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Date: Mon, 29 Oct 2007 14:00:01 -0400 From: Chuck Ebbert <cebbert@...hat.com> To: Netdev <netdev@...r.kernel.org> Subject: kernel panic removing devices from a teql queuing discipline https://bugzilla.redhat.com/show_bug.cgi?id=219488 Still happening in 2.6.22.9: BUG: unable to handle kernel paging request at virtual address 66696674 printing eip: d098d4de *pde = 00000000 Oops: 0000 [#1] SMP last sysfs file: /class/net/lo/ifindex Modules linked in: sch_teql netconsole autofs4 hidp rfcomm l2cap bluetooth sunrpc ipv6 dm_multipath video sbs i2c_ec button battery asus_acpi ac parport_pc lp parport floppy i2c_piix4 pcspkr i2c_core pcnet32 mii serio_raw ide_cd cdrom dm_snapshot dm_zero dm_mirror dm_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd CPU: 0 EIP: 0060:[<d098d4de>] Not tainted VLI EFLAGS: 00010202 (2.6.18-1.2849.fc6 #1) EIP is at teql_master_xmit+0xdc/0x3aa [sch_teql] eax: c06a82c0 ebx: cde25c80 ecx: 00000000 edx: c06ad680 esi: c12f8e00 edi: cfc73800 ebp: 66696670 esp: ca6c8bb8 ds: 007b es: 007b ss: 0068 Process ping (pid: 2275, ti=ca6c8000 task=cc7bd400 task.ti=ca6c8000) Stack: cde25174 00000000 000004cc ca6f0800 c12f8e00 000004cc cc7f5280 ca6f0c00 cc7f5280 cc7f5280 00000000 00000000 00000000 c06a82c0 00000000 ca6f0800 c12f8e00 c12f8e00 c0823e08 c05b9606 ca6c8c20 00000000 c12f8e00 ca6f0800 Call Trace: [<c05b9606>] dev_hard_start_xmit+0x1b9/0x218 [<c05c72e1>] __qdisc_run+0xde/0x19b [<c05baeea>] dev_queue_xmit+0x147/0x265 [<c05d8a0c>] ip_output+0x1df/0x20b [<c05d63bd>] ip_push_pending_frames+0x301/0x3c3 [<c05ef0a6>] raw_sendmsg+0x62e/0x6f0 [<c05f5913>] inet_sendmsg+0x3b/0x45 [<c05af6a6>] sock_sendmsg+0xd0/0xeb [<c05afec9>] sys_sendmsg+0x192/0x1f7 [<c05b1427>] sys_socketcall+0x240/0x261 [<c0404013>] syscall_call+0x7/0xb The panic is in __teql_resolve (which has been inlined into teql_master_xmit) in net/sched/sch_teql.c at this line: if (n && n->tbl == mn->tbl && Specifically the dereference of n->tbl is faulting as n is not valid. And the address looks like part of an ASCCI string... "figt" - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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