linaro-android July 2018

linaro-android@lists.linaro.org

5 participants
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Please help to give suggestions on finding the real error code returning place in kernel?

by Yongqin Liu

Hi, Sumit, John, Amit, All I am investigating on the VtsKernelNetTest failure with HiKey 4.4 kernel, and I found the problem is that the socket.connect call returns -11, with adding printk lines in the SYSCALL_DEFINE3 of connect in socket.c file, I found that the error is returned by the line of "err = sock->ops->connect(sock, (struct sockaddr *)&address, addrlen,sock->file->f_flags);" https://android.googlesource.com/kernel/hikey-linaro/+/android-hikey-linaro… There actually I don't know which connect function is called, so I searched the .connect assignment in kernel/linaro/hisilicon-4.4/net/ipv4/ and with adding printk lines, I found the implementation is tcp_v4_connect in net/ipv4/tcp_ipv4.c here: https://android.googlesource.com/kernel/hikey-linaro/+/android-hikey-linaro… There with adding printk lines, I found it the -11 is returned by call of ip_route_connect here: https://android.googlesource.com/kernel/hikey-linaro/+/android-hikey-linaro… Then I need to go to the definition of ip_route_connect to add printks and so on to find the real place where -11 is return, and check the reason there. but this work seems stupid and time consuming, I think there should be smart methods I need to learn. Could you please help go give some suggestion on what to do with such cases? Thanks in advance! -- Best Regards, Yongqin Liu --------------------------------------------------------------- #mailing list linaro-android(a)lists.linaro.org <linaro-dev(a)lists.linaro.org> http://lists.linaro.org/mailman/listinfo/linaro-android

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linaro-android July 2018