> On Nov 8, 2018, at 4:44 PM, J. Bruce Fields <bfields@xxxxxxxxxxxx> wrote: > > Since -rc1 my regression tests crash my client. Is this a known > problem? I'll investigate some more, I haven't even looked at the code > yet or checked which test exactly is hitting this. > > --b. > > [ 164.109570] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 > [ 164.111207] PGD 0 P4D 0 > [ 164.111528] Oops: 0000 [#1] PREEMPT SMP PTI > [ 164.112303] CPU: 2 PID: 2947 Comm: kworker/u8:5 Not tainted 4.20.0-rc1-13223-gafb6d1c474ef #1898 > [ 164.113487] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20180531_142017-buildhw-08.phx2.fedoraproject.org-1.fc28 04/01/2014 > [ 164.115301] Workqueue: rpciod rpc_async_schedule [sunrpc] > [ 164.115920] RIP: 0010:rpcauth_lookup_credcache+0x3d/0x450 [sunrpc] > [ 164.116700] Code: 89 f5 41 54 41 89 d4 53 48 83 ec 38 89 4d b0 4c 8b 7f 20 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 48 8d 45 c0 48 89 45 c8 <41> 8b 77 08 48 89 45 c0 48 8b 47 10 4c 89 ef 48 8b 40 28 e8 cb d2 > [ 164.119299] RSP: 0018:ffffc90001ee3cf0 EFLAGS: 00010246 > [ 164.119872] RAX: ffffc90001ee3d10 RBX: ffff88007cc18180 RCX: 0000000000600040 > [ 164.120800] RDX: 0000000000000001 RSI: ffffc90001ee3d60 RDI: ffff88007cafb198 > [ 164.121643] RBP: ffffc90001ee3d50 R08: 0000000000000000 R09: 0000000000000000 > [ 164.122464] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 > [ 164.123373] R13: ffffc90001ee3d60 R14: ffff88007cafb198 R15: 0000000000000000 > [ 164.124296] FS: 0000000000000000(0000) GS:ffff88007fd00000(0000) knlGS:0000000000000000 > [ 164.125322] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 164.126006] CR2: 0000000000000008 CR3: 000000007829c003 CR4: 00000000001606e0 > [ 164.126860] Call Trace: > [ 164.127045] ? call_retry_reserve+0x30/0x30 [sunrpc] > [ 164.127622] rpcauth_lookupcred+0xa0/0xc0 [sunrpc] > [ 164.128200] rpcauth_refreshcred+0x15f/0x170 [sunrpc] > [ 164.128807] __rpc_execute+0xa9/0x460 [sunrpc] > [ 164.129281] process_one_work+0x227/0x630 > [ 164.129684] worker_thread+0x3c/0x390 > [ 164.130062] ? process_one_work+0x630/0x630 > [ 164.130609] kthread+0x11d/0x140 > [ 164.130936] ? kthread_park+0x80/0x80 > [ 164.131339] ret_from_fork+0x3a/0x50 > [ 164.131676] Modules linked in: rpcsec_gss_krb5 nfsv4 nfs lockd grace auth_rpcgss sunrpc > [ 164.132719] CR2: 0000000000000008 > [ 164.133050] ---[ end trace b4028a6781a696ad ]--- > I just encountered this repeatedly with cthon04 general tests. MNTOPTIONS="rw,proto=tcp,vers=4.1,sec=sys" -- Chuck Lever chucklever@xxxxxxxxx
