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239 lines
6.2 KiB
239 lines
6.2 KiB
commit c5f45d6cdbe7f01314857a75b2feef25b22adaaa
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Author: Dave Anderson <anderson@redhat.com>
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Date: Thu Oct 11 13:28:39 2018 -0400
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Address several Coverity Scan "RESOURCE_LEAK" issues in the following
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top-level source files: cmdline.c, kvmdump.c, lkcd_v8.c, xendump.c,
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symbols.c, unwind_x86_32_64.c, va_server.c and va_server_v1.c.
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(anderson@redhat.com)
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diff --git a/cmdline.c b/cmdline.c
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index c0a9f4f..cf3e150 100644
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--- a/cmdline.c
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+++ b/cmdline.c
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@@ -1318,8 +1318,10 @@ is_shell_script(char *s)
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if ((fd = open(s, O_RDONLY)) < 0)
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return FALSE;
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- if (isatty(fd))
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+ if (isatty(fd)) {
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+ close(fd);
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return FALSE;
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+ }
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if (read(fd, interp, 2) != 2) {
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close(fd);
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diff --git a/kvmdump.c b/kvmdump.c
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index 622619c..4db96bd 100644
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--- a/kvmdump.c
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+++ b/kvmdump.c
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@@ -846,8 +846,10 @@ kvmdump_mapfile_exists(void)
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sprintf(filename, "%s.map", pc->dumpfile);
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- if (!file_exists(filename, &stat) || !S_ISREG(stat.st_mode))
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+ if (!file_exists(filename, &stat) || !S_ISREG(stat.st_mode)) {
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+ free(filename);
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return FALSE;
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+ }
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if (is_kvmdump_mapfile(filename)) {
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pc->kvmdump_mapfile = filename;
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diff --git a/lkcd_v8.c b/lkcd_v8.c
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index 1322250..3b355e0 100644
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--- a/lkcd_v8.c
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+++ b/lkcd_v8.c
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@@ -184,6 +184,7 @@ lkcd_dump_init_v8_arch(dump_header_t *dh)
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memcpy(&dump_header_asm_v8, &arch_hdr, sizeof(dump_header_asm_t));
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+ free(hdr_buf);
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return 0;
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err:
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diff --git a/symbols.c b/symbols.c
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index b54b8c0..fb9cd1b 100644
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--- a/symbols.c
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+++ b/symbols.c
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@@ -3862,12 +3862,10 @@ is_bfd_format(char *filename)
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#else
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struct bfd *bfd;
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#endif
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- char **matching;
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-
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if ((bfd = bfd_openr(filename, NULL)) == NULL)
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return FALSE;
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- if (!bfd_check_format_matches(bfd, bfd_object, &matching)) {
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+ if (!bfd_check_format_matches(bfd, bfd_object, NULL)) {
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bfd_close(bfd);
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return FALSE;
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}
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diff --git a/unwind_x86_32_64.c b/unwind_x86_32_64.c
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index c62f92f..c7c30d6 100644
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--- a/unwind_x86_32_64.c
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+++ b/unwind_x86_32_64.c
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@@ -819,6 +819,7 @@ try_eh_frame:
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error(WARNING, "cannot read %s data from %s\n",
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is_ehframe ? ".eh_frame" : ".debug_frame", pc->namelist);
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free(unwind_table);
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+ close(fd);
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return;
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}
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diff --git a/va_server.c b/va_server.c
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index d96287a..96c2b5c 100644
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--- a/va_server.c
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+++ b/va_server.c
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@@ -313,20 +313,27 @@ int read_map(char *crash_file)
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ret = fseek(vas_file_p, (long)0, SEEK_SET);
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if(ret == -1) {
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printf("va_server: unable to fseek, err = %d\n", ferror(vas_file_p));
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+ free(hdr);
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free(disk_hdr);
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return -1;
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}
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items = fread((void *)disk_hdr, 1, Page_Size, vas_file_p);
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if(items != Page_Size) {
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+ free(hdr);
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+ free(disk_hdr);
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return -1;
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}
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if(disk_hdr->magic[0] != CRASH_MAGIC) {
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+ free(hdr);
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+ free(disk_hdr);
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return -1;
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}
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ret = fseek(vas_file_p, (long)((disk_hdr->map_block) * disk_hdr->blk_size), SEEK_SET);
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if(ret == -1) {
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printf("va_server: unable to fseek, err = %d\n", ferror(vas_file_p));
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+ free(hdr);
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+ free(disk_hdr);
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return -1;
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}
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@@ -338,10 +345,13 @@ int read_map(char *crash_file)
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vas_file_p);
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if(items != disk_hdr->map_blocks) {
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printf("unable to read map entries, err = %d\n", errno);
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+ free(hdr);
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+ free(disk_hdr);
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return -1;
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}
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vas_map_base = hdr;
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+ free(disk_hdr);
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return 0;
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}
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diff --git a/va_server_v1.c b/va_server_v1.c
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index 1924946..88a2a5a 100644
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--- a/va_server_v1.c
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+++ b/va_server_v1.c
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@@ -253,7 +253,7 @@ u_long vas_find_end_v1(void)
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}
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int read_maps_v1(char *crash_file)
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{
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- int *cur_entry_p;
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+ int *cur_entry_p, *cp;
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int ret, items, blk_pos;
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cur_entry_p = (int *)malloc(Page_Size);
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@@ -266,25 +266,32 @@ int read_maps_v1(char *crash_file)
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vas_file_p = fopen(crash_file, "r");
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if(vas_file_p == (FILE *)0) {
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printf("read_maps: bad ret from fopen for %s: %s\n", crash_file, strerror(errno));
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+ free(cur_entry_p);
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return -1;
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}
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ret = fseek(vas_file_p, (long)0, SEEK_SET);
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if(ret == -1) {
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printf("read_maps: unable to fseek in %s, errno = %d\n", crash_file, ferror(vas_file_p));
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+ free(cur_entry_p);
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return -1;
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}
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items = fread((void *)cur_entry_p, 1, Page_Size, vas_file_p);
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if(items != Page_Size) {
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printf("read_maps: unable to read header from %s, errno = %d\n", crash_file, ferror(vas_file_p));
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+ free(cur_entry_p);
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return -1;
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}
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ret = -1;
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- while ((blk_pos = *cur_entry_p++)) {
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- if (read_map_v1(blk_pos))
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+ cp = cur_entry_p;
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+ while ((blk_pos = *cp++)) {
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+ if (read_map_v1(blk_pos)) {
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+ free(cur_entry_p);
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return -1;
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+ }
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ret = 0;
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}
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+ free(cur_entry_p);
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return ret;
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}
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@@ -308,21 +315,28 @@ int read_map_v1(int blk_pos)
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ret = fseek(vas_file_p, (long)(blk_pos*Page_Size), SEEK_SET);
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if(ret == -1) {
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console("va_server: unable to fseek, err = %d\n", ferror(vas_file_p));
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+ free(hdr);
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free(disk_hdr);
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return -1;
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}
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items = fread((void *)disk_hdr, 1, Page_Size, vas_file_p);
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if(items != Page_Size) {
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+ free(hdr);
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+ free(disk_hdr);
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return -1;
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}
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if(disk_hdr->magic[0] != CRASH_MAGIC) {
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console("va_server: bad magic 0x%lx\n", disk_hdr->magic[0]);
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+ free(hdr);
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+ free(disk_hdr);
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return -1;
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}
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ret = fseek(vas_file_p, (long)((blk_pos + disk_hdr->map_block) * disk_hdr->blk_size), SEEK_SET);
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if(ret == -1) {
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printf("va_server: unable to fseek, err = %d\n", ferror(vas_file_p));
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+ free(hdr);
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+ free(disk_hdr);
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return -1;
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}
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@@ -338,6 +352,8 @@ int read_map_v1(int blk_pos)
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vas_file_p);
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if(items != hdr->map_entries) {
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printf("unable to read map entries, err = %d\n", errno);
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+ free(hdr);
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+ free(disk_hdr);
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return -1;
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}
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diff --git a/xendump.c b/xendump.c
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index 4bd59b5..70cf261 100644
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--- a/xendump.c
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+++ b/xendump.c
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@@ -2775,8 +2775,10 @@ xc_core_dump_elfnote(off_t sh_offset, size_t sh_size, int store)
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index += sizeof(struct elfnote) + elfnote->descsz;
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}
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- if (!store)
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+ if (!store) {
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+ free(notes_buffer);
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return;
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+ }
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if (elfnote_header) {
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xd->xc_core.header.xch_magic = elfnote_header->xch_magic;
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@@ -2798,6 +2800,7 @@ xc_core_dump_elfnote(off_t sh_offset, size_t sh_size, int store)
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xd->xc_core.format_version = format_version->version;
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}
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+ free(notes_buffer);
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}
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/*
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