Documentation/fault-injection/fault-injection.rst

40   debugfs entries under /sys/kernel/debug/mmc0/fail_mmc_request
46   under /sys/kernel/debug/fail_function. No boot option supported.
51   debugfs entries under /sys/kernel/debug/nvme*/fault_inject. The default
73 - /sys/kernel/debug/fail*/probability:
81 	/sys/kernel/debug/fail*/interval for such testcases.
83 - /sys/kernel/debug/fail*/interval:
91 - /sys/kernel/debug/fail*/times:
96 - /sys/kernel/debug/fail*/space:
102 - /sys/kernel/debug/fail*/verbose
109 	to debug the problems revealed by fault injection.
111 - /sys/kernel/debug/fail*/task-filter:
119 - /sys/kernel/debug/fail*/require-start,
120   /sys/kernel/debug/fail*/require-end,
121   /sys/kernel/debug/fail*/reject-start,
122   /sys/kernel/debug/fail*/reject-end:
131 - /sys/kernel/debug/fail*/stacktrace-depth:
137 - /sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem:
144 - /sys/kernel/debug/failslab/ignore-gfp-wait:
145 - /sys/kernel/debug/fail_page_alloc/ignore-gfp-wait:
152 - /sys/kernel/debug/fail_page_alloc/min-order:
157 - /sys/kernel/debug/fail_futex/ignore-private:
164 - /sys/kernel/debug/fail_sunrpc/ignore-client-disconnect:
171 - /sys/kernel/debug/fail_sunrpc/ignore-server-disconnect:
178 - /sys/kernel/debug/fail_sunrpc/ignore-cache-wait:
185 - /sys/kernel/debug/fail_function/inject:
194 - /sys/kernel/debug/fail_function/injectable:
203 - /sys/kernel/debug/fail_function/<function-name>/retval:
355     echo Y > /sys/kernel/debug/$FAILTYPE/task-filter
356     echo 10 > /sys/kernel/debug/$FAILTYPE/probability
357     echo 100 > /sys/kernel/debug/$FAILTYPE/interval
358     echo -1 > /sys/kernel/debug/$FAILTYPE/times
359     echo 0 > /sys/kernel/debug/$FAILTYPE/space
360     echo 2 > /sys/kernel/debug/$FAILTYPE/verbose
361     echo Y > /sys/kernel/debug/$FAILTYPE/ignore-gfp-wait
406     cat /sys/module/$module/sections/.text > /sys/kernel/debug/$FAILTYPE/require-start
407     cat /sys/module/$module/sections/.data > /sys/kernel/debug/$FAILTYPE/require-end
409     echo N > /sys/kernel/debug/$FAILTYPE/task-filter
410     echo 10 > /sys/kernel/debug/$FAILTYPE/probability
411     echo 100 > /sys/kernel/debug/$FAILTYPE/interval
412     echo -1 > /sys/kernel/debug/$FAILTYPE/times
413     echo 0 > /sys/kernel/debug/$FAILTYPE/space
414     echo 2 > /sys/kernel/debug/$FAILTYPE/verbose
415     echo Y > /sys/kernel/debug/$FAILTYPE/ignore-gfp-wait
416     echo Y > /sys/kernel/debug/$FAILTYPE/ignore-gfp-highmem
417     echo 10 > /sys/kernel/debug/$FAILTYPE/stacktrace-depth
419     trap "echo 0 > /sys/kernel/debug/$FAILTYPE/probability" SIGINT SIGTERM EXIT
438     echo $FAILFUNC > /sys/kernel/debug/$FAILTYPE/inject
439     printf %#x -12 > /sys/kernel/debug/$FAILTYPE/$FAILFUNC/retval
440     echo N > /sys/kernel/debug/$FAILTYPE/task-filter
441     echo 100 > /sys/kernel/debug/$FAILTYPE/probability
442     echo 0 > /sys/kernel/debug/$FAILTYPE/interval
443     echo -1 > /sys/kernel/debug/$FAILTYPE/times
444     echo 0 > /sys/kernel/debug/$FAILTYPE/space
445     echo 1 > /sys/kernel/debug/$FAILTYPE/verbose
456     echo > /sys/kernel/debug/$FAILTYPE/inject
513 	system("echo N > /sys/kernel/debug/failslab/ignore-gfp-wait");