Hello, Since 4.14-rc1 I am seeing frequent oopses during module loading (e.g., MMC, USB) from initrd on aarch64. Symptoms are similar to this in -rc3: [ OK ] Started udev Coldplug all Devices. [ 10.117775] usbcore: registered new interface driver usbfs [ 10.118235] Unable to handle kernel paging request at virtual address ffff000008e5abc0 [ 10.118238] Mem abort info: [ 10.118245] Exception class = DABT (current EL), IL = 32 bits [ 10.118249] SET = 0, FnV = 0 [ 10.118253] EA = 0, S1PTW = 0 [ 10.118256] Data abort info: [ 10.118261] ISV = 0, ISS = 0x00000006 [ 10.118264] CM = 0, WnR = 0 [ 10.118274] swapper pgtable: 4k pages, 48-bit VAs, pgd = ffff0000094a5000 [ 10.118279] [ffff000008e5abc0] *pgd=00000000bfffe003, *pud=00000000bfffd003, *pmd=0000000000000000 [ 10.118299] Internal error: Oops: 96000006 [#1] SMP [ 10.118305] Modules linked in: fixed usbcore(+) sunxi_mmc mmc_core phy_sun4i_usb sg [ 10.118341] CPU: 3 PID: 49 Comm: kworker/3:1 Not tainted 4.14.0-rc3-2.gf27997b-default #1 [ 10.118345] Hardware name: sunxi sunxi/sunxi, BIOS 2017.05-rc1 04/13/2017 [ 10.118369] Workqueue: events deferred_probe_work_func [ 10.118378] task: ffff80007c8f4000 task.stack: ffff0000099d8000 [ 10.118394] PC is at __of_match_node.part.1+0x48/0x88 [ 10.118403] LR is at of_match_node+0x40/0x70 [ 10.118411] pc : [<ffff00000879aed0>] lr : [<ffff00000879af50>] pstate: a00001c5 [ 10.118414] sp : ffff0000099dbbc0 [ 10.118419] x29: ffff0000099dbbc0 x28: 0000000000000000 [ 10.118429] x27: 0000000000000000 x26: ffff000008bb9620 [ 10.118440] x25: 00000000fffffef7 x24: ffff000009328000 [ 10.118450] x23: ffff0000093840e8 x22: ffff80007ffde170 [ 10.118461] x21: 0000000000000000 x20: 0000000000000000 [ 10.118471] x19: ffff000008e5abc0 x18: ffffffffffffffff [ 10.118481] x17: 0000ffff99368ee0 x16: ffff0000081700b0 [ 10.118491] x15: ffff000009219c08 x14: ffff80007a6ae91c [ 10.118501] x13: 0000000000000040 x12: 0000000000000020 [ 10.118511] x11: 0000000000000001 x10: 0101010101010101 [ 10.118521] x9 : 06fefeff01fefeff x8 : 7f7f7f7f7f7f7f7f [ 10.118532] x7 : 2d2f2f2f652f6230 x6 : 4306574b54455d43 [ 10.118542] x5 : 435d45544b570643 x4 : 0000000000000000 [ 10.118551] x3 : 0000000000000000 x2 : 0000000000000000 [ 10.118561] x1 : ffff80007ffde170 x0 : ffff00000879af50 [ 10.118574] Process kworker/3:1 (pid: 49, stack limit = 0xffff0000099d8000) [ 10.118578] Call trace: [ 10.118587] Exception stack(0xffff0000099dba80 to 0xffff0000099dbbc0) [ 10.118599] ba80: ffff00000879af50 ffff80007ffde170 0000000000000000 0000000000000000 [ 10.118609] baa0: 0000000000000000 435d45544b570643 4306574b54455d43 2d2f2f2f652f6230 [ 10.118620] bac0: 7f7f7f7f7f7f7f7f 06fefeff01fefeff 0101010101010101 0000000000000001 [ 10.118631] bae0: 0000000000000020 0000000000000040 ffff80007a6ae91c ffff000009219c08 [ 10.118641] bb00: ffff0000081700b0 0000ffff99368ee0 ffffffffffffffff ffff000008e5abc0 [ 10.118652] bb20: 0000000000000000 0000000000000000 ffff80007ffde170 ffff0000093840e8 [ 10.118662] bb40: ffff000009328000 00000000fffffef7 ffff000008bb9620 0000000000000000 [ 10.118673] bb60: 0000000000000000 ffff0000099dbbc0 ffff00000879af50 ffff0000099dbbc0 [ 10.118683] bb80: ffff00000879aed0 00000000a00001c5 0000000000000000 ffff80007ffde170 [ 10.118694] bba0: ffffffffffffffff ffff000009328000 ffff0000099dbbc0 ffff00000879aed0 [ 10.118707] [<ffff00000879aed0>] __of_match_node.part.1+0x48/0x88 [ 10.118718] [<ffff00000879af50>] of_match_node+0x40/0x70 [ 10.118730] [<ffff00000879d0f8>] of_match_device+0x30/0x50 [ 10.118742] [<ffff00000869208c>] platform_match+0x4c/0xe8 [ 10.118756] [<ffff00000868f2a4>] __device_attach_driver+0x44/0x150 [ 10.118768] [<ffff00000868ca54>] bus_for_each_drv+0x5c/0xa8 [ 10.118780] [<ffff00000868ead0>] __device_attach+0xc8/0x160 [ 10.118793] [<ffff00000868f42c>] device_initial_probe+0x24/0x30 [ 10.118805] [<ffff00000868dc98>] bus_probe_device+0xa0/0xa8 [ 10.118817] [<ffff00000868e300>] deferred_probe_work_func+0x60/0x180 [ 10.118832] [<ffff0000080ea284>] process_one_work+0x1e4/0x448 [ 10.118844] [<ffff0000080ea538>] worker_thread+0x50/0x498 [ 10.118855] [<ffff0000080f15e8>] kthread+0x138/0x140 [ 10.118869] [<ffff000008084e74>] ret_from_fork+0x10/0x1c [ 10.118884] Code: 1a80d281 9a93d2b5 2a0103f4 91032273 (39400264) [ 10.118893] ---[ end trace 4d55fd47910d1a86 ]--- This has been observed on Pine64 (>60%; also by Stefan) and Odroid-C2; my other arm64 boards such as Raspberry Pi 3 have not run into this so far. No such problems on 32-bit boards. This is using the openSUSE config: https://kernel.opensuse.org/cgit/kernel-source/plain/config/arm64/default Regards, Andreas -- SUSE Linux GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
