[llvm-bugs] [Bug 47735] New: [clang-11] kernel panic with CONFIG_PREEMPT

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47735

            Bug ID: 47735
           Summary: [clang-11] kernel panic with CONFIG_PREEMPT
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Common Code Generator Code
          Assignee: unassignedbugs at nondot.org
          Reporter: ndesaulniers at google.com
                CC: elver at google.com, hans at chromium.org,
                    isanbard at gmail.com, jyknight at google.com,
                    llvm-bugs at lists.llvm.org, srhines at google.com
            Blocks: 4068, 46725

>From initial report: https://github.com/ClangBuiltLinux/linux/issues/1125

Seems to be a clang-11 regression.  We have identified the bug, and have a
patch under review in https://reviews.llvm.org/D88823.

Hans, marking this a blocker.  Would be nice to avoid this regression; it's a
panic for non-default (not very common IMO) Linux kernel configuration, but it
may block syzkaller kernel fuzzing of clang-11 built kernels.


Referenced Bugs:

https://bugs.llvm.org/show_bug.cgi?id=4068
[Bug 4068] [Meta] Compiling the Linux kernel with clang
https://bugs.llvm.org/show_bug.cgi?id=46725
[Bug 46725] [meta] 11.0.0 Release Blockers
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