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authorTrond Myklebust <trond.myklebust@primarydata.com>2016-07-24 17:09:02 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2016-07-24 17:09:02 -0400
commit1592c4d62a89bbca895c568d65ce290dfbc36ecc (patch)
tree6b979bc02ded2ea7e644c34e6939ffbbb7ee001d /arch/arm64/mm/fault.c
parent668f455dac57050e33a43ff5fe006f6cd947fc65 (diff)
parentf0445670bd81cae9f46399d98fef5cd1622d9776 (diff)
Merge branch 'nfs-rdma'
Diffstat (limited to 'arch/arm64/mm/fault.c')
-rw-r--r--arch/arm64/mm/fault.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 013e2cbe7924..b1166d1e5955 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -280,7 +280,8 @@ static int __kprobes do_page_fault(unsigned long addr, unsigned int esr,
}
if (permission_fault(esr) && (addr < USER_DS)) {
- if (get_fs() == KERNEL_DS)
+ /* regs->orig_addr_limit may be 0 if we entered from EL0 */
+ if (regs->orig_addr_limit == KERNEL_DS)
die("Accessing user space memory with fs=KERNEL_DS", regs, esr);
if (!search_exception_tables(regs->pc))