Peter Wemm 88d1b64235 Fix a nasty bug that causes random crashes and lockups particularly on ... very busy servers (eg: news, web). This is an interaction between embryonic processes that have not yet finished forking, and happen to cause the kernel VM space to grow, hitting the uninitialised variable. It was possible for this to strike at any time, depending on the size of your kernel and load patterns. One machine had paniced occasionally when cron launches a job since before the 2.1 release. If you had "options DIAGNOSTIC", you may have seen references to bogus addresses like 0xdeadc142 and the like. This is a minimal change to fix the problem, it will probably be done better by reordering p_vmspace to be in the startzero section, but it becomes harder to validate then. It's been vulnerable since pmap.c rev 1.40 (Jan 9, 1995), so it's been a cause of problems since well before 2.0.5. This was when the merged VM/buffer cache and the dynamic growing kernel VM space were first committed. This probably fixes a few of PR's.		1996-05-02 11:38:05 +00:00
..
imgact_aout.c	First pass at cleaning up macros relating to pages, clusters and all that.	1996-05-02 10:43:17 +00:00
imgact_elf.c	Removed unnecessary #includes from <sys/imgact.h> so that it is	1996-05-01 02:43:13 +00:00
imgact_gzip.c	First pass at cleaning up macros relating to pages, clusters and all that.	1996-05-02 10:43:17 +00:00
imgact_shell.c	Killed sections 3 and 4 of my copyright as I don't agree with it (I believe	1996-04-08 01:22:00 +00:00
inflate.c
init_main.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
init_sysent.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
init_sysvec.c	Mega-commit for Linux emulator update.. This has been stress tested under	1996-03-02 19:38:20 +00:00
kern_acct.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
kern_clock.c
kern_conf.c
kern_descrip.c	Fixed the unit numbers of the devfs `fd' devices.	1996-03-27 19:19:58 +00:00
kern_devconf.c
kern_exec.c	Removed unnecessary #includes from <sys/imgact.h> so that it is	1996-05-01 02:43:13 +00:00
kern_exit.c	Spell cpu_switch() with an i in a comment.	1996-04-11 20:56:29 +00:00
kern_fork.c	Fix a nasty bug that causes random crashes and lockups particularly on	1996-05-02 11:38:05 +00:00
kern_ktrace.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
kern_lkm.c	Removed unnecessary #includes from <sys/imgact.h> so that it is	1996-05-01 02:43:13 +00:00
kern_lockf.c
kern_malloc.c	First pass at cleaning up macros relating to pages, clusters and all that.	1996-05-02 10:43:17 +00:00
kern_mib.c	Move the "mib" variables out to their own file.	1996-04-07 13:03:06 +00:00
kern_ntptime.c
kern_physio.c
kern_proc.c	Declared pgrpdump() properly.	1996-04-07 16:16:05 +00:00
kern_prot.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
kern_random.c	Use rdtsc() function instead of inline essembler.	1996-04-07 18:16:26 +00:00
kern_resource.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
kern_sig.c	Removed unnecessary #includes from <sys/imgact.h> so that it is	1996-05-01 02:43:13 +00:00
kern_subr.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
kern_synch.c	Don't generate code for the unused function sleep().	1996-04-07 13:35:58 +00:00
kern_sysctl.c	Fix a longstanding bug and a buglet of no significance.	1996-04-13 13:28:54 +00:00
kern_tc.c
kern_time.c	Removed never-used #includes of <machine/cpu.h>. Many were apparently	1996-04-07 17:39:28 +00:00
kern_timeout.c
kern_xxx.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
Make.tags.inc	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
Makefile	Remove bogus architectures to allow make tags to work.	1996-03-31 18:53:43 +00:00
makesyscalls.sh	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
md5c.c
subr_autoconf.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
subr_clist.c	Killed sections 3 and 4 of my copyright as I don't agree with it (I believe	1996-04-08 01:22:00 +00:00
subr_disklabel.c	Yet more b_flags fixes. The previous ones broke the clearing of B_DONE	1996-04-19 19:34:19 +00:00
subr_diskmbr.c	Removed now-unused #includes of <machine/cpu.h>. They were for bootverbose	1996-04-07 17:32:42 +00:00
subr_diskslice.c	Fixed removal of devfs entries for the real slice corresponding to the	1996-04-19 19:22:29 +00:00
subr_dkbad.c	Fix a bug that b_flags was getting unnecessarily modified by	1996-03-01 19:01:04 +00:00
subr_log.c	Fixed name of /dev/fs/klog (it's not "log").	1996-03-27 19:45:28 +00:00
subr_param.c	First pass at cleaning up macros relating to pages, clusters and all that.	1996-05-02 10:43:17 +00:00
subr_prf.c	KGDB is dead. It may come back one day if somebody does it.	1996-05-02 09:34:51 +00:00
subr_prof.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
subr_rlist.c	In order to fix some concurrency problems with the swap pager early	1996-03-03 21:11:08 +00:00
subr_trap.c	Remove a now unnecessary prototype from pmap.c. Also remove now	1996-03-28 05:40:58 +00:00
subr_xxx.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
sys_generic.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
sys_pipe.c	Various pipe error return fixes, and a significant typeo fix. From	1996-03-25 01:48:28 +00:00
sys_process.c	Because of the way that ptrace() now calls procfs routines to read/write	1996-03-30 15:02:58 +00:00
sys_socket.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
syscalls.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
syscalls.master	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
sysv_ipc.c
sysv_msg.c
sysv_sem.c
sysv_shm.c
tty_compat.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
tty_conf.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
tty_cons.c	Removed unused #include.	1996-05-01 03:32:46 +00:00
tty_pty.c	Fixed the PF_REMOTE case of ptcwrite(). I broke it in rev.1.22. Output	1996-04-11 18:43:37 +00:00
tty_snoop.c	Switched from using devfs_add_devsw() to devfs_add_devswf()	1996-03-28 14:31:42 +00:00
tty_subr.c	Killed sections 3 and 4 of my copyright as I don't agree with it (I believe	1996-04-08 01:22:00 +00:00
tty_tb.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
tty_tty.c	Switched from using devfs_add_devsw() to devfs_add_devswf()	1996-03-28 14:31:42 +00:00
tty.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
uipc_domain.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
uipc_mbuf.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
uipc_proto.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
uipc_sockbuf.c	Changed socket code to use 4.4BSD queue macros. This includes removing	1996-03-11 15:37:44 +00:00
uipc_socket2.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
uipc_socket.c	Fix for PR #1146: the "next" pointer must be cached before calling soabort	1996-04-16 03:50:08 +00:00
uipc_syscalls.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
uipc_usrreq.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_bio.c	Correct handling of dirty pages in I/O buffers. The case where pages	1996-03-09 06:46:51 +00:00
vfs_cache.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_cluster.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_conf.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_export.c	Put the "free vnode isn't" check back in the right place.	1996-03-09 06:43:19 +00:00
vfs_extattr.c
vfs_init.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_lookup.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_mount.c
vfs_subr.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_syscalls.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_vnops.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vnode_if.pl
vnode_if.sh	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vnode_if.src	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00