[Bug analyzer/107472] New: Support for the Linux kernel's memory-management APIs

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107472

            Bug ID: 107472
           Summary: Support for the Linux kernel's memory-management APIs
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: analyzer
          Assignee: dmalcolm at gcc dot gnu.org
          Reporter: dmalcolm at gcc dot gnu.org
        Depends on: 106302
            Blocks: 106358
  Target Milestone: ---

A suggestion at LPC 2022 was that -fanalyzer could gain knowledge (perhaps via
a plugin) about the behavior of the Linux kernel's memory allocation routines.

See https://www.kernel.org/doc/html/latest/core-api/memory-allocation.html

In particular, note the GPF flags; there seem to be a bunch of contextual rules
about which flags should be set, which perhaps a -fanalyzer plugin could
enforce.  Grokking all these flags seems like another instance of PR 106302.

Plus we ought to do sm-malloc.cc-style checking for leaks, double-free, etc.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106302
[Bug 106302] RFE: provide a way for -fanalyzer to use target flags
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106358
[Bug 106358] [meta-bug] tracker bug for building the Linux kernel with
-fanalyzer