if using dprintk and alloc pnfs_blocklayout_layout_t fail, it
maybe cause oops. we should assert the new pnfs_blocklayout_layout_t
is not null first.
Signed-off-by: fanchaoting <[email protected]>
Reviewed-by: chendt.fnst <[email protected]>
---
fs/nfsd/bl_ops.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/nfsd/bl_ops.c b/fs/nfsd/bl_ops.c
index fa129e8..a7046c6 100644
--- a/fs/nfsd/bl_ops.c
+++ b/fs/nfsd/bl_ops.c
@@ -1210,14 +1210,14 @@ layout_cache_fill_from_list(bl_layout_rec_t *r, struct list_head *h,
n = bll_alloc(seg->offset,
MIN(seg->length, BLL_F_END(b) - seg->offset),
BLOCK_LAYOUT_CACHE, h);
+ if (!n)
+ return False;
+
dprintk(" CACHE hit: Found %Lu(f):%Lu(l): "
"in %Lu(f):%Lu(l):%Lu(s):%d\n",
_2SECTS(n->bll_foff), _2SECTS(n->bll_len),
_2SECTS(b->bll_foff), _2SECTS(b->bll_len),
_2SECTS(b->bll_soff), b->bll_es);
- if (!n)
- return False;
-
n->bll_soff = b->bll_soff + seg->offset - b->bll_foff;
n->bll_vol_id.sbid = sbid;
n->bll_vol_id.devid = b->bll_vol_id.devid;
--
1.5.5.1
On 2013-03-26 12:36, fanchaoting wrote:
> if using dprintk and alloc pnfs_blocklayout_layout_t fail, it
> maybe cause oops. we should assert the new pnfs_blocklayout_layout_t
> is not null first.
>
> Signed-off-by: fanchaoting <[email protected]>
> Reviewed-by: chendt.fnst <[email protected]>
Merged into the pnfsd-block branch.
Thanks,
Benny
> ---
> fs/nfsd/bl_ops.c | 6 +++---
> 1 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/fs/nfsd/bl_ops.c b/fs/nfsd/bl_ops.c
> index fa129e8..a7046c6 100644
> --- a/fs/nfsd/bl_ops.c
> +++ b/fs/nfsd/bl_ops.c
> @@ -1210,14 +1210,14 @@ layout_cache_fill_from_list(bl_layout_rec_t *r, struct list_head *h,
> n = bll_alloc(seg->offset,
> MIN(seg->length, BLL_F_END(b) - seg->offset),
> BLOCK_LAYOUT_CACHE, h);
> + if (!n)
> + return False;
> +
> dprintk(" CACHE hit: Found %Lu(f):%Lu(l): "
> "in %Lu(f):%Lu(l):%Lu(s):%d\n",
> _2SECTS(n->bll_foff), _2SECTS(n->bll_len),
> _2SECTS(b->bll_foff), _2SECTS(b->bll_len),
> _2SECTS(b->bll_soff), b->bll_es);
> - if (!n)
> - return False;
> -
> n->bll_soff = b->bll_soff + seg->offset - b->bll_foff;
> n->bll_vol_id.sbid = sbid;
> n->bll_vol_id.devid = b->bll_vol_id.devid;
>
mount nfs dir in the client, and then restart the NFS service in MDS,
that will cause oops for client_mutex_owner is NULL in the
destroy_client() function.
kernel BUG at fs/nfsd/nfs4state.c:1130!
invalid opcode: 0000 [#1] SMP
Modules linked in: nfsd(OF) lockd exportfs nfs_acl auth_rpcgss autofs4
dlm sctp libcrc32c configfs sunrpc be2iscsi iscsi_boot_sysfs bnx2i cnic
uio cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm
ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi
scsi_transport_iscsi dm_mirror dm_region_hash dm_log dm_mod ppdev
parport_pc parport microcode pcspkr i2c_piix4 i2c_core e1000 sg ext4(F)
mbcache(F) jbd2(F) sr_mod(F) cdrom(F) sd_mod(F) crc_t10dif(F)
pata_acpi(F) ata_generic(F) ata_piix(F) ahci(F) libahci(F) [last
unloaded: speedstep_lib]
CPU 0
Pid: 2893, comm: nfsd Tainted: GF O 3.8.0-rc4_fl+ #2 innotek GmbH
VirtualBox/VirtualBox
RIP: 0010:[<ffffffffa045a4cf>] [<ffffffffa045a4cf>]
destroy_client+0x2ff/0x330 [nfsd]
RSP: 0018:ffff8800256b9d38 EFLAGS: 00010203
RAX: 0000000000000010 RBX: ffff880025630000 RCX: 0000000000001440
RDX: 00000000000025fc RSI: 0000000000000082 RDI: 0000000000000246
RBP: ffff8800256b9d88 R08: ffffffff81cdfba0 R09: 0000000000007768
R10: 00000000000001b1 R11: 00000000000001b1 R12: ffff880037988400
R13: ffff88003d58ea80 R14: ffffffff81ab2080 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00000000006d39d8 CR3: 00000000255be000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process nfsd (pid: 2893, threadinfo ffff8800256b8000, task ffff88003d58ea80)
Stack:
ffff8800256b9d78 ffff88003d51bdc0 ffff8800256b9d58 ffff880037988400
ffffffff81ab2080 ffff880037988400 0000000000000020 ffffffffa04709b0
ffffffff81ab2080 0000000000000000 ffff8800256b9dc8 ffffffffa045a555
Call Trace:
[<ffffffffa045a555>] nfs4_state_destroy_net+0x55/0x120 [nfsd]
[<ffffffffa045a718>] nfs4_state_shutdown_net+0xf8/0x140 [nfsd]
[<ffffffffa04349b0>] ? nfsd_pool_stats_release+0x50/0x50 [nfsd]
[<ffffffffa0434835>] nfsd_shutdown_net+0x35/0x60 [nfsd]
[<ffffffffa04348ad>] nfsd_last_thread+0x4d/0x80 [nfsd]
[<ffffffffa037f3e5>] svc_shutdown_net+0x35/0x40 [sunrpc]
[<ffffffffa0434935>] nfsd_destroy+0x55/0x80 [nfsd]
[<ffffffffa0434ab4>] nfsd+0x104/0x130 [nfsd]
[<ffffffffa04349b0>] ? nfsd_pool_stats_release+0x50/0x50 [nfsd]
[<ffffffff8107951e>] kthread+0xce/0xe0
[<ffffffff81079450>] ? kthread_freezable_should_stop+0x70/0x70
[<ffffffff8155c56c>] ret_from_fork+0x7c/0xb0
[<ffffffff81079450>] ? kthread_freezable_should_stop+0x70/0x70
Code: 38 d1 e0 48 89 df e8 81 38 d1 e0 e9 2f ff ff ff 0f 1f 40 00 48 c7
c7 72 8a 46 a0 31 c0 e8 86 6b 0f e1 e9 70 fd ff ff 0f 0b eb fe <0f> 0b
eb fe 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 eb f3 0f 0b
RIP [<ffffffffa045a4cf>] destroy_client+0x2ff/0x330 [nfsd]
RSP <ffff8800256b9d38>
---[ end trace c2d9f251eabc7c2d ]---
Signed-off-by: chendt.fnst <[email protected]>
Reviewed-by: fanchaoting <[email protected]>
---
fs/nfsd/nfs4state.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 13bc266..40b2348 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4936,6 +4936,8 @@ nfs4_state_destroy_net(struct net *net)
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
struct rb_node *node, *tmp;
+ nfs4_lock_state();
+
for (i = 0; i < CLIENT_HASH_SIZE; i++) {
while (!list_empty(&nn->conf_id_hashtbl[i])) {
clp = list_entry(nn->conf_id_hashtbl[i].next, struct nfs4_client,
cl_idhash);
@@ -4952,6 +4954,7 @@ nfs4_state_destroy_net(struct net *net)
destroy_client(clp);
}
+ nfs4_unlock_state();
kfree(nn->sessionid_hashtbl);
kfree(nn->lockowner_ino_hashtbl);
kfree(nn->ownerstr_hashtbl);
--
1.8.0.1
Chenditang, I see that this patch was never subimtted upstream.
Is there anything specific to pnfs that causes this bug?
The fix itself is completely generic
and if so can be back-ported to stable since v3.8
Thanks,
Benny
On 2013-04-24 00:46, chenditang wrote:
> mount nfs dir in the client, and then restart the NFS service in MDS,
> that will cause oops for client_mutex_owner is NULL in the
> destroy_client() function.
>
> kernel BUG at fs/nfsd/nfs4state.c:1130!
> invalid opcode: 0000 [#1] SMP
> Modules linked in: nfsd(OF) lockd exportfs nfs_acl auth_rpcgss autofs4
> dlm sctp libcrc32c configfs sunrpc be2iscsi iscsi_boot_sysfs bnx2i cnic
> uio cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm
> ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi
> scsi_transport_iscsi dm_mirror dm_region_hash dm_log dm_mod ppdev
> parport_pc parport microcode pcspkr i2c_piix4 i2c_core e1000 sg ext4(F)
> mbcache(F) jbd2(F) sr_mod(F) cdrom(F) sd_mod(F) crc_t10dif(F)
> pata_acpi(F) ata_generic(F) ata_piix(F) ahci(F) libahci(F) [last
> unloaded: speedstep_lib]
> CPU 0
> Pid: 2893, comm: nfsd Tainted: GF O 3.8.0-rc4_fl+ #2 innotek GmbH
> VirtualBox/VirtualBox
> RIP: 0010:[<ffffffffa045a4cf>] [<ffffffffa045a4cf>]
> destroy_client+0x2ff/0x330 [nfsd]
> RSP: 0018:ffff8800256b9d38 EFLAGS: 00010203
> RAX: 0000000000000010 RBX: ffff880025630000 RCX: 0000000000001440
> RDX: 00000000000025fc RSI: 0000000000000082 RDI: 0000000000000246
> RBP: ffff8800256b9d88 R08: ffffffff81cdfba0 R09: 0000000000007768
> R10: 00000000000001b1 R11: 00000000000001b1 R12: ffff880037988400
> R13: ffff88003d58ea80 R14: ffffffff81ab2080 R15: 0000000000000000
> FS: 0000000000000000(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: 00000000006d39d8 CR3: 00000000255be000 CR4: 00000000000006f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Process nfsd (pid: 2893, threadinfo ffff8800256b8000, task ffff88003d58ea80)
> Stack:
> ffff8800256b9d78 ffff88003d51bdc0 ffff8800256b9d58 ffff880037988400
> ffffffff81ab2080 ffff880037988400 0000000000000020 ffffffffa04709b0
> ffffffff81ab2080 0000000000000000 ffff8800256b9dc8 ffffffffa045a555
> Call Trace:
> [<ffffffffa045a555>] nfs4_state_destroy_net+0x55/0x120 [nfsd]
> [<ffffffffa045a718>] nfs4_state_shutdown_net+0xf8/0x140 [nfsd]
> [<ffffffffa04349b0>] ? nfsd_pool_stats_release+0x50/0x50 [nfsd]
> [<ffffffffa0434835>] nfsd_shutdown_net+0x35/0x60 [nfsd]
> [<ffffffffa04348ad>] nfsd_last_thread+0x4d/0x80 [nfsd]
> [<ffffffffa037f3e5>] svc_shutdown_net+0x35/0x40 [sunrpc]
> [<ffffffffa0434935>] nfsd_destroy+0x55/0x80 [nfsd]
> [<ffffffffa0434ab4>] nfsd+0x104/0x130 [nfsd]
> [<ffffffffa04349b0>] ? nfsd_pool_stats_release+0x50/0x50 [nfsd]
> [<ffffffff8107951e>] kthread+0xce/0xe0
> [<ffffffff81079450>] ? kthread_freezable_should_stop+0x70/0x70
> [<ffffffff8155c56c>] ret_from_fork+0x7c/0xb0
> [<ffffffff81079450>] ? kthread_freezable_should_stop+0x70/0x70
> Code: 38 d1 e0 48 89 df e8 81 38 d1 e0 e9 2f ff ff ff 0f 1f 40 00 48 c7
> c7 72 8a 46 a0 31 c0 e8 86 6b 0f e1 e9 70 fd ff ff 0f 0b eb fe <0f> 0b
> eb fe 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 eb f3 0f 0b
> RIP [<ffffffffa045a4cf>] destroy_client+0x2ff/0x330 [nfsd]
> RSP <ffff8800256b9d38>
> ---[ end trace c2d9f251eabc7c2d ]---
>
> Signed-off-by: chendt.fnst <[email protected]>
> Reviewed-by: fanchaoting <[email protected]>
> ---
> fs/nfsd/nfs4state.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
> index 13bc266..40b2348 100644
> --- a/fs/nfsd/nfs4state.c
> +++ b/fs/nfsd/nfs4state.c
> @@ -4936,6 +4936,8 @@ nfs4_state_destroy_net(struct net *net)
> struct nfsd_net *nn = net_generic(net, nfsd_net_id);
> struct rb_node *node, *tmp;
>
> + nfs4_lock_state();
> +
> for (i = 0; i < CLIENT_HASH_SIZE; i++) {
> while (!list_empty(&nn->conf_id_hashtbl[i])) {
> clp = list_entry(nn->conf_id_hashtbl[i].next, struct nfs4_client,
> cl_idhash);
> @@ -4952,6 +4954,7 @@ nfs4_state_destroy_net(struct net *net)
> destroy_client(clp);
> }
>
> + nfs4_unlock_state();
> kfree(nn->sessionid_hashtbl);
> kfree(nn->lockowner_ino_hashtbl);
> kfree(nn->ownerstr_hashtbl);
>
On Wed, Sep 25, 2013 at 10:58:55AM -0400, Benny Halevy wrote:
> Chenditang, I see that this patch was never subimtted upstream.
> Is there anything specific to pnfs that causes this bug?
It's not. I've just reproduced it without pnfs, by shutting down
the server after running xfstests over a NFSv4.1 mount.
> The fix itself is completely generic
> and if so can be back-ported to stable since v3.8
>
> Thanks,
>
> Benny
>
> On 2013-04-24 00:46, chenditang wrote:
> > mount nfs dir in the client, and then restart the NFS service in MDS,
> > that will cause oops for client_mutex_owner is NULL in the
> > destroy_client() function.
> >
> > kernel BUG at fs/nfsd/nfs4state.c:1130!
> > invalid opcode: 0000 [#1] SMP
> > Modules linked in: nfsd(OF) lockd exportfs nfs_acl auth_rpcgss autofs4
> > dlm sctp libcrc32c configfs sunrpc be2iscsi iscsi_boot_sysfs bnx2i cnic
> > uio cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm
> > ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi
> > scsi_transport_iscsi dm_mirror dm_region_hash dm_log dm_mod ppdev
> > parport_pc parport microcode pcspkr i2c_piix4 i2c_core e1000 sg ext4(F)
> > mbcache(F) jbd2(F) sr_mod(F) cdrom(F) sd_mod(F) crc_t10dif(F)
> > pata_acpi(F) ata_generic(F) ata_piix(F) ahci(F) libahci(F) [last
> > unloaded: speedstep_lib]
> > CPU 0
> > Pid: 2893, comm: nfsd Tainted: GF O 3.8.0-rc4_fl+ #2 innotek GmbH
> > VirtualBox/VirtualBox
> > RIP: 0010:[<ffffffffa045a4cf>] [<ffffffffa045a4cf>]
> > destroy_client+0x2ff/0x330 [nfsd]
> > RSP: 0018:ffff8800256b9d38 EFLAGS: 00010203
> > RAX: 0000000000000010 RBX: ffff880025630000 RCX: 0000000000001440
> > RDX: 00000000000025fc RSI: 0000000000000082 RDI: 0000000000000246
> > RBP: ffff8800256b9d88 R08: ffffffff81cdfba0 R09: 0000000000007768
> > R10: 00000000000001b1 R11: 00000000000001b1 R12: ffff880037988400
> > R13: ffff88003d58ea80 R14: ffffffff81ab2080 R15: 0000000000000000
> > FS: 0000000000000000(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000
> > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> > CR2: 00000000006d39d8 CR3: 00000000255be000 CR4: 00000000000006f0
> > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> > Process nfsd (pid: 2893, threadinfo ffff8800256b8000, task ffff88003d58ea80)
> > Stack:
> > ffff8800256b9d78 ffff88003d51bdc0 ffff8800256b9d58 ffff880037988400
> > ffffffff81ab2080 ffff880037988400 0000000000000020 ffffffffa04709b0
> > ffffffff81ab2080 0000000000000000 ffff8800256b9dc8 ffffffffa045a555
> > Call Trace:
> > [<ffffffffa045a555>] nfs4_state_destroy_net+0x55/0x120 [nfsd]
> > [<ffffffffa045a718>] nfs4_state_shutdown_net+0xf8/0x140 [nfsd]
> > [<ffffffffa04349b0>] ? nfsd_pool_stats_release+0x50/0x50 [nfsd]
> > [<ffffffffa0434835>] nfsd_shutdown_net+0x35/0x60 [nfsd]
> > [<ffffffffa04348ad>] nfsd_last_thread+0x4d/0x80 [nfsd]
> > [<ffffffffa037f3e5>] svc_shutdown_net+0x35/0x40 [sunrpc]
> > [<ffffffffa0434935>] nfsd_destroy+0x55/0x80 [nfsd]
> > [<ffffffffa0434ab4>] nfsd+0x104/0x130 [nfsd]
> > [<ffffffffa04349b0>] ? nfsd_pool_stats_release+0x50/0x50 [nfsd]
> > [<ffffffff8107951e>] kthread+0xce/0xe0
> > [<ffffffff81079450>] ? kthread_freezable_should_stop+0x70/0x70
> > [<ffffffff8155c56c>] ret_from_fork+0x7c/0xb0
> > [<ffffffff81079450>] ? kthread_freezable_should_stop+0x70/0x70
> > Code: 38 d1 e0 48 89 df e8 81 38 d1 e0 e9 2f ff ff ff 0f 1f 40 00 48 c7
> > c7 72 8a 46 a0 31 c0 e8 86 6b 0f e1 e9 70 fd ff ff 0f 0b eb fe <0f> 0b
> > eb fe 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 eb f3 0f 0b
> > RIP [<ffffffffa045a4cf>] destroy_client+0x2ff/0x330 [nfsd]
> > RSP <ffff8800256b9d38>
> > ---[ end trace c2d9f251eabc7c2d ]---
> >
> > Signed-off-by: chendt.fnst <[email protected]>
> > Reviewed-by: fanchaoting <[email protected]>
> > ---
> > fs/nfsd/nfs4state.c | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
> > index 13bc266..40b2348 100644
> > --- a/fs/nfsd/nfs4state.c
> > +++ b/fs/nfsd/nfs4state.c
> > @@ -4936,6 +4936,8 @@ nfs4_state_destroy_net(struct net *net)
> > struct nfsd_net *nn = net_generic(net, nfsd_net_id);
> > struct rb_node *node, *tmp;
> >
> > + nfs4_lock_state();
> > +
> > for (i = 0; i < CLIENT_HASH_SIZE; i++) {
> > while (!list_empty(&nn->conf_id_hashtbl[i])) {
> > clp = list_entry(nn->conf_id_hashtbl[i].next, struct nfs4_client,
> > cl_idhash);
> > @@ -4952,6 +4954,7 @@ nfs4_state_destroy_net(struct net *net)
> > destroy_client(clp);
> > }
> >
> > + nfs4_unlock_state();
> > kfree(nn->sessionid_hashtbl);
> > kfree(nn->lockowner_ino_hashtbl);
> > kfree(nn->ownerstr_hashtbl);
> >
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
---end quoted text---
On 2013-11-20 18:40, Christoph Hellwig wrote:
> On Wed, Sep 25, 2013 at 10:58:55AM -0400, Benny Halevy wrote:
>> Chenditang, I see that this patch was never subimtted upstream.
>> Is there anything specific to pnfs that causes this bug?
>
> It's not. I've just reproduced it without pnfs, by shutting down
> the server after running xfstests over a NFSv4.1 mount.
>
This should be covered by this patch:
http://git.linux-nfs.org/?p=bfields/linux.git;a=commitdiff;h=e50a26d
>> The fix itself is completely generic
>> and if so can be back-ported to stable since v3.8
So is e50a26d
Benny
>>
>> Thanks,
>>
>> Benny
>>
>> On 2013-04-24 00:46, chenditang wrote:
>>> mount nfs dir in the client, and then restart the NFS service in MDS,
>>> that will cause oops for client_mutex_owner is NULL in the
>>> destroy_client() function.
>>>
>>> kernel BUG at fs/nfsd/nfs4state.c:1130!
>>> invalid opcode: 0000 [#1] SMP
>>> Modules linked in: nfsd(OF) lockd exportfs nfs_acl auth_rpcgss autofs4
>>> dlm sctp libcrc32c configfs sunrpc be2iscsi iscsi_boot_sysfs bnx2i cnic
>>> uio cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm
>>> ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi
>>> scsi_transport_iscsi dm_mirror dm_region_hash dm_log dm_mod ppdev
>>> parport_pc parport microcode pcspkr i2c_piix4 i2c_core e1000 sg ext4(F)
>>> mbcache(F) jbd2(F) sr_mod(F) cdrom(F) sd_mod(F) crc_t10dif(F)
>>> pata_acpi(F) ata_generic(F) ata_piix(F) ahci(F) libahci(F) [last
>>> unloaded: speedstep_lib]
>>> CPU 0
>>> Pid: 2893, comm: nfsd Tainted: GF O 3.8.0-rc4_fl+ #2 innotek GmbH
>>> VirtualBox/VirtualBox
>>> RIP: 0010:[<ffffffffa045a4cf>] [<ffffffffa045a4cf>]
>>> destroy_client+0x2ff/0x330 [nfsd]
>>> RSP: 0018:ffff8800256b9d38 EFLAGS: 00010203
>>> RAX: 0000000000000010 RBX: ffff880025630000 RCX: 0000000000001440
>>> RDX: 00000000000025fc RSI: 0000000000000082 RDI: 0000000000000246
>>> RBP: ffff8800256b9d88 R08: ffffffff81cdfba0 R09: 0000000000007768
>>> R10: 00000000000001b1 R11: 00000000000001b1 R12: ffff880037988400
>>> R13: ffff88003d58ea80 R14: ffffffff81ab2080 R15: 0000000000000000
>>> FS: 0000000000000000(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000
>>> CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
>>> CR2: 00000000006d39d8 CR3: 00000000255be000 CR4: 00000000000006f0
>>> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>>> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
>>> Process nfsd (pid: 2893, threadinfo ffff8800256b8000, task ffff88003d58ea80)
>>> Stack:
>>> ffff8800256b9d78 ffff88003d51bdc0 ffff8800256b9d58 ffff880037988400
>>> ffffffff81ab2080 ffff880037988400 0000000000000020 ffffffffa04709b0
>>> ffffffff81ab2080 0000000000000000 ffff8800256b9dc8 ffffffffa045a555
>>> Call Trace:
>>> [<ffffffffa045a555>] nfs4_state_destroy_net+0x55/0x120 [nfsd]
>>> [<ffffffffa045a718>] nfs4_state_shutdown_net+0xf8/0x140 [nfsd]
>>> [<ffffffffa04349b0>] ? nfsd_pool_stats_release+0x50/0x50 [nfsd]
>>> [<ffffffffa0434835>] nfsd_shutdown_net+0x35/0x60 [nfsd]
>>> [<ffffffffa04348ad>] nfsd_last_thread+0x4d/0x80 [nfsd]
>>> [<ffffffffa037f3e5>] svc_shutdown_net+0x35/0x40 [sunrpc]
>>> [<ffffffffa0434935>] nfsd_destroy+0x55/0x80 [nfsd]
>>> [<ffffffffa0434ab4>] nfsd+0x104/0x130 [nfsd]
>>> [<ffffffffa04349b0>] ? nfsd_pool_stats_release+0x50/0x50 [nfsd]
>>> [<ffffffff8107951e>] kthread+0xce/0xe0
>>> [<ffffffff81079450>] ? kthread_freezable_should_stop+0x70/0x70
>>> [<ffffffff8155c56c>] ret_from_fork+0x7c/0xb0
>>> [<ffffffff81079450>] ? kthread_freezable_should_stop+0x70/0x70
>>> Code: 38 d1 e0 48 89 df e8 81 38 d1 e0 e9 2f ff ff ff 0f 1f 40 00 48 c7
>>> c7 72 8a 46 a0 31 c0 e8 86 6b 0f e1 e9 70 fd ff ff 0f 0b eb fe <0f> 0b
>>> eb fe 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 eb f3 0f 0b
>>> RIP [<ffffffffa045a4cf>] destroy_client+0x2ff/0x330 [nfsd]
>>> RSP <ffff8800256b9d38>
>>> ---[ end trace c2d9f251eabc7c2d ]---
>>>
>>> Signed-off-by: chendt.fnst <[email protected]>
>>> Reviewed-by: fanchaoting <[email protected]>
>>> ---
>>> fs/nfsd/nfs4state.c | 3 +++
>>> 1 file changed, 3 insertions(+)
>>>
>>> diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
>>> index 13bc266..40b2348 100644
>>> --- a/fs/nfsd/nfs4state.c
>>> +++ b/fs/nfsd/nfs4state.c
>>> @@ -4936,6 +4936,8 @@ nfs4_state_destroy_net(struct net *net)
>>> struct nfsd_net *nn = net_generic(net, nfsd_net_id);
>>> struct rb_node *node, *tmp;
>>>
>>> + nfs4_lock_state();
>>> +
>>> for (i = 0; i < CLIENT_HASH_SIZE; i++) {
>>> while (!list_empty(&nn->conf_id_hashtbl[i])) {
>>> clp = list_entry(nn->conf_id_hashtbl[i].next, struct nfs4_client,
>>> cl_idhash);
>>> @@ -4952,6 +4954,7 @@ nfs4_state_destroy_net(struct net *net)
>>> destroy_client(clp);
>>> }
>>>
>>> + nfs4_unlock_state();
>>> kfree(nn->sessionid_hashtbl);
>>> kfree(nn->lockowner_ino_hashtbl);
>>> kfree(nn->ownerstr_hashtbl);
>>>
>> --
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> ---end quoted text---
>
On Thu, Nov 21, 2013 at 09:00:32AM +0200, Benny Halevy wrote:
> On 2013-11-20 18:40, Christoph Hellwig wrote:
> > On Wed, Sep 25, 2013 at 10:58:55AM -0400, Benny Halevy wrote:
> >> Chenditang, I see that this patch was never subimtted upstream.
> >> Is there anything specific to pnfs that causes this bug?
> >
> > It's not. I've just reproduced it without pnfs, by shutting down
> > the server after running xfstests over a NFSv4.1 mount.
> >
>
> This should be covered by this patch:
> http://git.linux-nfs.org/?p=bfields/linux.git;a=commitdiff;h=e50a26d
Indeed, that fixes it as well.