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9246b3090c
freebsd-skq/sys
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Mark Johnston 9246b3090c fork: Suspend other threads if both RFPROC and RFMEM are not set 
Otherwise, a multithreaded parent process may trigger races in
vm_forkproc() if one thread calls rfork() with RFMEM set and another
calls rfork() without RFMEM.

Also simplify vm_forkproc() a bit, vmspace_unshare() already checks to
see if the address space is shared.

Reported by:	syzbot+0aa7c2bec74c4066c36f@syzkaller.appspotmail.com
Reported by:	syzbot+ea84cb06937afeae609d@syzkaller.appspotmail.com
Reviewed by:	kib
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D30220
2021-05-13 08:33:23 -04:00
..
amd64 linux(4): make arch_prctl(2) support GET_CET_STATUS, report unknown codes 2021-05-06 09:33:42 +01:00
arm rpi_ft5406: Recognize raspberrypi,firmware-ts touchscreen 2021-05-09 12:13:19 +02:00
arm64 Add LS1028A clockgen driver 2021-05-07 03:48:53 +02:00
bsm
cam cam: Add doxygen docs to cam_sim_alloc 2021-05-05 11:44:39 -06:00
cddl fbt: Remove some handling for multiple CTF containers 2021-04-02 17:49:13 -04:00
compat Implement cdev_device_add() and cdev_device_del() in the LinuxKPI. 2021-05-11 21:00:23 +02:00
conf Add LS1028A clockgen driver 2021-05-07 03:48:53 +02:00
contrib zfs: restore copyright disclaimer change from 4b84b4cca 2021-04-26 22:16:50 +02:00
crypto ossl: Don't encryt/decrypt too much data for chacha20. 2021-04-01 15:49:07 -07:00
ddb fix style nit: space after if 2021-05-05 15:26:09 -06:00
dev xen/blkback: fix reconnection of backend 2021-05-11 15:43:42 +02:00
dts dts: Bump the freebsd branding version to 5.10 2021-03-23 15:02:21 +01:00
fs nfscl: Delete unneeded redundant MODULE_DEPEND() calls 2021-05-10 17:34:29 -07:00
gdb gdb: report specific stop reason for watchpoints 2021-03-30 11:36:41 -03:00
geom gmultipath: make physpath distinct from the underlying providers' 2021-05-06 12:32:27 -06:00
gnu
i386 Create VM_MEMATTR_DEVICE on all architectures 2021-04-12 06:15:31 +00:00
isa Remove more remnants of sio(4) 2021-04-07 14:33:02 -04:00
kern fork: Suspend other threads if both RFPROC and RFMEM are not set 2021-05-13 08:33:23 -04:00
kgssapi opencrypto: Introduce crypto_dispatch_async() 2021-02-08 09:19:19 -05:00
libkern Use '.arch_extension crc' in the arm64 crc32 code 2021-05-06 07:42:35 +00:00
mips OCF: Remove support for asymmetric cryptographic operations. 2021-04-12 14:28:43 -07:00
modules Introduce DXR as an IPv4 longest prefix matching / FIB module 2021-05-05 13:45:52 +02:00
net if: Remove unnecessary validation in the SIOCSIFNAME handler 2021-05-12 12:52:06 -04:00
net80211 net80211: prefix get_random_bytes() with net80211_ 2021-03-24 22:16:09 +00:00
netgraph netgraph/ng_bridge: learn MACs via control message 2021-05-04 22:14:59 +02:00
netinet tcp: Incorrect KASSERT causes a panic in rack 2021-05-13 07:36:04 -04:00
netinet6 Fix mbuf leaks in various pru_send implementations 2021-05-12 13:00:09 -04:00
netipsec Add missing sockaddr length and family validation to various protocols 2021-05-03 13:35:19 -04:00
netpfil pf: Support killing 'matching' states 2021-05-07 22:13:31 +02:00
netsmb
nfs Fix panic when using BOOTP to resolve root path. 2021-03-28 14:02:40 -05:00
nfsclient nfs: Cleanup dead files 2021-03-17 06:16:31 +11:00
nfsserver nfs: Cleanup dead files 2021-03-17 06:16:31 +11:00
nlm
ofed Add missing sockaddr length and family validation to various protocols 2021-05-03 13:35:19 -04:00
opencrypto cryptodev: Fix some input validation bugs 2021-05-11 17:36:12 -04:00
powerpc powerpc/radix pmap: Convert stat counters from ulongs to counters 2021-05-10 21:26:14 -05:00
riscv riscv: Remove old qemu compatibility code 2021-04-27 16:22:04 -05:00
rpc nfsd: fix a NFSv4.1 Linux client mount stuck in CLOSE_WAIT 2021-04-27 15:32:35 -07:00
security tcp_input/syncache: acquire only read lock on PCB for SYN,!ACK packets 2021-04-12 08:25:31 -07:00
sys openat(2): add O_EMPTY_PATH 2021-05-11 02:39:24 +03:00
teken
tests Revise FIB lookups per second benchmarking routines. 2021-05-05 12:28:17 +02:00
tools newbus: remove support for SINGLETON 2021-04-26 11:41:08 -06:00
ufs b_vflags update requries bufobj lock 2021-04-15 15:47:42 +03:00
vm fork: Suspend other threads if both RFPROC and RFMEM are not set 2021-05-13 08:33:23 -04:00
x86 stack(9): Disable KASAN in stack_capture() 2021-05-07 14:31:08 -04:00
xdr
xen xen: move x86-specific xen_vector_callback_enabled to sys/x86 2021-03-15 14:20:21 +01:00
Makefile