On 01/20/2015 07:36 PM, Al Viro wrote:
On Tue, Jan 20, 2015 at 06:44:34PM -0800, Guenter Roeck wrote:The shit hits the fan earlier - when we end up missing /dev. There are two places where it could've been created (depending on CONFIG_BLK_DEV_INITRD); sys_mkdir(collected, mode); in init/initramfs.c (line 353 in linux-next) and err = sys_mkdir((const char __user __force *) "/dev", 0755); in init/noinitramfs.c (line 32). The latter would've screamed on failure; could you printk of collected (%s), mode (%o) and return value (%d) in the former and see what happens?sys_mkdir .:40775 returned -17 sys_mkdir usr:40775 returned 0 sys_mkdir usr/lib:40775 returned -2 sys_mkdir usr/share:40755 returned -2 sys_mkdir usr/share/udhcpc:40755 returned -2 sys_mkdir usr/bin:40775 returned -2 sys_mkdir usr/sbin:40775 returned -2 sys_mkdir mnt:40775 returned 0 sys_mkdir proc:40775 returned 0 sys_mkdir root:40775 returned 0 sys_mkdir lib:40775 returned 0 sys_mkdir lib/modules:40775 returned -2 sys_mkdir lib/modules/3.9.2:40775 returned -2 sys_mkdir lib/modules/3.9.2/kernel:40775 returned -2 with int err = sys_mkdir(collected, mode); pr_info("sys_mkdir %s:%o returned %d\n", collected, mode, err); added in init/initramfs.c.Just what is lib/modules/3.9.2 doing there? In any case, I think I have at
Artifact from when I created the root file system (which apparently was with 3.9.2). It is irrelevant for my testing, at least so far, so I never bothered fixing it.
least a plausible direction for digging. Look:
diff --git a/fs/namei.c b/fs/namei.c index 323957f..c7d107c 100644 --- a/fs/namei.c +++ b/fs/namei.c
With this patch: sys_mkdir .:40775 returned -17 sys_mkdir usr:40775 returned 0 sys_mkdir usr/lib:40775 returned 0 sys_mkdir usr/share:40755 returned 0 sys_mkdir usr/share/udhcpc:40755 returned 0 sys_mkdir usr/bin:40775 returned 0 sys_mkdir usr/sbin:40775 returned 0 sys_mkdir mnt:40775 returned 0 sys_mkdir proc:40775 returned 0 sys_mkdir root:40775 returned 0 sys_mkdir lib:40775 returned 0 sys_mkdir lib/modules:40775 returned 0 ... and the problem is fixed. Guenter -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
