Hi, sorry for the late reply. On 04/03/2017 07:29 PM, Cong Wang wrote: > (Cc'ing netdev and maintainers) > > On Mon, Mar 27, 2017 at 2:16 AM, David Palma <david.palma@xxxxxxx> wrote: >> >> Hi, >> >> Sending a simple UDP packet (39 bytes long), over a 6lowpan interface >> (using fakelb), creates a kernel panic (skb_over_panic). >> >> Steps to reproduce, and more details, can be found in: >> https://github.com/PalmaITEM/6lowpan-skb_over_panic >> >> This bug has been reported in >> https://bugzilla.kernel.org/show_bug.cgi?id=195059 >> >> I have found that lengths around 39 bytes can also trigger this >> behaviour and that longer packets are handled without problem. >> >> Verified in: >> >> - Linux version 4.9.0-0.bpo.2-amd64 (debian-kernel@xxxxxxxxxxxxxxxx) >> (gcc version 4.9.2 (Debian 4.9.2-10) ) #1 SMP Debian 4.9.13-1~bpo8+1 >> (2017-02-27) >> - Linux version 4.10.4-1-ARCH (builduser@tobias) (gcc version 6.3.1 >> 20170306 (GCC) ) #1 SMP PREEMPT Sat Mar 18 19:39:18 CET 2017 >> >> >> I am not familiar with the process of reporting kernel bugs, so >> apologies beforehand. I am also available to provide any missing >> information. >> I will try to reproduce the failure with an x86_64 qemu virtual machine. Myself I use a 32 Bit qemu machine because I have a dependency on userspace software which use x86 assembler (somebody should change it to setjmp/longjmp)... it's the RIOT-OS native plattform. I use some cross compiling environment which doesn't support multilib yet, so I used always 32 Bit. btw: the github stuff is very useful and thanks for the hard work! I am on it to reproduce it. I will report when I have more information. - Alex -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
