aboutsummaryrefslogtreecommitdiffstats
path: root/arch/parisc
diff options
context:
space:
mode:
authorEric W. Biederman <ebiederm@xmission.com>2018-04-19 19:09:59 -0500
committerEric W. Biederman <ebiederm@xmission.com>2018-04-25 10:44:05 -0500
commitc2b0e0d33b5573d4cb426e9c3ddbf2aad5e1d8a7 (patch)
treed16f0bed4ca02e15b2e46d133f2f73577b82cda6 /arch/parisc
parentsignal/openrisc: Use force_sig_fault where appropriate (diff)
downloadlinux-dev-c2b0e0d33b5573d4cb426e9c3ddbf2aad5e1d8a7.tar.xz
linux-dev-c2b0e0d33b5573d4cb426e9c3ddbf2aad5e1d8a7.zip
signal/parisc: Use force_sig_mceerr where appropriate
In do_page_fault where an mceerr is generated stop and call force_sig_mceerr. Keeping the mcerr handling logic out of the force_sig_info call below. This ensures that only and always in the mcerr case is lsb interesting. This ensures setting set si_lsb in the future won't accidentally stomp another siginfo field in the non mcerr case. Cc: James Bottomley <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: linux-parisc@vger.kernel.org Acked-by: Helge Deller <deller@gmx.de> # parisc Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/mm/fault.c30
1 files changed, 15 insertions, 15 deletions
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index 657b35096bd8..51215b0048ef 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -354,7 +354,6 @@ bad_area:
if (user_mode(regs)) {
struct siginfo si;
- unsigned int lsb = 0;
clear_siginfo(&si);
switch (code) {
@@ -391,26 +390,27 @@ bad_area:
#ifdef CONFIG_MEMORY_FAILURE
if (fault & (VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) {
+ unsigned int lsb = 0;
printk(KERN_ERR
"MCE: Killing %s:%d due to hardware memory corruption fault at %08lx\n",
tsk->comm, tsk->pid, address);
- si.si_signo = SIGBUS;
- si.si_code = BUS_MCEERR_AR;
+ /*
+ * Either small page or large page may be poisoned.
+ * In other words, VM_FAULT_HWPOISON_LARGE and
+ * VM_FAULT_HWPOISON are mutually exclusive.
+ */
+ if (fault & VM_FAULT_HWPOISON_LARGE)
+ lsb = hstate_index_to_shift(VM_FAULT_GET_HINDEX(fault));
+ else if (fault & VM_FAULT_HWPOISON)
+ lsb = PAGE_SHIFT;
+
+ force_sig_mceerr(BUS_MCEERR_AR, (void __user *) address,
+ lsb, current);
+ return;
}
#endif
- /*
- * Either small page or large page may be poisoned.
- * In other words, VM_FAULT_HWPOISON_LARGE and
- * VM_FAULT_HWPOISON are mutually exclusive.
- */
- if (fault & VM_FAULT_HWPOISON_LARGE)
- lsb = hstate_index_to_shift(VM_FAULT_GET_HINDEX(fault));
- else if (fault & VM_FAULT_HWPOISON)
- lsb = PAGE_SHIFT;
- else
- show_signal_msg(regs, code, address, tsk, vma);
- si.si_addr_lsb = lsb;
+ show_signal_msg(regs, code, address, tsk, vma);
si.si_errno = 0;
si.si_addr = (void __user *) address;