I'm going on a flight. Will look into it as soon as I get to shore. Benny -----Original Message----- From: <tao.peng@xxxxxxx> Date: Tue, 13 Sep 2011 08:02:48 To: <bhalevy@xxxxxxxxxx> Cc: <linux-nfs@xxxxxxxxxxxxxxx> Subject: RE: NULL pointer dereference during mount > -----Original Message----- > From: linux-nfs-owner@xxxxxxxxxxxxxxx [mailto:linux-nfs-owner@xxxxxxxxxxxxxxx] > On Behalf Of tao.peng@xxxxxxx > Sent: Tuesday, September 13, 2011 7:55 PM > To: bhalevy@xxxxxxxxxx > Cc: linux-nfs@xxxxxxxxxxxxxxx > Subject: NULL pointer dereference during mount > > Hi, Benny, > > After rebasing to your pnfs-all-latest branch, I always got bellow NULL pointer > dereference for both nfsv4 and pnfs. Do you know of any recent change that can > cause this? Just verified that Trond's nfs-for-next branch is working. So should be something only in your tree. > > [ 81.468606] BUG: unable to handle kernel NULL pointer dereference at > 0000000000000030 > [ 81.468919] IP: [<ffffffff8120ca85>] selinux_set_mnt_opts+0x4f/0x3fb > [ 81.469174] PGD 2ffc067 PUD 2e84067 PMD 0 > [ 81.469455] Oops: 0000 [#1] SMP > [ 81.469455] CPU 0 > [ 81.469455] Modules linked in: blocklayoutdriver nfs lockd fscache auth_rpcgss > nfs_acl ebtable_nat ebtables ipt_MASQUERADE ipt > able_nat nf_nat xt_CHECKSUM iptable_mangle bridge stp llc sunrpc ip6t_REJECT > be2iscsi nf_conntrack_ipv6 nf_defrag_ipv6 iscsi_boot > _sysfs bnx2i ip6table_filter cnic uio ip6_tables cxgb3i libcxgbi cxgb3 mdio iscsi_tcp > libiscsi_tcp libiscsi scsi_transport_iscsi > pcspkr e1000 i2c_piix4 ppdev shpchp i2c_core parport_pc parport vmw_balloon > microcode ipv6 mptspi mptscsih mptbase scsi_transport > _spi [last unloaded: nfs] > [ 81.469455] > [ 81.469455] Pid: 1919, comm: mount.nfs Not tainted 3.1.0-rc3+ #3 VMware, Inc. > VMware Virtual Platform/440BX Desktop Reference > Platform > [ 81.469455] RIP: 0010:[<ffffffff8120ca85>] [<ffffffff8120ca85>] > selinux_set_mnt_opts+0x4f/0x3fb > [ 81.469455] RSP: 0018:ffff88000d22fb28 EFLAGS: 00010296 > [ 81.469455] RAX: 0000000000000000 RBX: ffff880008460200 RCX: > 0000000000000000 > [ 81.469455] RDX: 0000000000000000 RSI: ffff880008460390 RDI: > ffff8800003dc800 > [ 81.469455] RBP: ffff88000d22fbb8 R08: 0000000000000001 R09: > 0000000000000000 > [ 81.469455] R10: 0000ffff00066c0a R11: 0000000000000000 R12: > ffff880000019a00 > [ 81.469455] R13: ffff8800003dc800 R14: ffff880008460390 R15: > ffff8800003dc800 > [ 81.469455] FS: 00007ffebe637720(0000) GS:ffff880017400000(0000) > knlGS:0000000000000000 > [ 81.469455] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > [ 81.469455] CR2: 0000000000000030 CR3: 000000000ce79000 CR4: > 00000000000006f0 > [ 81.469455] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > [ 81.469455] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 > [ 81.469455] Process mount.nfs (pid: 1919, threadinfo ffff88000d22e000, task > ffff88000cb08000) > [ 81.469455] Stack: > [ 81.469455] ffffea0000031880 ffff880000000008 0000000000000000 > ffff88000d22fb48 > [ 81.469455] ffff88000d22fb78 ffffffffa02fe5ee 0000000180150011 > ffff88000a308cc0 > [ 81.469455] 0000000000000001 0000000000000001 ffff88000d22fbc8 > ffffffffa02caac5 > [ 81.469455] Call Trace: > [ 81.469455] [<ffffffffa02caac5>] ? nfs4_get_root+0x20f/0x242 [nfs] > [ 81.469455] [<ffffffff8120504e>] security_sb_set_mnt_opts+0x16/0x18 > [ 81.469455] [<ffffffffa02ce6bd>] nfs4_remote_mount+0x17c/0x1ff [nfs] > [ 81.469455] [<ffffffff8112fde6>] mount_fs+0x69/0x157 > [ 81.469455] [<ffffffff810fb000>] ? __alloc_percpu+0x10/0x12 > [ 81.469455] [<ffffffff811444ca>] vfs_kern_mount+0x63/0xa0 > [ 81.469455] [<ffffffffa02ce9b8>] nfs_do_root_mount+0x7b/0x9a [nfs] > [ 81.469455] [<ffffffffa02cec8f>] nfs4_try_mount+0x58/0xba [nfs] > [ 81.469455] [<ffffffffa02cfff1>] nfs_fs_mount+0x48b/0x6e9 [nfs] > [ 81.469455] [<ffffffff8112fde6>] mount_fs+0x69/0x157 > [ 81.469455] [<ffffffff810fb000>] ? __alloc_percpu+0x10/0x12 > [ 81.469455] [<ffffffff811444ca>] vfs_kern_mount+0x63/0xa0 > [ 81.469455] [<ffffffff811451be>] do_kern_mount+0x4d/0xdf > [ 81.469455] [<ffffffff8114685d>] do_mount+0x63c/0x69f > [ 81.469455] [<ffffffff81146185>] ? copy_mount_options+0xcb/0x12e > [ 81.469455] [<ffffffff81146b6e>] sys_mount+0x88/0xc2 > [ 81.469455] [<ffffffff8147e502>] system_call_fastpath+0x16/0x1b > [ 81.469455] Code: 00 00 4c 8b a7 a8 01 00 00 49 89 fd 48 8b 56 08 48 89 45 a8 > 48 8b 47 28 48 89 55 80 48 8b 00 48 89 45 98 49 8b 04 24 48 8b 40 60 > [ 81.469455] 8b 40 30 48 8b 40 38 48 89 45 a0 48 8b 06 8b 76 10 48 89 45 > [ 81.469455] RIP [<ffffffff8120ca85>] selinux_set_mnt_opts+0x4f/0x3fb > [ 81.469455] RSP <ffff88000d22fb28> > [ 81.469455] CR2: 0000000000000030 > [ 81.513181] ---[ end trace dccee53f6c438566 ]--- > > > > Cheers, > -Bergwolf > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html ÿôèº{.nÇ+?·?®??+%?Ëÿ±éݶ¥?wÿº{.nÇ+?·¥?{±þwìþ)í?æèw* jg¬±¨ ¶????Ý¢jÿ¾«þG«?éÿ¢¸ ¢·¦j:+v?¨?wèjØm¶?ÿþø ¯ù ®w¥þ?àþf£¢·h??â?úÿ?Ù¥
