... OK

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