Re: [LKP] [rcu] kernel BUG at include/linux/pagemap.h:149!
by Frederic Weisbecker
On Fri, Sep 11, 2015 at 10:19:47AM +0800, Boqun Feng wrote:
> Subject: [PATCH 01/27] rcu: Don't disable preemption for Tiny and Tree RCU
> readers
>
> Because preempt_disable() maps to barrier() for non-debug builds,
> it forces the compiler to spill and reload registers. Because Tree
> RCU and Tiny RCU now only appear in CONFIG_PREEMPT=n builds, these
> barrier() instances generate needless extra code for each instance of
> rcu_read_lock() and rcu_read_unlock(). This extra code slows down Tree
> RCU and bloats Tiny RCU.
>
> This commit therefore removes the preempt_disable() and preempt_enable()
> from the non-preemptible implementations of __rcu_read_lock() and
> __rcu_read_unlock(), respectively.
>
> For debug purposes, preempt_disable() and preempt_enable() are still
> kept if CONFIG_PREEMPT_COUNT=y, which makes the detection of sleeping
> inside atomic sections still work in non-preemptible kernels.
>
> Signed-off-by: Boqun Feng <boqun.feng(a)gmail.com>
> Signed-off-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com>
> ---
> include/linux/rcupdate.h | 6 ++++--
> include/linux/rcutiny.h | 1 +
> kernel/rcu/tree.c | 9 +++++++++
> 3 files changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
> index d63bb77..6c3cece 100644
> --- a/include/linux/rcupdate.h
> +++ b/include/linux/rcupdate.h
> @@ -297,12 +297,14 @@ void synchronize_rcu(void);
>
> static inline void __rcu_read_lock(void)
> {
> - preempt_disable();
> + if (IS_ENABLED(CONFIG_PREEMPT_COUNT))
> + preempt_disable();
preempt_disable() is a no-op when !CONFIG_PREEMPT_COUNT, right?
Or rather it's a barrier(), which is anyway implied by rcu_read_lock().
So perhaps we can get rid of the IS_ENABLED() check?
1 year, 10 months
[btrfs] "fio: pid=2214, got signal=7" error showed in fio test for btrfs
by kernel test robot
Hi,
We detected below error messages in fio pmem test for btrfs.
machine: Intel(R) Xeon(R) CPU E5-2695 v3 @ 2.30GHz with 256G memory
kernel: v4.10
test parameters:
[global]
bs=2M
ioengine=mmap
iodepth=32
size=7669584457
direct=0
runtime=200
invalidate=1
fallocate=posix
group_reporting
time_based
[task_0]
rw=write
directory=/fs/pmem0
numjobs=14
[task_1]
rw=write
directory=/fs/pmem1
numjobs=14
==> /tmp/stderr <==
fio: pid=2214, got signal=7
fio: pid=2215, got signal=7
fio: pid=2217, got signal=7
fio: pid=2220, got signal=7
fio: pid=2222, got signal=7
fio: pid=2224, got signal=7
fio: pid=2225, got signal=7
fio: pid=2227, got signal=7
fio: pid=2216, got signal=7
fio: pid=2218, got signal=7
fio: pid=2219, got signal=7
fio: pid=2221, got signal=7
fio: pid=2223, got signal=7
fio: pid=2226, got signal=7
fio: pid=2200, got signal=7
fio: pid=2201, got signal=7
fio: pid=2203, got signal=7
fio: pid=2204, got signal=7
fio: pid=2205, got signal=7
fio: pid=2208, got signal=7
fio: pid=2209, got signal=7
fio: pid=2210, got signal=7
fio: pid=2211, got signal=7
fio: pid=2212, got signal=7
fio: pid=2213, got signal=7
fio: pid=2202, got signal=7
fio: pid=2206, got signal=7
fio: pid=2207, got signal=7
fio: file hash not empty on exit
while fio test is ok for ext4 with the same test parameters.
Attached reproduce.sh may help reproduce the problem.
Thanks,
Xiaolong
3 years, 11 months
[printk] fbc14616f4: BUG:kernel_reboot-without-warning_in_test_stage
by kernel test robot
FYI, we noticed the following commit:
commit: fbc14616f483788afabe77d05bfb99883dc66c73 ("printk: enable printk offloading")
url: https://github.com/0day-ci/linux/commits/Sergey-Senozhatsky/printk-introd...
in testcase: trinity
with following parameters:
runtime: 300s
test-description: Trinity is a linux system call fuzz tester.
test-url: http://codemonkey.org.uk/projects/trinity/
on test machine: qemu-system-x86_64 -enable-kvm -cpu Westmere -m 512M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-------------------------------------------------+------------+------------+
| | fd8b6b120c | fbc14616f4 |
+-------------------------------------------------+------------+------------+
| boot_successes | 8 | 8 |
| boot_failures | 0 | 6 |
| BUG:kernel_reboot-without-warning_in_test_stage | 0 | 4 |
| BUG:kernel_hang_in_test_stage | 0 | 2 |
+-------------------------------------------------+------------+------------+
[ 21.009531] VFS: Warning: trinity-c2 using old stat() call. Recompile your binary.
[ 21.148898] VFS: Warning: trinity-c0 using old stat() call. Recompile your binary.
[ 22.298208] warning: process `trinity-c2' used the deprecated sysctl system call with
Elapsed time: 310
BUG: kernel reboot-without-warning in test stage
initrds=(
/osimage/yocto/yocto-tiny-i386-2016-04-22.cgz
/lkp/scheduled/vm-kbuild-yocto-ia32-9/trinity-300s-yocto-tiny-i386-2016-04-22.cgz-fbc14616f483788afabe77d05bfb99883dc66c73-20170331-102676-cxuzks-0.cgz
/lkp/lkp/lkp-i386.cgz
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Kernel Test Robot
3 years, 11 months
[lkp-robot] [sched/fair] 4c77b18cf8: hackbench.throughput -14.4% regression
by kernel test robot
Greeting,
FYI, we noticed a -14.4% regression of hackbench.throughput due to commit:
commit: 4c77b18cf8b7ab37c7d5737b4609010d2ceec5f0 ("sched/fair: Make select_idle_cpu() more aggressive")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: hackbench
on test machine: 48 threads 2 sockets Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz with 64G memory
with following parameters:
nr_threads: 50%
mode: process
ipc: pipe
cpufreq_governor: performance
test-description: Hackbench is both a benchmark and a stress test for the Linux kernel scheduler.
test-url: https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/sc...
In addition to that, the commit also has significant impact on the following tests:
+------------------+-----------------------------------------------------------------------+
| testcase: change | netperf: netperf.Throughput_tps -33.8% regression |
| test machine | 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 128G memory |
| test parameters | cluster=cs-localhost |
| | cpufreq_governor=performance |
| | ip=ipv4 |
| | nr_threads=200% |
| | runtime=300s |
| | test=SCTP_RR |
+------------------+-----------------------------------------------------------------------+
| testcase: change | netperf: netperf.Throughput_tps -50.8% regression |
| test machine | 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 128G memory |
| test parameters | cluster=cs-localhost |
| | cpufreq_governor=performance |
| | ip=ipv4 |
| | nr_threads=200% |
| | runtime=300s |
| | test=TCP_RR |
+------------------+-----------------------------------------------------------------------+
| testcase: change | netperf: netperf.Throughput_Mbps -8.7% regression |
| test machine | 16 threads Intel(R) Xeon(R) CPU D-1541 @ 2.10GHz with 8G memory |
| test parameters | cluster=cs-localhost |
| | cpufreq_governor=performance |
| | ip=ipv4 |
| | nr_threads=200% |
| | runtime=300s |
| | send_size=10K |
| | test=SCTP_STREAM_MANY |
+------------------+-----------------------------------------------------------------------+
| testcase: change | hackbench: hackbench.throughput 12.1% improvement |
| test machine | 8 threads Ivy Bridge with 16G memory |
| test parameters | cpufreq_governor=performance |
| | ipc=pipe |
| | mode=process |
| | nr_threads=50% |
+------------------+-----------------------------------------------------------------------+
| testcase: change | netperf: netperf.Throughput_Mbps -2.5% regression |
| test machine | 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 128G memory |
| test parameters | cluster=cs-localhost |
| | cpufreq_governor=performance |
| | ip=ipv4 |
| | nr_threads=200% |
| | runtime=300s |
| | send_size=10K |
| | test=SCTP_STREAM_MANY |
+------------------+-----------------------------------------------------------------------+
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
testcase/path_params/tbox_group/run: hackbench/50%-process-pipe-performance/ivb42
4977ab6e92e267af 4c77b18cf8b7ab37c7d5737b46
---------------- --------------------------
179106 -14% 153395 hackbench.throughput
5.036e+08 21% 6.113e+08 hackbench.time.involuntary_context_switches
4523 3% 4675 hackbench.time.percent_of_cpu_this_job_got
27089 3% 27956 hackbench.time.system_time
1394 -10% 1252 hackbench.time.user_time
2.501e+09 -11% 2.223e+09 hackbench.time.voluntary_context_switches
779669 -14% 667478 hackbench.time.minor_page_faults
319399 3% 329894 interrupts.CAL:Function_call_interrupts
884938 -22% 692644 vmstat.system.in
5224554 -9% 4736985 vmstat.system.cs
2880 2955 turbostat.Avg_MHz
96.25 98.77 turbostat.%Busy
6.59 -14% 5.63 turbostat.RAMWatt
2.009e+08 98% 3.986e+08 perf-stat.cpu-migrations
0.67 8% 0.73 perf-stat.branch-miss-rate%
5.046e+11 13% 5.722e+11 perf-stat.cache-references
5.897e+10 5% 6.22e+10 perf-stat.branch-misses
3851 16% 4471 perf-stat.instructions-per-iTLB-miss
38.80 -11% 34.53 perf-stat.node-store-miss-rate%
8.697e+13 8.833e+13 perf-stat.cpu-cycles
1928944 -8% 1777815 perf-stat.page-faults
1928944 -8% 1777789 perf-stat.minor-faults
1.332e+10 ± 3% -18% 1.098e+10 ± 16% perf-stat.dTLB-store-misses
1.87 ± 4% -20% 1.50 ± 19% perf-stat.dTLB-load-miss-rate%
2.654e+11 ± 4% -25% 1.988e+11 ± 20% perf-stat.dTLB-load-misses
0.53 -6% 0.50 perf-stat.ipc
8.738e+12 8.565e+12 perf-stat.branch-instructions
3.299e+09 -10% 2.968e+09 perf-stat.context-switches
4.586e+13 -4% 4.398e+13 perf-stat.instructions
64.05 31% 84.13 perf-stat.iTLB-load-miss-rate%
1.392e+13 -6% 1.306e+13 perf-stat.dTLB-loads
8.613e+12 -10% 7.773e+12 perf-stat.dTLB-stores
1.135e+10 ± 4% -45% 6.254e+09 ± 4% perf-stat.node-loads
1.878e+10 ± 3% -46% 1.016e+10 ± 4% perf-stat.cache-misses
1.1e+10 ± 4% -46% 5.949e+09 ± 4% perf-stat.node-load-misses
1.191e+10 -17% 9.836e+09 perf-stat.iTLB-load-misses
7.431e+09 ± 4% -48% 3.875e+09 ± 4% perf-stat.node-stores
3.72 ± 4% -52% 1.78 ± 4% perf-stat.cache-miss-rate%
4.711e+09 ± 4% -57% 2.044e+09 ± 3% perf-stat.node-store-misses
6.682e+09 -72% 1.856e+09 ± 3% perf-stat.iTLB-loads
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Ying Huang
3 years, 11 months
[lkp-robot] [ftrace] 42c269c88d: WARNING:at_kernel/trace/ftrace.c:#ftrace_bug
by kernel test robot
FYI, we noticed the following commit:
commit: 42c269c88dc146982a54a8267f71abc99f12852a ("ftrace: Allow for function tracing to record init functions on boot up")
https://git.kernel.org/cgit/linux/kernel/git/rostedt/linux-trace.git ftrace/core
in testcase: trinity
with following parameters:
runtime: 300s
test-description: Trinity is a linux system call fuzz tester.
test-url: http://codemonkey.org.uk/projects/trinity/
on test machine: qemu-system-x86_64 -enable-kvm -cpu Westmere -m 512M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
[ 33.973546] WARNING: CPU: 0 PID: 246 at kernel/trace/ftrace.c:2019 ftrace_bug+0x266/0x360
[ 33.973546] WARNING: CPU: 0 PID: 246 at kernel/trace/ftrace.c:2019 ftrace_bug+0x266/0x360
[ 33.976774] Modules linked in: cmdlinepart
[ 33.976774] Modules linked in: cmdlinepart
[ 33.982951] CPU: 0 PID: 246 Comm: trinity-main Not tainted 4.11.0-rc3-00005-g42c269c #1
[ 33.982951] CPU: 0 PID: 246 Comm: trinity-main Not tainted 4.11.0-rc3-00005-g42c269c #1
[ 33.985586] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 33.985586] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 33.988910] Call Trace:
[ 33.988910] Call Trace:
[ 33.989766] dump_stack+0x58/0x74
[ 33.989766] dump_stack+0x58/0x74
[ 33.990879] __warn+0xea/0x110
[ 33.990879] __warn+0xea/0x110
[ 33.991920] ? ftrace_bug+0x266/0x360
[ 33.991920] ? ftrace_bug+0x266/0x360
[ 33.993167] ? i386_start_kernel+0x5/0x9a
[ 33.993167] ? i386_start_kernel+0x5/0x9a
[ 33.994522] warn_slowpath_null+0x2a/0x30
[ 33.994522] warn_slowpath_null+0x2a/0x30
[ 33.995844] ftrace_bug+0x266/0x360
[ 33.995844] ftrace_bug+0x266/0x360
[ 33.997052] ftrace_replace_code+0x20e/0x360
[ 33.997052] ftrace_replace_code+0x20e/0x360
[ 33.998537] ftrace_modify_all_code+0x92/0x120
[ 33.998537] ftrace_modify_all_code+0x92/0x120
[ 34.000017] arch_ftrace_update_code+0xf/0x20
[ 34.000017] arch_ftrace_update_code+0xf/0x20
[ 34.001471] ftrace_run_update_code+0x1b/0x60
[ 34.001471] ftrace_run_update_code+0x1b/0x60
[ 34.002893] ftrace_startup_enable+0x30/0x40
[ 34.002893] ftrace_startup_enable+0x30/0x40
[ 34.004338] ftrace_startup+0xd9/0x250
[ 34.004338] ftrace_startup+0xd9/0x250
[ 34.005584] register_ftrace_function+0x40/0x60
[ 34.005584] register_ftrace_function+0x40/0x60
[ 34.007092] perf_ftrace_event_register+0x67/0x130
[ 34.007092] perf_ftrace_event_register+0x67/0x130
[ 34.008727] perf_trace_init+0xcf/0x2e0
[ 34.008727] perf_trace_init+0xcf/0x2e0
[ 34.010023] perf_tp_event_init+0x1d/0x50
[ 34.010023] perf_tp_event_init+0x1d/0x50
[ 34.011365] perf_try_init_event+0x60/0x80
[ 34.011365] perf_try_init_event+0x60/0x80
[ 34.012729] perf_event_alloc+0x6c0/0x800
[ 34.012729] perf_event_alloc+0x6c0/0x800
[ 34.014073] ? perf_event_alloc+0x353/0x800
[ 34.014073] ? perf_event_alloc+0x353/0x800
[ 34.015476] SyS_perf_event_open+0x3fa/0xf00
[ 34.015476] SyS_perf_event_open+0x3fa/0xf00
[ 34.016987] do_fast_syscall_32+0x9a/0x160
[ 34.016987] do_fast_syscall_32+0x9a/0x160
[ 34.018411] entry_SYSENTER_32+0x47/0x71
[ 34.018411] entry_SYSENTER_32+0x47/0x71
[ 34.019722] EIP: 0xb77bccd9
[ 34.019722] EIP: 0xb77bccd9
[ 34.020677] EFLAGS: 00000286 CPU: 0
[ 34.020677] EFLAGS: 00000286 CPU: 0
[ 34.021827] EAX: ffffffda EBX: 09c0a9f0 ECX: 00000000 EDX: ffffffff
[ 34.021827] EAX: ffffffda EBX: 09c0a9f0 ECX: 00000000 EDX: ffffffff
[ 34.023857] ESI: ffffffff EDI: 0000000b EBP: 00000117 ESP: bfd76e4c
[ 34.023857] ESI: ffffffff EDI: 0000000b EBP: 00000117 ESP: bfd76e4c
[ 34.025895] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b
[ 34.025895] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b
[ 34.053634] ---[ end trace aef11820af4e004f ]---
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
4 years
[lkp-robot] [f2fs] 22588f8773: xfstests.generic.026.fail
by kernel test robot
FYI, we noticed the following commit:
commit: 22588f8773f687449ce6e97dce9f102553440d30 ("f2fs: don't reserve additional space in xattr block")
https://git.kernel.org/cgit/linux/kernel/git/jaegeuk/f2fs.git dev-test
in testcase: xfstests
with following parameters:
disk: 4HDD
fs: f2fs
test: generic-quick1
test-description: xfstests is a regression test suite for xfs and other files ystems.
test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git
on test machine: 4 threads Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz with 6G memory
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
2017-03-30 02:02:12 export TEST_DIR=/fs/sda5
2017-03-30 02:02:12 export TEST_DEV=/dev/sda5
2017-03-30 02:02:12 export FSTYP=f2fs
2017-03-30 02:02:12 export SCRATCH_MNT=/fs/scratch
2017-03-30 02:02:12 mkdir /fs/scratch -p
2017-03-30 02:02:12 export SCRATCH_DEV=/dev/sda8
2017-03-30 02:02:12 ./check generic/001 generic/002 generic/003 generic/004 generic/005 generic/006 generic/007 generic/008 generic/009 generic/011 generic/012 generic/014 generic/015 generic/015 generic/016 generic/018 generic/020 generic/021 generic/022 generic/023 generic/024 generic/025 generic/026 generic/028 generic/029 generic/030 generic/031 generic/032 generic/033 generic/034 generic/035 generic/036 generic/037 generic/039 generic/040 generic/041 generic/042 generic/043 generic/044 generic/045 generic/046 generic/047 generic/048 generic/049 generic/050 generic/051 generic/052 generic/052 generic/053 generic/054 generic/054 generic/055 generic/055 generic/056 generic/057 generic/058 generic/059 generic/060 generic/061 generic/062 generic/064 generic/065 generic/066 generic/067 generic/069 generic/071 generic/072 generic/073 generic/077 generic/078 generic/079 generic/080 generic/082 generic/084 generic/085 generic/086 generic/087
FSTYP -- f2fs
PLATFORM -- Linux/x86_64 snb-drag 4.11.0-rc3-00077-g22588f8
MKFS_OPTIONS -- /dev/sda8
MOUNT_OPTIONS -- -o acl,user_xattr /dev/sda8 /fs/scratch
generic/001 2s
generic/002 0s
generic/003 14s
generic/004 0s
generic/005 1s
generic/006 0s
generic/007 0s
generic/008 1s
generic/009 1s
generic/011 0s
generic/012 2s
generic/014 0s
generic/015 0s
generic/016 2s
generic/018 [not run] defragmentation not supported for fstype "f2fs"
generic/020 0s
generic/021 2s
generic/022 2s
generic/023 1s
generic/024 0s
generic/025 0s
generic/026 - output mismatch (see /lkp/benchmarks/xfstests/results//generic/026.out.bad)
--- tests/generic/026.out 2016-11-10 09:18:29.000000000 +0800
+++ /lkp/benchmarks/xfstests/results//generic/026.out.bad 2017-03-30 02:03:20.925483449 +0800
@@ -4,6 +4,6 @@
1 below acl max
acl max
1 above acl max
-chacl: cannot set access acl on "largeaclfile": Argument list too long
+Wrong ACL count - 532 != 531
use 16 aces
use 17 aces
...
(Run 'diff -u tests/generic/026.out /lkp/benchmarks/xfstests/results//generic/026.out.bad' to see the entire diff)
generic/028 5s
generic/029 3s
generic/030 3s
generic/031 2s
generic/032 35s
generic/033 2s
generic/034 2s
generic/035 1s
generic/036 11s
generic/037 4s
generic/039 3s
generic/040 5s
generic/041 6s
generic/042 [failed, exit status 1] - output mismatch (see /lkp/benchmarks/xfstests/results//generic/042.out.bad)
--- tests/generic/042.out 2016-11-10 09:18:29.000000000 +0800
+++ /lkp/benchmarks/xfstests/results//generic/042.out.bad 2017-03-30 02:05:16.444481154 +0800
@@ -1,10 +1 @@
QA output created by 042
-falloc -k
-wrote 65536/65536 bytes at offset 0
-XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-fpunch
-wrote 65536/65536 bytes at offset 0
-XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
...
(Run 'diff -u tests/generic/042.out /lkp/benchmarks/xfstests/results//generic/042.out.bad' to see the entire diff)
generic/043 16s
generic/044 17s
generic/045 17s
generic/046 16s
generic/047 46s
generic/048 104s
generic/049 10s
generic/050 5s
generic/051 97s
generic/052 5s
generic/053 5s
generic/054 111s
generic/055 60s
generic/056 3s
generic/057 2s
generic/058 3s
generic/059 3s
generic/060 2s
generic/061 2s
generic/062 3s
generic/064 5s
generic/065 3s
generic/066 - output mismatch (see /lkp/benchmarks/xfstests/results//generic/066.out.bad)
--- tests/generic/066.out 2016-11-10 09:18:29.000000000 +0800
+++ /lkp/benchmarks/xfstests/results//generic/066.out.bad 2017-03-30 02:14:51.353469734 +0800
@@ -6,5 +6,6 @@
xattr names and values after second fsync log replay:
# file: SCRATCH_MNT/foobar
+user.attr1="val1"
user.attr3="val3"
...
(Run 'diff -u tests/generic/066.out /lkp/benchmarks/xfstests/results//generic/066.out.bad' to see the entire diff)
generic/067 2s
generic/069 4s
generic/071 3s
generic/072 4s
generic/073 3s
generic/077 32s
generic/078 0s
generic/079 2s
generic/080 2s
generic/082 [not run] disk quotas not supported by this filesystem type: f2fs
generic/084 7s
generic/085 4s
generic/086 0s
generic/087 0s
Ran: generic/001 generic/002 generic/003 generic/004 generic/005 generic/006 generic/007 generic/008 generic/009 generic/011 generic/012 generic/014 generic/015 generic/016 generic/020 generic/021 generic/022 generic/023 generic/024 generic/025 generic/026 generic/028 generic/029 generic/030 generic/031 generic/032 generic/033 generic/034 generic/035 generic/036 generic/037 generic/039 generic/040 generic/041 generic/042 generic/043 generic/044 generic/045 generic/046 generic/047 generic/048 generic/049 generic/050 generic/051 generic/052 generic/053 generic/054 generic/055 generic/056 generic/057 generic/058 generic/059 generic/060 generic/061 generic/062 generic/064 generic/065 generic/066 generic/067 generic/069 generic/071 generic/072 generic/073 generic/077 generic/078 generic/079 generic/080 generic/084 generic/085 generic/086 generic/087
Not run: generic/018 generic/082
Failures: generic/026 generic/042 generic/066
Failed 3 of 71 tests
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Thanks,
Xiaolong
4 years
[lkp-robot] [mm, page_alloc] b7ef62aa8a: BUG:kernel_hang_in_boot_stage
by kernel test robot
FYI, we noticed the following commit:
commit: b7ef62aa8a7aebb156ce093e3215fb821426fc1b ("mm, page_alloc: split smallest stolen page in fallback")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -m 512M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+------------------------------------------------------------------+------------+------------+
| | f7b7744467 | b7ef62aa8a |
+------------------------------------------------------------------+------------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 4 | 4 |
| invoked_oom-killer:gfp_mask=0x | 4 | |
| Mem-Info | 4 | |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 4 | |
| BUG:kernel_hang_in_boot_stage | 0 | 4 |
+------------------------------------------------------------------+------------+------------+
[ 2.398650] BTRFS: selftest: Running find delalloc tests
[ 2.413373] tsc: Refined TSC clocksource calibration: 2260.994 MHz
[ 2.414891] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x209745a29ae, max_idle_ns: 440795217760 ns
Elapsed time: 460
BUG: kernel hang in boot stage
initrds=(
/osimage/yocto/yocto-minimal-x86_64-2016-04-22.cgz
/lkp/scheduled/vm-lkp-nex04-yocto-x86_64-11/boot-1-yocto-minimal-x86_64-2016-04-22.cgz-b7ef62aa8a7aebb156ce093e3215fb821426fc1b-20170321-127060-hr3r1t-0.cgz
/lkp/lkp/lkp-x86_64.cgz
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
4 years
[locking/ww_mutex] 857811a371 BUG: kernel hang in boot stage
by Fengguang Wu
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 857811a37129f5d2ba162d7be3986eff44724014
Author: Boqun Feng <boqun.feng(a)gmail.com>
AuthorDate: Wed Mar 1 23:01:38 2017 +0800
Commit: Ingo Molnar <mingo(a)kernel.org>
CommitDate: Thu Mar 2 09:00:39 2017 +0100
locking/ww_mutex: Adjust the lock number for stress test
Because there are only 12 bits in held_lock::references, so we only
support 4095 nested lock held in the same time, adjust the lock number
for ww_mutex stress test to kill one lockdep splat:
[ ] [ BUG: bad unlock balance detected! ]
[ ] kworker/u2:0/5 is trying to release lock (ww_class_mutex) at:
[ ] ww_mutex_unlock()
[ ] but there are no more locks to release!
...
Signed-off-by: Boqun Feng <boqun.feng(a)gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz(a)infradead.org>
Cc: Andrew Morton <akpm(a)linux-foundation.org>
Cc: Chris Wilson <chris(a)chris-wilson.co.uk>
Cc: Fengguang Wu <fengguang.wu(a)intel.com>
Cc: Linus Torvalds <torvalds(a)linux-foundation.org>
Cc: Nicolai Hähnle <Nicolai.Haehnle(a)amd.com>
Cc: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz(a)infradead.org>
Cc: Thomas Gleixner <tglx(a)linutronix.de>
Link: http://lkml.kernel.org/r/20170301150138.hdixnmafzfsox7nn@tardis.cn.ibm.com
Signed-off-by: Ingo Molnar <mingo(a)kernel.org>
7fb4a2cea6 locking/lockdep: Add nest_lock integrity test
857811a371 locking/ww_mutex: Adjust the lock number for stress test
c02ed2e75e Linux 4.11-rc4
7f0c4a163a Add linux-next specific files for 20170327
+-----------------------------------------------------+------------+------------+-----------+---------------+
| | 7fb4a2cea6 | 857811a371 | v4.11-rc4 | next-20170327 |
+-----------------------------------------------------+------------+------------+-----------+---------------+
| boot_successes | 0 | 16 | 29 | 1 |
| boot_failures | 221 | 42 | 64 | 9 |
| WARNING:at_kernel/locking/lockdep.c:#__lock_acquire | 221 | | | |
| BUG:kernel_hang_in_boot_stage | 0 | 42 | 60 | 9 |
| BUG:kernel_hang_in_test_stage | 0 | 0 | 4 | |
+-----------------------------------------------------+------------+------------+-----------+---------------+
[ 319.426004] CPU 0 is now offline
[ 319.426004] CPU 0 is now offline
[ 319.427670]
<kernel hangs here>
In some other cases the kernel hangs after the "clocksource: tsc: ..."
lines:
[ 5.850623] Unpacking initramfs...
[ 5.850623] Unpacking initramfs...
[ 11.046171] debug: unmapping init [mem 0xffff9bcade91d000-0xffff9bcadffcffff]
[ 11.046171] debug: unmapping init [mem 0xffff9bcade91d000-0xffff9bcadffcffff]
[ 11.088197] Scanning for low memory corruption every 60 seconds
[ 11.088197] Scanning for low memory corruption every 60 seconds
[ 11.092145] des3_ede-x86_64: performance on this CPU would be suboptimal: disabling des3_ede-x86_64.
[ 11.092145] des3_ede-x86_64: performance on this CPU would be suboptimal: disabling des3_ede-x86_64.
[ 11.097470] camellia-x86_64: performance on this CPU would be suboptimal: disabling camellia-x86_64.
[ 11.097470] camellia-x86_64: performance on this CPU would be suboptimal: disabling camellia-x86_64.
[ 11.124182] twofish-x86_64-3way: performance on this CPU would be suboptimal: disabling twofish-x86_64-3way.
[ 11.124182] twofish-x86_64-3way: performance on this CPU would be suboptimal: disabling twofish-x86_64-3way.
[ 11.128731] PCLMULQDQ-NI instructions are not detected.
[ 11.128731] PCLMULQDQ-NI instructions are not detected.
[ 11.137487] AVX or AES-NI instructions are not detected.
[ 11.137487] AVX or AES-NI instructions are not detected.
[ 11.149155] CPU feature 'AVX registers' is not supported.
[ 11.149155] CPU feature 'AVX registers' is not supported.
[ 11.172390] CPU feature 'AVX registers' is not supported.
[ 11.172390] CPU feature 'AVX registers' is not supported.
[ 11.175234] AVX2 or AES-NI instructions are not detected.
[ 11.175234] AVX2 or AES-NI instructions are not detected.
[ 11.193555] AVX2 instructions are not detected.
[ 11.193555] AVX2 instructions are not detected.
[ 12.128030] tsc: Refined TSC clocksource calibration: 2926.330 MHz
[ 12.128030] tsc: Refined TSC clocksource calibration: 2926.330 MHz
[ 12.131287] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x2a2e6c2e1bb, max_idle_ns: 440795237926 ns
[ 12.131287] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x2a2e6c2e1bb, max_idle_ns: 440795237926 ns
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start 6ec9c2f12955a217a0b7c1512fc7d889024e15b3 v4.10 --
git bisect bad 34bbce9e344b47e8871273409632f525973afad4 # 17:11 B 4 1 0 1 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
git bisect good 1802979ab1ee8ec5a72987ad518f5a91bf41cd89 # 17:34 G 52 0 52 54 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
git bisect good 4f1f2b8f0818af9b0e21ba4b17ab615e29b4650d # 18:00 G 52 0 52 56 Merge tag 'watchdog-for-linus-v4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
git bisect good 33a8b3e99dc68abfe25e140144ad268e70660be3 # 18:19 G 53 0 53 56 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
git bisect good 26db8f992444a87465fc01b264b0317a3943e2b6 # 18:42 G 56 0 56 56 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad bd0f9b356d00aa241ced36fb075a07041c28d3b8 # 18:58 B 1 4 0 0 sched/headers: fix up header file dependency on <linux/sched/signal.h>
git bisect bad 609b07b72d3caaa8eed3a238886467946b78fa5e # 19:22 B 2 6 0 0 Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 500e1af25209a048daa1f1f86083d4849d5c555b # 19:39 B 4 4 0 0 Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 2b232e0c3b3a09f3e33750aa20e314f1b80e5361 # 20:04 G 51 0 51 51 locking/ww_mutex: Replace cpu_relax() with cond_resched() for tests
git bisect bad 857811a37129f5d2ba162d7be3986eff44724014 # 20:22 B 2 3 0 0 locking/ww_mutex: Adjust the lock number for stress test
git bisect good 7fb4a2cea6b18dab56d609530d077f168169ed6b # 20:47 G 52 0 52 52 locking/lockdep: Add nest_lock integrity test
# first bad commit: [857811a37129f5d2ba162d7be3986eff44724014] locking/ww_mutex: Adjust the lock number for stress test
git bisect good 7fb4a2cea6b18dab56d609530d077f168169ed6b # 21:14 G 158 0 158 212 locking/lockdep: Add nest_lock integrity test
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect bad 857811a37129f5d2ba162d7be3986eff44724014 # 21:35 B 5 1 0 0 locking/ww_mutex: Adjust the lock number for stress test
# extra tests on HEAD of linux-devel/devel-catchup-201703271346
git bisect bad 791a4b24aa658106743fb3917d08494fbd1f994f # 21:35 B 0 5 28 9 0day head guard for 'devel-catchup-201703271346'
# extra tests on tree/branch linus/master
git bisect bad c02ed2e75ef4c74e41e421acb4ef1494671585e8 # 21:35 B 8 60 0 3 Linux 4.11-rc4
# extra tests with first bad commit reverted
git bisect good 2b3df4779b539136f0a6152a23c069e72b254d16 # 21:55 G 55 0 55 55 Revert "locking/ww_mutex: Adjust the lock number for stress test"
# extra tests on tree/branch linux-next/master
git bisect bad 7f0c4a163aa51c7b924bbafbe2013838d7ddaed0 # 22:17 B 1 6 0 0 Add linux-next specific files for 20170327
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
4 years
[lkp-robot] [sched] 994b35a3d3: BUG:KASAN:null-ptr-deref_on_address
by kernel test robot
FYI, we noticed the following commit:
commit: 994b35a3d3fb485ba1f56799458f317597842d86 ("sched: force update of blocked load of idle cpus")
git://internal_merge_and_test_tree devel-catchup-201703281557
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu host -smp 2 -m 2G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-------------------------------------------------------+------------+------------+
| | 05b40e0577 | 994b35a3d3 |
+-------------------------------------------------------+------------+------------+
| boot_successes | 7 | 0 |
| boot_failures | 1 | 8 |
| BUG:workqueue_lockup-pool | 1 | |
| BUG:kernel_hang_in_test_stage | 0 | 4 |
| BUG:KASAN:null-ptr-deref_on_address | 0 | 4 |
| BUG:unable_to_handle_kernel | 0 | 4 |
| Oops:#[##] | 0 | 4 |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 4 |
+-------------------------------------------------------+------------+------------+
[ 7.607217] BUG: KASAN: null-ptr-deref on address 0000000000000028
[ 7.623033] Read of size 4 by task swapper/1/0
[ 7.634079] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.11.0-rc2-00228-g994b35a #1
[ 7.653558] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 7.679580] Call Trace:
[ 7.687907] <IRQ>
[ 7.694222] dump_stack+0xb3/0x113
[ 7.702786] kasan_report_error+0x424/0x510
[ 7.714540] ? debug_check_no_locks_freed+0x1c0/0x1c0
[ 7.728249] ? __lock_is_held+0x52/0x100
[ 7.739881] kasan_report+0x34/0x40
[ 7.749580] ? run_rebalance_domains+0x191/0x610
[ 7.762016] __asan_load4+0x61/0x80
[ 7.771742] run_rebalance_domains+0x191/0x610
[ 7.783732] ? run_rebalance_domains+0x10f/0x610
[ 7.796829] ? kvm_sched_clock_read+0x25/0x40
[ 7.809336] ? sched_clock+0x9/0x10
[ 7.819577] ? __do_softirq+0xde/0x343
[ 7.830297] __do_softirq+0x172/0x343
[ 7.840925] irq_exit+0x118/0x120
[ 7.850295] scheduler_ipi+0xda/0x220
[ 7.860342] smp_reschedule_interrupt+0x3d/0x40
[ 7.872496] reschedule_interrupt+0x93/0xa0
[ 7.883968] RIP: 0010:native_safe_halt+0x6/0x10
[ 7.895958] RSP: 0000:ffff880063cefe90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff02
[ 7.915068] RAX: ffffed000c79c0f5 RBX: ffff880063ce0000 RCX: ffffffff86b627c7
[ 7.932150] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff880063ce07ac
[ 7.946479] RBP: ffff880063cefe90 R08: 0000000000000003 R09: 0000000000000000
[ 7.963331] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880063ce0000
[ 7.980240] R13: ffffffff87f23d18 R14: 0000000000000000 R15: 0000000000000000
[ 7.997735] </IRQ>
[ 8.005229] ? trace_hardirqs_on_caller+0x187/0x280
[ 8.018249] default_idle+0xe/0x20
[ 8.202157] arch_cpu_idle+0xa/0x10
[ 8.212460] default_idle_call+0x27/0x40
[ 8.223575] do_idle+0x1d6/0x270
[ 8.233201] cpu_startup_entry+0x18/0x20
[ 8.244548] start_secondary+0x1c0/0x220
[ 8.254296] start_cpu+0x14/0x14
[ 8.263179] ==================================================================
[ 8.282822] Disabling lock debugging due to kernel taint
[ 8.296044] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
[ 8.315614] IP: run_rebalance_domains+0x195/0x610
[ 8.329741] PGD 0
[ 8.329773]
[ 8.342837] Oops: 0000 [#1] SMP KASAN
[ 8.352847] Modules linked in:
[ 8.361884] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G B 4.11.0-rc2-00228-g994b35a #1
[ 8.383829] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 8.408453] task: ffff880063ce0000 task.stack: ffff880063ce8000
[ 8.427569] RIP: 0010:run_rebalance_domains+0x195/0x610
[ 8.456415] RSP: 0000:ffff880064b07e80 EFLAGS: 00010296
[ 8.490307] RAX: ffff880063ce0000 RBX: ffff880064b159b0 RCX: ffffffff86b62656
[ 8.524915] RDX: 0000000000000004 RSI: 0000000000000003 RDI: 0000000000000060
[ 8.550579] RBP: ffff880064b07f18 R08: 0000000000000003 R09: 0000000000000001
[ 8.567047] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffff8d37
[ 8.583929] R13: 0000000000000000 R14: ffff880064b21680 R15: 0000000000000001
[ 8.600487] FS: 0000000000000000(0000) GS:ffff880064b00000(0000) knlGS:0000000000000000
[ 8.620745] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.634484] CR2: 0000000000000028 CR3: 000000001f013000 CR4: 00000000000006a0
[ 8.650392] Call Trace:
[ 8.658077] <IRQ>
[ 8.664909] ? run_rebalance_domains+0x10f/0x610
[ 8.676388] ? kvm_sched_clock_read+0x25/0x40
[ 8.687214] ? sched_clock+0x9/0x10
[ 8.696480] ? __do_softirq+0xde/0x343
[ 8.706421] __do_softirq+0x172/0x343
[ 8.716175] irq_exit+0x118/0x120
[ 8.725517] scheduler_ipi+0xda/0x220
[ 8.735134] smp_reschedule_interrupt+0x3d/0x40
[ 8.746355] reschedule_interrupt+0x93/0xa0
[ 8.756916] RIP: 0010:native_safe_halt+0x6/0x10
[ 8.768255] RSP: 0000:ffff880063cefe90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff02
[ 8.786759] RAX: ffffed000c79c0f5 RBX: ffff880063ce0000 RCX: ffffffff86b627c7
[ 8.802601] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff880063ce07ac
[ 8.819430] RBP: ffff880063cefe90 R08: 0000000000000003 R09: 0000000000000000
[ 8.867009] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880063ce0000
[ 8.891742] R13: ffffffff87f23d18 R14: 0000000000000000 R15: 0000000000000000
[ 8.907327] </IRQ>
[ 8.914975] ? trace_hardirqs_on_caller+0x187/0x280
[ 8.930547] default_idle+0xe/0x20
[ 8.939876] arch_cpu_idle+0xa/0x10
[ 8.949373] default_idle_call+0x27/0x40
[ 8.959512] do_idle+0x1d6/0x270
[ 8.968494] cpu_startup_entry+0x18/0x20
[ 8.978794] start_secondary+0x1c0/0x220
[ 8.989010] start_cpu+0x14/0x14
[ 8.997859] Code: e8 61 86 16 00 4c 8b 2b e8 29 27 04 00 85 c0 74 0d 80 3d 76 c9 19 01 00 0f 84 28 04 00 00 49 8d 7d 28 e8 3f 85 16 00 49 8d 7d 60 <41> 8b 5d 28 e8 32 85 16 00 41 8b 45 60 89 df bb 01 00 00 00 48
[ 9.068790] RIP: run_rebalance_domains+0x195/0x610 RSP: ffff880064b07e80
[ 9.084410] CR2: 0000000000000028
[ 9.093483] ---[ end trace 426c09725ae0951b ]---
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
4 years
[lkp-robot] [brd] 88de48a579: kmsg.Dev_ram#:unable_to_read_RDB_block
by kernel test robot
FYI, we noticed the following commit:
commit: 88de48a57949c9329c99de454936fd3e8bbf0e65 ("brd: remove discard support")
git://git.infradead.org/users/hch/block.git discard-rework
in testcase: pft
with following parameters:
test-description: Pft is the page fault test micro benchmark.
test-url: https://github.com/gormanm/pft
on test machine: qemu-system-x86_64 -enable-kvm -cpu Penryn -smp 4 -m 2G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
[ 15.149623] Dev ram0: unable to read RDB block 1
[ 15.150913] Buffer I/O error on dev ram0, logical block 0, async page read
[ 15.152676] Buffer I/O error on dev ram0, logical block 0, async page read
[ 15.154596] ram0: unable to read partition table
[ 15.156674] ldm_validate_partition_table(): Disk read failed.
[ 15.157976] Dev ram1: unable to read RDB block 0
[ 15.159202] ram1: unable to read partition table
[ 15.161227] ldm_validate_partition_table(): Disk read failed.
[ 15.163144] FDC 0 is a S82078B
[ 15.166449] Dev ram2: unable to read RDB block 0
[ 15.167751] ram2: unable to read partition table
[ 15.169806] ldm_validate_partition_table(): Disk read failed.
[ 15.171468] Dev ram3: unable to read RDB block 0
[ 15.172816] ram3: unable to read partition table
[ 15.175026] ldm_validate_partition_table(): Disk read failed.
[ 15.176619] Dev ram4: unable to read RDB block 0
[ 15.177990] ram4: unable to read partition table
[ 15.180079] ldm_validate_partition_table(): Disk read failed.
[ 15.181671] Dev ram5: unable to read RDB block 0
[ 15.183083] ram5: unable to read partition table
[ 15.185175] ldm_validate_partition_table(): Disk read failed.
[ 15.186821] Dev ram6: unable to read RDB block 0
[ 15.188202] ram6: unable to read partition table
[ 15.190408] ldm_validate_partition_table(): Disk read failed.
[ 15.192003] Dev ram7: unable to read RDB block 0
[ 15.193339] ram7: unable to read partition table
[ 15.195456] ldm_validate_partition_table(): Disk read failed.
[ 15.197032] Dev ram8: unable to read RDB block 0
[ 15.198435] ram8: unable to read partition table
[ 15.200500] ldm_validate_partition_table(): Disk read failed.
[ 15.202075] Dev ram9: unable to read RDB block 0
[ 15.203485] ram9: unable to read partition table
[ 15.205525] ldm_validate_partition_table(): Disk read failed.
[ 15.207185] Dev ram10: unable to read RDB block 0
[ 15.208508] ram10: unable to read partition table
[ 15.210653] ldm_validate_partition_table(): Disk read failed.
[ 15.212270] Dev ram11: unable to read RDB block 0
[ 15.213620] ram11: unable to read partition table
[ 15.215747] ldm_validate_partition_table(): Disk read failed.
[ 15.217333] Dev ram12: unable to read RDB block 0
[ 15.218781] ram12: unable to read partition table
[ 15.220910] ldm_validate_partition_table(): Disk read failed.
[ 15.222631] Dev ram13: unable to read RDB block 0
[ 15.224010] ram13: unable to read partition table
[ 15.226111] ldm_validate_partition_table(): Disk read failed.
[ 15.227747] Dev ram14: unable to read RDB block 0
[ 15.229201] ram14: unable to read partition table
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
4 years