Bug 475231 - Crash on console tty->driver_data dereference (scribble ?)
Crash on console tty->driver_data dereference (scribble ?)
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
All Linux
low Severity medium
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Assigned To: Peter Martuccelli
Fedora Extras Quality Assurance
: Triaged
Depends On:
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Reported: 2008-12-08 11:25 EST by Curtis Doty
Modified: 2009-12-18 02:12 EST (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Clone Of:
Last Closed: 2009-12-18 02:12:25 EST
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Attachments (Terms of Use)
screen cap of oops (37.61 KB, image/png)
2008-12-08 11:26 EST, Curtis Doty
no flags Details

  None (edit)
Description Curtis Doty 2008-12-08 11:25:18 EST
See attached. Issuing shutdown -r now on console caused sh process to immediately oops kernel--before the shutdown was even initiated.

Hardware: HP ProLiant DL360 G5
Comment 1 Curtis Doty 2008-12-08 11:26:22 EST
Created attachment 326141 [details]
screen cap of oops
Comment 2 Chuck Ebbert 2008-12-08 13:24:36 EST
int vt_ioctl(struct tty_struct *tty, struct file * file,
             unsigned int cmd, unsigned long arg)
        struct vc_data *vc = (struct vc_data *)tty->driver_data;
        struct console_font_op op;      /* used in multiple places here */
        struct kbd_struct * kbd;
        unsigned int console;
        unsigned char ucval;
        void __user *up = (void __user *)arg;
        int i, perm;
        int ret = 0;

==>     console = vc->vc_num;

vc is NULL, i.e. tty->driver_data is NULL
Comment 4 Jerry Vonau 2009-04-12 15:15:00 EDT
*** Bug 495376 has been marked as a duplicate of this bug. ***
Comment 5 Bug Zapper 2009-11-18 05:23:38 EST
This message is a reminder that Fedora 10 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
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Comment 6 Bug Zapper 2009-12-18 02:12:25 EST
Fedora 10 changed to end-of-life (EOL) status on 2009-12-17. Fedora 10 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
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