Hi, Sam. We've recently tried to use your pvfs-2-8-branch CVS branch to build a module for the 2.6.32 kernel, following your instructions to Christian. We're getting the following kernel panics, however. The following is from Jason Sommerfield's email to me:
When I run the init script that loads the kernel module, the following comes up on the serial console (but the system does NOT crash): ------------------------------------------------------------------------ cloud3u4 login: [ 788.802335] pvfs2: module version 2.8.1 loaded [ 788.881766] ------------[ cut here ]------------ [ 788.937066] WARNING: at fs/super.c:954 vfs_kern_mount+0x192/0x1a0() [ 789.012140] Hardware name: empty [ 789.050833] pvfs2 set sb->s_maxbytes to negative value (-9223372036854775808) [ 789.136334] Modules linked in: pvfs2 w83627hf_wdt nfs lockd nfs_acl auth_rpcgss sunrpc fuse coretemp w83627ehf w83793 hwmon_vid i5k_amb i2c_i801 i5400_edac tpm_infineon pcspkr serio_raw tpm tpm_bios edac_core mptsas mptscsih mptbase ehci_hcd scsi_transport_sas uhci_hcd e1000e netxen_nic floppy [last unloaded: scsi_wait_scan] [ 789.485468] Pid: 18550, comm: mount Tainted: G W 2.6.32-js6 #11 [ 789.564643] Call Trace: [ 789.593974] [<ffffffff81125c92>] ? vfs_kern_mount+0x192/0x1a0 [ 789.663872] [<ffffffff8105c4a8>] warn_slowpath_common+0x78/0xd0 [ 789.735845] [<ffffffff8105c584>] warn_slowpath_fmt+0x64/0x70 [ 789.804701] [<ffffffffa020183e>] ? pvfs2_get_sb+0x28e/0x320 [pvfs2] [ 789.880845] [<ffffffff8111d48b>] ? __alloc_percpu+0xb/0x10 [ 789.947612] [<ffffffff81213211>] ? security_sb_kern_mount+0x11/0x20 [ 790.023747] [<ffffffff81125c92>] vfs_kern_mount+0x192/0x1a0 [ 790.091570] [<ffffffff81125d0e>] do_kern_mount+0x4e/0x110 [ 790.157295] [<ffffffff81140380>] do_mount+0x290/0x910 [ 790.218870] [<ffffffff810f8d63>] ? strndup_user+0x83/0xc0 [ 790.284601] [<ffffffff81140ab3>] sys_mount+0xb3/0xe0 [ 790.345138] [<ffffffff81448959>] ? lockdep_sys_exit_thunk+0x35/0x67 [ 790.421274] [<ffffffff81011f82>] system_call_fastpath+0x16/0x1b [ 790.493249] ---[ end trace 4eaa2a86a8e2da24 ]--- ------------------------------------------------------------------------ When I try to do an 'ls /pvfs2/' (as clouduser, not root FWIW), the machine appears to crash (serial console output) : ------------------------------------------------------------------------ [ 1072.353527] BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 [ 1072.363488] IP: [<ffffffff81145068>] __mark_inode_dirty+0xd8/0x180 [ 1072.363488] PGD 42eb6d067 PUD 42b877067 PMD 0 [ 1072.363488] Oops: 0000 [#1] SMP [ 1072.363488] last sysfs file: /sys/devices/platform/coretemp.7/temp1_label [ 1072.363488] CPU 7 [ 1072.363488] Modules linked in: pvfs2 w83627hf_wdt nfs lockd nfs_acl auth_rpcgss sunrpc fuse coretemp w83627ehf w83793 hwmon_vid i5k_amb i2c_i801 i5400_edac tpm_infineon pcspkr serio_raw tpm tpm_bios edac_core mptsas mptscsih mptbase ehci_hcd scsi_transport_sas uhci_hcd e1000e netxen_nic floppy [last unloaded: scsi_wait_scan] [ 1072.363488] Pid: 19287, comm: ls Tainted: G W 2.6.32-js6 #11 empty [ 1072.363488] RIP: 0010:[<ffffffff81145068>] [<ffffffff81145068>] __mark_inode_dirty+0xd8/0x180 [ 1072.363488] RSP: 0018:ffff88042cd3be08 EFLAGS: 00010246 [ 1072.363488] RAX: ffff8804232c03c8 RBX: 0000000000000000 RCX: 0000000000000000 [ 1072.363488] RDX: 0000000000000000 RSI: ffff8800434100e0 RDI: 0000000000000246 [ 1072.363488] RBP: ffff88042cd3be28 R08: ffffffff8166c398 R09: 0000000000000001 [ 1072.363488] R10: 0000000000000000 R11: 00000000000001e1 R12: ffff8804232c0198 [ 1072.363488] R13: ffffffffa020e2a0 R14: 000000000000000a R15: ffff88042bd8c8c0 [ 1072.363488] FS: 00007f7aaef15770(0000) GS:ffff880043400000(0000) knlGS:0000000000000000 [ 1072.363488] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 1072.363488] CR2: 0000000000000030 CR3: 000000042a847000 CR4: 00000000000406e0 [ 1072.363488] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1072.363488] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 1072.363488] Process ls (pid: 19287, threadinfo ffff88042cd3a000, task ffff88042b234620) [ 1072.363488] Stack: [ 1072.363488] ffff88042cd3be28 ffff8804232c0198 0000000000000009 ffffc900025320dc [ 1072.363488] <0> ffff88042cd3bee8 ffffffffa01ffaaa ffffffff81133b10 ffff88042cd3bf38 [ 1072.363488] <0> 000000092cd3a000 0000000100000000 ffff88037d571000 ffff88042de60000 [ 1072.363488] Call Trace: [ 1072.363488] [<ffffffffa01ffaaa>] pvfs2_readdir+0x58a/0x890 [pvfs2] [ 1072.363488] [<ffffffff81133b10>] ? filldir+0x0/0xe0 [ 1072.363488] [<ffffffff81133b10>] ? filldir+0x0/0xe0 [ 1072.363488] [<ffffffff81133d95>] vfs_readdir+0xb5/0xd0 [ 1072.363488] [<ffffffff81133f0b>] sys_getdents+0x8b/0x100 [ 1072.363488] [<ffffffff81449aca>] ? error_exit+0x6a/0xb0 [ 1072.363488] [<ffffffff81011f82>] system_call_fastpath+0x16/0x1b [ 1072.363488] Code: 83 7c 24 08 00 74 7c 83 e2 60 75 77 83 e1 07 0f 1f 40 00 75 6e 49 8b 84 24 28 02 00 00 4c 8b a8 e8 00 00 00 49 8b 9d f0 01 00 00 <f6> 43 30 02 75 06 f6 43 28 10 74 73 48 8b 05 45 38 58 00 49 8b [ 1072.363488] RIP [<ffffffff81145068>] __mark_inode_dirty+0xd8/0x180 [ 1072.363488] RSP <ffff88042cd3be08> [ 1072.363488] CR2: 0000000000000030 [ 1075.435146] ---[ end trace 4eaa2a86a8e2da25 ]--- ------------------------------------------------------------------------ Looks like a null pointer in pvfs2_readdir? Any ideas? ~Milo _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
