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I have succesfully remedied by SD Write lockup issue by not writing to the SD card at all and now my 7800 boxes running Kernel 2.6.21-ts with EABI root filesystem are stable. However I am getting occasional read lockups on some of my devices. Unlike the write lockups that produce no useful error messags, I get the following in dmesg before the SD card completely stops being able to be read from: Anyone have any insight into this issue? Unable to handle kernel NULL pointer dereference at virtual address 00000014 pgd = c0004000 [00000014] *pgd=00000000 Internal error: Oops: 17 [#1] Modules linked in: ehci_hcd tssdcard usbcore CPU: 0 PC is at as_move_to_dispatch+0x10/0x184 LR is at as_dispatch_request+0x3b0/0x3e4 pc : [<c015b340>] lr : [<c015b8cc>] Not tainted sp : c14f5eb0 ip : c14f5ee0 fp : c14f5edc r10: 00371028 r9 : c6a22000 r8 : 00000000 r7 : 00000001 r6 : 00000000 r5 : 00000000 r4 : c7cf2160 r3 : 00000000 r2 : 00000019 r1 : 00000000 r0 : c7cf2160 Flags: nZCv IRQs on FIQs on Mode SVC_32 Segment kernel Control: B005317F Table: 07C58000 DAC: 00000017 Process tssdcardb (pid: 230, stack limit = 0xc14f4258) Stack: (0xc14f5eb0 to 0xc14f6000) 5ea0: c0154a8c c007c748 c0073e28 c7cf2160 5ec0: 00000000 00000000 00000001 00000000 c14f5f0c c14f5ee0 c015b8cc c015b340 5ee0: c122ee40 00000400 c14f5f14 00000001 c122ee40 00000008 00371028 00000000 5f00: c14f5f34 c14f5f10 c01521d8 c015b52c c0156d58 c0155970 00000001 c7c22d48 5f20: 00000008 00371028 c14f5fbc c14f5f38 bf023704 c0152194 c14f5f64 c14f5f48 5f40: 00371027 00000008 00000001 c145edfc c135c3e8 00000015 c14f5f7c c14f5f68 5f60: 00000000 c1367d00 c0060904 c14f5f84 c14f5f84 c14f5f80 00000000 c1367d00 5f80: c0060904 c14f5f84 c14f5f84 00000000 c14f5fbc c7c22d48 c14f4000 c15cf9f0 5fa0: bf0230a8 00000001 00000000 fffffffc c14f5ff4 c14f5fc0 c006035c bf0230b8 5fc0: 00000000 00000001 ffffffff ffffffff 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 c14f5ff8 c004c658 c006027c 00000000 00000000 Backtrace: [<c015b330>] (as_move_to_dispatch+0x0/0x184) from [<c015b8cc>] (as_dispatch_request+0x3b0/0x3e4) r8 = 00000000 r7 = 00000001 r6 = 00000000 r5 = 00000000 r4 = C7CF2160 [<c015b51c>] (as_dispatch_request+0x0/0x3e4) from [<c01521d8>] (elv_next_request+0x54/0x188) r8 = 00000000 r7 = 00371028 r6 = 00000008 r5 = C122EE40 r4 = 00000001 [<c0152184>] (elv_next_request+0x0/0x188) from [<bf023704>] (tssdcard_thread+0x65c/0x888 [tssdcard]) r7 = 00371028 r6 = 00000008 r5 = C7C22D48 r4 = 00000001 [<bf0230a8>] (tssdcard_thread+0x0/0x888 [tssdcard]) from [<c006035c>] (kthread+0xf0/0x124) [<c006026c>] (kthread+0x0/0x124) from [<c004c658>] (do_exit+0x0/0x8c8) Code: e1a0c00d e92dd9f0 e24cb004 e24dd00c (e5913014) __._,_.___
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