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| author | Tamas Vincze <tom@vincze.org> | 2010-01-15 17:01:10 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-01-28 15:20:01 -0800 |
| commit | 3282903d24c660f40f497d868fce151448320715 (patch) | |
| tree | 566147c02c6c4f7265172ab85ec14d99e9290d6f /drivers | |
| parent | 70d6a219673f4e7c48e0487e8f83dfb2811a1ad8 (diff) | |
| download | lwn-3282903d24c660f40f497d868fce151448320715.tar.gz lwn-3282903d24c660f40f497d868fce151448320715.zip | |
edac: i5000_edac critical fix panic out of bounds
commit 118f3e1afd5534c15f9701f33514186cfc841a27 upstream.
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -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 4a16b5b61cfb..d4297dcdfe8a 100644 --- a/drivers/edac/i5000_edac.c +++ b/drivers/edac/i5000_edac.c @@ -566,7 +566,13 @@ 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); |