Attachment 144345 Details for Bug 220726 – dmesg output

dmesg output

kernel-selinux-ssh.log (text/plain), 9.01 KB, created by Ralf Ertzinger on 2006-12-24 18:07:43 UTC

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Creator: Ralf Ertzinger

Created: 2006-12-24 18:07:43 UTC

Size: 9.01 KB

patch

obsolete

>======================================================
>[ INFO: soft-safe -> soft-unsafe lock order detected ]
>2.6.19-1.2891.fc7 #1
>------------------------------------------------------
>sshd/2344 [HC0[0]:SC0[1]:HE1:SE0] is trying to acquire:
> (&ssec->nlbl_lock){--..}, at: [<c04cec37>] selinux_netlbl_socket_setsid+0xbb/0x123
>
>and this task is already holding:
> (af_callback_keys + sk->sk_family#5){-.-+}, at: [<c05daa1c>] inet_accept+0x70/0xb5
>which would create a new lock dependency:
> (af_callback_keys + sk->sk_family#5){-.-+} -> (&ssec->nlbl_lock){--..}
>
>but this new dependency connects a soft-irq-safe lock:
> (af_callback_keys + sk->sk_family#5){-.-+}
>... which became soft-irq-safe at:
>  [<c043fff1>] __lock_acquire+0x37d/0x9f8
>  [<c044094d>] lock_acquire+0x56/0x6f
>  [<c05fbdee>] _read_lock+0x2b/0x38
>  [<c0594ed1>] sock_def_write_space+0x18/0x93
>  [<c059512c>] sock_wfree+0x27/0x3c
>  [<c05969c5>] __kfree_skb+0xa0/0x100
>  [<c0596a53>] kfree_skb+0x2e/0x30
>  [<c059a5e2>] dev_kfree_skb_any+0x7a/0x7e
>  [<e0271051>] e1000_unmap_and_free_tx_resource+0x1e/0x27 [e1000]
>  [<e0272ba8>] e1000_clean_tx_irq+0x86/0x278 [e1000]
>  [<e0274214>] e1000_clean+0x58/0x22d [e1000]
>  [<c059ca46>] net_rx_action+0xa1/0x1a8
>  [<c042bf5a>] __do_softirq+0x6f/0xe2
>  [<c04063a1>] do_softirq+0x61/0xc7
>  [<ffffffff>] 0xffffffff
>
>to a soft-irq-unsafe lock:
> (&ssec->nlbl_lock){--..}
>... which became soft-irq-unsafe at:
>...  [<c044007d>] __lock_acquire+0x409/0x9f8
>  [<c044094d>] lock_acquire+0x56/0x6f
>  [<c05fbc89>] _spin_lock+0x2b/0x38
>  [<c04cec37>] selinux_netlbl_socket_setsid+0xbb/0x123
>  [<c04d0c92>] selinux_netlbl_socket_post_create+0x2d/0x2f
>  [<c04c807b>] selinux_socket_post_create+0x156/0x15c
>  [<c059213c>] __sock_create+0x179/0x1b2
>  [<c05921ae>] sock_create+0x1a/0x1f
>  [<c0592435>] sys_socket+0x1b/0x3c
>  [<c0592cba>] sys_socketcall+0x77/0x241
>  [<c0404050>] syscall_call+0x7/0xb
>  [<ffffffff>] 0xffffffff
>
>other info that might help us debug this:
>
>3 locks held by sshd/2344:
> #0:  (sk_lock-AF_INET6){--..}, at: [<c05da9dd>] inet_accept+0x31/0xb5
> #1:  (af_callback_keys + sk->sk_family#5){-.-+}, at: [<c05daa1c>] inet_accept+0x70/0xb5
> #2:  (policy_rwlock){..-?}, at: [<c04cebd0>] selinux_netlbl_socket_setsid+0x54/0x123
>
>the soft-irq-safe lock's dependencies:
>-> (af_callback_keys + sk->sk_family#5){-.-+} ops: 0 {
>   initial-use  at:
>                        [<c0440098>] __lock_acquire+0x424/0x9f8
>                        [<c044094d>] lock_acquire+0x56/0x6f
>                        [<c05fbd3b>] _write_lock_bh+0x30/0x3d
>                        [<c0593d42>] sk_common_release+0x2a/0x9c
>                        [<e051c349>] udp_lib_close+0x8/0xa [ipv6]
>                        [<c05da570>] inet_release+0x43/0x49
>                        [<e050a2bc>] inet6_release+0x28/0x2c [ipv6]
>                        [<c0591f72>] sock_release+0x17/0x68
>                        [<c05921e0>] sock_close+0x2d/0x33
>                        [<c047959b>] __fput+0xbe/0x168
>                        [<c047965c>] fput+0x17/0x19
>                        [<c0476f5d>] filp_close+0x54/0x5c
>                        [<c0477ee1>] sys_close+0x78/0xb0
>                        [<c0404050>] syscall_call+0x7/0xb
>                        [<ffffffff>] 0xffffffff
>   hardirq-on-W at:
>                        [<c0440056>] __lock_acquire+0x3e2/0x9f8
>                        [<c044094d>] lock_acquire+0x56/0x6f
>                        [<c05fbd3b>] _write_lock_bh+0x30/0x3d
>                        [<c0593d42>] sk_common_release+0x2a/0x9c
>                        [<e051c349>] udp_lib_close+0x8/0xa [ipv6]
>                        [<c05da570>] inet_release+0x43/0x49
>                        [<e050a2bc>] inet6_release+0x28/0x2c [ipv6]
>                        [<c0591f72>] sock_release+0x17/0x68
>                        [<c05921e0>] sock_close+0x2d/0x33
>                        [<c047959b>] __fput+0xbe/0x168
>                        [<c047965c>] fput+0x17/0x19
>                        [<c0476f5d>] filp_close+0x54/0x5c
>                        [<c0477ee1>] sys_close+0x78/0xb0
>                        [<c0404050>] syscall_call+0x7/0xb
>                        [<ffffffff>] 0xffffffff
>   in-softirq-R at:
>                        [<c043fff1>] __lock_acquire+0x37d/0x9f8
>                        [<c044094d>] lock_acquire+0x56/0x6f
>                        [<c05fbdee>] _read_lock+0x2b/0x38
>                        [<c0594ed1>] sock_def_write_space+0x18/0x93
>                        [<c059512c>] sock_wfree+0x27/0x3c
>                        [<c05969c5>] __kfree_skb+0xa0/0x100
>                        [<c0596a53>] kfree_skb+0x2e/0x30
>                        [<c059a5e2>] dev_kfree_skb_any+0x7a/0x7e
>                        [<e0271051>] e1000_unmap_and_free_tx_resource+0x1e/0x27 [e1000]
>                        [<e0272ba8>] e1000_clean_tx_irq+0x86/0x278 [e1000]
>                        [<e0274214>] e1000_clean+0x58/0x22d [e1000]
>                        [<c059ca46>] net_rx_action+0xa1/0x1a8
>                        [<c042bf5a>] __do_softirq+0x6f/0xe2
>                        [<c04063a1>] do_softirq+0x61/0xc7
>                        [<ffffffff>] 0xffffffff
>   hardirq-on-R at:
>                        [<c044001f>] __lock_acquire+0x3ab/0x9f8
>                        [<c044094d>] lock_acquire+0x56/0x6f
>                        [<c05fbdee>] _read_lock+0x2b/0x38
>                        [<c0594ed1>] sock_def_write_space+0x18/0x93
>                        [<c059512c>] sock_wfree+0x27/0x3c
>                        [<c05969c5>] __kfree_skb+0xa0/0x100
>                        [<c0596a53>] kfree_skb+0x2e/0x30
>                        [<c059a5e2>] dev_kfree_skb_any+0x7a/0x7e
>                        [<e0271051>] e1000_unmap_and_free_tx_resource+0x1e/0x27 [e1000]
>                        [<e0272ba8>] e1000_clean_tx_irq+0x86/0x278 [e1000]
>                        [<e0274214>] e1000_clean+0x58/0x22d [e1000]
>                        [<c059ca46>] net_rx_action+0xa1/0x1a8
>                        [<c042bf5a>] __do_softirq+0x6f/0xe2
>                        [<c04063a1>] do_softirq+0x61/0xc7
>                        [<ffffffff>] 0xffffffff
> }
> ... key      at: [<c09f67b0>] af_callback_keys+0x50/0x100
>
>the soft-irq-unsafe lock's dependencies:
>-> (&ssec->nlbl_lock){--..} ops: 0 {
>   initial-use  at:
>                        [<c0440098>] __lock_acquire+0x424/0x9f8
>                        [<c044094d>] lock_acquire+0x56/0x6f
>                        [<c05fbc89>] _spin_lock+0x2b/0x38
>                        [<c04cec37>] selinux_netlbl_socket_setsid+0xbb/0x123
>                        [<c04d0c92>] selinux_netlbl_socket_post_create+0x2d/0x2f
>                        [<c04c807b>] selinux_socket_post_create+0x156/0x15c
>                        [<c059213c>] __sock_create+0x179/0x1b2
>                        [<c05921ae>] sock_create+0x1a/0x1f
>                        [<c0592435>] sys_socket+0x1b/0x3c
>                        [<c0592cba>] sys_socketcall+0x77/0x241
>                        [<c0404050>] syscall_call+0x7/0xb
>                        [<ffffffff>] 0xffffffff
>   softirq-on-W at:
>                        [<c044007d>] __lock_acquire+0x409/0x9f8
>                        [<c044094d>] lock_acquire+0x56/0x6f
>                        [<c05fbc89>] _spin_lock+0x2b/0x38
>                        [<c04cec37>] selinux_netlbl_socket_setsid+0xbb/0x123
>                        [<c04d0c92>] selinux_netlbl_socket_post_create+0x2d/0x2f
>                        [<c04c807b>] selinux_socket_post_create+0x156/0x15c
>                        [<c059213c>] __sock_create+0x179/0x1b2
>                        [<c05921ae>] sock_create+0x1a/0x1f
>                        [<c0592435>] sys_socket+0x1b/0x3c
>                        [<c0592cba>] sys_socketcall+0x77/0x241
>                        [<c0404050>] syscall_call+0x7/0xb
>                        [<ffffffff>] 0xffffffff
>   hardirq-on-W at:
>                        [<c0440056>] __lock_acquire+0x3e2/0x9f8
>                        [<c044094d>] lock_acquire+0x56/0x6f
>                        [<c05fbc89>] _spin_lock+0x2b/0x38
>                        [<c04cec37>] selinux_netlbl_socket_setsid+0xbb/0x123
>                        [<c04d0c92>] selinux_netlbl_socket_post_create+0x2d/0x2f
>                        [<c04c807b>] selinux_socket_post_create+0x156/0x15c
>                        [<c059213c>] __sock_create+0x179/0x1b2
>                        [<c05921ae>] sock_create+0x1a/0x1f
>                        [<c0592435>] sys_socket+0x1b/0x3c
>                        [<c0592cba>] sys_socketcall+0x77/0x241
>                        [<c0404050>] syscall_call+0x7/0xb
>                        [<ffffffff>] 0xffffffff
> }
> ... key      at: [<c09ebb20>] __key.27522+0x0/0x8
>
>stack backtrace:
> [<c04051c1>] show_trace_log_lvl+0x1a/0x2f
> [<c0405766>] show_trace+0x12/0x14
> [<c04057ea>] dump_stack+0x16/0x18
> [<c043fbe0>] check_usage+0x242/0x24c
> [<c04404f3>] __lock_acquire+0x87f/0x9f8
> [<c044094d>] lock_acquire+0x56/0x6f
> [<c05fbc89>] _spin_lock+0x2b/0x38
> [<c04cec37>] selinux_netlbl_socket_setsid+0xbb/0x123
> [<c04d0f40>] selinux_netlbl_sock_graft+0xc7/0xcf
> [<c04c4b74>] selinux_sock_graft+0x32/0x36
> [<c05daa3b>] inet_accept+0x8f/0xb5
> [<c0592b93>] sys_accept+0xd0/0x180
> [<c0592d13>] sys_socketcall+0xd0/0x241
> [<c0404050>] syscall_call+0x7/0xb
> =======================

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Attachments on bug 220726: 144345 | 145073 | 145075 | 145076