diff options
| author | Al Viro <[email protected]> | 2023-01-31 04:48:54 +0000 |
|---|---|---|
| committer | Al Viro <[email protected]> | 2023-03-02 17:30:08 +0000 |
| commit | bd75497a77ccae9a5e1b0f1a3fa8283d67b21f4c (patch) | |
| tree | 81397d2da394c3c03d59ce974611336f2f033d0c /tools/perf/scripts/python/sctop.py | |
| parent | Linux 6.2 (diff) | |
| download | kernel-bd75497a77ccae9a5e1b0f1a3fa8283d67b21f4c.tar.gz kernel-bd75497a77ccae9a5e1b0f1a3fa8283d67b21f4c.zip | |
m68k: fix livelock in uaccess
m68k 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.
Tested-by: Finn Thain <[email protected]>
Tested-by: Geert Uytterhoeven <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Signed-off-by: Al Viro <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/sctop.py')
0 files changed, 0 insertions, 0 deletions