On Wed, Jun 7, 2017 at 4:43 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Wed, 7 Jun 2017, Andrey Konovalov wrote: > >> Hi, >> >> I've got the following error report while fuzzing the kernel with syzkaller. >> >> On commit b29794ec95c6856b316c2295904208bf11ffddd9 (4.12-rc4+). >> >> This looks quite similar to >> https://groups.google.com/forum/#!topic/syzkaller/HDawLBeeORI > > It does look very similar, but that problem was supposed to have been > fixed by commit 7b0173811260 ("usb: gadget: udc: core: fix return code > of usb_gadget_probe_driver()"). > >> I'm able to reproduce this, so I can collect some debug traces if needed. > > Can you provide an strace or the equivalent? Here's the syzkaller program (which is actually two programs executed consequently): https://gist.github.com/xairy/fe0a7531e00df5e8bc23e2e56e413510 Here's the strace log: https://gist.github.com/xairy/5fadc3b5d8b2b80c97e566538de08bc4 Unfortunately there's a lot of unrelated garbage, but I can't extract a simple C reproducer. I can also apply patches with debug printk's, run the reproducer and send you the result if that will help. > > Alan Stern > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
