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squid-2.7Stable8 hangup

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Hi All,

I've been using this version of squid for a few months now.

It worked great until recently, when we upgraded to kernel 2.6.34.

We're using squid on bridge scenario.

Squid simply hung up (connections with squidclient didn't work), and
the process didn't respond to kill. I had to use "kill -9".

The dmesg output was:

kernel: general protection fault: 0000 [#1] SMP
kernel: last sysfs file: /sys/devices/pci0000:00/0000:00:1f.3/i2c-0/name
kernel: CPU 1
kernel: Modules linked in:

kernel: Pid: 18351, comm: squid Not tainted 2.6.34 #1 DX58SO/
kernel: RIP: 0010:[<ffffffff81360c2a>]  [<ffffffff81360c2a>]
sock_rfree+0x26/0x37
kernel: RSP: 0018:ffff88041c28fc20  EFLAGS: 00010206
kernel: RAX: dce8dce85d415d41 RBX: ffff88038f098c00 RCX: 0000000000000720
kernel: RDX: ffff8804053b2e00 RSI: ffff88032564ee0c RDI: ffff88038f098c00
kernel: RBP: ffff8804051b2e00 R08: 0000000000000000 R09: 0000000000000000
kernel: R10: 0000000000020860 R11: ffff8804051b2e00 R12: 00000000000005a8
kernel: R13: 00000000000005a8 R14: 0000000000003d21 R15: 0000000000000000
kernel: FS:  00007f214fa8c710(0000) GS:ffff880001840000(0000)
knlGS:0000000000000000
kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kernel: CR2: 000000000b388000 CR3: 000000041c4c4000 CR4: 00000000000006e0
kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
kernel: Process squid (pid: 18351, threadinfo ffff88041c28e000, task
ffff88042e0fcec0)
kernel: Stack:
kernel: ffffffff81365dda ffff88038f098c00 ffffffff81365b8c ffff88038f098c00
kernel: <0> ffffffff813a222a 00000000000000d0 ffffffff81366af9 000000002e0fcec0
kernel: <0> ffff88042e0fcec0 ffff88042e0fcec0 ffff88042e0fcec0 0000000014d31cc0
kernel: Call Trace:
kernel: [<ffffffff81365dda>] ? skb_release_head_state+0x6d/0xb7
kernel: [<ffffffff81365b8c>] ? __kfree_skb+0x9/0x7d
kernel: [<ffffffff813a222a>] ? tcp_recvmsg+0x6a3/0x89a
kernel: [<ffffffff81366af9>] ? __alloc_skb+0x5e/0x14e
kernel: [<ffffffff81360ede>] ? sock_common_recvmsg+0x30/0x45
kernel: [<ffffffff8135ec0f>] ? sock_aio_read+0xdd/0xf1
kernel: [<ffffffff810ac500>] ? do_sync_read+0xb0/0xf2
kernel: [<ffffffff8142a25e>] ? _raw_spin_lock_bh+0x9/0x1f
kernel: [<ffffffff810acf32>] ? vfs_read+0xb9/0xff
kernel: [<ffffffff810ad034>] ? sys_read+0x45/0x6e
kernel: [<ffffffff8100292b>] ? system_call_fastpath+0x16/0x1b
kernel: Code: ff ff ff ff c3 48 8b 57 18 8b 87 d8 00 00 00 48 8d 8a ac
00 00 00 f0 29 82 ac 00 00 00 48 8b 57 18 8b 8f d8 00 00 00 48 8b 42
38 <48> 83 b8 b0 00 00 00 00 74 06 01 8a f4 00 00 00 c3 41 57 41 89
kernel: RIP  [<ffffffff81360c2a>] sock_rfree+0x26/0x37
kernel: RSP <ffff88041c28fc20>
kernel: ---[ end trace bcd320fe508cc071 ]---

Can anybody help me?

What information can I provide you to track down this issue?

My guess is the problem happened while reading on a socket.

Cheers,

Felipe Damasio



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