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What is Windows Watchdog and what do we know about it?
The Next CEO of Stack OverflowUnknown malware, how to report it and whom to report it to?Reconstructing bittorrent data from PCAPWhat are Non-linear/backward overwrites?About windows services and service control ManagerRemote accessed?What are the privacy and security implications of Windows TelemetryLookaside List InjectionDoes it Matter That Universal Windows Platform (UWP) is Open to Phishing Attacks?checking if malware altered system files in windowsBrowser Suddenly gets kicked out of client certificate authenticated site on Apache Windows Environment
Today I came across this term "Watchdog", and something about "DPC_WATCHDOG VIOLATION" errors in Windows. I tried googling around but I only found posts on how to fix Watchdog errors, but nothing on what Watchdog really is or how it works. So, what is Watchdog exactly? Is it some kind of mitigation like DEP or CFI? Does it have some kind of security implications?
Thank you.
windows windows-10
asked Mar 30 at 2:20
user25972user25972
285
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user25972 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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Today I came across this term "Watchdog", and something about "DPC_WATCHDOG VIOLATION" errors in Windows. I tried googling around but I only found posts on how to fix Watchdog errors, but nothing on what Watchdog really is or how it works. So, what is Watchdog exactly? Is it some kind of mitigation like DEP or CFI? Does it have some kind of security implications?
Thank you.
windows windows-10
asked Mar 30 at 2:20
user25972user25972
285
New contributor
user25972 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
Today I came across this term "Watchdog", and something about "DPC_WATCHDOG VIOLATION" errors in Windows. I tried googling around but I only found posts on how to fix Watchdog errors, but nothing on what Watchdog really is or how it works. So, what is Watchdog exactly? Is it some kind of mitigation like DEP or CFI? Does it have some kind of security implications?
Thank you.
windows windows-10
asked Mar 30 at 2:20
user25972user25972
285
New contributor
user25972 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Today I came across this term "Watchdog", and something about "DPC_WATCHDOG VIOLATION" errors in Windows. I tried googling around but I only found posts on how to fix Watchdog errors, but nothing on what Watchdog really is or how it works. So, what is Watchdog exactly? Is it some kind of mitigation like DEP or CFI? Does it have some kind of security implications?
Thank you.
windows windows-10
windows windows-10
asked Mar 30 at 2:20
user25972user25972
285
New contributor
user25972 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Mar 30 at 2:20
user25972user25972
285
New contributor
user25972 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Mar 30 at 2:20
user25972user25972
285
New contributor
user25972 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Mar 30 at 2:20
user25972user25972
285
asked Mar 30 at 2:20
user25972user25972
285
285
New contributor
user25972 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
user25972 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
user25972 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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add a comment |
1 Answer
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The existence of a watchdog timer (software or hardware) has no security implications.
A watchdog is a timer that is used to detect hardware or software lockups. A watchdog timer counts down and, if it ever reaches zero, it will assume the system has frozen and will take corrective action (such as by rebooting the computer). In order to prevent this from happening, a process will periodically reset the watchdog, usually once every few seconds. In the case that this process ever stops functioning (for example due to the computer locking up), the watchdog will keep ticking down until it eventually reaches zero and causes a reboot. The amount of time that must lapse varies from milliseconds to full minutes, depending on how fast the system must respond to a malfunction.
A software watchdog is designed to detect userspace (user programs) freezing or otherwise becoming unresponsive. It's only capable of working if the kernel (the core of the OS) is still functional. A hardware watchdog is usually built into the motherboard and will detect a system lock up no matter what, as a frozen or crashed computer will stop resetting it, causing it to force the system to restart.
See Watchdog timer on Wikipedia for more information.
answered Mar 30 at 2:53
forestforest
39.1k18127139
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1 Answer
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The existence of a watchdog timer (software or hardware) has no security implications.
A watchdog is a timer that is used to detect hardware or software lockups. A watchdog timer counts down and, if it ever reaches zero, it will assume the system has frozen and will take corrective action (such as by rebooting the computer). In order to prevent this from happening, a process will periodically reset the watchdog, usually once every few seconds. In the case that this process ever stops functioning (for example due to the computer locking up), the watchdog will keep ticking down until it eventually reaches zero and causes a reboot. The amount of time that must lapse varies from milliseconds to full minutes, depending on how fast the system must respond to a malfunction.
A software watchdog is designed to detect userspace (user programs) freezing or otherwise becoming unresponsive. It's only capable of working if the kernel (the core of the OS) is still functional. A hardware watchdog is usually built into the motherboard and will detect a system lock up no matter what, as a frozen or crashed computer will stop resetting it, causing it to force the system to restart.
See Watchdog timer on Wikipedia for more information.
answered Mar 30 at 2:53
forestforest
39.1k18127139
add a comment |
The existence of a watchdog timer (software or hardware) has no security implications.
A watchdog is a timer that is used to detect hardware or software lockups. A watchdog timer counts down and, if it ever reaches zero, it will assume the system has frozen and will take corrective action (such as by rebooting the computer). In order to prevent this from happening, a process will periodically reset the watchdog, usually once every few seconds. In the case that this process ever stops functioning (for example due to the computer locking up), the watchdog will keep ticking down until it eventually reaches zero and causes a reboot. The amount of time that must lapse varies from milliseconds to full minutes, depending on how fast the system must respond to a malfunction.
A software watchdog is designed to detect userspace (user programs) freezing or otherwise becoming unresponsive. It's only capable of working if the kernel (the core of the OS) is still functional. A hardware watchdog is usually built into the motherboard and will detect a system lock up no matter what, as a frozen or crashed computer will stop resetting it, causing it to force the system to restart.
See Watchdog timer on Wikipedia for more information.
answered Mar 30 at 2:53
forestforest
39.1k18127139
add a comment |
The existence of a watchdog timer (software or hardware) has no security implications.
A watchdog is a timer that is used to detect hardware or software lockups. A watchdog timer counts down and, if it ever reaches zero, it will assume the system has frozen and will take corrective action (such as by rebooting the computer). In order to prevent this from happening, a process will periodically reset the watchdog, usually once every few seconds. In the case that this process ever stops functioning (for example due to the computer locking up), the watchdog will keep ticking down until it eventually reaches zero and causes a reboot. The amount of time that must lapse varies from milliseconds to full minutes, depending on how fast the system must respond to a malfunction.
A software watchdog is designed to detect userspace (user programs) freezing or otherwise becoming unresponsive. It's only capable of working if the kernel (the core of the OS) is still functional. A hardware watchdog is usually built into the motherboard and will detect a system lock up no matter what, as a frozen or crashed computer will stop resetting it, causing it to force the system to restart.
See Watchdog timer on Wikipedia for more information.
answered Mar 30 at 2:53
forestforest
39.1k18127139
The existence of a watchdog timer (software or hardware) has no security implications.
A watchdog is a timer that is used to detect hardware or software lockups. A watchdog timer counts down and, if it ever reaches zero, it will assume the system has frozen and will take corrective action (such as by rebooting the computer). In order to prevent this from happening, a process will periodically reset the watchdog, usually once every few seconds. In the case that this process ever stops functioning (for example due to the computer locking up), the watchdog will keep ticking down until it eventually reaches zero and causes a reboot. The amount of time that must lapse varies from milliseconds to full minutes, depending on how fast the system must respond to a malfunction.
A software watchdog is designed to detect userspace (user programs) freezing or otherwise becoming unresponsive. It's only capable of working if the kernel (the core of the OS) is still functional. A hardware watchdog is usually built into the motherboard and will detect a system lock up no matter what, as a frozen or crashed computer will stop resetting it, causing it to force the system to restart.
See Watchdog timer on Wikipedia for more information.
answered Mar 30 at 2:53
forestforest
39.1k18127139
answered Mar 30 at 2:53
forestforest
39.1k18127139
answered Mar 30 at 2:53
forestforest
39.1k18127139
answered Mar 30 at 2:53
forestforest
39.1k18127139
39.1k18127139
add a comment |
add a comment |
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