On Wed, 2023-01-11 at 13:26 +0100, Mike Galbraith wrote:
> On Wed, 2023-01-11 at 03:31 -0800, dai.ngo@xxxxxxxxxx wrote:
> >
> > Can you try:
> >
> > crash7latest> nfsd_net_id
> > nfsd_net_id = $2 = 9 <<===
> > crash7latest> struct net.gen init_net
> > gen = 0xffff97fc17d07d80
> > crash7latest> x /10g 0xffff97fc17d07d80
> > 0xffff97fc17d07d80: 0x000000000000000d 0x0000000000000000
> > 0xffff97fc17d07d90: 0x0000000000000000 0xffff97fc0ac40060
> > 0xffff97fc17d07da0: 0xffff994e7bf87600 0xffff98f731172a20
> > 0xffff97fc17d07db0: 0xffff9844b05d9c00 0xffff9832a6a0add0
> > 0xffff97fc17d07dc0: 0xffff984a4470d740 0xffff984a93eb0600
> > <<=== entry for nfsd_net_id
> > crash7latest> nfsd_net 0xffff984a93eb0600
>
> (monkey see monkey do.. eep eep)
>
> crash> nfsd_net_id
> p: gdb request failed: p nfsd_net_id
> crash> struct net.gen init_net
> gen = 0xffff88810b7b8a00,
> crash> x /10g 0xffff88810b7b8a00
> 0xffff88810b7b8a00: 0x0000000000000010 0x0000000000000000
> 0xffff88810b7b8a10: 0x0000000000000000 0xffff888101563380
> 0xffff88810b7b8a20: 0xffff888101ebd900 0xffff888101ebda00
> 0xffff88810b7b8a30: 0xffff888101f88b80 0xffff8881022056c0
> 0xffff88810b7b8a40: 0xffff888133b79e00 0xffff888110a2ca00
> crash> nfsd_net 0xffff888110a2ca00
> struct nfsd_net {
> cld_net = 0xffff888131c3c000,
> svc_expkey_cache = 0xffff888110a2cc00,
> svc_export_cache = 0xffff888110a2ce00,
> idtoname_cache = 0xffff8881061a8a00,
> nametoid_cache = 0xffff8881061a8c00,
> nfsd4_manager = {
> list = {
> next = 0xffff888141efa000,
> prev = 0xffff888133e6ea00
> },
> block_opens = false
> },
> grace_ended = false,
> boot_time = -131387065447864,
> nfsd_client_dir = 0xffff888110a2ca48,
> reclaim_str_hashtbl = 0xffff88810bed7408,
> reclaim_str_hashtbl_size = 1083333640,
> conf_id_hashtbl = 0x0,
> conf_name_tree = {
> rb_node = 0xffff888140925c00
> },
> unconf_id_hashtbl = 0xffff88810181c800,
> unconf_name_tree = {
> rb_node = 0x200000000
> },
> sessionid_hashtbl = 0x1,
> client_lru = {
> next = 0x0,
> prev = 0x0
> },
> close_lru = {
> next = 0xffff888110a2caa0,
> prev = 0xffff888110a2caa0
> },
> del_recall_lru = {
> next = 0x0,
> prev = 0xffffffffffffffff
> },
> blocked_locks_lru = {
> next = 0x0,
> prev = 0xffff88810a0e0f00
> },
> laundromat_work = {
> work = {
> data = {
> counter = 0
> },
> entry = {
> next = 0x0,
> prev = 0x0
> },
> func = 0x0
> },
> timer = {
> entry = {
> next = 0x0,
> pprev = 0x0
> },
> expires = 520729437059154371,
> function = 0x0,
> flags = 3526430787
> },
> wq = 0x24448948f6314540,
> cpu = 1133332496
> },
> client_lock = {
> {
> rlock = {
> raw_lock = {
> {
> val = {
> counter = 344528932
> },
> {
> locked = 36 '$',
> pending = 24 '\030'
> },
> {
> locked_pending = 6180,
> tail = 5257
> }
> }
> }
> }
> }
> },
> blocked_locks_lock = {
> {
> rlock = {
> raw_lock = {
> {
> val = {
> counter = 1820937252
> },
> {
> locked = 36 '$',
> pending = 76 'L'
> },
> {
> locked_pending = 19492,
> tail = 27785
> }
> }
> }
> }
> }
> },
> rec_file = 0x4808245c89483824,
> in_grace = 137,
> client_tracking_ops = 0xe8df8948005d8b,
> nfsd4_lease = -8266309238763028480,
> nfsd4_grace = 5476377146897729659,
> somebody_reclaimed = 139,
> track_reclaim_completes = 99,
> nr_reclaim_complete = {
> counter = -402096755
> },
> nfsd_net_up = false,
> lockd_up = false,
> writeverf_lock = {
> seqcount = {
> seqcount = {
> sequence = 140872013
> }
> },
> lock = {
> {
> rlock = {
> raw_lock = {
> {
> val = {
> counter = -387479220
> },
> {
> locked = 76 'L',
> pending = 137 '\211'
> },
> {
> locked_pending = 35148,
> tail = 59623
> }
> }
> }
> }
> }
> }
> },
> writeverf = "\000\000\000\000M\211,$",
> max_connections = 612141896,
> clientid_base = 59416,
> clientid_counter = 2336751616,
> clverifier_counter = 1275601988,
> nfsd_serv = 0x1024448b48185889,
> keep_active = 140740940,
> s2s_cp_cl_id = 1223133516,
> s2s_cp_stateids = {
> idr_rt = {
> xa_lock = {
> {
> rlock = {
> raw_lock = {
> {
> val = {
> counter = 15205257
> },
> {
> locked = 137 '\211',
> pending = 3 '\003'
> },
> {
> locked_pending = 905,
> tail = 232
> }
> }
> }
> }
> }
> },
> xa_flags = 1224736768,
> xa_head = 0xf74f6854d241c89
> },
> idr_base = 276532552,
> idr_next = 232
> },
> s2s_cp_lock = {
> {
> rlock = {
> raw_lock = {
> {
> val = {
> counter = 1933134848
> },
> {
> locked = 0 '\000',
> pending = 76 'L'
> },
> {
> locked_pending = 19456,
> tail = 29497
> }
> }
> }
> }
> }
> },
> nfsd_versions = 0x443924048b012404,
> nfsd4_minorversions = 0x2b4820f2424,
> drc_hashtbl = 0x8678d4d107b8d48,
> max_drc_entries = 232,
> maskbits = 1938508800,
> drc_hashsize = 4287187984,
> num_drc_entries = {
> counter = 232
> },
> counter = {{
> lock = {
> raw_lock = {
> {
> val = {
> counter = 931745024
> },
> {
> locked = 0 '\000',
> pending = 77 'M'
> },
> {
> locked_pending = 19712,
> tail = 14217
> }
> }
> }
> },
> count = -8858645092202691189,
> list = {
> next = 0x24648b4cffffff43,
> prev = 0x246c8b4c24148b40
> },
> counters = 0xffffffffa0d0b540 <__this_module>
> }, {
> lock = {
> raw_lock = {
> {
> val = {
> counter = 256
> },
> {
> locked = 0 '\000',
> pending = 1 '\001'
> },
> {
> locked_pending = 256,
> tail = 0
> }
> }
> }
> },
> count = -131387314532352,
> list = {
> next = 0x0,
> prev = 0xffffffffa0c949c0 <svc_udp_ops+1248>
> },
> counters = 0xffffffffa0c67f00 <ip_map_put>
> }},
> longest_chain = 2697366144,
> longest_chain_cachesize = 4294967295,
> nfsd_reply_cache_shrinker = {
> count_objects = 0xffffffffa0c67cd0 <ip_map_request>,
> scan_objects = 0xffffffffa0c68e40 <ip_map_parse>,
Looks like this part of the struct may have been overwritten with
ip_map_cache_template ? Nothing else in here looks recognizable, so I
have to wonder if you actually have the correct nfsd_net pointer here.
> batch = -1597606560,
> seeks = 0,
> flags = 0,
> list = {
> next = 0xffffffffa0c67350 <ip_map_alloc>,
> prev = 0x0
> },
> nr_deferred = 0xffffffffa0c68a00 <ip_map_match>
> },
> nfsd_ssc_lock = {
> {
> rlock = {
> raw_lock = {
> {
> val = {
> counter = -1597603936
> },
> {
> locked = 160 '\240',
> pending = 127 '\177'
> },
> {
> locked_pending = 32672,
> tail = 41158
> }
> }
> }
> }
> }
> },
> nfsd_ssc_mount_list = {
> next = 0xffffffffa0c68b10 <update>,
> prev = 0x49
> },
> nfsd_ssc_waitq = {
> lock = {
> {
> rlock = {
> raw_lock = {
> {
> val = {
> counter = -1596979232
> },
> {
> locked = 224 '\340',
> pending = 7 '\a'
> },
> {
> locked_pending = 2016,
> tail = 41168
> }
> }
> }
> }
> }
> },
> head = {
> next = 0xffff888110a2ce88,
> prev = 0xc2
> }
> },
> nfsd_name = "\001\000\000\000\000\000\000\000\200\t\021D\201\210\377\377\200\t\021D\201\210\377\377\001\000\000\000\000\000\000\000\032\000\000\000\000\000\000\000\377\377\377\377\377\377\377\377\000\301\303\061\201\210\377\377@$\234\203\377\377\377\377",
> fcache_disposal = 0x0,
> siphash_key = {
> key = {0, 0}
> },
> nfs4_client_count = {
> counter = 451
> },
> nfs4_max_clients = 122552490,
> nfsd_courtesy_clients = {
> counter = 0
> },
> nfsd_client_shrinker = {
> count_objects = 0xe8000002a0a3894c,
> scan_objects = 0x98b3894400000000,
> batch = 5483261796049485826,
> seeks = 15267721,
> flags = 1275068416,
> list = {
> next = 0x18247c8d4918658b,
> prev = 0x7c8b4900000000e8
> },
> nr_deferred = 0x4800000000e81824
> },
> nfsd_shrinker_work = {
> work = {
> data = {
> counter = -8554306017173128307
> },
> entry = {
> next = 0x894c00000000e8c4,
> prev = 0xf7894c00000268a3
> },
> func = 0x6d8b4800000000e8
> },
> timer = {
> entry = {
> next = 0x270bb8d4818,
> pprev = 0xbb8d4800000000e8
> },
> expires = 8118733695596102332,
> function = 0xe8000002,
> flags = 45908935
> },
> wq = 0x147424e783410000,
> cpu = 553616193
> }
> }
> crash>
>
--
Jeff Layton <jlayton@xxxxxxxxxx>
