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| author | Al Viro <[email protected]> | 2023-01-31 04:52:40 +0000 |
|---|---|---|
| committer | Al Viro <[email protected]> | 2023-03-02 17:32:44 +0000 |
| commit | caa82ae7ef52b7cf5f80a2b2fbcbdbcfd16426cc (patch) | |
| tree | fe59f45376e19cd3bcaa3e6362ff9a4216bbe3f4 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | nios2: fix livelock in uaccess (diff) | |
| download | kernel-caa82ae7ef52b7cf5f80a2b2fbcbdbcfd16426cc.tar.gz kernel-caa82ae7ef52b7cf5f80a2b2fbcbdbcfd16426cc.zip | |
openrisc: fix livelock in uaccess
openrisc equivalent of 26178ec11ef3 "x86: mm: consolidate VM_FAULT_RETRY handling"
If e.g. get_user() triggers a page fault and a fatal signal is caught, we might
end up with handle_mm_fault() returning VM_FAULT_RETRY and not doing anything
to page tables. In such case we must *not* return to the faulting insn -
that would repeat the entire thing without making any progress; what we need
instead is to treat that as failed (user) memory access.
Signed-off-by: Al Viro <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions