Attachment 431 Details for Bug 687 – truss output and gdb traces

truss output and gdb traces

crash (text/plain), 10.71 KB, created by Martin Siegert on 2003-09-19 14:58:04 AEST

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Creator: Martin Siegert

Created: 2003-09-19 14:58:04 AEST

Size: 10.71 KB

patch

obsolete

>truss output:
>
>debug1: auth2_challenge_start: trying authentication method 'pam'
>24304:	write(2, " d e b u g 1 :   a u t h".., 67)	= 67
>24304:	so_socket(1, 2, 0, "", 1)			= 3
>24304:	so_socket(1, 2, 0, "", 1)			= 9
>24304:	so_socketpair(0xEFFFEDA8)			= 0
>24304:	close(3)					= 0
>24304:	fork()						= 24565
>24565:	fork()		(returning as child ...)	= 24304
>24565:	stat64("/usr/lib/security/pam_unix.so.1", 0xEFFFEA88) = 0
>24565:	open("/usr/lib/security/pam_unix.so.1", O_RDONLY) = 3
>24565:	fstat(3, 0xEFFFE874)				= 0
>24565:	mmap(0x00000000, 8192, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xEF770000
>24565:	mmap(0x00000000, 163840, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xEF390000
>24565:	munmap(0xEF3A4000, 57344)			= 0
>24565:	mmap(0xEF3B2000, 17724, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 73728) = 0xEF3B2000
>24565:	close(3)					= 0
>24565:	munmap(0xEF770000, 8192)			= 0
>24565:	door_info(7, 0xEFFFDD10)			= 0
>24565:	door_call(7, 0xEFFFDCF8)			= 0
>24565:	open("/etc/shadow", O_RDONLY)			= 3
>24565:	fstat64(3, 0xEFFFDF10)				= 0
>24565:	ioctl(3, TCGETA, 0xEFFFDE9C)			Err#25 ENOTTY
>24565:	read(3, " r o o t : x x x x x x x".., 8192)	= 598
>24565:	open("/etc/nsswitch.conf", O_RDONLY)		= 11
>24565:	fstat64(11, 0xEFFFDDD0)				= 0
>24565:	brk(0x0009BEA0)					= 0
>24565:	brk(0x0009DEA0)					= 0
>24565:	ioctl(11, TCGETA, 0xEFFFDD5C)			Err#25 ENOTTY
>24565:	read(11, " #\n #   / e t c / n s s".., 8192)	= 680
>24565:	read(11, 0x0009B89C, 8192)			= 0
>24565:	llseek(11, 0, SEEK_CUR)				= 680
>24565:	close(11)					= 0
>24565:	getpid()					= 24565 [24304]
>24565:	fstat(8, 0xEFFFDC80)				= 0
>24565:	sigprocmask(SIG_SETMASK, 0xEFFFDC78, 0xEFFFDC68) = 0
>24565:	close(8)					= 0
>24565:	sigprocmask(SIG_SETMASK, 0xEFFFDC68, 0x00000000) = 0
>24565:	open("/var/yp/binding/sfu.ca/cache_binding", O_RDONLY) = 8
>24565:	fcntl(8, F_GETLK, 0xEFFFDB94)			= 0
>24565:	fstat64(8, 0xEFFFD940)				= 0
>24565:	ioctl(8, TCGETA, 0xEFFFD8CC)			Err#25 ENOTTY
>24565:	read(8, "\0\0\001\0\0\001\0\0\001".., 8192)	= 152
>24565:	llseek(8, 0, SEEK_CUR)				= 152
>24565:	close(8)					= 0
>24565:	llseek(8, 0, SEEK_CUR)				Err#9 EBADF
>24565:	open("/dev/udp", O_RDWR)			= 8
>24565:	ioctl(8, I_FIND, "timod")			= 0
>24565:	ioctl(8, I_PUSH, "timod")			= 0
>24565:	sigprocmask(SIG_SETMASK, 0xEFFFDC68, 0xEFFFDC58) = 0
>24565:	ioctl(8, I_STR, 0xEFFFDAE0)			= 0
>24565:	sigprocmask(SIG_SETMASK, 0xEFFFDC58, 0x00000000) = 0
>24565:	ioctl(8, I_FLUSH, FLUSHRW)			= 0
>24565:	sigprocmask(SIG_SETMASK, 0xEFFFDC68, 0xEFFFDC58) = 0
>24565:	ioctl(8, I_STR, 0xEFFFDBD0)			= 0
>24565:	sigprocmask(SIG_SETMASK, 0xEFFFDC58, 0x00000000) = 0
>24565:	ioctl(8, I_STR, 0xEFFFDAD8)			= 0
>24565:	brk(0x0009DEA0)					= 0
>24565:	brk(0x0009FEA0)					= 0
>24565:	getpid()					= 24565 [24304]
>24565:	ioctl(8, I_STR, 0xEFFFDB24)			= 0
>24565:	fstat(8, 0xEFFFDC6C)				= 0
>24565:	fcntl(8, F_SETFD, 0x00000001)			= 0
>24565:	fstat(8, 0xEFFFDD40)				= 0
>24565:	putmsg(8, 0xEFFFDC2C, 0xEFFFDD6C, 0)		= 0
>24565:	poll(0x0009B90C, 1, 15000)			= 1
>24565:	getmsg(8, 0xEFFFDC28, 0x00080970, 0xEFFFDC54)	= 0
>24565:	getpid()					= 24565 [24304]
>24565:	fstat(8, 0xEFFFDC38)				= 0
>24565:	putmsg(8, 0xEFFFDB24, 0xEFFFDC64, 0)		= 0
>24565:	poll(0x0009B90C, 1, 15000)			= 1
>24565:	getmsg(8, 0xEFFFDB20, 0x00080970, 0xEFFFDB4C)	= 0
>24565:	getpid()					= 24565 [24304]
>24565:	fstat(8, 0xEFFFDC38)				= 0
>24565:	putmsg(8, 0xEFFFDB24, 0xEFFFDC64, 0)		= 0
>24565:	poll(0x0009B90C, 1, 15000)			= 1
>24565:	getmsg(8, 0xEFFFDB20, 0x00080970, 0xEFFFDB4C)	= 0
>24565:	getpid()					= 24565 [24304]
>24565:	fstat(8, 0xEFFFDC38)				= 0
>24565:	putmsg(8, 0xEFFFDB24, 0xEFFFDC64, 0)		= 0
>24565:	poll(0x0009B90C, 1, 15000)			= 1
>24565:	getmsg(8, 0xEFFFDB20, 0x00080970, 0xEFFFDB4C)	= 0
>24565:	llseek(3, 0xFFFFFFFFFFFFFFC7, SEEK_CUR)		= 541
>24565:	close(3)					= 0
>24565:	    Incurred fault #6, FLTBOUNDS  %pc = 0x00031730
>24565:	      siginfo: SIGSEGV SEGV_MAPERR addr=0x00000008
>24565:	    Received signal #11, SIGSEGV [default]
>24565:	      siginfo: SIGSEGV SEGV_MAPERR addr=0x00000008
>24565:		*** process killed ***
>24304:	read(10, 0xEFFFEC78, 4)		(sleeping...)
>
>========================================================================
>
>Parent:
>debug1: auth2_challenge_start: trying authentication method 'pam'
>
>Breakpoint 1, pthread_create (thread=0x869f0, attr=0x0, 
>    thread_start=0x31824 <sshpam_thread>, arg=0x869f0) at auth-pam.c:84
>84		switch ((pid = fork())) {
>(gdb) cont
>Continuing.
>debug3: ssh_msg_recv entering
>^C
>Program received signal SIGINT, Interrupt.
>0xef438680 in _read () from /usr/lib/libc.so.1
>(gdb) where
>#0  0xef438680 in _read () from /usr/lib/libc.so.1
>#1  0x410b0 in atomicio (f=0x741a8 <read>, fd=10, _s=0xefffec30, n=4)
>    at atomicio.c:45
>#2  0x4597c in ssh_msg_recv (fd=10, m=0xefffece0) at msg.c:58
>#3  0x31e70 in sshpam_query (ctx=0x869f0, name=0xefffed9c, info=0xefffed98, 
>    num=0x869e4, prompts=0xefffed94, echo_on=0xefffed90) at auth-pam.c:434
>#4  0x289d8 in send_userauth_info_request (authctxt=0x7fd98)
>    at auth2-chall.c:223
>#5  0x28978 in auth2_challenge_start (authctxt=0x7fd98) at auth2-chall.c:203
>#6  0x288c4 in auth2_challenge (authctxt=0x7fd98, devs=0x8c8c0 "")
>    at auth2-chall.c:168
>#7  0x293dc in userauth_kbdint (authctxt=0x7fd98) at auth2-kbdint.c:50
>#8  0x242c4 in input_userauth_request (type=50, seq=7, ctxt=0x7fd98)
>    at auth2.c:204
>#9  0x42a1c in dispatch_run (mode=0, done=0x7fd98, ctxt=0x7fd98)
>    at dispatch.c:93
>#10 0x23ef4 in do_authentication2 () at auth2.c:101
>#11 0x1cec4 in main (ac=37, av=0xffffffff) at sshd.c:1479
>(gdb) quit
>
>=============================================================================
>
>child:
>[this trace was generated by inserting a sleep(20); line into auth-pam.c
>in pthread_create:
>
>	case 0:
>                sleep(20);
>		thread_start(arg);
>		_exit(1);
>
>and then attaching gdb to the child:
>
># gdb sshd 10250
>GNU gdb 4.18
>Copyright 1998 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 "sparc-sun-solaris2.6"...
>
>/usr/LOCAL/src/openssh-3.7.1p1/10250: No such file or directory.
>Attaching to program `/usr/LOCAL/src/openssh-3.7.1p1/sshd', process 10250    
>Reading symbols from /usr/lib/libpam.so.1...done.
>Reading symbols from /usr/lib/libdl.so.1...done.
>Reading symbols from /usr/lib/libposix4.so.1...done.
>Reading symbols from /usr/lib/libsocket.so.1...done.
>Reading symbols from /usr/lib/libnsl.so.1...done.
>Reading symbols from /usr/local/lib/libcrypto.so.0.9.7...done.
>Reading symbols from /usr/lib/libc.so.1...done.
>Reading symbols from /usr/lib/libaio.so.1...done.
>Reading symbols from /usr/lib/libmp.so.2...done.
>Reading symbols from /usr/platform/SUNW,Ultra-250/lib/libc_psr.so.1...done.
>Reading symbols from /usr/lib/nss_files.so.1...done.
>Reading symbols from /usr/lib/nss_compat.so.1...done.
>Reading symbols from /usr/lib/nss_nis.so.1...done.
>Symbols already loaded for /usr/lib/libpam.so.1
>Symbols already loaded for /usr/lib/libdl.so.1
>Symbols already loaded for /usr/lib/libposix4.so.1
>Symbols already loaded for /usr/lib/libsocket.so.1
>Symbols already loaded for /usr/lib/libnsl.so.1
>Symbols already loaded for /usr/local/lib/libcrypto.so.0.9.7
>Symbols already loaded for /usr/lib/libc.so.1
>Symbols already loaded for /usr/lib/libaio.so.1
>Symbols already loaded for /usr/lib/libmp.so.2
>Symbols already loaded for /usr/platform/SUNW,Ultra-250/lib/libc_psr.so.1
>Symbols already loaded for /usr/lib/nss_files.so.1
>Symbols already loaded for /usr/lib/nss_compat.so.1
>Symbols already loaded for /usr/lib/nss_nis.so.1
>0xef438c44 in _sigsuspend () from /usr/lib/libc.so.1
>(gdb) where
>#0  0xef438c44 in _sigsuspend () from /usr/lib/libc.so.1
>#1  0xef44de0c in _libc_sleep () from /usr/lib/libc.so.1
>#2  0x31628 in pthread_create (thread=0x869f0, attr=0x0, 
>    thread_start=0x31824 <sshpam_thread>, arg=0x869f0) at auth-pam.c:89
>#3  0x31c1c in sshpam_init_ctx (authctxt=0x7fd98) at auth-pam.c:354
>#4  0x28964 in auth2_challenge_start (authctxt=0x7fd98) at auth2-chall.c:199
>#5  0x288c4 in auth2_challenge (authctxt=0x7fd98, devs=0x8c8c0 "")
>    at auth2-chall.c:168
>#6  0x293dc in userauth_kbdint (authctxt=0x7fd98) at auth2-kbdint.c:50
>#7  0x242c4 in input_userauth_request (type=50, seq=7, ctxt=0x7fd98)
>    at auth2.c:204
>#8  0x42a1c in dispatch_run (mode=0, done=0x7fd98, ctxt=0x7fd98)
>    at dispatch.c:93
>#9  0x23ef4 in do_authentication2 () at auth2.c:101
>#10 0x1cec4 in main (ac=37, av=0xffffffff) at sshd.c:1479
>(gdb) where
>#0  0xef438c44 in _sigsuspend () from /usr/lib/libc.so.1
>#1  0xef44de0c in _libc_sleep () from /usr/lib/libc.so.1
>#2  0x31628 in pthread_create (thread=0x869f0, attr=0x0, 
>    thread_start=0x31824 <sshpam_thread>, arg=0x869f0) at auth-pam.c:89
>#3  0x31c1c in sshpam_init_ctx (authctxt=0x7fd98) at auth-pam.c:354
>#4  0x28964 in auth2_challenge_start (authctxt=0x7fd98) at auth2-chall.c:199
>#5  0x288c4 in auth2_challenge (authctxt=0x7fd98, devs=0x8c8c0 "")
>    at auth2-chall.c:168
>#6  0x293dc in userauth_kbdint (authctxt=0x7fd98) at auth2-kbdint.c:50
>#7  0x242c4 in input_userauth_request (type=50, seq=7, ctxt=0x7fd98)
>    at auth2.c:204
>#8  0x42a1c in dispatch_run (mode=0, done=0x7fd98, ctxt=0x7fd98)
>    at dispatch.c:93
>#9  0x23ef4 in do_authentication2 () at auth2.c:101
>#10 0x1cec4 in main (ac=37, av=0xffffffff) at sshd.c:1479
>(gdb) cont
>Continuing.
>
>Program received signal SIGTRAP, Trace/breakpoint trap.
>0xef7c9e38 in ?? ()
>(gdb) where
>#0  0xef7c9e38 in ?? ()
>#1  0xef7cd12c in ?? ()
>#2  0xef7cd278 in ?? ()
>#3  0xef78375c in open_module () from /usr/lib/libpam.so.1
>#4  0xef7832c0 in load_modules () from /usr/lib/libpam.so.1
>#5  0xef7821e8 in pam_authenticate () from /usr/lib/libpam.so.1
>#6  0x318a4 in sshpam_thread (ctxtp=0x77800) at auth-pam.c:219
>#7  0x31630 in pthread_create (thread=0x869f0, attr=0x0, 
>    thread_start=0x31824 <sshpam_thread>, arg=0x869f0) at auth-pam.c:90
>#8  0x31c1c in sshpam_init_ctx (authctxt=0x7fd98) at auth-pam.c:354
>#9  0x28964 in auth2_challenge_start (authctxt=0x7fd98) at auth2-chall.c:199
>#10 0x288c4 in auth2_challenge (authctxt=0x7fd98, devs=0x8c8c0 "")
>    at auth2-chall.c:168
>#11 0x293dc in userauth_kbdint (authctxt=0x7fd98) at auth2-kbdint.c:50
>#12 0x242c4 in input_userauth_request (type=50, seq=7, ctxt=0x7fd98)
>    at auth2.c:204
>#13 0x42a1c in dispatch_run (mode=0, done=0x7fd98, ctxt=0x7fd98)
>    at dispatch.c:93
>#14 0x23ef4 in do_authentication2 () at auth2.c:101
>#15 0x1cec4 in main (ac=37, av=0xffffffff) at sshd.c:1479
>(gdb) up 6
>#6  0x318a4 in sshpam_thread (ctxtp=0x77800) at auth-pam.c:219
>219		sshpam_err = pam_authenticate(sshpam_handle, 0);
>(gdb) p sshpam_handle
>$1 = (pam_handle_t *) 0x89db0
>(gdb) p pam_user
>$2 = 0x7c100 "siegert"
>(gdb) quit
>The program is running.  Quit anyway (and detach it)? (y or n) y
>Detaching from program: /usr/LOCAL/src/openssh-3.7.1p1/sshd LWP    1

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Attachments on bug 687: 431 | 495