check whether savedptr is NULL before invoking strlen
savedptr can be null in musl libc, so the strlen(NULL) will segfault Signed-off-by: Chao Liu <liuchao173@huawei.com>
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@ -178,7 +178,7 @@ void init_irq_class_and_type(char *savedline, struct irq_info *info, int irq)
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}
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}
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#ifdef AARCH64
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#ifdef AARCH64
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if (strlen(savedptr) > 0) {
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if (savedptr && strlen(savedptr) > 0) {
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snprintf(irq_fullname, PATH_MAX, "%s %s", last_token, savedptr);
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snprintf(irq_fullname, PATH_MAX, "%s %s", last_token, savedptr);
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tmp = strchr(irq_fullname, '\n');
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tmp = strchr(irq_fullname, '\n');
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if (tmp)
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if (tmp)
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