Something is really wrong here. Although I see that e1000 is in call trace I 
doubt if it is driver only issue. Please tell me more about your system. Are 
you running customized kernel? Are you using any kind of virtual environment?
Please send uname -a, lspci, dmeg output.

-Tushar



>-----Original Message-----
>From: [email protected] [mailto:[email protected]]
>Sent: Thursday, May 16, 2013 1:24 PM
>To: Dave, Tushar N
>Cc: [email protected]
>Subject: RE: [E1000-devel] IGB device support question
>
>Tushar,
>
>Yes this is system specific.  I get multiple types of panics.  I've
>attached the two most common, 90% of the time it's one of these two.  All
>I have to do to cause this to happen is "ifconfig eth0 down; ifconfig eth0
>up".  As soon as it execute the up command the kernel panics.
>
>1st panic dump:
>
># ifconfig eth0 down
># ifconfig eth0 up
># ADDRCONF(NETDEV_UP): bond0: link is not ready
>bonding: bond0 is being deleted...
>e1000: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
>ADDRCONF(NETDEV_UP): eth0: link is not ready
>ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
>ADDRCONF(NETDEV_UP): eth1: link is not ready
>ADDRCONF(NETDEV_UP): eth2: link is not ready
>eth0: no IPv6 routers present
>usb0: no IPv6 routers present
>e1000: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
>ADDRCONF(NETDEV_UP): eth0: link is not ready
>ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready Unable to handle kernel
>paging request for data at address 0x801504b0 Faulting instruction
>address: 0xc0014038
>Oops: Kernel access of bad area, sig: 11 [#1] PREEMPT SEL35xx Platform
>Modules linked in:
>NIP: c0014038 LR: c020a5a8 CTR: 0000000a
>REGS: ed395d40 TRAP: 0300   Not tainted  (3.0.36-rt58)
>MSR: 00009032 <EE,ME,IR,DR>  CR: 24048082  XER: 20000000
>DAR: 801504b0, DSISR: 20000000
>TASK = eeab5240[6322] 'irq/20-eth0' THREAD: ed394000
>GPR00: 00000000 ed395df0 eeab5240 eeb57e20 801504ac 00000052 eeb57e1c
>0000000a
>GPR08: eeab5240 eeb57e22 ee9bd160 eeb57e20 24042082 10087a48 ed395e78
>ed06f414
>GPR16: 00000000 00000000 00000001 ef04e000 ed752d00 ed06f000 00000023
>00000052
>GPR24: ed752cf0 ef081120 00000050 000000d0 f32249e0 ee6a97a0 ed06f3a0
>ee9bd160
>NIP [c0014038] memcpy+0x1c/0x9c
>LR [c020a5a8] e1000_clean_rx_irq+0x27c/0x3ac Call Trace:
>[ed395df0] [c020a578] e1000_clean_rx_irq+0x24c/0x3ac (unreliable)
>[ed395e60] [c020b240] e1000_clean+0x340/0x4ec [ed395ec0] [c02866ec]
>net_rx_action+0xc4/0x208 [ed395ef0] [c00251c0]
>__do_softirq_common+0xb0/0x148 [ed395f30] [c0025884]
>local_bh_enable+0x88/0xe8 [ed395f50] [c005b4e0]
>irq_forced_thread_fn+0x5c/0x74 [ed395f70] [c005c34c] irq_thread+0xdc/0x1e0
>[ed395fa0] [c003aa6c] kthread+0x78/0x7c [ed395ff0] [c000d618]
>kernel_thread+0x4c/0x68 Instruction dump:
>38c60001 4200fff0 4e800020 7c032040 418100a0 54a7e8ff 38c3fffc 3884fffc
>41820028 70c00003 7ce903a6 40820054 <80e40004> 85040008 90e60004 95060008
>
>
>2nd panic dump:
>
># ifconfig eth0 down
># ifconfig eth0 up
># mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a348]
>unmap_vmas+0x388/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:ffffffff pmd:2ea24000
>addr:48410000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:3df
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c30] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c70]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755ca0] [c0077bc8]
>vm_normal_page+0x58/0x84 [ed755cb0] [c007a16c] unmap_vmas+0x1ac/0x490
>[ed755d20] [c007c690] exit_mmap+0x98/0x148 [ed755d80] [c001d490]
>mmput+0x3c/0xf8 [ed755da0] [c0021a38] exit_mm+0x128/0x13c [ed755dd0]
>[c0023224] do_exit+0x19c/0x5d8 [ed755e10] [c00236e0]
>do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:801504b2 pmd:2ea24000
>addr:48411000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:3e0
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a348]
>unmap_vmas+0x388/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:002ea839 pmd:2ea24000
>addr:48412000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:3e1
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c30] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c70]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755ca0] [c0077bc8]
>vm_normal_page+0x58/0x84 [ed755cb0] [c007a16c] unmap_vmas+0x1ac/0x490
>[ed755d20] [c007c690] exit_mmap+0x98/0x148 [ed755d80] [c001d490]
>mmput+0x3c/0xf8 [ed755da0] [c0021a38] exit_mm+0x128/0x13c [ed755dd0]
>[c0023224] do_exit+0x19c/0x5d8 [ed755e10] [c00236e0]
>do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:002d5333 pmd:2ea24000
>page:c0802aa0 count:-1 mapcount:-2 mapping:  (null) index:0x0 page flags:
>0x404(referenced|reserved)
>addr:48413000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:3e2
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a2d0]
>unmap_vmas+0x310/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:01000000 pmd:2ea24000
>addr:48415000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:3e4
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a348]
>unmap_vmas+0x388/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:07002600 pmd:2ea24000
>addr:48416000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:3e5
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a348]
>unmap_vmas+0x388/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:2d970000 pmd:2ea24000
>addr:48417000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:3e6
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a348]
>unmap_vmas+0x388/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:c4fa9351 pmd:2ea24000
>addr:48418000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:3e7
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c30] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c70]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755ca0] [c0077bc8]
>vm_normal_page+0x58/0x84 [ed755cb0] [c007a16c] unmap_vmas+0x1ac/0x490
>[ed755d20] [c007c690] exit_mmap+0x98/0x148 [ed755d80] [c001d490]
>mmput+0x3c/0xf8 [ed755da0] [c0021a38] exit_mm+0x128/0x13c [ed755dd0]
>[c0023224] do_exit+0x19c/0x5d8 [ed755e10] [c00236e0]
>do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:95300b00 pmd:2ea24000
>addr:48419000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:3e8
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a348]
>unmap_vmas+0x388/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:00002d72 pmd:2ea24000
>addr:4841c000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:3eb
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a348]
>unmap_vmas+0x388/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:974e0000 pmd:2ea24000
>addr:4841d000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:3ec
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a348]
>unmap_vmas+0x388/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:0000ffff pmd:2ea24000
>addr:48608000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:5d7
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c30] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c70]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755ca0] [c0077bc8]
>vm_normal_page+0x58/0x84 [ed755cb0] [c007a16c] unmap_vmas+0x1ac/0x490
>[ed755d20] [c007c690] exit_mmap+0x98/0x148 [ed755d80] [c001d490]
>mmput+0x3c/0xf8 [ed755da0] [c0021a38] exit_mm+0x128/0x13c [ed755dd0]
>[c0023224] do_exit+0x19c/0x5d8 [ed755e10] [c00236e0]
>do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:ffffffff pmd:2ea24000
>addr:48609000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:5d8
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c30] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c70]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755ca0] [c0077bc8]
>vm_normal_page+0x58/0x84 [ed755cb0] [c007a16c] unmap_vmas+0x1ac/0x490
>[ed755d20] [c007c690] exit_mmap+0x98/0x148 [ed755d80] [c001d490]
>mmput+0x3c/0xf8 [ed755da0] [c0021a38] exit_mm+0x128/0x13c [ed755dd0]
>[c0023224] do_exit+0x19c/0x5d8 [ed755e10] [c00236e0]
>do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:0030a700 pmd:2ea24000
>addr:4860a000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:5d9
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a348]
>unmap_vmas+0x388/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:43b20800 pmd:2ea24000
>addr:4860b000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:5da
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a348]
>unmap_vmas+0x388/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>BUG: Bad page map in process postgres  pte:45000042 pmd:2ea24000
>addr:4860c000 vm_flags:080000fb anon_vma:  (null) mapping:edb4f984
>index:5db
>vma->vm_ops->fault: shm_fault+0x0/0x34
>vma->vm_file->f_op->mmap: shm_mmap+0x0/0x7c
>Call Trace:
>[ed755c40] [c0007ca0] show_stack+0x58/0x154 (unreliable) [ed755c80]
>[c0077b54] print_bad_pte+0x178/0x194 [ed755cb0] [c007a348]
>unmap_vmas+0x388/0x490 [ed755d20] [c007c690] exit_mmap+0x98/0x148
>[ed755d80] [c001d490] mmput+0x3c/0xf8 [ed755da0] [c0021a38]
>exit_mm+0x128/0x13c [ed755dd0] [c0023224] do_exit+0x19c/0x5d8 [ed755e10]
>[c00236e0] do_group_exit+0x80/0xac [ed755e30] [c002fbb0]
>get_signal_to_deliver+0x354/0x378 [ed755e80] [c0008f5c]
>do_signal+0x4c/0x278 [ed755f40] [c000f154] do_user_signal+0x74/0xc4
>--- Exception: 400 at 0xfa1c920
>    LR = 0xfa1e8e4
>------------[ cut here ]------------
>kernel BUG at mm/filemap.c:138!
>Oops: Exception in kernel mode, sig: 5 [#1] PREEMPT SEL35xx Platform
>Modules linked in:
>NIP: c0062c9c LR: c0062bf4 CTR: 00000000
>REGS: edb2bb50 TRAP: 0700   Tainted: G    B        (3.0.36-rt58)
>MSR: 00029032 <EE,ME,CE,IR,DR>  CR: 20004424  XER: 20000000 TASK =
>ed1a7240[457] 'postgres' THREAD: edb2a000
>GPR00: 00000001 edb2bc00 ed1a7240 c0d93260 c018e704 00000000 003d7000
>00000000
>GPR08: 00000017 00000978 00000978 c0572090 000003d7 10420ec0 103c1288
>103c1724
>GPR16: 103c2430 103c2450 edb4f8b4 103c2400 10419034 103c2468 ffffffff
>00000000
>GPR24: edb2bc58 edb4f984 00000000 00000000 000003d7 c0d93260 00000000
>edb4f984
>NIP [c0062c9c] __delete_from_page_cache+0xdc/0x1a4
>LR [c0062bf4] __delete_from_page_cache+0x34/0x1a4
>Call Trace:
>[edb2bc00] [c0062bf4] __delete_from_page_cache+0x34/0x1a4 (unreliable)
>[edb2bc20] [c0062da8] delete_from_page_cache+0x44/0x7c [edb2bc40]
>[c006c690] truncate_inode_page+0xbc/0xd4 [edb2bc50] [c006c780]
>truncate_inode_pages_range+0xd8/0x2fc
>[edb2bcc0] [c0071dcc] shmem_truncate_range+0x44/0x6cc [edb2bd60]
>[c0072868] shmem_evict_inode+0xdc/0x174 [edb2bd80] [c00a315c]
>evict+0x9c/0x160 [edb2bda0] [c009ed54] d_kill+0xfc/0x124 [edb2bdc0]
>[c009ef18] dput+0x19c/0x1bc [edb2bde0] [c008d3bc] fput+0x1f4/0x210
>[edb2be00] [c016da6c] shm_destroy+0x58/0x7c [edb2be20] [c016ebec]
>sys_shmctl+0x718/0x824 [edb2bf10] [c016f07c] sys_ipc+0x218/0x254
>[edb2bf40] [c000e934] ret_from_syscall+0x0/0x38
>--- Exception: c01 at 0xfa82720
>    LR = 0x101c6868
>Instruction dump:
>7d400028 314affff 7d40012d 40a2fff4 380b0034 7d200028 3129ffff 7d20012d
>40a2fff4 801d0008 7c0000f8 54000ffe <0f000000> 801d0000 700a0010 418200a8
>
>
>This seems to be identical to a problem discussed in this thread from 2007
>
>http://marc.info/?l=e1000-devel&m=118310336228016 but there was no
>solution offered.
>
>Any insight you can offer would be greatly appreciated because we're
>stumped.
>
>Thanks.
>
>Bruce
>
>
>"Dave, Tushar N" <[email protected]> wrote on 05/15/2013 06:15:30
>PM:
>
>> From: "Dave, Tushar N" <[email protected]>
>> To: "[email protected]" <[email protected]>, "e1000-
>> [email protected]" <[email protected]>
>> Date: 05/15/2013 06:16 PM
>> Subject: RE: [E1000-devel] IGB device support question
>>
>> >-----Original Message-----
>> >From: [email protected] [mailto:[email protected]]
>> >Sent: Wednesday, May 15, 2013 3:30 PM
>> >To: [email protected]
>> >Subject: [E1000-devel] IGB device support question
>> >
>> >Hi,
>> >
>> >I'm currently running the 3.0.36 kernel on custom HW using an MPC8347
>PPC
>> >SOC with an Intel RC82540EP gigabit ethernet controller that we're
>talking
>> >to with the e1000 driver.  We're seeing a lot of problems with memory
>(bad
>> >page table entries, out-of-memory panics, etc.) when we take the
>interface
>> >down and back up with ifconfig.
>> >
>> >I'm suspicious that our problem is due to using an old driver that
>> >has memory issues.  We're not in a position to move forward on kernel
>versions
>> >right now, so I have a couple of questions I hope you can answer.
>> >
>> >1) Does the IGB driver support the RC82540EP?  I'm not finding any
>obvious
>> >references to the part in .../drivers/net/ethernet/intel/igb in the
>> >3.9 tree.
>> No 82540 is supported by e1000 driver.
>> >2) If it does, how bad would it be to try and backport to the 3.0.36
>> >kernel?
>> There isn't much development into e1000 driver (only few bug fixes)
>> between 3.0.36 and current stable kernel release. So I am not sure if
>> backporting is going to solve the issues. 82540 is old part and in
>> recent years I haven't seen anything like you describing i.e. bad page
>> table entries, out-of-memory panics, etc.
>> Please send the panic message and I will look into it. I am guessing
>> this is system/board specific, right? Or you have similar issues on
>> more than one type of system(s)?
>>
>> -Tushar
>>


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