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16f224b5f8
freebsd-dev/sys
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Vincenzo Maffione 16f224b5f8 netmap: vtnet: fix races in vtnet_netmap_reg() 
The nm_register callback needs to call nm_set_native_flags()
or nm_clear_native_flags() once the device has been stopped.
However, in the current implementation this is not true,
as the device is stopped by vtnet_init_locked(). This causes
race conditions where the driver crashes as soon as it
dequeues netmap buffers assuming they are mbufs (or the other
way around).
To fix the issue, we extend vtnet_init_locked() with a second
argument that, if not zero, will set/clear the netmap flags.
This results in a huge simplification of the nm_register
callback itself.
Also, use netmap_reset() to check if a ring is going to be
re-initialized in netmap mode.

MFC after:	1 week
2020-06-14 20:47:31 +00:00
..
amd64 Control for Special Register Buffer Data Sampling mitigation. 2020-06-12 22:14:45 +00:00
arm Fix grabbing of tegra uart. 2020-06-11 12:53:22 +00:00
arm64 Coresight replicator: 2020-06-12 17:31:38 +00:00
bsm bsm: add AUE_CLOSERANGE 2020-04-24 01:27:25 +00:00
cam Implement zero-copy iSCSI target transmission/read. 2020-06-08 20:53:57 +00:00
cddl Fix export_args ex_flags field so that is 64bits, the same as mnt_flags. 2020-06-14 00:10:18 +00:00
compat Make linux(4) warn about unsupported CMSG level/type. 2020-06-14 14:38:40 +00:00
conf Coresight replicator: 2020-06-12 17:31:38 +00:00
contrib Document upgrade procedure in FREEBSD-upgrade 2020-06-04 20:48:57 +00:00
crypto Fix AES-CCM requests with an AAD size smaller than a single block. 2020-06-12 21:33:02 +00:00
ddb kernel: provide panicky version of __unreachable 2020-05-13 18:07:37 +00:00
dev netmap: vtnet: fix races in vtnet_netmap_reg() 2020-06-14 20:47:31 +00:00
dts Remove licenses 2020-06-04 17:20:58 +00:00
fs Add support for the timecreate attribute 2020-06-14 11:41:57 +00:00
gdb Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
geom Add a crypto capability flag for accelerated software drivers. 2020-06-09 22:26:07 +00:00
gnu dts: patch the am33xx dts for upcoming clock support 2020-06-05 20:14:54 +00:00
i386 FPU init: allocate initial state from UMA to ensure alignment 2020-06-12 21:17:56 +00:00
isa sc(4) md bits: stop setting sc->kbd entirely 2019-12-30 02:07:55 +00:00
kern Fix export_args ex_flags field so that is 64bits, the same as mnt_flags. 2020-06-14 00:10:18 +00:00
kgssapi Add support for optional separate output buffers to in-kernel crypto. 2020-05-25 22:12:04 +00:00
libkern libkern: Add arc4random_uniform 2020-05-23 17:51:06 +00:00
mips Various fixes to TLS for MIPS. 2020-06-12 21:21:18 +00:00
modules Hard-code the ice_ddp firmware version. 2020-06-11 00:36:35 +00:00
net Decode the "LACP Fast Timeout" LAGG option flag 2020-06-11 22:46:08 +00:00
net80211 [net80211] Treat frames without an rx status as not a decap'ed A-MSDU. 2020-06-14 00:23:06 +00:00
netgraph Add LE events: 2020-06-10 04:54:02 +00:00
netinet Allocate the mbuf for the signature in the COOKIE or the correct size. 2020-06-14 16:05:08 +00:00
netinet6 Retire SCTP_SO_LOCK_TESTING. 2020-06-07 14:39:20 +00:00
netipsec Consistently include opt_ipsec.h for consumers of <netipsec/ipsec.h>. 2020-05-29 19:22:40 +00:00
netpfil ipfw: unbreak matching with big table type flow. 2020-06-04 14:15:39 +00:00
netsmb Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
nfs Use epoch(9) for rtentries to simplify control plane operations. 2020-05-23 10:21:02 +00:00
nfsclient
nfsserver
nlm Fix export_args ex_flags field so that is 64bits, the same as mnt_flags. 2020-06-14 00:10:18 +00:00
ofed Convert OFED rtable interactions to the new routing KPI. 2020-04-15 13:06:55 +00:00
opencrypto Various optimizations to software AES-CCM and AES-GCM. 2020-06-12 23:10:30 +00:00
powerpc powerpc/pmap: Fix pte_find_next() iterators for booke64 pmap 2020-06-10 23:03:35 +00:00
riscv riscv: Use SBI shutdown call to implement RB_POWEROFF 2020-06-08 17:57:21 +00:00
rpc Add the .h file that describes the operations for the rpctls_syscall. 2020-05-31 01:12:52 +00:00
security mac_veriexec_fingerprint_check_vnode: v_writecount > 0 means active writers 2020-06-12 21:51:20 +00:00
sys Move font related data structured to sys/font.c and update vtfontcvt 2020-06-14 06:58:58 +00:00
teken
tests Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
tools vfs: stop null checking routines in vop wrappers 2020-01-26 00:41:38 +00:00
ufs Fix export_args ex_flags field so that is 64bits, the same as mnt_flags. 2020-06-14 00:10:18 +00:00
vm Honor db_pager_quit in some vm_object ddb commands 2020-06-12 21:53:08 +00:00
x86 Control for Special Register Buffer Data Sampling mitigation. 2020-06-12 22:14:45 +00:00
xdr Split XDR into separate kernel module. Make krpc depend on xdr. 2020-04-17 06:04:20 +00:00
xen Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (16 of many) 2020-02-25 19:04:39 +00:00
Makefile Remove sparc64 kernel support 2020-02-03 17:35:11 +00:00