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| author | Alexey Dobriyan <adobriyan@sw.ru> | 2007-11-05 21:28:13 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-11-07 04:08:53 -0800 |
| commit | 3f192b5c584b8ecddc6069717aaf36d8fa244713 (patch) | |
| tree | 1708ce413a0b958422cb73de48f84e26026d8adf /net/core | |
| parent | bf138862b162b6eaf3d7336f759f6e6485e481df (diff) | |
| download | lwn-3f192b5c584b8ecddc6069717aaf36d8fa244713.tar.gz lwn-3f192b5c584b8ecddc6069717aaf36d8fa244713.zip | |
[NET]: Remove /proc/net/stat/*_arp_cache upon module removal
neigh_table_init_no_netlink() creates them, but they aren't removed anywhere.
Steps to reproduce:
modprobe clip
rmmod clip
cat /proc/net/stat/clip_arp_cache
BUG: unable to handle kernel paging request at virtual address f89d7758
printing eip: c05a99da *pdpt = 0000000000004001 *pde = 0000000004408067 *pte = 0000000000000000
Oops: 0000 [#1] PREEMPT SMP
Modules linked in: atm af_packet ipv6 binfmt_misc sbs sbshc fan dock battery backlight ac power_supply parport loop rtc_cmos rtc_core rtc_lib serio_raw button k8temp hwmon amd_rng sr_mod cdrom shpchp pci_hotplug ehci_hcd ohci_hcd uhci_hcd usbcore
Pid: 2082, comm: cat Not tainted (2.6.24-rc1-b1d08ac064268d0ae2281e98bf5e82627e0f0c56-bloat #4)
EIP: 0060:[<c05a99da>] EFLAGS: 00210256 CPU: 0
EIP is at neigh_stat_seq_next+0x26/0x3f
EAX: 00000001 EBX: f89d7600 ECX: c587bf40 EDX: 00000000
ESI: 00000000 EDI: 00000001 EBP: 00000400 ESP: c587bf1c
DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process cat (pid: 2082, ti=c587b000 task=c5984e10 task.ti=c587b000)
Stack: c06228cc c5313790 c049e5c0 0804f000 c45a7b00 c53137b0 00000000 00000000
00000082 00000001 00000000 00000000 00000000 fffffffb c58d6780 c049e437
c45a7b00 c04b1f93 c587bfa0 00000400 0804f000 00000400 0804f000 c04b1f2f
Call Trace:
[<c049e5c0>] seq_read+0x189/0x281
[<c049e437>] seq_read+0x0/0x281
[<c04b1f93>] proc_reg_read+0x64/0x77
[<c04b1f2f>] proc_reg_read+0x0/0x77
[<c048907e>] vfs_read+0x80/0xd1
[<c0489491>] sys_read+0x41/0x67
[<c04080fa>] sysenter_past_esp+0x6b/0xc1
=======================
Code: e9 ec 8d 05 00 56 8b 11 53 8b 40 70 8b 58 3c eb 29 0f a3 15 80 91 7b c0 19 c0 85 c0 8d 42 01 74 17 89 c6 c1 fe 1f 89 01 89 71 04 <8b> 83 58 01 00 00 f7 d0 8b 04 90 eb 09 89 c2 83 fa 01 7e d2 31
EIP: [<c05a99da>] neigh_stat_seq_next+0x26/0x3f SS:ESP 0068:c587bf1c
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/neighbour.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 05979e356963..29b8ee4e35d6 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -1435,6 +1435,8 @@ int neigh_table_clear(struct neigh_table *tbl) kfree(tbl->phash_buckets); tbl->phash_buckets = NULL; + remove_proc_entry(tbl->id, init_net.proc_net_stat); + free_percpu(tbl->stats); tbl->stats = NULL; |