[Bug gas/27419] New: x86-64: regression: gas accepts invalid code (movdir64b / enqcmd)
https://sourceware.org/bugzilla/show_bug.cgi?id=27419 Bug ID: 27419 Summary: x86-64: regression: gas accepts invalid code (movdir64b / enqcmd) Product: binutils Version: 2.36.1 Status: UNCONFIRMED Severity: normal Priority: P2 Component: gas Assignee: unassigned at sourceware dot org Reporter: jbeulich at suse dot com Target Milestone: --- As a supposed fix (really at best: workaround, bug gas/26685) for a gcc shortcoming, symbol(%rip) style operands got special cased when present for these insns. This leads to gas accepting e.g. movdir64b foo(%rip),%ecx despite being invalid. The two operands are really ambiguous, and hence shouldn't be accepted silently: Besides the gcc issue (which ought to be addressed there instead of worked around in gas), the programmer (of plain assembly sources or inline asm()) may have meant either movdir64b foo(%eip),%ecx or movdir64b foo(%rip),%rcx To make the workaround remotely acceptable, it should imo at least be restricted to the --x32 case. Even there it would better be warned about, perhaps unless -q was specified. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27424] New: GCC 11 and binutils 2.36 failed to create a working Linux kernel
https://sourceware.org/bugzilla/show_bug.cgi?id=27424 Bug ID: 27424 Summary: GCC 11 and binutils 2.36 failed to create a working Linux kernel Product: binutils Version: 2.36 Status: NEW Severity: normal Priority: P2 Component: ld Assignee: unassigned at sourceware dot org Reporter: hjl.tools at gmail dot com CC: slyfox at inbox dot ru Target Milestone: --- GCC 11.0.0 20210213 and binutils 2.36 failed to create a working Linux kernel 5.10.16: [3.839976] BUG: unable to handle page fault for address: c0256350 [3.840546] #PF: supervisor write access in kernel mode [3.841118] #PF: error_code(0x0003) - permissions violation [3.841675] PGD 172a15067 P4D 172a15067 PUD 172a17067 PMD 108a39067 PTE 800108a05021 [3.842254] Oops: 0003 [#1] SMP PTI [3.842819] CPU: 3 PID: 523 Comm: systemd-udevd Not tainted 5.10.16+ #130 [3.843390] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-1.fc33 04/01/2014 [3.843946] RIP: 0010:register_trace_event+0xe5/0x240 [3.844612] Code: 31 e4 eb 7f 4c 8b 65 08 48 89 ea 4c 89 ef 4c 89 e6 e8 3f 08 43 00 84 c0 0f 84 1f 01 00 00 4c 89 6d 08 48 89 6b 10 4c 89 63 18 <4d> 89 2c 24 48 8b 53 28 48 83 3a 00 0f 84 8d 00 00 00 48 83 7a 08 [3.845940] RSP: :ab6c804f3c88 EFLAGS: 00010202 [3.846584] RAX: 0001 RBX: c049f260 RCX: [3.847241] RDX: c0256350 RSI: c0256350 RDI: c049f270 [3.847928] RBP: bdba4d40 R08: bdba4d40 R09: bdba4d40 [3.848372] Adding 4070396k swap on /dev/zram0. Priority:100 extents:1 across:4070396k SSFS [3.848578] R10: 985540069e60 R11: R12: c0256350 [3.848580] R13: c049f270 R14: bdb8f2a0 R15: 0002 [3.851411] FS: 7f7445976380() GS:9856b7d8() knlGS: [3.852165] CS: 0010 DS: ES: CR0: 80050033 [3.852934] CR2: c0256350 CR3: 0001027a0006 CR4: 00370ee0 [3.853974] Call Trace: [3.854803] trace_event_raw_init+0x9/0x20 [3.855584] event_init+0x2d/0x70 [3.856271] trace_module_notify+0x127/0x250 [3.857026] blocking_notifier_call_chain_robust+0x64/0xd0 [3.857690] ? mutex_lock+0xe/0x30 [3.858373] load_module+0x22ab/0x26b0 [3.859063] ? __do_sys_finit_module+0x98/0xe0 [3.859695] __do_sys_finit_module+0x98/0xe0 [3.860367] do_syscall_64+0x33/0x80 [3.861030] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [3.861639] RIP: 0033:0x7f74468f704d [3.862275] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fb 7d 0c 00 f7 d8 64 89 01 48 [3.863561] RSP: 002b:7ffcf3f0c1b8 EFLAGS: 0246 ORIG_RAX: 0139 [3.864230] RAX: ffda RBX: 5605c6614d90 RCX: 7f74468f704d [3.864898] RDX: RSI: 7f7446a3435a RDI: 0014 [3.865508] RBP: 0002 R08: R09: 7f7446a485b6 [3.866149] R10: 0014 R11: 0246 R12: 7f7446a3435a [3.866743] R13: 5605c6615a80 R14: R15: 5605c673ea40 [3.867367] Modules linked in: intel_cstate(-) snd_hda_core(+) intel_uncore(-) irqbypass ac97_bus snd_hwdep rapl snd_seq snd_seq_device snd_pcm snd_timer snd i2c_i801 pcspkr i2c_smbus joydev soundcore lpc_ich virtio_balloon zram ip_tables crct10dif_pclmul crc32_pclmul crc32c_intel qxl drm_ttm_helper ttm ghash_clmulni_intel serio_raw drm_kms_helper virtio_console virtio_blk virtio_net net_failover failover cec qemu_fw_cfg drm fuse [3.869976] CR2: c0256350 [3.870602] ---[ end trace 755bc7589d6418ce ]--- [3.871258] RIP: 0010:register_trace_event+0xe5/0x240 [3.871877] Code: 31 e4 eb 7f 4c 8b 65 08 48 89 ea 4c 89 ef 4c 89 e6 e8 3f 08 43 00 84 c0 0f 84 1f 01 00 00 4c 89 6d 08 48 89 6b 10 4c 89 63 18 <4d> 89 2c 24 48 8b 53 28 48 83 3a 00 0f 84 8d 00 00 00 48 83 7a 08 [3.873145] RSP: :ab6c804f3c88 EFLAGS: 00010202 [3.873781] RAX: 0001 RBX: c049f260 RCX: [3.874425] RDX: c0256350 RSI: c0256350 RDI: c049f270 [3.875050] RBP: bdba4d40 R08: bdba4d40 R09: bdba4d40 [3.875679] R10: 985540069e60 R11: R12: c0256350 [3.876301] R13: c049f270 R14: bdb8f2a0 R15: 0002 [3.876913] FS: 7f7445976380() GS:9856b7d8() knlGS: [3.877516] CS: 0010 DS: ES: CR0: 80050033 [3.878128] CR2: c0256350 CR3: 0001027a0006 CR4: 00370ee0 Binutils 2.35 works fine. -- You are receiving this mail because: You are on the CC lis
[Bug ld/27424] GCC 11 and binutils 2.36 failed to create a working Linux kernel
https://sourceware.org/bugzilla/show_bug.cgi?id=27424 --- Comment #1 from H.J. Lu --- Binutils 2.36 generates thousands of ld: warning: orphan section `.data.event_initcall_finish' from `init/main.o' bei ng placed in section `.data.event_initcall_finish' ld: warning: orphan section `.data.event_initcall_start' from `init/main.o' bein g placed in section `.data.event_initcall_start' ld: warning: orphan section `.data.event_initcall_level' from `init/main.o' bein g placed in section `.data.event_initcall_level' -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27424] GCC 11 and binutils 2.36 failed to create a working Linux kernel
https://sourceware.org/bugzilla/show_bug.cgi?id=27424 H.J. Lu changed: What|Removed |Added Resolution|--- |MOVED See Also||https://gcc.gnu.org/bugzill ||a/show_bug.cgi?id=99113 Status|NEW |RESOLVED --- Comment #2 from H.J. Lu --- See: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99113 -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27425] New: erroneous __ImageBase relocation using Microsoft COFF .OBJ linked to .ELF x86_64
https://sourceware.org/bugzilla/show_bug.cgi?id=27425 Bug ID: 27425 Summary: erroneous __ImageBase relocation using Microsoft COFF .OBJ linked to .ELF x86_64 Product: binutils Version: 2.36 Status: UNCONFIRMED Severity: normal Priority: P2 Component: ld Assignee: unassigned at sourceware dot org Reporter: minnowware at hotmail dot com Target Milestone: --- Hi H.J. there are two (2) more bugs related closely to https://sourceware.org/bugzilla/show_bug.cgi?id=26583 and https://sourceware.org/bugzilla/show_bug.cgi?id=27171. Microsoft COFF x86-64 introduces the "__ImageBase" relative addressing method. In the .OBJ file a new relocation type is used: IMAGE_REL_AMD64_ADDR32NB. Please find my comprehensive description here: https://github.com/KilianKegel/GNU-ld-for-MicrosoftCOFF-to-LinuxELF#__imagebase-bugs This is mishandled in 2 ways 1a. the 32Bit field ADDR32NB is a DISPLACEMENT only field, but initialized by GNU ld with data offset + 64Bit __executable_start address 1b. the base address address register involved in this addressing scheme is initialized to ZERO instead to __executable_start / __ImageBase https://github.com/KilianKegel/GNU-ld-for-MicrosoftCOFF-to-LinuxELF#addr32nb-initialization-w-__imagebase 2. the symbol addresses taken for __ImageBase addressing scheme are wrong. EIP relative addresses taken from the same section instead are correct. https://github.com/KilianKegel/GNU-ld-for-MicrosoftCOFF-to-LinuxELF#addr32nb-offset-miscalculation I would really appreciate if you could fix this issue. Best regards, Kilian -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27425] erroneous __ImageBase relocation using Microsoft COFF .OBJ linked to .ELF x86_64
https://sourceware.org/bugzilla/show_bug.cgi?id=27425 Kilian Kegel changed: What|Removed |Added URL||https://github.com/KilianKe ||gel/GNU-ld-for-MicrosoftCOF ||F-to-LinuxELF#__imagebase-b ||ugs -- You are receiving this mail because: You are on the CC list for the bug.
[Bug gas/27412] Suspicious "setting incorrect section attributes for .note.Linux" warnings on linux kernel
https://sourceware.org/bugzilla/show_bug.cgi?id=27412 H.J. Lu changed: What|Removed |Added Version|unspecified |2.36.1 -- You are receiving this mail because: You are on the CC list for the bug.
[Bug gas/27426] New: More bugs in dwarf2dbg.c
https://sourceware.org/bugzilla/show_bug.cgi?id=27426 Bug ID: 27426 Summary: More bugs in dwarf2dbg.c Product: binutils Version: 2.37 (HEAD) Status: UNCONFIRMED Severity: normal Priority: P2 Component: gas Assignee: unassigned at sourceware dot org Reporter: sirus.shahini at gmail dot com Target Milestone: --- Created attachment 13226 --> https://sourceware.org/bugzilla/attachment.cgi?id=13226&action=edit Sample input Hello, Recently I reported a bug (id: 27355) and you issued a patch to fix it. Testing your new version, our fuzzer could mutate an input to trigger a similar crash in the same file. I didn't look into the bug in depth but it should be related to the previous one. A crashing input has been attached. To reproduce: as -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27425] erroneous __ImageBase relocation using Microsoft COFF .OBJ linked to .ELF x86_64
https://sourceware.org/bugzilla/show_bug.cgi?id=27425 H.J. Lu changed: What|Removed |Added Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Last reconfirmed||2021-02-16 Assignee|unassigned at sourceware dot org |hjl.tools at gmail dot com --- Comment #1 from H.J. Lu --- Created attachment 13227 --> https://sourceware.org/bugzilla/attachment.cgi?id=13227&action=edit A patch Try this. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27425] erroneous __ImageBase relocation using Microsoft COFF .OBJ linked to .ELF x86_64
https://sourceware.org/bugzilla/show_bug.cgi?id=27425 H.J. Lu changed: What|Removed |Added CC||hjl.tools at gmail dot com -- You are receiving this mail because: You are on the CC list for the bug.
[Bug gas/27426] More bugs in dwarf2dbg.c
https://sourceware.org/bugzilla/show_bug.cgi?id=27426 Alan Modra changed: What|Removed |Added Assignee|unassigned at sourceware dot org |amodra at gmail dot com Status|UNCONFIRMED |ASSIGNED Ever confirmed|0 |1 Last reconfirmed||2021-02-16 -- You are receiving this mail because: You are on the CC list for the bug.
