Hi, We're busy testing the suspend/resume functionality on the new OLPC XO-1.5 laptop. This uses a SD card as its primary disk, which is on a SDHCI controller on the VIA VX855 chipset. We are running Linux v2.6.31 We are occasionally encountering a crash from below mmc_rescan() during suspend: BUG: unable to handle kernel paging request at 6b6b6c57 IP: [<b066d6e2>] sdio_remove_func+0x9/0x27 Call Trace: [<b066cfb4>] ? mmc_sdio_remove+0x34/0x65 [<b066d1fc>] ? mmc_attach_sdio+0x217/0x240 [<b066a22f>] ? mmc_rescan+0x1a2/0x20f [<b042e9a0>] ? worker_thread+0x156/0x1e1 This needs at least a few hundred suspend/resume cycles before it reproduces, and often more than 2000. Here is a log of the final couple of suspend/resumes and the crash: http://dev.laptop.org/attachment/ticket/9707/p1_crash.log and some of our diagnosis/discussion so far: http://dev.laptop.org/ticket/9707 Does anyone have any theories on why this is happening? Thanks, Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
