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| author | Tamas Vincze <tom@vincze.org> | 2010-01-15 17:01:10 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-01-16 12:15:38 -0800 |
| commit | 118f3e1afd5534c15f9701f33514186cfc841a27 (patch) | |
| tree | 4fd1c6333ba941125650712cbd5f9532063dc8e4 /drivers/edac/i5000_edac.c | |
| parent | 355e8e8d1b0779fccb6ca1351fb73c71985e22b2 (diff) | |
| download | lwn-118f3e1afd5534c15f9701f33514186cfc841a27.tar.gz lwn-118f3e1afd5534c15f9701f33514186cfc841a27.zip | |
edac: i5000_edac critical fix panic out of bounds
EDAC MC0: INTERNAL ERROR: channel-b out of range (4 >= 4)
Kernel panic - not syncing: EDAC MC0: Uncorrected Error (XEN) Domain 0 crashed: 'noreboot' set - not rebooting.
This happens because FERR_NF_FBD bit 28 is not updated on i5000. Due to
that, both bits 28 and 29 may be equal to one, returning channel = 3. As
this value is invalid, EDAC core generates the panic.
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=14568
Signed-off-by: Tamas Vincze <tom@vincze.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Doug Thompson <dougthompson@xmission.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/edac/i5000_edac.c')
| -rw-r--r-- | drivers/edac/i5000_edac.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/edac/i5000_edac.c b/drivers/edac/i5000_edac.c index 77a9579d7167..adc10a2ac5f6 100644 --- a/drivers/edac/i5000_edac.c +++ b/drivers/edac/i5000_edac.c @@ -577,7 +577,13 @@ static void i5000_process_nonfatal_error_info(struct mem_ctl_info *mci, debugf0("\tUncorrected bits= 0x%x\n", ue_errors); branch = EXTRACT_FBDCHAN_INDX(info->ferr_nf_fbd); - channel = branch; + + /* + * According with i5000 datasheet, bit 28 has no significance + * for errors M4Err-M12Err and M17Err-M21Err, on FERR_NF_FBD + */ + channel = branch & 2; + bank = NREC_BANK(info->nrecmema); rank = NREC_RANK(info->nrecmema); rdwr = NREC_RDWR(info->nrecmema); |