https://bugs.kde.org/show_bug.cgi?id=369360
Bug ID: 369360
Summary: Bad sigprocmask old or new sets can crash valgrind
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/rt_sigprocmask/rt_sigprocmask02 crashes valgrind:
==29826== Syscall param rt_sigprocmask(oldset) points to unaddressable byte(s)
==29826== at 0x4F25BF9: syscall (syscall.S:38)
==29826== by 0x402712: main (rt_sigprocmask02.c:107)
==29826== Address 0xffffffffffffffff is not stack'd, malloc'd or (recently)
free'd
==29826==
--29826-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) -
exiting
--29826-- si_code=1; Faulting address: 0xFFFFFFFFFFFFFFFF; sp: 0x80327ad40
valgrind: the 'impossible' happened:
Killed by fatal signal
host stacktrace:
==29826== at 0x380534BD: do_setmask (m_signals.c:1352)
==29826== by 0x380534BD: vgPlain_do_sys_sigprocmask (m_signals.c:1375)
==29826== by 0x380AF5F1: vgSysWrap_linux_sys_rt_sigprocmask_before
(syswrap-linux.c:3414)
==29826== by 0x38092CDF: vgPlain_client_syscall (syswrap-main.c:1906)
==29826== by 0x3808F8B2: handle_syscall (scheduler.c:1118)
==29826== by 0x38090E76: vgPlain_scheduler (scheduler.c:1435)
==29826== by 0x380A027A: thread_wrapper (syswrap-linux.c:103)
==29826== by 0x380A027A: run_a_thread_NORETURN (syswrap-linux.c:156)
Reproducible: Always
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