gdb crash
Tom Tromey
tromey@cygnus.com
Thu Jul 27 11:42:00 GMT 2000
I'm using Red Hat x86 Linux 6.2. I'm using a sourceware gdb that I
checked out and built from scratch yesterday. I'm debugging a
gcj-compiled Java program that uses several shared libraries. I'm
using today's gcj. If I set a breakpoint in one of the shared
libraries, then gdb will sometimes crash when re-running my program.
Stack trace plus some additional info appended.
Tom
Program received signal SIGSEGV, Segmentation fault.
strcmp (p1=0x0, p2=0x8ea14ac "/x1/egcs/install/lib/libjserv.so.0")
at ../sysdeps/generic/strcmp.c:38
38 ../sysdeps/generic/strcmp.c: No such file or directory.
(gdb) bt
#0 strcmp (p1=0x0, p2=0x8ea14ac "/x1/egcs/install/lib/libjserv.so.0")
at ../sysdeps/generic/strcmp.c:38
#1 0x80b2a87 in symbol_add_stub (arg=0x8ea1078) at ../../src/gdb/solib.c:1162
#2 0x80d91a3 in catch_errors (func=0x80b2a48 <symbol_add_stub>,
args=0x8ea1078,
errstring=0x8265100 "Error while reading shared library symbols:\n",
mask=6) at ../../src/gdb/top.c:611
#3 0x80b2de6 in solib_add (pattern=0x0, from_tty=0, target=0x0)
at ../../src/gdb/solib.c:1431
#4 0x80a06e3 in handle_inferior_event (ecs=0xbffff1a8)
at ../../src/gdb/infrun.c:2448
#5 0x809f9ca in wait_for_inferior () at ../../src/gdb/infrun.c:1291
#6 0x809f86c in proceed (addr=4294967295, siggnal=TARGET_SIGNAL_0, step=0)
at ../../src/gdb/infrun.c:1085
#7 0x80f2982 in child_create_inferior (
exec_file=0x8334c20 "/x2/tromey/netsrc/java/ApacheJServ-1.1.2/src/java/.libs/jserv-real-gij", allargs=0x8c8bbb8 "org.apache.jserv.JServ Dbg.properties",
env=0x83289b0) at ../../src/gdb/inftarg.c:495
#8 0x80b58e6 in linuxthreads_create_inferior (
exec_file=0x8334c20 "/x2/tromey/netsrc/java/ApacheJServ-1.1.2/src/java/.libs/jserv-real-gij", allargs=0x8c8bbb8 "org.apache.jserv.JServ Dbg.properties",
env=0x83289b0) at ../../src/gdb/linux-thread.c:1606
#9 0x80c37a1 in find_default_create_inferior (
exec_file=0x8334c20 "/x2/tromey/netsrc/java/ApacheJServ-1.1.2/src/java/.libs/jserv-real-gij", allargs=0x8c8bbb8 "org.apache.jserv.JServ Dbg.properties",
env=0x83289b0) at ../../src/gdb/target.c:1188
#10 0x809d513 in run_command (args=0x0, from_tty=1)
at ../../src/gdb/infcmd.c:343
#11 0x80d9e03 in execute_command (p=0x8320c99 "", from_tty=1)
at ../../src/gdb/top.c:1547
#12 0x80a8fd8 in command_handler (command=0x8320c98 "")
at ../../src/gdb/event-top.c:515
#13 0x80a95f2 in command_line_handler (rl=0x9256670 "\210\024o\b\200\a")
at ../../src/gdb/event-top.c:817
#14 0x8166c04 in rl_callback_read_char () at ../../src/readline/callback.c:114
#15 0x80a89e8 in rl_callback_read_char_wrapper (client_data=0x0)
at ../../src/gdb/event-top.c:166
#16 0x80a8ecd in stdin_event_handler (error=0, client_data=0x0)
at ../../src/gdb/event-top.c:422
#17 0x80f02b3 in handle_file_event (event_file_desc=0)
at ../../src/gdb/event-loop.c:748
#18 0x80efdd9 in process_event () at ../../src/gdb/event-loop.c:383
#19 0x80efe15 in gdb_do_one_event (data=0x0) at ../../src/gdb/event-loop.c:420
#20 0x80d91a3 in catch_errors (func=0x80efdec <gdb_do_one_event>, args=0x0,
errstring=0x827a700 "", mask=6) at ../../src/gdb/top.c:611
#21 0x80efe33 in start_event_loop () at ../../src/gdb/event-loop.c:444
#22 0x80a8ab5 in cli_command_loop () at ../../src/gdb/event-top.c:196
#23 0x8081205 in captured_command_loop (data=0x0) at ../../src/gdb/main.c:104
#24 0x80d91a3 in catch_errors (func=0x80811f0 <captured_command_loop>,
args=0x0, errstring=0x824ccc2 "", mask=6) at ../../src/gdb/top.c:611
#25 0x8081c67 in captured_main (data=0xbffff770) at ../../src/gdb/main.c:749
#26 0x80d91a3 in catch_errors (func=0x8081234 <captured_main>,
args=0xbffff770, errstring=0x824ccc2 "", mask=6) at ../../src/gdb/top.c:611
#27 0x8081c93 in main (argc=3, argv=0xbffff7c4) at ../../src/gdb/main.c:761
#28 0x4013c9cb in __libc_start_main (main=0x8081c6c <main>, argc=3,
argv=0xbffff7c4, init=0x807fa84 <_init>, fini=0x824cb7c <_fini>,
rtld_fini=0x4000ae60 <_dl_fini>, stack_end=0xbffff7bc)
at ../sysdeps/generic/libc-start.c:92
(gdb) up
#1 0x80b2a87 in symbol_add_stub (arg=0x8ea1078) at ../../src/gdb/solib.c:1162
(gdb) p so
$1 = (struct so_list *) 0x8ea1078
(gdb) p *so
$2 = {
next = 0x8ea16d0,
lm = {
l_addr = 1073827840,
l_name = 0x40014418 "X\236\005@`\236\005@h\236\005@",
l_ld = 0x40082594,
l_next = 0x400146d8,
l_prev = 0x40013ed0,
l_libname = 0x40014670,
l_info = {0x0, 0x400825c4, 0x40082614, 0x4008260c, 0x400825e4, 0x400825ec,
0x400825f4, 0x0, 0x0, 0x0, 0x400825fc, 0x40082604, 0x400825d4,
0x400825dc, 0x400825cc, 0x0, 0x0, 0x4008262c, 0x40082634, 0x4008263c,
0x4008261c, 0x0, 0x0, 0x40082624, 0x0 <repeats 55 times>, 0x4008264c,
0x40082644, 0x0 <repeats 13 times>, 0x40082654, 0x0, 0x0, 0x0},
l_phdr = 0x40015034,
l_entry = 1073975200,
l_phnum = 3,
l_searchlist = {
r_list = 0x0,
r_nlist = 0,
r_duplist = 0x0,
r_nduplist = 0
},
l_symbolic_searchlist = {
r_list = 0x0,
r_nlist = 0,
r_duplist = 0x0,
r_nduplist = 0
},
l_loader = 0x40013ed0,
l_nbuckets = 1031,
l_buckets = 0x4001509c,
l_chain = 0x400160b8,
l_opencount = 1,
l_type = lt_library,
l_relocated = 1,
l_init_called = 0,
l_init_running = 0,
l_global = 1,
l_reserved = 0,
l_nversions = 6,
l_versions = 0x403ded80,
l_rpath_dirs = 0x0,
l_reloc_result = 0x0,
l_versyms = 0x4002a5b2,
l_origin = 0x40014688 "ðC\001@èH\001@",
l_map_start = 1073827840,
l_map_end = 1074276448,
l_scope = {0x4001407c, 0x4001407c, 0x0, 0x0},
l_local_scope = {0x400145ec, 0x0},
l_dev = 2069,
l_ino = 311379,
l_phdr_allocated = 0
},
lmaddr = 1073824832,
so_original_name = "/x1/egcs/install/lib/libjserv.so.0", '\000' <repeats 477 times>,
so_name = "/x1/egcs/install/lib/libjserv.so.0", '\000' <repeats 477 times>,
abfd = 0x8e7d330,
lmend = 1074276448,
symbols_loaded = 0 '\000',
from_tty = 0 '\000',
objfile = 0x915b590,
sections = 0x8b2f3e0,
sections_end = 0x8b2f560,
textsection = 0x8b2f4b0
}
(gdb) p so->objfile->name
$3 = 0x0
(gdb) p so->so_name
$4 = "/x1/egcs/install/lib/libjserv.so.0", '\000' <repeats 477 times>
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