Dear Cafe, I keep getting spurious segfaults from a dynamically linked executable compiled by ghc. In dmesg: [402186.145258] pure-matchbox:w[25362]: segfault at 7f98644a5c00 ip 00000000017ab65e sp 00007f98377f9988 error 4 [402186.145262] Code: b8 0a 7e 77 01 48 83 ec 08 48 89 df 48 89 c3 31 c0 ff d3 48 83 c4 08 48 8b 1c 25 50 90 a7 01 48 89 c1 48 6b c9 18 48 83 c1 10 <48> 83 3c 0b 00 74 30 48 8b 1c 25 50 90 a7 01 48 6b c0 18 48 83 c0 How can I find out what part of the program this refers to? The error might be related to external libraries (used by hmatrix-glpk) but I don't know how to verify this. When I look at the output of `nm´ for this executable, I am not seeing any address like 00017ab65e. I do not have a concrete reproducible test case, but the bug happens statistically (say, in one out of 1000 runs). - J.