Hello,
after upgrading from stable 6.1.63 to stable 6.6.3 our nfs-server logged
a WARNING and then more and more clients hanged:
Dec 04 14:59:25 engel kernel: ------------[ cut here ]------------
Dec 04 14:59:25 engel kernel: WARNING: CPU: 17 PID: 8431 at
fs/nfsd/nfs4state.c:4919 nfsd_break_deleg_cb+0x174/0x190 [nfsd]
Dec 04 14:59:25 engel kernel: Modules linked in: cts rpcsec_gss_krb5 msr
8021q garp stp mrp llc binfmt_misc intel_rapl_msr intel_rapl_common
sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kv>
Dec 04 14:59:25 engel kernel: enclosure sd_mod usbhid t10_pi hid
crc64_rocksoft crc64 crc_t10dif crct10dif_generic ixgbe ahci xfrm_algo
xhci_pci libahci dca mdio_devres mpt3sas ehci_pci crct10dif_p>
Dec 04 14:59:25 engel kernel: CPU: 17 PID: 8431 Comm: nfsd Not tainted
6.6.3-debian64.all+1.2 #1
Dec 04 14:59:25 engel kernel: Hardware name: Supermicro X10DRi/X10DRI-T,
BIOS 1.1a 10/16/2015
Dec 04 14:59:25 engel kernel: RIP: 0010:nfsd_break_deleg_cb+0x174/0x190
[nfsd]
Dec 04 14:59:25 engel kernel: Code: 02 8c a4 c2 e9 ff fe ff ff 48 89 df
be 01 00 00 00 e8 70 7c ed c2 48 8d bb 98 00 00 00 e8 b4 0e 01 00 84 c0
0f 85 2e ff ff ff <0f> 0b e9 27 ff ff ff be 02 00 00 0>
Dec 04 14:59:25 engel kernel: RSP: 0018:ffffbd57227c7a98 EFLAGS:
00010246
Dec 04 14:59:25 engel kernel: RAX: 0000000000000000 RBX:
ffff94a77356e200 RCX: 0000000000000000
Dec 04 14:59:25 engel kernel: RDX: ffff94a77356e2c8 RSI:
ffff94b78cf58000 RDI: 0000000000002000
Dec 04 14:59:25 engel kernel: RBP: ffff94a0392b3a34 R08:
ffffbd57227c7a80 R09: 0000000000000000
Dec 04 14:59:25 engel kernel: R10: ffff94a05f4a9440 R11:
0000000000000000 R12: ffff94b8e3995b00
Dec 04 14:59:25 engel kernel: R13: ffff94a0392b3a20 R14:
ffff94b8e3995b00 R15: 000000010eb733cd
Dec 04 14:59:25 engel kernel: FS: 0000000000000000(0000)
GS:ffff94b71fcc0000(0000) knlGS:0000000000000000
Dec 04 14:59:25 engel kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Dec 04 14:59:25 engel kernel: CR2: 00007f9ef8554000 CR3:
000000295e020003 CR4: 00000000001706e0
Dec 04 14:59:25 engel kernel: Call Trace:
Dec 04 14:59:25 engel kernel: <TASK>
Dec 04 14:59:25 engel kernel: ? nfsd_break_deleg_cb+0x174/0x190 [nfsd]
Dec 04 14:59:25 engel kernel: ? __warn+0x81/0x130
Dec 04 14:59:25 engel kernel: ? nfsd_break_deleg_cb+0x174/0x190 [nfsd]
Dec 04 14:59:25 engel kernel: ? report_bug+0x171/0x1a0
Dec 04 14:59:25 engel kernel: ? handle_bug+0x3c/0x80
Dec 04 14:59:25 engel kernel: ? exc_invalid_op+0x17/0x70
Dec 04 14:59:25 engel kernel: ? asm_exc_invalid_op+0x1a/0x20
Dec 04 14:59:25 engel kernel: ? nfsd_break_deleg_cb+0x174/0x190 [nfsd]
Dec 04 14:59:25 engel kernel: ? nfsd_break_deleg_cb+0x9a/0x190 [nfsd]
Dec 04 14:59:25 engel kernel: __break_lease+0x25c/0x720
Dec 04 14:59:25 engel kernel: __nfsd_open.isra.0+0xa9/0x1a0 [nfsd]
Dec 04 14:59:25 engel kernel: nfsd_file_do_acquire+0x4ca/0xc50 [nfsd]
Dec 04 14:59:25 engel kernel: nfs4_get_vfs_file+0x34c/0x3b0 [nfsd]
Dec 04 14:59:25 engel kernel: nfsd4_process_open2+0x42c/0x15d0 [nfsd]
Dec 04 14:59:25 engel kernel: ? nfsd_permission+0x63/0x100 [nfsd]
Dec 04 14:59:25 engel kernel: ? fh_verify+0x42e/0x720 [nfsd]
Dec 04 14:59:25 engel kernel: nfsd4_open+0x64a/0xc40 [nfsd]
Dec 04 14:59:25 engel kernel: ? nfsd4_encode_operation+0xa7/0x2b0
[nfsd]
Dec 04 14:59:25 engel kernel: nfsd4_proc_compound+0x351/0x670 [nfsd]
Dec 04 14:59:25 engel kernel: ? __pfx_nfsd+0x10/0x10 [nfsd]
Dec 04 14:59:25 engel kernel: nfsd_dispatch+0x7c/0x1b0 [nfsd]
Dec 04 14:59:25 engel kernel: svc_process_common+0x431/0x6e0 [sunrpc]
Dec 04 14:59:25 engel kernel: ? __pfx_nfsd_dispatch+0x10/0x10 [nfsd]
Dec 04 14:59:25 engel kernel: ? __pfx_nfsd+0x10/0x10 [nfsd]
Dec 04 14:59:25 engel kernel: svc_process+0x131/0x180 [sunrpc]
Dec 04 14:59:25 engel kernel: nfsd+0x84/0xd0 [nfsd]
Dec 04 14:59:25 engel kernel: kthread+0xe5/0x120
Dec 04 14:59:25 engel kernel: ? __pfx_kthread+0x10/0x10
Dec 04 14:59:25 engel kernel: ret_from_fork+0x31/0x50
Dec 04 14:59:25 engel kernel: ? __pfx_kthread+0x10/0x10
Dec 04 14:59:25 engel kernel: ret_from_fork_asm+0x1b/0x30
Dec 04 14:59:25 engel kernel: </TASK>
Dec 04 14:59:25 engel kernel: ---[ end trace 0000000000000000 ]---
6.1. did not show such a problem.
Both are vanilla stable kernels (self-built).
Regards,
--
Wolfgang Walter
Studierendenwerk München Oberbayern
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