Dynamic Tracing Tools for Linux: BCC

BCC – BPF Compiler Collection – is a toolkit for creating efficient kernel tracing and manipulation programs, and includes several useful tools and examples. It makes use of eBPF Extended Berkeley Packet Filters, a new feature that was first added to Linux 3.15. Much of what BCC uses requires Lin...

Kernel: tracing: NULL pointer dereference

The ftrace implementation in the Linux kernel before 3.8.8 allows local users to cause a denial of service NULL pointer dereference and system crash or possibly have unspecified other impact by leveraging the CAPSYSADMIN capability for write access to the 1 setftracepid or 2 setgraphfunction file...

Kernel: tracing: NULL pointer dereference

The ftrace implementation in the Linux kernel before 3.8.8 allows local users to cause a denial of service NULL pointer dereference and system crash or possibly have unspecified other impact by leveraging the CAPSYSADMIN capability for write access to the 1 setftracepid or 2 setgraphfunction file...