Re: [LSM] Kernel panic - not syncing: No working init found.

[Casey Schaufler <casey@schaufler-ca.com>]

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On 11/16/2014 10:08 PM, Yuanhan Liu wrote:
> FYI, we noticed the below changes on(TBH, I don't know the bisect is
> correct or not; sorry for the noise if not)

The patch below fixes this problem.

>
> git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git lsm/stacking
> commit 58c4f9e3be81a85839ea229b1dd36bf55232d440 ("LSM: Refactor existing LSM stacking")
>
>
> +------------------------------------------------+------------+------------+
> |                                                | c9979f3c6e | 58c4f9e3be |
> +------------------------------------------------+------------+------------+
> | boot_successes                                 | 15         | 0          |
> | early-boot-hang                                | 1          |            |
> | boot_failures                                  | 0          | 15         |
> | Kernel_panic-not_syncing:No_working_init_found | 0          | 15         |
> | backtrace:panic                                | 0          | 15         |
> +------------------------------------------------+------------+------------+
>
>
> [    3.437279] Starting init: /sbin/init exists but couldn't execute it (error -12)
> [    3.438655] Starting init: /etc/init exists but couldn't execute it (error -13)
> [    3.440136] Starting init: /bin/sh exists but couldn't execute it (error -12)
> [    3.441487] Kernel panic - not syncing: No working init found.  Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.
> [    3.443352] CPU: 0 PID: 1 Comm: swapper Not tainted 3.18.0-rc4-g49aba53 #1949
> [    3.443352]  00000000 f783d540 80017f88 8138c3bd 80017fa0 8138b30b 815e1f40 f783d540
> [    3.443352]  815e1f40 00000000 80017fac 81389523 8152ab4d 80016000 813918e0 81389474
> [    3.443352]  00000000 00000000 00000000 00000000 00000000 00000000 0000007b 0000007b
> [    3.443352] Call Trace:
> [    3.443352]  [<8138c3bd>] dump_stack+0x16/0x18
> [    3.443352]  [<8138b30b>] panic+0x86/0x19e
> [    3.443352]  [<81389523>] kernel_init+0xaf/0xb3
> [    3.443352]  [<813918e0>] ret_from_kernel_thread+0x20/0x30
> [    3.443352]  [<81389474>] ? rest_init+0xa2/0xa2
> [    3.443352] Kernel Offset: 0x0 from 0x81000000 (relocation range: 0x80000000-0x947fdfff)
>
> Elapsed time: 10
>
>
>
> 	--yliu
>
>
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> LKP(a)linux.intel.com

 include/linux/security.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/security.h b/include/linux/security.h
index 5a6c839..5cd3e93 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -27,6 +27,7 @@
 #include <linux/slab.h>
 #include <linux/err.h>
 #include <linux/string.h>
+#include <linux/mm.h>
 
 struct linux_binprm;
 struct cred;
@@ -1995,7 +1996,7 @@ static inline int security_settime(const struct timespec *ts,
 
 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 {
-	return cap_vm_enough_memory(mm, pages);
+	return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
 }
 
 static inline int security_bprm_set_creds(struct linux_binprm *bprm)


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