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/openbmc/linux/Documentation/fault-injection/
H A Dfault-injection.rst2 Fault injection capabilities infrastructure
5 See also drivers/md/md-faulty.c and "every_nth" module option for scsi_debug.
8 Available fault injection capabilities
9 --------------------------------------
11 - failslab
15 - fail_page_alloc
19 - fail_usercopy
23 - fail_futex
25 injects futex deadlock and uaddr fault errors.
27 - fail_sunrpc
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H A Dnotifier-error-inject.rst4 Notifier error injection provides the ability to inject artificial errors to
15 ----------------------------------
18 /sys/kernel/debug/notifier-error-inject/pm/actions/<notifier event>/error
26 Example: Inject PM suspend error (-12 = -ENOMEM)::
28 # cd /sys/kernel/debug/notifier-error-inject/pm/
29 # echo -12 > actions/PM_SUSPEND_PREPARE/error
34 ----------------------------------------------
37 /sys/kernel/debug/notifier-error-inject/memory/actions/<notifier event>/error
44 Example: Inject memory hotplug offline error (-12 == -ENOMEM)::
46 # cd /sys/kernel/debug/notifier-error-inject/memory
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H A Dindex.rst1 .. SPDX-License-Identifier: GPL-2.0
4 fault-injection
10 fault-injection
11 notifier-error-inject
12 nvme-fault-injection
13 provoke-crashes
H A Dnvme-fault-injection.rst1 NVMe Fault Injection
3 Linux's fault injection framework provides a systematic way to support
10 Following examples show how to inject an error into the nvme.
16 Example 1: Inject default status code with no retry
17 ---------------------------------------------------
34 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-rc8+ #2
68 EXT4-fs error (device nvme0n1): ext4_find_entry:1436:
71 Example 2: Inject default status code with retry
72 ------------------------------------------------
92 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.15.0-rc8+ #4
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/openbmc/linux/Documentation/devicetree/bindings/misc/
H A Dxlnx,tmr-inject.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/misc/xlnx,tmr-inject.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Xilinx Triple Modular Redundancy(TMR) Inject IP
10 - Appana Durga Kedareswara rao <appana.durga.kedareswara.rao@amd.com>
13 The Triple Modular Redundancy(TMR) Inject core provides functional fault
15 possibility to verify that the TMR subsystem error detection and fault
21 - xlnx,tmr-inject-1.0
35 - compatible
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/openbmc/linux/drivers/misc/
H A Dxilinx_tmr_inject.c1 // SPDX-License-Identifier: GPL-2.0
3 * Driver for Xilinx TMR Inject IP.
8 * This driver is developed for TMR Inject IP,The Triple Modular Redundancy(TMR)
9 * Inject provides fault injection.
16 #include <linux/fault-inject.h>
18 /* TMR Inject Register offsets */
33 * struct xtmr_inject_dev - Driver data for TMR Inject
45 MODULE_PARM_DESC(inject_request, "default fault injection attributes");
52 iowrite32(value, xtmr_inject->regs + addr); in xtmr_inject_write()
58 return ioread32(xtmr_inject->regs + addr); in xtmr_inject_read()
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/openbmc/openbmc-test-automation/openpower/ras/
H A Dras_utils.robot42 ... grep -i ${signature_desc} ${error_log_file_path}
46 Inject Recoverable Error With Threshold Limit
47 [Documentation] Inject and verify recoverable error on processor through
50 ... 1. Inject recoverable error on a given target
58 # interface_type Inject error through 'BMC' or 'HOST'.
59 # fir_address FIR (Fault isolation register) value (e.g. 2011400).
65 Run Keyword Inject Error Through ${interface_type}
74 Inject Unrecoverable Error
75 [Documentation] Inject and verify unrecoverable error on processor through
78 ... 1. Inject unrecoverable error on a given target
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/openbmc/openbmc-test-automation/lib/ras/
H A Dhost_utils.robot20 # input_cmd -l|--list-chips
21 # -c|--chip <chip-id> <addr>
27 [Documentation] Executes opal-gard command on OS with the given
33 ${output} ${stderr} ${rc}= OS Execute Command opal-gard ${input_cmd}
42 # fir_address FIR (Fault isolation register) value (e.g. 2011400).
45 ${cmd}= Catenate putscom -c 0x${proc_chip_id} 0x${fir_address} 0x${value}
55 ${cmd}= Catenate -l | grep -i ${chip_type} | cut -c1-8
58 # getscom -l | grep processor | cut -c1-8
59 # 00000008 - False
60 # 00000000 - True
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/openbmc/linux/lib/
H A Dfault-inject-usercopy.c1 // SPDX-License-Identifier: GPL-2.0-only
2 #include <linux/fault-inject.h>
3 #include <linux/fault-inject-usercopy.h>
H A DKconfig.debug1 # SPDX-License-Identifier: GPL-2.0-only
19 parameter printk.time=1. See Documentation/admin-guide/kernel-parameters.rst
50 int "Default console loglevel (1-15)"
60 Note: This does not affect the log level of un-prefixed printk()
65 int "quiet console loglevel (1-15)"
76 int "Default message log level (1-7)"
82 This was hard-coded to KERN_WARNING since at least 2.6.10 but folks
118 enabled/disabled based on various levels of scope - per source file,
158 nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
162 nullarbor:~ # echo -n 'file svcsock.c +p' >
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/openbmc/linux/arch/arm64/kvm/
H A Dinject_fault.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Fault injection for both 32 and 64bit guests.
5 * Copyright (C) 2012,2013 - ARM Ltd
9 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
74 * an AArch32 fault, it means we managed to trap an EL0 fault. in inject_abt64()
159 * kvm_inject_dabt - inject a data abort into the guest
175 * kvm_inject_pabt - inject a prefetch abort into the guest
204 * Size Fault at level 0, as if exceeding PARange. in kvm_inject_size_fault()
206 * Non-LPAE guests will only get the external abort, as there in kvm_inject_size_fault()
219 * kvm_inject_undefined - inject an undefined instruction into the guest
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/openbmc/qemu/tests/qemu-iotests/
H A D08332 rm -f "$SOCK_DIR/nbd.sock"
33 rm -f nbd-fault-injector.out
34 rm -f nbd-fault-injector.conf
51 --classic-negotiation)
53 extra_args=--classic-negotiation
56 --tcp)
60 --unix)
75 cat > "$TEST_DIR/nbd-fault-injector.conf" <<EOF
76 [inject-error]
87 rm -f "$SOCK_DIR/nbd.sock"
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H A Dnbd-fault-injector.py2 # NBD server - fault injection utility
5 # [inject-error "disconnect-neg1"]
11 # name, so give each [inject-error] a unique name.
13 # inject-error options:
14 # event - name of the trigger event
15 # "neg1" - first part of negotiation struct
16 # "export" - export struct
17 # "neg2" - second part of negotiation struct
18 # "request" - NBD request struct
19 # "reply" - NBD reply struct
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H A D27730 conf_file = file_path('nbd-fault-injector.conf')
31 nbd_sock = file_path('nbd-sock', base_dir=iotests.sock_dir)
36 Create configuration file for the nbd-fault-injector.py
41 conff.write('[inject-error]\nevent={}\nwhen=after'.format(event))
47 srv = subprocess.Popen(['./nbd-fault-injector.py', '--classic-negotiation',
60 log('NBD client: QEMU-IO write')
62 ['-c', 'write -P 0x7 0 3M', '--image-opts',
64 'reconnect-delay=7'.format(nbd_sock)]
/openbmc/linux/drivers/ufs/core/
H A Dufs-fault-injection.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 #include <linux/fault-inject.h>
7 #include "ufs-fault-injection.h"
20 * For more details about fault injection, please refer to
21 * Documentation/fault-injection/fault-injection.rst.
26 "Fault injection. trigger_eh=<interval>,<probability>,<space>,<times>");
32 "Fault injection. timeout=<interval>,<probability>,<space>,<times>");
37 const char *fault_str = kp->arg; in ufs_fault_get()
46 if (kp->arg == g_trigger_eh_str) in ufs_fault_set()
48 else if (kp->arg == g_timeout_str) in ufs_fault_set()
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/openbmc/linux/tools/testing/selftests/kvm/x86_64/
H A Dnested_exceptions_test.c1 // SPDX-License-Identifier: GPL-2.0-only
18 /* Arbitrary 32-bit error code injected by this test. */
34 * Bit '1' is set if the fault occurred when looking up a descriptor in the
48 * led to the double fault.
79 struct vmcb *vmcb = svm->vmcb; in svm_run_l2()
80 struct vmcb_control_area *ctrl = &vmcb->control; in svm_run_l2()
82 vmcb->save.rip = (u64)l2_code; in svm_run_l2()
83 run_guest(vmcb, svm->vmcb_gpa); in svm_run_l2()
88 GUEST_ASSERT_EQ(ctrl->exit_code, (SVM_EXIT_EXCP_BASE + vector)); in svm_run_l2()
89 GUEST_ASSERT_EQ(ctrl->exit_info_1, error_code); in svm_run_l2()
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/openbmc/linux/tools/testing/fault-injection/
H A Dfailcmd.sh2 # SPDX-License-Identifier: GPL-2.0
5 # failcmd.sh - run a command with injecting slab/page allocation failures
8 # failcmd.sh --help
12 # Run command with injecting slab/page allocation failures by fault
24 -p percent
25 --probability=percent
29 -t value
30 --times=value
34 --oom-kill-allocating-task=value
39 -h, --help
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/openbmc/linux/arch/x86/kvm/vmx/
H A Dsgx.c1 // SPDX-License-Identifier: GPL-2.0
28 bool fault; in sgx_get_encls_gva() local
30 /* Skip vmcs.GUEST_DS retrieval for 64-bit mode to avoid VMREADs. */ in sgx_get_encls_gva()
38 fault = true; in sgx_get_encls_gva()
40 fault = is_noncanonical_address(*gva, vcpu); in sgx_get_encls_gva()
43 fault = (s.unusable) || in sgx_get_encls_gva()
47 (((u64)*gva + size - 1) > s.limit + 1)); in sgx_get_encls_gva()
49 if (fault) in sgx_get_encls_gva()
51 return fault ? -EINVAL : 0; in sgx_get_encls_gva()
67 return -EFAULT; in sgx_read_hva()
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/openbmc/linux/drivers/infiniband/hw/hfi1/
H A Dfault.h1 /* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
9 #include <linux/fault-inject.h>
20 struct fault { struct
/openbmc/linux/drivers/nvme/host/
H A Dfault_inject.c1 // SPDX-License-Identifier: GPL-2.0
3 * fault injection support for nvme.
12 /* optional fault injection attributes boot time option:
22 struct fault_attr *attr = &fault_inj->attr; in nvme_fault_inject_init()
24 /* set default fault injection attribute */ in nvme_fault_inject_init()
42 fault_inj->parent = parent; in nvme_fault_inject_init()
45 fault_inj->status = NVME_SC_INVALID_OPCODE; in nvme_fault_inject_init()
46 fault_inj->dont_retry = true; in nvme_fault_inject_init()
47 debugfs_create_x16("status", 0600, dir, &fault_inj->status); in nvme_fault_inject_init()
48 debugfs_create_bool("dont_retry", 0600, dir, &fault_inj->dont_retry); in nvme_fault_inject_init()
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/openbmc/linux/mm/
H A Dfailslab.c1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/fault-inject.h>
21 /* No fault-injection for bootstrap cache */ in __should_failslab()
32 if (failslab.cache_filter && !(s->flags & SLAB_FAILSLAB)) in __should_failslab()
44 return should_fail_ex(&failslab.attr, s->object_size, flags); in __should_failslab()
63 debugfs_create_bool("ignore-gfp-wait", mode, dir, in failslab_debugfs_init()
65 debugfs_create_bool("cache-filter", mode, dir, in failslab_debugfs_init()
/openbmc/linux/Documentation/mm/
H A Dhwpoison.rst41 The code consists of a the high level handler in mm/memory-failure.c,
46 of applications. KVM support requires a recent qemu-kvm release.
49 KVM can inject the machine check into the guest with the proper
109 * madvise(MADV_HWPOISON, ....) (as root) - Poison a page in the
112 * hwpoison-inject module through debugfs ``/sys/kernel/debug/hwpoison/``
114 corrupt-pfn
115 Inject hwpoison fault at PFN echoed into this file. This does
118 unpoison-pfn
119 Software-unpoison page at PFN echoed into this file. This way
127 corrupt-filter-dev-major, corrupt-filter-dev-minor
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/openbmc/linux/net/sunrpc/
H A Dfail.h1 /* SPDX-License-Identifier: GPL-2.0 */
9 #include <linux/fault-inject.h>
/openbmc/linux/drivers/media/platform/qcom/venus/
H A Ddbgfs.h1 /* SPDX-License-Identifier: GPL-2.0 */
7 #include <linux/fault-inject.h>
H A Ddbgfs.c1 // SPDX-License-Identifier: GPL-2.0-only
7 #include <linux/fault-inject.h>
17 core->root = debugfs_create_dir("venus", NULL); in venus_dbgfs_init()
18 debugfs_create_x32("fw_level", 0644, core->root, &venus_fw_debug); in venus_dbgfs_init()
21 fault_create_debugfs_attr("fail_ssr", core->root, &venus_ssr_attr); in venus_dbgfs_init()
27 debugfs_remove_recursive(core->root); in venus_dbgfs_deinit()

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