Hi all, While using the wilc1000 driver with latest 4.8-rc7, I have difficulties to open the device and actually use it as I have this kernel Oops right after the loading of the firmware (wilc1003_firmware.bin). If I revert back the driver to its b9811891a9f60ca9c314dcab3244c65930c4cf37 state, it works okay. I did this because I tend to think that it might be related to the latest move on this driver to "completion" or "work queues". It seems to be a regression from 4.7. It's on my ARM platform sama5d2 Xplained. Here is the log: --------------------------------------------------------------------------- root@sama5d2-xplained:~# ifup wlan0 Successfully initialized wpa_supplicant wilc1000_sdio mmc1:0001:1: chipid (001003a0) wilc1000_sdio mmc1:0001:1: has_thrpt_enh3 = 1... wilc1000_sdio mmc1:0001:1 wlan0: loading firmware atmel/wilc1003_firmware.bin Unable to handle kernel NULL pointer dereference at virtual address 00000010 pgd = d4608000 [00000010] *pgd=34671831, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] ARM Modules linked in: wilc1000_sdio(C) wilc1000(C) CPU: 0 PID: 365 Comm: wpa_supplicant Tainted: G C 4.8.0-rc7 #231 Hardware name: Atmel SAMA5 task: d463dbc0 task.stack: d462e000 PC is at __queue_work+0x98/0x29c LR is at __queue_work+0x60/0x29c pc : [<c0127060>] lr : [<c0127028>] psr: 60000093 sp : d462fc68 ip : a0000093 fp : 00000014 r10: 00000000 r9 : 00000001 r8 : c0a0812c r7 : c0a2f098 r6 : d444a900 r5 : d4663374 r4 : 00000000 r3 : 0006000a r2 : d4663374 r1 : 07ffffff r0 : 00000000 Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none Control: 10c53c7d Table: 34608059 DAC: 00000051 Process wpa_supplicant (pid: 365, stack limit = 0xd462e208) Stack: (0xd462fc68 to 0xd4630000) fc60: c0a0bbc0 ffffc985 a0000013 ffffffe1 00000000 d461a460 fc80: 00000000 d444a500 00008914 c0127298 d4663200 d461a460 00000001 bf0076b4 fca0: fffffe7c bf0082b4 ffffffff 00000018 00000001 00000000 00000000 00000000 fcc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fce0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fd00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fd20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fd40: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fd60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fd80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fda0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fdc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fde0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fe00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 d461a460 fe20: 00000000 00000000 00000000 00000000 d461a000 d461a800 00000000 bf00509c fe40: 00000001 00000000 d461a000 bf00dde0 00000001 00001002 00000000 c04fde98 fe60: d461a000 d461a000 00000001 d461a000 00001003 c04fe128 d461a000 00000148 fe80: 00001002 00000001 00000000 c04fe204 00000000 d444a50c 00000000 00000001 fea0: 00000000 c0557d5c 00000020 00000000 bebd28f0 bebd28f0 d444a50c d461a000 fec0: 6e616c77 00000030 00000000 00000000 00001003 00000000 00000000 00000000 fee0: 00001002 00008914 bebd28f0 d0164000 bebd28f0 d43ceb40 d462e000 bebd28f0 ff00: d0164020 c04e40a0 00000005 d43ceb40 00008914 c01b16e0 d43ce008 00000020 ff20: 00000001 00000001 00000000 00000000 d4418d80 d43ce000 00000008 d4028ba8 ff40: d43ce000 00000008 bebd2950 d462ff80 00000008 c01a1a1c 00000000 00000000 ff60: d43ce000 00000000 00000000 d43ceb40 d43ceb40 00008914 bebd28f0 00000005 ff80: d462e000 00000000 000f0c70 c01b1ef0 00000000 00000005 00000001 00000036 ffa0: c01076e4 c0107520 00000000 00000005 00000005 00008914 bebd28f0 00001003 ffc0: 00000000 00000005 00000001 00000036 0011959d 001195b9 00000005 000f0c70 ffe0: 001019bc bebd28e4 000b4660 b6c761fc 600c0010 00000005 00000000 00000000 [<c0127060>] (__queue_work) from [<c0127298>] (queue_work_on+0x34/0x40) [<c0127298>] (queue_work_on) from [<bf0076b4>] (wilc_enqueue_cmd+0x54/0x64 [wilc1000]) [<bf0076b4>] (wilc_enqueue_cmd [wilc1000]) from [<bf0082b4>] (wilc_set_wfi_drv_handler+0x48/0x70 [wilc1000]) [<bf0082b4>] (wilc_set_wfi_drv_handler [wilc1000]) from [<bf00509c>] (wilc_mac_open+0x214/0x250 [wilc1000]) [<bf00509c>] (wilc_mac_open [wilc1000]) from [<c04fde98>] (__dev_open+0xb8/0x11c) [<c04fde98>] (__dev_open) from [<c04fe128>] (__dev_change_flags+0x94/0x158) [<c04fe128>] (__dev_change_flags) from [<c04fe204>] (dev_change_flags+0x18/0x48) [<c04fe204>] (dev_change_flags) from [<c0557d5c>] (devinet_ioctl+0x6b4/0x788) [<c0557d5c>] (devinet_ioctl) from [<c04e40a0>] (sock_ioctl+0x154/0x2cc) [<c04e40a0>] (sock_ioctl) from [<c01b16e0>] (do_vfs_ioctl+0x9c/0x878) [<c01b16e0>] (do_vfs_ioctl) from [<c01b1ef0>] (SyS_ioctl+0x34/0x5c) [<c01b1ef0>] (SyS_ioctl) from [<c0107520>] (ret_fast_syscall+0x0/0x3c) Code: e5932004 e1520006 01a04003 0affffff (e5943010) ---[ end trace b612328adaa6bf20 ]--- /etc/network/if-pre-up.d/wpa-supplicant: line 83: 365 Segmentation fault start-stop-daemon --start --quiet --name $WPA_SUP_PNAME --startas $WPA_SUP_BIN --pidfile $WPA_SUP_PIDFILE -- $WPA_SUP_OPTIONS $WPA_SUP_CONF -D $IF_WPA_DRIVER --------------------------------------------------------------------------- Best regards, -- Nicolas Ferre
