Bug 9825 - GPF in kernel when /sbin/ss used for display DCCP sockets.
Summary: GPF in kernel when /sbin/ss used for display DCCP sockets.
Status: RESOLVED CODE_FIX
Alias: None
Product: Networking
Classification: Unclassified
Component: Other (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: Arnaldo Carvalho de Melo
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2008-01-26 13:18 UTC by Misha Labjuk
Modified: 2008-01-27 18:29 UTC (History)
1 user (show)

See Also:
Kernel Version: 2.6.24
Subsystem:
Regression: Yes
Bisected commit-id:

Attachments
proper error handling for inet_diag when there is no handle for a netlink message (915 bytes, patch)
2008-01-27 11:53 UTC, Arnaldo Carvalho de Melo 		Details | Diff
Add an attachment (proposed patch, testcase, etc.)

Description Misha Labjuk 2008-01-26 13:18:38 UTC 
Latest working kernel version: 2.6.23.14
Earliest failing kernel version:2.6.24
Distribution:gentoo 
Hardware Environment: i386
Software Environment: ss utility, iproute2-ss070710
Problem Description:
GPF in kernel when ss used for display DCCP sockets.

Jan 26 23:38:03 host general protection fault: 0000 [#1] PREEMPT
Jan 26 23:38:03 host Modules linked in: iptable_mangle iptable_nat nf_nat ipt_REJECT xt_tcpudp nf_conntrack_ipv4 xt_state ipt_ULOG iptable_filter ip_tables x_
Jan 26 23:38:03 host
Jan 26 23:38:03 host Pid: 5573, comm: ss Not tainted (2.6.24 #1)
Jan 26 23:38:03 host EIP: 0060:[<c031a14f>] EFLAGS: 00010282 CPU: 0
Jan 26 23:38:03 host EIP is at inet_diag_dump+0x2a/0x88b
Jan 26 23:38:03 host EAX: fffffffe EBX: e7095810 ECX: 00000001 EDX: fffffffe
Jan 26 23:38:03 host ESI: ee264a00 EDI: e7035840 EBP: 000015c5 ESP: e70fdbd0
Jan 26 23:38:03 host DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
Jan 26 23:38:03 host Process ss (pid: 5573, ti=e70fc000 task=e70f3680 task.ti=e70fc000)
Jan 26 23:38:03 host Stack: 00000001 c040c164 e70f3680 000040d0 00000000 e7035840 ee264a00 c01690a7
Jan 26 23:38:03 host effc6009 e70fdc20 e7095810 000240d0 c040c6c0 00000010 c14e02c0 00000282
Jan 26 23:38:03 host 8cab2e5a 000040d0 00000f00 000000d0 c0426e80 c0147e38 ee264a00 c02c6dff
Jan 26 23:38:03 host Call Trace:
Jan 26 23:38:03 host [<c01690a7>] permission+0x51/0xe7
Jan 26 23:38:03 host [<c0147e38>] __get_free_pages+0x4d/0x55
Jan 26 23:38:03 host [<c02c6dff>] __alloc_skb+0x4b/0xfa
Jan 26 23:38:03 host [<c02de333>] netlink_dump+0x47/0x178
Jan 26 23:38:03 host [<c01426df>] file_read_actor+0xe1/0x10c
Jan 26 23:38:03 host [<c02e062e>] netlink_dump_start+0xb8/0x15e
Jan 26 23:38:03 host [<c0319bf0>] inet_diag_rcv_msg+0x5c/0x591
Jan 26 23:38:03 host [<c031a125>] inet_diag_dump+0x0/0x88b
Jan 26 23:38:03 host [<c0319b94>] inet_diag_rcv_msg+0x0/0x591
Jan 26 23:38:03 host [<c0319152>] inet_diag_rcv+0x0/0x24
Jan 26 23:38:03 host [<c02df335>] netlink_rcv_skb+0x6d/0x8e
Jan 26 23:38:03 host [<c031916b>] inet_diag_rcv+0x19/0x24
Jan 26 23:38:03 host [<c02df0e0>] netlink_unicast+0x1fa/0x224
Jan 26 23:38:03 host [<c02df86e>] netlink_sendmsg+0x1d0/0x2b2
Jan 26 23:38:03 host [<c01690a7>] permission+0x51/0xe7
Jan 26 23:38:03 host [<c02c1423>] sock_sendmsg+0xbb/0xdd
Jan 26 23:38:03 host [<c012c951>] autoremove_wake_function+0x0/0x37
Jan 26 23:38:03 host [<c013090c>] __atomic_notifier_call_chain+0x24/0x4a
Jan 26 23:38:03 host [<c0130949>] atomic_notifier_call_chain+0x17/0x1b
Jan 26 23:38:03 host [<c0251ad0>] notify_update+0x1f/0x23
Jan 26 23:38:03 host [<c0253f0f>] do_con_write+0x33d/0x1aac
Jan 26 23:38:03 host [<c0253f0f>] do_con_write+0x33d/0x1aac
Jan 26 23:38:03 host [<c02c8369>] verify_iovec+0x2a/0x91
Jan 26 23:38:03 host [<c02c1572>] sys_sendmsg+0x12d/0x243
Jan 26 23:38:03 host [<c024b40f>] n_tty_ioctl+0x0/0x1e1
Jan 26 23:38:03 host [<c0247475>] tty_ioctl+0x114/0xeb5
Jan 26 23:38:03 host [<c0142987>] find_lock_page+0x20/0xab
Jan 26 23:38:03 host [<c0144d19>] filemap_fault+0x1d4/0x43e
Jan 26 23:38:03 host [<c02c3618>] sk_prot_alloc+0x70/0x8a
Jan 26 23:38:03 host [<c02c4d19>] sk_alloc+0x3d/0x47
Jan 26 23:38:03 host [<c0172eee>] d_alloc+0x1b/0x192
Jan 26 23:38:03 host [<c0172eb3>] d_instantiate+0x3b/0x5b
Jan 26 23:38:03 host [<c02c1161>] sock_attach_fd+0x77/0xa2
Jan 26 23:38:03 host [<c02c27d8>] sys_socketcall+0x24f/0x271
Jan 26 23:38:03 host [<c0115952>] do_page_fault+0x0/0x5ce
Jan 26 23:38:03 host [<c0103e72>] sysenter_past_esp+0x5f/0x85
Jan 26 23:38:03 host [<c0350000>] __xfrm6_tunnel_spi_lookup+0x26/0x72
Jan 26 23:38:03 host =======================
Jan 26 23:38:03 host Code: ff 55 57 56 53 83 ec 74 89 44 24 18 89 54 24 14 8b 5a 04 0f b7 43 04 e8 36 f0 ff ff 85 c0 0f 84 a4 02 00 00 83 c3 10 89 5c 24 28 <8
Jan 26 23:38:03 host EIP: [<c031a14f>] inet_diag_dump+0x2a/0x88b SS:ESP 0068:e70fdbd0
Jan 26 23:38:03 host ---[ end trace 57d7a9039abd2ede ]---

All ss runned later sleep forewer in D state. Kill -9 don't work.

Steps to reproduce:
run /sbin/ss -d
Comment 1 Anonymous Emailer 2008-01-26 22:33:31 UTC 
Reply-To: akpm@linux-foundation.org

> On Sat, 26 Jan 2008 13:18:40 -0800 (PST) bugme-daemon@bugzilla.kernel.org
> wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=9825
> 
>            Summary: GPF in kernel when /sbin/ss used for display DCCP
>                     sockets.
>            Product: Networking
>            Version: 2.5
>      KernelVersion: 2.6.24
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Other
>         AssignedTo: acme@ghostprotocols.net
>         ReportedBy: spike@ml.yaroslavl.ru
> 
> 
> Latest working kernel version: 2.6.23.14
> Earliest failing kernel version:2.6.24

A regression in 2.6.24.

> Distribution:gentoo 
> Hardware Environment: i386
> Software Environment: ss utility, iproute2-ss070710
> Problem Description:
> GPF in kernel when ss used for display DCCP sockets.
> 
> Jan 26 23:38:03 host general protection fault: 0000 [#1] PREEMPT
> Jan 26 23:38:03 host Modules linked in: iptable_mangle iptable_nat nf_nat
> ipt_REJECT xt_tcpudp nf_conntrack_ipv4 xt_state ipt_ULOG iptable_filter
> ip_tables x_
> Jan 26 23:38:03 host
> Jan 26 23:38:03 host Pid: 5573, comm: ss Not tainted (2.6.24 #1)
> Jan 26 23:38:03 host EIP: 0060:[<c031a14f>] EFLAGS: 00010282 CPU: 0
> Jan 26 23:38:03 host EIP is at inet_diag_dump+0x2a/0x88b
> Jan 26 23:38:03 host EAX: fffffffe EBX: e7095810 ECX: 00000001 EDX: fffffffe
> Jan 26 23:38:03 host ESI: ee264a00 EDI: e7035840 EBP: 000015c5 ESP: e70fdbd0
> Jan 26 23:38:03 host DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
> Jan 26 23:38:03 host Process ss (pid: 5573, ti=e70fc000 task=e70f3680
> task.ti=e70fc000)
> Jan 26 23:38:03 host Stack: 00000001 c040c164 e70f3680 000040d0 00000000
> e7035840 ee264a00 c01690a7
> Jan 26 23:38:03 host effc6009 e70fdc20 e7095810 000240d0 c040c6c0 00000010
> c14e02c0 00000282
> Jan 26 23:38:03 host 8cab2e5a 000040d0 00000f00 000000d0 c0426e80 c0147e38
> ee264a00 c02c6dff
> Jan 26 23:38:03 host Call Trace:
> Jan 26 23:38:03 host [<c01690a7>] permission+0x51/0xe7
> Jan 26 23:38:03 host [<c0147e38>] __get_free_pages+0x4d/0x55
> Jan 26 23:38:03 host [<c02c6dff>] __alloc_skb+0x4b/0xfa
> Jan 26 23:38:03 host [<c02de333>] netlink_dump+0x47/0x178
> Jan 26 23:38:03 host [<c01426df>] file_read_actor+0xe1/0x10c
> Jan 26 23:38:03 host [<c02e062e>] netlink_dump_start+0xb8/0x15e
> Jan 26 23:38:03 host [<c0319bf0>] inet_diag_rcv_msg+0x5c/0x591
> Jan 26 23:38:03 host [<c031a125>] inet_diag_dump+0x0/0x88b
> Jan 26 23:38:03 host [<c0319b94>] inet_diag_rcv_msg+0x0/0x591
> Jan 26 23:38:03 host [<c0319152>] inet_diag_rcv+0x0/0x24
> Jan 26 23:38:03 host [<c02df335>] netlink_rcv_skb+0x6d/0x8e
> Jan 26 23:38:03 host [<c031916b>] inet_diag_rcv+0x19/0x24
> Jan 26 23:38:03 host [<c02df0e0>] netlink_unicast+0x1fa/0x224
> Jan 26 23:38:03 host [<c02df86e>] netlink_sendmsg+0x1d0/0x2b2
> Jan 26 23:38:03 host [<c01690a7>] permission+0x51/0xe7
> Jan 26 23:38:03 host [<c02c1423>] sock_sendmsg+0xbb/0xdd
> Jan 26 23:38:03 host [<c012c951>] autoremove_wake_function+0x0/0x37
> Jan 26 23:38:03 host [<c013090c>] __atomic_notifier_call_chain+0x24/0x4a
> Jan 26 23:38:03 host [<c0130949>] atomic_notifier_call_chain+0x17/0x1b
> Jan 26 23:38:03 host [<c0251ad0>] notify_update+0x1f/0x23
> Jan 26 23:38:03 host [<c0253f0f>] do_con_write+0x33d/0x1aac
> Jan 26 23:38:03 host [<c0253f0f>] do_con_write+0x33d/0x1aac
> Jan 26 23:38:03 host [<c02c8369>] verify_iovec+0x2a/0x91
> Jan 26 23:38:03 host [<c02c1572>] sys_sendmsg+0x12d/0x243
> Jan 26 23:38:03 host [<c024b40f>] n_tty_ioctl+0x0/0x1e1
> Jan 26 23:38:03 host [<c0247475>] tty_ioctl+0x114/0xeb5
> Jan 26 23:38:03 host [<c0142987>] find_lock_page+0x20/0xab
> Jan 26 23:38:03 host [<c0144d19>] filemap_fault+0x1d4/0x43e
> Jan 26 23:38:03 host [<c02c3618>] sk_prot_alloc+0x70/0x8a
> Jan 26 23:38:03 host [<c02c4d19>] sk_alloc+0x3d/0x47
> Jan 26 23:38:03 host [<c0172eee>] d_alloc+0x1b/0x192
> Jan 26 23:38:03 host [<c0172eb3>] d_instantiate+0x3b/0x5b
> Jan 26 23:38:03 host [<c02c1161>] sock_attach_fd+0x77/0xa2
> Jan 26 23:38:03 host [<c02c27d8>] sys_socketcall+0x24f/0x271
> Jan 26 23:38:03 host [<c0115952>] do_page_fault+0x0/0x5ce
> Jan 26 23:38:03 host [<c0103e72>] sysenter_past_esp+0x5f/0x85
> Jan 26 23:38:03 host [<c0350000>] __xfrm6_tunnel_spi_lookup+0x26/0x72
> Jan 26 23:38:03 host =======================
> Jan 26 23:38:03 host Code: ff 55 57 56 53 83 ec 74 89 44 24 18 89 54 24 14 8b
> 5a 04 0f b7 43 04 e8 36 f0 ff ff 85 c0 0f 84 a4 02 00 00 83 c3 10 89 5c 24 28
> <8
> Jan 26 23:38:03 host EIP: [<c031a14f>] inet_diag_dump+0x2a/0x88b SS:ESP
> 0068:e70fdbd0
> Jan 26 23:38:03 host ---[ end trace 57d7a9039abd2ede ]---
> 
> All ss runned later sleep forewer in D state. Kill -9 don't work.
> 
> Steps to reproduce:
> run /sbin/ss -d
> 
>
Comment 2 Arnaldo Carvalho de Melo 2008-01-27 07:44:29 UTC 
Em Sat, Jan 26, 2008 at 10:33:34PM -0800, bugme-daemon@bugzilla.kernel.org escreveu:
> http://bugzilla.kernel.org/show_bug.cgi?id=9825
> ------- Comment #1 from anonymous@kernel-bugs.osdl.org  2008-01-26 22:33
> -------
> Reply-To: akpm@linux-foundation.org
> 
> > On Sat, 26 Jan 2008 13:18:40 -0800 (PST) bugme-daemon@bugzilla.kernel.org
> wrote:
> > http://bugzilla.kernel.org/show_bug.cgi?id=9825
> > 
> >            Summary: GPF in kernel when /sbin/ss used for display DCCP
> >                     sockets.
> >            Product: Networking
> >            Version: 2.5
> >      KernelVersion: 2.6.24
> >           Platform: All
> >         OS/Version: Linux
> >               Tree: Mainline
> >             Status: NEW
> >           Severity: normal
> >           Priority: P1
> >          Component: Other
> >         AssignedTo: acme@ghostprotocols.net
> >         ReportedBy: spike@ml.yaroslavl.ru
> > 
> > 
> > Latest working kernel version: 2.6.23.14
> > Earliest failing kernel version:2.6.24
> 
> A regression in 2.6.24.
> 
> > Distribution:gentoo 
> > Hardware Environment: i386
> > Software Environment: ss utility, iproute2-ss070710
> > Problem Description:
> > GPF in kernel when ss used for display DCCP sockets.
> > 
> > Jan 26 23:38:03 host general protection fault: 0000 [#1] PREEMPT
> > Jan 26 23:38:03 host Modules linked in: iptable_mangle iptable_nat nf_nat
> > ipt_REJECT xt_tcpudp nf_conntrack_ipv4 xt_state ipt_ULOG iptable_filter
> > ip_tables x_
> > Jan 26 23:38:03 host
> > Jan 26 23:38:03 host Pid: 5573, comm: ss Not tainted (2.6.24 #1)
> > Jan 26 23:38:03 host EIP: 0060:[<c031a14f>] EFLAGS: 00010282 CPU: 0
> > Jan 26 23:38:03 host EIP is at inet_diag_dump+0x2a/0x88b
> > Jan 26 23:38:03 host EAX: fffffffe EBX: e7095810 ECX: 00000001 EDX:
> fffffffe
> > Jan 26 23:38:03 host ESI: ee264a00 EDI: e7035840 EBP: 000015c5 ESP:
> e70fdbd0
> > Jan 26 23:38:03 host DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
> > Jan 26 23:38:03 host Process ss (pid: 5573, ti=e70fc000 task=e70f3680
> > task.ti=e70fc000)
> > Jan 26 23:38:03 host Stack: 00000001 c040c164 e70f3680 000040d0 00000000
> > e7035840 ee264a00 c01690a7
> > Jan 26 23:38:03 host effc6009 e70fdc20 e7095810 000240d0 c040c6c0 00000010
> > c14e02c0 00000282
> > Jan 26 23:38:03 host 8cab2e5a 000040d0 00000f00 000000d0 c0426e80 c0147e38
> > ee264a00 c02c6dff
> > Jan 26 23:38:03 host Call Trace:
> > Jan 26 23:38:03 host [<c01690a7>] permission+0x51/0xe7
> > Jan 26 23:38:03 host [<c0147e38>] __get_free_pages+0x4d/0x55
> > Jan 26 23:38:03 host [<c02c6dff>] __alloc_skb+0x4b/0xfa
> > Jan 26 23:38:03 host [<c02de333>] netlink_dump+0x47/0x178
> > Jan 26 23:38:03 host [<c01426df>] file_read_actor+0xe1/0x10c
> > Jan 26 23:38:03 host [<c02e062e>] netlink_dump_start+0xb8/0x15e
> > Jan 26 23:38:03 host [<c0319bf0>] inet_diag_rcv_msg+0x5c/0x591
> > Jan 26 23:38:03 host [<c031a125>] inet_diag_dump+0x0/0x88b
> > Jan 26 23:38:03 host [<c0319b94>] inet_diag_rcv_msg+0x0/0x591
> > Jan 26 23:38:03 host [<c0319152>] inet_diag_rcv+0x0/0x24
> > Jan 26 23:38:03 host [<c02df335>] netlink_rcv_skb+0x6d/0x8e
> > Jan 26 23:38:03 host [<c031916b>] inet_diag_rcv+0x19/0x24
> > Jan 26 23:38:03 host [<c02df0e0>] netlink_unicast+0x1fa/0x224
> > Jan 26 23:38:03 host [<c02df86e>] netlink_sendmsg+0x1d0/0x2b2
> > Jan 26 23:38:03 host [<c01690a7>] permission+0x51/0xe7
> > Jan 26 23:38:03 host [<c02c1423>] sock_sendmsg+0xbb/0xdd
> > Jan 26 23:38:03 host [<c012c951>] autoremove_wake_function+0x0/0x37
> > Jan 26 23:38:03 host [<c013090c>] __atomic_notifier_call_chain+0x24/0x4a
> > Jan 26 23:38:03 host [<c0130949>] atomic_notifier_call_chain+0x17/0x1b
> > Jan 26 23:38:03 host [<c0251ad0>] notify_update+0x1f/0x23
> > Jan 26 23:38:03 host [<c0253f0f>] do_con_write+0x33d/0x1aac
> > Jan 26 23:38:03 host [<c0253f0f>] do_con_write+0x33d/0x1aac
> > Jan 26 23:38:03 host [<c02c8369>] verify_iovec+0x2a/0x91
> > Jan 26 23:38:03 host [<c02c1572>] sys_sendmsg+0x12d/0x243
> > Jan 26 23:38:03 host [<c024b40f>] n_tty_ioctl+0x0/0x1e1
> > Jan 26 23:38:03 host [<c0247475>] tty_ioctl+0x114/0xeb5
> > Jan 26 23:38:03 host [<c0142987>] find_lock_page+0x20/0xab
> > Jan 26 23:38:03 host [<c0144d19>] filemap_fault+0x1d4/0x43e
> > Jan 26 23:38:03 host [<c02c3618>] sk_prot_alloc+0x70/0x8a
> > Jan 26 23:38:03 host [<c02c4d19>] sk_alloc+0x3d/0x47
> > Jan 26 23:38:03 host [<c0172eee>] d_alloc+0x1b/0x192
> > Jan 26 23:38:03 host [<c0172eb3>] d_instantiate+0x3b/0x5b
> > Jan 26 23:38:03 host [<c02c1161>] sock_attach_fd+0x77/0xa2
> > Jan 26 23:38:03 host [<c02c27d8>] sys_socketcall+0x24f/0x271
> > Jan 26 23:38:03 host [<c0115952>] do_page_fault+0x0/0x5ce
> > Jan 26 23:38:03 host [<c0103e72>] sysenter_past_esp+0x5f/0x85
> > Jan 26 23:38:03 host [<c0350000>] __xfrm6_tunnel_spi_lookup+0x26/0x72
> > Jan 26 23:38:03 host =======================
> > Jan 26 23:38:03 host Code: ff 55 57 56 53 83 ec 74 89 44 24 18 89 54 24 14
> 8b
> > 5a 04 0f b7 43 04 e8 36 f0 ff ff 85 c0 0f 84 a4 02 00 00 83 c3 10 89 5c 24
> 28
> > <8
> > Jan 26 23:38:03 host EIP: [<c031a14f>] inet_diag_dump+0x2a/0x88b SS:ESP
> > 0068:e70fdbd0
> > Jan 26 23:38:03 host ---[ end trace 57d7a9039abd2ede ]---
> > 
> > All ss runned later sleep forewer in D state. Kill -9 don't work.
> > 
> > Steps to reproduce:
> > run /sbin/ss -d

[root@tonchinha ~]# uname -a
Linux tonchinha.ghostprotocols.net 2.6.24 #1 Sat Jan 26 20:43:20 BRST
2008 i686 athlon i386 GNU/Linux
[root@tonchinha ~]# ss -d
State       Recv-Q Send-Q Local Address:Port Peer Address:Port
[root@tonchinha ~]#
[root@tonchinha ~]# lsmod | egrep dccp\|inet
dccp_diag               1344  0
dccp                   44312  1 dccp_diag
inet_diag               8904  1 dccp_diag
[root@tonchinha ~]#
[root@tonchinha ~]# modprobe dccp_ccid2
[root@tonchinha ~]# ss -d
State       Recv-Q Send-Q Local Address:Port Peer Address:Port
[root@tonchinha ~]# modprobe dccp_ccid3
[root@tonchinha ~]# ss -d
State       Recv-Q Send-Q Local Address:Port Peer Address:Port

No problems.

Trying now with CONFIG_DEBUG_PREEMPT instead of
CONFIG_DEBUG_PREEMPT_VOLUNTARY.

- Arnaldo
Comment 3 Arnaldo Carvalho de Melo 2008-01-27 08:17:04 UTC 
just tried with CONFIG_PREEMPT (previous one was CONFIG_PREEMPT_VOLUNTARY), no problems, I even created several DCCP ipv4 dccp sockets using ttcp but I couldn't reproduce the reported problem.

[root@tonchinha ~]# ss -v
ss utility, iproute2-ss071016
[root@tonchinha ~]# rpm -q iproute
iproute-2.6.23-1.fc9

Can you provide more information?
Comment 4 Misha Labjuk 2008-01-27 10:54:37 UTC 
I rebuild kernel with enabled dccp module and error is gone!!

I don't know what is dccp, i don't need it, it is not enabled in my kernel configuration (as recommended).

Try to (re)move module dccp.ko from /lib/modules/2.6.24/..., unload it,  and run 'ss -d'.
Comment 5 Arnaldo Carvalho de Melo 2008-01-27 11:19:35 UTC 
Thanks, now I managed to reproduce, working on it.
Comment 6 Arnaldo Carvalho de Melo 2008-01-27 11:50:18 UTC 
Em Sun, Jan 27, 2008 at 10:54:38AM -0800, bugme-daemon@bugzilla.kernel.org escreveu:
> http://bugzilla.kernel.org/show_bug.cgi?id=9825
> 
> ------- Comment #4 from spike@ml.yaroslavl.ru  2008-01-27 10:54 -------
> I rebuild kernel with enabled dccp module and error is gone!!
> 
> I don't know what is dccp, i don't need it, it is not enabled in my kernel
> configuration (as recommended).
> 
> Try to (re)move module dccp.ko from /lib/modules/2.6.24/..., unload it,  and
> run 'ss -d'.

Try with the attached patch, it fixes for me and I'll soon submit it to
netdev with a proper description so that DaveM can push it to stable too.

- Arnaldo
Comment 7 Arnaldo Carvalho de Melo 2008-01-27 11:53:37 UTC 
Created attachment 14613 [details]
proper error handling for inet_diag when there is no handle for a netlink message

oh well, the bugzilla e-mail interface doesn't handle attachments, creating one...
Comment 8 Herbert Xu 2008-01-29 18:46:51 UTC 
Andrew Morton <akpm@linux-foundation.org> wrote:
>
>> Jan 26 23:38:03 host general protection fault: 0000 [#1] PREEMPT
>> Jan 26 23:38:03 host Modules linked in: iptable_mangle iptable_nat nf_nat
>> ipt_REJECT xt_tcpudp nf_conntrack_ipv4 xt_state ipt_ULOG iptable_filter
>> ip_tables x_
>> Jan 26 23:38:03 host
>> Jan 26 23:38:03 host Pid: 5573, comm: ss Not tainted (2.6.24 #1)
>> Jan 26 23:38:03 host EIP: 0060:[<c031a14f>] EFLAGS: 00010282 CPU: 0
>> Jan 26 23:38:03 host EIP is at inet_diag_dump+0x2a/0x88b

This should be fixed by

	[PATCH][INET_DIAG]: Fix inet_diag_lock_handler error path
	20080128022050.GQ27661@ghostprotocols.net

that Arnaldo posted recently.

Cheers,
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