From bb31b3122c0dd07d2d958da17a50ad771ce79e2b Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Thu, 2 Dec 2010 17:48:35 +0100 Subject: EDAC: Fix workqueue-related crashes 00740c58541b6087d78418cebca1fcb86dc6077d changed edac_core to un-/register a workqueue item only if a lowlevel driver supplies a polling routine. Normally, when we remove a polling low-level driver, we go and cancel all the queued work. However, the workqueue unreg happens based on the ->op_state setting, and edac_mc_del_mc() sets this to OP_OFFLINE _before_ we cancel the work item, leading to NULL ptr oops on the workqueue list. Fix it by putting the unreg stuff in proper order. Cc: #36.x Reported-and-tested-by: Tobias Karnat LKML-Reference: <1291201307.3029.21.camel@Tobias-Karnat> Signed-off-by: Borislav Petkov --- drivers/edac/edac_mc.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index ba6586a69ccc..795ea69c4d8f 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -586,14 +586,16 @@ struct mem_ctl_info *edac_mc_del_mc(struct device *dev) return NULL; } - /* marking MCI offline */ - mci->op_state = OP_OFFLINE; - del_mc_from_global_list(mci); mutex_unlock(&mem_ctls_mutex); - /* flush workq processes and remove sysfs */ + /* flush workq processes */ edac_mc_workq_teardown(mci); + + /* marking MCI offline */ + mci->op_state = OP_OFFLINE; + + /* remove from sysfs */ edac_remove_sysfs_mci_device(mci); edac_printk(KERN_INFO, EDAC_MC, -- cgit v1.2.3 From 76f04f2591e60fa76e70a2736965bc810bf1c764 Mon Sep 17 00:00:00 2001 From: Andrei Konovalov Date: Tue, 7 Dec 2010 07:48:00 -0500 Subject: EDAC: Correct MiB_TO_PAGES() macro This corrects the misprint introduced when moving '#if PAGE_SHIFT' from i7core_edac.c to edac_core.h (commit e9144601d364d5b81f3e63949337f8507eb58dca) Cc: Mauro Carvalho Chehab Signed-off-by: Andrei Konovalov Signed-off-by: Borislav Petkov --- drivers/edac/edac_core.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h index d7ca43a828bd..251440cd50a3 100644 --- a/drivers/edac/edac_core.h +++ b/drivers/edac/edac_core.h @@ -41,10 +41,10 @@ #define MC_PROC_NAME_MAX_LEN 7 #if PAGE_SHIFT < 20 -#define PAGES_TO_MiB( pages ) ( ( pages ) >> ( 20 - PAGE_SHIFT ) ) -#define MiB_TO_PAGES(mb) ((mb) >> (20 - PAGE_SHIFT)) +#define PAGES_TO_MiB(pages) ((pages) >> (20 - PAGE_SHIFT)) +#define MiB_TO_PAGES(mb) ((mb) << (20 - PAGE_SHIFT)) #else /* PAGE_SHIFT > 20 */ -#define PAGES_TO_MiB( pages ) ( ( pages ) << ( PAGE_SHIFT - 20 ) ) +#define PAGES_TO_MiB(pages) ((pages) << (PAGE_SHIFT - 20)) #define MiB_TO_PAGES(mb) ((mb) >> (PAGE_SHIFT - 20)) #endif -- cgit v1.2.3 From e726f3c368e7c1919a7166ec09c5705759f1a69d Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Mon, 6 Dec 2010 16:20:25 +0100 Subject: amd64_edac: Fix interleaving check When matching error address to the range contained by one memory node, we're in valid range when node interleaving 1. is disabled, or 2. enabled and when the address bits we interleave on match the interleave selector on this node (see the "Node Interleaving" section in the BKDG for an enlightening example). Thus, when we early-exit, we need to reverse the compound logic statement properly. Cc: Signed-off-by: Borislav Petkov --- drivers/edac/amd64_edac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 8521401bbd75..eca9ba193e94 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -1572,7 +1572,7 @@ static int f10_match_to_this_node(struct amd64_pvt *pvt, int dram_range, debugf1(" HoleOffset=0x%x HoleValid=0x%x IntlvSel=0x%x\n", hole_off, hole_valid, intlv_sel); - if (intlv_en || + if (intlv_en && (intlv_sel != ((sys_addr >> 12) & intlv_en))) return -EINVAL; -- cgit v1.2.3