kernel/kcsan/kcsan_test.c

52 /* Report as observed from console. */
57 } observed = {
58 	.lock = __SPIN_LOCK_UNLOCKED(observed.lock),
93  * Probe for console output: checks if a race was reported, and obtains observed
108 	spin_lock_irqsave(&observed.lock, flags);
109 	nlines = observed.nlines;
118 		strscpy(observed.lines[0], buf, min(len + 1, sizeof(observed.lines[0])));
121 		strscpy(observed.lines[nlines++], buf, min(len + 1, sizeof(observed.lines[0])));
128 			strcpy(observed.lines[nlines++], "<none>");
133 	WRITE_ONCE(observed.nlines, nlines); /* Publish new nlines. */
134 	spin_unlock_irqrestore(&observed.lock, flags);
141 	return READ_ONCE(observed.nlines) == ARRAY_SIZE(observed.lines);
155 /* Check observed report matches information in @r. */
162 	typeof(*observed.lines) *expect;
171 	expect = kmalloc(sizeof(observed.lines), GFP_KERNEL);
247 	spin_lock_irqsave(&observed.lock, flags);
251 	/* Finally match expected output to what we actually observed. */
252 	ret = strstr(observed.lines[0], expect[0]) &&
254 	      ((strstr(observed.lines[1], expect[1]) &&
255 		strstr(observed.lines[2], expect[2])) ||
256 	       (strstr(observed.lines[1], expect[2]) &&
257 		strstr(observed.lines[2], expect[1])));
259 	spin_unlock_irqrestore(&observed.lock, flags);
1517 	spin_lock_irqsave(&observed.lock, flags);
1518 	for (i = 0; i < ARRAY_SIZE(observed.lines); ++i)
1519 		observed.lines[i][0] = '\0';
1520 	observed.nlines = 0;
1521 	spin_unlock_irqrestore(&observed.lock, flags);