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gdb crashing with dumptid = 0
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Authored by eadler on May 5 2018, 5:50 AM.
gdb$ bt
#0 thr_kill () at thr_kill.S:3
#1 0x00000008035046b4 in __raise (s=0x6) at /usr/src/lib/libc/gen/raise.c:54
#2 0x0000000803504629 in abort () at /usr/src/lib/libc/stdlib/abort.c:67
#3 0x0000000000c805c6 in dump_core () at utils.c:284
#4 0x0000000000c81920 in internal_vproblem (problem=0x24bd890
<internal_error_problem>, file=0x15c560e "inferior.c", line=0x135,
fmt=0x15780ac "%s: Assertion
`%s' failed.", ap=0x7fffffffb9e0) at utils.c:493
#5 0x0000000000c806d8 in internal_verror (file=0x15c560e
"inferior.c", line=0x135, fmt=0x15780ac "%s: Assertion `%s' failed.",
ap=0x7fffffffb9e0) at utils.c:
518
#6 0x00000000008363a8 in internal_error (file=0x15c560e "inferior.c",
line=0x135, fmt=0x15780ac "%s: Assertion `%s' failed.") at
common/errors.c:55
#7 0x0000000000a8397e in find_inferior_pid (pid=0x0) at inferior.c:309
#8 0x0000000000a83d54 in find_inferior_ptid (ptid=...) at inferior.c:323
#9 0x0000000000c10049 in default_thread_architecture (ops=0x2702d90
<dummy_target>, ptid=...) at target.c:3131
#10 0x0000000000bfec2b in delegate_thread_architecture (self=0x2702d90
<dummy_target>, arg1=...) at ./target-delegates.c:2525
#11 0x0000000000bfec2b in delegate_thread_architecture (self=0x26eedd0
<exec_ops>, arg1=...) at ./target-delegates.c:2525
#12 0x0000000000bfec2b in delegate_thread_architecture (self=0x26ec280
<kgdb_trgt_ops>, arg1=...) at ./target-delegates.c:2525
#13 0x0000000000b53cba in get_thread_regcache (ptid=...) at regcache.c:439
#14 0x0000000000b53d5e in get_current_regcache () at regcache.c:448
#15 0x0000000000713077 in kgdb_trgt_open (arg=0x80410900e "vmcore.2",
from_tty=0x1) at fbsd-kvm.c:335
#16 0x0000000000bf3980 in open_target (args=0x80410900e "vmcore.2",
from_tty=0x1, command=0x8041c8f40) at target.c:356
#17 0x0000000000722c35 in do_sfunc (c=0x8041c8f40, args=0x80410900e
"vmcore.2", from_tty=0x1) at cli/cli-decode.c:122
#18 0x0000000000726b5a in cmd_func (cmd=0x8041c8f40, args=0x80410900e
"vmcore.2", from_tty=0x1) at cli/cli-decode.c:1886
#19 0x0000000000c450c7 in execute_command (p=0x804109015 "2",
from_tty=0x1) at top.c:630
#20 0x0000000000acd4a8 in catch_command_errors (command=0xc445f0
<execute_command(char const*, int)>, arg=0x804109000 "target vmcore
vmcore.2", from_tty=0x1)
at main.c:378
#21 0x0000000000accdf2 in captured_main_1 (context=0x7fffffffcfe8) at
main.c:1124
#22 0x0000000000aca62d in captured_main (data=0x7fffffffcfe8) at main.c:1146
#23 0x0000000000aca508 in gdb_main (args=0x7fffffffcfe8) at main.c:1172
#24 0x000000000050bd5b in main (argc=0x3, argv=0x7fffffffd558) at
kgdb-main.c:410
gdb$ up 7
#7 0x0000000000a8397e in find_inferior_pid (pid=0x0) at inferior.c:309
309 gdb_assert (pid != 0);
gdb$ frame
Stack level 7, frame at 0x7fffffffba50:
rip = 0xa8397e in find_inferior_pid (inferior.c:309); saved rip = 0xa83d54
called by frame at 0x7fffffffba60, caller of frame at 0x7fffffffba20
source language c++.
Arglist at 0x7fffffffba40, args: pid=0x0
Locals at 0x7fffffffba40, Previous frame's sp is 0x7fffffffba50
Saved registers:
rbp at 0x7fffffffba40, rip at 0x7fffffffba48
pid = 0x0
inf = 0x8415d5 <ptid_get_pid(ptid_t const&)+21>
gdb$ list
304 struct inferior *inf;
305
306 /* Looking for inferior pid == 0 is always wrong, and indicative of
307 a bug somewhere else. There may be more than one with pid == 0,
308 for instance. */
309 gdb_assert (pid != 0);
310
311 for (inf = inferior_list; inf; inf = inf->next)
312 if (inf->pid == pid)
313 return inf;
gdb$ p pid
$1 = 0x0
gdb$ p ptid
$2 = {
m_pid = 0x0,
m_lwp = 0x0,
m_tid = 0x0
}
gdb$ up
#9 0x0000000000c10049 in default_thread_architecture (ops=0x2702d90
<dummy_target>, ptid=...) at target.c:3131
3131 inferior *inf = find_inferior_ptid (ptid);
gdb$ list
3126 }
3127
3128 static struct gdbarch *
3129 default_thread_architecture (struct target_ops *ops, ptid_t ptid)
3130 {
3131 inferior *inf = find_inferior_ptid (ptid);
3132 gdb_assert (inf != NULL);
3133 return inf->gdbarch;
3134 }
3135
gdb$ p ops
$4 = (target_ops *) 0x2702d90 <dummy_target>
gdb$ up
#14 0x0000000000b53d5e in get_current_regcache () at regcache.c:448
448 return get_thread_regcache (inferior_ptid);
gdb$ list
443 }
444
445 struct regcache *
446 get_current_regcache (void)
447 {
448 return get_thread_regcache (inferior_ptid);
449 }
450
451 /* See common/common-regcache.h. */
452
gdb$ p inferior_ptid
$13 = {
m_pid = 0x0,
m_lwp = 0x0,
m_tid = 0x0
}
gdb$ up
#15 0x0000000000713077 in kgdb_trgt_open (arg=0x80410900e "vmcore.2",
from_tty=0x1) at fbsd-kvm.c:335
335 target_fetch_registers (get_current_regcache (), -1);
gdb$ list
330 kt = kgdb_thr_next(kt);
331 }
332 if (curkthr != 0)
333 inferior_ptid = fbsd_vmcore_ptid(curkthr->tid);
334
335 target_fetch_registers (get_current_regcache (), -1);
336
337 reinit_frame_cache ();
338 print_stack_frame (get_selected_frame (NULL), 0,
SRC_AND_LOC, 1);
339 }
gdb$ p inferior_ptid
$17 = {
m_pid = 0x0,
m_lwp = 0x0,
m_tid = 0x0
}
gdb$ p curkthr
$18 = (kthr *) 0x0
gdb$ frame
Stack level 15, frame at 0x7fffffffbd90:
rip = 0x713077 in kgdb_trgt_open (fbsd-kvm.c:335); saved rip = 0xbf3980
called by frame at 0x7fffffffbdc0, caller of frame at 0x7fffffffbc40
source language c++.
Arglist at 0x7fffffffbd80, args: arg=0x80410900e "vmcore.2", from_tty=0x1
Locals at 0x7fffffffbd80, Previous frame's sp is 0x7fffffffbd90
Saved registers:
rbp at 0x7fffffffbd80, rip at 0x7fffffffbd88
arg = 0x80410900e "vmcore.2"
from_tty = 0x1
ops = 0x8043ef840
inf = 0x80442de80
old_chain = 0x804431820
ti = 0x7fffffffd550
kt = 0x0
nkvm = 0x804363800
temp = 0x8047f33b0 "/home/eax/crashes/aes_gpault_crash/vmcore.2"
kernel = 0x8043dec80 "/home/eax/crashes/aes_gpault_crash/kernel/kernel"
filename = 0x8047f33b0 "/home/eax/crashes/aes_gpault_crash/vmcore.2"
ontop = 0x0
gdb$ p curkthr
$19 = (kthr *) 0x0
which is coming from
curkthr = kgdb_thr_lookup_tid(dumptid);
if (curkthr == NULL)
curkthr = first;
gdb$ p dumptid
$20 = 0x0
which is coming from
TRY {
dumptid = parse_and_eval_long("dumptid");
} CATCH(e, RETURN_MASK_ERROR) {
dumptid = -1;
} END_CATCH

Event Timeline

eadler created this paste.May 5 2018, 5:50 AM
eadler created this object in space S1 Global.
eadler changed the title of this paste from untitled to gdb crashing with dumptid = 0.