I'm new to kernel debugging, I'm trying to analyze the vmcore file using crash tool on RHEL 7. I'm trying to open the dump with below command.
crash /lib/debug/lib/modules/3.10.0-1160.80.1.el7.x86_64/vmlinux vmcore
but tools fails to load the vmcore with below error:
WARNING: kernel relocated [460MB]: patching 87472 gdb minimal_symbol values
crash: page excluded: kernel virtual address: ffffffffffffffff type: "possible"
WARNING: cannot read cpu_possible_map
crash: page excluded: kernel virtual address: ffffffffffffffff type: "present"
WARNING: cannot read cpu_present_map
crash: page excluded: kernel virtual address: ffffffffffffffff type: "online"
WARNING: cannot read cpu_online_map
crash: page excluded: kernel virtual address: ffffffffffffffff type: "active"
WARNING: cannot read cpu_active_map
WARNING: kernel version inconsistency between vmlinux and dumpfile
crash: page excluded: kernel virtual address: ffffffffffffffff type: "cpu_present_map"
crash: page excluded: kernel virtual address: ffffffffffffffff type: "cpu_present_map"
crash: cannot determine thread return address
WARNING: cannot determine pgdat list for this kernel/architecture
please wait... (gathering kmem slab cache data)
crash: invalid kernel virtual address: 1c type: "kmem_cache objsize/object_size"
Segmentation fault (core dumped)
I'm not sure this the vmcore file issue or crash tool issue. Can someone please help resolve this issue.
Thanks in advance
I tried to run gem5 fs mode with KVM to fast forward linux boot-up and failed with this error.
info: 0x4b564d04: 0x0
info: 0x3b: 0x0
info: 0x6e0: 0x0
info: 0x1a0: 0x0
info: 0x17a: 0x0
info: 0x17b: 0x0
info: 0x9e: 0x0
panic: KVM: Failed to enter virtualized mode (hw reason: 0x80000021)
Memory Usage: 33878524 KBytes
Program aborted at tick 186932115
--- BEGIN LIBC BACKTRACE ---
gem5/build/X86/gem5.opt(_Z15print_backtracev+0x28)[0x15e45d8]
gem5/build/X86/gem5.opt(_Z12abortHandleri+0x46)[0x15f5196]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x7fb3c9f7d390]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x38)[0x7fb3c8a72428]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x16a)[0x7fb3c8a7402a]
gem5/build/X86/gem5.opt[0x80f14f]
gem5/build/X86/gem5.opt[0x18cb151]
gem5/build/X86/gem5.opt(_ZN10BaseKvmCPU13handleKvmExitEv+0x1bc)[0x18cb8bc]
gem5/build/X86/gem5.opt(_ZN10BaseKvmCPU4tickEv+0x229)[0x18c8d69]
gem5/build/X86/gem5.opt(_ZN10EventQueue10serviceOneEv+0xd5)[0x15eb485]
gem5/build/X86/gem5.opt(_Z9doSimLoopP10EventQueue+0x48)[0x160a9c8]
gem5/build/X86/gem5.opt[0x160ad1f]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0xbd57f)[0x7fb3c93e557f]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x76ba)[0x7fb3c9f736ba]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7fb3c8b4441d]
--- END LIBC BACKTRACE ---
I've used the gem5art and slightly modified the runscript not to run spec benchmark and run /bin/bash instead. It seems that this error has happened a while ago and issued in here. It seems that this problem has been fixed by the gem5 v19 but got the same error code. Could anyone explain why this error happens and how to fix it?
Hello I am having issues in launching ios real device for testing.
My xcode version: 11.2.1 (11B500)
Appium Version : 1.13.0 (1.13.0.20190505.6)
These are my capabilities:
deviceSerialNumber: F71SVVQ2HG7F
[Xcode] identifier: bfda036179b938524f01eff8c673de3388a07fcc
[Xcode] deviceClass: iPhone
[Xcode] deviceName: iPhone 7
[Xcode] deviceIdentifier: bfda036179b938524f01eff8c673de3388a07fcc
[Xcode] productVersion: 13.1.1
[Xcode] buildVersion: 17A854
[Xcode] deviceSoftwareVersion: 13.1.1 (17A854)
[Xcode] deviceArchitecture: arm64
[Xcode] deviceTotalCapacity: 26495004672
[Xcode] deviceAvailableCapacity: 9949319168
[Xcode] deviceIsTransient: NO
[Xcode] ignored: NO
[Xcode] deviceIsBusy: NO
[Xcode] deviceIsPaired: YES
[Xcode] deviceIsActivated: YES
[Xcode] deviceActivationState: Activated
[Xcode] isPasscodeLocked: NO
[Xcode] deviceType:
[Xcode] supportedDeviceFamilies: (
[Xcode] 1
[Xcode] )
[Xcode] applications: (null)
[Xcode] provisioningProfiles: (null)
[Xcode] hasInternalSupport: NO
[Xcode] hasWritableSystem: NO
[Xcode] isSupportedOS: YES
[Xcode] bootArgs: (null)
[Xcode] nextBootArgs: (null)
[Xcode] connected: YES
[Xcode] isWirelessEnabled: NO
[Xcode] connectionType: direct
[Xcode] hostname: iPhone-7.local.
[Xcode] bonjourServiceName: d0:c5:f3:d7:01:46#fe80::d2c5:f3ff:fed7:146._apple-mobdev2._tcp.local.
[Xcode] activeProxiedDevice: (null)
[Xcode] } (13.1.1 (17A854))
This says xcode needs provisioning profile whereas I have set the certificates and profiles in the xode...
[Xcode] Testing failed:
[Xcode] "WebDriverAgentRunner" requires a provisioning profile. Select a provisioning profile in the Signing & Capabilities editor.
[Xcode] No signing certificate "iOS Development" found: No "iOS Development" signing certificate matching team ID "BNL4VQ2576" with a private key was found.
[Xcode] WebDriverAgentRunner:
[Xcode] WebDriverAgentRunner-Runner.app encountered an error (Failed to install or launch the test runner. (Underlying error: The file “WebDriverAgentRunner-Runner.app” couldn’t be opened because there is no such file. The file doesn’t exist. (Underlying error: The operation couldn’t be completed. No such file or directory)))
[Xcode] ** TEST EXECUTE FAILED **
[Xcode]
[Xcode]
[Xcode] Testing started on 'iPhone 7'
[Xcode]
[XCUITest] xcodebuild exited with code '65' and signal 'null'
[XCUITest] Launching WebDriverAgent on the device
[XCUITest] Carthage found: '/usr/local/bin/carthage'
[XCUITest] Killing running processes 'xcodebuild.*bfda036179b938524f01eff8c673de3388a07fcc, iproxy 8100' for the device bfda036179b938524f01eff8c673de3388a07fcc...
[XCUITest] 'pgrep -nif xcodebuild.*bfda036179b938524f01eff8c673de3388a07fcc' didn't detect any matching processes. Return code: 1
This says the folder is not present. I manually opened the directory and there is no folder there. I don't know how to get that folder.
[Xcode] 2019-11-22 16:17:12.722 xcodebuild[37042:259128] Error Domain=NSCocoaErrorDomain Code=260 "The file “WebDriverAgentRunner-Runner.app” couldn’t be opened because there is no such file." UserInfo={NSFilePath=/Users/ahmsam/Library/Developer/Xcode/DerivedData/WebDriverAgent-dikkwtrisltbeobjmfvpthwwekvs/Build/Products/Debug-iphoneos/WebDriverAgentRunner-Runner.app, NSUnderlyingError=0x7fdfc6b5e4c0 {Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory"}}
You need to setup WDA by following Full Manual configuration in http://appium.io/docs/en/drivers/ios-xcuitest-real-devices/#full-manual-configuration
(If you skipped any of the steps, WDA won't work)
Update the product bundle identifier with the custom one you added com.companyName.WebDriverAgentRunner
open WebDriverAgent.xcodeproj from /path/where/installed/lib/node_modules/appium/node_modules/appium-xcuitest-driver/WebDriverAgent in Xcode
Project -> Build
my app is working fine on simulator but when i am running on device its getting crash and showing these reports
Aug 11 15:02:04 unknown MobileMail[20218] : Received memory warning.
Aug 11 15:02:04 unknown UserEventAgent[12] : jetsam: kernel termination snapshot being created
Aug 11 15:02:04 unknown com.apple.launchd[1] : (UIKitApplication:com.apple.mobilephone[0xc8a9]) Exited: Killed: 9
Aug 11 15:02:04 unknown com.apple.launchd[1] : (UIKitApplication:com.apple.mobilemail[0x828b]) Exited: Killed: 9
Aug 11 15:02:04 unknown com.apple.launchd[1] : (UIKitApplication:com.christopher.pacificamodeling[0x8500]) Exited: Killed: 9
Aug 11 15:02:04 unknown com.apple.launchd[1] : (UIKitApplication:com.skype.skype[0xd976]) Exited: Killed: 9
Aug 11 15:02:05 unknown SpringBoard[16688] : Application 'Mail' exited abnormally with signal 9: Killed: 9
Aug 11 15:02:05 unknown SpringBoard[16688] : Application 'PacifiCA' exited abnormally with signal 9: Killed: 9
Aug 11 15:02:06 unknown SpringBoard[16688] : Application 'Skype' exited abnormally with signal 9: Killed: 9
Aug 11 15:02:06 unknown SpringBoard[16688] : Application 'Phone' exited abnormally with signal 9: Killed: 9
Aug 11 15:02:06 unknown DTPower[15342] : Task info failed for task com.christopher.pacificamodeling
Aug 11 15:02:06 unknown kernel[0] : launchd[20223] Builtin profile: MobileMail (sandbox)
Aug 11 15:02:06 unknown kernel[0] : launchd[20224] Builtin profile: container (sandbox)
Aug 11 15:02:06 unknown kernel[0] : launchd[20224] Container: /private/var/mobile/Applications/6BBDF6EB-1DB0-4CAB-8300-DC6CBA78C1AB [69] (sandbox)
First thing is to run the profiler from xcode menu as shown below:
then use the one highlighted below:
Finally you will see the blocks that is allocated the most expand any of them to see who is allocating it frequently. Go to that part and optimize it to avoid allocate/deallocate every time.
I am getting this error when writer.optimize() called I have caugh all exceptions but hopeless .writer is an instance of apache lucene Indexwriter and tomcat collapse when optimizing the indexwriter.I am trying to index a large number of file its works for a few number of file but when number of files increase it cause to tomcat fail.
logger.info("Optimizing optimazing...");
this.writer.optimize();
logger.info("Optimizing closing...");
this.writer.close();
logger.info("Optimazide and closed succesfully...");
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007fe6f8c38e90, pid=10316, tid=140629887768320
#
# JRE version: 6.0_20-b20
# Java VM: OpenJDK 64-Bit Server VM (19.0-b09 mixed mode linux-amd64 compressed oops)
# Derivative: IcedTea6 1.9.7
# Distribution: Ubuntu 10.10, package 6b20-1.9.7-0ubuntu1
# Problematic frame:
# V [libjvm.so+0x54ae90]
#
# If you would like to submit a bug report, please include
# instructions how to reproduce the bug and visit:
# https://bugs.launchpad.net/ubuntu/+source/openjdk-6/
#
--------------- T H R E A D ---------------
Current thread (0x00000000023e0000): JavaThread "CompilerThread0" daemon [_thread_in_native, id=10333, stack(0x00007fe6f2715000,0x00007fe6f2816000)]
siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR), si_addr=0x0000000000000008
Registers:
RAX=0x0000000000000000, RBX=0x00007fe6f2812930, RCX=0x00007fe6ec03e9e0, RDX=0x0000000000002000
RSP=0x00007fe6f2811150, RBP=0x00007fe6f2811190, RSI=0x00007fe6e43a20f0, RDI=0x0000000000000000
R8 =0x00007fe6e43f5a70, R9 =0x00007fe6f2812930, R10=0x00007fe6ec6f7948, R11=0x0000000000000000
R12=0x00007fe6edd326b0, R13=0x00007fe6ec6f7948, R14=0x00007fe6f2812950, R15=0x00007fe6ec068990
RIP=0x00007fe6f8c38e90, EFL=0x0000000000010206, CSGSFS=0x0000000000000033, ERR=0x0000000000000004
TRAPNO=0x000000000000000e
Register to memory mapping:
RAX=0x0000000000000000
0x0000000000000000 is pointing to unknown location
RBX=0x00007fe6f2812930
0x00007fe6f2812930 is pointing into the stack for thread: 0x00000000023e0000
"CompilerThread0" daemon prio=10 tid=0x00000000023e0000 nid=0x285d runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
RCX=0x00007fe6ec03e9e0
0x00007fe6ec03e9e0 is pointing to unknown location
RDX=0x0000000000002000
0x0000000000002000 is pointing to unknown location
RSP=0x00007fe6f2811150
0x00007fe6f2811150 is pointing into the stack for thread: 0x00000000023e0000
"CompilerThread0" daemon prio=10 tid=0x00000000023e0000 nid=0x285d runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
RBP=0x00007fe6f2811190
0x00007fe6f2811190 is pointing into the stack for thread: 0x00000000023e0000
"CompilerThread0" daemon prio=10 tid=0x00000000023e0000 nid=0x285d runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
RSI=0x00007fe6e43a20f0
0x00007fe6e43a20f0 is pointing to unknown location
RDI=0x0000000000000000
0x0000000000000000 is pointing to unknown location
R8 =0x00007fe6e43f5a70
0x00007fe6e43f5a70 is pointing to unknown location
R9 =0x00007fe6f2812930
0x00007fe6f2812930 is pointing into the stack for thread: 0x00000000023e0000
"CompilerThread0" daemon prio=10 tid=0x00000000023e0000 nid=0x285d runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
R10=0x00007fe6ec6f7948
0x00007fe6ec6f7948 is pointing to unknown location
R11=0x0000000000000000
0x0000000000000000 is pointing to unknown location
R12=0x00007fe6edd326b0
0x00007fe6edd326b0 is pointing to unknown location
R13=0x00007fe6ec6f7948
0x00007fe6ec6f7948 is pointing to unknown location
R14=0x00007fe6f2812950
0x00007fe6f2812950 is pointing into the stack for thread: 0x00000000023e0000
"CompilerThread0" daemon prio=10 tid=0x00000000023e0000 nid=0x285d runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
R15=0x00007fe6ec068990
0x00007fe6ec068990 is pointing to unknown location
Top of Stack: (sp=0x00007fe6f2811150)
0x00007fe6f2811150: 00007fe6e4522cd0 00007fe6f2811420
0x00007fe6f2811160: 00007fe6f2811190 00007fe6f2812930
0x00007fe6f2811170: 0000000000000002 00007fe6edd326b0
0x00007fe6f2811180: 00007fe6ec5d6430 00007fe6f2811420
0x00007fe6f2811190: 00007fe6f2811200 00007fe6f8c3941b
0x00007fe6f28111a0: 0000000000000002 00007fe600000100
0x00007fe6f28111b0: 00007fe600000001 00007fe6f28132d0
w-p 00021000 08:01 17301749 /lib/ld-2.12.1.so
7fe6fa020000-7fe6fa021000 rw-p 00000000 00:00 0
7fffd5558000-7fffd5579000 rw-p 00000000 00:00 0 [stack]
7fffd55ff000-7fffd5600000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
VM Arguments:
jvm_args: -Djava.util.logging.config.file=/home/murat/Desktop/servers/apache-tomcat-6.0.24/conf/logging.properties -Dhttp.nonProxyHosts=localhost|127.0.0.1|expertPC -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -agentlib:jdwp=transport=dt_socket,address=11550,server=y,suspend=n -Djava.endorsed.dirs=/home/murat/Desktop/servers/apache-tomcat-6.0.24/endorsed -Dcatalina.base=/home/murat/Desktop/servers/apache-tomcat-6.0.24 -Dcatalina.home=/home/murat/Desktop/servers/apache-tomcat-6.0.24 -Djava.io.tmpdir=/home/murat/Desktop/servers/apache-tomcat-6.0.24/temp
java_command: org.apache.catalina.startup.Bootstrap start
Launcher Type: SUN_STANDARD
Environment Variables:
JAVA_HOME=/usr/lib/jvm/java-6-openjdk
JRE_HOME=/usr/lib/jvm/java-6-openjdk
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
USERNAME=murat
LD_LIBRARY_PATH=/usr/lib/jvm/java-6-openjdk/jre/lib/amd64/server:/usr/lib/jvm/java-6-openjdk/jre/lib/amd64:/usr/lib/jvm/java-6-openjdk/jre/../lib/amd64
SHELL=/bin/bash
DISPLAY=:0.0
Signal Handlers:
SIGSEGV: [libjvm.so+0x723630], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
SIGBUS: [libjvm.so+0x723630], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
SIGFPE: [libjvm.so+0x5e0000], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
SIGPIPE: SIG_IGN, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGXFSZ: [libjvm.so+0x5e0000], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
SIGILL: [libjvm.so+0x5e0000], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGUSR2: [libjvm.so+0x5df710], sa_mask[0]=0x00000004, sa_flags=0x10000004
SIGHUP: [libjvm.so+0x5e2180], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
SIGINT: SIG_IGN, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGTERM: [libjvm.so+0x5e2180], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
SIGQUIT: [libjvm.so+0x5e2180], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004
--------------- S Y S T E M ---------------
OS:Ubuntu 10.10 (maverick)
uname:Linux 2.6.35-28-generic #50-Ubuntu SMP Fri Mar 18 18:42:20 UTC 2011 x86_64
libc:glibc 2.12.1 NPTL 2.12.1
rlimit: STACK 8192k, CORE 0k, NPROC infinity, NOFILE 1024, AS infinity
load average:0.77 0.30 0.14
/proc/meminfo:
MemTotal: 4054828 kB
MemFree: 176928 kB
Buffers: 207640 kB
Cached: 1332820 kB
SwapCached: 17608 kB
Active: 2419624 kB
Inactive: 1004992 kB
Active(anon): 1834536 kB
Inactive(anon): 67792 kB
Active(file): 585088 kB
Inactive(file): 937200 kB
Unevictable: 16 kB
Mlocked: 16 kB
SwapTotal: 11876348 kB
SwapFree: 11687616 kB
Dirty: 3508 kB
Writeback: 32 kB
AnonPages: 1873148 kB
Mapped: 197036 kB
Shmem: 18240 kB
Slab: 157916 kB
SReclaimable: 131452 kB
SUnreclaim: 26464 kB
KernelStack: 3928 kB
PageTables: 32140 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 13903760 kB
Committed_AS: 3427468 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 323536 kB
VmallocChunk: 34359412360 kB
HardwareCorrupted: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 272384 kB
DirectMap2M: 3919872 kB
CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model 23 stepping 10, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1
Memory: 4k page, physical 4054828k(176928k free), swap 11876348k(11687616k free)
vm_info: OpenJDK 64-Bit Server VM (19.0-b09) for linux-amd64 JRE (1.6.0_20-b20), built on Feb 23 2011 09:05:53 by "buildd" with gcc 4.4.5
time: Mon Jun 6 22:24:11 2011
elapsed time: 2076 seconds
As Stéphane says, try different JREs to see if you can get a different error message. There's a chance (but hard to quantify) that this is related to reaching a memory limit, but it'll be hard to be sure unless you do get an error saying which one!
Use sun/oracle java jdk, not the open jdk...
Regards,
Stéphane
Since it is most likely a bug in the JVM, the first thing I would try is updating your JVM to Java 6 update 25. You could try the Sun/Oracle JVM, but it likely to be the same.
I am assuming you are not using an JNI libraries?