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author | Al Viro <viro@zeniv.linux.org.uk> | 2023-01-31 07:52:40 +0300 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2023-03-02 20:32:44 +0300 |
commit | caa82ae7ef52b7cf5f80a2b2fbcbdbcfd16426cc (patch) | |
tree | fe59f45376e19cd3bcaa3e6362ff9a4216bbe3f4 /arch/arm/mach-bcm/bcm_nsp.c | |
parent | e902e508c5b280488c62f119a05ad88f9f7eb1cb (diff) | |
download | linux-caa82ae7ef52b7cf5f80a2b2fbcbdbcfd16426cc.tar.xz |
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>
Diffstat (limited to 'arch/arm/mach-bcm/bcm_nsp.c')
0 files changed, 0 insertions, 0 deletions