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This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
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This commit fixes detaching on Linux when some thread exits the whole
thread group (process) just while we're detaching.
On Linux, a ptracer must detach from each LWP individually, with
PTRACE_DETACH. Since PTRACE_DETACH sets the thread running free, if
one of the already-detached threads causes the whole thread group to
exit (e.g., simply calls exit), the kernel force-kills the other
threads in the group, making them zombie, just as we're still
detaching them. Since PTRACE_DETACH against a zombie thread fails
with ESRCH, and gdb/gdbserver are not expecting this, the detach fails
with an error like: "Can't detach process: No such process.".
This patch detects this detach failure as normal, and instead of
erroring out, reaps the now-dead thread.
New test included, that exercises several different scenarios that
cause GDB/GDBserver to error out when it should not.
Tested on x86-64 GNU/Linux with {unix, native-gdbserver,
native-extended-gdbserver}
Note: without the previous fix, the "single-process + continue"
variant of the new test would fail with:
(gdb) PASS: gdb.threads/process-dies-while-detaching.exp: single-process: continue: watchpoint: switch to parent
continue
Continuing.
Warning:
Could not insert hardware watchpoint 3.
Could not insert hardware breakpoints:
You may have requested too many hardware breakpoints/watchpoints.
Command aborted.
(gdb) FAIL: gdb.threads/process-dies-while-detaching.exp: single-process: continue: watchpoint: continue
gdb/gdbserver/ChangeLog:
2016-07-01 Pedro Alves <palves@redhat.com>
Antoine Tremblay <antoine.tremblay@ericsson.com>
* linux-low.c: Change interface to take the target lwp_info
pointer directly and return void. Handle detaching from a zombie
thread.
(linux_detach_lwp_callback): New function.
(linux_detach): Detach from the leader thread after detaching from
the clone threads.
gdb/ChangeLog:
2016-07-01 Pedro Alves <palves@redhat.com>
Antoine Tremblay <antoine.tremblay@ericsson.com>
* inf-ptrace.c (inf_ptrace_detach_success): New function, factored
out from ...
(inf_ptrace_detach): ... here.
* inf-ptrace.h (inf_ptrace_detach_success): New declaration.
* linux-nat.c (get_pending_status): Rename to ...
(get_detach_signal): ... this, and return a host signal instead of
filling in a wait status.
(detach_one_lwp): New function, factored out from detach_callback
and adjusted to handle detaching from a zombie thread.
(detach_callback): Skip the leader thread.
(linux_nat_detach): No longer defer to inf_ptrace_detach to detach
the leader thread, nor build a signal string to pass down.
Instead, use target_announce_detach, detach_one_lwp and
inf_ptrace_detach_success.
gdb/testsuite/ChangeLog:
2016-07-01 Pedro Alves <palves@redhat.com>
Antoine Tremblay <antoine.tremblay@ericsson.com>
* gdb.threads/process-dies-while-detaching.c: New file.
* gdb.threads/process-dies-while-detaching.exp: New file.
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This allows gdb to fetch per-thread registers for multi-threaded FreeBSD
processes.
Export get_ptrace_pid() from inf-ptrace.c and use it to determine the PID
to pass to ptrace in pan-BSD native targets. NetBSD and OpenBSD also accept
LWP IDs for ptrace requests to fetch per-thread state.
gdb/ChangeLog:
* amd64bsd-nat.c (amd64bsd_fetch_inferior_registers): Use
get_ptrace_pid.
(amd64bsd_store_inferior_registers): Use get_ptrace_pid.
(amd64bsd_dr_get): Use get_ptrace_pid.
(amd64bsd_dr_set): Use get_ptrace_pid.
* i386bsd-nat.c (i386bsd_fetch_inferior_registers): Use get_ptrace_pid.
(i386bsd_store_inferior_registers): Use get_ptrace_pid.
(i386bsd_dr_get): Use get_ptrace_pid.
(i386bsd_dr_set): Use get_ptrace_pid.
* inf-ptrace.c (get_ptrace_pid): Export.
* inf-ptrace.h (get_ptrace_pid): Declare.
* ppcfbsd-nat.c (ppcfbsd_fetch_inferior_registers): Use lwp id.
(ppcfbsd_store_inferior_registers): Use lwp id.
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gdb/ChangeLog:
Update year range in copyright notice of all files.
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gdb/ChangeLog:
Update year range in copyright notice of all files.
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Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
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gdb/ChangeLog:
Copyright year update in most files of the GDB Project.
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Automatic update by copyright.sh.
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Switch the license of all .h files to GPLv3.
Switch the license of all .cc files to GPLv3.
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(inf_ptrace_fetch_register): Add register_u_offset callback parameters
GDBARCH and STORE_P. Handle callback (CORE_ADDR) -1 return value.
(inf_ptrace_store_register): Likewise.
(inf_ptrace_trad_target): Adapt register_u_offset parameter list.
* inf-ptrace.h (inf_ptrace_trad_target): Likewise.
* vax-nat.c (vax_register_u_offset): Adapt parameter list.
* linux-nat.c (linux_trad_target): Adapt parameter list.
* linux-nat.h (linux_trad_target): Likewise.
* alpha-linux-nat.c (alpha_linux_register_u_offset): Adapt parameters.
* mips-linux-nat.c (mips_linux_cannot_fetch_register): Remove.
(mips_linux_cannot_store_register): Likewise.
(mips_linux_register_addr): Add GDBARCH and STORE_P parameters.
Return (CORE_ADDR) -1 for registers that cannot be fetched or
stored via ptrace. Use GDBARCH instead of current_gdbarch.
(mips64_linux_register_addr): Likewise.
(mips_linux_register_u_offset): Adapt parameter list. Pass
GDBARCH and STORE_P on to mips{64}_linux_register_addr.
* config/mips/linux.mh (NAT_FILE): Set to config/nm-linux.h.
* config/mips/nm-linux.h: Delete file.
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* arm-tdep.c:
* ia64-tdep.c:
* i386-tdep.c:
* hpread.c:
* hppa-tdep.c:
* hppa-hpux-tdep.c:
* gnu-nat.c:
* gdbtypes.c:
* gdbarch.h:
* gdbarch.c:
* eval.c:
* dwarf2read.c:
* dbxread.c:
* copying:
* symfile.c:
* stabsread.c:
* sh64-tdep.c:
* sh-tdep.c:
* s390-tdep.c:
* rs6000-tdep.c:
* remote.c:
* remote-mips.c:
* mips-tdep.c:
* mdebugread.c:
* linux-nat.c:
* infrun.c:
* xcoffread.c:
* win32-nat.c:
* valops.c:
* utils.c:
* tracepoint.c:
* target.c:
* symtab.c:
* c-exp.y:
* ada-valprint.c:
* ada-typeprint.c:
* ada-lex.l:
* ada-lang.h:
* ada-lang.c:
* ada-exp.y:
* alphafbsd-tdep.c:
* alphabsd-tdep.h:
* alphabsd-tdep.c:
* alphabsd-nat.c:
* alpha-tdep.h:
* alpha-tdep.c:
* alpha-osf1-tdep.c:
* alpha-nat.c:
* alpha-mdebug-tdep.c:
* alpha-linux-tdep.c:
* alpha-linux-nat.c:
* aix-thread.c:
* abug-rom.c:
* arch-utils.c:
* annotate.h:
* annotate.c:
* amd64obsd-tdep.c:
* amd64obsd-nat.c:
* amd64nbsd-tdep.c:
* amd64nbsd-nat.c:
* amd64fbsd-tdep.c:
* amd64fbsd-nat.c:
* amd64bsd-nat.c:
* amd64-tdep.h:
* amd64-tdep.c:
* amd64-sol2-tdep.c:
* amd64-nat.h:
* amd64-nat.c:
* amd64-linux-tdep.c:
* amd64-linux-nat.c:
* alphanbsd-tdep.c:
* block.h:
* block.c:
* bfd-target.h:
* bfd-target.c:
* bcache.h:
* bcache.c:
* ax.h:
* ax-general.c:
* ax-gdb.h:
* ax-gdb.c:
* avr-tdep.c:
* auxv.h:
* auxv.c:
* armnbsd-tdep.c:
* armnbsd-nat.c:
* arm-tdep.h:
* arm-linux-nat.c:
* arch-utils.h:
* charset.c:
* call-cmds.h:
* c-valprint.c:
* c-typeprint.c:
* c-lang.h:
* c-lang.c:
* buildsym.h:
* buildsym.c:
* bsd-uthread.h:
* bsd-uthread.c:
* bsd-kvm.h:
* bsd-kvm.c:
* breakpoint.h:
* core-regset.c:
* core-aout.c:
* completer.h:
* completer.c:
* complaints.h:
* complaints.c:
* command.h:
* coffread.c:
* coff-solib.h:
* coff-solib.c:
* coff-pe-read.h:
* coff-pe-read.c:
* cli-out.h:
* cli-out.c:
* charset.h:
* dink32-rom.c:
* dictionary.h:
* dictionary.c:
* demangle.c:
* defs.h:
* dcache.h:
* dcache.c:
* d10v-tdep.c:
* cpu32bug-rom.c:
* cp-valprint.c:
* cp-support.h:
* cp-support.c:
* cp-namespace.c:
* cp-abi.h:
* cp-abi.c:
* corelow.c:
* corefile.c:
* environ.c:
* elfread.c:
* dwarfread.c:
* dwarf2loc.c:
* dwarf2expr.h:
* dwarf2expr.c:
* dwarf2-frame.h:
* dwarf2-frame.c:
* dve3900-rom.c:
* dummy-frame.h:
* dummy-frame.c:
* dsrec.c:
* doublest.h:
* doublest.c:
* disasm.h:
* disasm.c:
* fork-child.c:
* findvar.c:
* fbsd-nat.h:
* fbsd-nat.c:
* f-valprint.c:
* f-typeprint.c:
* f-lang.h:
* f-lang.c:
* expression.h:
* expprint.c:
* exec.h:
* exec.c:
* exceptions.h:
* exceptions.c:
* event-top.h:
* event-top.c:
* event-loop.h:
* event-loop.c:
* gdb.c:
* gdb-stabs.h:
* gdb-events.h:
* gdb-events.c:
* gcore.c:
* frv-tdep.h:
* frv-tdep.c:
* frv-linux-tdep.c:
* frame.h:
* frame.c:
* frame-unwind.h:
* frame-unwind.c:
* frame-base.h:
* frame-base.c:
* gdb_vfork.h:
* gdb_thread_db.h:
* gdb_string.h:
* gdb_stat.h:
* gdb_regex.h:
* gdb_ptrace.h:
* gdb_proc_service.h:
* gdb_obstack.h:
* gdb_locale.h:
* gdb_dirent.h:
* gdb_curses.h:
* gdb_assert.h:
* gdbarch.sh:
* gdb.h:
* hpux-thread.c:
* hppabsd-nat.c:
* hppa-tdep.h:
* hpacc-abi.c:
* h8300-tdep.c:
* gregset.h:
* go32-nat.c:
* gnu-v3-abi.c:
* gnu-v2-abi.h:
* gnu-v2-abi.c:
* gnu-nat.h:
* glibc-tdep.c:
* gdbtypes.h:
* gdbcore.h:
* gdbcmd.h:
* i386nbsd-tdep.c:
* i386nbsd-nat.c:
* i386gnu-tdep.c:
* i386gnu-nat.c:
* i386fbsd-tdep.c:
* i386fbsd-nat.c:
* i386bsd-tdep.c:
* i386bsd-nat.h:
* i386bsd-nat.c:
* i386-tdep.h:
* i386-sol2-nat.c:
* i386-nto-tdep.c:
* i386-nat.c:
* i386-linux-tdep.h:
* i386-linux-tdep.c:
* i386-linux-nat.c:
* i386-cygwin-tdep.c:
* inf-ttrace.c:
* inf-ptrace.h:
* inf-ptrace.c:
* inf-loop.h:
* inf-loop.c:
* inf-child.h:
* inf-child.c:
* ia64-tdep.h:
* ia64-linux-nat.c:
* i387-tdep.h:
* i387-tdep.c:
* i386v4-nat.c:
* i386v-nat.c:
* i386obsd-tdep.c:
* i386obsd-nat.c:
* kod.c:
* jv-valprint.c:
* jv-typeprint.c:
* jv-lang.h:
* jv-lang.c:
* irix5-nat.c:
* iq2000-tdep.c:
* interps.h:
* interps.c:
* inftarg.c:
* inflow.h:
* inflow.c:
* inferior.h:
* infcmd.c:
* infcall.h:
* infcall.c:
* inf-ttrace.h:
* m32r-tdep.h:
* m32r-tdep.c:
* m32r-rom.c:
* m32r-linux-tdep.c:
* m32r-linux-nat.c:
* m2-valprint.c:
* m2-typeprint.c:
* m2-lang.h:
* m2-lang.c:
* lynx-nat.c:
* linux-thread-db.c:
* linux-nat.h:
* linespec.c:
* libunwind-frame.h:
* libunwind-frame.c:
* language.h:
* language.c:
* macroexp.c:
* macrocmd.c:
* m88kbsd-nat.c:
* m88k-tdep.h:
* m88k-tdep.c:
* m68klinux-tdep.c:
* m68klinux-nat.c:
* m68kbsd-tdep.c:
* m68kbsd-nat.c:
* m68k-tdep.h:
* m68k-tdep.c:
* mips-linux-nat.c:
* mips-irix-tdep.c:
* minsyms.c:
* memattr.h:
* memattr.c:
* mem-break.c:
* mdebugread.h:
* main.h:
* main.c:
* macrotab.h:
* macrotab.c:
* macroscope.h:
* macroscope.c:
* macroexp.h:
* nbsd-tdep.c:
* mt-tdep.c:
* monitor.h:
* monitor.c:
* mn10300-tdep.h:
* mn10300-tdep.c:
* mn10300-linux-tdep.c:
* mipsv4-nat.c:
* mipsread.c:
* mipsnbsd-tdep.h:
* mipsnbsd-tdep.c:
* mipsnbsd-nat.c:
* mips64obsd-tdep.c:
* mips64obsd-nat.c:
* mips-tdep.h:
* mips-mdebug-tdep.c:
* mips-linux-tdep.c:
* osabi.h:
* osabi.c:
* ocd.h:
* ocd.c:
* observer.c:
* objfiles.h:
* objfiles.c:
* objc-lang.h:
* objc-lang.c:
* objc-exp.y:
* nto-tdep.h:
* nto-tdep.c:
* nto-procfs.c:
* nlmread.c:
* nbsd-tdep.h:
* ppcobsd-tdep.c:
* ppcobsd-nat.c:
* ppcnbsd-tdep.h:
* ppcnbsd-tdep.c:
* ppcnbsd-nat.c:
* ppcbug-rom.c:
* ppc-tdep.h:
* ppc-sysv-tdep.c:
* ppc-linux-tdep.c:
* ppc-linux-nat.c:
* ppc-bdm.c:
* parser-defs.h:
* parse.c:
* p-valprint.c:
* p-typeprint.c:
* p-lang.h:
* p-lang.c:
* remote-fileio.h:
* remote-fileio.c:
* remote-est.c:
* remote-e7000.c:
* regset.h:
* regset.c:
* reggroups.h:
* reggroups.c:
* regcache.h:
* regcache.c:
* proc-why.c:
* proc-service.c:
* proc-events.c:
* printcmd.c:
* ppcobsd-tdep.h:
* sentinel-frame.h:
* sentinel-frame.c:
* scm-valprint.c:
* scm-tags.h:
* scm-lang.h:
* scm-lang.c:
* scm-exp.c:
* s390-tdep.h:
* rom68k-rom.c:
* remote.h:
* remote-utils.c:
* remote-st.c:
* remote-sim.c:
* remote-sds.c:
* remote-rdp.c:
* remote-rdi.c:
* remote-hms.c:
* sim-regno.h:
* shnbsd-tdep.h:
* shnbsd-tdep.c:
* shnbsd-nat.c:
* sh-tdep.h:
* serial.h:
* serial.c:
* ser-unix.h:
* ser-unix.c:
* ser-tcp.c:
* ser-pipe.c:
* ser-go32.c:
* ser-e7kpc.c:
* ser-base.h:
* ser-base.c:
* solib.c:
* solib-svr4.h:
* solib-svr4.c:
* solib-sunos.c:
* solib-som.h:
* solib-som.c:
* solib-pa64.h:
* solib-pa64.c:
* solib-osf.c:
* solib-null.c:
* solib-legacy.c:
* solib-irix.c:
* solib-frv.c:
* solib-aix5.c:
* sol-thread.c:
* sparc64-linux-tdep.c:
* sparc64-linux-nat.c:
* sparc-tdep.h:
* sparc-tdep.c:
* sparc-sol2-tdep.c:
* sparc-sol2-nat.c:
* sparc-nat.h:
* sparc-nat.c:
* sparc-linux-tdep.c:
* sparc-linux-nat.c:
* source.h:
* source.c:
* somread.c:
* solist.h:
* solib.h:
* std-regs.c:
* stack.h:
* stack.c:
* stabsread.h:
* sparcobsd-tdep.c:
* sparcnbsd-tdep.c:
* sparcnbsd-nat.c:
* sparc64obsd-tdep.c:
* sparc64nbsd-tdep.c:
* sparc64nbsd-nat.c:
* sparc64fbsd-tdep.c:
* sparc64fbsd-nat.c:
* sparc64-tdep.h:
* sparc64-tdep.c:
* sparc64-sol2-tdep.c:
* sparc64-nat.c:
* ui-file.c:
* typeprint.h:
* typeprint.c:
* tramp-frame.h:
* tramp-frame.c:
* trad-frame.h:
* trad-frame.c:
* tracepoint.h:
* top.c:
* tobs.inc:
* thread.c:
* terminal.h:
* target.h:
* symfile.h:
* stop-gdb.c:
* vaxbsd-nat.c:
* vax-tdep.h:
* vax-tdep.c:
* vax-nat.c:
* varobj.h:
* varobj.c:
* value.h:
* value.c:
* valprint.h:
* valprint.c:
* v850-tdep.c:
* uw-thread.c:
* user-regs.c:
* ui-out.h:
* ui-out.c:
* ui-file.h:
* xcoffsolib.h:
* xcoffsolib.c:
* wrapper.c:
* wince.c:
* wince-stub.h:
* wince-stub.c:
* vaxobsd-tdep.c:
* vaxnbsd-tdep.c:
* gdb_gcore.sh:
* copying.c:
* configure.ac:
* aclocal.m4:
* acinclude.m4:
* reply_mig_hack.awk:
* observer.sh:
* gdb_mbuild.sh:
* arm-linux-tdep.c:
* blockframe.c:
* dbug-rom.c:
* environ.h:
* dwarf2loc.h:
* gdb-events.sh:
* glibc-tdep.h:
* gdb_wait.h:
* gdbthread.h:
* i386-sol2-tdep.c:
* hppabsd-tdep.c:
* hppa-linux-nat.c:
* hppa-hpux-nat.c:
* ia64-linux-tdep.c:
* infptrace.c:
* linespec.h:
* maint.c:
* mips-mdebug-tdep.h:
* remote-m32r-sdi.c:
* s390-nat.c:
* rs6000-nat.c:
* remote-utils.h:
* sh3-rom.c:
* sh-linux-tdep.c:
* top.h:
* symtab.h:
* symmisc.c:
* symfile-mem.c:
* srec.h:
* user-regs.h:
* version.h:
* valarith.c:
* xstormy16-tdep.c:
* wrapper.h:
* Makefile.in:
* f-exp.y:
* cris-tdep.c:
* cp-name-parser.y:
* procfs.c:
* proc-utils.h:
* proc-flags.c:
* proc-api.c:
* p-exp.y:
* m68hc11-tdep.c:
* m2-exp.y:
* kod.h:
* kod-cisco.c:
* jv-exp.y:
* hppa-linux-tdep.c: Add (c) after Copyright. Update the FSF
address.
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inf-ptrace.c.
(inf_ptrace_trad_target): New prototype.
* inf-ptrace.c: Update copyright year. Include "regcache.h" and
"gdb_assert.h"
(inf_ptrace_target): Add comment.
(inf_ptrace+register_u_offset): New variable.
(inf_ptrace_fetch_register, inf_ptrace_fetch_registers)
(inf_ptrace_store_register, inf_ptrace_store_registers)
(inf_ptrace_trad_target): New functions.
* Makefile.in (inf-ptrace.o): Update dependencies.
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* ppcnbsd-nat.c: Include "inf-ptrace.h".
(ppcnbsd_fetch_inferior_registers): Rename fetch_inferior_registers.
(ppcnbsd_store_inferior_registers): Rename store_inferior_registers.
(_initialize_ppcnbsd_nat): Create and add a NetBSD/PPC ptrace
target.
* config/powerpc/nbsd.mh (NATDEPFILES): Replace and inftarg.o with
inf-ptrace.o and inf-child.o.
* inf-ptrace.h, inf-ptrace.c, inf-child.h, inf-child.c: New files.
* Makefile.in: Update dependencies.
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