Mateusz Guzik 68ac2b804c vfs: fix vnode reclaim races against getnwevnode ... All vnodes allocated by UMA are present on the global list used by vnlru. getnewvnode modifies the state of the vnode (most notably altering v_holdcnt) but never locks it. Moreover filesystems also modify it in arbitrary manners sometimes before taking the vnode lock or adding any other indicator that the vnode can be used. Picking up such a vnode by vnlru would be problematic. To that end there are 2 fixes: - vlrureclaim, not recycling v_holdcnt == 0 vnodes, takes the interlock and verifies that v_mount has been set. It is an invariant that the vnode lock is held by that point, providing the necessary serialisation against locking after vhold. - vnlru_free_locked, only wanting to free v_holdcnt == 0 vnodes, now makes sure to only transition the count 0->1 and newly allocated vnodes start with v_holdcnt == VHOLD_NO_SMR. getnewvnode will only transition VHOLD_NO_SMR->1 once more making the hold fail Tested by: pho		2020-10-27 18:12:07 +00:00
..
amd64	Fix misnomer - linux_to_bsd_errno() does the exact opposite.	2020-10-27 12:49:40 +00:00
arm	Simplify preload_dump() condition	2020-10-15 20:21:15 +00:00
arm64	o Add the domain member to the struct bus_dma_tag_common as required by	2020-10-27 15:29:53 +00:00
bsm
cam	Introduce support of SCSI Command Priority.	2020-10-25 19:34:02 +00:00
cddl	Fix build after r367020	2020-10-24 23:21:51 +00:00
compat	Fix misnomer - linux_to_bsd_errno() does the exact opposite.	2020-10-27 12:49:40 +00:00
conf	backlight(9): compile with COMPAT_LINUXKPI as well	2020-10-24 15:38:04 +00:00
contrib	zfs: remove unused support for zfs_znode_move	2020-10-26 08:17:41 +00:00
crypto	Add a new CCP device ID found on my Ryzen 5 3600XT.	2020-10-22 17:46:55 +00:00
ddb	db_search_symbol: prevent pollution from bogus symbols	2020-10-26 16:42:53 +00:00
dev	Introduce support of SCSI Command Priority.	2020-10-25 19:34:02 +00:00
dts	Brand our DTS with the Linux version it was imported from	2020-10-10 07:18:51 +00:00
fs	vfs: drop spurious cache_purge on rmdir	2020-10-23 15:50:49 +00:00
gdb	gdb(4): Don't escape GDB special characters at application layer	2020-09-30 14:55:54 +00:00
geom	Remove frontstuff	2020-10-27 06:43:24 +00:00
gnu	Brand our DTS with the Linux version it was imported from	2020-10-10 07:18:51 +00:00
i386	Fix misnomer - linux_to_bsd_errno() does the exact opposite.	2020-10-27 12:49:40 +00:00
isa
kern	vfs: fix vnode reclaim races against getnwevnode	2020-10-27 18:12:07 +00:00
kgssapi	State kgssapi dependency on xdr.	2020-09-17 22:29:38 +00:00
libkern	arc4random(9): Integrate with RANDOM_FENESTRASX push-reseed	2020-10-10 21:48:06 +00:00
mips	Avoid dump_avail[] redefinition.	2020-10-14 22:51:40 +00:00
modules	Factor out generic IP over infiniband, IPoIB, definitions and code	2020-10-22 09:09:53 +00:00
net	More style fixes (partial revert of r366994).	2020-10-24 13:07:50 +00:00
net80211	net80211: factor out the priv(9) checks into OS specifc code.	2020-10-18 21:34:04 +00:00
netgraph	ng_l2tp: Fix callout synchronization in the rexmit timeout handler	2020-09-25 18:55:50 +00:00
netinet	TCP Cubic: improve reaction to (and rollback from) RTO	2020-10-24 16:11:46 +00:00
netinet6	icmp6: Count packets dropped due to an invalid hop limit	2020-10-19 17:07:19 +00:00
netipsec	Trigger soft lifetime expiration on sequence number	2020-10-16 11:27:01 +00:00
netpfil	Add dtrace SDT probe ipfw:::rule-matched.	2020-10-21 15:01:33 +00:00
netsmb	net: clean up empty lines in .c and .h files	2020-09-01 21:19:14 +00:00
nfs	nfs: clean up empty lines in .c and .h files	2020-09-01 21:25:39 +00:00
nfsclient	nfs: clean up empty lines in .c and .h files	2020-09-01 21:25:39 +00:00
nfsserver	nfs: clean up empty lines in .c and .h files	2020-09-01 21:25:39 +00:00
nlm	nlm: clean up empty lines in .c and .h files	2020-09-01 22:14:52 +00:00
ofed	Factor out generic IP over infiniband, IPoIB, definitions and code	2020-10-22 09:09:53 +00:00
opencrypto	Fix a couple of bugs for asym crypto introduced in r359374.	2020-10-19 20:04:03 +00:00
powerpc	Avoid dump_avail[] redefinition.	2020-10-14 22:51:40 +00:00
riscv	riscv: Minor cleanup in startup code	2020-10-27 12:44:49 +00:00
rpc	Fix a potential memory leak in the NFS over TLS handling code.	2020-09-05 00:50:52 +00:00
security	mac_framework.h: fix build with DEBUG_VFS_LOCKS and !MAC	2020-09-03 20:30:52 +00:00
sys	refcount: make it atomic-clean	2020-10-27 18:11:11 +00:00
teken	Do a sweep and remove most WARNS=6 settings	2020-10-01 01:10:51 +00:00
tests	Add small tool to invoke kernel test framework tests.	2020-09-02 09:20:40 +00:00
tools	Brand our DTS with the Linux version it was imported from	2020-10-10 07:18:51 +00:00
ufs	Various new check-hash checks have been added to the UFS filesystem	2020-10-25 00:43:48 +00:00
vm	Conditionally compile struct vm_phys_seg's md_first field. This field is	2020-10-23 06:24:38 +00:00
x86	Move the iommu stubs to a generic place, so they are available on all the	2020-10-23 21:27:48 +00:00
xdr	xdr: clean up empty lines in .c and .h files	2020-09-01 22:13:28 +00:00
xen	xen: clean up empty lines in .c and .h files	2020-09-01 21:21:55 +00:00
Makefile