Re: Why does printf(9) hang network?

Robert writes: Why would doing a printf(9) in a device driver (usb, firewire, probably others) cause an obscenely long lockout on /usr/src/sys/kern/uipc_sockbuf.c:148 (sx:so_rcv_sx) ? Printf(9) alone isn't the problem, adding printfs to chown(2) does not cause the problem, but printfs

witness Re: Why does printf(9) hang network?

I received a suggestion to try witness, so I build a kernel with WITNESS, WITNESS_KDB, KDB, DDB, KDB_TRACE, and DDB_NUMSYM. This is my first attempt to use witness, so if I got something wrong let me know. Didn't quite make it all the way up to a multiuser prompt: Starting syslogd. Starting

Why does printf(9) hang network?

Why would doing a printf(9) in a device driver (usb, firewire, probably others) cause an obscenely long lockout on /usr/src/sys/kern/uipc_sockbuf.c:148 (sx:so_rcv_sx) ? Printf(9) alone isn't the problem, adding printfs to chown(2) does not cause the problem, but printfs from device drivers do.

Re: Why does printf(9) hang network?

On Sat, 5 Feb 2011, dieter...@engineer.com wrote: Why would doing a printf(9) in a device driver (usb, firewire, probably others) cause an obscenely long lockout on /usr/src/sys/kern/uipc_sockbuf.c:148 (sx:so_rcv_sx) ? Printf(9) alone isn't the problem, adding printfs to chown(2) does not