We are trying to measure heap consumption for one of our application with valgrind ( version 3.9.0) And we are getting following warnings on ppc64 board --11713-- WARNING: Serious error when reading debug info --11713-- When reading debug info from /lib64/libc-2.20.so: --11713-- parse_type_DIE: confused by the above DIE --11713-- WARNING: unhandled syscall: 365 --11713-- You may be able to write your own handler. --11713-- Read the file README_MISSING_SYSCALL_OR_IOCTL. --11713-- Nevertheless we consider this a bug. Please report --11713-- it at http://valgrind.org/support/bug_reports.html. --11713-- WARNING: unhandled syscall: 365 --11713-- You may be able to write your own handler. --11713-- Read the file README_MISSING_SYSCALL_OR_IOCTL. --11713-- Nevertheless we consider this a bug. Please report --11713-- it at http://valgrind.org/support/bug_reports.html. QMan: Allocated lookup table at 0x8df0960, entry count 32769 --11713-- WARNING: unhandled syscall: 350 --11713-- You may be able to write your own handler. --11713-- Read the file README_MISSING_SYSCALL_OR_IOCTL. --11713-- Nevertheless we consider this a bug. Please report Reproducible: Always
This bug report seems to be about a problem in the debug info reader and missing syscall handlers, and not about callgrind. Therefore, reassigning to "General". However, 3.9.0 is quite old. You should test with newest release (3.11) or better the current SVN version.
Hi Josef, Thanks. I have checked the latest version of Valgrind 3.11 and these syscall handlers are not implemented in newer version as well on PPC64 architecture. Please help me how can I proceed further to resolve this issue. Regards, Abhishek
350 is sys_setns. 365, I don't know. include/vki/vki-scnums-ppc64-linux.h only lists up to 360 so I guess it needs some updating.
PPC64 syscall 365 is NR_membarrier.
The membarrier() system call was added in Linux 4.3. http://www.man7.org/linux/man-pages/man2/membarrier.2.html Which contains a small test program that also fails on amd64-linux. WARNING: unhandled amd64-linux syscall: 324
BTW. This is an awesome overview of all the linux syscalls by architectures: https://fedora.juszkiewicz.com.pl/syscalls.html
Hi, Do we have any update how to add this 'membarrier' syscall in valgrind? Regards, Abhishek
Hi Abhishek, Please follow README_MISSING_SYSCALL_OR_IOCTL and provide a patch. Thank you!
commit 959a54cb3a631bb61420f1784a0c8585af24349e Author: Bart Van Assche <bart.vanassche@wdc.com> Date: Fri Jun 15 08:24:53 2018 -0700 Add support for the Linux membarrier() system call Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> commit fbefb81c3cb85af61252e2f6b54f77c506bfe13a Author: Mark Wielaard <mark@klomp.org> Date: Tue Sep 18 18:21:21 2018 +0200 Hook up linux membarrier syscall for ppc64[le] Fixes none/tests/linux/membarrier on ppc64[le] platforms.