Searched hist:caa82ae7ef52b7cf5f80a2b2fbcbdbcfd16426cc (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/arch/openrisc/mm/ |
| H A D | fault.c | diff caa82ae7ef52b7cf5f80a2b2fbcbdbcfd16426cc Mon Jan 30 22:52:40 CST 2023 Al Viro <viro@zeniv.linux.org.uk> 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 <viro@zeniv.linux.org.uk>
|