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    SubjectRe: Squid hang up on 2.6.34
    From
    Hi again,

    Just FYI: After squid hung up, I started it again.

    A few minutes later, the machine frooze...after a reboot, syslog
    didn't show any messages.

    So the message below is the only tip of what happened.

    Cheers,

    Felipe Damasio

    2010/7/8 Felipe W Damasio <felipewd@gmail.com>
    >
    > Hi All,
    >
    > I've been using 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 with TProxy.
    >
    > 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?
    >
    > Cheers,
    >
    > Felipe Damasio
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