“What is the kernel die message”的版本间的差异 What is the kernel die message 0

2019年11月20日 (三) 17:56的版本

error

(XEN) *** LOADING DOMAIN 0 ***
(XEN) Loading d0 kernel from boot module @ 00000000b936c000
(XEN) Allocating 1:1 mappings totalling 512MB for dom0:
(XEN) BANK[0] 0x000000c0000000-0x000000e0000000 (512MB)
(XEN) Grant table range: 0x000000b921c000-0x000000b925c000
(XEN) Allocating PPI 16 for event channel interrupt
(XEN) Loading zImage from 00000000b936c000 to 00000000c0080000-00000000c1187200
(XEN) Loading d0 DTB to 0x00000000c8000000-0x00000000c800a813
...
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Boot CPU: AArch64 Processor [410fd034]
[    0.000000] Machine model: HiKey960
[    0.000000] Xen 4.13 support found
[    0.000000] Kernel command line: console=tty0 console=hvc0 root=/dev/sdd10 rw efi=noruntime
[    0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes)
[    0.000000] Memory: 456156K/525312K available (10364K kernel code, 1180K rwdata, 4664K rodata, 1152K init, 405K bss, 52772K reserved, 16384K cma-reserved)
...
[    7.067414] --CJ  enter prepare_namespace: root_delay=0
[    7.294633] ufshcd-hi3660 ff3b0000.ufs: ufshcd_query_flag: Sending flag query for idn 3 failed, err = -11
[    7.683146] xhci-hcd xhci-hcd.0.auto: USB bus 2 deregistered
[    7.688722] xhci-hcd xhci-hcd.0.auto: remove, state 1
...
[   14.998578] ufshcd-hi3660 ff3b0000.ufs: ufshcd_init_icc_levels: Failed reading power descriptor.len = 98 ret = -11
[   36.480083] ufshcd-hi3660 ff3b0000.ufs: ufshcd_print_pwr_info:[RX, TX]: gear=[1, 1], lane[1, 1], pwr[SLOWAUTO_MODE, SLOWAUTO_MODE], rate = 0
[   36.493073] ufshcd-hi3660 ff3b0000.ufs: UPIU[0] - issue time 14654573 us
...
[   36.755689] ufshcd-hi3660 ff3b0000.ufs: ufshcd_print_pwr_info:[RX, TX]: gear=[3, 3], lane[2, 2], pwr[FAST MODE, FAST MODE], rate = 2
[   36.767798] --CJ in mount_root: entering mount_block_root(/dev/root, 0x8000)
[   36.774793] --CJ mount_block_root: name=/dev/root, fs_names = 
[   36.862337] -CJ do_mount_root (/dev/root, ext3)
 
[   36.866925] VFS: Cannot open root device "sdd10" or unknown-block(0,0): error -6
[   36.874332] Please append a correct "root=" boot option; here are the available partitions:
[   36.882734] --CJ printk_all_partitions: 
[   36.886730] -- -- CJ loop 1
[   36.889578] -- -- CJ loop 1
[   36.892442] -- -- CJ loop 1
[   36.895304] -- -- CJ loop 1
[   36.898157] -- -- CJ loop 1
[   36.901025] -- -- CJ loop 1
[   36.903889] -- -- CJ loop 1
[   36.906751] -- -- CJ loop 1
[   36.909613] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[   36.930939] Call trace:
[   36.933464] [<ffff000008088be0>] dump_backtrace+0x0/0x370
[   36.938925] [<ffff000008088f64>] show_stack+0x14/0x20
[   36.944037] [<ffff000008a71200>] dump_stack+0x9c/0xbc
[   36.949159] [<ffff0000080c78d8>] panic+0x11c/0x28c
[   36.954011] [<ffff000008f41184>] mount_block_root+0x1bc/0x290
[   36.959817] [<ffff000008f41384>] mount_root+0x12c/0x144
[   36.965107] [<ffff000008f414e4>] prepare_namespace+0x148/0x190
[   36.971005] [<ffff000008f40d8c>] kernel_init_freeable+0x208/0x22c
[   36.977163] [<ffff000008a836e8>] kernel_init+0x10/0x100
[   36.982451] [<ffff000008084b58>] ret_from_fork+0x10/0x18
[   36.987832] SMP: stopping secondary CPUs

init\do_mount.c

void __init prepare_namespace(void)
{
	mount_root();
}
 
void __init mount_root(void)
{
		int err = create_dev("/dev/root", ROOT_DEV);
		mount_block_root("/dev/root", root_mountflags/=0x8000/);
}
 
void __init mount_block_root(char *name, int flags) //name shouldn't be sdd10
	for (p = fs_names; *p; p += strlen(p)+1) {
		int err = do_mount_root(name, p, flags, root_mount_data);
                //SYS_MOUNT("/dev/root", "/root","ext3") error
		switch (err) {
			case 0:
				goto out;
		}
		__bdevname(ROOT_DEV, b); //ROOT_DEV=0
		printk("VFS: Cannot open root device \"%s\" or %s: error %d\n",
				root_device_name, b, err);
//VFS: Cannot open root device "sdd10" or unknown-block(0,0): error -6
 
		printk("Please append a correct \"root=\" boot option; here are the available partitions:\n");
                      //Please append a correct "root=" boot option; here are the available partitions:
 
		printk_all_partitions();//NO OUTPUT
#ifdef CONFIG_DEBUG_BLOCK_EXT_DEVT
		printk("DEBUG_BLOCK_EXT_DEVT is enabled, you need to specify "
		       "explicit textual name for \"root=\" boot option.\n");
#endif
		panic("VFS: Unable to mount root fs on %s", b);
                // VFS: Unable to mount root fs on unknown-block(0,0)
	}
	if (!(flags & SB_RDONLY)) {
		flags |= SB_RDONLY;
		goto retry;
	}
 
	printk("List of all partitions:\n");
	printk_all_partitions();
	printk("No filesystem could mount root, tried: ");
	for (p = fs_names; *p; p += strlen(p)+1)
		printk(" %s", p);
	printk("\n");
#ifdef CONFIG_BLOCK
	__bdevname(ROOT_DEV, b);
#endif
	panic("VFS: Unable to mount root fs on %s", b);
out:
	put_page(page);
}
 
static int __init do_mount_root(char *name, char *fs, int flags, void *data)
{
	struct super_block *s;
	int err = sys_mount(name, "/root", fs, flags, data);
	if (err)
		return err;
 
	sys_chdir("/root");
	s = current->fs->pwd.dentry->d_sb;
	ROOT_DEV = s->s_dev;
	printk(KERN_INFO
	       "VFS: Mounted root (%s filesystem)%s on device %u:%u.\n",
	       s->s_type->name,
	       sb_rdonly(s) ? " readonly" : "",
	       MAJOR(ROOT_DEV), MINOR(ROOT_DEV));
	return 0;
}

@@ 第19行： / 第19行： @@
 [    0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes)
 [    0.000000] Memory: 456156K/525312K available (10364K kernel code, 1180K rwdata, 4664K rodata, 1152K init, 405K bss, 52772K reserved, 16384K cma-reserved)
+...
+[    7.067414] --CJ  enter prepare_namespace: root_delay=0
+[    7.294633] ufshcd-hi3660 ff3b0000.ufs: ufshcd_query_flag: Sending flag query for idn 3 failed, err = -11
+[    7.683146] xhci-hcd xhci-hcd.0.auto: USB bus 2 deregistered
+[    7.688722] xhci-hcd xhci-hcd.0.auto: remove, state 1
 ...
 [   14.998578] ufshcd-hi3660 ff3b0000.ufs: ufshcd_init_icc_levels: Failed reading power descriptor.len = 98 ret = -11
@@ 第26行： / 第31行： @@
 [   36.755689] ufshcd-hi3660 ff3b0000.ufs: ufshcd_print_pwr_info:[RX, TX]: gear=[3, 3], lane[2, 2], pwr[FAST MODE, FAST MODE], rate = 2
 [   36.767798] --CJ in mount_root: entering mount_block_root(/dev/root, 0x8000)
-[   36.774793] --CJ mount_block_root: name=/dev/root, fs_names = ����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������
+[   36.774793] --CJ mount_block_root: name=/dev/root, fs_names =
 [   36.862337] -CJ do_mount_root (/dev/root, ext3)
 [   36.866925] VFS: Cannot open root device "sdd10" or unknown-block(0,0): error -6
 [   36.874332] Please append a correct "root=" boot option; here are the available partitions:
@@ 第59行： / 第65行： @@
 void __init prepare_namespace(void)
 {
-	int is_floppy;
-	md_run_setup();
-	if (saved_root_name[0]) {
-		root_device_name = saved_root_name;
-		if (!strncmp(root_device_name, "mtd", 3) ||
-		    !strncmp(root_device_name, "ubi", 3)) {
-			mount_block_root(root_device_name, root_mountflags);
-			goto out;
-		}
-		ROOT_DEV = name_to_dev_t(root_device_name);
-		if (strncmp(root_device_name, "/dev/", 5) == 0)
-			root_device_name += 5;
-	}
 	mount_root();
 }
@@ 第82行： / 第71行： @@
 {
 		int err = create_dev("/dev/root", ROOT_DEV);
+		mount_block_root("/dev/root", root_mountflags/=0x8000/);
-		if (err < 0)
-			pr_emerg("Failed to create /dev/root: %d\n", err);
-		mount_block_root("/dev/root", root_mountflags);
 }
 void __init mount_block_root(char *name, int flags) //name shouldn't be sdd10
-	struct page *page = alloc_page(GFP_KERNEL |
-					__GFP_NOTRACK_FALSE_POSITIVE);
-	char *fs_names = page_address(page);
-	char *p;
- 	char b[BDEVNAME_SIZE];
-	get_fs_names(fs_names);
-retry:
 	for (p = fs_names; *p; p += strlen(p)+1) {
-		int err = do_mount_root(name, p, flags, root_mount_data);//SYS_MOUNT(name, "/root",fs) error
+		int err = do_mount_root(name, p, flags, root_mount_data);
+                //SYS_MOUNT("/dev/root", "/root","ext3") error
 		switch (err) {
 			case 0:
 				goto out;
-			case -EACCES:
-			case -EINVAL:
-				continue;
 		}
-	        /*
-		 * Allow the user to distinguish between failed sys_open
-		 * and bad superblock on root device.
-		 * and give them a list of the available devices
-		 */
-#ifdef CONFIG_BLOCK
 		__bdevname(ROOT_DEV, b); //ROOT_DEV=0
-#endif
 		printk("VFS: Cannot open root device \"%s\" or %s: error %d\n",
 				root_device_name, b, err);

“What is the kernel die message”的版本间的差异 What is the kernel die message 0

2019年11月20日 (三) 17:56的版本

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