https://bugs.kde.org/show_bug.cgi?id=369361
Bug ID: 369361
Summary: vmsplice syscall wrapper crashes on bad iovec
Product: valgrind
Version: unspecified
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: m...@redhat.com
LTP testcases/kernel/syscalls/vmsplice/vmsplice02 crashes valgrind:
==32085== Syscall param vmsplice(iov) points to unaddressable byte(s)
==32085== at 0x4F2C173: __vmsplice_nocancel (syscall-template.S:81)
==32085== by 0x4028BC: vmsplice_verify (vmsplice02.c:119)
==32085== by 0x4028BC: main (vmsplice02.c:83)
==32085== Address 0x615000 is not stack'd, malloc'd or (recently) free'd
==32085==
==32085== Syscall param vmsplice(iov[...]) points to unaddressable byte(s)
==32085== at 0x4F2C173: __vmsplice_nocancel (syscall-template.S:81)
==32085== by 0x4028BC: vmsplice_verify (vmsplice02.c:119)
==32085== by 0x4028BC: main (vmsplice02.c:83)
==32085== Address 0x800000007 is not stack'd, malloc'd or (recently) free'd
==32085==
--32085-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) -
exiting
--32085-- si_code=1; Faulting address: 0x615000; sp: 0x80327ad70
valgrind: the 'impossible' happened:
Killed by fatal signal
host stacktrace:
==32085== at 0x380B71DC: vgSysWrap_linux_sys_vmsplice_before
(syswrap-linux.c:5301)
==32085== by 0x38092CDF: vgPlain_client_syscall (syswrap-main.c:1906)
==32085== by 0x3808F8B2: handle_syscall (scheduler.c:1118)
==32085== by 0x38090E76: vgPlain_scheduler (scheduler.c:1435)
==32085== by 0x380A027A: thread_wrapper (syswrap-linux.c:103)
==32085== by 0x380A027A: run_a_thread_NORETURN (syswrap-linux.c:156)
Reproducible: Always
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