https://bugs.kde.org/show_bug.cgi?id=369383
Bug ID: 369383 Summary: x86 sys_modify_ldt wrapper crashes on bad ptr Product: valgrind Version: 3.12 SVN Platform: Other OS: Linux Status: UNCONFIRMED Severity: normal Priority: NOR Component: general Assignee: jsew...@acm.org Reporter: m...@redhat.com LTP testcases/kernel/syscalls/modify_ldt/modify_ldt01: ==30317== Syscall param modify_ldt(ptr) points to unaddressable byte(s) ==30317== at 0x412FFF9: modify_ldt (in /usr/lib/libc-2.23.so) ==30317== by 0x8049BCD: main (modify_ldt01.c:188) ==30317== Address 0x805efff is 4095 bytes after the brk data segment limit 0x805e000 ==30317== --30317-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) - exiting --30317-- si_code=1; Faulting address: 0x805F000; sp: 0x62a5ce34 valgrind: the 'impossible' happened: Killed by fatal signal host stacktrace: ==30317== at 0x380B70B7: read_ldt (syswrap-x86-linux.c:541) ==30317== by 0x380B70B7: sys_modify_ldt (syswrap-x86-linux.c:603) ==30317== by 0x380B70B7: vgSysWrap_x86_linux_sys_modify_ldt_before (syswrap-x86-linux.c:1037) Reproducible: Always -- You are receiving this mail because: You are watching all bug changes.