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| author | Dmitry Eremin <dmitry.eremin@intel.com> | 2017-01-29 03:05:01 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-03 15:01:37 +0300 |
| commit | c2351249f140aebdf911d86d7a1542c40b20fca3 (patch) | |
| tree | d1bcf0f9cf958a3942dbfa5d135f97c3c2f19fe7 | |
| parent | aabb4adaddb39431ae68c126bd8d2d09e69dd3e0 (diff) | |
| download | linux-c2351249f140aebdf911d86d7a1542c40b20fca3.tar.xz | |
staging: lustre: libcfs: avoid stomping on module param cpu_pattern
The function cfs_cpt_table_create_pattern() alters the string
passed to it. Currently we are passing in the module parameter
string cpu_pattern which is incorrect. Instead lets duplicate
the module parameter string and pass that to the function
cfs_cpt_table_create_pattern().
Signed-off-by: Liang Zhen <liang.zhen@intel.com>
Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5050
Reviewed-on: http://review.whamcloud.com/22377
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Olaf Weber <olaf@sgi.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c index 427e2198bb9e..71a5b190ea5a 100644 --- a/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c +++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c @@ -1050,7 +1050,15 @@ cfs_cpu_init(void) ret = -EINVAL; if (*cpu_pattern) { - cfs_cpt_table = cfs_cpt_table_create_pattern(cpu_pattern); + char *cpu_pattern_dup = kstrdup(cpu_pattern, GFP_KERNEL); + + if (!cpu_pattern_dup) { + CERROR("Failed to duplicate cpu_pattern\n"); + goto failed; + } + + cfs_cpt_table = cfs_cpt_table_create_pattern(cpu_pattern_dup); + kfree(cpu_pattern_dup); if (!cfs_cpt_table) { CERROR("Failed to create cptab from pattern %s\n", cpu_pattern); |