https://bugs.kde.org/show_bug.cgi?id=385477
Bug ID: 385477
Summary: AMD64, sqlite3 - Unrecognised instruction: bextr
Product: valgrind
Version: unspecified
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: major
Priority: NOR
Component: vex
Assignee: jsew...@acm.org
Reporter: nuquaquara...@gmail.com
Target Milestone: ---
Valgrind aborts with the following error message:
==13490==
vex amd64->IR: unhandled instruction bytes: 0x8F 0xE9 0xF8 0x97 0x5 0x6D 0x4E
0xD 0x0 0xC5
vex amd64->IR: REX=0 REX.W=0 REX.R=0 REX.X=0 REX.B=0
vex amd64->IR: VEX=0 VEX.L=0 VEX.nVVVV=0x0 ESC=NONE
vex amd64->IR: PFX.66=0 PFX.F2=0 PFX.F3=0
==6034== valgrind: Unrecognised instruction at address 0x1a75fa.
==6034== at 0x1A75FA: unixOpen (sqlite3.c:36160)
==6034== by 0x1BE20E: sqlite3OsOpen (sqlite3.c:20823)
==6034== by 0x1BE20E: sqlite3PagerOpen (sqlite3.c:52236)
==6034== by 0x1BE20E: sqlite3BtreeOpen (sqlite3.c:61903)
==6034== by 0x1D6374: openDatabase (sqlite3.c:144562)
According to objdump, that area corresponds to:
9f5fa: 8f ea f8 10 c9 03 1d bextr $0x1d03,%rcx,%rcx
9f601: 00 00
9f603: f3 48 ab rep stos %rax,%es:(%rdi)
The source code is sqlite3.c, v.3.20.1, "amalgamated" (
https://www.sqlite.org/download.html)
Compiled with:
gcc -c -DNDEBUG -g -fno-omit-frame-pointer -Wall -O3 -march=native
-mtune=native -fno-stack-protector ../third-party/sqlite3/sqlite3.c -o
objects/third-party/sqlite3/sqlite3.o
Platform: AMD FX-8350 on ArchLinux 64-bit, gcc 7.2, same problem with clang 5.0
Tip of valgrind, from git, at 856d45eb7e3661a61ace32be2cfa10bf198620c8, but the
problem is also present in at least v3.13.
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