BUG REPORT -- getting "registered fd 47 twice"
Got a bug report for you guys, please CC me since I'm not subscribed...
I've got a 2.4.24 kernel with the latest uml patch, running on a 2.4.19 host. UML is running just plain, no skas or /dev/anon. I'm using a whole bunch of boot args, enough that I had to expand the array in init/main.c.
Anyways, when I boot it goes through the startup fine, but when it gives the login prompt I see this:
DSC-0-0-0 login: Registering fd 47 twice
Irqs : 3, 3
Ids : 0xa0261138, 0xa0261138
Registering fd 47 twice
Irqs : 3, 3
Ids : 0xa0261138, 0xa0261138
The irq 3 corresponds to CONSOLE_IRQ. When I try and log in it spits out the following, once per character I type:
find_irq_by_fd doesn't have descriptor 47
Then it starts spewing out the following message until I kill the process:
Failed to forward -1439843404 to pid 17758, err = 9
Where 17758 is the pid for bash. With gdb I set a breakpoint in line_setup_irq, and ran a backtrace just before the first error message above. This is what I got:
Breakpoint 5, line_setup_irq (fd=-1608117768, input=-1608117768,
output=-1347667284, data=0xa0261200) at line.c:199
199 {
(gdb) bt
#0 line_setup_irq (fd=-1608117768, input=-1608117768, output=-1347667284,
data=0xa0261200) at line.c:199
#1 0xa0126efe in enable_chan (chans=0xa0261200, data=0xa02611f8)
at chan_kern.c:164
#2 0xa01284af in line_open (lines=0xa0261200, tty=0xaa75c000, opts=0x2f)
at line.c:255#3 0xa0126971 in open_console (tty=0x2f) at stdio_console.c:135 #4 0xa00efb07 in tty_open (inode=0xaa60d9e0, filp=0xaa380e20) at tty_io.c:1437 (gdb)
bre
So, somehow the generic tty_open stuff is giving strange behaviour. Any ideas what's going on?
Chris
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