Hi,
I've recently installed 2.6.29.1 on one of my machines, and I'm observing following errors:
[ 5593.311942] BUG: sleeping function called from invalid context at mm/slub.c:1599
[ 5593.311948] in_atomic(): 1, irqs_disabled(): 0, pid: 5430, name: nfsd
[ 5593.311950] 4 locks held by nfsd/5430:
[ 5593.311952] #0: (hash_sem){....}, at: [<ffffffffa03cb360>] exp_readlock+0x10/0x20 [nfsd]
[ 5593.311971] #1: (&type->i_mutex_dir_key#6/1){....}, at: [<ffffffffa03c97e9>] nfsd_create_v3+0x309/0x490 [nfsd]
[ 5593.311987] #2: (&(&ip->i_lock)->mr_lock/1){....}, at: [<ffffffffa0492352>] xfs_ilock+0x82/0xa0 [xfs]
[ 5593.312022] #3: (&pag->pag_ici_lock){....}, at: [<ffffffffa04928e3>] xfs_iget+0x113/0x5f0 [xfs]
[ 5593.312046] Pid: 5430, comm: nfsd Not tainted 2.6.29lb.00_01_PRE13 #1
[ 5593.312048] Call Trace:
[ 5593.312056] [<ffffffff80268a15>] ? __debug_show_held_locks+0x15/0x30
[ 5593.312061] [<ffffffff80237611>] __might_sleep+0x101/0x130
[ 5593.312065] [<ffffffff802c5ce1>] kmem_cache_alloc+0x91/0xd0
[ 5593.312071] [<ffffffff803501b0>] selinux_inode_alloc_security+0x40/0xa0
[ 5593.312075] [<ffffffff80347e7c>] security_inode_alloc+0x1c/0x20
[ 5593.312079] [<ffffffff802e2cab>] inode_init_always+0xcb/0x250
[ 5593.312099] [<ffffffffa0492997>] xfs_iget+0x1c7/0x5f0 [xfs]
[ 5593.312119] [<ffffffffa04ab725>] xfs_trans_iget+0xd5/0x100 [xfs]
[ 5593.312138] [<ffffffffa0497006>] xfs_ialloc+0xb6/0x680 [xfs]
[ 5593.312157] [<ffffffffa04ac1ff>] xfs_dir_ialloc+0x7f/0x2e0 [xfs]
[ 5593.312163] [<ffffffff804dc29b>] ? __down_write+0xb/0x10
[ 5593.312166] [<ffffffff8025e240>] ? down_write_nested+0x50/0x60
[ 5593.312185] [<ffffffffa04ae572>] xfs_create+0x2a2/0x470 [xfs]
[ 5593.312205] [<ffffffffa04b9e5b>] xfs_vn_mknod+0x14b/0x250 [xfs]
[ 5593.312224] [<ffffffffa04b9f7b>] xfs_vn_create+0xb/0x10 [xfs]
[ 5593.312228] [<ffffffff802d761b>] vfs_create+0xeb/0x1a0
[ 5593.312239] [<ffffffffa03c96b9>] nfsd_create_v3+0x1d9/0x490 [nfsd]
[ 5593.312252] [<ffffffffa03d0888>] nfsd3_proc_create+0x118/0x1a0 [nfsd]
[ 5593.312264] [<ffffffffa03c2265>] nfsd_dispatch+0xb5/0x230 [nfsd]
[ 5593.312285] [<ffffffffa0308afe>] svc_process+0x45e/0x760 [sunrpc]
[ 5593.312296] [<ffffffffa03c29cb>] nfsd+0x18b/0x2c0 [nfsd]
[ 5593.312307] [<ffffffffa03c2840>] ? nfsd+0x0/0x2c0 [nfsd]
[ 5593.312311] [<ffffffff80259fcd>] kthread+0x4d/0x80
[ 5593.312315] [<ffffffff8020caba>] child_rip+0xa/0x20
[ 5593.312318] [<ffffffff80259f80>] ? kthread+0x0/0x80
[ 5593.312321] [<ffffffff8020cab0>] ? child_rip+0x0/0x20
[ 9054.612648] BUG: sleeping function called from invalid context at mm/slub.c:1599
[ 9054.612652] in_atomic(): 1, irqs_disabled(): 0, pid: 9411, name: smbd
[ 9054.612655] 3 locks held by smbd/9411:
[ 9054.612656] #0: (&type->i_mutex_dir_key#6){....}, at: [<ffffffff802da4c8>] do_filp_open+0x288/0x8c0
[ 9054.612668] #1: (&(&ip->i_lock)->mr_lock/1){....}, at: [<ffffffffa0492352>] xfs_ilock+0x82/0xa0 [xfs]
[ 9054.612697] #2: (&pag->pag_ici_lock){....}, at: [<ffffffffa04928e3>] xfs_iget+0x113/0x5f0 [xfs]
[ 9054.612721] Pid: 9411, comm: smbd Not tainted 2.6.29lb.00_01_PRE13 #1
[ 9054.612723] Call Trace:
[ 9054.612730] [<ffffffff80268a15>] ? __debug_show_held_locks+0x15/0x30
[ 9054.612734] [<ffffffff80237611>] __might_sleep+0x101/0x130
[ 9054.612738] [<ffffffff802c5ce1>] kmem_cache_alloc+0x91/0xd0
[ 9054.612743] [<ffffffff803501b0>] selinux_inode_alloc_security+0x40/0xa0
[ 9054.612748] [<ffffffff80347e7c>] security_inode_alloc+0x1c/0x20
[ 9054.612752] [<ffffffff802e2cab>] inode_init_always+0xcb/0x250
[ 9054.612771] [<ffffffffa0492997>] xfs_iget+0x1c7/0x5f0 [xfs]
[ 9054.612791] [<ffffffffa04ab725>] xfs_trans_iget+0xd5/0x100 [xfs]
[ 9054.612811] [<ffffffffa0497006>] xfs_ialloc+0xb6/0x680 [xfs]
[ 9054.612830] [<ffffffffa04ac1ff>] xfs_dir_ialloc+0x7f/0x2e0 [xfs]
[ 9054.612835] [<ffffffff804dc29b>] ? __down_write+0xb/0x10
[ 9054.612839] [<ffffffff8025e240>] ? down_write_nested+0x50/0x60
[ 9054.612858] [<ffffffffa04ae572>] xfs_create+0x2a2/0x470 [xfs]
[ 9054.612884] [<ffffffffa04b9e5b>] xfs_vn_mknod+0x14b/0x250 [xfs]
[ 9054.612902] [<ffffffffa04b9f7b>] xfs_vn_create+0xb/0x10 [xfs]
[ 9054.612906] [<ffffffff802d761b>] vfs_create+0xeb/0x1a0
[ 9054.612910] [<ffffffff802daa31>] do_filp_open+0x7f1/0x8c0
[ 9054.612914] [<ffffffff802e471a>] ? alloc_fd+0x10a/0x140
[ 9054.612918] [<ffffffff802cb72e>] do_sys_open+0x5e/0xf0
[ 9054.612921] [<ffffffff802cb7eb>] sys_open+0x1b/0x20
[ 9054.612925] [<ffffffff8020b9db>] system_call_fastpath+0x16/0x1b
With command being either nfsd, or smbd. It doesn't seem to cause any harm.
According to git, this problem certainly hasn't been fixed yet.
Could somebody please have a look on this?
The system is dual-core core2 with 2GB RAM, running x86_64 centos 5.3
If more information or testing is needed, I'll gladly provide it.
with best regards
nik
--
-------------------------------------
Nikola CIPRICH
LinuxBox.cz, s.r.o.
28. rijna 168, 709 01 Ostrava
tel.: +420 596 603 142
fax: +420 596 621 273
mobil: +420 777 093 799
http://www.linuxbox.cz
mobil servis: +420 737 238 656
email servis: [email protected]
-------------------------------------
On Wed, 15 Apr 2009, Nikola Ciprich wrote:
> Hi,
> I've recently installed 2.6.29.1 on one of my machines, and I'm observing following errors:
>
> [ 5593.311942] BUG: sleeping function called from invalid context at mm/slub.c:1599
> [ 5593.311948] in_atomic(): 1, irqs_disabled(): 0, pid: 5430, name: nfsd
Allocating an object with __GFP_WAIT while in_atomic().
> [ 5593.311950] 4 locks held by nfsd/5430:
> [ 5593.311952] #0: (hash_sem){....}, at: [<ffffffffa03cb360>] exp_readlock+0x10/0x20 [nfsd]
> [ 5593.311971] #1: (&type->i_mutex_dir_key#6/1){....}, at: [<ffffffffa03c97e9>] nfsd_create_v3+0x309/0x490 [nfsd]
> [ 5593.311987] #2: (&(&ip->i_lock)->mr_lock/1){....}, at: [<ffffffffa0492352>] xfs_ilock+0x82/0xa0 [xfs]
> [ 5593.312022] #3: (&pag->pag_ici_lock){....}, at: [<ffffffffa04928e3>] xfs_iget+0x113/0x5f0 [xfs]
Holding pag->pag_ici_lock, meaning this is atomic.
> [ 5593.312046] Pid: 5430, comm: nfsd Not tainted 2.6.29lb.00_01_PRE13 #1
> [ 5593.312048] Call Trace:
> [ 5593.312056] [<ffffffff80268a15>] ? __debug_show_held_locks+0x15/0x30
> [ 5593.312061] [<ffffffff80237611>] __might_sleep+0x101/0x130
> [ 5593.312065] [<ffffffff802c5ce1>] kmem_cache_alloc+0x91/0xd0
> [ 5593.312071] [<ffffffff803501b0>] selinux_inode_alloc_security+0x40/0xa0
This is a GFP_NOFS allocation, which sets __GFP_WAIT.
David, do you think this could be related to holding pag->pag_ici_lock
while calling xfs_iget_cache_hit() in
6441e549157b749bae003cce70b4c8b62e4801fa?
> [ 5593.312075] [<ffffffff80347e7c>] security_inode_alloc+0x1c/0x20
> [ 5593.312079] [<ffffffff802e2cab>] inode_init_always+0xcb/0x250
> [ 5593.312099] [<ffffffffa0492997>] xfs_iget+0x1c7/0x5f0 [xfs]
> [ 5593.312119] [<ffffffffa04ab725>] xfs_trans_iget+0xd5/0x100 [xfs]
> [ 5593.312138] [<ffffffffa0497006>] xfs_ialloc+0xb6/0x680 [xfs]
> [ 5593.312157] [<ffffffffa04ac1ff>] xfs_dir_ialloc+0x7f/0x2e0 [xfs]
> [ 5593.312163] [<ffffffff804dc29b>] ? __down_write+0xb/0x10
> [ 5593.312166] [<ffffffff8025e240>] ? down_write_nested+0x50/0x60
> [ 5593.312185] [<ffffffffa04ae572>] xfs_create+0x2a2/0x470 [xfs]
> [ 5593.312205] [<ffffffffa04b9e5b>] xfs_vn_mknod+0x14b/0x250 [xfs]
> [ 5593.312224] [<ffffffffa04b9f7b>] xfs_vn_create+0xb/0x10 [xfs]
> [ 5593.312228] [<ffffffff802d761b>] vfs_create+0xeb/0x1a0
> [ 5593.312239] [<ffffffffa03c96b9>] nfsd_create_v3+0x1d9/0x490 [nfsd]
> [ 5593.312252] [<ffffffffa03d0888>] nfsd3_proc_create+0x118/0x1a0 [nfsd]
> [ 5593.312264] [<ffffffffa03c2265>] nfsd_dispatch+0xb5/0x230 [nfsd]
> [ 5593.312285] [<ffffffffa0308afe>] svc_process+0x45e/0x760 [sunrpc]
> [ 5593.312296] [<ffffffffa03c29cb>] nfsd+0x18b/0x2c0 [nfsd]
> [ 5593.312307] [<ffffffffa03c2840>] ? nfsd+0x0/0x2c0 [nfsd]
> [ 5593.312311] [<ffffffff80259fcd>] kthread+0x4d/0x80
> [ 5593.312315] [<ffffffff8020caba>] child_rip+0xa/0x20
> [ 5593.312318] [<ffffffff80259f80>] ? kthread+0x0/0x80
> [ 5593.312321] [<ffffffff8020cab0>] ? child_rip+0x0/0x20
>
Hi David,
thanks for a reply.
I've also created a SGI bugzilla report:
http://oss.sgi.com/bugzilla/show_bug.cgi?id=819
BR
nik
On Wed, Apr 15, 2009 at 11:33:54AM -0700, David Rientjes wrote:
> David, do you think this could be related to holding pag->pag_ici_lock
> while calling xfs_iget_cache_hit() in
> 6441e549157b749bae003cce70b4c8b62e4801fa?
--
-------------------------------------
Nikola CIPRICH
LinuxBox.cz, s.r.o.
28. rijna 168, 709 01 Ostrava
tel.: +420 596 603 142
fax: +420 596 621 273
mobil: +420 777 093 799
http://www.linuxbox.cz
mobil servis: +420 737 238 656
email servis: [email protected]
-------------------------------------