** Description changed:
[Impact]
- TBD
+ When an ARM-specific platform error (CPER) comes occurs, the kernel will emit
an error with an opaque hex error type. The user would then need to consult the
UEFI specification to decode it. It would be better to actually do the decoding
for the user directly.
[Test Case]
- TBD
+ On a server that supports EINJ, generate a fake CE (thanks to Tyler Baicar
for this example):
+
+ modprobe einj
+ echo 0x12345000 > /sys/kernel/debug/apei/einj/param1
+ echo $((-1 << 12)) > /sys/kernel/debug/apei/einj/param2
+ echo 5 > /sys/kernel/debug/apei/einj/param3
+ echo 0x3 > /sys/kernel/debug/apei/einj/flags
+ echo 0x1 > /sys/kernel/debug/apei/einj/error_type
+ echo 1 > /sys/kernel/debug/apei/einj/error_inject
+
+ In the output, look for a decoded message. Without this fix, you'll see:
+ [ 388.094304] {2}[Hardware Error]: error_info: 0x0000000004c6007f
+ [ 388.094341] {2}[Hardware Error]: physical fault address:
0x0000000012345000
+
+ But with the fix, you'll see:
+
+ [ 388.094304] {2}[Hardware Error]: error_info: 0x0000000004c6007f
+ [ 388.094317] {2}[Hardware Error]: transaction type: Generic
+ [ 388.094322] {2}[Hardware Error]: operation type: Generic read (type of
instruction or data request cannot be determined)
+ [ 388.094326] {2}[Hardware Error]: cache level: 3
+ [ 388.094330] {2}[Hardware Error]: processor context not corrupted
+ [ 388.094333] {2}[Hardware Error]: the error has been corrected
+ [ 388.094337] {2}[Hardware Error]: PC is imprecise
+ [ 388.094341] {2}[Hardware Error]: physical fault address:
0x0000000012345000
+
[Fix]
+ These upstream fixes add ARM decoding support:
+
c6d8c8ef1d0d94fdae9f5d72982963db89f9cdad efi: Move ARM CPER code to new
file
301f55b1a9177132d2b9ce8a90bf0ae4b37bb850 efi: Parse ARM error
information value
[Regression Risk]
- TBD
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https://bugs.launchpad.net/bugs/1770244
Title:
Decode ARM CPER records in kernel
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