Dmesg Read Kernel Buffer Failed Operation Not Permitted

Dmesg Read Kernel Buffer Failed Operation Not Permitted. How to View Kernel Messages in Linux dmesg Command dmesg -c requires root (strictly speaking, CAP_SYS_ADMIN or CAP_SYSLOG) in all cases: (1722741231.489:899): apparmor="DENIED" operation="open" class.

这可以通过修改内核参数 kernel.dmesg_restrict 来解决。 你可以尝试以下命令来允许非特权用户读取内核日志： sudo sysctl-w kernel.dmesg_restrict = 0 dmesg -c requires root (strictly speaking, CAP_SYS_ADMIN or CAP_SYSLOG) in all cases:

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It outputs: dmesg: read kernel buffer failed: Operation not permitted With older kernels, this worked fine as non-root. Not sure when it became so, might be in recent updates Welcome to the Linux Foundation Forum! dmesg: read kernel buffer failed: Operation not permitted

Matthew Ruffell · Security Researcher. 这可以通过修改内核参数 kernel.dmesg_restrict 来解决。 你可以尝试以下命令来允许非特权用户读取内核日志： sudo sysctl-w kernel.dmesg_restrict = 0 dmesg_restrict only controls access to "read all" and "size"; setting it to 1 restricts them to root, setting it to 0 makes them available to non-root processes.

¿Qué hace y cómo se usa el Comando DMESG? (para verificar errores). Re: Bug#842226: dmesg: read kernel buffer failed: Operation not permitted; Part of the changelog from the aforementioned kernel: security,printk: Enable SECURITY_DMESG_RESTRICT, preventing non-root users reading the kernel log by default (sysctl: kernel.dmesg_restrict) So the solution is simply to run once: This is explained in man 2 syslog: all syslog commands except for "read all" and "size" are available only to root