On Wed, Oct 08, 2014 at 11:57:14AM -0500, Felipe Balbi wrote: > Hi, > > With today's linus/master and with greg/usb-next I keep getting random > kernel oops from find_get_entry() (see below): > > [ 47.700065] Unable to handle kernel paging request at virtual address ffffffff > [ 47.707667] pgd = c0004000 > [ 47.710506] [ffffffff] *pgd=ae7f6821, *pte=00000000, *ppte=00000000 > [ 47.717135] Internal error: Oops: 17 [#1] SMP ARM > [ 47.722047] Modules linked in: g_mass_storage usb_f_mass_storage libcomposite configfs xhci_plat_hcd xhci_hcd snd_soc_davinci_mcasp snd_soc_edma snd_soc_omap snd_soc_evm snd_soc_tlv320aic3x dwc3 snd_soc_core snd_compress omapdrm snd_pcm_dmaengine snd_pcm snd_timer snd fb_sys_fops lis3lv02d_i2c panel_dpi matrix_keypad lis3lv02d dwc3_omap input_polldev soundcore > [ 47.755668] CPU: 0 PID: 1440 Comm: file-storage Not tainted 3.17.0-02899-ga7d2165 #229 > [ 47.763958] task: ed1b22c0 ti: ed20e000 task.ti: ed20e000 > [ 47.769609] PC is at find_get_entry+0x64/0x100 > [ 47.774281] LR is at 0xfffffffa What GCC version are you using? 4.8.1 and 4.8.2 are known to miscompile the ARM kernel and these find_get_entry() crashes with 0xffffffff involved smell a lot like the earlier reports from kernels build with those compilers: https://lkml.org/lkml/2014/6/25/456 https://lkml.org/lkml/2014/6/30/375 https://lkml.org/lkml/2014/6/30/660 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854 https://lkml.org/lkml/2014/5/9/330 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
