2011/12/4 <[email protected]>: > Hi! > > On 21:56 Sat 03 Dec , onlyfever wrote: >> Hi, >> I have a question about work queue. >> I use queue_work() function in my TTY driver's write function >> (ch_tty_write()). >> The TTY driver works fine,but when this driver is called from >> ppp_write() function system would crash. >> >> static int ch_tty_write(struct tty_struct *tty, >> const unsigned char *buf, int count) >> { >> ...... >> queue_work(xxx,xxxx); >> return count; >> } >> >> I want to know which context can't use queue_work() function? >> Put the crash message below. >> >> Unable to handle kernel NULL pointer dereference at virtual address 00000003 > > Please check that you have properly called "INIT_WORK" and do pass any null > pointers to either INIT_WORK or queue_work. If this does not help, please > give us a pointer on where to get your kernel tree. > > -Michi > -- > programing a layer 3+4 network protocol for mesh networks > see http://michaelblizek.twilightparadox.com
I find the reason,the work queue has been destroyed before the work been called. thanks. Regards! _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
