Dewayne Geraghty
2018-Apr-26 04:17 UTC
gptboot broken when compiled with clang 6 and WITHOUT_LOADER_GELI -- clang 5 is OK
Andre, You're not alone.? I think there's a problem with clang6 on i386 FreeBSD 11.1X, refer: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227552 https://forums.freebsd.org/threads/uptime-w-i386-breakage.65584/ and perhaps also on amd64, search for https://bugs.freebsd.org/bugzilla/buglist.cgi?quicksearch=clang&list_id=226390. Without time to investigate I've reverted userland FreeBSD 11.2-PRERELEASE? r332843M??? amd64 1101515 1101509 FreeBSD 11.2-PRERELEASE? r332843M??? i386 1101515 1101509 Apologies for my earlier email, I'd missed setting content-type: text/plain instead of text/html (the latter strips content to the mailing list), too many management memo's! ;)
Dimitry Andric
2018-Apr-26 10:06 UTC
gptboot broken when compiled with clang 6 and WITHOUT_LOADER_GELI -- clang 5 is OK
On 26 Apr 2018, at 06:17, Dewayne Geraghty <dewayne.geraghty at heuristicsystems.com.au> wrote:> > Andre, You're not alone. I think there's a problem with clang6 on i386 > FreeBSD 11.1X, refer: > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227552 > https://forums.freebsd.org/threads/uptime-w-i386-breakage.65584/ > and perhaps also on amd64, search for > https://bugs.freebsd.org/bugzilla/buglist.cgi?quicksearch=clang&list_id=226390. > > Without time to investigate I've reverted userland > FreeBSD 11.2-PRERELEASE r332843M amd64 1101515 1101509 > FreeBSD 11.2-PRERELEASE r332843M i386 1101515 1101509As noted in another post, I cannot reproduce the problems with gptboot, but with FreeBSD-11.2-PRERELEASE-i386-20180420-r332802, I do indeed see w and uptime crashing in libxo: (gdb) bt #0 ifree (tsd=0x28000000) at arena.h:799 #1 0x2814b506 in __free (ptr=0x280601ef) at tsd.h:716 #2 0x2808bb07 in xo_do_emit_fields () at /usr/src/contrib/libxo/libxo/libxo.c:6419 #3 0x28089a1c in xo_do_emit (xop=<value optimized out>, flags=<value optimized out>, fmt=0x804ad4d "{:time-of-day/%s} ") at /usr/src/contrib/libxo/libxo/libxo.c:6470 #4 0x28089b61 in xo_emit (fmt=0x804ad4d "{:time-of-day/%s} ") at /usr/src/contrib/libxo/libxo/libxo.c:6541 #5 0x08049f50 in main (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/usr.bin/w/w.c:475 #6 0x080494cd in _start1 () #7 0x08049448 in _start () #8 0x00000000 in ?? () Not sure if this has anything to do with clang though, it looks more like a double free to me, at first glance. I'll do some debugging. -Dimitry -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 223 bytes Desc: Message signed with OpenPGP URL: <http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20180426/37d469cf/attachment.sig>