linux-stable/arch/hexagon/mm
Al Viro 0b92ed09cb hexagon: fix livelock in uaccess
hexagon equivalent of 26178ec11e "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.

Acked-by: Brian Cain <bcain@quicinc.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2023-03-02 12:30:21 -05:00
..
cache.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267 2019-06-05 17:30:29 +02:00
copy_from_user.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267 2019-06-05 17:30:29 +02:00
copy_to_user.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267 2019-06-05 17:30:29 +02:00
copy_user_template.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267 2019-06-05 17:30:29 +02:00
init.c hexagon/mm: enable ARCH_HAS_VM_GET_PAGE_PROT 2022-07-17 17:14:39 -07:00
ioremap.c hexagon: remove __iounmap 2019-11-11 21:18:19 +01:00
Makefile hexagon: use generic strncpy/strnlen from_user 2021-07-23 14:40:00 +02:00
uaccess.c mm: introduce include/linux/pgtable.h 2020-06-09 09:39:13 -07:00
vm_fault.c hexagon: fix livelock in uaccess 2023-03-02 12:30:21 -05:00
vm_tlb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267 2019-06-05 17:30:29 +02:00