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206f09eb46
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Konstantin Belousov 206f09eb46 Do not qualify the mcontext_t *mcp argument for set_mcontext(9) as 
const.  On x86, even after the machine context is supposedly read into
the struct ucontext, lazy FPU state save code might only mark the FPU
data as hardware-owned.  Later, set_fpcontext() needs to fetch the
state from hardware, modifying the *mcp.

The set_mcontext(9) is called from sigreturn(2) and setcontext(2)
implementations and old create_thread(2) interface, which throw the
*mcp out after the set_mcontext() call.

Reported by:	dim
Discussed with:	jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-01-31 21:43:46 +00:00
..
amd64 Do not qualify the mcontext_t *mcp argument for set_mcontext(9) as 2015-01-31 21:43:46 +00:00
arm Do not qualify the mcontext_t *mcp argument for set_mcontext(9) as 2015-01-31 21:43:46 +00:00
boot Relocate kernel to high address space (a static + 64 MB for now) to avoid 2015-01-31 19:42:08 +00:00
bsm
cam Add kobj interface between ICL and the rest of the iSCSI stack. 2015-01-31 07:49:50 +00:00
cddl Don't attempt to disable enabled fasttrap probes in an exiting process. 2015-01-30 05:03:23 +00:00
compat Run make sysent. 2015-01-23 21:08:24 +00:00
conf Build the powerpc64 kernel as a position-independent executable. At startup, 2015-01-31 19:16:51 +00:00
contrib Add missing linuxapi module dependencies and always use the FreeBSD 2015-01-19 21:53:00 +00:00
crypto Add some new modes to OpenCrypto. These modes are AES-ICM (can be used 2014-12-12 19:56:36 +00:00
ddb ddb: ANSI-fy function declarations. 2014-10-12 18:01:52 +00:00
dev Implement GPIO_GET_BUS() method for all GPIO drivers. 2015-01-31 19:32:14 +00:00
fs Update directory times immediately after an entry is created or 2015-01-31 21:31:53 +00:00
gdb Add support for gdb's memory searching capabilities to our in-kernel gdb 2014-09-05 16:40:47 +00:00
geom Add devd(8) notifications for creation and destruction of GEOM devices. 2015-01-14 11:15:57 +00:00
gnu reiserfs: Use signed i_nlink 2014-09-25 19:10:32 +00:00
i386 Do not qualify the mcontext_t *mcp argument for set_mcontext(9) as 2015-01-31 21:43:46 +00:00
isa
kern The dependency chain for priority-inheritance mutexes could be 2015-01-31 12:27:40 +00:00
kgssapi Avoid dynamic syscall overhead for statically compiled modules. 2014-10-26 19:42:44 +00:00
libkern Similar to r277901, fix more -Wcast-qual warnings in libkern's strtoq(), 2015-01-29 21:54:01 +00:00
mips Do not qualify the mcontext_t *mcp argument for set_mcontext(9) as 2015-01-31 21:43:46 +00:00
modules Add kobj interface between ICL and the rest of the iSCSI stack. 2015-01-31 07:49:50 +00:00
net Improve the distribution of LAGG port traffic. 2015-01-23 00:06:35 +00:00
net80211 Switch around the order of static inline to be in line with how it's 2015-01-11 18:43:45 +00:00
netgraph Fix a bunch of -Wcast-qual warnings in netgraph's ng_parse.c, by using 2015-01-30 21:59:53 +00:00
netinet Make syncookie_mac() use 'tcp_seq irs' in computing hash. 2015-01-30 17:29:07 +00:00
netinet6 Refactor / restructure the RSS code into generic, IPv4 and IPv6 specific 2015-01-18 18:06:40 +00:00
netipsec key_spdget uses key_setdumpsp() without SPTREE_RLOCK held (it uses 2015-01-27 17:46:55 +00:00
netnatm
netpfil Back out r276841, r276756, r276747, r276746. The change in r276747 is very 2015-01-22 01:23:16 +00:00
netsmb
nfs Remove the old NFS client and server from head, 2014-12-23 00:47:46 +00:00
nfsclient Remove the old NFS client and server from head, 2014-12-23 00:47:46 +00:00
nfsserver Use M_SIZE() instead of hand-crafted (and mostly correct) NFSMSIZ() macro 2015-01-07 17:22:56 +00:00
nlm Avoid dynamic syscall overhead for statically compiled modules. 2014-10-26 19:42:44 +00:00
ofed Revert for r277213: 2015-01-22 11:12:42 +00:00
opencrypto Add some new modes to OpenCrypto. These modes are AES-ICM (can be used 2014-12-12 19:56:36 +00:00
pc98 Factor out duplicated code from dumpsys() on each architecture into generic 2015-01-07 01:01:39 +00:00
powerpc Do not qualify the mcontext_t *mcp argument for set_mcontext(9) as 2015-01-31 21:43:46 +00:00
rpc Add facility to stop all userspace processes. The supposed use of the 2014-12-13 16:18:29 +00:00
security Adjust printf format specifiers for dev_t and ino_t in kernel. 2014-12-17 07:27:19 +00:00
sparc64 Do not qualify the mcontext_t *mcp argument for set_mcontext(9) as 2015-01-31 21:43:46 +00:00
sys Do not qualify the mcontext_t *mcp argument for set_mcontext(9) as 2015-01-31 21:43:46 +00:00
teken mdoc: improvements to SEE ALSO. 2014-12-27 07:07:37 +00:00
tools Allow the make_dtb script to work outside of a "make buildkernel" context 2014-08-30 22:39:15 +00:00
ufs When mounting SU-enabled mount point, wait until the softdep_flush() 2015-01-30 11:41:46 +00:00
vm Update mtime for tmpfs files modified through memory mapping. Similar 2015-01-28 10:37:23 +00:00
x86 Opt for performance over power-saving on Intel CPUs that have a 2015-01-29 20:41:42 +00:00
xdr
xen Pacify clang 3.3 by ending the file with a newline. This is common 2015-01-06 21:26:35 +00:00
Makefile Remove "pci" from CSCOPEDIRS. 2014-09-23 06:32:19 +00:00