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<title>Linux kernel oops</title>

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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Linux kernel oops</span></span>

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<p>In <a href="Computing" title="Computing">computing</a>, an <b>oops</b> is a serious but non-fatal error in the <a href="Linux_kernel" title="Linux kernel">Linux kernel</a>. An oops may precede a <a href="Kernel_panic" title="Kernel panic">kernel panic</a>, but it may also allow continued operation with compromised <a href="Reliability_engineering" title="Reliability engineering">reliability</a>. The term does not stand for anything, other than that it is a simple mistake.

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<div class="mw-heading mw-heading2"><h2 id="Functioning">Functioning</h2></div>

<p>When the kernel detects a problem, it <a href="Kill_(Unix)" class="mw-redirect" title="Kill (Unix)">kills</a> any offending <a href="Process_(computing)" title="Process (computing)">processes</a> and prints an <i>oops message</i>, which Linux kernel engineers can use in <a href="Debugging" title="Debugging">debugging</a> the <a href="Fault_(technology)" title="Fault (technology)">condition</a> that created the oops and <a href="Patch_(computing)" title="Patch (computing)">fixing</a> the underlying programming error. After a system has experienced an oops, some internal resources may no longer be operational. Thus, even if the system appears to work correctly, undesirable side effects may have resulted from the active task being killed. A kernel oops often leads to a <a href="Kernel_panic" title="Kernel panic">kernel panic</a> when the system attempts to use resources that have been lost. Some kernels are configured to panic when many oopses (10,000 by default) have occurred.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> This oops limit is due to the potential, for example, for attackers to repeatedly trigger an oops and an associated <a href="Resource_leak" title="Resource leak">resource leak</a>, which eventually <a href="Integer_overflow" title="Integer overflow">overflows an integer</a> and allows further exploitation.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>

</p><p>The official Linux kernel documentation regarding oops messages resides in the file <style data-mw-deduplicate="TemplateStyles:r886049734">

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</style><span class="monospaced">Documentation/admin-guide/bug-hunting.rst</span><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> of the kernel sources. Some logger configurations may affect the ability to collect oops messages.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> The <code>kerneloops</code> software can collect and submit kernel oopses to a repository such as the www.kerneloops.org website,<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> which provides statistics and public access to reported oopses.

</p><p>A simplified crash screen was introduced in Linux 6.10, similar to the <a href="Blue_Screen_of_Death" class="mw-redirect" title="Blue Screen of Death">Blue Screen of Death</a> on Windows.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>

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<ul><li><a href="Kdump_(Linux)" title="Kdump (Linux)">kdump (Linux)</a> – Linux kernel's crash dump mechanism, which internally uses <a href="Kexec" title="Kexec">kexec</a></li>

<li><a href="System.map" title="System.map">System.map</a> – contains mappings between symbol names and their addresses in memory, used to interpret oopses</li></ul>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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</style><cite id="CITEREFHorn2022" class="citation web cs1">Horn, Jann (7 November 2022). <a rel="nofollow" class="external text" href="https://lore.kernel.org/all/20221107201317.324457-1-jannh@google.com/">"[PATCH] exit: Put an upper limit on how often we can oops"</a>. <i>lore.kernel.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">31 January</span> 2023</span>.</cite></span>

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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://docs.kernel.org/admin-guide/sysctl/kernel.html#oops-limit">"Documentation for /proc/sys/kernel/"</a>. <i>docs.kernel.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">31 January</span> 2023</span>.</cite></span>

</li>

<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><cite id="CITEREFCorbet2022" class="citation web cs1">Corbet, Jonathan (18 November 2022). <a rel="nofollow" class="external text" href="https://lwn.net/Articles/914878/">"Averting excessive oopses"</a>. <i><a href="LWN.net" title="LWN.net">LWN.net</a></i>.</cite></span>

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<li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><cite id="CITEREFJenkins2023" class="citation web cs1">Jenkins, Seth (19 January 2023). <a rel="nofollow" class="external text" href="https://googleprojectzero.blogspot.com/2023/01/exploiting-null-dereferences-in-linux.html">"Exploiting null-dereferences in the Linux kernel"</a>. <a href="Google_Project_Zero" class="mw-redirect" title="Google Project Zero">Google Project Zero</a>.</cite></span>

</li>

<li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.kernel.org/doc/Documentation/admin-guide/bug-hunting.rst">"bug-hunting"</a>. <i>kernel.org</i>.</cite></span>

</li>

<li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20200803071136/http://madwifi-project.org/wiki/DevDocs/KernelOops">"DevDocs/KernelOops"</a>. <i>madwifi-project.org</i>. Archived from <a rel="nofollow" class="external text" href="http://madwifi-project.org/wiki/DevDocs/KernelOops">the original</a> on 2020-08-03<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-08-21</span></span>.</cite></span>

</li>

<li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://linux.die.net/man/8/kerneloops">"kerneloops(8) - Linux man page"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">31 January</span> 2023</span>.</cite></span>

</li>

<li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><cite id="CITEREFLarabel2024" class="citation web cs1">Larabel, Michael (19 April 2024). <a rel="nofollow" class="external text" href="https://www.phoronix.com/news/Linux-6.10-DRM-Panic-Handler">"Linux 6.10 Preps A Kernel Panic Screen - Sort Of A "Blue Screen of Death" - Phoronix"</a>. <i>Phoronix</i>.</cite></span>

</li>

</ol></div></div>

<div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2></div>

<ul><li><a rel="nofollow" class="external text" href="https://lwn.net/images/pdf/LDD3/ch04.pdf"><i>Linux Device Drivers</i>, 3rd edition, Chapter 4.</a></li>

<li><cite id="CITEREFJohn_Bradford2003" class="citation mailinglist cs1">John Bradford (2003-03-08). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070310214850/http://www.ussg.iu.edu/hypermail/linux/kernel/0303.1/0009.html">"Re: what's an OOPS"</a>. <i><a href="Linux_kernel_mailing_list" title="Linux kernel mailing list">LKML</a></i> (Mailing list). Archived from <a rel="nofollow" class="external text" href="http://www.ussg.iu.edu/hypermail/linux/kernel/0303.1/0009.html">the original</a> on 2007-03-10<span class="reference-accessdate">. Retrieved <span class="nowrap">2006-05-22</span></span>.</cite></li>

<li><cite id="CITEREFSzakacsits_Szabolcs2003" class="citation mailinglist cs1">Szakacsits Szabolcs (2003-03-08). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070313235208/http://www.ussg.iu.edu/hypermail/linux/kernel/0303.1/0027.html">"Re: what's an OOPS"</a>. <i>LKML</i> (Mailing list). Archived from <a rel="nofollow" class="external text" href="http://www.ussg.iu.edu/hypermail/linux/kernel/0303.1/0027.html">the original</a> on 2007-03-13<span class="reference-accessdate">. Retrieved <span class="nowrap">2006-05-22</span></span>.</cite></li>

<li><cite id="CITEREFAl_Viro2008" class="citation mailinglist cs1">Al Viro (2008-01-14). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080421030623/http://article.gmane.org/gmane.linux.kernel/624292">"OOPS report analysis"</a>. <i>LKML</i> (Mailing list). Archived from <a rel="nofollow" class="external text" href="http://article.gmane.org/gmane.linux.kernel/624292">the original</a> on 2008-04-21<span class="reference-accessdate">. Retrieved <span class="nowrap">2008-01-14</span></span>.</cite></li>

<li><a rel="nofollow" class="external text" href="http://madwifi-project.org/wiki/DevDocs/KernelOops">Kernel Oops Howto (the madwifi project)</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20200803071136/http://madwifi-project.org/wiki/DevDocs/KernelOops">Archived</a> 2020-08-03 at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a> Useful information on configuration files and tools to help display oops messages. Also many other links.</li></ul>

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</style><div id="Linux_kernel514" style="font-size:114%;margin:0 4em"><a href="Linux_kernel" title="Linux kernel">Linux kernel</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Organization</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Kernel19" scope="row" class="navbox-group" style="width:1%">Kernel</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Linux_Foundation" title="Linux Foundation">Linux Foundation</a></li>

<li><a href="Linux_Mark_Institute" title="Linux Mark Institute">Linux Mark Institute</a></li>

<li><a href="Linus's_law" title="Linus's law">Linus's law</a></li>

<li><a href="Tanenbaum%E2%80%93Torvalds_debate" title="Tanenbaum–Torvalds debate">Tanenbaum–Torvalds debate</a></li>

<li><a href="SCO%E2%80%93Linux_disputes" title="SCO–Linux disputes">SCO disputes</a></li>

<li><a href="Linaro" title="Linaro">Linaro</a></li>

<li><a href="Menuconfig" title="Menuconfig">menuconfig</a></li>

<li><a href="List_of_Linux-supported_computer_architectures" title="List of Linux-supported computer architectures">Supported computer architectures</a></li>

<li><a href="Linux_kernel_version_history" title="Linux kernel version history">Version history</a></li>

<li><a href="Criticism_of_Linux" title="Criticism of Linux">Criticism</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Support</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li>Developers

<ul><li><i><a href="The_Linux_Programming_Interface" title="The Linux Programming Interface">The Linux Programming Interface</a></i></li>

<li><a href="Kernel.org" title="Kernel.org">kernel.org</a></li>

<li><a href="Linux_conference" class="mw-redirect" title="Linux conference">Linux conferences</a></li></ul></li>

<li>Users

<ul><li><a href="Linux_user_group" title="Linux user group">Linux User Group (LUG)</a></li></ul></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Werner_Almesberger" title="Werner Almesberger">Werner Almesberger</a></li>

<li><a href="H._Peter_Anvin" title="H. Peter Anvin">H. Peter Anvin</a></li>

<li><a href="Jens_Axboe" title="Jens Axboe">Jens Axboe</a></li>

<li><a href="Moshe_Bar_(investor)" title="Moshe Bar (investor)">Moshe Bar</a></li>

<li><a href="Suparna_Bhattacharya" title="Suparna Bhattacharya">Suparna Bhattacharya</a></li>

<li><a href="Andries_Brouwer" title="Andries Brouwer">Andries Brouwer</a></li>

<li><a href="Matthew_Garrett" title="Matthew Garrett">Matthew Garrett</a></li>

<li><a href="Avi_Kivity" title="Avi Kivity">Avi Kivity</a></li>

<li><a href="Con_Kolivas" title="Con Kolivas">Con Kolivas</a></li>

<li><a href="Greg_Kroah-Hartman" title="Greg Kroah-Hartman">Greg Kroah-Hartman</a></li>

<li><a href="Benson_Leung" title="Benson Leung">Benson Leung</a></li>

<li><a href="Robert_Love" title="Robert Love">Robert Love</a></li>

<li><a href="David_S._Miller" title="David S. Miller">David S. Miller</a></li>

<li><a href="Ingo_Moln%C3%A1r" title="Ingo Molnár">Ingo Molnár</a></li>

<li><a href="Andrew_Morton_(computer_programmer)" title="Andrew Morton (computer programmer)">Andrew Morton</a></li>

<li><a href="Hans_Reiser" title="Hans Reiser">Hans Reiser</a></li>

<li><a href="Rusty_Russell" title="Rusty Russell">Rusty Russell</a></li>

<li><a href="Shuah_Khan" title="Shuah Khan">Shuah Khan</a></li>

<li><a href="Linus_Torvalds" title="Linus Torvalds">Linus Torvalds</a></li>

<li><a href="Theodore_Ts'o" title="Theodore Ts'o">Theodore Ts'o</a></li>

<li><a href="Stephen_Tweedie" title="Stephen Tweedie">Stephen Tweedie</a></li>

<li><a href="Harald_Welte" title="Harald Welte">Harald Welte</a></li>

<li><a href="Chris_Wright_(programmer)" title="Chris Wright (programmer)">Chris Wright</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Technical</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Debugging</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Ftrace" title="Ftrace">ftrace</a></li>

<li><a href="Kdump_(Linux)" title="Kdump (Linux)">kdump</a></li>

<li><a href="SystemTap" title="SystemTap">SystemTap</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Booting_process_of_Linux" title="Booting process of Linux">Startup</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Vmlinux" title="Vmlinux">vmlinux</a></li>

<li><a href="System.map" title="System.map">System.map</a></li>

<li><a href="Dracut_(software)" title="Dracut (software)">dracut</a></li>

<li><a href="Initrd" class="mw-redirect" title="Initrd">initrd</a></li>

<li><a href="Initramfs" class="mw-redirect" title="Initramfs">initramfs</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_kernel_interfaces" title="Linux kernel interfaces">ABIs</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Linux_Standard_Base" title="Linux Standard Base">Linux Standard Base</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_kernel_interfaces" title="Linux kernel interfaces">APIs</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Kernel</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_kernel_interfaces#SCI" title="Linux kernel interfaces">System Call<br>Interface</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="POSIX" title="POSIX">POSIX</a>

<ul><li><a href="Ioctl" title="Ioctl">ioctl</a></li>

<li><a href="Select_(Unix)" title="Select (Unix)">select</a></li>

<li><a href="Close_(system_call)" title="Close (system call)">close</a></li>

<li><a href="Linux_kernel_interfaces#Additions_to_POSIX" title="Linux kernel interfaces">Linux-only</a>

<ul><li><a href="Futex" title="Futex">futex</a></li>

<li><a href="Epoll" title="Epoll">epoll</a></li>

<li><a href="Splice_(system_call)" title="Splice (system call)">splice</a></li>

<li><a href="Dnotify" title="Dnotify">dnotify</a></li>

<li><a href="Inotify" title="Inotify">inotify</a></li>

<li><a href="Readahead" title="Readahead">readahead</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_kernel_interfaces#In–kernel_APIs" title="Linux kernel interfaces">In-kernel</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Crypto_API_(Linux)" title="Crypto API (Linux)">Crypto API</a></li>

<li><a href="Io_uring" title="Io uring">io uring</a></li>

<li><a href="Kernfs_(Linux)" title="Kernfs (Linux)">kernfs</a></li>

<li><a href="Memory_barrier" title="Memory barrier">Memory barrier</a></li>

<li><a href="Video4Linux" title="Video4Linux">Video4Linux</a></li>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="User_space_and_kernel_space" title="User space and kernel space">Userspace</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Daemon_(computing)" title="Daemon (computing)">Daemons</a>,<br><a href="Virtual_file_system" title="Virtual file system">File systems</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li>bpffs</li>

<li><a href="Configfs" title="Configfs">configfs</a></li>

<li><a href="Devfs" class="mw-redirect" title="Devfs">devfs</a></li>

<li><a href="Devpts" title="Devpts">devpts</a></li>

<li><a href="Debugfs" title="Debugfs">debugfs</a></li>

<li>hugetlbfs</li>

<li>pipefs</li>

<li><a href="Procfs" title="Procfs">procfs</a></li>

<li>securityfs</li>

<li>sockfs</li>

<li><a href="Sysfs" title="Sysfs">sysfs</a></li>

<li><a href="Tmpfs" title="Tmpfs">tmpfs</a></li>

<li><a href="Systemd" title="Systemd">systemd</a>

<li><a href="Kmscon" title="Kmscon">Kmscon</a></li>

<li><a href="Binfmt_misc" title="Binfmt misc">binfmt_misc</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Wrapper_library" title="Wrapper library">Wrapper<br>libraries</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="C_standard_library" title="C standard library">C standard library</a>

<ul><li><a href="Glibc" title="Glibc">glibc</a></li>

<li><a href="UClibc" title="UClibc">uClibc</a></li>

<li><a href="Bionic_(software)" title="Bionic (software)">Bionic</a>

<ul><li><a href="Libhybris" title="Libhybris">libhybris</a></li></ul></li>

<li><a href="Dietlibc" title="Dietlibc">dietlibc</a></li>

<li><a href="Embedded_GLIBC" class="mw-redirect" title="Embedded GLIBC">EGLIBC</a></li>

<li><a href="Klibc" title="Klibc">klibc</a></li>

<li><a href="Newlib" title="Newlib">Newlib</a></li></ul></li>

<li><a href="Cgroups" title="Cgroups">libcgroup</a></li>

<li><a href="Direct_Rendering_Manager" title="Direct Rendering Manager">libdrm</a></li>

<li><a href="Advanced_Linux_Sound_Architecture" title="Advanced Linux Sound Architecture">libalsa</a></li>

<li><a href="Evdev" title="Evdev">libevdev</a></li>

<li><a href="Libusb" title="Libusb">libusb</a></li>

<li><a href="Io_uring" title="Io uring">liburing</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Components</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Loadable_kernel_module" title="Loadable kernel module">Kernel modules</a></li>

<li><a href="BlueZ" class="mw-redirect" title="BlueZ">BlueZ</a></li>

<li><a href="Cgroups" title="Cgroups">cgroups</a></li>

<li><a href="Linux_console" title="Linux console">Console</a></li>

<li><a href="Bcache" title="Bcache">bcache</a></li>

<li><a href="Device_mapper" title="Device mapper">Device mapper</a></li>

<li><a href="Dm-cache" title="Dm-cache">dm-cache</a></li>

<li><a href="Dm-crypt" title="Dm-crypt">dm-crypt</a></li>

<li><a href="Evdev" title="Evdev">evdev</a></li>

<li><a href="Kernel_same-page_merging" title="Kernel same-page merging">Kernel same-page merging</a> (KSM)</li>

<li><a href="Linux_framebuffer" title="Linux framebuffer">Framebuffer</a></li>

<li><a href="KMS_driver" class="mw-redirect" title="KMS driver">KMS driver</a></li>

<li><a href="Netfilter" title="Netfilter">Netfilter</a></li>

<li><a href="Netlink" title="Netlink">Netlink</a></li>

<li><a href="Nftables" title="Nftables">nftables</a></li>

<li><a href="Network_scheduler" title="Network scheduler">Network scheduler</a></li>

<li><a href="Zswap" title="Zswap">zswap</a></li></ul>

<ul><li><a href="Scheduling_(computing)#Linux" title="Scheduling (computing)">Process and I/O schedulers</a>:</li>

<li><a href="Brain_Fuck_Scheduler" title="Brain Fuck Scheduler">Brain Fuck Scheduler</a></li>

<li><a href="Completely_Fair_Scheduler" title="Completely Fair Scheduler">Completely Fair Scheduler</a> (CFS)</li>

<li><a href="Earliest_eligible_virtual_deadline_first_scheduling" title="Earliest eligible virtual deadline first scheduling">Earliest eligible virtual deadline first</a> (EEVDF)</li>

<li><a href="Noop_scheduler" title="Noop scheduler">Noop scheduler</a></li>

<li><a href="O(n)_scheduler" title="O(n) scheduler">O(n) scheduler</a></li>

<li><a href="O(1)_scheduler" title="O(1) scheduler">O(1) scheduler</a></li>

<li><a href="SCHED_DEADLINE" title="SCHED DEADLINE">SCHED_DEADLINE</a></li>

<li><a href="SCHED_FIFO" class="mw-redirect" title="SCHED FIFO">SCHED_FIFO</a></li>

<li><a href="SCHED_RR" class="mw-redirect" title="SCHED RR">SCHED_RR</a></li></ul>

<ul><li><a href="Linux_Security_Modules" title="Linux Security Modules">Security Modules</a>: <a href="AppArmor" title="AppArmor">AppArmor</a></li>

<li><a href="Exec_Shield" title="Exec Shield">Exec Shield</a></li>

<li><a href="Seccomp" title="Seccomp">seccomp</a></li>

<li><a href="Security-Enhanced_Linux" title="Security-Enhanced Linux">SELinux</a></li>

<li><a href="Smack_(software)" title="Smack (software)">Smack</a></li>

<li><a href="Tomoyo_Linux" title="Tomoyo Linux">Tomoyo Linux</a></li>

<li><a href="Linux_PAM" title="Linux PAM">Linux PAM</a></li></ul>

<ul><li><a href="Device_driver" title="Device driver">Device drivers</a>

<li><a href="Free_and_open-source_graphics_device_driver" title="Free and open-source graphics device driver">graphics</a></li></ul></li>

<li><a href="Raw_device" title="Raw device">Raw device</a></li></ul>

<ul><li><a href="Initramfs" class="mw-redirect" title="Initramfs">initramfs</a></li>

<li><a href="KernelCare" title="KernelCare">KernelCare</a></li>

<li><a href="Kexec" title="Kexec">kexec</a></li>

<li><a href="KGraft" title="KGraft">kGraft</a></li>

<li><a href="Kpatch" title="Kpatch">kpatch</a></li>

<li><a href="Ksplice" title="Ksplice">Ksplice</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Variants</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Mainline_Linux" class="mw-redirect" title="Mainline Linux">Mainline</a>

<ul><li><a href="Linux_kernel" title="Linux kernel">Linux kernel</a></li>

<li><a href="Linux-libre" title="Linux-libre">Linux-libre</a></li></ul></li>

<li><a href="High-performance_computing" title="High-performance computing">High-performance computing</a>

<li><a href="Compute_Node_Linux" title="Compute Node Linux">Compute Node Linux</a></li>

<li><a href="Slurm_Workload_Manager" title="Slurm Workload Manager">SLURM</a></li></ul></li>

<li><a href="Real-time_computing" title="Real-time computing">Real-time computing</a>

<ul><li><a href="RTLinux" title="RTLinux">RTLinux</a></li>

<li><a href="Xenomai" title="Xenomai">Xenomai</a></li>

<li><a href="PREEMPT_RT" title="PREEMPT RT">PREEMPT_RT</a></li></ul></li>

<li><a href="Memory_management_unit" title="Memory management unit">MMU</a>-less

<ul><li><a href="%CE%9CClinux" title="ΜClinux">μClinux</a></li>

<li><a href="PSXLinux" title="PSXLinux">PSXLinux</a></li></ul></li></ul>

</div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Virtualization18" scope="row" class="navbox-group" style="width:1%"><a href="Virtualization" title="Virtualization">Virtualization</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Hypervisor" title="Hypervisor">Hypervisor</a>

<li><a href="OS-level_virtualization" title="OS-level virtualization">OS-level virtualization</a>

<ul><li><a href="Linux-VServer" title="Linux-VServer">Linux-VServer</a></li>

<li><a href="Lguest" title="Lguest">Lguest</a></li>

<li><a href="OpenVZ" title="OpenVZ">OpenVZ</a></li></ul></li>

<li>Other

<ul><li><a href="L4Linux" title="L4Linux">L4Linux</a></li>

<li><a href="User-mode_Linux" title="User-mode Linux">User-mode Linux</a></li>

<li><a href="MkLinux" title="MkLinux">MkLinux</a></li>

<li><a href="Cooperative_Linux" title="Cooperative Linux">coLinux</a></li></ul></li></ul>

</div></td></tr></tbody></table><div>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_adoption" title="Linux adoption">Adoption</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Rangeof_use48" scope="row" class="navbox-group" style="width:1%"><a href="Linux_range_of_use" title="Linux range of use">Range<br>of use</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Linux_desktop_environments" class="mw-redirect" title="Linux desktop environments">Desktop</a></li>

<li><a href="Linux_on_embedded_systems" title="Linux on embedded systems">Embedded</a></li>

<li><a href="Video_games_and_Linux" title="Video games and Linux">Gaming</a></li>

<li>Thin client:

<li>Server:

<li><a href="Linux-powered_device" title="Linux-powered device">Devices</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Adopters</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="List_of_Linux_adopters" title="List of Linux adopters">List of Linux adopters</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>

<ul><li><b><span class="nowrap"><span class="noviewer" typeof="mw:File"></span> </span><a href="Portal%3ALinux" title="Portal:Linux">Linux portal</a></b></li>

<li><b><span class="nowrap"><span class="noviewer" typeof="mw:File"><span></span></span> </span><a href="Portal%3AFree_and_open-source_software" title="Portal:Free and open-source software">Free and open-source software portal</a></b></li>

<li><span class="noviewer" typeof="mw:File"><span title="Category"></span></span> <b>Category</b></li></ul>

</div></td></tr></tbody></table></div>

<div class="navbox-styles"></div><div role="navigation" class="navbox" aria-labelledby="Linux634" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Linux634" style="font-size:114%;margin:0 4em"><a href="Linux" title="Linux">Linux</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_kernel" title="Linux kernel">Linux kernel</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="History_of_Linux" title="History of Linux">History</a></li>

<li><a href="Linus's_law" title="Linus's law">Linus's law</a></li>

<li><a href="Linux-libre" title="Linux-libre">Linux-libre</a></li>

<li><a href="Booting_process_of_Linux" title="Booting process of Linux">Booting process</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Controversies</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Criticism_of_Linux" title="Criticism of Linux">Criticism of Linux</a></li>

<li><a href="Criticism_of_desktop_Linux" title="Criticism of desktop Linux">Criticism of desktop Linux</a></li>

<li><a href="GNU/Linux_naming_controversy" title="GNU/Linux naming controversy">GNU/Linux naming controversy</a></li>

<li><a href="Tanenbaum%E2%80%93Torvalds_debate" title="Tanenbaum–Torvalds debate">Tanenbaum–Torvalds debate</a></li>

<li><a href="SCO%E2%80%93Linux_disputes" title="SCO–Linux disputes">SCO and Linux</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_distribution" title="Linux distribution">Distributions</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Comparison_of_Linux_distributions" title="Comparison of Linux distributions">General comparison</a></li>

<li><a href="List_of_Linux_distributions" title="List of Linux distributions">Distributions list</a></li>

<li><a href="Comparison_of_netbook-oriented_Linux_distributions" title="Comparison of netbook-oriented Linux distributions">Netbook-specific comparison</a></li>

<li><a href="List_of_Linux_distributions_that_run_from_RAM" title="List of Linux distributions that run from RAM">Distributions that run from RAM</a></li>

<li><a href="Light-weight_Linux_distribution" class="mw-redirect" title="Light-weight Linux distribution">Lightweight</a></li>

<li><a href="Security-focused_operating_system#Linux" title="Security-focused operating system">Security-focused operating system</a></li>

<li><a href="Package_manager" title="Package manager">Package manager</a>

<ul><li><a href="Package_format" title="Package format">Package format</a></li>

<li><a href="List_of_software_package_management_systems" title="List of software package management systems">List of software package managers</a></li></ul></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Organizations</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="LinuxChix" title="LinuxChix">LinuxChix</a></li>

<li><a href="Linux_Counter" title="Linux Counter">Linux Counter</a></li>

<li><a href="Linux_Documentation_Project" title="Linux Documentation Project">Linux Documentation Project</a></li>

<li><a href="Linux_Foundation" title="Linux Foundation">Linux Foundation</a></li>

<li><a href="Linux_Mark_Institute" title="Linux Mark Institute">Linux Mark Institute</a></li>

<li><a href="Linux_user_group" title="Linux user group">Linux User Group (LUG)</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_adoption" title="Linux adoption">Adoption</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="List_of_Linux_adopters" title="List of Linux adopters">Adopters</a></li>

<li><a href="Linux_desktop_environments" class="mw-redirect" title="Linux desktop environments">Desktop</a></li>

<li><a href="Linux_on_embedded_systems" title="Linux on embedded systems">Embedded</a></li>

<li><a href="Linux_gaming" class="mw-redirect" title="Linux gaming">Gaming</a></li>

<li><a href="Linux_for_mobile_devices" title="Linux for mobile devices">Mobile</a></li>

<li><a href="Linux_range_of_use" title="Linux range of use">Range of use</a></li>

<li><a href="Linux_malware" title="Linux malware">Linux malware</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Media</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="DistroWatch" title="DistroWatch">DistroWatch</a></li>

<li><i><a href="Free_Software_Magazine" title="Free Software Magazine">Free Software Magazine</a></i></li>

<li><i><a href="Full_Circle_(magazine)" title="Full Circle (magazine)">Full Circle</a></i></li>

<li><a href="Linux.com" title="Linux.com">Linux.com</a></li>

<li><i><a href="Linux_Format" title="Linux Format">Linux Format</a></i></li>

<li><i><a href="Linux_Gazette" title="Linux Gazette">Linux Gazette</a></i></li>

<li><i><a href="Linux_Journal" title="Linux Journal">Linux Journal</a></i></li>

<li><i><a href="Linux_Magazine" title="Linux Magazine">Linux Magazine</a></i></li>

<li><i><a href="LinuxUser" title="LinuxUser">LinuxUser</a></i>

<ul><li><i><a href="Ubuntu_User" title="Ubuntu User">Ubuntu User</a></i></li></ul></li>

<li><a href="Linux_Outlaws" title="Linux Outlaws">Linux Outlaws</a></li>

<li><i><a href="Linux_Voice" title="Linux Voice">Linux Voice</a></i></li>

<li><a href="LugRadio" title="LugRadio">LugRadio</a></li>

<li><a href="Phoronix_Test_Suite#Phoronix_website" title="Phoronix Test Suite">Phoronix</a></li>

<li><i><a href="Revolution_OS" title="Revolution OS">Revolution OS</a></i></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="List_of_computer_security_certifications" title="List of computer security certifications">Security<br>certifications</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="CompTIA_Linux%2B" class="mw-redirect" title="CompTIA Linux+">CompTIA Linux+</a></li>

<li><a href="Linux_Foundation_Linux_Certification" class="mw-redirect" title="Linux Foundation Linux Certification">Linux Foundation</a></li>

</div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>

<ul><li><b><span class="nowrap"><span class="noviewer" typeof="mw:File"></span> </span><a href="Portal%3ALinux" title="Portal:Linux">Linux portal</a></b></li>

<li><span class="noviewer" typeof="mw:File"><span title="Category"></span></span> <b>Category</b></li></ul>

</div></td></tr></tbody></table></div>

<div class="navbox-styles"></div><div role="navigation" class="navbox" aria-labelledby="Error_messages90" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Error_messages90" style="font-size:114%;margin:0 4em"><a href="Error_message" title="Error message">Error messages</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">System failure</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Fatal_system_error" title="Fatal system error">Fatal system error</a></li>

<li><a href="Guru_Meditation" title="Guru Meditation">Guru Meditation</a></li>

<li><a href="Kernel_panic" title="Kernel panic">Kernel panic</a></li>

<li><a href="Xbox_360_technical_problems" title="Xbox 360 technical problems">Red Ring of Death</a></li>

<li><a href="Screen_of_death" class="mw-redirect" title="Screen of death">Screen of death</a>

<li><a href="Black_screen_of_death" title="Black screen of death">Black</a></li></ul></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Application failure</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Abnormal_end" class="mw-redirect" title="Abnormal end">ABEND</a></li>

<li><a href="Fatal_exception_error" title="Fatal exception error">Fatal exception error</a></li>

<li><a href="Segmentation_fault" title="Segmentation fault">Segmentation fault</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Device and data errors</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Not_a_typewriter" title="Not a typewriter">Not a typewriter</a></li>

<li><a href="PC_LOAD_LETTER" title="PC LOAD LETTER">PC LOAD LETTER</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Abort%2C_Retry%2C_Fail%3F" title="Abort, Retry, Fail?">Abort, Retry, Fail?</a></li>

<li><a href="Bad_command_or_file_name" title="Bad command or file name">Bad command or file name</a></li>

<li><a href="Halt_and_Catch_Fire_(computing)" title="Halt and Catch Fire (computing)">Halt and Catch Fire</a></li>

<li><a href="Out_of_memory" title="Out of memory">Out of memory</a></li>

<li><a href="Does_not_compute" title="Does not compute">Does not compute</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Lists</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="List_of_HTTP_status_codes" title="List of HTTP status codes">List of HTTP status codes</a></li>

<li><a href="List_of_FTP_server_return_codes" title="List of FTP server return codes">List of FTP server return codes</a></li>

<li><a href="List_of_SMTP_server_return_codes" title="List of SMTP server return codes">List of SMTP server return codes</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Spinning_pinwheel" title="Spinning pinwheel">Spinning pinwheel</a></li>

<li><a href="Windows_wait_cursor" title="Windows wait cursor">Windows wait cursor</a></li>

<li><a href="2024_CrowdStrike-related_IT_outages" title="2024 CrowdStrike-related IT outages">2024 CrowdStrike-related IT outages</a></li></ul>

</div></td></tr></tbody></table></div></div><div><div class="zim-footer">

This article is issued from <a class="external text" title="Last edited on 2024-12-03" href="https://en.wikipedia.org/wiki/?title=Linux_kernel_oops&oldid=1260963592">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.

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