On Fri, 2007-07-27 at 19:58 +0200, Marc Dietrich wrote: > Hi again, > > Am Freitag, 27. Juli 2007 16:58 schrieb Satyam Sharma: > > On 7/27/07, Marc Dietrich <[EMAIL PROTECTED]> wrote: > > > Hi, > > > > > > (...) > > > > > > me too, my server has 2.6.18-? (openSUSE 10.2). On the client > > > (2.6.23-rc1-mm1), I also see (shortly before the hang) > > > > > > Jul 26 13:09:19 fb07-iapwap2 kernel: ================================= > > > Jul 26 13:09:19 fb07-iapwap2 kernel: [ INFO: inconsistent lock state ] > > > Jul 26 13:09:19 fb07-iapwap2 kernel: 2.6.23-rc1-mm1 #1 > > > Jul 26 13:09:19 fb07-iapwap2 kernel: --------------------------------- > > > Jul 26 13:09:19 fb07-iapwap2 kernel: inconsistent {softirq-on-W} -> > > > (cut away ugly dump) > > > > Doesn't appear related ... could you rebuild with CONFIG_FRAME_POINTER > > and test + resend the above log? The trace up there looks quite ugly. > > this seems to be better ... > > Jul 27 19:43:33 fb07-iapwap2 kernel: ================================= > Jul 27 19:43:33 fb07-iapwap2 kernel: [ INFO: inconsistent lock state ] > Jul 27 19:43:33 fb07-iapwap2 kernel: 2.6.23-rc1-mm1 #1 > Jul 27 19:43:33 fb07-iapwap2 kernel: --------------------------------- > Jul 27 19:43:33 fb07-iapwap2 kernel: inconsistent {softirq-on-W} -> > {in-softirq-W} usage. > Jul 27 19:43:33 fb07-iapwap2 kernel: kdm/5909 [HC0[0]:SC1[1]:HE1:SE0] takes: > Jul 27 19:43:33 fb07-iapwap2 kernel: (rpc_credcache_lock){-+..}, at: > [<c01dba67>] _atomic_dec_and_lock+0x17/0x60 > Jul 27 19:43:33 fb07-iapwap2 kernel: {softirq-on-W} state was registered at: > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c013e800>] > __lock_acquire+0x650/0x1030 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c013f241>] lock_acquire+0x61/0x80 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c02db8dc>] _spin_lock+0x2c/0x40 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c01dba67>] > _atomic_dec_and_lock+0x17/0x60 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dceca5fd>] put_rpccred+0x5d/0x100 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dceca6c1>] > rpcauth_unbindcred+0x21/0x60 [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcec8fd4>] rpc_put_task+0x44/0xa0 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcec3fe0>] rpc_call_sync+0x30/0x40 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dced172b>] rpcb_register+0xdb/0x180 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcecb5b3>] svc_register+0x93/0x160 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcecbebe>] __svc_create+0x1ee/0x220 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcecc053>] svc_create+0x13/0x20 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcf62752>] > nfs_callback_up+0x82/0x120 > [nfs] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcf3df36>] > nfs_get_client+0x176/0x390 > [nfs] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcf3e181>] > nfs4_set_client+0x31/0x190 > [nfs] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcf3e983>] > nfs4_create_server+0x63/0x3b0 [nfs] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcf47426>] nfs4_get_sb+0x346/0x5b0 > [nfs] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c017aa74>] vfs_kern_mount+0x94/0x110 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c01900c2>] do_mount+0x1f2/0x7d0 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c0190706>] sys_mount+0x66/0xa0 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c01040de>] syscall_call+0x7/0xb > Jul 27 19:43:33 fb07-iapwap2 kernel: [<ffffffff>] 0xffffffff > Jul 27 19:43:33 fb07-iapwap2 kernel: irq event stamp: 4916 > Jul 27 19:43:33 fb07-iapwap2 kernel: hardirqs last enabled at (4916): > [<c017518a>] kmem_cache_free+0x8a/0xc0 > Jul 27 19:43:33 fb07-iapwap2 kernel: hardirqs last disabled at (4915): > [<c0175152>] kmem_cache_free+0x52/0xc0 > Jul 27 19:43:33 fb07-iapwap2 kernel: softirqs last enabled at (4888): > [<dcec9ff1>] rpc_wake_up_next+0x81/0x180 [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: softirqs last disabled at (4905): > [<c01241e7>] do_softirq+0x47/0x50 > Jul 27 19:43:33 fb07-iapwap2 kernel: > Jul 27 19:43:33 fb07-iapwap2 kernel: other info that might help us debug this: > Jul 27 19:43:33 fb07-iapwap2 kernel: 1 lock held by kdm/5909: > Jul 27 19:43:33 fb07-iapwap2 kernel: #0: (&inode->i_mutex/1){--..}, at: > [<c0182efd>] do_unlinkat+0x7d/0x140 > Jul 27 19:43:33 fb07-iapwap2 kernel: > Jul 27 19:43:33 fb07-iapwap2 kernel: stack backtrace: > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c010506a>] > show_trace_log_lvl+0x1a/0x30 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c0105c92>] show_trace+0x12/0x20 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c0105da5>] dump_stack+0x15/0x20 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c013cc53>] print_usage_bug+0x153/0x160 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c013d849>] mark_lock+0x449/0x620 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c013e7b4>] __lock_acquire+0x604/0x1030 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c013f241>] lock_acquire+0x61/0x80 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c02db8dc>] _spin_lock+0x2c/0x40 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c01dba67>] > _atomic_dec_and_lock+0x17/0x60 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dceca5fd>] put_rpccred+0x5d/0x100 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcf60fb3>] > nfs_free_delegation_callback+0x13/0x20 [nfs] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c012fa3a>] > __rcu_process_callbacks+0x6a/0x1c0 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c012fba2>] > rcu_process_callbacks+0x12/0x30 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c0124228>] tasklet_action+0x38/0x80 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c0124135>] __do_softirq+0x55/0xc0 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c01241e7>] do_softirq+0x47/0x50 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c0124615>] irq_exit+0x35/0x40 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c0112463>] > smp_apic_timer_interrupt+0x43/0x80 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c0104b0f>] > apic_timer_interrupt+0x33/0x38 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcecab53>] > rpcauth_lookup_credcache+0x83/0x1c0 [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcecb1a8>] unx_lookup_cred+0x8/0x10 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dceca8fe>] rpcauth_bindcred+0x5e/0xe0 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcec3e87>] rpc_call_setup+0x57/0x60 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcec3edb>] rpc_do_run_task+0x4b/0xb0 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcec3fce>] rpc_call_sync+0x1e/0x40 > [sunrpc] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcf53cba>] > _nfs4_proc_lookupfh+0x6a/0xb0 [nfs] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcf55b89>] > _nfs4_proc_lookup+0x49/0x1d0 [nfs] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcf55d42>] nfs4_proc_lookup+0x32/0x60 > [nfs] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcf3fe69>] nfs_lookup+0xa9/0x260 [nfs] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<dcf4226c>] > nfs_atomic_lookup+0x10c/0x180 [nfs] > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c0180190>] lookup_hash+0x90/0xb0 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c0182f05>] do_unlinkat+0x85/0x140 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c0182fd0>] sys_unlink+0x10/0x20 > Jul 27 19:43:33 fb07-iapwap2 kernel: [<c01040de>] syscall_call+0x7/0xb > Jul 27 19:43:33 fb07-iapwap2 kernel: ======================= > > this kernel is 2.6.23-rc1-mm1 with Trond's fix from this thread and this one. > http://marc.info/?l=linux-kernel&m=118546628202419&w=2. > > Problem (hang) is easy reproduceable here by just launching kde and open > konsole.
That is very odd. I suspect the memory shrinker, but am at a loss to explain why that would be called from a softirq context. Could you please see if you can reproduce the above problem with 2.6.23-rc1 + the 4 patches? Cheers Trond - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/