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92a15f946b
freebsd-dev/sys
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Ryan Stone 92a15f946b Add missing M_NOWAIT flag 
The LinuxKPI linux_dma code calls PCTRIE_INSERT with a
mutex held, but does not set M_NOWAIT when allocating
nodes, leading to a potential panic.  All of this code
can handle an allocation failure here, so prefer an
allocation failure to sleeping on memory.

Also fix a related case where NOWAIT/WAITOK was not
specified.  In this case it's not clear whether sleeping
is allowed so be conservative and assume not.  There are
a lot of other paths in this code that can fail due to
a lack of memory anyway.

Differential Revision: https://reviews.freebsd.org/D22127
Reviewed by: imp
Sponsored by: Dell EMC Isilon
MFC After: 1 week
2019-10-23 17:20:20 +00:00
..
amd64 amd64 pmap: conditionalize per-superpage locks on NUMA 2019-10-22 22:55:46 +00:00
arm axp81x: Use the default regnode_init method 2019-10-23 09:54:50 +00:00
arm64 Stop enabling interrupts when reentering kdb on arm64 2019-10-23 13:21:15 +00:00
bsm
cam Add kern.cam.da.X.quirks tunable, similar existing for ada. 2019-09-26 14:48:39 +00:00
cddl Assert that vnode_pager_setsize() is called with the vnode exclusively locked 2019-10-22 16:21:24 +00:00
compat Add missing M_NOWAIT flag 2019-10-23 17:20:20 +00:00
conf Add driver for DesignWare PCIE core, and its Armada 8K specific attachement. 2019-10-20 11:11:32 +00:00
contrib Merge ACPICA 20191018. 2019-10-19 14:56:44 +00:00
crypto Stop using des_cblock * for arguments to DES functions. 2019-08-26 17:25:07 +00:00
ddb ddb(4): Add some support for lexing IPv6 addresses 2019-09-09 16:32:23 +00:00
dev Set OBJ_NOSPLIT on the ksyms(4) VM object. 2019-10-23 16:53:37 +00:00
dts dtso: allwinner: Add an overlay for H3 thermal node 2019-08-24 13:26:34 +00:00
fs pseudofs: hashed vncache 2019-10-22 22:52:53 +00:00
gdb gdb(4): Implement support for NoAckMode 2019-10-17 22:37:25 +00:00
geom Make all the gnop parameters optional in the request from userland, 2019-10-16 21:49:44 +00:00
gnu arm: dts: ti: Fix mmc3 instance by setting it to disabled 2019-10-07 08:11:49 +00:00
i386 linux: futex_mtx should follow futex_list 2019-10-18 12:25:33 +00:00
isa
kern Fix undefined behavior. 2019-10-23 16:06:47 +00:00
kgssapi Stop using des_cblock * for arguments to DES functions. 2019-08-26 17:25:07 +00:00
libkern Remove zlib 1.0.4 from kernel. 2019-08-25 17:13:00 +00:00
mips Remove page locking from pmap_mincore(). 2019-10-16 22:03:27 +00:00
modules if_tuntap: remove if_{tun,tap}.ko -> if_tuntap.ko links 2019-10-21 20:28:38 +00:00
net Prevent a panic when a driver provides bogus debugnet parameters 2019-10-23 16:48:22 +00:00
net80211 Don't use if_maddr_rlock() in 802.11, use epoch(9) directly instead. 2019-10-10 23:55:33 +00:00
netgraph Don't use if_maddr_rlock() in ng_eiface(4), use epoch(9) directly instead. 2019-10-10 23:49:19 +00:00
netinet Fix compile issues when building a kernel without the VIMAGE option. 2019-10-19 20:48:53 +00:00
netinet6 Execute nd6_dad_timer() in the network epoch, since nd6_dad_duplicated() 2019-10-22 16:06:33 +00:00
netipsec Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
netpfil pf: Must be in NET_EPOCH to call icmp_error 2019-10-18 03:36:26 +00:00
netsmb Stop using des_cblock * for arguments to DES functions. 2019-08-26 17:25:07 +00:00
nfs
nfsclient
nfsserver
nlm
ofed VLAN_TRUNKDEV() requires epochification in ibcore after r353292. 2019-10-16 08:56:07 +00:00
opencrypto kTLS support for TLS 1.3 2019-09-27 19:17:40 +00:00
powerpc powerpc/booke: Fix Book-E boot post-minidump 2019-10-23 00:31:19 +00:00
riscv Fix atomic_*cmpset32 on riscv64 with clang. 2019-10-23 16:41:31 +00:00
rpc Avoid relying on header pollution from sys/refcount.h. 2019-07-29 20:26:01 +00:00
security Define macro VM_MAP_ENTRY_FOREACH for enumerating the entries in a vm_map. 2019-10-08 07:14:21 +00:00
sparc64 Split out a more generic debugnet(4) from netdump(4) 2019-10-17 16:23:03 +00:00
sys Assert that vnode_pager_setsize() is called with the vnode exclusively locked 2019-10-22 16:21:24 +00:00
teken Adjust teken to allow build as part of loader 2019-09-05 18:07:40 +00:00
tests
tools fw_stub.awk: use @generated tag in generated files 2019-09-11 13:35:22 +00:00
ufs Abbreviate softdep lock names. 2019-10-18 17:01:27 +00:00
vm Assert that vm_fault_lock_vnode() returns locked saved vnode. 2019-10-23 07:36:26 +00:00
x86 hw.intrbalance: Make sysctl tunable 2019-10-19 16:37:49 +00:00
xdr
xen
Makefile