On Sat, 09 Dec 2017 15:48:05 +0000, Andreas Färber wrote: > > [1 <text/plain; utf-8 (8bit)>] > Hi, > > Am 06.12.2017 um 15:11 schrieb Andre Przywara: > > while trying to boot 4.15-rc1 on my Calxeda Midway I observed a crash > [snip] > > I'm seeing a possibly related crash in 4.15-rc2 on Raspberry Pi 2. > Using its 4.15-rc2 dtb I see a ton of timer interrupt errors (attached) > and then KVM runs into an error in unmap_hyp_range(): > > [ 3.974575] kvm [1]: 8-bit VMID > [ 3.977734] kvm [1]: IDMAP page: 401000 > [ 3.981632] kvm [1]: HYP VA range: c0000000:ffffffff > [ 3.987575] kvm [1]: Invalid trigger for IRQ19, assuming level low > [ 3.993864] kvm [1]: kvm_arch_timer: error setting vcpu affinity > [ 4.000174] Unable to handle kernel paging request at virtual address > ae46a000 > [ 4.007470] pgd = 6db59d0e > [ 4.010206] [ae46a000] *pgd=80000000306003, *pmd=00000000 > [ 4.015666] Internal error: Oops: 206 [#1] PREEMPT SMP ARM > [ 4.021181] Modules linked in: > [ 4.024259] CPU: 1 PID: 1 Comm: swapper/0 Not tainted > 4.15.0-rc2-2.gef715eb-lpae #1 > [ 4.031955] Hardware name: BCM2835 > [ 4.035373] task: 27c0e1b0 task.stack: 6730d7bc > [ 4.039936] PC is at unmap_hyp_range+0x130/0x414 > [ 4.044580] LR is at 0x40000000 > [...] > [ 4.273820] [<c0425b0c>] (unmap_hyp_range) from [<c0427728>] > (free_hyp_pgds+0x10c/0x18c) > [ 4.281965] [<c0427728>] (free_hyp_pgds) from [<c0423338>] > (teardown_hyp_mode+0x28/0x84) > [ 4.290109] [<c0423338>] (teardown_hyp_mode) from [<c04256b0>] > (kvm_arch_init+0x324/0x52c) > > 4.14.3 boots fine on RPi2 with the same dtb. > 4.15-rc2 boots fine on RPi3 with its latest dtb. > > I'm assuming there's two bugs here, one in the RPi2 dts for the No. Or rather, the RPi bug is to lack a GIC altogether. > arch_timer and that error triggering Andre's kvm teardown bug that > hopefully will be fixed with Marc's patch. Only you can tell. You'll probably need both of these patches: https://lists.cs.columbia.edu/pipermail/kvmarm/2017-December/028864.html https://lists.cs.columbia.edu/pipermail/kvmarm/2017-December/028865.html M. -- Jazz is not dead, it just smell funny. _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
