| Summary: | gdb crashes in bfd_getl16 on debuginfo file | ||
|---|---|---|---|
| Product: | gdb | Reporter: | Arjan van de Ven <arjan> |
| Component: | gdb | Assignee: | Jan Kratochvil <jan> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | jan |
| Priority: | P2 | ||
| Version: | 7.5 | ||
| Target Milestone: | --- | ||
| Host: | Target: | ||
| Build: | Last reconfirmed: | ||
| Attachments: | the libc.so file that causes the crash | ||
(just to mention, I compressed the libc so file with XZ for size reasons) further investigation.. I can make the segfault go away if I use slightly different strip options on binaries. But that is likely only a workaround by avoiding the code that crashes [patch] Fix .debug_macro NOBITS crash (PR 14494) http://sourceware.org/ml/gdb-patches/2012-08/msg00513.html CVSROOT: /cvs/src Module name: src Branch: gdb_7_5-branch Changes by: jkratoch@sourceware.org 2012-08-27 16:42:55 Modified files: gdb : ChangeLog dwarf2read.c Log message: gdb/ PR gdb/14494. * dwarf2read.c (dwarf2_locate_sections): Move variable aflag here. Move the SEC_HAS_CONTENTS check here - for any NAMES use. (dwarf2_locate_sections) <eh_frame>: Move the variable and check from here. Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&only_with_tag=gdb_7_5-branch&r1=1.14469.2.27&r2=1.14469.2.28 http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/dwarf2read.c.diff?cvsroot=src&only_with_tag=gdb_7_5-branch&r1=1.687.2.1&r2=1.687.2.2 CVSROOT: /cvs/src Module name: src Changes by: jkratoch@sourceware.org 2012-08-27 16:43:27 Modified files: gdb : ChangeLog Log message: ChangeLog fix: PR gdb/14494. * dwarf2read.c (dwarf2_locate_sections): Move variable aflag here. Move the SEC_HAS_CONTENTS check here - for any NAMES use. (dwarf2_locate_sections) <eh_frame>: Move the variable and check from here. Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.14632&r2=1.14633 Checked in and also for 7.5.1. |
Created attachment 6590 [details] the libc.so file that causes the crash gdb -readnow /usr/lib/debug/lib64/libc-2.16.so.debug gives the following backtrace: #0 bfd_getl16 (p=0x7fd47abc965b) at libbfd.c:570 #1 0x000000000057333a in read_2_bytes (buf=0x7fd47abc965b <Address 0x7fd47abc965b out of bounds>, abfd=<optimized out>) at dwarf2read.c:13088 #2 dwarf_parse_macro_header (opcode_definitions=opcode_definitions@entry=0x7fff1d59ddf0, abfd=abfd@entry=0x26ed6c0, mac_ptr=0x7fd47abc965b <Address 0x7fd47abc965b out of bounds>, offset_size=offset_size@entry=0x7fff1d59dde8, section_is_gnu=section_is_gnu@entry=1) at dwarf2read.c:17156 #3 0x000000000057c1ac in dwarf_decode_macros (cu=cu@entry=0x27929b0, offset=5835, comp_dir=0x7fd47c59d368 <Address 0x7fd47c59d368 out of bounds>, section_is_gnu=section_is_gnu@entry=1) at dwarf2read.c:17509 #4 0x0000000000589a81 in read_file_scope (cu=<optimized out>, die=<optimized out>) at dwarf2read.c:7691 #5 process_die (die=<optimized out>, cu=cu@entry=0x27929b0) at dwarf2read.c:6872 #6 0x000000000058d7da in process_full_comp_unit (pretend_language=language_minimal, per_cu=0x2702790) at dwarf2read.c:6680 #7 process_queue () at dwarf2read.c:6250 #8 dw2_do_instantiate_symtab (per_cu=per_cu@entry=0x2702790) at dwarf2read.c:2177 #9 0x000000000058dd2c in dw2_instantiate_symtab (per_cu=0x2702790) at dwarf2read.c:2198 #10 0x000000000058e192 in dw2_expand_all_symtabs (objfile=<optimized out>) at dwarf2read.c:3136 #11 0x0000000000509996 in symbol_file_add_with_addrs_or_offsets (abfd=<optimized out>, add_flags=6, addrs=addrs@entry=0x0, flags=<optimized out>, flags@entry=0, parent=parent@entry=0x0, num_offsets=0, offsets=0x0) at symfile.c:1126 #12 0x0000000000509c4a in symbol_file_add_from_bfd (abfd=<optimized out>, add_flags=<optimized out>, addrs=addrs@entry=0x0, flags=flags@entry=0, parent=parent@entry=0x0) at symfile.c:1198 #13 0x0000000000509c91 in symbol_file_add (name=name@entry=0x7fff1d59fdaa "/usr/lib/debug/lib64/libc-2.16.so.debug", add_flags=<optimized out>, addrs=addrs@entry=0x0, flags=flags@entry=0) at symfile.c:1210 #14 0x000000000050a045 in symbol_file_add_main_1 (args=0x7fff1d59fdaa "/usr/lib/debug/lib64/libc-2.16.so.debug", from_tty=1, flags=0) at symfile.c:1235 #15 0x000000000052e6cf in catch_command_errors (command=0x50a1a0 <symbol_file_add_main>, arg=arg@entry=0x7fff1d59fdaa "/usr/lib/debug/lib64/libc-2.16.so.debug", from_tty=1, mask=mask@entry=6) at exceptions.c:573 #16 0x0000000000530add in captured_main (data=data@entry=0x7fff1d59ea80) at main.c:899 (the crash happens also on a regular "bt" command of some crashed application, but this is the easiest testcase)