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charset="Windows-1252" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Sep 2021 22:37:58 -0000 I=92m observing abort in GDB 9.2.1 version, and same issue is present in gi= t://sourceware.org/git/binutils-gdb.git tip. The full call trace is shown at the end of this message. In frame 7, call to FD_SET is causing buffer overflow when commands from a= GDB macro file are processed. (gdb) frame 7 #7 0x000000000076978b in gdb_readline_no_editing (prompt=3D= ) at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/top.c:850 850 FD_SET (fd, &readfds); (gdb) p fd $1 =3D 1533 GDB is processing split dwarf =93.dwp=94 file for the main executable and = processing some =93.dwo=94 files in the workspace, which may have something= to do with it. GDB is opening a bunch of .debug files , one each for ever= y library and the open file descriptors go past 1024. This results in = buffer overflow when gdb.macros file is opened and processed in frame 7 ( f= ile descriptor 1533). The bfd file descriptor caching code which tries to limit no of open descri= ptors is not effective in this case. Does this explanation make sense? Any ideas to fix this issue are greatly = appreciated. Full backtrace leading up to abort: (gdb) bt #0 0x00007f6e8b4aa7ff in raise () from /lib64/libc.so.6 #1 0x00007f6e8b494c35 in abort () from /lib64/libc.so.6 #2 0x00007f6e8b4ed987 in __libc_message () from /lib64/libc.so.6 #3 0x00007f6e8b580935 in __fortify_fail_abort () from /lib64/libc.so.6 #4 0x00007f6e8b580967 in __fortify_fail () from /lib64/libc.so.6 #5 0x00007f6e8b57e926 in __chk_fail () from /lib64/libc.so.6 #6 0x00007f6e8b58085b in __fdelt_warn () from /lib64/libc.so.6 #7 0x000000000076978b in gdb_readline_no_editing (prompt=3D= ) at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/top.c:850 #8 command_line_input [_Z18command_line_inp...] (prompt_arg=3D, annotation_suffix=3D0xa2c00a "") at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/top.c:1336 #9 0x0000000000769b22 in read_command_file [_Z17read_command_fil...] (stre= am=3Dstream@entry=3D0x63b3d360) at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/top.c:455 #10 0x00000000004d912d in script_from_file [_Z16script_from_file...] (strea= m=3Dstream@entry=3D0x63b3d360, file=3Dfile@entry=3D0x2b78337 "/tmp/gdb.macros") at /auto/swtools/prod-= builds/src/gdb-9.2.1/gdb/gdb/cli/cli-script.c:1622 #11 0x00000000004ce37b in source_script_from_stream (file_to_open=3D0x2b783= 37 =93/tmp/gdb.macros", file=3D0x2b78337 "/tmp/gdb.macros", stream=3D0x63b3d360) at /auto/swtoo= ls/prod-builds/src/gdb-9.2.1/gdb/gdb/cli/cli-cmds.c:660 #12 source_script_with_search [_ZL25source_script_w...] (file=3D0x2b78337 "= /tmp/gdb.macros", from_tty=3D, search_path=3D) at /auto/swtools/prod-builds/src/gdb-9.2= .1/gdb/gdb/cli/cli-cmds.c:696 #13 0x00000000004ce4d8 in source_command [_ZL14source_commandP...] (args=3D= , from_tty=3D0) at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/cli/cli-cmds.c:755 #14 0x00000000004d1652 in cmd_func [_Z8cmd_funcP16cmd_li...] (cmd=3D, args=3D, from_tty=3D) at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/cli/cli-decode.c:195= 2 #15 0x0000000000768dea in execute_command [_Z15execute_commandP...] (p=3D, p@entry=3D0x2b78330 "source /tmp/gdb.macros", from_tty=3D0) at /auto/sw= tools/prod-builds/src/gdb-9.2.1/gdb/gdb/top.c:666 #16 0x000000000056784c in command_handler [_Z15command_handlerP...] (comman= d=3D0x2b78330 "source /tmp/gdb.macros") at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/event-top.c:587 #17 0x0000000000769b2f in read_command_file [_Z17read_command_fil...] (stre= am=3Dstream@entry=3D0x2af4a30) at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/top.c:458 #18 0x00000000004d912d in script_from_file [_Z16script_from_file...] (strea= m=3Dstream@entry=3D0x2af4a30, file=3Dfile@entry=3D0x7fffeccca944 "/ws/asowda-sjc/tmp/gdbinit") at /au= to/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/cli/cli-script.c:1622 #19 0x00000000004ce37b in source_script_from_stream (file_to_open=3D0x7fffe= ccca944 "/ws/asowda-sjc/tmp/gdbinit", file=3D0x7fffeccca944 "/ws/asowda-sjc/tmp/gdbinit", stream=3D0x2af4a30)= at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/cli/cli-cmds.c:660 #20 source_script_with_search [_ZL25source_script_w...] (file=3D0x7fffeccca= 944 "/ws/asowda-sjc/tmp/gdbinit", file@entry=3D, fr= om_tty=3D, search_path=3D) a= t /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/cli/cli-cmds.c:696 #21 0x00000000006042fe in catch_command_errors [_ZL20catch_command_e...] (c= ommand=3D, arg=3D, from_tty=3D= ) at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/main.c:400 #22 0x0000000000605555 in captured_main_1 [_ZL15captured_main_1...] (contex= t=3D) at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/main.c:1163 #23 0x0000000000605c5b in captured_main (data=3Ddata@entry=3D0x7fffeccc9dc0= ) at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/main.c:1217 #24 gdb_main [_Z8gdb_mainP18captur...] (args=3Dargs@entry=3D0x7fffeccc9de0)= at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/main.c:1217 #25 0x000000000042a4d5 in main (argc=3D, argv=3D) at /auto/swtools/prod-builds/src/gdb-9.2.1/gdb/gdb/gdb.c:32