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Bug #1091

closed

lttng list --kernel --syscall fails on s390x with "Not enough memory" error

Added by Colin King over 7 years ago. Updated over 7 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
-
Target version:
-
Start date:
03/13/2017
Due date:
% Done:

100%

Estimated time:

Description

lttng tools, tip commit d30b2041e3a5db2d1671219ea845057cb3dd3082, built on s390x (Ubuntu 4.10.0-13-generic).

How to reproduce:

sudo ./src/bin/lttng/lttng list --kernel --syscall
Error: Unable to list system calls: Not enough memory
Error: Command error

Expected result:

list of syscalls, not an out of memory error.

strace of failure (near the end):

socket(AF_UNIX, SOCK_STREAM, 0) = 3
connect(3, {sa_family=AF_UNIX, sun_path="/var/run/lttng/client-lttng-sessiond"}, 110) = 0
geteuid() = 0
getegid() = 0
sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\0\0\0\4\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., iov_len=13156}], msg_iovlen=1, msg_control=[{cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS, cmsg_data={pid=9883, uid=0, gid=0}}], msg_controllen=28, msg_flags=0}, 0) = 13156
recvmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\0\0\0\4\0\0\0\32\0\0\0\0\0\0\0\0\0\0\0\0", iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 20
shutdown(3, SHUT_RDWR) = 0
close(3) = 0
write(2, "Error: Unable to list system cal"..., 54Error: Unable to list system calls: Not enough memory
) = 54
geteuid() = 0
getuid() = 0
getegid() = 0
getgid() = 0
write(2, "Error: Command error\n", 21Error: Command error
) = 21
exit_group(1) = ?

gcc v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/s390x-linux-gnu/6/lto-wrapper
Target: s390x-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 6.3.0-8ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-6 --program-prefix=s390x-linux-gnu --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libsanitizer --disable-libquadmath --enable-plugin --enable-default-pie --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-s390x/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-s390x --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-s390x --with-arch-directory=s390x --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch=zEC12 --with-long-double-128 --enable-multilib --enable-checking=release --build=s390x-linux-gnu --host=s390x-linux-gnu --target=s390x-linux-gnu
Thread model: posix
gcc version 6.3.0 20170221 (Ubuntu 6.3.0-8ubuntu1)

end of sudo lttng-sessiond -vvv shows that we have a vmalloc failure:

DEBUG1 - 14:25:37.954060 [10037/10081]: Woken up but nothing in the UST command queue (in thread_dispatch_ust_registration() at main.c:1891)
DEBUG1 - 14:25:37.954072 [10037/10082]: Got the wait shm fd 33 (in get_wait_shm() at shm.c:115)
DEBUG1 - 14:25:37.954074 [10037/10086]: Updating kernel poll set (in update_kernel_poll() at main.c:889)
DEBUG1 - 14:25:37.954100 [10037/10086]: Thread kernel polling (in thread_manage_kernel() at main.c:1099)
DEBUG1 - 14:25:37.953832 [10037/10087]: [load-session-thread] Load session (in thread_load_session() at load-session-thread.c:91)
DEBUG1 - 14:25:37.954079 [10037/10082]: Futex wait update active 1 (in futex_wait_update() at futex.c:66)
DEBUG1 - 14:25:37.954132 [10037/10082]: Accepting application registration (in thread_registration_apps() at main.c:2145)
DEBUG3 - 14:25:37.953889 [10037/10084]: [ust-thread] Manage notify polling (in ust_thread_manage_notify() at ust-thread.c:69)
DEBUG1 - 14:25:42.577842 [10037/10080]: Wait for client response (in thread_manage_clients() at main.c:4444)
DEBUG1 - 14:25:42.577865 [10037/10080]: Receiving data from client ... (in thread_manage_clients() at main.c:4489)
DEBUG1 - 14:25:42.577999 [10037/10080]: Processing client command 4 (in process_client_msg() at main.c:2980)
DEBUG1 - 14:25:42.578010 [10037/10080]: Syscall table listing. (in syscall_table_list() at syscall.c:280)
PERROR - 14:25:42.578021 [10037/10080]: syscall table list zmalloc: Cannot allocate memory (in syscall_table_list() at syscall.c:291)
DEBUG3 - 14:25:42.578027 [10037/10080]: Destroying syscall hash table. (in destroy_syscall_ht() at syscall.c:159)
DEBUG1 - 14:25:42.578030 [10037/10080]: Missing llm structure. Allocating one. (in process_client_msg() at main.c:4124)
DEBUG1 - 14:25:42.578032 [10037/10080]: Sending response (size: 20, retcode: Not enough memory (26)) (in thread_manage_clients() at main.c:4539)
DEBUG1 - 14:25:42.578041 [10037/10080]: Clean command context structure (in clean_command_ctx() at main.c:785)
DEBUG1 - 14:25:42.578043 [10037/10080]: Accepting client command ... (in thread_manage_clients() at main.c:4392)

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