segmentation fault on alpine & docker about microsocks HOT 6 CLOSED

seems most likely related to thread stack size. the DNS resolver in musl 1.2.4 has some new code for TCP based DNS lookup, so maybe it requires more stack than previous versions.

try to change line 50 in socksrv.c from

#define THREAD_STACK_SIZE MAX(8*1024, PTHREAD_STACK_MIN)

to

#define THREAD_STACK_SIZE MAX(12*1024, PTHREAD_STACK_MIN)

from microsocks.

thanks for the quick response

12 didn't work but after incrementing it appears to start working at around 16

#define THREAD_STACK_SIZE MAX(16*1024, PTHREAD_STACK_MIN)

from microsocks.

cool. please notify me when you're reasonably sure that with 16kb there are no issues anymore (maybe test with some extremely long dns names).

from microsocks.

On 16kb
haven't been able to make it seg fault. even after successfully resolving hundreds of unique 253 character length domains at once with curl + parallel

from microsocks.

thanks, fixed in master.

from microsocks.

thank you !

from microsocks.