This is an automated cleanup. This bug report has been moved to QEMU's new bug tracker on gitlab.com and thus gets marked as 'expired' now. Please continue with the discussion here:
https://gitlab.com/qemu-project/qemu/-/issues/509 ** Changed in: qemu Status: New => Expired ** Bug watch added: gitlab.com/qemu-project/qemu/-/issues #509 https://gitlab.com/qemu-project/qemu/-/issues/509 -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1908626 Title: Atomic test-and-set instruction does not work on qemu-user Status in QEMU: Expired Bug description: I try to compile and run PostgreSQL/Greenplum database inside docker container/qemu-aarch64-static: ``` host: CentOS7 x86_64 container: centos:centos7.9.2009 --platform linux/arm64/v8 qemu-user-static: https://github.com/multiarch/qemu-user-static/releases/ ``` However, GP/PG's spinlock always gets stuck and reports PANIC errors. It seems its spinlock has something wrong. ``` https://github.com/greenplum-db/gpdb/blob/master/src/include/storage/s_lock.h https://github.com/greenplum-db/gpdb/blob/master/src/backend/storage/lmgr/s_lock.c ``` So I extract its spinlock implementation into one test C source file (see attachment file), and get reprodcued: ``` $ gcc spinlock_qemu.c $ ./a.out C -- slock inited, lock value is: 0 parent 139642, child 139645 P -- slock lock before, lock value is: 0 P -- slock locked, lock value is: 1 P -- slock unlock after, lock value is: 0 C -- slock lock before, lock value is: 1 P -- slock lock before, lock value is: 1 C -- slock locked, lock value is: 1 C -- slock unlock after, lock value is: 0 C -- slock lock before, lock value is: 1 P -- slock locked, lock value is: 1 P -- slock unlock after, lock value is: 0 P -- slock lock before, lock value is: 1 C -- slock locked, lock value is: 1 C -- slock unlock after, lock value is: 0 P -- slock locked, lock value is: 1 C -- slock lock before, lock value is: 1 P -- slock unlock after, lock value is: 0 C -- slock locked, lock value is: 1 P -- slock lock before, lock value is: 1 C -- slock unlock after, lock value is: 0 P -- slock locked, lock value is: 1 C -- slock lock before, lock value is: 1 P -- slock unlock after, lock value is: 0 C -- slock locked, lock value is: 1 P -- slock lock before, lock value is: 1 C -- slock unlock after, lock value is: 0 P -- slock locked, lock value is: 1 C -- slock lock before, lock value is: 1 P -- slock unlock after, lock value is: 0 P -- slock lock before, lock value is: 1 spin timeout, lock value is 1 (pid 139642) spin timeout, lock value is 1 (pid 139645) spin timeout, lock value is 1 (pid 139645) spin timeout, lock value is 1 (pid 139642) spin timeout, lock value is 1 (pid 139645) spin timeout, lock value is 1 (pid 139642) ... ... ... ``` NOTE: this code always works on PHYSICAL ARM64 server. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1908626/+subscriptions
