Comment 1 for bug 424810

Revision history for this message
Daniel J Blueman (danielblueman) wrote :

When debugging the state of kernel tasks, eg by sending sysctrl-T, there is too much information with a typical login session for the default log buffer size, thus if the process is started earlier, the information is lost (either from dmesg, or /var/log/messages) and the first part of the output truncated:

$ cat /var/log/messages
Sep 19 11:42:32 exige kernel: [<ffffffff812732aa>] ? __up_read+0x9a/0xc0
Sep 19 11:42:32 exige kernel: [ 1803.421542] [<ffffffff811293f9>] do_vfs_ioctl+0x79/0x370
Sep 19 11:42:32 exige kernel: [ 1803.421542] [<ffffffff81077f79>] ? up_read+0x9/0x10
Sep 19 11:42:32 exige kernel: [ 1803.421542] [<ffffffff81525fe4>] ? do_page_fault+0x194/0x370
Sep 19 11:42:32 exige kernel: [ 1803.421542] [<ffffffff81129771>] sys_ioctl+0x81/0xa0
<snip>

I think it's important to be able to debug kernel problems fully, so this is a quick and safe fix.