Hi all, As far as I can see, the nfs4 jessie clients caused serious problems on the serving nfs server (which is a wheezy system), leading to an nfsd kernel crash on the wheezy system.
FYI: the server is an up-to-date wheezy system (kernel 3.2.60-1+deb7u3). The dumps got away as soon as I unmounted the nfs4 clients that are running jessie; those jessie systems are also up-to-date (kernel 3.14.15-2 (2014-08-09)). This took down our production environment. I fixed it by disabling all jessie nfs v4 clients. Regards, Piet Here is a set of kernel dumps from the nfs server system: [ 270.413977] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [ 270.414297] IP: [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 270.414516] PGD 0 [ 270.414709] Oops: 0000 [#3] SMP [ 270.414989] CPU 1 [ 270.415078] Modules linked in: parport_pc ppdev lp parport binfmt_misc nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc loop snd_pcm snd_page_alloc snd_timer coretemp crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 aes_generic snd iTCO_wdt iTCO_vendor_support soundcore cryptd joydev evdev pcspkr sb_edac edac_core dcdbas shpchp wmi acpi_power_meter processor button thermal_sys xfs usbhid hid usb_storage sg sd_mod crc_t10dif igb ehci_hcd i2c_algo_bit i2c_core usbcore ixgbe usb_common dca megaraid_sas scsi_mod mdio [last unloaded: scsi_wait_scan] [ 270.420471] [ 270.420583] Pid: 3504, comm: nfsd Tainted: G D W 3.2.0-4-amd64 #1 Debian 3.2.60-1+deb7u3 Dell Inc. PowerEdge R720xd/0C4Y3R [ 270.420989] RIP: 0010:[<ffffffffa0381311>] [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 270.421229] RSP: 0018:ffff880fe48a7d30 EFLAGS: 00010286 [ 270.421347] RAX: 0000000000004000 RBX: ffff880fbac5ecc0 RCX: 0000000000000024 [ 270.421471] RDX: ffffffffa039d6fb RSI: 0000000000000000 RDI: ffff880fbac5ecc0 [ 270.421595] RBP: ffff880fbac5ecc0 R08: 0000000000000000 R09: 0000000000000000 [ 270.421719] R10: ffff880fbe8f6de0 R11: ffff880fbe8f6de0 R12: ffffffffa039d6fb [ 270.421842] R13: 0000000000000000 R14: 0000000000000440 R15: ffff880fe4f89180 [ 270.421967] FS: 0000000000000000(0000) GS:ffff88102f220000(0000) knlGS:0000000000000000 [ 270.422115] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 270.422241] CR2: 0000000000000010 CR3: 0000000001605000 CR4: 00000000000406e0 [ 270.422367] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 270.422491] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 270.422616] Process nfsd (pid: 3504, threadinfo ffff880fe48a6000, task ffff880fecb42180) [ 270.422762] Stack: [ 270.422872] 0000000000000451 ffff880f00000000 ffff880fbac5ecc0 ffff880fe076b1c0 [ 270.423351] 0000000000000000 0000000000000000 0000000000000440 ffffffffa0381bf4 [ 270.423829] ffff880f9f9e4600 0000000000000000 ffff880fe4f89040 ffff880fe4f8c000 [ 270.424306] Call Trace: [ 270.424428] [<ffffffffa0381bf4>] ? nfsd4_set_nfs4_acl+0xb4/0xe6 [nfsd] [ 270.424559] [<ffffffffa038b637>] ? nfsd4_setattr+0xae/0xe8 [nfsd] [ 270.424687] [<ffffffffa038a8d6>] ? nfsd4_proc_compound+0x251/0x41d [nfsd] [ 270.424816] [<ffffffffa037e7cd>] ? nfsd_dispatch+0xd7/0x1ba [nfsd] [ 270.424950] [<ffffffffa030ec3f>] ? svc_process_common+0x2c3/0x4c4 [sunrpc] [ 270.425078] [<ffffffff8103f6e2>] ? try_to_wake_up+0x197/0x197 [ 270.425207] [<ffffffffa030f050>] ? svc_process+0x110/0x12c [sunrpc] [ 270.425332] [<ffffffffa037e0e3>] ? nfsd+0xe3/0x127 [nfsd] [ 270.425455] [<ffffffffa037e000>] ? 0xffffffffa037dfff [ 270.425577] [<ffffffff8105f701>] ? kthread+0x76/0x7e [ 270.425702] [<ffffffff813575b4>] ? kernel_thread_helper+0x4/0x10 [ 270.425826] [<ffffffff8105f68b>] ? kthread_worker_fn+0x139/0x139 [ 270.425945] [<ffffffff813575b0>] ? gs_change+0x13/0x13 [ 270.426063] Code: 48 8b 80 20 01 00 00 c6 87 9e 00 00 00 01 48 89 87 c8 00 00 00 c3 41 56 41 55 49 89 f5 41 54 49 89 d4 55 48 89 fd 53 48 83 ec 10 <48> 63 46 10 be d0 00 00 00 4c 8d 34 c5 04 00 00 00 4c 89 f7 e8 [ 270.431678] RIP [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 270.431889] RSP <ffff880fe48a7d30> [ 270.432003] CR2: 0000000000000010 [ 270.432121] BUG: unable to handle kernel [ 270.432142] ---[ end trace 5c2d08be1ab6f7cb ]--- [ 270.432437] NULL pointer dereference at 0000000000000010 [ 270.432639] IP: [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 270.432853] PGD 0 [ 270.432945] Oops: 0000 [#4] SMP [ 270.432948] CPU 0 [ 270.432949] Modules linked in: parport_pc ppdev lp parport binfmt_misc nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc loop snd_pcm snd_page_alloc snd_timer coretemp crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 aes_generic snd iTCO_wdt iTCO_vendor_support soundcore cryptd joydev evdev pcspkr sb_edac edac_core dcdbas shpchp wmi acpi_power_meter processor button thermal_sys xfs usbhid hid usb_storage sg sd_mod crc_t10dif igb ehci_hcd i2c_algo_bit i2c_core usbcore ixgbe usb_common dca megaraid_sas scsi_mod mdio [last unloaded: scsi_wait_scan] [ 270.432985] [ 270.432989] Pid: 3496, comm: nfsd Tainted: G D W 3.2.0-4-amd64 #1 Debian 3.2.60-1+deb7u3 Dell Inc. PowerEdge R720xd/0C4Y3R [ 270.432995] RIP: 0010:[<ffffffffa0381311>] [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 270.433006] RSP: 0018:ffff880fed469d30 EFLAGS: 00010286 [ 270.433009] RAX: 0000000000004000 RBX: ffff880fbac5ec00 RCX: 0000000000000024 [ 270.433012] RDX: ffffffffa039d6fb RSI: 0000000000000000 RDI: ffff880fbac5ec00 [ 270.433015] RBP: ffff880fbac5ec00 R08: 0000000000000000 R09: 0000000000000000 [ 270.433018] R10: ffff880fbe8f6de0 R11: ffff880fbe8f6de0 R12: ffffffffa039d6fb [ 270.433021] R13: 0000000000000000 R14: 0000000000000440 R15: ffff880fec2aa180 [ 270.433025] FS: 0000000000000000(0000) GS:ffff88102f200000(0000) knlGS:0000000000000000 [ 270.433029] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 270.433032] CR2: 0000000000000010 CR3: 0000000001605000 CR4: 00000000000406f0 [ 270.433035] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 270.433038] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 270.433042] Process nfsd (pid: 3496, threadinfo ffff880fed468000, task ffff880fee855740) [ 270.433044] Stack: [ 270.433046] 0000000000000451 ffff880f00000000 ffff880fbac5ec00 ffff880fbac42240 [ 270.433051] 0000000000000000 0000000000000000 0000000000000440 ffffffffa0381bf4 [ 270.433056] ffff880fc3fc06c0 0000000000000000 ffff880fec2aa040 ffff880fedf50000 [ 270.433062] Call Trace: [ 270.433072] [<ffffffffa0381bf4>] ? nfsd4_set_nfs4_acl+0xb4/0xe6 [nfsd] [ 270.433084] [<ffffffffa038b637>] ? nfsd4_setattr+0xae/0xe8 [nfsd] [ 270.433094] [<ffffffffa038a8d6>] ? nfsd4_proc_compound+0x251/0x41d [nfsd] [ 270.433103] [<ffffffffa037e7cd>] ? nfsd_dispatch+0xd7/0x1ba [nfsd] [ 270.433116] [<ffffffffa030ec3f>] ? svc_process_common+0x2c3/0x4c4 [sunrpc] [ 270.433121] [<ffffffff8103f6e2>] ? try_to_wake_up+0x197/0x197 [ 270.433132] [<ffffffffa030f050>] ? svc_process+0x110/0x12c [sunrpc] [ 270.433139] [<ffffffffa037e0e3>] ? nfsd+0xe3/0x127 [nfsd] [ 270.433144] [<ffffffffa037e000>] ? 0xffffffffa037dfff [ 270.433150] [<ffffffff8105f701>] ? kthread+0x76/0x7e [ 270.433155] [<ffffffff813575b4>] ? kernel_thread_helper+0x4/0x10 [ 270.433161] [<ffffffff8105f68b>] ? kthread_worker_fn+0x139/0x139 [ 270.433166] [<ffffffff813575b0>] ? gs_change+0x13/0x13 [ 270.433168] Code: 48 8b 80 20 01 00 00 c6 87 9e 00 00 00 01 48 89 87 c8 00 00 00 c3 41 56 41 55 49 89 f5 41 54 49 89 d4 55 48 89 fd 53 48 83 ec 10 <48> 63 46 10 be d0 00 00 00 4c 8d 34 c5 04 00 00 00 4c 89 f7 e8 [ 270.433197] RIP [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 270.433206] RSP <ffff880fed469d30> [ 270.433208] CR2: 0000000000000010 [ 270.433295] ---[ end trace 5c2d08be1ab6f7cc ]--- [ 450.369988] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [ 450.370305] IP: [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 450.370520] PGD 0 [ 450.370714] Oops: 0000 [#5] SMP [ 450.370994] CPU 1 [ 450.371082] Modules linked in: parport_pc ppdev lp parport binfmt_misc nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc loop snd_pcm snd_page_alloc snd_timer coretemp crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 aes_generic snd iTCO_wdt iTCO_vendor_support soundcore cryptd joydev evdev pcspkr sb_edac edac_core dcdbas shpchp wmi acpi_power_meter processor button thermal_sys xfs usbhid hid usb_storage sg sd_mod crc_t10dif igb ehci_hcd i2c_algo_bit i2c_core usbcore ixgbe usb_common dca megaraid_sas scsi_mod mdio [last unloaded: scsi_wait_scan] [ 450.376475] [ 450.376589] Pid: 3515, comm: nfsd Tainted: G D W 3.2.0-4-amd64 #1 Debian 3.2.60-1+deb7u3 Dell Inc. PowerEdge R720xd/0C4Y3R [ 450.376990] RIP: 0010:[<ffffffffa0381311>] [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 450.377229] RSP: 0018:ffff880fe43f7d30 EFLAGS: 00010286 [ 450.377349] RAX: 0000000000004000 RBX: ffff880fbac5ec00 RCX: 0000000000000024 [ 450.377468] RDX: ffffffffa039d6fb RSI: 0000000000000000 RDI: ffff880fbac5ec00 [ 450.377586] RBP: ffff880fbac5ec00 R08: 0000000000000000 R09: 0000000000000000 [ 450.377710] R10: ffff880fbe8f6de0 R11: ffff880fbe8f6de0 R12: ffffffffa039d6fb [ 450.377829] R13: 0000000000000000 R14: 0000000000000440 R15: ffff880fe42e1180 [ 450.377954] FS: 0000000000000000(0000) GS:ffff88102f220000(0000) knlGS:0000000000000000 [ 450.378102] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 450.378223] CR2: 0000000000000010 CR3: 0000000001605000 CR4: 00000000000406e0 [ 450.378347] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 450.378471] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 450.378596] Process nfsd (pid: 3515, threadinfo ffff880fe43f6000, task ffff880fec22d740) [ 450.378737] Stack: [ 450.378847] 0000000000000451 ffff880f00000000 ffff880fbac5ec00 ffff880fbac42240 [ 450.379341] 0000000000000000 0000000000000000 0000000000000440 ffffffffa0381bf4 [ 450.379818] ffff880fe42f5700 0000000000000000 ffff880fe42e1040 ffff880fe42fc000 [ 450.380293] Call Trace: [ 450.380422] [<ffffffffa0381bf4>] ? nfsd4_set_nfs4_acl+0xb4/0xe6 [nfsd] [ 450.380555] [<ffffffffa038b637>] ? nfsd4_setattr+0xae/0xe8 [nfsd] [ 450.380679] [<ffffffffa038a8d6>] ? nfsd4_proc_compound+0x251/0x41d [nfsd] [ 450.380808] [<ffffffffa037e7cd>] ? nfsd_dispatch+0xd7/0x1ba [nfsd] [ 450.380941] [<ffffffffa030ec3f>] ? svc_process_common+0x2c3/0x4c4 [sunrpc] [ 450.381068] [<ffffffff8103f6e2>] ? try_to_wake_up+0x197/0x197 [ 450.381197] [<ffffffffa030f050>] ? svc_process+0x110/0x12c [sunrpc] [ 450.381322] [<ffffffffa037e0e3>] ? nfsd+0xe3/0x127 [nfsd] [ 450.381444] [<ffffffffa037e000>] ? 0xffffffffa037dfff [ 450.381569] [<ffffffff8105f701>] ? kthread+0x76/0x7e [ 450.381695] [<ffffffff813575b4>] ? kernel_thread_helper+0x4/0x10 [ 450.381819] [<ffffffff8105f68b>] ? kthread_worker_fn+0x139/0x139 [ 450.381942] [<ffffffff813575b0>] ? gs_change+0x13/0x13 [ 450.382060] Code: 48 8b 80 20 01 00 00 c6 87 9e 00 00 00 01 48 89 87 c8 00 00 00 c3 41 56 41 55 49 89 f5 41 54 49 89 d4 55 48 89 fd 53 48 83 ec 10 <48> 63 46 10 be d0 00 00 00 4c 8d 34 c5 04 00 00 00 4c 89 f7 e8 [ 450.387639] RIP [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 450.387850] RSP <ffff880fe43f7d30> [ 450.387964] CR2: 0000000000000010 [ 450.388076] BUG: unable to handle kernel [ 450.388096] ---[ end trace 5c2d08be1ab6f7cd ]--- [ 450.388393] NULL pointer dereference at 0000000000000010 [ 450.388592] IP: [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 450.388807] PGD 0 [ 450.388899] Oops: 0000 [#6] SMP [ 450.388902] CPU 0 [ 450.388903] Modules linked in: parport_pc ppdev lp parport binfmt_misc nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc loop snd_pcm snd_page_alloc snd_timer coretemp crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 aes_generic snd iTCO_wdt iTCO_vendor_support soundcore cryptd joydev evdev pcspkr sb_edac edac_core dcdbas shpchp wmi acpi_power_meter processor button thermal_sys xfs usbhid hid usb_storage sg sd_mod crc_t10dif igb ehci_hcd i2c_algo_bit i2c_core usbcore ixgbe usb_common dca megaraid_sas scsi_mod mdio [last unloaded: scsi_wait_scan] [ 450.388939] [ 450.388943] Pid: 3493, comm: nfsd Tainted: G D W 3.2.0-4-amd64 #1 Debian 3.2.60-1+deb7u3 Dell Inc. PowerEdge R720xd/0C4Y3R [ 450.388948] RIP: 0010:[<ffffffffa0381311>] [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 450.388960] RSP: 0018:ffff880fedd57d30 EFLAGS: 00010286 [ 450.388963] RAX: 0000000000004000 RBX: ffff880fbac5ecc0 RCX: 0000000000000024 [ 450.388966] RDX: ffffffffa039d6fb RSI: 0000000000000000 RDI: ffff880fbac5ecc0 [ 450.388969] RBP: ffff880fbac5ecc0 R08: 0000000000000000 R09: 0000000000000000 [ 450.388972] R10: ffff880fbe8f6de0 R11: ffff880fbe8f6de0 R12: ffffffffa039d6fb [ 450.388975] R13: 0000000000000000 R14: 0000000000000440 R15: ffff880fee550180 [ 450.388979] FS: 0000000000000000(0000) GS:ffff88102f200000(0000) knlGS:0000000000000000 [ 450.388983] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 450.388986] CR2: 0000000000000010 CR3: 0000000001605000 CR4: 00000000000406f0 [ 450.388989] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 450.388992] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 450.388996] Process nfsd (pid: 3493, threadinfo ffff880fedd56000, task ffff880fec0cd080) [ 450.388999] Stack: [ 450.389000] 0000000000000451 ffff880f00000000 ffff880fbac5ecc0 ffff880fe076b1c0 [ 450.389006] 0000000000000000 0000000000000000 0000000000000440 ffffffffa0381bf4 [ 450.389011] ffff880fbfabab00 0000000000000000 ffff880fee550040 ffff880fedc3c000 [ 450.389017] Call Trace: [ 450.389027] [<ffffffffa0381bf4>] ? nfsd4_set_nfs4_acl+0xb4/0xe6 [nfsd] [ 450.389039] [<ffffffffa038b637>] ? nfsd4_setattr+0xae/0xe8 [nfsd] [ 450.389049] [<ffffffffa038a8d6>] ? nfsd4_proc_compound+0x251/0x41d [nfsd] [ 450.389058] [<ffffffffa037e7cd>] ? nfsd_dispatch+0xd7/0x1ba [nfsd] [ 450.389071] [<ffffffffa030ec3f>] ? svc_process_common+0x2c3/0x4c4 [sunrpc] [ 450.389076] [<ffffffff8103f6e2>] ? try_to_wake_up+0x197/0x197 [ 450.389087] [<ffffffffa030f050>] ? svc_process+0x110/0x12c [sunrpc] [ 450.389094] [<ffffffffa037e0e3>] ? nfsd+0xe3/0x127 [nfsd] [ 450.389098] [<ffffffffa037e000>] ? 0xffffffffa037dfff [ 450.389104] [<ffffffff8105f701>] ? kthread+0x76/0x7e [ 450.389110] [<ffffffff813575b4>] ? kernel_thread_helper+0x4/0x10 [ 450.389115] [<ffffffff8105f68b>] ? kthread_worker_fn+0x139/0x139 [ 450.389120] [<ffffffff813575b0>] ? gs_change+0x13/0x13 [ 450.389122] Code: 48 8b 80 20 01 00 00 c6 87 9e 00 00 00 01 48 89 87 c8 00 00 00 c3 41 56 41 55 49 89 f5 41 54 49 89 d4 55 48 89 fd 53 48 83 ec 10 <48> 63 46 10 be d0 00 00 00 4c 8d 34 c5 04 00 00 00 4c 89 f7 e8 [ 450.389151] RIP [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 450.389160] RSP <ffff880fedd57d30> [ 450.389162] CR2: 0000000000000010 [ 450.389212] ---[ end trace 5c2d08be1ab6f7ce ]--- [ 630.325739] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [ 630.326058] IP: [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 630.326277] PGD 0 [ 630.326471] Oops: 0000 [#7] SMP [ 630.326753] CPU 1 [ 630.326841] Modules linked in: parport_pc ppdev lp parport binfmt_misc nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc loop snd_pcm snd_page_alloc snd_timer coretemp crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 aes_generic snd iTCO_wdt iTCO_vendor_support soundcore cryptd joydev evdev pcspkr sb_edac edac_core dcdbas shpchp wmi acpi_power_meter processor button thermal_sys xfs usbhid hid usb_storage sg sd_mod crc_t10dif igb ehci_hcd i2c_algo_bit i2c_core usbcore ixgbe usb_common dca megaraid_sas scsi_mod mdio [last unloaded: scsi_wait_scan] [ 630.332303] [ 630.332415] Pid: 3494, comm: nfsd Tainted: G D W 3.2.0-4-amd64 #1 Debian 3.2.60-1+deb7u3 Dell Inc. PowerEdge R720xd/0C4Y3R [ 630.332821] RIP: 0010:[<ffffffffa0381311>] [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 630.333060] RSP: 0018:ffff880fede53d30 EFLAGS: 00010286 [ 630.333175] RAX: 0000000000004000 RBX: ffff880fbac5ecc0 RCX: 0000000000000024 [ 630.333299] RDX: ffffffffa039d6fb RSI: 0000000000000000 RDI: ffff880fbac5ecc0 [ 630.333423] RBP: ffff880fbac5ecc0 R08: 0000000000000000 R09: 0000000000000000 [ 630.333547] R10: ffff880fbe8f6de0 R11: ffff880fbe8f6de0 R12: ffffffffa039d6fb [ 630.333671] R13: 0000000000000000 R14: 0000000000000440 R15: ffff880feb903180 [ 630.333790] FS: 0000000000000000(0000) GS:ffff88102f220000(0000) knlGS:0000000000000000 [ 630.333933] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 630.334052] CR2: 0000000000000010 CR3: 0000000001605000 CR4: 00000000000406e0 [ 630.334176] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 630.334300] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 630.334420] Process nfsd (pid: 3494, threadinfo ffff880fede52000, task ffff880fee410080) [ 630.334565] Stack: [ 630.334675] 0000000000000451 ffff880f00000000 ffff880fbac5ecc0 ffff880fe076b1c0 [ 630.335154] 0000000000000000 0000000000000000 0000000000000440 ffffffffa0381bf4 [ 630.335628] ffff880fda167280 0000000000000000 ffff880feb903040 ffff880fedd58000 [ 630.336106] Call Trace: [ 630.336234] [<ffffffffa0381bf4>] ? nfsd4_set_nfs4_acl+0xb4/0xe6 [nfsd] [ 630.336362] [<ffffffffa038b637>] ? nfsd4_setattr+0xae/0xe8 [nfsd] [ 630.336491] [<ffffffffa038a8d6>] ? nfsd4_proc_compound+0x251/0x41d [nfsd] [ 630.336620] [<ffffffffa037e7cd>] ? nfsd_dispatch+0xd7/0x1ba [nfsd] [ 630.336752] [<ffffffffa030ec3f>] ? svc_process_common+0x2c3/0x4c4 [sunrpc] [ 630.336885] [<ffffffff8103f6e2>] ? try_to_wake_up+0x197/0x197 [ 630.337010] [<ffffffffa030f050>] ? svc_process+0x110/0x12c [sunrpc] [ 630.337136] [<ffffffffa037e0e3>] ? nfsd+0xe3/0x127 [nfsd] [ 630.337257] [<ffffffffa037e000>] ? 0xffffffffa037dfff [ 630.337382] [<ffffffff8105f701>] ? kthread+0x76/0x7e [ 630.337508] [<ffffffff813575b4>] ? kernel_thread_helper+0x4/0x10 [ 630.337632] [<ffffffff8105f68b>] ? kthread_worker_fn+0x139/0x139 [ 630.337755] [<ffffffff813575b0>] ? gs_change+0x13/0x13 [ 630.337874] Code: 48 8b 80 20 01 00 00 c6 87 9e 00 00 00 01 48 89 87 c8 00 00 00 c3 41 56 41 55 49 89 f5 41 54 49 89 d4 55 48 89 fd 53 48 83 ec 10 <48> 63 46 10 be d0 00 00 00 4c 8d 34 c5 04 00 00 00 4c 89 f7 e8 [ 630.343459] RIP [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 630.343670] RSP <ffff880fede53d30> [ 630.343783] CR2: 0000000000000010 [ 630.343900] BUG: unable to handle kernel [ 630.343917] ---[ end trace 5c2d08be1ab6f7cf ]--- [ 630.344217] NULL pointer dereference at 0000000000000010 [ 630.344419] IP: [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 630.344633] PGD 0 [ 630.344727] Oops: 0000 [#8] SMP [ 630.344731] CPU 0 [ 630.344732] Modules linked in: parport_pc ppdev lp parport binfmt_misc nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc loop snd_pcm snd_page_alloc snd_timer coretemp crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 aes_generic snd iTCO_wdt iTCO_vendor_support soundcore cryptd joydev evdev pcspkr sb_edac edac_core dcdbas shpchp wmi acpi_power_meter processor button thermal_sys xfs usbhid hid usb_storage sg sd_mod crc_t10dif igb ehci_hcd i2c_algo_bit i2c_core usbcore ixgbe usb_common dca megaraid_sas scsi_mod mdio [last unloaded: scsi_wait_scan] [ 630.344769] [ 630.344773] Pid: 3492, comm: nfsd Tainted: G D W 3.2.0-4-amd64 #1 Debian 3.2.60-1+deb7u3 Dell Inc. PowerEdge R720xd/0C4Y3R [ 630.344779] RIP: 0010:[<ffffffffa0381311>] [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 630.344790] RSP: 0018:ffff880fedc3bd30 EFLAGS: 00010286 [ 630.344793] RAX: 0000000000004000 RBX: ffff880fbac5ec00 RCX: 0000000000000024 [ 630.344796] RDX: ffffffffa039d6fb RSI: 0000000000000000 RDI: ffff880fbac5ec00 [ 630.344799] RBP: ffff880fbac5ec00 R08: 0000000000000000 R09: 0000000000000000 [ 630.344802] R10: ffff880fbe8f6de0 R11: ffff880fbe8f6de0 R12: ffffffffa039d6fb [ 630.344805] R13: 0000000000000000 R14: 0000000000000440 R15: ffff880feb533180 [ 630.344809] FS: 0000000000000000(0000) GS:ffff88102f200000(0000) knlGS:0000000000000000 [ 630.344812] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 630.344815] CR2: 0000000000000010 CR3: 0000000001605000 CR4: 00000000000406f0 [ 630.344818] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 630.344822] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 630.344825] Process nfsd (pid: 3492, threadinfo ffff880fedc3a000, task ffff880fec15e800) [ 630.344828] Stack: [ 630.344829] 0000000000000451 ffff880f00000000 ffff880fbac5ec00 ffff880fbac42240 [ 630.344835] 0000000000000000 0000000000000000 0000000000000440 ffffffffa0381bf4 [ 630.344840] ffff880f87d16dc0 0000000000000000 ffff880feb533040 ffff880feb23a000 [ 630.344846] Call Trace: [ 630.344856] [<ffffffffa0381bf4>] ? nfsd4_set_nfs4_acl+0xb4/0xe6 [nfsd] [ 630.344868] [<ffffffffa038b637>] ? nfsd4_setattr+0xae/0xe8 [nfsd] [ 630.344879] [<ffffffffa038a8d6>] ? nfsd4_proc_compound+0x251/0x41d [nfsd] [ 630.344887] [<ffffffffa037e7cd>] ? nfsd_dispatch+0xd7/0x1ba [nfsd] [ 630.344900] [<ffffffffa030ec3f>] ? svc_process_common+0x2c3/0x4c4 [sunrpc] [ 630.344905] [<ffffffff8103f6e2>] ? try_to_wake_up+0x197/0x197 [ 630.344916] [<ffffffffa030f050>] ? svc_process+0x110/0x12c [sunrpc] [ 630.344923] [<ffffffffa037e0e3>] ? nfsd+0xe3/0x127 [nfsd] [ 630.344928] [<ffffffffa037e000>] ? 0xffffffffa037dfff [ 630.344934] [<ffffffff8105f701>] ? kthread+0x76/0x7e [ 630.344939] [<ffffffff813575b4>] ? kernel_thread_helper+0x4/0x10 [ 630.344945] [<ffffffff8105f68b>] ? kthread_worker_fn+0x139/0x139 [ 630.344950] [<ffffffff813575b0>] ? gs_change+0x13/0x13 [ 630.344952] Code: 48 8b 80 20 01 00 00 c6 87 9e 00 00 00 01 48 89 87 c8 00 00 00 c3 41 56 41 55 49 89 f5 41 54 49 89 d4 55 48 89 fd 53 48 83 ec 10 <48> 63 46 10 be d0 00 00 00 4c 8d 34 c5 04 00 00 00 4c 89 f7 e8 [ 630.344981] RIP [<ffffffffa0381311>] set_nfsv4_acl_one+0x15/0x7e [nfsd] [ 630.344990] RSP <ffff880fedc3bd30> [ 630.344992] CR2: 0000000000000010 [ 630.345009] ---[ end trace 5c2d08be1ab6f7d0 ]--- -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". 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