diff options
| author | Alexander Bluhm <bluhm@cvs.openbsd.org> | 2019-09-09 20:02:28 +0000 |
|---|---|---|
| committer | Alexander Bluhm <bluhm@cvs.openbsd.org> | 2019-09-09 20:02:28 +0000 |
| commit | a0258cfaca2842e071c42088e9041699bd79b414 (patch) | |
| tree | df4abf3faddad02913ffaa864146f6e74a231cfa /sys/uvm | |
| parent | 59e994ee8a1a1edcf89e9aa49e2dd4586bda90b7 (diff) | |
Inform about system call memory write protection and stack mapping
violations in system accounting. This will help to find missbehaving
programs and possible attacks. The flags bit field is full, so
recycle the PDP-11 compatibility on VAX. lastcomm(1) prints the
AMAP flag as 'M'. daily(8) prints a list of affected processes.
OK deraadt@
Diffstat (limited to 'sys/uvm')
| -rw-r--r-- | sys/uvm/uvm_map.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/uvm/uvm_map.c b/sys/uvm/uvm_map.c index bd072c50fb0..dc4199743b6 100644 --- a/sys/uvm/uvm_map.c +++ b/sys/uvm/uvm_map.c @@ -1,4 +1,4 @@ -/* $OpenBSD: uvm_map.c,v 1.246 2019/06/14 05:52:43 deraadt Exp $ */ +/* $OpenBSD: uvm_map.c,v 1.247 2019/09/09 20:02:26 bluhm Exp $ */ /* $NetBSD: uvm_map.c,v 1.86 2000/11/27 08:40:03 chs Exp $ */ /* @@ -86,6 +86,7 @@ #include <sys/param.h> #include <sys/systm.h> +#include <sys/acct.h> #include <sys/mman.h> #include <sys/proc.h> #include <sys/malloc.h> @@ -1872,6 +1873,7 @@ uvm_map_inentry(struct proc *p, struct p_inentry *ie, vaddr_t addr, if (!ok) { printf(fmt, p->p_p->ps_comm, p->p_p->ps_pid, p->p_tid, addr, ie->ie_start, ie->ie_end); + p->p_p->ps_acflag |= AMAP; sv.sival_ptr = (void *)PROC_PC(p); trapsignal(p, SIGSEGV, 0, SEGV_ACCERR, sv); } |