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authorLinus Torvalds <torvalds@linux-foundation.org>2018-02-01 13:15:23 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-01 13:15:23 -0800
commit27529c891b132f4fc65711334e885f466138ea2a (patch)
treeff21f3a06613638d83fe0280f7761ae73addd9ca /include/uapi/linux
parent8e44e6600caa7b96a5b71ae36c8829db753c2d70 (diff)
parent841a915d20c7b22fc4f36f12368daf94d9f8cb10 (diff)
Merge tag 'trace-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt: "There's not much changes for the tracing system this release. Mostly small clean ups and fixes. The biggest change is to how bprintf works. bprintf is used by trace_printk() to just save the format and args of a printf call, and the formatting is done when the trace buffer is read. This is done to keep the formatting out of the fast path (this was recommended by you). The issue is when arguments are de-referenced. If a pointer is saved, and the format has something like "%*pbl", when the buffer is read, it will de-reference the argument then. The problem is if the data no longer exists. This can cause the kernel to oops. The fix for this was to make these de-reference pointes do the formatting at the time it is called (the fast path), as this guarantees that the data exists (and doesn't change later)" * tag 'trace-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: vsprintf: Do not have bprintf dereference pointers ftrace: Mark function tracer test functions noinline/noclone trace_uprobe: Display correct offset in uprobe_events tracing: Make sure the parsed string always terminates with '\0' tracing: Clear parser->idx if only spaces are read tracing: Detect the string nul character when parsing user input string
Diffstat (limited to 'include/uapi/linux')
0 files changed, 0 insertions, 0 deletions

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