Hi, I guess everyone is at KVM forum, but posting bug report now before it slips. With latest linus's kernel (2d65a9f48fcdf7866aab6457bc707ca233e0c791) with kvm changes for 3.18 kvm changes already merged, kvm will oops in start of qemu (using juno). >From https://validation.linaro.org/scheduler/job/182713/log_file#L_177_48 QEMU emulator version 2.1.50 (Debian 2.1.0+git1124+gb1d28ec-20linaro+trusty), Copyright (c) 2003-2008 Fabrice Bellard Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = ffffffc952d4e000 [00000000] *pgd=00000009f12f5003, *pud=00000009f12f5003, *pmd=0000000000000000 Internal error: Oops: 96000006 [#1] PREEMPT SMP Modules linked in: nbd CPU: 5 PID: 1216 Comm: qemu-system-aar Not tainted 3.17.0-linaro-juno #1 task: ffffffc074351600 ti: ffffffc955284000 task.ti: ffffffc955284000 PC is at kvm_timer_init+0x30/0x5c LR is at kvm_arch_init_vm+0x74/0x94 pc : [<ffffffc0000a4c24>] lr : [<ffffffc00009a49c>] pstate: 60000145 sp : ffffffc955287d50 x29: ffffffc955287d50 x28: ffffffc955284000 x27: ffffffc0006c8000 x26: 000000000000001d x25: 0000000000000119 x24: 0000000000000000 x23: 000000000000ae01 x22: ffffffc000715000 x21: 0000000000000000 x20: ffffffc974f2c800 x19: ffffffc974f2c800 x18: 0000007fc68d5a50 x17: 0000007fa601fc90 x16: ffffffc0001a1988 x15: 0000007fa60a45a0 x14: 3030303030303978 x13: 0000000000010000 x12: 0000000000000040 x11: 0000000000000000 x10: 0101010101010101 x9 : 0000000000000000 x8 : ffffffc952d52000 x7 : ffffffc97123b960 x6 : ffffffc00060b500 x5 : 000000000015f010 x4 : ffffffbe00000000 x3 : 0000000000000000 x2 : ffffffc0007309e0 x1 : 0000000000000000 x0 : 0000000000000000 Process qemu-system-aar (pid: 1216, stack limit = 0xffffffc955284058) Stack: (0xffffffc955287d50 to 0xffffffc955288000) 7d40: 55287d70 ffffffc9 0009a49c ffffffc0 7d60: 00000000 00000000 0000001d 00000000 55287da0 ffffffc9 00097c18 ffffffc0 7d80: 7015d100 ffffffc0 00000000 00000000 74f2c800 ffffffc9 00097cec ffffffc0 7da0: 55287e10 ffffffc9 001a1744 ffffffc0 7015d100 ffffffc0 00000000 00000000 7dc0: 77bec528 ffffffc9 00000007 00000000 0000ae01 00000000 00000000 00000000 7de0: 00000119 00000000 0000001d 00000000 006c8000 ffffffc0 00000020 00000000 7e00: 77bec528 ffffffc9 00000000 00000000 55287e90 ffffffc9 001a1a0c ffffffc0 7e20: 00000000 00000000 7015d101 ffffffc0 7015d100 ffffffc0 00000007 00000000 7e40: 55287e70 ffffffc9 001abc00 ffffffc0 00000000 00000000 0018f6b0 ffffffc0 7e60: 00000007 00000000 7015d100 ffffffc0 55287e80 ffffffc9 001abc58 ffffffc0 7e80: 55287e90 ffffffc9 001a19c8 ffffffc0 c68d5cf0 0000007f 0008429c ffffffc0 7ea0: 00000000 00000000 c68d5e80 0000007f ffffffff ffffffff a601fc9c 0000007f 7ec0: 60000000 00000000 00000015 00000000 00000007 00000000 0000ae01 00000000 7ee0: 00000000 00000000 ffffff80 00000000 c68d5df0 0000007f 00000000 00000000 7f00: 80808080 80808080 fefefeff fefefefe 0000001d 00000000 00000004 00000000 7f20: 01010101 01010101 00000000 00000000 00000040 00000000 00010000 00000000 7f40: 30303978 30303030 a60a45a0 0000007f 0089a208 00000000 a601fc90 0000007f 7f60: c68d5a50 0000007f 008fc000 00000000 c68d5e80 0000007f 00000000 00000000 7f80: 00000000 00000000 00000006 00000000 008fc000 00000000 00732000 00000000 7fa0: 00733428 00000000 008fc000 00000000 00000004 00000000 c68d5cf0 0000007f 7fc0: 0044e824 00000000 c68d5cf0 0000007f a601fc9c 0000007f 60000000 00000000 7fe0: 00000007 00000000 0000001d 00000000 00000000 00000000 00000000 00000000 Call trace: [<ffffffc0000a4c24>] kvm_timer_init+0x30/0x5c [<ffffffc00009a498>] kvm_arch_init_vm+0x70/0x94 [<ffffffc000097c14>] kvm_dev_ioctl+0xe0/0x480 [<ffffffc0001a1740>] do_vfs_ioctl+0x36c/0x5b4 [<ffffffc0001a1a08>] SyS_ioctl+0x80/0x98 Code: b4000121 f9400041 aa0003f3 aa0103e0 (f9400021) _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm