https://bugs.kde.org/show_bug.cgi?id=369441
Bug ID: 369441
Summary: bad lvec argument crashes process_vm_readv/writev
syscall wrappers
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/cma/process_vm01 crashes valgrind:
==3940== Syscall param process_vm_readv(lvec) points to unaddressable byte(s)
==3940== at 0x4129977: syscall (in /usr/lib/libc-2.23.so)
==3940== by 0x804A414: test_process_vm_readv (process_vm.h:42)
==3940== by 0x804A414: cma_test_params_read (process_vm01.c:137)
==3940== by 0x8049E33: cma_test_iov_invalid (process_vm01.c:294)
==3940== by 0x8049E33: cma_test_errnos (process_vm01.c:410)
==3940== by 0x8049E33: main (process_vm01.c:91)
==3940== Address 0xffffffff is not stack'd, malloc'd or (recently) free'd
==3940==
--3940-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) -
exit
ing
--3940-- si_code=1; Faulting address: 0x3; sp: 0x628dde4c
valgrind: the 'impossible' happened:
Killed by fatal signal
host stacktrace:
==3940== at 0x380A3E79: vgSysWrap_linux_sys_process_vm_readv_before
(syswrap-linux.c:5012)
==3961== Syscall param process_vm_writev(lvec) points to unaddressable byte(s)
==3961== at 0x4129977: syscall (in /usr/lib/libc-2.23.so)
==3961== by 0x804A3C4: test_process_vm_writev (process_vm.h:55)
==3961== by 0x804A3C4: cma_test_params_write (process_vm01.c:145)
==3961== by 0x8049E33: cma_test_iov_invalid (process_vm01.c:294)
==3961== by 0x8049E33: cma_test_errnos (process_vm01.c:410)
==3961== by 0x8049E33: main (process_vm01.c:91)
==3961== Address 0xffffffff is not stack'd, malloc'd or (recently) free'd
==3961==
--3961-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) -
exit
ing
--3961-- si_code=1; Faulting address: 0x3; sp: 0x629a8e4c
valgrind: the 'impossible' happened:
Killed by fatal signal
host stacktrace:
==3961== at 0x380A40F9: vgSysWrap_linux_sys_process_vm_writev_before
(syswrap-linux.c:5050)
Reproducible: Always
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