Kostik Belousov <kostik...@gmail.com> wrote: > On Fri, Aug 27, 2010 at 06:21:08PM +0200, Fabian Keil wrote: > > The recent lib/libc/stdlib/atexit.c changes broke emacs (23.2_2,2) for > > me. It aborts on exit (C-x C-c) after receiving SIGBUS: > > > > f...@r500 ~ $gdb emacs > > GNU gdb 6.1.1 [FreeBSD] > > Copyright 2004 Free Software Foundation, Inc. > > GDB is free software, covered by the GNU General Public License, and > > you are welcome to change it and/or distribute copies of it under > > certain conditions. Type "show copying" to see the conditions. > > There is absolutely no warranty for GDB. Type "show warranty" for > > details. This GDB was configured as "amd64-marcel-freebsd"... > > (gdb) run > > Starting program: /usr/local/bin/emacs > > [New LWP 100281] > > [New Thread 1260600 (LWP 100281)] > > > > Program received signal SIGBUS, Bus error. > > [Switching to Thread 1260600 (LWP 100281)] > > 0x00000008045c432d in __elf_phdr_match_addr () from /lib/libc.so.7 > > (gdb) where > > #0 0x00000008045c432d in __elf_phdr_match_addr () from /lib/libc.so.7 > > #1 0x0000000803038abb in __pthread_cxa_finalize () > > from /lib/libthr.so.3 #2 0x00000008045bdfa7 in __cxa_finalize () > > from /lib/libc.so.7 #3 0x00000008045682c7 in exit () > > from /lib/libc.so.7 #4 0x0000000000556817 in Fkill_emacs (arg=Could > > not find the frame base for "Fkill_emacs". ) at emacs.c:2146 > > #5 0x0000000000600ec0 in Ffuncall (nargs=1, args=0x7fffffffc880) at > > eval.c:3024 #6 0x0000000000658d47 in Fbyte_code (bytestr=8602321, > > vector=8602357, maxdepth=20) at bytecode.c:680 #7 0x00000000006017e6 > > in funcall_lambda (fun=8602229, nargs=0, arg_vector=0x7fffffffcdc8) at > > eval.c:3211 #8 0x00000000006011e0 in Ffuncall (nargs=1, > > args=0x7fffffffcdc0) at eval.c:3070 #9 0x0000000000658d47 in > > Fbyte_code (bytestr=9558105, vector=9558141, maxdepth=20) at > > bytecode.c:680 #10 0x00000000006017e6 in funcall_lambda (fun=9558029, > > nargs=1, arg_vector=0x7fffffffd358) at eval.c:3211 #11 > > 0x00000000006011e0 in Ffuncall (nargs=2, args=0x7fffffffd350) at > > eval.c:3070 #12 0x00000000005fb954 in Fcall_interactively > > (function=11961778, record_flag=11544578, keys=20138021) at > > callint.c:869 #13 0x0000000000600f36 in Ffuncall (nargs=4, > > args=0x7fffffffd760) at eval.c:3030 #14 0x00000000006008fd in call3 > > (fn=11756290, arg1=11961778, arg2=11544578, arg3=20138021) at > > eval.c:2850 #15 0x000000000056b7ac in Fcommand_execute (cmd=11961778, > > record_flag=11544578, keys=20138021, special=11544674) at > > keyboard.c:10507 #16 0x000000000055cc69 in read_char (commandflag=1, > > nmaps=2, maps=0x7fffffffdb70, prev_event=11544578, > > used_mouse_menu=0x7fffffffded4, end_time=0x0) at keyboard.c:3166 #17 > > 0x000000000056880e in read_key_sequence (keybuf=0x7fffffffe280, > > bufsize=30, prompt=11544578, dont_downcase_last=0, > > can_return_switch_frame=1, fix_current_buffer=1) at keyboard.c:9512 > > #18 0x0000000000558a33 in command_loop_1 () at keyboard.c:1643 #19 > > 0x00000000005fe0aa in internal_condition_case (bfun=0x5586a0 > > <command_loop_1>, handlers=11629954, hfun=0x557f90 <cmd_error>) at > > eval.c:1490 #20 0x000000000055836a in command_loop_2 () at > > keyboard.c:1360 #21 0x00000000005fda2c in internal_catch > > (tag=11621170, func=0x558350 <command_loop_2>, arg=11544578) at > > eval.c:1226 #22 0x0000000000558320 in command_loop () at > > keyboard.c:1339 #23 0x0000000000557a85 in recursive_edit_1 () at > > keyboard.c:954 #24 0x0000000000557c45 in Frecursive_edit () at > > keyboard.c:1016 #25 0x00000000005560b8 in main (argc=1, > > argv=0x7fffffffe840) at emacs.c:1833 > > > > Reverting to lib/libc/stdlib/atexit.c 1.9 gets it working again, > > using 1.11 brings back the crashes. I didn't csup between those > > versions and thus don't have 1.10 in git, but given that it's a > > style change it shouldn't matter. > > > > I'm using amd64 and so far I only noticed the problem with emacs. > > > > Is anyone else seeing this? > Reverting the atexit change might cover the issue in some other place. > Please build and install rtld, libc and libthr with symbolic > debug information. On of the way to do this is to: > cd /usr/src/libexec/rtld-elf > make obj && make depend && make all install DEBUG_FLAGS=-g > cd ../../lib/libc > make obj && make depend && make all install DEBUG_FLAGS=-g > cd ../../lib/libthr > make obj && make depend && make all install DEBUG_FLAGS=-g > > Then, reproduce the crash and get "bt full" output from the > core. I may need some further information after that.
#0 0x00000008045dd44c in kill () at kill.S:3 3 RSYSCALL(kill) [New Thread 1260600 (LWP 100244)] (gdb) bt full #0 0x00000008045dd44c in kill () at kill.S:3 No locals. #1 0x00000000005545c0 in fatal_error_signal (sig=10) at emacs.c:402 No locals. #2 <signal handler called> No symbol table info available. #3 __elf_phdr_match_addr (phdr_info=0x7fffffffcf90, addr=0x69ba20) at /usr/src/lib/libc/gen/elf_utils.c:39 i = 109 #4 0x0000000803038fdb in __pthread_cxa_finalize (phdr_info=0x7fffffffcf90) at /usr/src/lib/libthr/thread/thr_fork.c:109 af = (struct pthread_atfork *) 0xe1e7c0 af1 = (struct pthread_atfork *) 0x0 #5 0x00000008045be0a7 in __cxa_finalize (dso=0x0) at /usr/src/lib/libc/stdlib/atexit.c:204 phdr_info = {dlpi_addr = 0, dlpi_name = 0x7fffffffd080 "`Ñÿÿÿ\177", dlpi_phdr = 0x7fffffffe848, dlpi_phnum = 59448, dlpi_adds = 0, dlpi_subs = 34367899629, dlpi_tls_modid = 15046784, dlpi_tls_data = 0x12c2538} p = (struct atexit *) 0x0 fn = {fn_type = 1, fn_ptr = {std_func = 0x8007ccff0 <rtld_exit>, cxa_func = 0x8007ccff0 <rtld_exit>}, fn_arg = 0x0, fn_dso = 0x0} n = -1 has_phdr = 0 #6 0x00000008045683c7 in exit (status=0) at /usr/src/lib/libc/stdlib/exit.c:67 No locals. #7 0x0000000000556817 in Fkill_emacs (arg=Could not find the frame base for "Fkill_emacs". ) at emacs.c:2146 gcpro1 = Could not find the frame base for "Fkill_emacs". Current language: auto; currently asm Fabian
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