AuxXxilium/linux_dsm_epyc7002
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4b09ec4b14
linux_dsm_epyc7002/fs/nfs
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Benjamin Coddington 4b09ec4b14 nfs: Don't take a reference on fl->fl_file for LOCK operation 
I have reports of a crash that look like __fput() was called twice for
a NFSv4.0 file.  It seems possible that the state manager could try to
reclaim a lock and take a reference on the fl->fl_file at the same time the
file is being released if, during the close(), a signal interrupts the wait
for outstanding IO while removing locks which then skips the removal
of that lock.

Since 83bfff23e9 ("nfs4: have do_vfs_lock take an inode pointer") has
removed the need to traverse fl->fl_file->f_inode in nfs4_lock_done(),
taking that reference is no longer necessary.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-01-12 12:51:29 -05:00
..
blocklayout
filelayout NFSv4.1: nfs4_fl_prepare_ds must be careful about reporting success. 2016-12-19 17:29:48 -05:00
flexfilelayout ktime: Get rid of ktime_equal() 2016-12-25 17:21:23 +01:00
objlayout pNFS: Get rid of unnecessary layout parameter in encode_layoutreturn callback 2016-12-01 17:21:44 -05:00
cache_lib.c
cache_lib.h
callback_proc.c pNFS: Delay getting the layout header in CB_LAYOUTRECALL handlers 2016-12-01 17:21:42 -05:00
callback_xdr.c
callback.c NFSv4.x: hide array-bounds warning 2016-11-22 16:11:44 -05:00
callback.h
client.c NFS: Remove unused authflavour parameter from nfs_get_client() 2016-12-01 17:46:32 -05:00
delegation.c NFSv4: Optimise away forced revalidation when we know the attributes are OK 2016-12-01 17:21:37 -05:00
delegation.h
dir.c NFS: Fix and clean up the access cache validity checking 2016-12-19 17:29:39 -05:00
direct.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
dns_resolve.c
dns_resolve.h
file.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
fscache-index.c
fscache.c
fscache.h
getroot.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
inode.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
internal.h NFS: Clean up cache validity checking 2016-12-19 17:29:35 -05:00
io.c
iostat.h
Kconfig
Makefile
mount_clnt.c
namespace.c
netns.h netns: make struct pernet_operations::id unsigned int 2016-11-18 10:59:15 -05:00
nfs2super.c
nfs2xdr.c
nfs3_fs.h
nfs3acl.c
nfs3client.c NFS: Remove unused authflavour parameter from nfs_get_client() 2016-12-01 17:46:32 -05:00
nfs3proc.c
nfs3super.c
nfs3xdr.c
nfs4_fs.h NFSv4: change nfs4_select_rw_stateid to take a lock_context inplace of lock_owner 2016-12-01 17:57:56 -05:00
nfs4client.c NFS: Remove unused authflavour parameter from nfs_get_client() 2016-12-01 17:46:32 -05:00
nfs4file.c NFSv4: add flock_owner to open context 2016-12-01 17:57:27 -05:00
nfs4getroot.c
nfs4idmap.c
nfs4idmap.h
nfs4namespace.c
nfs4proc.c nfs: Don't take a reference on fl->fl_file for LOCK operation 2017-01-12 12:51:29 -05:00
nfs4renewd.c
nfs4session.c NFSv4.1: Fix regression in callback retry handling 2016-12-01 17:21:38 -05:00
nfs4session.h
nfs4state.c NFS: Don't disconnect open-owner on NFS4ERR_BAD_SEQID 2016-12-19 17:29:51 -05:00
nfs4super.c
nfs4sysctl.c
nfs4trace.c
nfs4trace.h
nfs4xdr.c NFSv4: Retry the DELEGRETURN if the embedded GETATTR is rejected with EACCES 2016-12-19 17:30:03 -05:00
nfs42.h
nfs42proc.c pNFS/flexfiles: Minor refactoring before adding iostats to layoutreturn 2016-12-03 15:37:45 -05:00
nfs42xdr.c pNFS/flexfiles: Minor refactoring before adding iostats to layoutreturn 2016-12-03 15:37:45 -05:00
nfs.h
nfsroot.c
nfstrace.c
nfstrace.h
pagelist.c NFS: discard nfs_lockowner structure. 2016-12-01 17:58:13 -05:00
pnfs_dev.c
pnfs_nfs.c NFS: Remove unused authflavour parameter from nfs_get_client() 2016-12-01 17:46:32 -05:00
pnfs.c pNFS: Return RW layouts on OPEN_DOWNGRADE 2016-12-19 17:29:55 -05:00
pnfs.h pNFS/flexfiles: Minor refactoring before adding iostats to layoutreturn 2016-12-03 15:37:45 -05:00
proc.c
read.c
super.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
symlink.c vfs: remove ".readlink = generic_readlink" assignments 2016-12-09 16:45:04 +01:00
sysctl.c
unlink.c
write.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00