Re: netlink: GPF in sock_sndtimeo

On Fri, Dec 9, 2016 at 12:48 PM, Richard Guy Briggs <rgb(a)redhat.com&gt; wrote: > On 2016-12-09 11:49, Dmitry Vyukov wrote: >> On Fri, Dec 9, 2016 at 7:02 AM, Richard Guy Briggs <rgb(a)redhat.com&gt; wrote: >> > On 2016-11-29 23:52, Richard Guy Briggs wrote: >> > I tried a quick compile attempt on the test case (I assume it is a >> > socket fuzzer) and get the following compile error: >> > cc -g -O0 -Wall -D_GNU_SOURCE -o socket_fuzz socket_fuzz.c >> > socket_fuzz.c:16:1: warning: "_GNU_SOURCE" redefined >> > <command-line>: warning: this is the location of the previous definition >> > socket_fuzz.c: In function ‘segv_handler’: >> > socket_fuzz.c:89: warning: implicit declaration of function ‘__atomic_load_n’ >> > socket_fuzz.c:89: error: ‘__ATOMIC_RELAXED’ undeclared (first use in this function) >> > socket_fuzz.c:89: error: (Each undeclared identifier is reported only once >> > socket_fuzz.c:89: error: for each function it appears in.) >> > socket_fuzz.c: In function ‘loop’: >> > socket_fuzz.c:280: warning: unused variable ‘errno0’ >> > socket_fuzz.c: In function ‘test’: >> > socket_fuzz.c:303: warning: implicit declaration of function ‘__atomic_fetch_add’ >> > socket_fuzz.c:303: error: ‘__ATOMIC_SEQ_CST’ undeclared (first use in this function) >> > socket_fuzz.c:303: warning: implicit declaration of function ‘__atomic_fetch_sub’ >> >> -std=gnu99 should help >> ignore warnings > > I got a little further, left with "__ATOMIC_RELAXED undeclared", "__ATOMIC_SEQ_CST > undeclared" under gcc 4.4.7-16. > > gcc 4.8.2-15 leaves me with "undefined reference to `clock_gettime'" add -lrt

> What compiler version do you recommend? 6.x sounds reasonable 4.4 branch is 7.5 years old, surprised that it does not disintegrate into dust yet :)

>> >> - RGB >> > >> > - RGB > > - RGB > > -- > Richard Guy Briggs <rgb(a)redhat.com&gt; > Kernel Security Engineering, Base Operating Systems, Red Hat > Remote, Ottawa, Canada > Voice: +1.647.777.2635, Internal: (81) 32635