Hello, We recently built Lustre 2.5.1 with kernel 2.6.32-431.5.1.el6 for CentOS-6.5 We have been getting these crashes whenever we try to run mkfs.lustre In the crash material you will notice that we are running mkfs.lustre.bin - this was done so we could first gather the full command lines. The open files, which are not on Lustre, seem to be getting corrupted on crash. I have already applied the patch associated with LU4778, but it does nopt seem to have changed anything. mkfs.lustre.bin --reformat --fsname hss3-rr1 --mdt --mgs --mkfsoptions='-m 0 -O mmp,extents,dir_index,uninit_groups' --mgsnode=10.2.101.1@o2ib0<mailto:--mgsnode=10.2.101.1@o2ib0> --failnode=10.2.. 101.2@o2ib0<mailto:101.2@o2ib0> /dev/mapper/map00 [root@ts-hss3-rr1-01 ~]# sh doit warning: /dev/mapper/map00: for Lustre 2.4 and later, the target index must be specified with --index Permanent disk data: Target: hss3-rr1:MDT0000 Index: 0 Lustre FS: hss3-rr1 Mount type: ldiskfs Flags: 0x65 (MDT MGS first_time update ) Persistent mount opts: user_xattr,errors=remount-ro Parameters: mgsnode=10.2.101.1@o2ib<mailto:mgsnode=10.2.101.1@o2ib> failover.node=10.2.101.2@o2ib<mailto:failover.node=10.2.101.2@o2ib> device size = 5717136MB formatting backing filesystem ldiskfs on /dev/mapper/map00 target name hss3-rr1:MDT0000 4k blocks 1463586816 options -m 0 -J size=400 -I 512 -i 2048 -q -O mmp,extents,dir_index,uninit_groups,dirdata,uninit_bg,^extents,dir_nlink,quota,huge_file,flex_bg -E lazy_journal_init -F mkfs_cmd = mke2fs -j -b 4096 -L hss3-rr1:MDT0000 -m 0 -J size=400 -I 512 -i 2048 -q -O mmp,extents,dir_index,uninit_groups,dirdata,uninit_bg,^extents,dir_nlink,quota,huge_file,flex_bg -E lazy_journal_init -F /dev/mapper/map00 1463586816 LDISKFS-fs (dm-4): Can't enable usage tracking on a filesystem with the QUOTA feature set LDISKFS-fs (dm-4): mount failed ------------[ cut here ]------------ WARNING: at fs/proc/generic.c:848 remove_proc_entry+0x1f5/0x217() (Not tainted) Hardware name: PowerEdge R710 remove_proc_entry: removing non-empty directory 'ldiskfs/dm-4', leaking at least 'prealloc_table' Modules linked in: ldiskfs(U) ohci_hcd ehci_hcd dell_rbu 8021q garp stp llc ib_srp scsi_transport_srp ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_addr mlx4_ib ib_sa ib_mad ib_core scsi_dh_rdac dcdbas sg rtc_cmos rtc_core rtc_lib thermal processor thermal_sys usbhid mlx4_en mlx4_core mpt2sas scsi_transport_sas raid_class megaraid_sas uhci_hcd qla4xxx iscsi_boot_sysfs libiscsi [last unloaded: scsi_wait_scan] Pid: 12123, comm: mkfs.lustre.bin Not tainted 2.6.32-431.5.1.el6_lustre.2.5.1_1.0.1 #1 Call Trace: [<ffffffff8117664c>] ? remove_proc_entry+0x1f5/0x217 [<ffffffff8104835b>] ? warn_slowpath_common+0x8d/0xa6 [<ffffffff81048466>] ? warn_slowpath_fmt+0x6e/0x70 [<ffffffff81523358>] ? schedule_timeout+0x2b/0x20a [<ffffffff81175b63>] ? xlate_proc_name+0x49/0xaa [<ffffffff81175b10>] ? proc_match+0x28/0x32 [<ffffffff8117664c>] ? remove_proc_entry+0x1f5/0x217 [<ffffffffa0218639>] ? ldiskfs_fill_super+0x249/0x2930 [ldiskfs] [<ffffffff8111cfce>] ? sget+0x3dc/0x3ee [<ffffffff8111d88d>] ? get_sb_bdev+0x12c/0x17a [<ffffffffa02183f0>] ? ldiskfs_fill_super+0x0/0x2930 [ldiskfs] [<ffffffffa0212858>] ? ldiskfs_get_sb+0x18/0x20 [ldiskfs] [<ffffffff8111c946>] ? vfs_kern_mount+0x5f/0xde [<ffffffff8111ca2c>] ? do_kern_mount+0x4c/0xf3 [<ffffffff81137242>] ? do_mount+0x6e7/0x78c [<ffffffff81101985>] ? alloc_pages_current+0xa3/0xac [<ffffffff8113736c>] ? sys_mount+0x85/0xbe [<ffffffff81002adb>] ? system_call_fastpath+0x16/0x1b ---[ end trace ac77351ab2043638 ]--- BUG: unable to handle kernel NULL pointer dereference at 00000000000001e8 IP: [<ffffffffa02160d4>] ldiskfs_clear_inode+0x24/0x50 [ldiskfs] PGD c2114d067 PUD c223f5067 PMD 0 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/virtual/block/dm-4/range CPU 2 Modules linked in: ldiskfs(U) ohci_hcd ehci_hcd dell_rbu 8021q garp stp llc ib_srp scsi_transport_srp ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_addr mlx4_ib ib_sa ib_mad ib_core scsi_dh_rdac dcdbas sg rtc_cmos rtc_core rtc_lib thermal processor thermal_sys usbhid mlx4_en mlx4_core mpt2sas scsi_transport_sas raid_class megaraid_sas uhci_hcd qla4xxx iscsi_boot_sysfs libiscsi [last unloaded: scsi_wait_scan] Pid: 12123, comm: mkfs.lustre.bin Tainted: G W --------------- 2.6.32-431.5.1.el6_lustre.2.5.1_1.0.1 #1 Dell Inc. PowerEdge R710/00NH4P RIP: 0010:[<ffffffffa02160d4>] [<ffffffffa02160d4>] ldiskfs_clear_inode+0x24/0x50 [ldiskfs] RSP: 0018:ffff880625685c38 EFLAGS: 00010296 RAX: 0000000000000000 RBX: ffff880c0b89c520 RCX: ffff880c265934c8 RDX: ffff880c0b89c130 RSI: ffff880c0b89c738 RDI: ffff880c0b89c520 RBP: ffff880625685c48 R08: 0000000000000001 R09: ffff880c0b89c568 R10: 7fffffffffffffff R11: 7fffffffffffffff R12: ffff880c0b89c658 R13: ffff880c23fb5860 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f214e2de700(0000) GS:ffff880645420000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00000000000001e8 CR3: 0000000c22311000 CR4: 00000000000007e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process mkfs.lustre.bin (pid: 12123, threadinfo ffff880625684000, task ffff880625ebe080) Stack: ffff880c0b89c520 ffff880c0b89c520 ffff880625685c68 ffffffff81132097 <d> ffff880c0b89c520 0000000000000000 ffff880625685c88 ffffffff8113247c <d> ffff880c0b89c520 ffff880c0b89c520 ffff880625685ca8 ffffffff81131af2 Call Trace: [<ffffffff81132097>] clear_inode+0x98/0xf2 [<ffffffff8113247c>] generic_drop_inode+0x47/0x5b [<ffffffff81131af2>] iput+0x66/0x6a [<ffffffff8112fefb>] shrink_dcache_for_umount_subtree+0x1ef/0x243 [<ffffffff811309cb>] shrink_dcache_for_umount+0x3c/0x4d [<ffffffff8111d005>] generic_shutdown_super+0x25/0x107 [<ffffffff8111d10e>] kill_block_super+0x27/0x3f [<ffffffff8111c8c7>] deactivate_locked_super+0x42/0x62 [<ffffffff8111d89c>] get_sb_bdev+0x13b/0x17a [<ffffffffa02183f0>] ? ldiskfs_fill_super+0x0/0x2930 [ldiskfs] [<ffffffffa0212858>] ldiskfs_get_sb+0x18/0x20 [ldiskfs] [<ffffffff8111c946>] vfs_kern_mount+0x5f/0xde [<ffffffff8111ca2c>] do_kern_mount+0x4c/0xf3 [<ffffffff81137242>] do_mount+0x6e7/0x78c [<ffffffff81101985>] ? alloc_pages_current+0xa3/0xac [<ffffffff8113736c>] sys_mount+0x85/0xbe [<ffffffff81002adb>] system_call_fastpath+0x16/0x1b Code: 1f 84 00 00 00 00 00 55 48 89 e5 53 48 83 ec 08 0f 1f 44 00 00 48 89 fb e8 2a 6d fe ff 48 8b 83 08 01 00 00 48 8b 80 88 02 00 00 <48> 8b b8 e8 01 00 00 48 85 ff 74 0c 48 8d b3 48 02 00 00 e8 9a RIP [<ffffffffa02160d4>] ldiskfs_clear_inode+0x24/0x50 [ldiskfs] RSP <ffff880625685c38> CR2: 00000000000001e8 ---[ end trace ac77351ab2043639 ]--- Kernel panic - not syncing: Fatal exception Pid: 12123, comm: mkfs.lustre.bin Tainted: G D W --------------- 2.6.32-431.5.1.el6_lustre.2.5.1_1.0.1 #1 Call Trace: [<ffffffff8104853c>] ? panic+0xd4/0x1ab [<ffffffff8100356e>] ? apic_timer_interrupt+0xe/0x20 [<ffffffff81049c78>] ? kmsg_dump+0x126/0x140 [<ffffffff815259b8>] ? oops_end+0xb5/0xc5 [<ffffffff8102ca79>] ? no_context+0x1fa/0x209 [<ffffffff8102cbfc>] ? __bad_area_nosemaphore+0x174/0x197 [<ffffffff8102cc63>] ? __bad_area+0x44/0x4d [<ffffffff8102cc94>] ? bad_area+0x13/0x15 [<ffffffff8152759b>] ? do_page_fault+0x264/0x456 [<ffffffff81048466>] ? warn_slowpath_fmt+0x6e/0x70 [<ffffffff81523358>] ? schedule_timeout+0x2b/0x20a [<ffffffff81069120>] ? bit_waitqueue+0x17/0x9f [<ffffffff81524e6f>] ? page_fault+0x1f/0x30 [<ffffffffa02160d4>] ? ldiskfs_clear_inode+0x24/0x50 [ldiskfs] [<ffffffffa02160c6>] ? ldiskfs_clear_inode+0x16/0x50 [ldiskfs] [<ffffffff81132097>] ? clear_inode+0x98/0xf2 [<ffffffff8113247c>] ? generic_drop_inode+0x47/0x5b [<ffffffff81131af2>] ? iput+0x66/0x6a [<ffffffff8112fefb>] ? shrink_dcache_for_umount_subtree+0x1ef/0x243 [<ffffffff811309cb>] ? shrink_dcache_for_umount+0x3c/0x4d [<ffffffff8111d005>] ? generic_shutdown_super+0x25/0x107 [<ffffffff8111d10e>] ? kill_block_super+0x27/0x3f [<ffffffff8111c8c7>] ? deactivate_locked_super+0x42/0x62 [<ffffffff8111d89c>] ? get_sb_bdev+0x13b/0x17a [<ffffffffa02183f0>] ? ldiskfs_fill_super+0x0/0x2930 [ldiskfs] [<ffffffffa0212858>] ? ldiskfs_get_sb+0x18/0x20 [ldiskfs] [<ffffffff8111c946>] ? vfs_kern_mount+0x5f/0xde [<ffffffff8111ca2c>] ? do_kern_mount+0x4c/0xf3 [<ffffffff81137242>] ? do_mount+0x6e7/0x78c [<ffffffff81101985>] ? alloc_pages_current+0xa3/0xac [<ffffffff8113736c>] ? sys_mount+0x85/0xbe [<ffffffff81002adb>] ? system_call_fastpath+0x16/0x1b [root@ts-hss3-rr1-04 ~]# cat doit mkfs.lustre.bin --reformat --ost --failnode=10.2.101.3@o2ib0<mailto:--failnode=10.2.101.3@o2ib0> --index=3 --mkfsoptions=' -O mmp,extents,dir_index,uninit_groups -m 0' --fsname hss3-rr1 --mgsnode=10.2.101.1@o2ib0<mailto:--mgsnode=10.2.101.1@o2ib0> --mgsnode=10.2.101.2@o2ib0<mailto:--mgsnode=10.2.101.2@o2ib0> /dev/mapper/map03 [root@ts-hss3-rr1-04 ~]# [root@ts-hss3-rr1-04 ~]# [root@ts-hss3-rr1-04 ~]# sh doit Permanent disk data: Target: hss3-rr1:OST0003 Index: 3 Lustre FS: hss3-rr1 Mount type: ldiskfs Flags: 0x62 (OST first_time update ) Persistent mount opts: errors=remount-ro Parameters: failover.node=10.2.101.3@o2ib<mailto:failover.node=10.2.101.3@o2ib> mgsnode=10.2.101.1@o2ib<mailto:mgsnode=10.2.101.1@o2ib> mgsnode=10.2.101.2@o2ib<mailto:mgsnode=10.2.101.2@o2ib> device size = 9536080MB formatting backing filesystem ldiskfs on /dev/mapper/map03 target name hss3-rr1:OST0003 4k blocks 2441236480 options -m 0 -J size=400 -I 256 -i 524288 -q -O mmp,extents,dir_index,uninit_groups,uninit_bg,dir_nlink,quota,huge_file,flex_bg -G 256 -E resize=4290772992,lazy_journal_init -F mkfs_cmd = mke2fs -j -b 4096 -L hss3-rr1:OST0003 -m 0 -J size=400 -I 256 -i 524288 -q -O mmp,extents,dir_index,uninit_groups,uninit_bg,dir_nlink,quota,huge_file,flex_bg -G 256 -E resize=4290772992,lazy_journal_init -F /dev/mapper/map03 2441236480 LDISKFS-fs (dm-4): Can't enable usage tracking on a filesystem with the QUOTA feature set LDISKFS-fs (dm-4): mount failed ------------[ cut here ]------------ WARNING: at fs/proc/generic.c:848 remove_proc_entry+0x1f5/0x217() (Not tainted) Hardware name: PowerEdge R710 remove_proc_entry: removing non-empty directory 'ldiskfs/dm-4', leaking at least 'prealloc_table' Modules linked in: ldiskfs(U) ohci_hcd ehci_hcd dell_rbu 8021q garp stp llc ib_srp scsi_transport_srp ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_addr mlx4_ib ib_sa ib_mad ib_core scsi_dh_rdac dcdbas sg rtc_cmos rtc_core rtc_lib thermal processor thermal_sys usbhid mlx4_en mlx4_core mpt2sas scsi_transport_sas raid_class megaraid_sas uhci_hcd qla4xxx iscsi_boot_sysfs libiscsi [last unloaded: scsi_wait_scan] Pid: 10824, comm: mkfs.lustre.bin Not tainted 2.6.32-431.5.1.el6_lustre.2.5.1_1.0.1 #1 Call Trace: [<ffffffff8117664c>] ? remove_proc_entry+0x1f5/0x217 [<ffffffff8104835b>] ? warn_slowpath_common+0x8d/0xa6 [<ffffffff81048466>] ? warn_slowpath_fmt+0x6e/0x70 [<ffffffff81523358>] ? schedule_timeout+0x2b/0x20a [<ffffffff81175b63>] ? xlate_proc_name+0x49/0xaa [<ffffffff81175b10>] ? proc_match+0x28/0x32 [<ffffffff8117664c>] ? remove_proc_entry+0x1f5/0x217 [<ffffffffa0218639>] ? ldiskfs_fill_super+0x249/0x2930 [ldiskfs] [<ffffffff8111cfce>] ? sget+0x3dc/0x3ee [<ffffffff8111d88d>] ? get_sb_bdev+0x12c/0x17a [<ffffffffa02183f0>] ? ldiskfs_fill_super+0x0/0x2930 [ldiskfs] [<ffffffffa0212858>] ? ldiskfs_get_sb+0x18/0x20 [ldiskfs] [<ffffffff8111c946>] ? vfs_kern_mount+0x5f/0xde [<ffffffff8111ca2c>] ? do_kern_mount+0x4c/0xf3 [<ffffffff81137242>] ? do_mount+0x6e7/0x78c [<ffffffff81101985>] ? alloc_pages_current+0xa3/0xac [<ffffffff8113736c>] ? sys_mount+0x85/0xbe [<ffffffff81002adb>] ? system_call_fastpath+0x16/0x1b ---[ end trace 95fb8561345cc399 ]--- BUG: unable to handle kernel NULL pointer dereference at 00000000000001e8 IP: [<ffffffffa02160d4>] ldiskfs_clear_inode+0x24/0x50 [ldiskfs] PGD 6227d6067 PUD 61bf18067 PMD 0 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/virtual/block/dm-4/range CPU 4 Modules linked in: ldiskfs(U) ohci_hcd ehci_hcd dell_rbu 8021q garp stp llc ib_srp scsi_transport_srp ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_addr mlx4_ib ib_sa ib_mad ib_core scsi_dh_rdac dcdbas sg rtc_cmos rtc_core rtc_lib thermal processor thermal_sys usbhid mlx4_en mlx4_core mpt2sas scsi_transport_sas raid_class megaraid_sas uhci_hcd qla4xxx iscsi_boot_sysfs libiscsi [last unloaded: scsi_wait_scan] Pid: 10824, comm: mkfs.lustre.bin Tainted: G W --------------- 2.6.32-431.5.1.el6_lustre.2.5.1_1.0.1 #1 Dell Inc. PowerEdge R710/00NH4P RIP: 0010:[<ffffffffa02160d4>] [<ffffffffa02160d4>] ldiskfs_clear_inode+0x24/0x50 [ldiskfs] RSP: 0018:ffff880621d2bc38 EFLAGS: 00010296 RAX: 0000000000000000 RBX: ffff8805ffa0b520 RCX: ffff880620c25cc8 RDX: ffff8805ffa0b130 RSI: ffff8805ffa0b738 RDI: ffff8805ffa0b520 RBP: ffff880621d2bc48 R08: 0000000000000001 R09: ffff8805ffa0b568 R10: 7fffffffffffffff R11: 7fffffffffffffff R12: ffff8805ffa0b658 R13: ffff8805ff91e6e0 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f1279cf2700(0000) GS:ffff88003ea80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00000000000001e8 CR3: 000000061891c000 CR4: 00000000000007e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process mkfs.lustre.bin (pid: 10824, threadinfo ffff880621d2a000, task ffff880625797510) Stack: ffff8805ffa0b520 ffff8805ffa0b520 ffff880621d2bc68 ffffffff81132097 <d> ffff8805ffa0b520 0000000000000000 ffff880621d2bc88 ffffffff8113247c <d> ffff8805ffa0b520 ffff8805ffa0b520 ffff880621d2bca8 ffffffff81131af2 Call Trace: [<ffffffff81132097>] clear_inode+0x98/0xf2 [<ffffffff8113247c>] generic_drop_inode+0x47/0x5b [<ffffffff81131af2>] iput+0x66/0x6a [<ffffffff8112fefb>] shrink_dcache_for_umount_subtree+0x1ef/0x243 [<ffffffff811309cb>] shrink_dcache_for_umount+0x3c/0x4d [<ffffffff8111d005>] generic_shutdown_super+0x25/0x107 [<ffffffff8111d10e>] kill_block_super+0x27/0x3f [<ffffffff8111c8c7>] deactivate_locked_super+0x42/0x62 [<ffffffff8111d89c>] get_sb_bdev+0x13b/0x17a [<ffffffffa02183f0>] ? ldiskfs_fill_super+0x0/0x2930 [ldiskfs] [<ffffffffa0212858>] ldiskfs_get_sb+0x18/0x20 [ldiskfs] [<ffffffff8111c946>] vfs_kern_mount+0x5f/0xde [<ffffffff8111ca2c>] do_kern_mount+0x4c/0xf3 [<ffffffff81137242>] do_mount+0x6e7/0x78c [<ffffffff81101985>] ? alloc_pages_current+0xa3/0xac [<ffffffff8113736c>] sys_mount+0x85/0xbe [<ffffffff81002adb>] system_call_fastpath+0x16/0x1b Code: 1f 84 00 00 00 00 00 55 48 89 e5 53 48 83 ec 08 0f 1f 44 00 00 48 89 fb e8 2a 6d fe ff 48 8b 83 08 01 00 00 48 8b 80 88 02 00 00 <48> 8b b8 e8 01 00 00 48 85 ff 74 0c 48 8d b3 48 02 00 00 e8 9a RIP [<ffffffffa02160d4>] ldiskfs_clear_inode+0x24/0x50 [ldiskfs] RSP <ffff880621d2bc38> CR2: 00000000000001e8 ---[ end trace 95fb8561345cc39a ]--- Kernel panic - not syncing: Fatal exception Pid: 10824, comm: mkfs.lustre.bin Tainted: G D W --------------- 2.6.32-431.5.1.el6_lustre.2.5.1_1.0.1 #1 Call Trace: [<ffffffff8104853c>] ? panic+0xd4/0x1ab [<ffffffff8100356e>] ? apic_timer_interrupt+0xe/0x20 [<ffffffff81049c78>] ? kmsg_dump+0x126/0x140 [<ffffffff815259b8>] ? oops_end+0xb5/0xc5 [<ffffffff8102ca79>] ? no_context+0x1fa/0x209 [<ffffffff8102cbfc>] ? __bad_area_nosemaphore+0x174/0x197 [<ffffffff8102cc63>] ? __bad_area+0x44/0x4d [<ffffffff8102cc94>] ? bad_area+0x13/0x15 [<ffffffff8152759b>] ? do_page_fault+0x264/0x456 [<ffffffff81048466>] ? warn_slowpath_fmt+0x6e/0x70 [<ffffffff81523358>] ? schedule_timeout+0x2b/0x20a [<ffffffff81069120>] ? bit_waitqueue+0x17/0x9f [<ffffffff81524e6f>] ? page_fault+0x1f/0x30 [<ffffffffa02160d4>] ? ldiskfs_clear_inode+0x24/0x50 [ldiskfs] [<ffffffffa02160c6>] ? ldiskfs_clear_inode+0x16/0x50 [ldiskfs] [<ffffffff81132097>] ? clear_inode+0x98/0xf2 [<ffffffff8113247c>] ? generic_drop_inode+0x47/0x5b [<ffffffff81131af2>] ? iput+0x66/0x6a [<ffffffff8112fefb>] ? shrink_dcache_for_umount_subtree+0x1ef/0x243 [<ffffffff811309cb>] ? shrink_dcache_for_umount+0x3c/0x4d [<ffffffff8111d005>] ? generic_shutdown_super+0x25/0x107 [<ffffffff8111d10e>] ? kill_block_super+0x27/0x3f [<ffffffff8111c8c7>] ? deactivate_locked_super+0x42/0x62 [<ffffffff8111d89c>] ? get_sb_bdev+0x13b/0x17a [<ffffffffa02183f0>] ? ldiskfs_fill_super+0x0/0x2930 [ldiskfs] [<ffffffffa0212858>] ? ldiskfs_get_sb+0x18/0x20 [ldiskfs] [<ffffffff8111c946>] ? vfs_kern_mount+0x5f/0xde [<ffffffff8111ca2c>] ? do_kern_mount+0x4c/0xf3 [<ffffffff81137242>] ? do_mount+0x6e7/0x78c [<ffffffff81101985>] ? alloc_pages_current+0xa3/0xac [<ffffffff8113736c>] ? sys_mount+0x85/0xbe [<ffffffff81002adb>] ? system_call_fastpath+0x16/0x1b Jerry Natowitz Jerry Natowitz