> > If anyone has an idea, I'm happy to try a patch. > > Can you try this one [1].
Rob, I'm still hitting it when I apply that on next-20170405. Crash below.. Any other clues? [ 229.422825] Unable to handle kernel paging request for data at address 0x00002260 [ 229.423681] Faulting instruction address: 0xc0000000006fad80 cpu 0x13: Vector: 300 (Data Access) at [c00000799411f8a0] pc: c0000000006fad80: n_tty_receive_buf_common+0xc0/0xbd0 lr: c0000000006fad5c: n_tty_receive_buf_common+0x9c/0xbd0 sp: c00000799411fb20 msr: 900000000280b033 dar: 2260 dsisr: 40000000 current = 0xc0000079665d1e00 paca = 0xc00000000fb0be00 softe: 0 irq_happened: 0x01 pid = 5, comm = kworker/u56:0 Linux version 4.11.0-rc5-next-20170405+ (mikey@bml86) (gcc version 5.4.0 20160609 (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.4) ) #4 SMP Thu Apr 6 19:13:58 CDT 2017 enter ? for help [c00000799411fbf0] c0000000006ff968 tty_ldisc_receive_buf+0x48/0xe0 [c00000799411fc20] c0000000007009fc tty_port_default_receive_buf+0x2c/0x40 [c00000799411fc40] c000000000700278 flush_to_ldisc+0x168/0x190 [c00000799411fca0] c00000000010a0fc process_one_work+0x1ec/0x580 [c00000799411fd30] c00000000010a528 worker_thread+0x98/0x5d0 [c00000799411fdc0] c00000000011343c kthread+0x16c/0x1b0 [c00000799411fe30] c00000000000b4e8 ret_from_kernel_thread+0x5c/0x74 13:mon> r R00 = c0000000006fad5c R16 = 0000000000000000 R01 = c00000799411fb20 R17 = 0000000000000000 R02 = c0000000014b9200 R18 = c000007994060ea8 R03 = 0000000000000000 R19 = c000007994060c78 R04 = c0000000021c2420 R20 = c000007994060c20 R05 = c0000000021c2520 R21 = 0000000000000000 R06 = 0000000000000100 R22 = 0000000000000000 R07 = 0000000000000001 R23 = 0000000100000000 R08 = 0000000000000000 R24 = 0000000000000000 R09 = c0000000fc459600 R25 = 0000000000000000 R10 = c0000000fc459628 R26 = c0000000021c2420 R11 = 0002010100000005 R27 = c0000000021c2520 R12 = 0000000024002828 R28 = 0000000000000100 R13 = c00000000fb0be00 R29 = c0000000fc459400 R14 = c0000000001132d8 R30 = 0000000000000001 R15 = c0000079941f0ec0 R31 = c0000000fc459400 pc = c0000000006fad80 n_tty_receive_buf_common+0xc0/0xbd0 cfar= c000000000b98e10 down_read+0x70/0x90 lr = c0000000006fad5c n_tty_receive_buf_common+0x9c/0xbd0 msr = 900000000280b033 cr = 24042828 ctr = c0000000006fb890 xer = 0000000000000000 trap = 300 dar = 0000000000002260 dsisr = 40000000
