I've recently been experiencing some packages failing to emerge due to some processes hanging. In one such case I finally managed to get the following backtrace from a hanging lto1 process, which looks like a deadlock while trying to lock a mutex and seems to be involved to libsandbox recursively calling open() due to a call to abort(). (gdb) thread apply all bt Thread 1 (Thread 0x7f0067982ac0 (LWP 1048751) "lto1-wpa-stream"): #0 0x00007f0067a0a4ef in ?? () from target:/lib64/libc.so.6 #1 0x00007f0067a10962 in pthread_mutex_lock () from target:/lib64/libc.so.6 #2 0x00007f0068091c1d in ?? () from target:/usr/lib64/libsandbox.so #3 0x00007f0068095838 in open () from target:/usr/lib64/libsandbox.so #4 0x00000000028023c1 in backtrace_open () #5 0x000000000280207e in fileline_initialize () #6 0x000000000280221c in backtrace_pcinfo () #7 0x000000000280174b in unwind () #8 0x000000000285ce74 in _Unwind_Backtrace () #9 0x0000000002801849 in backtrace_full () #10 0x0000000002794df2 in diagnostic_action_after_output(diagnostic_context*, diagnostic_t) () #11 0x00000000027969e2 in diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*) () #12 0x0000000002797031 in diagnostic_impl(rich_location*, diagnostic_metadata const*, int, char const*, __va_list_tag (*) [1], diagnostic_t) () #13 0x0000000002798e80 in internal_error(char const*, ...) () #14 0x0000000001172781 in crash_signal(int) () #15 <signal handler called> #16 0x00007f0067a0f3ac in ?? () from target:/lib64/libc.so.6 #17 0x00007f00679bf8b6 in raise () from target:/lib64/libc.so.6 #18 0x00007f00679a97fc in abort () from target:/lib64/libc.so.6 #19 0x00007f00680994d3 in ?? () from target:/usr/lib64/libsandbox.so #20 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #21 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #22 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #23 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #24 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #25 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #26 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #27 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #28 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #29 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #30 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #31 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #32 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #33 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #34 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #35 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #36 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #37 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #38 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #39 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #40 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #41 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #42 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #43 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #44 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #45 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #46 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #47 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #48 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #49 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #50 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #51 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #52 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #53 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #54 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #55 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #56 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #57 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #58 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #59 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #60 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #61 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #62 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #63 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #64 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #65 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #66 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #67 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #68 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #69 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #70 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #71 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #72 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #73 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #74 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #75 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #76 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #77 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #78 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #79 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #80 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #81 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #82 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #83 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #84 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #85 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #86 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #87 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #88 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #89 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #90 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #91 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #92 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #93 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #94 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #95 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #96 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #97 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #98 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #99 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #100 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #101 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #102 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #103 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #104 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #105 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #106 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #107 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #108 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #109 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #110 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #111 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #112 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #113 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #114 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #115 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #116 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #117 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #118 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #119 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #120 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #121 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #122 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #123 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #124 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #125 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #126 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #127 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #128 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #129 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #130 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #131 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #132 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #133 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #134 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #135 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #136 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #137 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #138 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #139 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #140 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #141 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #142 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #143 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #144 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #145 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #146 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #147 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #148 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #149 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #150 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #151 0x00007f0068099899 in ?? () from target:/usr/lib64/libsandbox.so #152 0x00007f0068091a54 in ?? () from target:/usr/lib64/libsandbox.so #153 0x00007f00680993cd in ?? () from target:/usr/lib64/libsandbox.so #154 0x00007f00680994c9 in ?? () from target:/usr/lib64/libsandbox.so #155 0x00007f006809a277 in ?? () from target:/usr/lib64/libsandbox.so #156 0x00007f0068091501 in ?? () from target:/usr/lib64/libsandbox.so #157 0x00007f0068091c48 in ?? () from target:/usr/lib64/libsandbox.so #158 0x00007f0068095838 in open () from target:/usr/lib64/libsandbox.so #159 0x0000000000a7545c in lto_read_section_data(lto_file_decl_data*, long, unsigned long) () #160 0x0000000000a75604 in get_section_data(lto_file_decl_data*, lto_section_type, char const*, int, unsigned long*) () #161 0x0000000000f61672 in lto_get_raw_section_data(lto_file_decl_data*, lto_section_type, char const*, int, unsigned long*) () #162 0x0000000000f5bf50 in copy_function_or_variable(symtab_node*) () #163 0x0000000000f5cb03 in lto_output() () #164 0x000000000102a277 in write_lto() () #165 0x000000000102a96b in ipa_write_optimization_summaries(lto_symtab_encoder_d*) () #166 0x0000000000a56178 in stream_out(char*, lto_symtab_encoder_d*, int) () #167 0x0000000000a5631d in stream_out_partitions_1(char*, int, int, int) () #168 0x0000000000a563f5 in stream_out_partitions(char*, int, int, int, bool) () #169 0x0000000000a56a97 in lto_wpa_write_files() () #170 0x0000000000a56fec in do_whole_program_analysis() () #171 0x0000000000a570fb in lto_main() () #172 0x0000000001172aa9 in compile_file() () #173 0x0000000001175ad9 in do_compile(bool) () #174 0x0000000001175ec3 in toplev::main(int, char**) () #175 0x00000000027707eb in main () I re-compiled sys-apps/sandbox with -ggdb and can hopefully post a better backtrace should this happen again, but perhaps the above backtrace might also be sufficient.
Note that there's two bugs here - the other bug being that GCC is ICEing. If you can reproduce that part, please file another bug (and follow https://wiki.gentoo.org/wiki/Gcc-ICE-reporting-guide). Although I'm a bit worried it's the "standard" LTO ICE, see https://bugs.gentoo.org/900519#c6.
It doesn't look like an GCC ICE, but caused by libsandbox only (and perhaps related to running low on available memory). Here's an updated backtrace: #0 0x00007f7c786f24ef in ?? () from target:/lib64/libc.so.6 #1 0x00007f7c786f8962 in pthread_mutex_lock () from target:/lib64/libc.so.6 #2 0x00007f7c78d7b0a0 in sb_lock () at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/lock.c:16 #3 0x00007f7c78d79c1d in before_syscall (dirfd=dirfd@entry=-100, sb_nr=-3, func=func@entry=0x7f7c78d8440e "open_rd", file=file@entry=0x22a5c73 "/proc/self/exe", flags=flags@entry=524288) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/libsandbox.c:1057 #4 0x00007f7c78d7a508 in before_syscall_open_int (dirfd=dirfd@entry=-100, sb_nr=<optimized out>, sb_nr@entry=5, func=func@entry=0x7f7c78d84eb2 "open", file=file@entry=0x22a5c73 "/proc/self/exe", flags=flags@entry=524288) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/libsandbox.c:1101 #5 0x00007f7c78d7d838 in open_DEFAULT (pathname=0x22a5c73 "/proc/self/exe", flags=524288) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/wrapper-funcs/__wrapper_simple.c:52 #6 0x000000000175ee9f in backtrace_open () #7 0x0000000001766ed9 in fileline_initialize () #8 0x00000000017670f6 in unwind () #9 0x0000000001bee244 in _Unwind_Backtrace (trace=0x1767030 <unwind>, trace_argument=0x7ffd52578bc0) at /var/tmp/portage/sys-devel/gcc-12.3.1_p20230526/work/gcc-12-20230526/libgcc/unwind.inc:309 #10 0x000000000175da2d in backtrace_full () #11 0x0000000001738551 in diagnostic_action_after_output(diagnostic_context*, diagnostic_t) () #12 0x000000000174121f in diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*) () #13 0x0000000001741a21 in diagnostic_impl(rich_location*, diagnostic_metadata const*, int, char const*, __va_list_tag (*) [1], diagnostic_t) () #14 0x0000000001726ed8 in internal_error(char const*, ...) () #15 0x0000000000b39c84 in crash_signal(int) () #16 <signal handler called> #17 0x00007f7c786f73ac in ?? () from target:/lib64/libc.so.6 #18 0x00007f7c786a78b6 in raise () from target:/lib64/libc.so.6 #19 0x00007f7c786917fc in abort () from target:/lib64/libc.so.6 #20 0x00007f7c78d814d3 in __sb_ebort (file=file@entry=0x7f7c78d85440 "/var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_write_fd.c", func=func@entry=0x7f7c78d854a0 <__func__.0> "sb_copy_file_to_fd", line_num=line_num@entry=22, format=format@entry=0x7f7c78d8570e "malloc(%zu)\n") at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_efuncs.c:138 #21 0x00007f7c78d82277 in __xmalloc (size=size@entry=4096, file=file@entry=0x7f7c78d85440 "/var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_write_fd.c", func=func@entry=0x7f7c78d854a0 <__func__.0> "sb_copy_file_to_fd", line=line@entry=22) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_memory.c:37 #22 0x00007f7c78d81899 in sb_copy_file_to_fd (file=file@entry=0x7f7c78d92340 <path> "/proc/142342/cmdline", ofd=ofd@entry=2) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_write_fd.c:22 #23 0x00007f7c78d79a54 in __sb_dump_backtrace () at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/libsandbox.c:425 #24 0x00007f7c78d813cd in sb_dump_backtrace () at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_efuncs.c:121 #25 0x00007f7c78d814c9 in __sb_ebort (file=file@entry=0x7f7c78d85440 "/var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_write_fd.c", func=func@entry=0x7f7c78d854a0 <__func__.0> "sb_copy_file_to_fd", line_num=line_num@entry=22, format=format@entry=0x7f7c78d8570e "malloc(%zu)\n") at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_efuncs.c:134 #26 0x00007f7c78d82277 in __xmalloc (size=size@entry=4096, file=file@entry=0x7f7c78d85440 "/var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_write_fd.c", func=func@entry=0x7f7c78d854a0 <__func__.0> "sb_copy_file_to_fd", line=line@entry=22) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_memory.c:37 #27 0x00007f7c78d81899 in sb_copy_file_to_fd (file=file@entry=0x7f7c78d92340 <path> "/proc/142342/cmdline", ofd=ofd@entry=2) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_write_fd.c:22 #28 0x00007f7c78d79a54 in __sb_dump_backtrace () at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/libsandbox.c:425 #29 0x00007f7c78d813cd in sb_dump_backtrace () at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_efuncs.c:121 #30 0x00007f7c78d814c9 in __sb_ebort (file=file@entry=0x7f7c78d85440 "/var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_write_fd.c", func=func@entry=0x7f7c78d854a0 <__func__.0> "sb_copy_file_to_fd", line_num=line_num@entry=22, format=format@entry=0x7f7c78d8570e "malloc(%zu)\n") at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_efuncs.c:134 #31 0x00007f7c78d82277 in __xmalloc (size=size@entry=4096, file=file@entry=0x7f7c78d85440 "/var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_write_fd.c", func=func@entry=0x7f7c78d854a0 <__func__.0> "sb_copy_file_to_fd", line=line@entry=22) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_memory.c:37 #32 0x00007f7c78d81899 in sb_copy_file_to_fd (file=file@entry=0x7f7c78d92340 <path> "/proc/142342/cmdline", ofd=ofd@entry=2) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_write_fd.c:22 #33 0x00007f7c78d79a54 in __sb_dump_backtrace () at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/libsandbox.c:425 #34 0x00007f7c78d813cd in sb_dump_backtrace () at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_efuncs.c:121 #35 0x00007f7c78d814c9 in __sb_ebort (file=file@entry=0x7f7c78d84030 "/var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/libsandbox.c", func=func@entry=0x7f7c78d844f8 <__func__.5> "resolve_path", line_num=line_num@entry=240, format=format@entry=0x7f7c78d8570e "malloc(%zu)\n") at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_efuncs.c:134 #36 0x00007f7c78d82277 in __xmalloc (size=size@entry=8192, file=file@entry=0x7f7c78d84030 "/var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/libsandbox.c", func=func@entry=0x7f7c78d844f8 <__func__.5> "resolve_path", line=line@entry=240) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsbutil/sb_memory.c:37 #37 0x00007f7c78d79501 in resolve_path (path=path@entry=0x1021e0b0 "/var/tmp/portage/sys-devel/gcc-12.3.1_p20230526/temp/ccQrIfmo.ltrans21.o", follow_link=follow_link@entry=0) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/libsandbox.c:240 #38 0x00007f7c78d79c48 in check_syscall (sbcontext=0x7f7c78d90080 <sbcontext>, flags=65, file=0x1021e0b0 "/var/tmp/portage/sys-devel/gcc-12.3.1_p20230526/temp/ccQrIfmo.ltrans21.o", func=0x7f7c78d84417 "open_wr", sb_nr=-4) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/libsandbox.c:894 #39 before_syscall (dirfd=dirfd@entry=-100, sb_nr=-4, func=func@entry=0x7f7c78d84417 "open_wr", file=file@entry=0x1021e0b0 "/var/tmp/portage/sys-devel/gcc-12.3.1_p20230526/temp/ccQrIfmo.ltrans21.o", flags=flags@entry=65) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/libsandbox.c:1069 #40 0x00007f7c78d7a508 in before_syscall_open_int (dirfd=dirfd@entry=-100, sb_nr=<optimized out>, sb_nr@entry=5, func=func@entry=0x7f7c78d84eb2 "open", file=file@entry=0x1021e0b0 "/var/tmp/portage/sys-devel/gcc-12.3.1_p20230526/temp/ccQrIfmo.ltrans21.o", flags=flags@entry=65) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/libsandbox.c:1101 #41 0x00007f7c78d7d838 in open_DEFAULT (pathname=0x1021e0b0 "/var/tmp/portage/sys-devel/gcc-12.3.1_p20230526/temp/ccQrIfmo.ltrans21.o", flags=65) at /var/tmp/portage/sys-apps/sandbox-2.29/work/sandbox-2.29/libsandbox/wrapper-funcs/__wrapper_simple.c:52 #42 0x000000000065939a in lto_obj_file_open(char const*, bool) () #43 0x00000000006617cf in stream_out_partitions_1(char*, int, int, int) () #44 0x0000000000662e7c in lto_main() () #45 0x0000000000b39e71 in compile_file() () #46 0x000000000062d29d in toplev::main(int, char**) () #47 0x000000000062dae4 in main () Some backtraces are longer than 200 frames with many recursions of __xmalloc -> __sb_ebort -> sb_dump_backtrace -> __sb_dump_backtrace -> sb_copy_file_to_fd -> __xmalloc -> ...
You can see it's ICEing because of: #14 0x0000000001726ed8 in internal_error(char const*, ...) () #15 0x0000000000b39c84 in crash_signal(int) ()
(In reply to Sam James from comment #3) > You can see it's ICEing because of: > #14 0x0000000001726ed8 in internal_error(char const*, ...) () > #15 0x0000000000b39c84 in crash_signal(int) () Yes, but afaict this happens due to abort() getting called in libsandbox.
(In reply to Sam James from comment #3) > You can see it's ICEing because of: > #14 0x0000000001726ed8 in internal_error(char const*, ...) () > #15 0x0000000000b39c84 in crash_signal(int) () .. but I see your point that __sb_dump_backtrace comes first. Still wondering what's happening with GCC though.
right, got it
