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I need to write a kernel module for a Linux system as shown below.

# uname -a Linux (none) 3.7.1 #1 SMP Mon Dec 23 06:07:19 PST 2013 i686 GNU/Linux # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 6 model name : QEMU Virtual CPU version 2.5+ stepping : 3 cpu MHz : 2793.012 cache size : 4096 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic sep pge cmov mmx fxsr sse sse2 pni hypervisor bogomips : 5586.02 clflush size : 32 cache_alignment : 32 address sizes : 36 bits physical, 32 bits virtual power management:

The Linux box doesn't have kernel headers or the build system (gcc/ld) installed. Hence I need to set it up locally on my system. How can I find the kernel headers for this particular system? The linux kernel on github has only the releases below, none of which matches exactly with the version (v3.7.1) of kernel installed there.

$ git tag | grep v3.7 v3.7 v3.7-rc1 v3.7-rc2 v3.7-rc3 v3.7-rc4 v3.7-rc5 v3.7-rc6 v3.7-rc7 v3.7-rc8
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    Actually you need to know who provided the kernel. But if you don't care, this is good enough. Likewise, this may help. Commented Jun 15, 2018 at 0:08
  • The module needs to be written to solve a challenge. I guess I have no other means to know any more info. What I can conclude is it is running some sort of custom 32 bit kernel, tagged as v3.7.1, inside Qemu emulator. Commented Jun 15, 2018 at 0:31

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The archived sources are at kernel.org and are available as compressed tarballs and patchsets in the CDN repository. For version 3.7.1, the following tarballs are available:

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