[Crash-utility] [PATCH] Add format string to *printf call

Dave Anderson anderson at redhat.com
Thu Jul 11 18:26:46 UTC 2013





----- Original Message -----
> This patch came from the Ubuntu crash maintainer Stefan Bader. Debian
> and Ubuntu both build by default with Werror and the -Wformat-security
> option which catches printf and scanf functions where the format
> string is not a string literal and there are no format arguments
> specified. This patch resolves the issue by explicitly adding the "%s"
> format string.

Looks reasonable.

 $ lsdiff fprintf.patch
 crash-7.0.1/cmdline.c
 crash-7.0.1/dev.c
 crash-7.0.1/filesys.c
 crash-7.0.1/kernel.c
 crash-7.0.1/lkcd_common.c
 crash-7.0.1/memory.c
 crash-7.0.1/netdump.c
 crash-7.0.1/symbols.c
 crash-7.0.1/task.c
 crash-7.0.1/tools.c
 crash-7.0.1/va_server.c
 crash-7.0.1/x86_64.c
 crash-7.0.1/xendump.c
 $

Did you vet the other 9 architecture-specific files besides x86_64.c?

Dave
 
> 
> 
> Signed-off-by: Troy Heber <troyh at debian.org>
> Signed-off-by: Stefan Bader <stefan.bader at canonical.com>
> ---
> 
> Index: crash-7.0.1/cmdline.c
> ===================================================================
> --- crash-7.0.1.orig/cmdline.c	2013-07-11 14:34:38.085318626 +0200
> +++ crash-7.0.1/cmdline.c	2013-07-11 14:52:44.598630317 +0200
> @@ -62,7 +62,7 @@ process_command_line(void)
>  
>  	if (!(pc->flags &
>  	    (READLINE|SILENT|CMDLINE_IFILE|RCHOME_IFILE|RCLOCAL_IFILE)))
> -		fprintf(fp, pc->prompt);
> +		fprintf(fp, "%s", pc->prompt);
>  	fflush(fp);
>  
>  	/*
> Index: crash-7.0.1/dev.c
> ===================================================================
> --- crash-7.0.1.orig/dev.c	2013-07-11 14:34:38.173319055 +0200
> +++ crash-7.0.1/dev.c	2013-07-11 14:52:44.602630336 +0200
> @@ -224,8 +224,9 @@ char_device_struct:
>  		switch (name_typecode)
>  		{
>  		case TYPE_CODE_ARRAY:
> -			snprintf(buf, name_size, char_device_struct_buf +
> -			    OFFSET(char_device_struct_name));
> +			snprintf(buf, name_size, "%s",
> +				 char_device_struct_buf +
> +				 OFFSET(char_device_struct_name));
>  			break;
>  		case TYPE_CODE_PTR:
>  		default:
> @@ -294,8 +295,9 @@ char_device_struct:
>  			switch (name_typecode)
>  			{
>  			case TYPE_CODE_ARRAY:
> -				snprintf(buf, name_size, char_device_struct_buf +
> -			    		OFFSET(char_device_struct_name));
> +				snprintf(buf, name_size, "%s",
> +					 char_device_struct_buf +
> +					 OFFSET(char_device_struct_name));
>  				break;
>  			case TYPE_CODE_PTR:
>  			default:
> Index: crash-7.0.1/filesys.c
> ===================================================================
> --- crash-7.0.1.orig/filesys.c	2013-07-11 14:34:38.137318875 +0200
> +++ crash-7.0.1/filesys.c	2013-07-11 14:52:44.606630363 +0200
> @@ -1290,10 +1290,10 @@ cmd_mount(void)
>  						namespace_context);
>  				} else {
>  					if (!(pc->curcmd_flags & HEADER_PRINTED)) {
> -						fprintf(fp, mount_hdr);
> +						fprintf(fp, "%s", mount_hdr);
>  						pc->curcmd_flags |= HEADER_PRINTED;
>  					}
> -					fprintf(fp, buf2);
> +					fprintf(fp, "%s", buf2);
>  				}
>  				found = FALSE;
>  				fp = pc->tmpfile;
> @@ -1420,7 +1420,7 @@ show_mounts(ulong one_vfsmount, int flag
>  		sbp = ULONG(vfsmount_buf + OFFSET(vfsmount_mnt_sb));
>  
>  		if (flags)
> -			fprintf(fp, mount_hdr);
> +			fprintf(fp, "%s", mount_hdr);
>                  fprintf(fp, "%s %s ",
>  			mkstring(buf1, VADDR_PRLEN, RJUST|LONG_HEX,
>  			MKSTR(*vfsmnt)),
> @@ -1449,7 +1449,7 @@ show_mounts(ulong one_vfsmount, int flag
>  		sprintf(buf1, "%s%s", buf3, buf4);
>  		while ((strlen(buf1) > 17) && (buf1[strlen(buf1)-2] == ' '))
>  			strip_ending_char(buf1, ' ');
> -		fprintf(fp, buf1);
> +		fprintf(fp, "%s", buf1);
>  
>  		if (VALID_MEMBER(vfsmount_mnt_dirname)) {
>                  	if (read_string(dirp, buf1, BUFSIZE-1))
> @@ -1486,7 +1486,7 @@ show_mounts(ulong one_vfsmount, int flag
>  					fprintf(fp, "%s\n",
>                                              mkstring(buf2, VADDR_PRLEN,
>                                                  CENTER, "OPEN FILES"));
> -					fprintf(fp, mount_files_header);
> +					fprintf(fp, "%s", mount_files_header);
>  					files_header_printed = 1;
>  				}
>  				file_dump(0, *dp, inode, 0, DUMP_DENTRY_ONLY);
> @@ -2221,14 +2221,14 @@ cmd_files(void)
>  #define PRINT_FILE_REFERENCE()                  \
>  	if (!root_pwd_printed) {                \
>          	print_task_header(fp, tc, 0);   \
> -                fprintf(fp, root_pwd);          \
> +                fprintf(fp, "%s", root_pwd);    \
>  		root_pwd_printed = TRUE;        \
>  	}                                       \
>  	if (!header_printed) {                  \
> -		fprintf(fp, files_header);      \
> +		fprintf(fp, "%s", files_header);\
>                  header_printed = TRUE;          \
>  	}                                       \
> -	fprintf(fp, buf4);                      \
> +	fprintf(fp, "%s", buf4);                \
>  	ref->cmdflags |= FILES_REF_FOUND;
>  
>  #define FILENAME_COMPONENT(P,C) \
> @@ -2506,7 +2506,7 @@ open_files_dump(ulong task, int flags, s
>  				}
>  				else if (file) {
>  					if (!header_printed) {
> -						fprintf(fp, files_header);
> +						fprintf(fp, "%s", files_header);
>  						header_printed = 1;
>  					}
>  					file_dump(file, 0, 0, i,
> @@ -3238,7 +3238,7 @@ cmd_fuser(void)
>  				if (!STREQ(uses, "")) {
>  					if (!fuser_header_printed) {
>  						fprintf(pc->saved_fp,
> -							fuser_header);
> +							"%s", fuser_header);
>  						fuser_header_printed = 1;
>  					}
>  					show_fuser(task_buf, uses);
> @@ -3294,7 +3294,7 @@ cmd_fuser(void)
>  		}
>  		if (!STREQ(uses, "")) {
>  			if (!fuser_header_printed) {
> -				fprintf(pc->saved_fp, fuser_header);
> +				fprintf(pc->saved_fp, "%s", fuser_header);
>  				fuser_header_printed = 1;
>  			}
>  			show_fuser(task_buf, uses);
> Index: crash-7.0.1/kernel.c
> ===================================================================
> --- crash-7.0.1.orig/kernel.c	2013-07-11 14:34:38.061318503 +0200
> +++ crash-7.0.1/kernel.c	2013-07-11 14:52:44.614630390 +0200
> @@ -1000,7 +1000,7 @@ bad_match:
>  	if (REMOTE())
>  		sprintf(buf, "%s:%s", pc->server, pc->server_memsrc);
>  	else
> -		sprintf(buf, ACTIVE() ? pc->live_memsrc : pc->dumpfile);
> +		sprintf(buf, "%s", ACTIVE() ? pc->live_memsrc : pc->dumpfile);
>  
>  	error(INFO, "%s and %s do not match!\n",
>  		pc->system_map ? pc->system_map :
> @@ -1262,7 +1262,7 @@ verify_namelist()
>          if (REMOTE())
>                  sprintf(buffer, "%s:%s", pc->server, pc->server_memsrc);
>          else
> -                sprintf(buffer, ACTIVE() ? "live system" : pc->dumpfile);
> +                sprintf(buffer, "%s", ACTIVE() ? "live system" :
> pc->dumpfile);
>  
>  	sprintf(buffer2, " %s is %s -- %s is %s\n",
>                  namelist, namelist_smp ? "SMP" : "not SMP",
> @@ -4381,13 +4381,13 @@ dump_log_entry(char *logptr, int msg_fla
>  		rem = (ulonglong)ts_nsec % (ulonglong)1000000000;
>  		sprintf(buf, "[%5lld.%06ld] ", nanos, rem/1000);
>  		ilen = strlen(buf);
> -		fprintf(fp, buf);
> +		fprintf(fp, "%s", buf);
>  	}
>  
>  	if (msg_flags & SHOW_LOG_LEVEL) {
>  		sprintf(buf, "<%x>", level);
>  		ilen += strlen(buf);
> -		fprintf(fp, buf);
> +		fprintf(fp, "%s", buf);
>  	}
>  
>  	for (i = 0, p = msg; i < text_len; i++, p++) {
> @@ -4901,7 +4901,7 @@ dump_sys_call_table(char *spec, int cnt)
>  	if (spec)
>  		open_tmpfile();
>  
> -	fprintf(fp, sys_call_hdr);
> +	fprintf(fp, "%s", sys_call_hdr);
>  
>          for (i = 0, sct = sys_call_table; i < NR_syscalls; i++, sct++) {
>                  if (!(scp = value_symbol(*sct))) {
> Index: crash-7.0.1/lkcd_common.c
> ===================================================================
> --- crash-7.0.1.orig/lkcd_common.c	2013-07-11 14:34:38.189319133 +0200
> +++ crash-7.0.1/lkcd_common.c	2013-07-11 14:52:44.618630409 +0200
> @@ -1325,7 +1325,7 @@ lkcd_print(char *fmt, ...)
>          va_end(ap);
>  
>  	if (lkcd->fp)
> -		fprintf(lkcd->fp, buf);
> +		fprintf(lkcd->fp, "%s", buf);
>  	else
>  		console(buf);
>  }
> Index: crash-7.0.1/memory.c
> ===================================================================
> --- crash-7.0.1.orig/memory.c	2013-07-11 14:34:37.997318190 +0200
> +++ crash-7.0.1/memory.c	2013-07-11 14:53:07.942744447 +0200
> @@ -3608,7 +3608,7 @@ vm_area_dump(ulong task, ulong flag, ulo
>  
>  	if (!(flag & (PHYSADDR|VERIFY_ADDR|PRINT_VMA_STRUCTS|PRINT_SINGLE_VMA)) &&
>  	    !DO_REF_SEARCH(ref))
> -		fprintf(fp, vma_header);
> +		fprintf(fp, "%s", vma_header);
>  
>  	for (found = FALSE; vma; vma = vm_next) {
>  
> @@ -3868,7 +3868,7 @@ vm_area_page_dump(ulong vma,
>  		}
>  
>  		if (display)
> -			fprintf(fp, buf3);
> +			fprintf(fp, "%s", buf3);
>  
>  		start += PAGESIZE();
>  	}
> @@ -5725,7 +5725,7 @@ dump_page_hash_table(struct meminfo *hi)
>  		close_tmpfile();
>  
>  		if (found) {
> -			fprintf(fp, hash_table);
> +			fprintf(fp, "%s", hash_table);
>  			fprintf(fp, "%lx\n", searchpage);
>  			hi->retval = TRUE;
>  		}
> @@ -5829,7 +5829,7 @@ dump_free_pages(struct meminfo *fi)
>  		open_tmpfile();
>  
>  	if (!verbose)
> -		fprintf(fp, free_area_hdr1);
> +		fprintf(fp, "%s", free_area_hdr1);
>  
>         	hq_open();
>  	for (i = 0; i < nr_mem_lists; i++) {
> @@ -5838,7 +5838,7 @@ dump_free_pages(struct meminfo *fi)
>  		chunk_size = power(2, i);
>  
>  		if (verbose)
> -			fprintf(fp, free_area_hdr2);
> +			fprintf(fp, "%s", free_area_hdr2);
>  
>  		fprintf(fp, "%3d  ", i);
>  		sprintf(buf, "%ldk", (chunk_size * PAGESIZE())/1024);
> @@ -5924,8 +5924,8 @@ dump_free_pages(struct meminfo *fi)
>  	if (found) {
>  		order--;
>  
> -		fprintf(fp, last_free_hdr);
> -		fprintf(fp, last_free);
> +		fprintf(fp, "%s", last_free_hdr);
> +		fprintf(fp, "%s", last_free);
>  		fprintf(fp, "%lx  ", this_addr);
>  		if (order) {
>                  	switch (fi->memtype)
> @@ -6039,12 +6039,12 @@ dump_multidimensional_free_pages(struct
>          hq_open();
>          for (i = sum = found = 0; i < dimension; i++) {
>          	if (!verbose)
> -                	fprintf(fp, free_area_hdr5);
> +                	fprintf(fp, "%s", free_area_hdr5);
>                 	pp = (ulong *)(free_area_buf +
>  			((SIZE(free_area_struct)*nr_mem_lists)*i));
>  		for (j = 0; j < nr_mem_lists; j++) {
>                          if (verbose)
> -                                fprintf(fp, free_area_hdr6);
> +                                fprintf(fp, "%s", free_area_hdr6);
>  
>  			sprintf(buf, "[%d][%d]", i, j);
>  			fprintf(fp, "%7s  ", buf);
> @@ -6137,7 +6137,7 @@ dump_multidimensional_free_pages(struct
>  	close_tmpfile();
>  
>  	if (found) {
> -		fprintf(fp, last_area_hdr);
> +		fprintf(fp, "%s", last_area_hdr);
>  		fprintf(fp, "%s\n", last_area);
>  		fprintf(fp, "%lx  ", this_addr);
>                  if (order) {
> @@ -6433,7 +6433,7 @@ dump_free_pages_zones_v1(struct meminfo
>                          zone_hdr,
>                          mkstring(buf1, VADDR_PRLEN, CENTER|LJUST,
>                          "MEM_MAP"));
>  		fprintf(fp, "%s\n", last_zone);
> -		fprintf(fp, last_area_hdr);
> +		fprintf(fp, "%s", last_area_hdr);
>  		fprintf(fp, "%s\n", last_area);
>  		fprintf(fp, "%lx  ", this_addr);
>                  if (order) {
> @@ -6758,7 +6758,7 @@ dump_free_pages_zones_v2(struct meminfo
>                          zone_hdr,
>                          mkstring(buf1, VADDR_PRLEN, CENTER|LJUST,
>                          "MEM_MAP"));
>  		fprintf(fp, "%s\n", last_zone);
> -		fprintf(fp, last_area_hdr);
> +		fprintf(fp, "%s", last_area_hdr);
>  		fprintf(fp, "%s\n", last_area);
>  		fprintf(fp, "%lx  ", this_addr);
>                  if (order) {
> @@ -6924,7 +6924,7 @@ dump_zone_free_area(ulong free_area, int
>  	ld = &list_data;
>  
>  	if (!verbose)
> -		fprintf(fp, free_area_hdr4);
> +		fprintf(fp, "%s", free_area_hdr4);
>  
>  	total_free = 0;
>  	flen = MAX(VADDR_PRLEN, strlen("FREE_AREA_STRUCT"));
> @@ -6935,7 +6935,7 @@ dump_zone_free_area(ulong free_area, int
>  	for (i = 0; i < num; i++,
>  	     free_area += SIZE_OPTION(free_area_struct, free_area)) {
>  		if (verbose)
> -			fprintf(fp, free_area_hdr3);
> +			fprintf(fp, "%s", free_area_hdr3);
>  		fprintf(fp, "%3d ", i);
>  		chunk_size = power(2, i);
>  		sprintf(buf, "%ldk", (chunk_size * PAGESIZE())/1024);
> @@ -6999,7 +6999,7 @@ multiple_lists:
>  		     j++, free_list += SIZE(list_head)) {
>  
>  			if (verbose)
> -				fprintf(fp, free_area_hdr3);
> +				fprintf(fp, "%s", free_area_hdr3);
>  
>  			fprintf(fp, "%3d ", i);
>  			chunk_size = power(2, i);
> @@ -7109,7 +7109,7 @@ dump_kmeminfo(void)
>  		}
>  	}
>  
> -	fprintf(fp, kmeminfo_hdr);
> +	fprintf(fp, "%s", kmeminfo_hdr);
>  	/*
>  	 *  Get total RAM based upon how the various versions of si_meminfo()
>           *  have done it, latest to earliest:
> @@ -8697,7 +8697,7 @@ dump_kmem_cache(struct meminfo *si)
>  
>  	if ((!(si->flags & VERBOSE) || si->reqname) &&
>  	     !(si->flags & (ADDRESS_SPECIFIED|GET_SLAB_PAGES)))
> -		fprintf(fp, kmem_cache_hdr);
> +		fprintf(fp, "%s", kmem_cache_hdr);
>  
>  	si->addrlist = (ulong *)GETBUF((vt->kmem_max_c_num+1) * sizeof(ulong));
>  	cnt = 0;
> @@ -8804,9 +8804,9 @@ dump_kmem_cache(struct meminfo *si)
>  				do_slab_chain(SLAB_WALKTHROUGH, si);
>  
>  				if (si->found) {
> -					fprintf(fp, kmem_cache_hdr);
> +					fprintf(fp, "%s", kmem_cache_hdr);
>  					DUMP_KMEM_CACHE_INFO_V1();
> -					fprintf(fp, slab_hdr);
> +					fprintf(fp, "%s", slab_hdr);
>  					DUMP_SLAB_INFO();
>  
>  					switch (si->found)
> @@ -8833,14 +8833,16 @@ dump_kmem_cache(struct meminfo *si)
>  						break;
>  						
>  					case KMEM_OBJECT_ADDR_FREE:
> -                                                fprintf(fp, free_inuse_hdr);
> +                                                fprintf(fp, "%s",
> +							free_inuse_hdr);
>  						fprintf(fp, "   %lx\n",
>  							si->container ? si->container :
>                                                          (ulong)si->spec_addr);
>  						break;
>  
>                                          case KMEM_OBJECT_ADDR_INUSE:
> -                                                fprintf(fp, free_inuse_hdr);
> +                                                fprintf(fp, "%s",
> +							free_inuse_hdr);
>                                                  fprintf(fp, "  [%lx]\n",
>  							si->container ? si->container :
>                                                          (ulong)si->spec_addr);
> @@ -8903,7 +8905,7 @@ dump_kmem_cache_percpu_v1(struct meminfo
>  
>  	if ((!(si->flags & VERBOSE) || si->reqname) &&
>  	     !(si->flags & (ADDRESS_SPECIFIED|GET_SLAB_PAGES)))
> -		fprintf(fp, kmem_cache_hdr);
> +		fprintf(fp, "%s", kmem_cache_hdr);
>  
>  	si->addrlist = (ulong *)GETBUF((vt->kmem_max_c_num+1) * sizeof(ulong));
>  	si->kmem_bufctl = (int *)GETBUF((vt->kmem_max_c_num+1) * sizeof(int));
> @@ -9018,9 +9020,9 @@ dump_kmem_cache_percpu_v1(struct meminfo
>  			do_slab_chain_percpu_v1(SLAB_WALKTHROUGH, si);
>  
>  			if (si->found) {
> -				fprintf(fp, kmem_cache_hdr);
> +				fprintf(fp, "%s", kmem_cache_hdr);
>  				DUMP_KMEM_CACHE_INFO_V1();
> -				fprintf(fp, slab_hdr);
> +				fprintf(fp, "%s", slab_hdr);
>          			gather_slab_cached_count(si);
>  				DUMP_SLAB_INFO();
>  
> @@ -9045,21 +9047,21 @@ dump_kmem_cache_percpu_v1(struct meminfo
>  					break;
>  						
>  				case KMEM_OBJECT_ADDR_FREE:
> -                                        fprintf(fp, free_inuse_hdr);
> +                                        fprintf(fp, "%s", free_inuse_hdr);
>  					fprintf(fp, "   %lx\n",
>  						si->container ? si->container :
>  						(ulong)si->spec_addr);
>  					break;
>  
>                                  case KMEM_OBJECT_ADDR_INUSE:
> -                                        fprintf(fp, free_inuse_hdr);
> +                                        fprintf(fp, "%s", free_inuse_hdr);
>  					fprintf(fp, "  [%lx]\n",
>  						si->container ? si->container :
>  						(ulong)si->spec_addr);
>                                          break;
>  
>                                  case KMEM_OBJECT_ADDR_CACHED:
> -                                        fprintf(fp, free_inuse_hdr);
> +                                        fprintf(fp, "%s", free_inuse_hdr);
>                                          fprintf(fp,
>  					    "   %lx  (cpu %d cache)\n",
>  						si->container ? si->container :
> @@ -9123,7 +9125,7 @@ dump_kmem_cache_percpu_v2(struct meminfo
>  
>  	if ((!(si->flags & VERBOSE) || si->reqname) &&
>  	     !(si->flags & (ADDRESS_SPECIFIED|GET_SLAB_PAGES)))
> -		fprintf(fp, kmem_cache_hdr);
> +		fprintf(fp, "%s", kmem_cache_hdr);
>  
>  	si->addrlist = (ulong *)GETBUF((vt->kmem_max_c_num+1) * sizeof(ulong));
>  	si->kmem_bufctl = (int *)GETBUF((vt->kmem_max_c_num+1) * sizeof(int));
> @@ -9262,9 +9264,9 @@ dump_kmem_cache_percpu_v2(struct meminfo
>  				do_slab_chain_percpu_v2(SLAB_WALKTHROUGH, si);
>  
>  			if (si->found) {
> -				fprintf(fp, kmem_cache_hdr);
> +				fprintf(fp, "%s", kmem_cache_hdr);
>  				DUMP_KMEM_CACHE_INFO_V2();
> -				fprintf(fp, slab_hdr);
> +				fprintf(fp, "%s", slab_hdr);
>          			gather_slab_cached_count(si);
>  				DUMP_SLAB_INFO();
>  
> @@ -9289,21 +9291,21 @@ dump_kmem_cache_percpu_v2(struct meminfo
>  					break;
>  						
>  				case KMEM_OBJECT_ADDR_FREE:
> -                                        fprintf(fp, free_inuse_hdr);
> +                                        fprintf(fp, "%s", free_inuse_hdr);
>  					fprintf(fp, "   %lx\n",
>  						si->container ? si->container :
>  						(ulong)si->spec_addr);
>  					break;
>  
>                                  case KMEM_OBJECT_ADDR_INUSE:
> -                                        fprintf(fp, free_inuse_hdr);
> +                                        fprintf(fp, "%s", free_inuse_hdr);
>                                          fprintf(fp, "  [%lx]\n",
>  						si->container ? si->container :
>  						(ulong)si->spec_addr);
>                                          break;
>  
>                                  case KMEM_OBJECT_ADDR_CACHED:
> -                                        fprintf(fp, free_inuse_hdr);
> +                                        fprintf(fp, "%s", free_inuse_hdr);
>                                          fprintf(fp,
>  					    "   %lx  (cpu %d cache)\n",
>  						si->container ? si->container :
> @@ -9311,7 +9313,7 @@ dump_kmem_cache_percpu_v2(struct meminfo
>                                          break;
>  
>                                  case KMEM_OBJECT_ADDR_SHARED:
> -                                        fprintf(fp, free_inuse_hdr);
> +                                        fprintf(fp, "%s", free_inuse_hdr);
>                                          fprintf(fp,
>                                              "   %lx  (shared cache)\n",
>  						si->container ? si->container :
> @@ -10422,7 +10424,7 @@ dump_slab(struct meminfo *si)
>  	si->s_index = ULONG_PTR(si->slab_buf + OFFSET(kmem_slab_s_s_index));
>  
>  	if (!(si->flags & ADDRESS_SPECIFIED)) {
> -		fprintf(fp, slab_hdr);
> +		fprintf(fp, "%s", slab_hdr);
>  		DUMP_SLAB_INFO();
>  	}
>  
> @@ -10474,7 +10476,7 @@ dump_slab_percpu_v1(struct meminfo *si)
>  	gather_slab_cached_count(si);
>  
>  	if (!(si->flags & ADDRESS_SPECIFIED)) {
> -		fprintf(fp, slab_hdr);
> +		fprintf(fp, "%s", slab_hdr);
>  		DUMP_SLAB_INFO();
>  	}
>  
> @@ -10526,7 +10528,7 @@ dump_slab_percpu_v2(struct meminfo *si)
>  	gather_slab_cached_count(si);
>  
>  	if (!(si->flags & ADDRESS_SPECIFIED)) {
> -		fprintf(fp, slab_hdr);
> +		fprintf(fp, "%s", slab_hdr);
>  		DUMP_SLAB_INFO();
>  	}
>  
> @@ -10774,7 +10776,7 @@ dump_slab_objects(struct meminfo *si)
>                  }
>  
>          if (!(si->flags & ADDRESS_SPECIFIED))
> -		fprintf(fp, free_inuse_hdr);
> +		fprintf(fp, "%s", free_inuse_hdr);
>  
>          /* For on-slab bufctls, c_offset is the distance between the start
>          of
>           * an obj and its related bufctl.  For off-slab bufctls, c_offset is
> @@ -10850,7 +10852,7 @@ dump_slab_objects_percpu(struct meminfo
>                  }
>  
>          if (!(si->flags & ADDRESS_SPECIFIED))
> -		fprintf(fp, free_inuse_hdr);
> +		fprintf(fp, "%s", free_inuse_hdr);
>  
>  	for (i = 0, obj = si->s_mem; i < si->c_num; i++, obj += si->size) {
>  		on_free_list = FALSE;
> @@ -13494,7 +13496,7 @@ dump_swap_info(ulong swapflags, ulong *t
>  	swap_info = symbol_value("swap_info");
>  
>  	if (swapflags & VERBOSE)
> -		fprintf(fp, swap_info_hdr);
> +		fprintf(fp, "%s", swap_info_hdr);
>  
>  	totalswap = totalused = 0;
>  
> @@ -15948,7 +15950,7 @@ dump_kmem_cache_slub(struct meminfo *si)
>  
>  	if (!si->reqname &&
>  	     !(si->flags & (ADDRESS_SPECIFIED|GET_SLAB_PAGES)))
> -		fprintf(fp, kmem_cache_hdr);
> +		fprintf(fp, "%s", kmem_cache_hdr);
>  
>  	if (si->flags & ADDRESS_SPECIFIED) {
>  		if ((p1 = is_slab_page(si, kbuf))) {
> @@ -15983,7 +15985,7 @@ dump_kmem_cache_slub(struct meminfo *si)
>  		if (reqname) {
>  			if (!STREQ(reqname, buf))
>  				continue;
> -			fprintf(fp, kmem_cache_hdr);
> +			fprintf(fp, "%s", kmem_cache_hdr);
>  		}
>  		if (ignore_cache(si, buf)) {
>  			fprintf(fp, "%lx %-18s [IGNORED]\n",
> @@ -16027,7 +16029,7 @@ dump_kmem_cache_slub(struct meminfo *si)
>  		} else if (si->flags & VERBOSE) {
>  			do_kmem_cache_slub(si);
>  			if (!reqname && ((i+1) < si->cache_count))
> -				fprintf(fp, kmem_cache_hdr);
> +				fprintf(fp, "%s", kmem_cache_hdr);
>  		}
>  
>  next_cache:
> Index: crash-7.0.1/netdump.c
> ===================================================================
> --- crash-7.0.1.orig/netdump.c	2013-07-11 14:34:38.041318408 +0200
> +++ crash-7.0.1/netdump.c	2013-07-11 14:52:44.634630494 +0200
> @@ -691,7 +691,7 @@ netdump_print(char *fmt, ...)
>          va_end(ap);
>  
>          if (nd->ofp)
> -                fprintf(nd->ofp, buf);
> +                fprintf(nd->ofp, "%s", buf);
>          else
>                  console(buf);
>  }
> Index: crash-7.0.1/symbols.c
> ===================================================================
> --- crash-7.0.1.orig/symbols.c	2013-07-11 14:34:38.153318953 +0200
> +++ crash-7.0.1/symbols.c	2013-07-11 14:53:30.506854746 +0200
> @@ -5691,7 +5691,7 @@ dereference_pointer(ulong addr, struct d
>  				}
>  			}
>  			p1 = strstr(buf1, "=");
> -			fprintf(pc->saved_fp, p1+2);
> +			fprintf(pc->saved_fp, "%s", p1+2);
>  		} else
>  			fprintf(pc->saved_fp, "     %s", buf1);
>  	}
> @@ -6042,7 +6042,7 @@ do_datatype_declaration(struct datatype_
>  				if ((flags & SHOW_OFFSET) && whitespace(buf[0]))
>  					show_member_offset(sfp, dm, buf);
>  				else
> -                                        fprintf(sfp, buf);
> +                                        fprintf(sfp, "%s", buf);
>  			}
>  		}
>          }
> @@ -6295,7 +6295,7 @@ gdb_whatis(char *s)
>  		p1 = buf;
>  		if (STRNEQ(buf, "type = "))
>  			p1 += strlen("type = ");
> -		fprintf(pc->saved_fp, p1);
> +		fprintf(pc->saved_fp, "%s", p1);
>          }
>  
>  	close_tmpfile();
> @@ -6453,7 +6453,7 @@ cmd_p(void)
>  		int firstline;
>  
>  		if (leader) {
> -			fprintf(pc->saved_fp, buf2);
> +			fprintf(pc->saved_fp, "%s", buf2);
>  			fflush(pc->saved_fp);
>  		}
>  
> @@ -6464,7 +6464,7 @@ cmd_p(void)
>  			    (p1 = strstr(buf1, "{")) &&
>  			    !STRNEQ(p1, "{\n")) {
>  				*p1 = NULLCHAR;
> -				fprintf(pc->saved_fp, buf1);
> +				fprintf(pc->saved_fp, "%s", buf1);
>  				fprintf(pc->saved_fp, "\n {");
>  				print_verbatim(pc->saved_fp, p1+1);
>  			} else
> @@ -7110,7 +7110,7 @@ show_member_offset(FILE *ofp, struct dat
>  		sprintf(buf1, *gdb_output_radix == 10 ?  "  [%ld]" : "  [0x%lx]", offset);
>  	sprintf(fmt, "%c%ds", '%', len);
>  	fprintf(ofp, fmt, buf1);
> -	fprintf(ofp, &inbuf[3]);
> +	fprintf(ofp, "%s", &inbuf[3]);
>  
>  	return TRUE;
>  
> @@ -9347,7 +9347,7 @@ dump_offset_table(char *spec, ulong make
>  				    strstr(buf, " offset_table:"))
>  					break;
>  		
> -				fprintf(pc->saved_fp, buf);
> +				fprintf(pc->saved_fp, "%s", buf);
>  			}
>  		}
>  		close_tmpfile();
> Index: crash-7.0.1/task.c
> ===================================================================
> --- crash-7.0.1.orig/task.c	2013-07-11 14:34:38.209319226 +0200
> +++ crash-7.0.1/task.c	2013-07-11 14:52:44.654630595 +0200
> @@ -2727,7 +2727,7 @@ task_struct_member(struct task_context *
>  				print_task_header(pc->saved_fp, tc, 0);
>  				header_printed = TRUE;
>  			}
> -			fprintf(pc->saved_fp, buf);
> +			fprintf(pc->saved_fp, "%s", buf);
>  			if (STRNEQ(buf, lookfor2))
>  				BZERO(lookfor2, BUFSIZE);
>  			continue;
> @@ -2738,7 +2738,7 @@ task_struct_member(struct task_context *
>                                  print_task_header(pc->saved_fp, tc, 0);
>                                  header_printed = TRUE;
>                          }
> -			fprintf(pc->saved_fp, buf);
> +			fprintf(pc->saved_fp, "%s", buf);
>  			if (strstr(buf, lookfor3))
>  				BZERO(lookfor3, BUFSIZE);
>  			continue;
> @@ -2754,7 +2754,7 @@ task_struct_member(struct task_context *
>                                  	print_task_header(pc->saved_fp, tc, 0);
>                                  	header_printed = TRUE;
>                          	}
> -				fprintf(pc->saved_fp, buf);
> +				fprintf(pc->saved_fp, "%s", buf);
>                          	if (strstr(buf, "{{\n"))
>                                  	sprintf(lookfor2, "    }},");
>                          	else if (strstr(buf, "{\n"))
> @@ -3447,16 +3447,18 @@ task_pointer_string(struct task_context
>  		}
>  
>  		if (bt->stkptr)
> -			sprintf(buf, mkstring(buf1, VADDR_PRLEN,
> -				CENTER|RJUST|LONG_HEX,
> -                        	MKSTR(bt->stkptr)));
> +			sprintf(buf, "%s",
> +				mkstring(buf1, VADDR_PRLEN,
> +					 CENTER|RJUST|LONG_HEX,
> +					 MKSTR(bt->stkptr)));
>  		else
>  			sprintf(buf, "%s",
>  			    mkstring(buf1, VADDR_PRLEN, CENTER|RJUST, "--"));
>  	} else
> -		sprintf(buf, mkstring(buf1, VADDR_PRLEN,
> -			CENTER|RJUST|LONG_HEX,
> -			MKSTR(tc->task)));
> +		sprintf(buf, "%s",
> +			mkstring(buf1, VADDR_PRLEN,
> +				 CENTER|RJUST|LONG_HEX,
> +				 MKSTR(tc->task)));
>  
>  	return buf;
>  }
> @@ -8612,7 +8614,7 @@ translate_sigset(ulonglong sigset)
>  			}
>  
>  			len += strlen(buf);
> -			fprintf(fp, buf);
> +			fprintf(fp, "%s", buf);
>  		}
>  
>  		sigset >>= 1;
> Index: crash-7.0.1/tools.c
> ===================================================================
> --- crash-7.0.1.orig/tools.c	2013-07-11 14:34:37.937317902 +0200
> +++ crash-7.0.1/tools.c	2013-07-11 14:52:44.658630611 +0200
> @@ -5389,7 +5389,7 @@ please_wait(char *s)
>  	pc->flags |= PLEASE_WAIT;
>  
>          please_wait_len = sprintf(buf, "\rplease wait... (%s)", s);
> -	fprintf(fp, buf);
> +	fprintf(fp, "%s", buf);
>          fflush(fp);
>  }
>  
> Index: crash-7.0.1/va_server.c
> ===================================================================
> --- crash-7.0.1.orig/va_server.c	2013-07-11 14:34:38.017318292 +0200
> +++ crash-7.0.1/va_server.c	2013-07-11 14:52:44.658630611 +0200
> @@ -416,7 +416,7 @@ vas_memory_dump(FILE *fp)
>  	hdr = sizeof(long) == 4 ? memory_dump_hdr_32 : memory_dump_hdr_64;
>  	fmt = sizeof(long) == 4 ? memory_dump_fmt_32 : memory_dump_fmt_64;
>  
> -	fprintf(fp, hdr);
> +	fprintf(fp, "%s", hdr);
>  
>          for (blks = 0, m = vas_map_base->map; m->start_va; m++) {
>  		fprintf(fp, fmt,
> Index: crash-7.0.1/x86_64.c
> ===================================================================
> --- crash-7.0.1.orig/x86_64.c	2013-07-11 14:34:37.957317995 +0200
> +++ crash-7.0.1/x86_64.c	2013-07-11 14:52:44.666630649 +0200
> @@ -4679,7 +4679,7 @@ x86_64_extract_idt_function(ulong *ip, c
>  
>  	value_to_symstr(addr, locbuf, 0);
>  	if (strlen(locbuf))
> -		sprintf(buf, locbuf);
> +		sprintf(buf, "%s", locbuf);
>  	else {
>  		sprintf(buf, "%016lx", addr);
>  		if (kvtop(NULL, addr, &phys, 0)) {
> @@ -4745,7 +4745,7 @@ x86_64_dis_filter(ulong vaddr, char *inb
>  		sprintf(buf1, "0x%lx <%s>\n", value,
>  			value_to_symstr(value, buf2, output_radix));
>  
> -		sprintf(p1, buf1);
> +		sprintf(p1, "%s", buf1);
>  	
>          } else if (STREQ(argv[argc-2], "callq") &&
>              hexadecimal(argv[argc-1], 0)) {
> @@ -4763,7 +4763,7 @@ x86_64_dis_filter(ulong vaddr, char *inb
>                                  value_to_symstr(value, buf2, output_radix));
>                          if (IS_MODULE_VADDR(value) &&
>                              !strstr(buf2, "+"))
> -                                sprintf(p1, buf1);
> +                                sprintf(p1, "%s", buf1);
>                  }
>          }
>  
> @@ -7256,7 +7256,7 @@ x86_64_get_framesize(struct bt_info *bt,
>  		strcpy(buf2, buf);
>  
>  		if (CRASHDEBUG(3))
> -			fprintf(fp, buf2);
> +			fprintf(fp, "%s", buf2);
>  
>  		c = parse_line(buf, arglist);
>  
> Index: crash-7.0.1/xendump.c
> ===================================================================
> --- crash-7.0.1.orig/xendump.c	2013-07-11 14:34:38.105318719 +0200
> +++ crash-7.0.1/xendump.c	2013-07-11 14:52:44.670630676 +0200
> @@ -1974,9 +1974,9 @@ xendump_print(char *fmt, ...)
>          va_end(ap);
>  
>          if (xd->ofp)
> -                fprintf(xd->ofp, buf);
> +                fprintf(xd->ofp, "%s", buf);
>          else if (!XENDUMP_VALID() && CRASHDEBUG(7))
> -		fprintf(stderr, buf);
> +		fprintf(stderr, "%s", buf);
>                  
>  }
>  
> 
> --
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> Crash-utility at redhat.com
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> 




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