From: Dmitry Eremin <dmitry.ere...@intel.com> 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.z...@intel.com> Signed-off-by: Dmitry Eremin <dmitry.ere...@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.o...@yahoo.com> Reviewed-by: Olaf Weber <o...@sgi.com> Reviewed-by: Oleg Drokin <oleg.dro...@intel.com> Signed-off-by: James Simmons <jsimm...@infradead.org> --- drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c index 427e219..71a5b19 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 @@ static int cfs_cpu_dead(unsigned int cpu) 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); -- 1.8.3.1
