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aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gnu.org header.s=fencepost-gnu-org header.b=XpEqhvYx; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -3.76 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gnu.org header.s=fencepost-gnu-org header.b=XpEqhvYx; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 9D658A246 X-Spam-Score: -3.76 X-Migadu-Scanner: scn1.migadu.com X-TUID: lyEdEaOWKFuq Hello, > [pid 74060] --- SIGPIPE {si_signo=SIGPIPE, si_code=SI_USER, si_pid=74060, si_uid=997} --- > > The evaluation process receives a SIGPIPE when trying to write the > evaluation result to the pipe connecting it to "cuirass register". I think this is a wrong lead. The cuirass evaluation process looks like: --- pipe B ---> inferior I1 "cuirass register" <--- pipe A ---> "cuirass evaluate" <--| --- pipe C ---> inferior I2 In short, "cuirass register" is a daemon monitoring Git repositories and triggering sporadic "cuirass evaluate" processes. Those processes use inferiors to evaluate the new derivations. The SIGPIPE observed with strace doesn't correspond to pipe A but to pipe B or C. The issue here is probably that "cuirass evaluate" dies unexpectedly which causes the inferior I1 or I2 to receive a SIGPIPE when writing to a pipe which is not listened to anymore. Stracing the "cuirass evaluate" process shows indeed that it dies unexpectedly by receiving a SIGABRT signal. --8<---------------cut here---------------start------------->8--- rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0 pselect6(242, [3 227 241], [], [], NULL, NULL ) = ? +++ killed by SIGABRT +++ --8<---------------cut here---------------end--------------->8--- I tried to use gdb to get more details: --8<---------------cut here---------------start------------->8--- Thread 28 "guile" received signal SIGABRT, Aborted. [Switching to LWP 113115] 0x00007f890b618030 in raise () from /gnu/store/5h2w4qi9hk1qzzgi1w83220ydslinr4s-glibc-2.33/lib/libc.so.6 (gdb) bt #0 0x00007f890b618030 in raise () from /gnu/store/5h2w4qi9hk1qzzgi1w83220ydslinr4s-glibc-2.33/lib/libc.so.6 #1 0x00007f890b602526 in abort () from /gnu/store/5h2w4qi9hk1qzzgi1w83220ydslinr4s-glibc-2.33/lib/libc.so.6 #2 0x00007f890bb94198 in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #3 0x00007f890bc38728 in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #4 0x00007f88dcce625f in ?? () #5 0x00007f8903a5eacc in ?? () #6 0x00007f88e31eb8a0 in ?? () #7 0x0000000000000006 in ?? () #8 0x00007f890bbd6ccc in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #9 0x00007f890bc2bf3c in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #10 0x00007f890bc395e9 in scm_call_n () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #11 0x00007f890bb9da0e in scm_call_with_unblocked_asyncs () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #12 0x00007f890bc2c336 in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #13 0x00007f890bc395e9 in scm_call_n () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #14 0x00007f890bc28be6 in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #15 0x00007f890bb9f85a in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #16 0x00007f88dcc8e482 in ?? () #17 0x00007f8903a5e7e0 in ?? () #18 0x00007f8901d4be30 in ?? () #19 0x0000000000000048 in ?? () #20 0x00007f890bbd6ccc in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #21 0x00007f890bc2bf3c in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #22 0x00007f890bc395e9 in scm_call_n () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #23 0x00007f890bba109a in scm_call_2 () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #24 0x00007f890bc57752 in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #25 0x00007f890bc2988f in scm_c_catch () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #26 0x00007f890bba1e66 in scm_c_with_continuation_barrier () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #27 0x00007f890bc28b39 in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #28 0x00007f890baff0ba in GC_call_with_stack_base () from /gnu/store/2lczkxbdbzh4gk7wh91bzrqrk7h5g1dl-libgc-8.0.4/lib/libgc.so.1 #29 0x00007f890bc2116d in ?? () from /gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/lib/libguile-3.0.so.1 #30 0x00007f890bad5d7e in ?? () from /gnu/store/5h2w4qi9hk1qzzgi1w83220ydslinr4s-glibc-2.33/lib/libpthread.so.0 #31 0x00007f890b6d3eff in clone () from /gnu/store/5h2w4qi9hk1qzzgi1w83220ydslinr4s-glibc-2.33/lib/libc.so.6 --8<---------------cut here---------------end--------------->8--- but the backtrace doesn't help much. I can try to use Guile with symbols to have a more detailed backtrace. Anyone knows what could cause Guile to receive a SIGABRT signal? Thanks, Mathieu