Casey Schaufler wrote:
The Smack patch and Paul Moore's netlabel API patch,
together for 2.6.24-rc1. Paul's changes are identical
to the previous posting, but it's been a while so they're
here again.
The sole intent of change has been to address locking
and/or list processing issues. Please don't hesitate to
point out any problems that you might see or suggest
alternatives where things might not be to your liking.
This version is aimed at 2.6.24, and has been tested
against 2.6.24-rc1.
with both of these patches applied to 2.6.24-rc1 I get the following
oops when nfsd starts:
BUG: unable to handle kernel NULL pointer dereference at virtual address
0000013c
printing eip: c01d7e39 *pde = 00000000
Oops: 0000 [#1] SMP
Pid: 4094, comm: lockd Not tainted (2.6.24-rc1 #3)
EIP: 0060:[<c01d7e39>] EFLAGS: 00010246 CPU: 0
EIP is at smack_socket_post_create+0x46/0xd2
EAX: c19440c0 EBX: 00000000 ECX: 00000001 EDX: c168ddd8
ESI: 00000002 EDI: 00000000 EBP: 00000006 ESP: c168ddd8
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process lockd (pid: 4094, ti=c168c000 task=c1577ab0 task.ti=c168c000)
Stack: c1464c00 c01d7ac6 c19440e8 c01d4fb4 c016544c c038c660 c19440c0
00000001
c01d53eb 00000006 00000001 fffffff4 c0283374 00000006 00000001
00000002
c1944540 c168df34 c1944540 00000800 c02833b6 c168df34 c1944540
c2039d8c
Call Trace:
[<c01d7ac6>] smack_inode_alloc_security+0x14/0x24
[<c01d4fb4>] security_inode_alloc+0x16/0x17
[<c016544c>] alloc_inode+0x118/0x170
[<c01d53eb>] security_socket_post_create+0x1f/0x23
[<c0283374>] sock_create_lite+0x4d/0x6c
[<c02833b6>] kernel_accept+0x23/0x5a
[<c02d8aac>] svc_tcp_recvfrom+0xf9/0x7e7
[<c0120be5>] run_timer_softirq+0x2f/0x154
[<c01125df>] __update_rq_clock+0x19/0x156
[<c012e30c>] clocksource_get_next+0x39/0x3f
[<c012d55b>] update_wall_time+0x54b/0x6af
[<c02e2852>] schedule+0x575/0x58f
[<c02d87c1>] svc_udp_recvfrom+0x175/0x367
[<c01279fc>] __rcu_process_callbacks+0xeb/0x153
[<c02e294d>] schedule_timeout+0x13/0x8d
[<c02d7b4d>] svc_sock_release+0xdd/0x149
[<c02d8596>] svc_recv+0x2df/0x395
[<c0103078>] apic_timer_interrupt+0x28/0x30
[<c0114e8f>] default_wake_function+0x0/0x8
[<c01c881c>] lockd+0xe3/0x1f3
[<c0116fa2>] schedule_tail+0x18/0x52
[<c01024f6>] ret_from_fork+0x6/0x1c
[<c01c8739>] lockd+0x0/0x1f3
[<c01c8739>] lockd+0x0/0x1f3
[<c01031fb>] kernel_thread_helper+0x7/0x10
=======================
Code: 38 c0 75 0c 64 a1 00 c0 3d c0 8b 80 c0 04 00 00 e8 31 f5 ff ff 89
83 64 01 00 00 31 ff 83 fe 02 0f 85 88 00 00 00 8b 5b 14 89 e2 <8b> 83
3c 01 00 00 c7 04 24 00 00 00 00 c7 44 24 04 00 00 00 00
EIP: [<c01d7e39>] smack_socket_post_create+0x46/0xd2 SS:ESP 0068:c168ddd8
BUG: unable to handle kernel NULL pointer dereference at virtual address
0000013c
printing eip: c01d7e39 *pde = 00000000
Oops: 0000 [#2] SMP
Pid: 4095, comm: nfsd Tainted: G D (2.6.24-rc1 #3)
EIP: 0060:[<c01d7e39>] EFLAGS: 00010246 CPU: 0
EIP is at smack_socket_post_create+0x46/0xd2
EAX: c1944240 EBX: 00000000 ECX: 00000001 EDX: c1603e00
ESI: 00000002 EDI: 00000000 EBP: 00000006 ESP: c1603e00
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process nfsd (pid: 4095, ti=c1602000 task=c1559ab0 task.ti=c1602000)
Stack: c1464c00 c01d7ac6 c1944268 c01d4fb4 c016544c c038c660 c1944240
00000001
c01d53eb 00000006 00000001 fffffff4 c0283374 00000006 00000001
00000002
c19443c0 c1603f5c c19443c0 00000800 c02833b6 c1603f5c c19443c0
c16c9e00
Call Trace:
[<c01d7ac6>] smack_inode_alloc_security+0x14/0x24
[<c01d4fb4>] security_inode_alloc+0x16/0x17
[<c016544c>] alloc_inode+0x118/0x170
[<c01d53eb>] security_socket_post_create+0x1f/0x23
[<c0283374>] sock_create_lite+0x4d/0x6c
[<c02833b6>] kernel_accept+0x23/0x5a
[<c02d8aac>] svc_tcp_recvfrom+0xf9/0x7e7
[<c0111b7b>] __wake_up_common+0x32/0x5c
[<c02e37c3>] _spin_lock_bh+0x8/0x18
[<c0284761>] lock_sock_nested+0x84/0x8c
[<c02d87c1>] svc_udp_recvfrom+0x175/0x367
[<c02d7b4d>] svc_sock_release+0xdd/0x149
[<c02d8596>] svc_recv+0x2df/0x395
[<c0113210>] sched_move_task+0xa0/0xa7
[<c0114e8f>] default_wake_function+0x0/0x8
[<c01bb125>] nfsd+0xcc/0x27b
[<c01bb059>] nfsd+0x0/0x27b
[<c01031fb>] kernel_thread_helper+0x7/0x10
=======================
Code: 38 c0 75 0c 64 a1 00 c0 3d c0 8b 80 c0 04 00 00 e8 31 f5 ff ff 89
83 64 01 00 00 31 ff 83 fe 02 0f 85 88 00 00 00 8b 5b 14 89 e2 <8b> 83
3c 01 00 00 c7 04 24 00 00 00 00 c7 44 24 04 00 00 00 00
EIP: [<c01d7e39>] smack_socket_post_create+0x46/0xd2 SS:ESP 0068:c1603e00
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