ibmveth: Fix rx pool deactivate oops
This fixes the following oops which can occur when trying to deallocate
receive buffer pools using sysfs with the ibmveth driver.
NIP:
d00000000024f954 LR:
d00000000024fa58 CTR:
c0000000000d7478
REGS:
c00000000ffef9f0 TRAP: 0300 Not tainted (2.6.22-ppc64)
MSR:
8000000000009032 <EE,ME,IR,DR> CR:
24242442 XER:
00000010
DAR:
00000000000007f0, DSISR:
0000000042000000
TASK =
c000000002f91360[2967] 'bash' THREAD:
c00000001398c000 CPU: 2
GPR00:
0000000000000000 c00000000ffefc70 d000000000262d30 c00000001c4087a0
GPR04:
00000003000000fe 0000000000000000 000000000000000f c000000000579d80
GPR08:
0000000000365688 c00000001c408998 00000000000007f0 0000000000000000
GPR12:
d000000000251e88 c000000000579d80 00000000200957ec 0000000000000000
GPR16:
00000000100b8808 00000000100feb30 0000000000000000 0000000010084828
GPR20:
0000000000000000 000000001014d4d0 0000000000000010 c00000000ffefeb0
GPR24:
c00000001c408000 0000000000000000 c00000001c408000 00000000ffffb054
GPR28:
00000000000000fe 0000000000000003 d000000000262700 c00000001c4087a0
NIP [
d00000000024f954] .ibmveth_remove_buffer_from_pool+0x38/0x108 [ibmveth]
LR [
d00000000024fa58] .ibmveth_rxq_harvest_buffer+0x34/0x78 [ibmveth]
Call Trace:
[
c00000000ffefc70] [
c0000000000280a8] .dma_iommu_unmap_single+0x14/0x28 (unreliable)
[
c00000000ffefd00] [
d00000000024fa58] .ibmveth_rxq_harvest_buffer+0x34/0x78 [ibmveth]
[
c00000000ffefd80] [
d000000000250e40] .ibmveth_poll+0xd8/0x434 [ibmveth]
[
c00000000ffefe40] [
c00000000032da8c] .net_rx_action+0xdc/0x248
[
c00000000ffefef0] [
c000000000068b4c] .__do_softirq+0xa8/0x164
[
c00000000ffeff90] [
c00000000002789c] .call_do_softirq+0x14/0x24
[
c00000001398f6f0] [
c00000000000c04c] .do_softirq+0x68/0xac
[
c00000001398f780] [
c000000000068ca0] .irq_exit+0x54/0x6c
[
c00000001398f800] [
c00000000000c8e4] .do_IRQ+0x170/0x1ac
[
c00000001398f890] [
c000000000004790] hardware_interrupt_entry+0x18/0x1c
Exception: 501 at .plpar_hcall_norets+0x24/0x94
LR = .veth_pool_store+0x15c/0x298 [ibmveth]
[
c00000001398fb80] [
d000000000250b2c] .veth_pool_store+0x5c/0x298 [ibmveth] (unreliable)
[
c00000001398fc30] [
c000000000145530] .sysfs_write_file+0x140/0x1d8
[
c00000001398fcf0] [
c0000000000de89c] .vfs_write+0x120/0x208
[
c00000001398fd90] [
c0000000000df2c8] .sys_write+0x4c/0x8c
[
c00000001398fe30] [
c0000000000086ac] syscall_exit+0x0/0x40
Instruction dump:
fba1ffe8 fbe1fff8 789d0022 f8010010 f821ff71 789c0020 1d3d00a8 7b8a1f24
38000000 7c7f1b78 7d291a14 e9690128 <
7c0a592a>
e8030000 e9690120 80a90100
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
projects / linux-2.6-omap-h63xx.git / commit