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SUSE:SLE-12-SP5:Update
dmidecode
fix-error-paths-in-mem_chunk.patch
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File fix-error-paths-in-mem_chunk.patch of Package dmidecode
From: Jean Delvare <jdelvare@suse.de> Date: Wed, 14 Oct 2015 14:37:09 +0200 Subject: Fix error paths in mem_chunk Git-commit: 458f73d58c24a7addce82bf1e8bfb8c2554ca458 Patch-mainline: 3.1 Use a common error path in function mem_chunk, to make sure it does not leak memory and does not leave an opened file descriptor behind, without duplicating the cleaning code. --- util.c | 24 ++++++++++-------------- 1 file changed, 10 insertions(+), 14 deletions(-) --- a/util.c +++ b/util.c @@ -169,7 +169,7 @@ void *mem_chunk(off_t base, size_t len, if ((p = malloc(len)) == NULL) { perror("malloc"); - return NULL; + goto out; } #ifdef USE_MMAP @@ -177,8 +177,7 @@ void *mem_chunk(off_t base, size_t len, { fprintf(stderr, "%s: ", devmem); perror("stat"); - free(p); - return NULL; + goto err_free; } /* @@ -189,8 +188,7 @@ void *mem_chunk(off_t base, size_t len, { fprintf(stderr, "mmap: Can't map beyond end of file %s\n", devmem); - free(p); - return NULL; + goto err_free; } #ifdef _SC_PAGESIZE @@ -223,19 +221,17 @@ try_read: { fprintf(stderr, "%s: ", devmem); perror("lseek"); - free(p); - return NULL; + goto err_free; } - if (myread(fd, p, len, devmem) == -1) - { - free(p); - return NULL; - } + if (myread(fd, p, len, devmem) == 0) + goto out; + +err_free: + free(p); + p = NULL; -#ifdef USE_MMAP out: -#endif if (close(fd) == -1) perror(devmem);
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