Hi ,
I downloaded the latest version of linux-3.11.8 ,configured it as UML and
got the statically compiled binary (linux).
Then i downloaded the latest busybox 1.21.1 and compiled with default
configuration. Then i converted the busybox binary into a ext4 filesystem.
while running linux as UML,
./linux ubda=./busybox mem=128M
i'm getting the following error
EXT4-fs (ubda): mounted filesystem with ordered data mode. Opts: (null)
[ 1.170000] VFS: Mounted root (ext4 filesystem) readonly on device 98:0.
[ 1.170000] Kernel panic - not syncing: No init found. Try passing
init= option to kernel. See Linux Documentation/init.txt for guidance.
[ 1.170000] CPU: 0 PID: 1 Comm: swapper Not tainted 3.11.8 #6
[ 1.170000] 67c3fe78 67c3feb0 60058699 6004c888 60600531 00000000
00000000 67c3fec0
[ 1.170000] 604f6fe3 67c3ffc0 604f1e3b 00000000 3000000008
67c3ffd0 67c3fef0 657fe900
[ 1.170000] 6004c888 00000f76 6004c888 00000003 67c3fe40 60600529
fffffffe 67c3ffa0
[ 1.170000] Call Trace:
[ 1.170000] 67c3fe88: [<60058699>] dump_stack_print_info+0xa5/0xae
[ 1.170000] 67c3fe90: [<6004c888>] put_cred_rcu+0x0/0xa4
[ 1.170000] 67c3feb8: [<604f6fe3>] dump_stack+0x17/0x19
[ 1.170000] 67c3fec8: [<604f1e3b>] panic+0xf7/0x1ee
[ 1.170000] 67c3fef8: [<6004c888>] put_cred_rcu+0x0/0xa4
[ 1.170000] 67c3ff08: [<6004c888>] put_cred_rcu+0x0/0xa4
[ 1.170000] 67c3ff38: [<600ac7ce>] do_execve_common+0x49b/0x4f0
[ 1.170000] 67c3ff48: [<6004d600>]
async_synchronize_cookie_domain+0x56/0x112
[ 1.170000] 67c3ffc8: [<604f0c88>] kernel_init+0xb6/0xba
[ 1.170000] 67c3ffd8: [<6001c374>] new_thread_handler+0x7a/0x95
[ 1.170000]
[ 1.170000]
[ 1.170000] Modules linked in:
[ 1.170000] Pid: 1, comm: swapper Not tainted 3.11.8
[ 1.170000] RIP: 0033:[<000000006048c0a7>]
[ 1.170000] RSP: 00007fff11356248 EFLAGS: 00000246
[ 1.170000] RAX: 0000000000000000 RBX: 00000000000048ec RCX:
ffffffffffffffff
[ 1.170000] RDX: 0000000000000000 RSI: 0000000000000013 RDI:
00000000000048ec
[ 1.170000] RBP: 00007fff11356270 R08: 0000000000000000 R09:
00007fff11356270
[ 1.170000] R10: 0000000000000000 R11: 0000000000000246 R12:
00000000000048e8
[ 1.170000] R13: 00007fff11356458 R14: 00007fff11356e3a R15:
0000000000000007
[ 1.170000] Call Trace:
[ 1.170000] 67c3fe38: [<6001d2f6>] show_trace+0x8e/0x95
[ 1.170000] 67c3fe48: [<6001e808>] panic_exit+0x2b/0x41
[ 1.170000] 67c3fe68: [<6004c298>] notifier_call_chain+0x32/0x5c
[ 1.170000] 67c3fea8: [<6004c2cb>] __atomic_notifier_call_chain+0x9/0xb
[ 1.170000] 67c3feb8: [<6004c2dc>] atomic_notifier_call_chain+0xf/0x11
[ 1.170000] 67c3fec8: [<604f1e56>] panic+0x112/0x1ee
[ 1.170000] 67c3fef8: [<6004c888>] put_cred_rcu+0x0/0xa4
[ 1.170000] 67c3ff08: [<6004c888>] put_cred_rcu+0x0/0xa4
[ 1.170000] 67c3ff38: [<600ac7ce>] do_execve_common+0x49b/0x4f0
[ 1.170000] 67c3ff48: [<6004d600>]
async_synchronize_cookie_domain+0x56/0x112
[ 1.170000] 67c3ffc8: [<604f0c88>] kernel_init+0xb6/0xba
[ 1.170000] 67c3ffd8: [<6001c374>] new_thread_handler+0x7a/0x95
[ 1.170000]
Aborted
To summarize,i'm getting a kernel panic due to the missing of init. Please
help me in fixing the problem
Thanks & regards,
Tamil
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