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aeb325719a
freebsd/sys
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Konstantin Belousov aeb325719a Several threads in a process may do vfork() simultaneously. Then, all 
parent threads sleep on the parent' struct proc until corresponding
child releases the vmspace. Each sleep is interlocked with proc mutex of
the child, that triggers assertion in the sleepq_add(). The assertion
requires that at any time, all simultaneous sleepers for the channel use
the same interlock.

Silent the assertion by using conditional variable allocated in the
child. Broadcast the variable event on exec() and exit().

Since struct proc * sleep wait channel is overloaded for several
unrelated events, I was unable to remove wakeups from the places where
cv_broadcast() is added, except exec().

Reported and tested by:	ganbold
Suggested and reviewed by:	jhb
MFC after:	2 week
2008-12-05 20:50:24 +00:00
..
amd64 Improve db_backtrace() for compat ia32 on amd64. 32bit image enters 2008-12-05 11:34:36 +00:00
arm Avoid confusion and adjust link address range of Marvell Orion kernel so it is 2008-12-05 15:31:51 +00:00
boot Another, hopefully final set of changes to boot0 and boot0cfg. 2008-12-03 14:53:59 +00:00
bsm Merge OpenBSM 1.1 alpha 2 from the OpenBSM vendor branch to head, both 2008-12-02 23:26:43 +00:00
cam Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
cddl Put the MIPS support back in after it was removed in r185029. 2008-12-04 16:31:08 +00:00
compat When unloading a 32-bit system call module, restore the sysent vector in 2008-12-03 18:45:38 +00:00
conf Integrate 185578 from dfr 2008-12-04 07:59:05 +00:00
contrib Rather than using hidden includes (with cicular dependencies), 2008-12-02 21:37:28 +00:00
crypto Fix a potential NULL-pointer dereference in padlock(4). 2008-11-17 19:00:36 +00:00
ddb
dev Move to using filter for the change interrupts. Also rework the power 2008-12-05 05:20:08 +00:00
fs The timezone byte is a signed value, treat it as such. 2008-11-27 06:21:04 +00:00
gdb
geom Trivial patch to show on which geom has the error been detected. 2008-12-01 15:02:00 +00:00
gnu Adapt to accmode_t changes. 2008-11-14 09:58:16 +00:00
i386 Integrate 185578 from dfr 2008-12-04 07:59:05 +00:00
ia64 Remove "[KEEP THIS!]" from COMPAT_43TTY. It's not really that important. 2008-12-02 19:09:08 +00:00
isa Allow device hints to wire the unit numbers of devices. 2008-11-18 21:01:54 +00:00
kern Several threads in a process may do vfork() simultaneously. Then, all 2008-12-05 20:50:24 +00:00
kgssapi Call svc_freereq() before returning from the service proc. 2008-11-12 15:31:05 +00:00
libkern
mips Switch to ath hal source code. Note this removes the ath_hal 2008-12-01 16:53:01 +00:00
modules Rather than using hidden includes (with cicular dependencies), 2008-12-02 21:37:28 +00:00
net Rather than using hidden includes (with cicular dependencies), 2008-12-02 21:37:28 +00:00
net80211 Rather than using hidden includes (with cicular dependencies), 2008-12-02 21:37:28 +00:00
netatalk Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
netgraph Rather than using hidden includes (with cicular dependencies), 2008-12-02 21:37:28 +00:00
netinet In a case of CARP status change run through the if_link_state_change() 2008-12-05 14:37:14 +00:00
netinet6 Rather than using hidden includes (with cicular dependencies), 2008-12-02 21:37:28 +00:00
netipsec Rather than using hidden includes (with cicular dependencies), 2008-12-02 21:37:28 +00:00
netipx Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
netnatm Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
netncp Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
netsmb Implement device cloning for /dev/nsmb, the netsmb control pseudo-device. 2008-11-03 14:23:15 +00:00
nfs
nfs4client Introduce accmode_t. This is required for NFSv4 ACLs - it will be neccessary 2008-10-28 13:44:11 +00:00
nfsclient Rather than using hidden includes (with cicular dependencies), 2008-12-02 21:37:28 +00:00
nfsserver Change nfsserver slightly so that it does not trip over the timestamp 2008-12-03 17:54:09 +00:00
nlm Don't call svc_freereq() before svc_freeargs(). 2008-11-12 15:30:30 +00:00
opencrypto Don't hang if encrypting/decrypting using struct iovecs where one of the 2008-10-30 16:11:07 +00:00
pc98 Remove "[KEEP THIS!]" from COMPAT_43TTY. It's not really that important. 2008-12-02 19:09:08 +00:00
pccard
pci Update if_iqdrops instead of if_ierrors when m_devget(9) fails. 2008-12-03 03:20:18 +00:00
powerpc Remove "[KEEP THIS!]" from COMPAT_43TTY. It's not really that important. 2008-12-02 19:09:08 +00:00
rpc Add a missing call to mtx_destroy(). 2008-11-12 12:21:18 +00:00
security Merge OpenBSM 1.1 alpha 2 from the OpenBSM vendor branch to head, both 2008-12-02 23:26:43 +00:00
sparc64 Remove "[KEEP THIS!]" from COMPAT_43TTY. It's not really that important. 2008-12-02 19:09:08 +00:00
sun4v Remove "[KEEP THIS!]" from COMPAT_43TTY. It's not really that important. 2008-12-02 19:09:08 +00:00
sys Several threads in a process may do vfork() simultaneously. Then, all 2008-12-05 20:50:24 +00:00
tools Remove some unused and broken code that attempted to not invoke locking 2008-11-03 19:57:40 +00:00
ufs Do not lock vnode interlock around reading of v_iflag to check VI_DOOMED. 2008-12-02 11:12:50 +00:00
vm Instead of forcing vn_start_write() to reset mp back to NULL for the 2008-11-16 21:57:54 +00:00
xdr Use the remote address for access control, not the local address. This fixes 2008-11-13 14:36:52 +00:00
xen Integrate 185578 from dfr 2008-12-04 07:59:05 +00:00
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