228517 PR36533 2008-06-20 11:55 0000 [4.3/wrong-code] causes ext* filesystems to oops: BUG: unable to handle kernel paging request at <first byte, next page> 2008-07-09 09:16:54 0000 1 1 1 Unclassified Gentoo Linux GCC Porting 2008.0 x86 Linux RESOLVED FIXED http://gcc.gnu.org/PR36533 P2 normal --- 198121 1 loki_val@gentoo.org toolchain@gentoo.org galtgendo@o2.pl holger.hoffstaette@googlemail.com kernel@gentoo.org loki_val@gentoo.org 2008-06-20 11:55:30 0000 Upstream bug: "Incorrectly assumed aligned_operand" This is a regression from gcc-4.3.0->gcc-4.3.1 introduced by the fix for PR28690: http://gcc.gnu.org/bugzilla/show_bug.cgi?28690 Upstream commit: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=135124 Fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=451068 galtgendo@o2.pl 2008-06-23 19:34:17 0000 Well, today they created following upstream commit: http://gcc.gnu.org/viewcvs?view=rev&revision=137039 How long till it be added to gcc patches ? holger.hoffstaette@googlemail.com 2008-06-23 20:01:06 0000 FWIW simply compiling the pr36533.c test with -Os will exhibit the bug (segfault). If toolchain/kernel teams are busy I'd be glad to volunteer and provide an ebuild patch. holger.hoffstaette@googlemail.com 2008-06-24 08:38:48 0000 Created an attachment (id=158189) Patch for gcc bug #36533 holger.hoffstaette@googlemail.com 2008-06-24 08:39:34 0000 Created an attachment (id=158191) Patch for ebuild holger.hoffstaette@googlemail.com 2008-06-24 08:43:44 0000 The patches will fix gcc to correctly compile the test program from http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36533 with -Os. Other programs still compile & run as well ;) holger.hoffstaette@googlemail.com 2008-06-24 08:46:59 0000 (In reply to comment #5) > The patches will fix gcc to correctly compile the test program from > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36533 with -Os. Forget the above URL - if you need the standalone test use the "upstream commit" mentioned in comment#1. loki_val@gentoo.org 2008-07-09 09:16:54 0000 Closing, fixed in GCC-4.3.1-r1 158189 2008-06-24 08:38 0000 Patch for gcc bug #36533 gcc-4.3.1-emit-rtl-Os.patch text/plain LS0tIGdjYy9lbWl0LXJ0bC5vcmlnLmMJMjAwOC0wNi0yNCAwMjowMDoyMC4wMDAwMDAwMDAgKzAy MDAKKysrIGdjYy9lbWl0LXJ0bC5jCTIwMDgtMDYtMjQgMDI6MDM6MjcuMDAwMDAwMDAwICswMjAw CkBAIC05NjAsNiArOTYwLDEyIEBACiB7CiAgIGludCBvZmZzZXQ7CiAKKyAgLyogSGFyZCByZWdp c3RlcnMgY2FuIGJlIHJldXNlZCBmb3IgbXVsdGlwbGUgcHVycG9zZXMgd2l0aGluIHRoZSBzYW1l CisgICAgIGZ1bmN0aW9uLCBzbyBzZXR0aW5nIFJFR19BVFRSUywgUkVHX1BPSU5URVIgYW5kIFJF R19QT0lOVEVSX0FMSUdOCisgICAgIG9uIHRoZW0gaXMgd3JvbmcuICAqLworICBpZiAoSEFSRF9S RUdJU1RFUl9QIChyZWcpKQorICAgIHJldHVybjsKKwogICBvZmZzZXQgPSBieXRlX2xvd3BhcnRf b2Zmc2V0IChHRVRfTU9ERSAocmVnKSwgR0VUX01PREUgKHgpKTsKICAgaWYgKE1FTV9QICh4KSkK ICAgICB7Cg== 158191 2008-06-24 08:39 0000 Patch for ebuild gcc-4.3.1.patch text/plain LS0tIGdjYy00LjMuMS5lYnVpbGQJMjAwOC0wNi0yMSAwNjozOTozNi4wMDAwMDAwMDAgKzAyMDAK KysrIC91c3IvbG9jYWwvcG9ydGFnZS9zeXMtZGV2ZWwvZ2NjL2djYy00LjMuMS5lYnVpbGQJMjAw OC0wNi0yNCAxMDowMTozMS4wMDAwMDAwMDAgKzAyMDAKQEAgLTYyLDQgKzYyLDYgQEAKIAlbWyAk e0NIT1NUfSA9PSAke0NUQVJHRVR9IF1dICYmIGVwYXRjaCAiJHtGSUxFU0RJUn0iL2djYy1zcGVj LWVudi5wYXRjaAogCiAJW1sgJHtDVEFSR0VUfSA9PSAqLXNvZnRmbG9hdC0qIF1dICYmIGVwYXRj aCAiJHtGSUxFU0RJUn0iLzQuMC4yL2djYy00LjAuMi1zb2Z0ZmxvYXQucGF0Y2gKKworCWVwYXRj aCAiJHtGSUxFU0RJUn0iLzQuMy4xL2djYy00LjMuMS1lbWl0LXJ0bC1Pcy5wYXRjaAogfQo=