Peter Zijlstra 12fd352038 [PATCH] nfsd: lockdep annotation ... while doing a kernel make modules_install install over an NFS mount. ============================================= [ INFO: possible recursive locking detected ] --------------------------------------------- nfsd/9550 is trying to acquire lock: (&inode->i_mutex){--..}, at: [<c034c845>] mutex_lock+0x1c/0x1f but task is already holding lock: (&inode->i_mutex){--..}, at: [<c034c845>] mutex_lock+0x1c/0x1f other info that might help us debug this: 2 locks held by nfsd/9550: #0: (hash_sem){..--}, at: [<cc895223>] exp_readlock+0xd/0xf [nfsd] #1: (&inode->i_mutex){--..}, at: [<c034c845>] mutex_lock+0x1c/0x1f stack backtrace: [<c0103508>] show_trace_log_lvl+0x58/0x152 [<c0103b8b>] show_trace+0xd/0x10 [<c0103c2f>] dump_stack+0x19/0x1b [<c012aa57>] __lock_acquire+0x77a/0x9a3 [<c012af4a>] lock_acquire+0x60/0x80 [<c034c6c2>] __mutex_lock_slowpath+0xa7/0x20e [<c034c845>] mutex_lock+0x1c/0x1f [<c0162edc>] vfs_unlink+0x34/0x8a [<cc891d98>] nfsd_unlink+0x18f/0x1e2 [nfsd] [<cc89884f>] nfsd3_proc_remove+0x95/0xa2 [nfsd] [<cc88f0d4>] nfsd_dispatch+0xc0/0x178 [nfsd] [<c033e84d>] svc_process+0x3a5/0x5ed [<cc88f5ba>] nfsd+0x1a7/0x305 [nfsd] [<c0101005>] kernel_thread_helper+0x5/0xb DWARF2 unwinder stuck at kernel_thread_helper+0x5/0xb Leftover inexact backtrace: [<c0103b8b>] show_trace+0xd/0x10 [<c0103c2f>] dump_stack+0x19/0x1b [<c012aa57>] __lock_acquire+0x77a/0x9a3 [<c012af4a>] lock_acquire+0x60/0x80 [<c034c6c2>] __mutex_lock_slowpath+0xa7/0x20e [<c034c845>] mutex_lock+0x1c/0x1f [<c0162edc>] vfs_unlink+0x34/0x8a [<cc891d98>] nfsd_unlink+0x18f/0x1e2 [nfsd] [<cc89884f>] nfsd3_proc_remove+0x95/0xa2 [nfsd] [<cc88f0d4>] nfsd_dispatch+0xc0/0x178 [nfsd] [<c033e84d>] svc_process+0x3a5/0x5ed [<cc88f5ba>] nfsd+0x1a7/0x305 [nfsd] [<c0101005>] kernel_thread_helper+0x5/0xb ============================================= [ INFO: possible recursive locking detected ] --------------------------------------------- nfsd/9580 is trying to acquire lock: (&inode->i_mutex){--..}, at: [<c034cc1d>] mutex_lock+0x1c/0x1f but task is already holding lock: (&inode->i_mutex){--..}, at: [<c034cc1d>] mutex_lock+0x1c/0x1f other info that might help us debug this: 2 locks held by nfsd/9580: #0: (hash_sem){..--}, at: [<cc89522b>] exp_readlock+0xd/0xf [nfsd] #1: (&inode->i_mutex){--..}, at: [<c034cc1d>] mutex_lock+0x1c/0x1f stack backtrace: [<c0103508>] show_trace_log_lvl+0x58/0x152 [<c0103b8b>] show_trace+0xd/0x10 [<c0103c2f>] dump_stack+0x19/0x1b [<c012aa63>] __lock_acquire+0x77a/0x9a3 [<c012af56>] lock_acquire+0x60/0x80 [<c034ca9a>] __mutex_lock_slowpath+0xa7/0x20e [<c034cc1d>] mutex_lock+0x1c/0x1f [<cc892ad1>] nfsd_setattr+0x2c8/0x499 [nfsd] [<cc893ede>] nfsd_create_v3+0x31b/0x4ac [nfsd] [<cc8984a1>] nfsd3_proc_create+0x128/0x138 [nfsd] [<cc88f0d4>] nfsd_dispatch+0xc0/0x178 [nfsd] [<c033ec1d>] svc_process+0x3a5/0x5ed [<cc88f5ba>] nfsd+0x1a7/0x305 [nfsd] [<c0101005>] kernel_thread_helper+0x5/0xb DWARF2 unwinder stuck at kernel_thread_helper+0x5/0xb Leftover inexact backtrace: [<c0103b8b>] show_trace+0xd/0x10 [<c0103c2f>] dump_stack+0x19/0x1b [<c012aa63>] __lock_acquire+0x77a/0x9a3 [<c012af56>] lock_acquire+0x60/0x80 [<c034ca9a>] __mutex_lock_slowpath+0xa7/0x20e [<c034cc1d>] mutex_lock+0x1c/0x1f [<cc892ad1>] nfsd_setattr+0x2c8/0x499 [nfsd] [<cc893ede>] nfsd_create_v3+0x31b/0x4ac [nfsd] [<cc8984a1>] nfsd3_proc_create+0x128/0x138 [nfsd] [<cc88f0d4>] nfsd_dispatch+0xc0/0x178 [nfsd] [<c033ec1d>] svc_process+0x3a5/0x5ed [<cc88f5ba>] nfsd+0x1a7/0x305 [nfsd] [<c0101005>] kernel_thread_helper+0x5/0xb Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Neil Brown <neilb@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-10-02 07:57:20 -07:00
..
auth.c	[PATCH] knfsd: nfsd: nfsd_setuser doesn't really need to modify rqstp->rq_cred.	2006-04-11 06:18:52 -07:00
export.c	[PATCH] nfsd: add lock annotations to e_start and e_stop	2006-10-02 07:57:18 -07:00
lockd.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
Makefile	[PATCH] knfsd: nfsd4: reboot hash	2005-06-24 00:06:33 -07:00
nfs2acl.c	[PATCH] nfsd: check for read-only exports before setting acls	2005-12-20 10:31:33 -08:00
nfs3acl.c	[PATCH] nfsd: check for read-only exports before setting acls	2005-12-20 10:31:33 -08:00
nfs3proc.c	[PATCH] knfsd: Correct reserved reply space for read requests.	2006-04-11 06:18:51 -07:00
nfs3xdr.c	[PATCH] knfsd: check error status from vfs_getattr and i_op->fsync	2006-01-06 08:33:59 -08:00
nfs4acl.c	[PATCH] knfsd: nfsd4: better nfs4acl errors	2006-04-11 06:18:51 -07:00
nfs4callback.c	[PATCH] knfsd: add some missing newlines in printks	2006-10-02 07:57:17 -07:00
nfs4idmap.c	[PATCH] fs: Conversions from kmalloc+memset to k(z|c)alloc	2006-09-27 08:26:10 -07:00
nfs4proc.c	[PATCH] knfsd: add some missing newlines in printks	2006-10-02 07:57:17 -07:00
nfs4recover.c	[CRYPTO] users: Use crypto_hash interface instead of crypto_digest	2006-09-21 11:46:21 +10:00
nfs4state.c	[PATCH] Really ignore kmem_cache_destroy return value	2006-09-27 08:26:10 -07:00
nfs4xdr.c	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	2006-06-23 07:42:45 -07:00
nfscache.c	[PATCH] fs: use list_move()	2006-06-26 09:58:18 -07:00
nfsctl.c	[PATCH] knfsd: allow admin to set nthreads per node	2006-10-02 07:57:20 -07:00
nfsfh.c	[PATCH] knfsd: Fix stale file handle problem with subtree_checking.	2006-07-31 13:28:37 -07:00
nfsproc.c	[PATCH] knfsd: Correct reserved reply space for read requests.	2006-04-11 06:18:51 -07:00
nfssvc.c	[PATCH] knfsd: allow admin to set nthreads per node	2006-10-02 07:57:20 -07:00
nfsxdr.c	[PATCH] Unlinline a bunch of other functions	2006-01-14 18:27:06 -08:00
stats.c	[PATCH] knfsd: nfsd4: add per-operation server stats	2006-07-10 13:24:27 -07:00
vfs.c	[PATCH] nfsd: lockdep annotation	2006-10-02 07:57:20 -07:00