Hello, Building 3.0.0 with Guix on ARMv7 reproducibly fails:
--8<---------------cut here---------------start------------->8--- BOOTSTRAP GUILEC language/cps/loop-instrumentation.go wrote `language/cps/loop-instrumentation.go' BOOTSTRAP GUILEC language/cps/peel-loops.go wrote `language/cps/effects-analysis.go' BOOTSTRAP GUILEC language/cps/prune-top-level-scopes.go wrote `language/cps/licm.go' BOOTSTRAP GUILEC language/cps/reify-primitives.go wrote `language/cps/prune-top-level-scopes.go' BOOTSTRAP GUILEC language/cps/renumber.go wrote `language/cps/peel-loops.go' BOOTSTRAP GUILEC language/cps/rotate-loops.go wrote `language/cps/reify-primitives.go' BOOTSTRAP GUILEC language/cps/optimize.go wrote `language/cps/renumber.go' BOOTSTRAP GUILEC language/cps/simplify.go wrote `language/cps/rotate-loops.go' BOOTSTRAP GUILEC language/cps/self-references.go wrote `language/cps/optimize.go' BOOTSTRAP GUILEC language/cps/slot-allocation.go wrote `language/cps/self-references.go' BOOTSTRAP GUILEC language/cps/spec.go wrote `language/cps/simplify.go' BOOTSTRAP GUILEC language/cps/specialize-primcalls.go wrote `language/cps/spec.go' BOOTSTRAP GUILEC language/cps/specialize-numbers.go /gnu/store/nvkn00kq4x4g5wjjjvjj6rhzs0ihihxl-bash-minimal-5.0.7/bin/bash: line 6: 23019 Segmentation fault (core dumped) GUILE_AUTO_COMPILE=0 ../meta/build-env guild compile --target="arm-unknown-linux-gnueabihf" -O1 -Oresolve-primitives -L "/tmp/guix-build-guile-next-3.0.0.drv-0/guile-3.0.0/module" -L "/tmp/guix-build-guile-next-3.0.0.drv-0/guile-3.0.0/guile-readline" -o "language/cps/specialize-primcalls.go" "../module/language/cps/specialize-primcalls.scm" make[2]: *** [Makefile:1931: language/cps/specialize-primcalls.go] Error 139 make[2]: *** Waiting for unfinished jobs.... wrote `language/cps/slot-allocation.go' wrote `language/cps/specialize-numbers.go' make[2]: Leaving directory '/tmp/guix-build-guile-next-3.0.0.drv-0/guile-3.0.0/bootstrap' make[1]: *** [Makefile:1849: all-recursive] Error 1 --8<---------------cut here---------------end--------------->8--- It seems to always happen while building ‘specialize-primcalls.go’. (See <https://ci.guix.gnu.org/log/8b8c0hxvm9qa5kff168vdr3943cc2s61-guile-next-3.0.0>.) The backtrace is unfortunately not all that readable: --8<---------------cut here---------------start------------->8--- Program terminated with signal SIGSEGV, Segmentation fault. #0 0xf5c67b74 in ?? () [Current thread is 1 (Thread 0xf7fe8010 (LWP 23019))] (gdb) bt #0 0xf5c67b74 in ?? () #1 0xf7f3ffcc in scm_jit_enter_mcode (thread=0xdedc20, mcode=0xf5c67a00 " 8\r\032(-@\360c\203%i\250B\300\362_\203\240`\245m") at jit.c:5725 #2 0xf7093a40 in ?? () Backtrace stopped: previous frame identical to this frame (corrupt stack?) (gdb) info threads Id Target Id Frame * 1 Thread 0xf7fe8010 (LWP 23019) 0xf5c67b74 in ?? () 2 Thread 0xf7894460 (LWP 23042) 0xf7e8f034 in __libc_do_syscall () from /gnu/store/n7c20pjm6q1xq1gqjqzzys1yk9fy7n1k-glibc-2.29/lib/libpthread.so.0 3 Thread 0xf69a5460 (LWP 23045) 0xf7e8f034 in __libc_do_syscall () from /gnu/store/n7c20pjm6q1xq1gqjqzzys1yk9fy7n1k-glibc-2.29/lib/libpthread.so.0 (gdb) frame 0 #0 0xf5c67b74 in ?? () (gdb) disassemble 0xf5c67a00,+500 Dump of assembler code from 0xf5c67a00 to 0xf5c67bf4: 0xf5c67a00: subs r0, #32 0xf5c67a02: subs r5, r1, r0 0xf5c67a04: cmp r5, #40 ; 0x28 0xf5c67a06: bne.w 0xf5c680d0 0xf5c67a0a: ldr r5, [r4, #16] 0xf5c67a0c: cmp r0, r5 0xf5c67a0e: blt.w 0xf5c680d0 0xf5c67a12: str r0, [r4, #8] 0xf5c67a14: ldr r5, [r4, #88] ; 0x58 0xf5c67a16: cmp r5, #0 0xf5c67a18: beq.w 0xf5c68102 0xf5c67a1c: ldrt r6, [r5] 0xf5c67a20: str r6, [r4, #88] ; 0x58 0xf5c67a22: str r5, [r0, #24] 0xf5c67a24: movw r5, #1293 ; 0x50d 0xf5c67a28: movs r6, #0 0xf5c67a2a: str r5, [r0, #16] 0xf5c67a2c: str r6, [r0, #20] 0xf5c67a2e: ldr r5, [r0, #24] 0xf5c67a30: ldr r6, [r0, #16] 0xf5c67a32: str r6, [r5, #0] 0xf5c67a34: ldr r5, [r0, #32] 0xf5c67a36: ldr r5, [r5, #4] 0xf5c67a38: str r5, [r0, #16] […] 0xf5c67b5e: cmp r5, #0 0xf5c67b60: ble.w 0xf5c67fce 0xf5c67b64: ldr r5, [r0, #32] 0xf5c67b66: ldr r5, [r5, #20] 0xf5c67b68: str r5, [r0, #16] 0xf5c67b6a: ldr r5, [r0, #16] 0xf5c67b6c: ldr r5, [r5, #4] 0xf5c67b6e: str r5, [r0, #16] 0xf5c67b70: mov.w r12, #0 => 0xf5c67b74: ldrt r5, [r12] 0xf5c67b78: str r5, [r0, #8] 0xf5c67b7a: ldr r5, [r0, #8] 0xf5c67b7c: ldr r6, [r0, #16] 0xf5c67b7e: cmp r5, r6 0xf5c67b80: bne.w 0xf5c67f80 […] (gdb) info registers r0 0xf7093a20 4144577056 r1 0xf7093a48 4144577096 r2 0x0 0 r3 0xf7a24001 4154605569 r4 0x74e00 478720 r5 0xdedc20 14605344 r6 0x0 0 r7 0xf5c67a00 4123425280 r8 0x0 0 r9 0x0 0 r10 0xf7fc4bdc 4160506844 r11 0xf7fb5000 4160442368 r12 0x0 0 sp 0xfffedc50 0xfffedc50 lr 0xf7f3ffcd -135004211 pc 0xf5c67b74 0xf5c67b74 cpsr 0x200f0030 537854000 fpscr 0x60000000 1610612736 (gdb) frame 1 #1 0xf7f3ffcc in scm_jit_enter_mcode (thread=0xdedc20, mcode=0xf5c67a00 " 8\r\032(-@\360c\203%i\250B\300\362_\203\240`\245m") at jit.c:5725 5725 enter_mcode (thread, mcode); (gdb) info locals No locals. (gdb) p *thread $2 = {next_thread = 0x5, vm = {ip = 0xdecd50, sp = 0x324602ae, fp = 0xdebc50, stack_limit = 0x30d, compare_result = 72 'H', apply_hook_enabled = 130 '\202', return_hook_enabled = 82 'R', next_hook_enabled = 1 '\001', abort_hook_enabled = 192 '\300', disable_mcode = 159 '\237', engine = 166 '\246', unused = 1 '\001', stack_size = 15218, stack_bottom = 0x20d, apply_hook = 0x1528240, return_hook = 0x1a69fc0, next_hook = 0x0, abort_hook = 0x5, stack_top = 0xdecd68, overflow_handler_stack = 0x28f45b3e, registers = 0xdebc58, mra_after_abort = 0x20045 "", trace_level = -140048256}, pending_asyncs = 0x116ab78, block_asyncs = 22184512, freelists = {0x20045, 0xf7a707ec, 0x1162bf8, 0x1528248, 0x5, 0x248360, 0x30999e00, 0xdebc60, 0x20d, 0x1528250, 0x1a69fc0, 0x0, 0x20045, 0xf7a70880, 0x1167440, 0x1528250, 0x5, 0xdecd80, 0x181aface, 0xdebc68, 0x20d, 0x1528258, 0x1a69fc0, 0x0, 0x20045, 0xf7a70880, 0x1167460, 0x1528258, 0x5, 0x248370, 0x91c2f1f, 0xdebc70}, pointerless_freelists = {0x30d, 0x7f1720, 0x1a69fc0, 0x1496, 0x30d, 0xdedd50, 0x96, 0x16, 0x5, 0x789740, 0x3275b29e, 0xdebc78, 0x30d, 0xdedd50, 0x16, 0x3fffffe, 0x30d, 0xdedd50, 0x96, 0x3fe, 0x5, 0xdecd98, 0x3afba8fc, 0xdebc80, 0x30d, 0x7f1720, 0x96, 0x16, 0x20d, 0x1528260, 0x1a69fc0, 0x0}, handle = 0x5, pthread = 14601648, result = 0x38a97220, exited = 14597256, guile_mode = 131141, needs_unregister = -140048256, wake = 0x1162128, sleep_cond = {__data = {{__wseq = 95281925316411917, __wseq32 = {__low = 525, __high = 22184552}}, {__g1_start = 27697088, __g1_start32 = {__low = 27697088, __high = 0}}, __g_refs = {5, 7903072}, __g_size = {67881032, 14597264}, __g1_orig_size = 131141, __wrefs = 4154919040, __g_signals = { 18228776, 22184552}}, __size = "\r\002\000\000h\202R\001\300\237\246\001\000\000\000\000\005\000\000\000`\227x\000H\310\v\004\220\274\336\000E\000\002\000\200\b\247\367(&\026\001h\202R\001", __align = 95281925316411917}, sleep_pipe = {525, 22184560}, dynamic_state = 0xa, dynstack = {base = 0x0, top = 0x5, limit = 0x789780}, continuation_root = 0x2db7da0c, continuation_base = 0xdebc98, base = 0x20d, jit_state = 0xdede20} --8<---------------cut here---------------end--------------->8--- Unfortunately I’m unable to reproduce the bug outside Guix’s build environment, even with ASLR disabled (what guix-daemon does). I wonder if that could be the same issue as <https://issues.guix.gnu.org/issue/39118>. I’ll happily take suggestions as to what debug info would be useful and what I could bisect! Ludo’.
