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| author | Al Viro <viro@zeniv.linux.org.uk> | 2023-01-31 08:03:40 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2023-03-02 20:32:19 +0300 |
| commit | 79c54c97c7735e09f9e2193a713f30e56eec00dc (patch) | |
| tree | 926d7e247c867930c355e6e0df114652e8500990 /LICENSES | |
| parent | dce45493aff3fdd57fed2a0da264e585dba88433 (diff) | |
| download | linux-79c54c97c7735e09f9e2193a713f30e56eec00dc.tar.xz | |
sparc: fix livelock in uaccess
sparc 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 <viro@zeniv.linux.org.uk>
Diffstat (limited to 'LICENSES')
0 files changed, 0 insertions, 0 deletions