[PATCH v2] ndctl: add clear error support for ndctl
by Dave Jiang
Adding ndctl support that will allow clearing of bad blocks for a device.
Initial implementation will only support device dax devices. The ndctl
takes a device path and parameters of the starting bad block, and the number
of bad blocks to clear.
Signed-off-by: Dave Jiang <dave.jiang(a)intel.com>
---
v2: Addressed comments from Vishal
- added bounds checking for the badblocks region.
- updated verbiage to use badblocks instead of poison.
- set default len to 1.
- fixed error out for stat
- fixed error out that was copy/paste error
- remove duplicate check_min_kver() in shell script
- fixed logic of checking empty badblocks
Documentation/Makefile.am | 1 +
Documentation/ndctl-clear-error.txt | 37 ++++++
builtin.h | 1 +
ndctl/Makefile.am | 1 +
ndctl/clear-error.c | 233 ++++++++++++++++++++++++++++++++++++
ndctl/lib/libndctl.c | 73 +++++++++++
ndctl/lib/libndctl.sym | 2 +
ndctl/libndctl.h.in | 10 ++
ndctl/ndctl.c | 4 +-
test/Makefile.am | 1 +
test/ndctl-clear-error-dax.sh | 68 +++++++++++
11 files changed, 430 insertions(+), 1 deletion(-)
create mode 100755 test/ndctl-clear-error-dax.sh
diff --git a/Documentation/Makefile.am b/Documentation/Makefile.am
index d72085d..7bf1caa 100644
--- a/Documentation/Makefile.am
+++ b/Documentation/Makefile.am
@@ -14,6 +14,7 @@ man1_MANS = \
ndctl-create-namespace.1 \
ndctl-destroy-namespace.1 \
ndctl-check-namespace.1 \
+ ndctl-clear-error.1 \
ndctl-list.1 \
daxctl-list.1
diff --git a/Documentation/ndctl-clear-error.txt b/Documentation/ndctl-clear-error.txt
new file mode 100644
index 0000000..ccff6ca
--- /dev/null
+++ b/Documentation/ndctl-clear-error.txt
@@ -0,0 +1,37 @@
+ndctl-clear-error(1)
+====================
+
+NAME
+----
+ndctl-clear-error - clear badblocks for a device
+
+SYNOPSIS
+--------
+[verse]
+'ndctl clear-error' [<options>]
+
+EXAMPLES
+--------
+
+Clear poison (bad blocks) for the provided device
+[verse]
+ndctl clear-error -f /dev/dax0.0 -s 0 -l 8
+
+Clear poison (bad blocks) at block offset 0 for 8 blocks on device /dev/dax0.0
+
+OPTIONS
+-------
+-f::
+--file::
+ The device/file to be cleared of poison (bad blocks).
+
+-s::
+--start::
+ The offset where the poison (bad block) starts for this device.
+ Typically this is acquired from the sysfs badblocks file.
+
+-l::
+--len::
+ The number of badblocks to clear in size of 512 bytes increments.
+
+
diff --git a/builtin.h b/builtin.h
index a8bc848..f522d00 100644
--- a/builtin.h
+++ b/builtin.h
@@ -30,4 +30,5 @@ int cmd_test(int argc, const char **argv, void *ctx);
#ifdef ENABLE_DESTRUCTIVE
int cmd_bat(int argc, const char **argv, void *ctx);
#endif
+int cmd_clear_error(int argc, const char **argv, void *ctx);
#endif /* _NDCTL_BUILTIN_H_ */
diff --git a/ndctl/Makefile.am b/ndctl/Makefile.am
index d346c04..8123169 100644
--- a/ndctl/Makefile.am
+++ b/ndctl/Makefile.am
@@ -11,6 +11,7 @@ ndctl_SOURCES = ndctl.c \
../util/log.c \
list.c \
test.c \
+ clear-error.c \
../util/json.c
if ENABLE_SMART
diff --git a/ndctl/clear-error.c b/ndctl/clear-error.c
new file mode 100644
index 0000000..33d930a
--- /dev/null
+++ b/ndctl/clear-error.c
@@ -0,0 +1,233 @@
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <libgen.h>
+#include <string.h>
+#include <limits.h>
+#include <ccan/short_types/short_types.h>
+#include <ccan/array_size/array_size.h>
+#include <util/filter.h>
+#include <util/parse-options.h>
+#include <util/log.h>
+#include <ndctl/libndctl.h>
+#include <ndctl.h>
+
+struct clear_err {
+ const char *dev_name;
+ u64 bb_start;
+ unsigned int bb_len;
+ struct ndctl_cmd *ars_cap;
+ struct ndctl_cmd *clear_err;
+ struct ndctl_bus *bus;
+ struct ndctl_region *region;
+ struct ndctl_dax *dax;
+ struct ndctl_ctx *ctx;
+} clear_err;
+
+static int send_clear_error(struct ndctl_bus *bus, u64 start, u64 size)
+{
+ u64 cleared;
+ int rc;
+
+ clear_err.clear_err = ndctl_bus_cmd_new_clear_error(
+ start, size, clear_err.ars_cap);
+ if (!clear_err.clear_err) {
+ fprintf(stderr, "%s: bus: %s failed to create cmd\n",
+ __func__, ndctl_bus_get_provider(bus));
+ return -ENXIO;
+ }
+
+ rc = ndctl_cmd_submit(clear_err.clear_err);
+ if (rc) {
+ fprintf(stderr, "%s: bus: %s failed to submit cmd: %d\n",
+ __func__, ndctl_bus_get_provider(bus), rc);
+ ndctl_cmd_unref(clear_err.clear_err);
+ return rc;
+ }
+
+ cleared = ndctl_cmd_clear_error_get_cleared(clear_err.clear_err);
+ if (cleared != size) {
+ fprintf(stderr, "%s: bus: %s expected to clear: %ld actual: %ld\
+n",
+ __func__, ndctl_bus_get_provider(bus),
+ size, cleared);
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int get_ars_cap(struct ndctl_bus *bus, u64 start, u64 size)
+{
+ int rc;
+
+ clear_err.ars_cap = ndctl_bus_cmd_new_ars_cap(bus, start, size);
+ if (!clear_err.ars_cap) {
+ fprintf(stderr, "%s: bus: %s failed to create cmd\n",
+ __func__, ndctl_bus_get_provider(bus));
+ return -ENOTTY;
+ }
+
+ rc = ndctl_cmd_submit(clear_err.ars_cap);
+ if (rc) {
+ fprintf(stderr, "%s: bus: %s failed to submit cmd: %d\n",
+ __func__, ndctl_bus_get_provider(bus), rc);
+ ndctl_cmd_unref(clear_err.ars_cap);
+ return rc;
+ }
+
+ if (ndctl_cmd_ars_cap_get_size(clear_err.ars_cap) <
+ sizeof(struct nd_cmd_ars_status)){
+ fprintf(stderr, "%s: bus: %s expected size >= %zd got: %d\n",
+ __func__, ndctl_bus_get_provider(bus),
+ sizeof(struct nd_cmd_ars_status),
+ ndctl_cmd_ars_cap_get_size(clear_err.ars_cap));
+ ndctl_cmd_unref(clear_err.ars_cap);
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int match_dev(struct clear_err *ce, char *dev_name)
+{
+ ndctl_bus_foreach(ce->ctx, ce->bus) {
+ ndctl_region_foreach(ce->bus, ce->region) {
+ ndctl_dax_foreach(ce->region, ce->dax) {
+ if (strncmp(basename(dev_name),
+ ndctl_dax_get_devname(ce->dax), 256)
+ == 0) {
+ return 0;
+ }
+ }
+ }
+ }
+
+ return -ENODEV;
+}
+
+static int check_user_input_range(struct ndctl_region *region,
+ unsigned long long start, unsigned int len)
+{
+ struct badblock *bb;
+ int fit = 0;
+
+ ndctl_region_badblock_foreach(region, bb) {
+ if (start >= bb->offset &&
+ start + len <= bb->offset + bb->len) {
+ fit = 1;
+ break;
+ }
+ }
+
+ return fit;
+}
+
+static int clear_error(struct clear_err *ce)
+{
+ struct stat stats;
+ int rc;
+ char dev_name[256];
+ uint64_t base;
+ unsigned long long start;
+ unsigned int len;
+
+ strncpy(dev_name, ce->dev_name, 256);
+
+ rc = stat(dev_name, &stats);
+ if (rc < 0) {
+ perror("stat failed");
+ fprintf(stderr, "Unable to stat %s\n", dev_name);
+ return -1;
+ }
+
+ if (!S_ISCHR(stats.st_mode)) {
+ fprintf(stderr, "%s not DAX device\n", dev_name);
+ return -1;
+ }
+
+ rc = ndctl_new(&ce->ctx);
+ if (rc)
+ return rc;
+
+ if ((rc = match_dev(ce, dev_name)) < 0)
+ goto cleanup;
+
+ base = ndctl_region_get_resource(ce->region);
+ if (base == ULLONG_MAX) {
+ rc = -ERANGE;
+ goto cleanup;
+ }
+
+ if (check_user_input_range(ce->region, clear_err.bb_start,
+ clear_err.bb_len) == 0) {
+ rc = -EINVAL;
+ goto cleanup;
+ }
+
+ start = base + clear_err.bb_start * 512;
+ len = clear_err.bb_len * 512;
+
+ rc = get_ars_cap(ce->bus, start, len);
+ if (rc) {
+ fprintf(stderr, "get_ars_cap failed\n");
+ goto cleanup;
+ }
+
+ rc = send_clear_error(ce->bus, start, len);
+ if (rc) {
+ fprintf(stderr, "send_clear_error failed\n");
+ goto cleanup;
+ }
+
+ rc = 0;
+
+cleanup:
+ ndctl_unref(ce->ctx);
+ return rc;
+}
+
+int cmd_clear_error(int argc, const char **argv, void *ctx)
+{
+ int i, rc;
+ const char * const u[] = {
+ "ndctl clear-error [<options>]",
+ NULL
+ };
+ const struct option options[] = {
+ OPT_STRING('f', "file", &clear_err.dev_name, "device-name",
+ "device/file name to be operated on"),
+ OPT_U64('s', "start", &clear_err.bb_start,
+ "badblock start"),
+ OPT_UINTEGER('l', "len", &clear_err.bb_len, "badblock length"),
+ OPT_END(),
+ };
+
+ argc = parse_options(argc, argv, options, u, 0);
+
+ for (i = 0; i < argc; i++)
+ error("unknown parameter \"%s\"\n", argv[i]);
+
+ if (argc)
+ usage_with_options(u, options);
+
+ if (!clear_err.dev_name) {
+ error("missing device/file name passed in\n");
+ usage_with_options(u, options);
+ return -EINVAL;
+ }
+
+ if (clear_err.bb_len == 0)
+ clear_err.bb_len = 1;
+
+ rc = clear_error(&clear_err);
+ if (rc)
+ return rc;
+
+ return 0;
+}
diff --git a/ndctl/lib/libndctl.c b/ndctl/lib/libndctl.c
index ac1fc63..7399729 100644
--- a/ndctl/lib/libndctl.c
+++ b/ndctl/lib/libndctl.c
@@ -229,6 +229,8 @@ struct ndctl_region {
int state;
unsigned long long cookie;
} iset;
+ FILE *badblocks;
+ struct badblock bb;
};
/**
@@ -1867,6 +1869,77 @@ NDCTL_EXPORT struct ndctl_dimm *ndctl_region_get_next_dimm(struct ndctl_region *
return NULL;
}
+static int regions_badblocks_init(struct ndctl_region *region)
+{
+ struct ndctl_ctx *ctx = ndctl_region_get_ctx(region);
+ struct ndctl_bus *bus = ndctl_region_get_bus(region);
+ char *bb_path;
+ int rc = 0;
+
+ /* if the file is already opened */
+ if (region->badblocks) {
+ fclose(region->badblocks);
+ region->badblocks = NULL;
+ }
+
+ if (asprintf(&bb_path, "/sys/devices/platform/%s/%s/%s/badblocks",
+ ndctl_bus_get_provider(bus),
+ ndctl_bus_get_devname(bus),
+ ndctl_region_get_devname(region)) < 0) {
+ rc = -errno;
+ err(ctx, "region badblocks path allocation failure\n");
+ return rc;
+ }
+
+ region->badblocks = fopen(bb_path, "r");
+ if (!region->badblocks) {
+ rc = -errno;
+ err(ctx, "region badblocks fopen failed\n");
+ return -rc;
+ }
+
+ free(bb_path);
+ return rc;
+}
+
+NDCTL_EXPORT struct badblock *ndctl_region_get_next_badblock(struct ndctl_region *region)
+{
+ int rc;
+ char *buf = NULL;
+ size_t rlen = 0;
+
+ if (!region->badblocks)
+ return NULL;
+
+ rc = getline(&buf, &rlen, region->badblocks);
+ if (rc == -1)
+ return NULL;
+
+ rc = sscanf(buf, "%llu %u", ®ion->bb.offset, ®ion->bb.len);
+ free(buf);
+ if (rc == EOF) {
+ /* end of the road, clean up */
+ fclose(region->badblocks);
+ region->badblocks = NULL;
+ region->bb.offset = 0;
+ region->bb.len = 0;
+ return NULL;
+ }
+
+ return ®ion->bb;
+}
+
+NDCTL_EXPORT struct badblock *ndctl_region_get_first_badblock(struct ndctl_region *region)
+{
+ int rc;
+
+ rc = regions_badblocks_init(region);
+ if (rc < 0)
+ return NULL;
+
+ return ndctl_region_get_next_badblock(region);
+}
+
static struct nd_cmd_vendor_tail *to_vendor_tail(struct ndctl_cmd *cmd)
{
struct nd_cmd_vendor_tail *tail = (struct nd_cmd_vendor_tail *)
diff --git a/ndctl/lib/libndctl.sym b/ndctl/lib/libndctl.sym
index b5a085c..a1b5baf 100644
--- a/ndctl/lib/libndctl.sym
+++ b/ndctl/lib/libndctl.sym
@@ -116,6 +116,8 @@ global:
ndctl_dimm_get_available_labels;
ndctl_region_get_first;
ndctl_region_get_next;
+ ndctl_region_get_first_badblock;
+ ndctl_region_get_next_badblock;
ndctl_region_get_id;
ndctl_region_get_devname;
ndctl_region_get_interleave_ways;
diff --git a/ndctl/libndctl.h.in b/ndctl/libndctl.h.in
index 6ee8a35..2c45d2d 100644
--- a/ndctl/libndctl.h.in
+++ b/ndctl/libndctl.h.in
@@ -372,6 +372,10 @@ int ndctl_cmd_get_status(struct ndctl_cmd *cmd);
unsigned int ndctl_cmd_get_firmware_status(struct ndctl_cmd *cmd);
int ndctl_cmd_submit(struct ndctl_cmd *cmd);
+struct badblock {
+ unsigned long long offset;
+ unsigned int len;
+};
struct ndctl_region;
struct ndctl_region *ndctl_region_get_first(struct ndctl_bus *bus);
struct ndctl_region *ndctl_region_get_next(struct ndctl_region *region);
@@ -379,6 +383,12 @@ struct ndctl_region *ndctl_region_get_next(struct ndctl_region *region);
for (region = ndctl_region_get_first(bus); \
region != NULL; \
region = ndctl_region_get_next(region))
+struct badblock *ndctl_region_get_first_badblock(struct ndctl_region *region);
+struct badblock *ndctl_region_get_next_badblock(struct ndctl_region *region);
+#define ndctl_region_badblock_foreach(region, badblock) \
+ for (badblock = ndctl_region_get_first_badblock(region); \
+ badblock != NULL; \
+ badblock = ndctl_region_get_next_badblock(region))
unsigned int ndctl_region_get_id(struct ndctl_region *region);
const char *ndctl_region_get_devname(struct ndctl_region *region);
unsigned int ndctl_region_get_interleave_ways(struct ndctl_region *region);
diff --git a/ndctl/ndctl.c b/ndctl/ndctl.c
index 4b08c9b..8aff623 100644
--- a/ndctl/ndctl.c
+++ b/ndctl/ndctl.c
@@ -29,7 +29,8 @@ static int cmd_help(int argc, const char **argv, void *ctx)
{
const char * const builtin_help_subcommands[] = {
"enable-region", "disable-region", "zero-labels",
- "enable-namespace", "disable-namespace", NULL };
+ "enable-namespace", "disable-namespace",
+ "clear-error", NULL };
struct option builtin_help_options[] = {
OPT_END(),
};
@@ -67,6 +68,7 @@ static struct cmd_struct commands[] = {
{ "write-labels", cmd_write_labels },
{ "init-labels", cmd_init_labels },
{ "check-labels", cmd_check_labels },
+ { "clear-error", cmd_clear_error },
{ "list", cmd_list },
{ "help", cmd_help },
#ifdef ENABLE_TEST
diff --git a/test/Makefile.am b/test/Makefile.am
index 9353a34..3cd159e 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -10,6 +10,7 @@ TESTS =\
clear.sh \
dax-errors.sh \
daxdev-errors.sh \
+ ndctl-clear-error-dax.sh \
btt-check.sh \
label-compat.sh \
blk-exhaust.sh
diff --git a/test/ndctl-clear-error-dax.sh b/test/ndctl-clear-error-dax.sh
new file mode 100755
index 0000000..646b601
--- /dev/null
+++ b/test/ndctl-clear-error-dax.sh
@@ -0,0 +1,68 @@
+#!/bin/bash -x
+DEV=""
+NDCTL="../ndctl/ndctl"
+BUS="-b nfit_test.0"
+BUS1="-b nfit_test.1"
+json2var="s/[{}\",]//g; s/:/=/g"
+rc=77
+
+check_min_kver()
+{
+ local ver="$1"
+ : "${KVER:=$(uname -r)}"
+
+ [ -n "$ver" ] || return 1
+ [[ "$ver" == "$(echo -e "$ver\n$KVER" | sort -V | head -1)" ]]
+}
+
+check_min_kver "4.12" || { echo "kernel $KVER lacks dax dev error handling"; exit $rc; }
+
+set -e
+
+err() {
+ echo "test/clear: failed at line $1"
+ exit $rc
+}
+
+set -e
+trap 'err $LINENO' ERR
+
+# setup (reset nfit_test dimms)
+modprobe nfit_test
+$NDCTL disable-region $BUS all
+$NDCTL zero-labels $BUS all
+$NDCTL enable-region $BUS all
+
+rc=1
+
+query=". | sort_by(.available_size) | reverse | .[0].dev"
+region=$($NDCTL list $BUS -t pmem -Ri | jq -r "$query")
+
+# create dax
+chardev="x"
+json=$($NDCTL create-namespace $BUS -r $region -t pmem -m dax -a 4096)
+chardev=$(echo $json | jq -r ". | select(.mode == \"dax\") | .daxregion.devices[0].chardev")
+[ $chardev = "x" ] && echo "fail: $LINENO" && exit 1
+
+json1=$($NDCTL list $BUS)
+eval $(echo $json1 | sed -e "$json2var")
+
+read sector len < /sys/bus/platform/devices/nfit_test.0/$dev/$region/badblocks
+echo "sector: $sector len: $len"
+
+# clearing using ndctl
+$NDCTL clear-error -f /dev/$chardev -s $sector -l $len
+
+# check badblocks, should be empty
+if read sector len < /sys/bus/platform/devices/nfit_test.0/$dev/$region/badblocks; then
+ [ -n "$sector" ] && echo "fail: $LINENO" && exit 1
+else
+ echo "badblocks empty, expected"
+fi
+
+
+$NDCTL disable-region $BUS all
+$NDCTL disable-region $BUS1 all
+modprobe -r nfit_test
+
+exit 0
5 years
[PATCH 1/2] libnvdimm: fix clear length of nvdimm_forget_poison()
by Toshi Kani
ND_CMD_CLEAR_ERROR command returns 'clear_err.cleared', the length
of error actually cleared, which may be smaller than its requested
'len'.
Change nvdimm_clear_poison() to call nvdimm_forget_poison() with
'clear_err.cleared' when this value is valid.
Signed-off-by: Toshi Kani <toshi.kani(a)hpe.com>
Cc: Dan Williams <dan.j.williams(a)intel.com>
Cc: Dave Jiang <dave.jiang(a)intel.com>
Cc: Vishal Verma <vishal.l.verma(a)intel.com>
---
Based on 'libnvdimm-for-next'.
---
drivers/nvdimm/bus.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index d214ac44..43ddfd4 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -219,7 +219,9 @@ long nvdimm_clear_poison(struct device *dev, phys_addr_t phys,
if (cmd_rc < 0)
return cmd_rc;
- nvdimm_forget_poison(nvdimm_bus, phys, len);
+ if (clear_err.cleared > 0)
+ nvdimm_forget_poison(nvdimm_bus, phys, clear_err.cleared);
+
return clear_err.cleared;
}
EXPORT_SYMBOL_GPL(nvdimm_clear_poison);
5 years
KASLR causes intermittent boot failures on some systems
by Jeff Moyer
Hi,
commit 021182e52fe01 ("x86/mm: Enable KASLR for physical mapping memory
regions") causes some of my systems with persistent memory (whether real
or emulated) to fail to boot with a couple of different crash
signatures. The first signature is a NMI watchdog lockup of all but 1
cpu, which causes much difficulty in extracting useful information from
the console. The second variant is an invalid paging request, listed
below.
On some systems, I haven't hit this problem at all. Other systems
experience a failed boot maybe 20-30% of the time. To reproduce it,
configure some emulated pmem on your system. You can find directions
for that here: https://nvdimm.wiki.kernel.org/
Install ndctl (https://github.com/pmem/ndctl).
Configure the namespace:
# ndctl create-namespace -f -e namespace0.0 -m memory
Then just reboot several times (5 should be enough), and hopefully
you'll hit the issue.
I've attached both my .config and the dmesg output from a successful
boot at the end of this mail.
Cheers,
Jeff
[ 9.874109] pmem0: detected capacity change from 0 to 206158430208
[ 9.881652] BUG: unable to handle kernel paging request at ffff9406bfff0000
[ 9.889431] IP: memcpy_erms+0x6/0x10
[ 9.893422] PGD 0
[ 9.893423]
[ 9.897316] Oops: 0000 [#1] SMP
[ 9.900820] Modules linked in: isci mgag200 drm_kms_helper syscopyarea sysfillrect sysimgblt igb fb_sys_fops ahci libsas ttm ptp libahci crc32c_intel scsi_transport_sas nd_pmem pps_core nd_btt drm dca libata i2c_algo_bit i2c_core dm_mirror dm_region_hash dm_log dm_mod
[ 9.927322] CPU: 11 PID: 441 Comm: systemd-udevd Not tainted 4.11.0-rc5+ #1
[ 9.935092] Hardware name: Intel Corporation LH Pass/SVRBD-ROW_P, BIOS SE5C600.86B.02.01.SP06.050920141054 05/09/2014
[ 9.946934] task: ffff92dedae12b80 task.stack: ffffbaeb0783c000
[ 9.953539] RIP: 0010:memcpy_erms+0x6/0x10
[ 9.958108] RSP: 0018:ffffbaeb0783f9b8 EFLAGS: 00010286
[ 9.963939] RAX: ffff92e6dafef000 RBX: 0000000000000000 RCX: 0000000000001000
[ 9.971904] RDX: 0000000000001000 RSI: ffff9406bfff0000 RDI: ffff92e6dafef000
[ 9.979869] RBP: ffffbaeb0783fa38 R08: 0000000000000000 R09: 0000000017ffff80
[ 9.987831] R10: 0000000000000000 R11: ffff9406bfff0000 R12: ffff92d83bfaea98
[ 9.995794] R13: 0000002fffff0000 R14: 0000000000001000 R15: ffff92e6dafef000
[ 10.003759] FS: 00007fd4c2e618c0(0000) GS:ffff92e6de4c0000(0000) knlGS:0000000000000000
[ 10.012779] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 10.019192] CR2: ffff9406bfff0000 CR3: 000000081a05c000 CR4: 00000000001406e0
[ 10.027158] Call Trace:
[ 10.029891] ? pmem_do_bvec+0x93/0x290 [nd_pmem]
[ 10.035046] ? radix_tree_node_alloc.constprop.20+0x85/0xc0
[ 10.041263] ? radix_tree_node_alloc.constprop.20+0x85/0xc0
[ 10.047481] pmem_rw_page+0x3a/0x60 [nd_pmem]
[ 10.052343] bdev_read_page+0x81/0xb0
[ 10.056431] do_mpage_readpage+0x56f/0x770
[ 10.060991] ? I_BDEV+0x20/0x20
[ 10.064500] ? lru_cache_add+0xe/0x10
[ 10.068584] mpage_readpages+0x148/0x1e0
[ 10.072958] ? I_BDEV+0x20/0x20
[ 10.076462] ? I_BDEV+0x20/0x20
[ 10.079969] ? alloc_pages_current+0x88/0x120
[ 10.084830] blkdev_readpages+0x1d/0x20
[ 10.089111] __do_page_cache_readahead+0x1ce/0x2c0
[ 10.094456] force_page_cache_readahead+0xa2/0x100
[ 10.099800] page_cache_sync_readahead+0x3f/0x50
[ 10.104956] generic_file_read_iter+0x60d/0x8c0
[ 10.110014] ? cp_new_stat+0x14f/0x180
[ 10.114187] blkdev_read_iter+0x37/0x40
[ 10.118469] __vfs_read+0xe0/0x150
[ 10.122253] vfs_read+0x8c/0x130
[ 10.125856] SyS_read+0x55/0xc0
[ 10.129354] entry_SYSCALL_64_fastpath+0x1a/0xa9
[ 10.134508] RIP: 0033:0x7fd4c1d9d480
[ 10.138487] RSP: 002b:00007fffa1f96e08 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[ 10.146934] RAX: ffffffffffffffda RBX: 00007fffa1f968f0 RCX: 00007fd4c1d9d480
[ 10.154896] RDX: 0000000000000040 RSI: 0000559de3d6d978 RDI: 0000000000000008
[ 10.162859] RBP: 0000000000010300 R08: 0000000000000020 R09: 0000000000000068
[ 10.170820] R10: 00007fffa1f96b90 R11: 0000000000000246 R12: 0000000000000000
[ 10.178783] R13: 00007fffa1f97980 R14: 0000000000000000 R15: 0000000000000000
[ 10.186748] Code: ff 90 90 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 <f3> a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38
[ 10.207813] RIP: memcpy_erms+0x6/0x10 RSP: ffffbaeb0783f9b8
[ 10.214022] CR2: ffff9406bfff0000
[ 10.217774] ---[ end trace 2ea6d4ce29040562 ]---
[ 10.265522] Kernel panic - not syncing: Fatal exception
[ 10.271381] Kernel Offset: 0x2a000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 10.309968] ---[ end Kernel panic - not syncing: Fatal exception
[ 10.316682] ------------[ cut here ]------------
5 years
Re:
by USPS Station Management
Hello,
Your item has arrived at the USPS Post Office at Sat, 29 Apr 2017 15:53:09
-0700, but the courier was unable to deliver parcel to you.
You can find more details in this e-mail attachment!
With thanks and appreciation.
Fermina Khan - USPS Support Agent.
5 years
Status of your USPS delivery ID: 726627646
by USPS Priority
Hello,
We can not deliver your parcel arrived at Sat, 29 Apr 2017 18:21:01 +0200.
You can download the shipment label attached!
Your help is greatly appreciated.
Olivie Kuligowski - USPS Chief Delivery Manager.
5 years
[PATCH 0/3] dynamic_hex_dump cleanup
by Dan Williams
More than one driver has worked around the fact that
print_hex_dump_debug() requires CONFIG_DYNAMIC_DEBUG=y to build. Provide
a dynamic_hex_dump() so that drivers that want the extra debugging to be
turned off in the CONFIG_DYNAMIC_DEBUG=n can use dynamic_hex_dump()
directly.
I'm fine to carry this whole set through nvdimm.git if no one sees any
issues.
---
Dan Williams (3):
printk: provide generic dynamic_hex_dump fallback
virtio, rpmsg: switch to dynamic_hex_dump()
acpi, nfit: kill ACPI_NFIT_DEBUG, switch to dynamic_hex_dump()
drivers/acpi/nfit/Kconfig | 12 ------------
drivers/acpi/nfit/core.c | 21 ++++++++-------------
drivers/rpmsg/virtio_rpmsg_bus.c | 6 ------
include/linux/dynamic_debug.h | 6 ++++++
4 files changed, 14 insertions(+), 31 deletions(-)
5 years
[PATCH v2 00/21] Introduce common scatterlist map function
by Logan Gunthorpe
Changes since v1:
* Rebased onto next-20170424
* Removed the _offset version of these functions per Christoph's
suggestion
* Added an SG_MAP_MUST_NOT_FAIL flag which will BUG_ON in future cases
that can't gracefully fail. This removes a bunch of the noise added
in v1 to a couple of the drivers. (Per David Laight's suggestion)
This flag is only meant for old code
* Split the libiscsi patch into two (per Christoph's suggestion)
the prep patch (patch 2 in this series) has already been
sent separately
* Fixed a locking mistake in the target patch (pointed out by a bot)
* Dropped the nvmet patch and handled it with a different patch
that has been sent separately
* Dropped the chcr patch as they have already removed the code that
needed to be changed
I'm still hoping to only get Patch 1 in the series merged. (Any
volunteers?) I'm willing to chase down the maintainers for the remaining
patches separately after the first patch is in.
The patchset is based on next-20170424 and can be found in the sg_map_v2
branch from this git tree:
https://github.com/sbates130272/linux-p2pmem.git
--
Hi Everyone,
As part of my effort to enable P2P DMA transactions with PCI cards,
we've identified the need to be able to safely put IO memory into
scatterlists (and eventually other spots). This probably involves a
conversion from struct page to pfn_t but that migration is a ways off
and those decisions are yet to be made.
As an initial step in that direction, I've started cleaning up some of the
scatterlist code by trying to carve out a better defined layer between it
and it's users. The longer term goal would be to remove sg_page or replace
it with something that can potentially fail.
This patchset is the first step in that effort. I've introduced
a common function to map scatterlist memory and converted all the common
kmap(sg_page()) cases. This removes about 66 sg_page calls (of ~331).
Seeing this is a fairly large cleanup set that touches a wide swath of
the kernel I have limited the people I've sent this to. I'd suggest we look
toward merging the first patch and then I can send the individual subsystem
patches on to their respective maintainers and get them merged
independantly. (This is to avoid the conflicts I created with my last
cleanup set... Sorry) Though, I'm certainly open to other suggestions to get
it merged.
Logan Gunthorpe (21):
scatterlist: Introduce sg_map helper functions
libiscsi: Add an internal error code
libiscsi: Make use of new the sg_map helper function
target: Make use of the new sg_map function at 16 call sites
drm/i915: Make use of the new sg_map helper function
crypto: hifn_795x: Make use of the new sg_map helper function
crypto: shash, caam: Make use of the new sg_map helper function
dm-crypt: Make use of the new sg_map helper in 4 call sites
staging: unisys: visorbus: Make use of the new sg_map helper function
RDS: Make use of the new sg_map helper function
scsi: ipr, pmcraid, isci: Make use of the new sg_map helper
scsi: hisi_sas, mvsas, gdth: Make use of the new sg_map helper
function
scsi: arcmsr, ips, megaraid: Make use of the new sg_map helper
function
scsi: libfc, csiostor: Change to sg_copy_buffer in two drivers
xen-blkfront: Make use of the new sg_map helper function
mmc: sdhci: Make use of the new sg_map helper function
mmc: spi: Make use of the new sg_map helper function
mmc: tmio: Make use of the new sg_map helper function
mmc: sdricoh_cs: Make use of the new sg_map helper function
mmc: tifm_sd: Make use of the new sg_map helper function
memstick: Make use of the new sg_map helper function
crypto/shash.c | 9 ++-
drivers/block/xen-blkfront.c | 20 ++---
drivers/crypto/caam/caamalg.c | 8 +-
drivers/crypto/hifn_795x.c | 32 +++++---
drivers/gpu/drm/i915/i915_gem.c | 27 ++++---
drivers/md/dm-crypt.c | 39 ++++++---
drivers/memstick/host/jmb38x_ms.c | 11 +--
drivers/memstick/host/tifm_ms.c | 11 +--
drivers/mmc/host/mmc_spi.c | 26 ++++--
drivers/mmc/host/sdhci.c | 14 ++--
drivers/mmc/host/sdricoh_cs.c | 14 ++--
drivers/mmc/host/tifm_sd.c | 50 +++++++-----
drivers/mmc/host/tmio_mmc.h | 7 +-
drivers/mmc/host/tmio_mmc_pio.c | 12 +++
drivers/scsi/arcmsr/arcmsr_hba.c | 16 +++-
drivers/scsi/csiostor/csio_scsi.c | 54 +------------
drivers/scsi/cxgbi/libcxgbi.c | 5 ++
drivers/scsi/gdth.c | 9 ++-
drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 14 ++--
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 13 ++-
drivers/scsi/ipr.c | 27 ++++---
drivers/scsi/ips.c | 8 +-
drivers/scsi/isci/request.c | 42 ++++++----
drivers/scsi/libfc/fc_libfc.c | 49 +++--------
drivers/scsi/libiscsi_tcp.c | 32 +++++---
drivers/scsi/megaraid.c | 9 ++-
drivers/scsi/mvsas/mv_sas.c | 10 +--
drivers/scsi/pmcraid.c | 19 +++--
drivers/staging/unisys/visorhba/visorhba_main.c | 12 +--
drivers/target/iscsi/iscsi_target.c | 29 ++++---
drivers/target/target_core_rd.c | 3 +-
drivers/target/target_core_sbc.c | 103 +++++++++++++++---------
drivers/target/target_core_transport.c | 18 +++--
drivers/target/target_core_user.c | 45 ++++++++---
include/linux/scatterlist.h | 85 +++++++++++++++++++
include/scsi/libiscsi_tcp.h | 3 +-
include/target/target_core_backend.h | 4 +-
net/rds/ib_recv.c | 8 +-
38 files changed, 553 insertions(+), 344 deletions(-)
--
2.1.4
5 years
Re:
by USPS Ground Support
Hello,
Your item has arrived at the USPS Post Office at Fri, 28 Apr 2017 11:27:27
-0700, but the courier was unable to deliver parcel to you.
You can download the shipment label attached!
With gratitude.
Lashan Simmering - USPS Support Manager.
5 years
