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| author | wuguanghao <wuguanghao3@huawei.com> | 2021-06-30 16:27:18 +0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2021-07-15 23:38:36 -0400 |
| commit | af03924f5b43b325a436d07ee1222f42e3aa96b6 (patch) | |
| tree | f5749e6ec2f8946d1611cc3069cc3d9b1e494946 | |
| parent | c3215a532441a9a397d1b12c63827e8f7233938b (diff) | |
| download | e2fsprogs-af03924f5b43b325a436d07ee1222f42e3aa96b6.tar.gz | |
append_pathname: check the value returned by realloc
In append_pathname(), we need to add a new path to save the value
returned by realloc, otherwise the name->path may be NULL, causing
a segfault.
Signed-off-by: Wu Guanghao <wuguanghao3@huawei.com>
Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| -rw-r--r-- | contrib/fsstress.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/contrib/fsstress.c b/contrib/fsstress.c index 2a983482e..2136a9034 100644 --- a/contrib/fsstress.c +++ b/contrib/fsstress.c @@ -599,6 +599,7 @@ void add_to_flist(int ft, int id, int parent) void append_pathname(pathname_t * name, char *str) { int len; + char *path; len = strlen(str); #ifdef DEBUG @@ -609,7 +610,13 @@ void append_pathname(pathname_t * name, char *str) } #endif - name->path = realloc(name->path, name->len + 1 + len); + path = realloc(name->path, name->len + 1 + len); + if (path == NULL) { + fprintf(stderr, "fsstress: append_pathname realloc failed\n"); + chdir(homedir); + abort(); + } + name->path = path; strcpy(&name->path[name->len], str); name->len += len; } |