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39845728a1
freebsd-skq/sys
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Konstantin Belousov 39845728a1 Fix spurious ENOTCONN from closed unix domain socket other' side. 
Sometimes, when doing read(2) over unix domain socket, for which the
other side socket was closed, read(2) returns -1/ENOTCONN instead of
EOF AKA zero-size read. This is because soreceive_generic() does not
lock socket when testing the so_state SS_ISCONNECTED|SS_ISCONNECTING
flags. It could end up that we do not observe so->so_rcv.sb_state bit
SBS_CANTRCVMORE, and then miss SS_ flags.

Change the test to check that the socket was never connected before
returning ENOTCONN, by adding all state bits for connected.

Reported and tested by:	pho
In collaboration with:	markj
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D24819
2020-05-14 17:54:08 +00:00
..
amd64 Call acpi_pxm_set_proximity_info() slightly earlier on x86. 2020-05-14 16:07:27 +00:00
arm Revert r360944 and r360946 until reported issues can be resolved 2020-05-12 04:34:26 +00:00
arm64 Call acpi_pxm_set_proximity_info() slightly earlier on x86. 2020-05-14 16:07:27 +00:00
bsm bsm: add AUE_CLOSERANGE 2020-04-24 01:27:25 +00:00
cam Add nvd alias back to nda now that it actually works. 2020-05-13 19:17:35 +00:00
cddl Avoid the GEOM topology lock recursion when we automatically expand a pool. 2020-04-25 21:45:31 +00:00
compat linuxkpi: Add EBADRQC to errno.h 2020-05-13 07:49:12 +00:00
conf Remove tests for obsolete compilers in the build system 2020-05-12 15:22:40 +00:00
contrib [ath_hal_ar9300] Ensure AH_BYTE_ORDER is defined before used. 2020-05-12 02:23:11 +00:00
crypto Remove MD5 HMAC from OCF. 2020-05-11 22:08:08 +00:00
ddb kernel: provide panicky version of __unreachable 2020-05-13 18:07:37 +00:00
dev Call acpi_pxm_set_proximity_info() slightly earlier on x86. 2020-05-14 16:07:27 +00:00
dts allwinner: aw_thermal: Cope with DTS changes 2020-04-14 19:05:17 +00:00
fs Remove unused header for DES. 2020-05-13 18:35:02 +00:00
gdb Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
geom Reimplement aliases in geom 2020-05-13 19:17:28 +00:00
gnu dts: Import DTS from Linux 5.6 2020-04-14 18:57:00 +00:00
i386 Call acpi_pxm_set_proximity_info() slightly earlier on x86. 2020-05-14 16:07:27 +00:00
isa sc(4) md bits: stop setting sc->kbd entirely 2019-12-30 02:07:55 +00:00
kern Fix spurious ENOTCONN from closed unix domain socket other' side. 2020-05-14 17:54:08 +00:00
kgssapi Remove support for Kernel GSS algorithms deprecated in r348875. 2020-04-10 23:08:41 +00:00
libkern Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
mips Revert r360944 and r360946 until reported issues can be resolved 2020-05-12 04:34:26 +00:00
modules Remove tests for obsolete compilers in the build system 2020-05-12 15:22:40 +00:00
net kernel: provide panicky version of __unreachable 2020-05-13 18:07:37 +00:00
net80211 [net80211] Use the unicast key when transmitting DWDS AP multicast frames. 2020-05-08 17:01:33 +00:00
netgraph Add space for RSSI in data member. 2020-05-09 14:15:44 +00:00
netinet libalias: fix potential memory disclosure from ftp module 2020-05-12 16:38:28 +00:00
netinet6 IPv6: Fix a panic in the nd6 code with unmapped mbufs. 2020-05-12 17:18:44 +00:00
netipsec Don't pass bogus keys down for NULL algorithms. 2020-05-02 01:00:29 +00:00
netpfil pf: Don't allocate per-table entry counters unless required. 2020-05-11 18:47:38 +00:00
netsmb Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
nfs Remove rtable dumping code from bootp. 2020-04-28 07:23:41 +00:00
nfsclient
nfsserver
nlm Make nfslockd depend on xdr. 2020-04-23 09:37:22 +00:00
ofed Convert OFED rtable interactions to the new routing KPI. 2020-04-15 13:06:55 +00:00
opencrypto Trim a few more things I missed from xform_enc.h. 2020-05-13 18:36:02 +00:00
powerpc Revert r360944 and r360946 until reported issues can be resolved 2020-05-12 04:34:26 +00:00
riscv riscv: Fix pmap_protect for superpages 2020-05-13 17:20:51 +00:00
rpc Split XDR into separate kernel module. Make krpc depend on xdr. 2020-04-17 06:04:20 +00:00
security audit_canon_path_vp: don't panic if cdir == NULL 2020-04-17 02:09:31 +00:00
sys kernel: provide panicky version of __unreachable 2020-05-13 18:07:37 +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 Retire two unused background fsck sysctls. 2020-04-21 17:42:32 +00:00
vm Allocate UMA per-CPU counters earlier. 2020-05-14 16:06:54 +00:00
x86 Call acpi_pxm_set_proximity_info() slightly earlier on x86. 2020-05-14 16:07:27 +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