Hello, we use KRB5 for NFSv4 authentication on computing cluster. From time to time, NFSv4 mount stops to respond as rpciod kernel process gets stuck. I got the following trace from rpciod. Is this by any chance fixed in any newer kernel? kernel: [373065.987024] rpciod/0 D 0000000000000000 0 4393 2 0x00000000 kernel: [373065.987036] ffffffff8145d1f0 0000000000000046 0000000000000000 ffff88087cc630c0 kernel: [373065.987083] 000000000000f000 0000000000017020 000000000000f9e0 ffff88a7fac2bfd8 kernel: [373065.987129] 0000000000015780 0000000000015780 ffff88a7fc3aa350 ffff88a7fc3aa648 kernel: [373065.987176] Call Trace: kernel: [373065.987207] [<ffffffff810b439d>] ? sync_page+0x0/0x46 kernel: [373065.987229] [<ffffffff812fb4fa>] ? io_schedule+0x73/0xb7 kernel: [373065.987250] [<ffffffff810b43de>] ? sync_page+0x41/0x46 kernel: [373065.987269] [<ffffffff812fba07>] ? __wait_on_bit+0x41/0x70 kernel: [373065.987286] [<ffffffff810b4562>] ? wait_on_page_bit+0x6b/0x71 kernel: [373065.987305] [<ffffffff81064fc0>] ? wake_bit_function+0x0/0x23 kernel: [373065.987330] [<ffffffff810be302>] ? shrink_page_list+0x14e/0x623 kernel: [373065.987351] [<ffffffff8105a969>] ? del_timer_sync+0xc/0x16 kernel: [373065.987374] [<ffffffff8101657d>] ? read_tsc+0xa/0x20 kernel: [373065.987392] [<ffffffff812fb85c>] ? schedule_timeout+0xad/0xdd kernel: [373065.987410] [<ffffffff8106c503>] ? ktime_get_ts+0x68/0xb2 kernel: [373065.987433] [<ffffffff81099ec6>] ? delayacct_end+0x74/0x7f kernel: [373065.987451] [<ffffffff810bd6f3>] ? isolate_pages_global+0x1a0/0x20f kernel: [373065.987468] [<ffffffff81065091>] ? finish_wait+0x35/0x60 kernel: [373065.987486] [<ffffffff81064f92>] ? autoremove_wake_function+0x0/0x2e kernel: [373065.987503] [<ffffffff810befd8>] ? shrink_list+0x528/0x767 kernel: [373065.987565] [<ffffffffa0062480>] ? netxen_nic_update_cmd_producer+0x18/0x49 [netxen_nic] kernel: [373065.987571] [<ffffffff810bf497>] ? shrink_zone+0x280/0x342 kernel: [373065.987578] [<ffffffff8125ae1a>] ? load_pointer+0x1e/0xa1 kernel: [373065.987582] [<ffffffff810bf922>] ? zone_reclaim+0x276/0x357 kernel: [373065.987585] [<ffffffff810bd553>] ? isolate_pages_global+0x0/0x20f kernel: [373065.987588] [<ffffffff810b8743>] ? zone_watermark_ok+0x20/0xb1 kernel: [373065.987594] [<ffffffff810c78a0>] ? zone_statistics+0x3c/0x5d kernel: [373065.987597] [<ffffffff810b9a6c>] ? get_page_from_freelist+0x1ff/0x760 kernel: [373065.987601] [<ffffffff810ba334>] ? __alloc_pages_nodemask+0x11c/0x5fc kernel: [373065.987604] [<ffffffff810ba334>] ? __alloc_pages_nodemask+0x11c/0x5fc kernel: [373065.987611] [<ffffffff812879a0>] ? tcp_current_mss+0x3f/0x5a kernel: [373065.987614] [<ffffffff8127fbf6>] ? tcp_sendmsg+0x78b/0x87f kernel: [373065.987623] [<ffffffff810e6b0d>] ? new_slab+0x42/0x1ca kernel: [373065.987625] [<ffffffff810e6e85>] ? __slab_alloc+0x1f0/0x39b kernel: [373065.987632] [<ffffffff81172447>] ? crypto_init_shash_ops+0x68/0xc8 kernel: [373065.987635] [<ffffffff810e8167>] ? __kmalloc+0xf1/0x141 kernel: [373065.987638] [<ffffffff81172447>] ? crypto_init_shash_ops+0x68/0xc8 kernel: [373065.987640] [<ffffffff81172447>] ? crypto_init_shash_ops+0x68/0xc8 kernel: [373065.987647] [<ffffffff8116d565>] ? __crypto_alloc_tfm+0x7f/0xfe kernel: [373065.987649] [<ffffffff8116dbc9>] ? crypto_alloc_base+0x48/0x83 kernel: [373065.987654] [<ffffffffa04ea316>] ? make_checksum+0x2e/0xee [rpcsec_gss_krb5] kernel: [373065.987658] [<ffffffff812fc819>] ? _spin_lock_bh+0x9/0x25 kernel: [373065.987665] [<ffffffff812438a2>] ? release_sock+0x13/0xa0 kernel: [373065.987668] [<ffffffffa04e94bf>] ? gss_get_mic_kerberos+0xd7/0x188 [rpcsec_gss_krb5] kernel: [373065.987674] [<ffffffffa0408f6e>] ? gss_marshal+0x128/0x18d [auth_rpcgss] kernel: [373065.987691] [<ffffffffa03cabb8>] ? call_transmit+0x16c/0x246 [sunrpc] kernel: [373065.987698] [<ffffffffa03d135b>] ? __rpc_execute+0x71/0x241 [sunrpc] kernel: [373065.987704] [<ffffffff8106195f>] ? worker_thread+0x188/0x21d kernel: [373065.987710] [<ffffffffa03d15b8>] ? rpc_async_schedule+0x0/0xc [sunrpc] kernel: [373065.987713] [<ffffffff81064f92>] ? autoremove_wake_function+0x0/0x2e kernel: [373065.987715] [<ffffffff810617d7>] ? worker_thread+0x0/0x21d kernel: [373065.987718] [<ffffffff81064cc5>] ? kthread+0x79/0x81 kernel: [373065.987721] [<ffffffff81011baa>] ? child_rip+0xa/0x20 kernel: [373065.987723] [<ffffffff81064c4c>] ? kthread+0x0/0x81 kernel: [373065.987726] [<ffffffff81011ba0>] ? child_rip+0x0/0x20 -- Lukáš Hejtmánek -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
