Date: Sun, 12 May 2024 17:13:53 +0000 From: bugzilla-noreply@freebsd.org To: ports-bugs@FreeBSD.org Subject: [Bug 278939] comms/wsjtx: jt9 crash during decode because of non-executable stack Message-ID: <bug-278939-7788@https.bugs.freebsd.org/bugzilla/>
next in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D278939 Bug ID: 278939 Summary: comms/wsjtx: jt9 crash during decode because of non-executable stack Product: Ports & Packages Version: Latest Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: Individual Port(s) Assignee: hamradio@FreeBSD.org Reporter: jeffpc@josefsipek.net Flags: maintainer-feedback?(hamradio@FreeBSD.org) Assignee: hamradio@FreeBSD.org I freshly installed FreeBSD 14.0 and updated it to 14.0-RELEASE-p6. After a `pkg install wsjtx`, wsjtx (2.5.4_10) starts up fine but the jt9 helper pro= cess (used to decode FT4 & FT8 among other modes) terminates because of a SIGBUS= .=20 (That is, wsjtx runs fine collecting the rx audio, but at the end of the interval (e.g., 15s for FT8) it spawns jt9 to process it.) I rebuilt the wsjtx port which didn't help. However, using the unstripped binary led me to the following stack trace: (lldb) bt * thread #1, name =3D 'jt9', stop reason =3D signal SIGBUS * frame #0: 0x0000000820c4a2e8 frame #1: 0x0000000000249e03 jt9`__ft8_decode_MOD_decode + 4931 frame #2: 0x00000000002412e2 jt9`multimode_decoder_ + 4546 frame #3: 0x0000000000238c4e jt9`jt9a_ + 814 frame #4: 0x00000000002381ce jt9`MAIN__ + 7038 frame #5: 0x000000000023890f jt9`main + 31 frame #6: 0x000000082a852afa libc.so.7`__libc_start1 + 298 frame #7: 0x00000000002365e0 jt9`_start at crt1_s.S:83 On a hunch, I started disabling security related sysctls which "fixed" the SIGBUS crash. Specifically, I mucked with kern.elf64.aslr.enable. & kern.elf64.nxstack. aslr=3D1 & nxstack=3D1 --> crash (this is the default on the system) aslr=3D0 & nxstack=3D1 --> crash aslr=3D0 & nxstack=3D0 --> wsjtx works as expected I didn't try aslr=3D1 & nxstack=3D0 because I was too busy trying to use ws= jtx to make contacts (to see if there were any other issues - I haven't found any). --=20 You are receiving this mail because: You are the assignee for the bug.=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-278939-7788>