search for: strndup_user

...+0x1a/0x20 >> [ 7.709662] [<ffffffff811a85b8>] ? vfs_kern_mount+0x168/0x180 >> [ 7.713087] [<ffffffff811a8644>] ? do_kern_mount+0x54/0x120 >> [ 7.716256] [<ffffffff811cb928>] ? do_mount+0x3e8/0xb00 >> [ 7.719226] [<ffffffff811564eb>] ? strndup_user+0x4b/0xb0 >> [ 7.722237] [<ffffffff81156501>] ? strndup_user+0x61/0xb0 >> [ 7.725305] [<ffffffff811cc0ce>] ? sys_mount+0x8e/0xe0 >> [ 7.728296] [<ffffffff8100b182>] ? system_call_fastpath+0x16/0x1b >> [ 7.731679] ---[ end trace e290bd6f960f7e...

...ff81072d9a>] ? warn_slowpath_null+0x1a/0x20 [ 7.709662] [<ffffffff811a85b8>] ? vfs_kern_mount+0x168/0x180 [ 7.713087] [<ffffffff811a8644>] ? do_kern_mount+0x54/0x120 [ 7.716256] [<ffffffff811cb928>] ? do_mount+0x3e8/0xb00 [ 7.719226] [<ffffffff811564eb>] ? strndup_user+0x4b/0xb0 [ 7.722237] [<ffffffff81156501>] ? strndup_user+0x61/0xb0 [ 7.725305] [<ffffffff811cc0ce>] ? sys_mount+0x8e/0xe0 [ 7.728296] [<ffffffff8100b182>] ? system_call_fastpath+0x16/0x1b [ 7.731679] ---[ end trace e290bd6f960f7e2c ]--- [ 7.734312] Tainting kern...

...16] [<ffffffff8118f5d9>] mount_fs+0x39/0x1b0 [ 68.128643] [<ffffffff81141ef0>] ? __alloc_percpu+0x10/0x20 [ 68.128676] [<ffffffff811a8c27>] vfs_kern_mount+0x67/0x100 [ 68.128706] [<ffffffff811ab24e>] do_mount+0x23e/0xa20 [ 68.128737] [<ffffffff8113d73b>] ? strndup_user+0x4b/0xf0 [ 68.128766] [<ffffffff811abab3>] SyS_mount+0x83/0xc0 [ 68.128795] [<ffffffff814cfe1d>] system_call_fastpath+0x1a/0x1f [ 68.128826] Code: 8b 7d 90 4c 89 f6 e8 ad 9e 00 00 e9 dc fc ff ff 48 85 d2 74 40 80 be 30 fe ff ff 84 48 89 d0 74 34 48 83 f8 01 0f 84 87 fc ff ff &l...

...[<ffffffff810f1932>] ? __alloc_percpu+0x10/0x12 [ 107.680173] [<ffffffff811221d4>] vfs_kern_mount+0xaf/0x1dc [ 107.680173] [<ffffffff81122369>] do_kern_mount+0x4d/0xef [ 107.680173] [<ffffffff811383f0>] do_mount+0x6f2/0x731 [ 107.680173] [<ffffffff810ed536>] ? strndup_user+0x3e/0x53 [ 107.680173] [<ffffffff81138656>] sys_mount+0x88/0xc2 [ 107.680173] [<ffffffff8100acc2>] system_call_fastpath+0x16/0x1b [ 107.680173] Code: 48 ba 00 02 20 00 00 00 ad de 48 89 0b 48 89 53 08 58 5b c9 c3 55 48 89 e5 41 55 49 89 fd 41 54 49 89 f4 53 48 89 d3 48 83 ec 08 &l...

The options -x -v gave me an error that no such option so I ruined it with —debug option. root@ny2proxd03:/var/lib/vz/images/100# virt-resize --expand /dev/sda3 vm-100-disk-1.qcow2 vm-100-disk-1.qcow2.resized --debug command line: virt-resize --expand /dev/sda3 vm-100-disk-1.qcow2 vm-100-disk-1.qcow2.resized --debug Examining vm-100-disk-1.qcow2 ... libguestfs: trace: add_drive

...c_vfsmnt+0xd7/0x1b0 Jan 24 11:26:42 localhost kernel: [ 14.777342] [<ffffffff811b1c14>] vfs_kern_mount+0x74/0x110 Jan 24 11:26:42 localhost kernel: [ 14.777345] [<ffffffff811b3f66>] do_mount+0x216/0xa80 Jan 24 11:26:42 localhost kernel: [ 14.777348] [<ffffffff81149c0b>] ? strndup_user+0x5b/0x80 Jan 24 11:26:42 localhost kernel: [ 14.777351] [<ffffffff811b485e>] sys_mount+0x8e/0xe0 Jan 24 11:26:42 localhost kernel: [ 14.777355] [<ffffffff816cfd1d>] system_call_fastpath+0x1a/0x1f Jan 24 11:26:42 localhost kernel: [ 14.777356] ---[ end trace da079e2b4c0faaa4 ]--...

...* Get the parameters from the user. */ + if (copy_from_user(&param, p, sizeof(struct fsl_hv_ioctl_prop))) + return -EFAULT; + + upath = (char __user *)(uintptr_t)param.path; + upropname = (char __user *)(uintptr_t)param.propname; + upropval = (void __user *)(uintptr_t)param.propval; + + path = strndup_user(upath, FH_DTPROP_MAX_PATHLEN); + if (IS_ERR(path)) { + ret = PTR_ERR(path); + goto out; + } + + propname = strndup_user(upropname, FH_DTPROP_MAX_PATHLEN); + if (IS_ERR(propname)) { + ret = PTR_ERR(propname); + goto out; + } + + if (param.proplen > FH_DTPROP_MAX_PROPLEN) { + ret = -EINVAL; +...

...* Get the parameters from the user. */ + if (copy_from_user(&param, p, sizeof(struct fsl_hv_ioctl_prop))) + return -EFAULT; + + upath = (char __user *)(uintptr_t)param.path; + upropname = (char __user *)(uintptr_t)param.propname; + upropval = (void __user *)(uintptr_t)param.propval; + + path = strndup_user(upath, FH_DTPROP_MAX_PATHLEN); + if (IS_ERR(path)) { + ret = PTR_ERR(path); + goto out; + } + + propname = strndup_user(upropname, FH_DTPROP_MAX_PATHLEN); + if (IS_ERR(propname)) { + ret = PTR_ERR(propname); + goto out; + } + + if (param.proplen > FH_DTPROP_MAX_PROPLEN) { + ret = -EINVAL; +...

...160] [<ffffffff81197c43>] mount_fs+0x43/0x1b0 [ 480.865187] [<ffffffff811b2457>] ? alloc_vfsmnt+0xd7/0x1b0 [ 480.865214] [<ffffffff811b25e4>] vfs_kern_mount+0x74/0x110 [ 480.865240] [<ffffffff811b495f>] do_mount+0x21f/0xac0 [ 480.865270] [<ffffffff8114a46b>] ? strndup_user+0x5b/0x80 [ 480.865296] [<ffffffff811b528e>] sys_mount+0x8e/0xe0 [ 480.865323] [<ffffffff816d37dd>] system_call_fastpath+0x1a/0x1f [ 480.865352] Code: ef e8 bb 9e ff ff 85 c0 75 21 83 7d b8 02 0f 85 ad fe ff ff 48 8b 75 c0 4c 89 e2 4c 89 ef e8 5e dd ff ff 85 c0 0f 84 96 fe ff ff &...

...* Get the parameters from the user. */ + if (copy_from_user(&param, p, sizeof(struct fsl_hv_ioctl_prop))) + return -EFAULT; + + upath = (char __user *)(uintptr_t)param.path; + upropname = (char __user *)(uintptr_t)param.propname; + upropval = (void __user *)(uintptr_t)param.propval; + + path = strndup_user(upath, FH_DTPROP_MAX_PATHLEN); + if (IS_ERR(path)) { + ret = PTR_ERR(path); + goto out; + } + + propname = strndup_user(upropname, FH_DTPROP_MAX_PATHLEN); + if (IS_ERR(propname)) { + ret = PTR_ERR(propname); + goto out; + } + + if (param.proplen > FH_DTPROP_MAX_PROPLEN) { + ret = -EINVAL; +...

...* Get the parameters from the user. */ + if (copy_from_user(&param, p, sizeof(struct fsl_hv_ioctl_prop))) + return -EFAULT; + + upath = (char __user *)(uintptr_t)param.path; + upropname = (char __user *)(uintptr_t)param.propname; + upropval = (void __user *)(uintptr_t)param.propval; + + path = strndup_user(upath, FH_DTPROP_MAX_PATHLEN); + if (IS_ERR(path)) { + ret = PTR_ERR(path); + goto out; + } + + propname = strndup_user(upropname, FH_DTPROP_MAX_PATHLEN); + if (IS_ERR(propname)) { + ret = PTR_ERR(propname); + goto out; + } + + if (param.proplen > FH_DTPROP_MAX_PROPLEN) { + ret = -EINVAL; +...

I''ve been working to try to improve the write-ahead log''s performance, and I found that the bottleneck addresses in the checksum items, especially when we want to make a random write on a large file, e.g a 4G file. Then a idea for this suggested by Chris is to use sub transaction ids and just to log the part of inode that had changed since either the last log commit or the last