This was flagged by Address sanitizer as a use after free in Linux. A pointer is freed in the main thread but used by a callback in another thread. It can be reliably reproduced in Linux with ASAN but I could not trigger the same issue in FreeBSD.
I've included nearly identical patches for Linux and FreeBSD. I did not include any changes for Windows since the same issue does not seem to apply there (thread is actually cancelled, no shared ptr). Bugzilla ID: 1683 Rui Ferreira (2): fix eal/linux: unregister alarm callback before free fix eal/freebsd: unregister alarm callback before free .mailmap | 1 + lib/eal/freebsd/eal.c | 3 ++- lib/eal/freebsd/eal_alarm.c | 8 +++++++- lib/eal/linux/eal.c | 3 ++- lib/eal/linux/eal_alarm.c | 9 ++++++++- 5 files changed, 20 insertions(+), 4 deletions(-) -- 2.43.0
