On Mon, 2 Mar 2020 at 00:33, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > > Linus, > > The following changes since commit a93236fcbe1d0248461b29c0f87cb0b510c94e6f: > > KVM: s390: rstify new ioctls in api.rst (2020-02-24 19:28:40 +0100) > > are available in the git repository at: > > https://git.kernel.org/pub/scm/virt/kvm/kvm.git tags/for-linus > > for you to fetch changes up to 86f7e90ce840aa1db407d3ea6e9b3a52b2ce923c: > > KVM: VMX: check descriptor table exits on instruction emulation (2020-03-01 19:26:31 +0100) > > ---------------------------------------------------------------- > More bugfixes, including a few remaining "make W=1" issues such > as too large frame sizes on some configurations. On the > ARM side, the compiler was messing up shadow stacks between > EL1 and EL2 code, which is easily fixed with __always_inline. > > ---------------------------------------------------------------- > Christian Borntraeger (1): > KVM: let declaration of kvm_get_running_vcpus match implementation > > Erwan Velu (1): > kvm: x86: Limit the number of "kvm: disabled by bios" messages > > James Morse (3): > KVM: arm64: Ask the compiler to __always_inline functions used at HYP > KVM: arm64: Define our own swab32() to avoid a uapi static inline > arm64: Ask the compiler to __always_inline functions used by KVM at HYP > > Jeremy Cline (1): > KVM: arm/arm64: Fix up includes for trace.h > > Mark Rutland (1): > kvm: arm/arm64: Fold VHE entry/exit work into kvm_vcpu_run_vhe() > > Oliver Upton (1): > KVM: VMX: check descriptor table exits on instruction emulation > > Paolo Bonzini (4): > KVM: SVM: allocate AVIC data structures based on kvm_amd module parameter > KVM: allow disabling -Werror > KVM: x86: avoid useless copy of cpufreq policy > Merge tag 'kvmarm-fixes-5.6-1' of git://git.kernel.org/.../kvmarm/kvmarm into HEAD > > Valdis Kletnieks (1): > KVM: x86: allow compiling as non-module with W=1 > > Wanpeng Li (2): > KVM: Introduce pv check helpers > KVM: Pre-allocate 1 cpumask variable per cpu for both pv tlb and pv ipis Kernel panic noticed on latest Linux mainline kernel. qemu_x86_64 boot failed due to kernel panic. Please investigate this problem. Meanwhile we will also investigate by using git bisect to identify bad patch. /usr/bin/qemu-system-x86_64 -cpu host -enable-kvm -nographic \ -net nic,model=virtio,macaddr=DE:AD:BE:EF:66:05 -net tap \ -m 1024 -monitor none -kernel bzImage--5.5+git0+98d54f81e3-r0-intel-corei7-64-20200301225337-2502.bin \ --append "root=/dev/sda rootwait console=ttyS0,115200" \ -hda rpb-console-image-lkft-intel-corei7-64-20200301225337-2502.rootfs.ext4 \ -m 4096 -smp 4 -nographic \ -drive format=qcow2,file=lava-guest.qcow2,media=disk,if=virtio,id=lavatest [ 0.000000] Linux version 5.6.0-rc4 (oe-user@oe-host) (gcc version 7.3.0 (GCC)) #1 SMP Sun Mar 1 22:59:08 UTC 2020 <trim> [ 0.762542] kvm: no hardware support [ 0.763123] BUG: kernel NULL pointer dereference, address: 000000000000028c [ 0.763425] #PF: supervisor read access in kernel mode [ 0.763425] #PF: error_code(0x0000) - not-present page [ 0.763425] PGD 0 P4D 0 [ 0.763425] Oops: 0000 [#1] SMP NOPTI [ 0.763425] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.6.0-rc4 #1 [ 0.763425] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 0.763425] RIP: 0010:kobject_put+0x12/0x1c0 [ 0.763425] Code: 4a 01 89 d0 f0 0f b1 0f 75 ef 89 d1 eb d9 66 2e 0f 1f 84 00 00 00 00 00 48 85 ff 0f 84 bd 00 00 00 55 48 89 e5 41 55 41 54 53 <f6> 47 3c 01 48 89 fb 74 22 48 8d 7b 38 b8 ff ff ff ff f0 0f c1 43 [ 0.763425] RSP: 0018:ffffbd2800013de8 EFLAGS: 00010206 [ 0.763425] RAX: 0000000000000000 RBX: ffffffff996e9660 RCX: 0000000000000000 [ 0.763425] RDX: 0000000000000046 RSI: 0000000000000006 RDI: 0000000000000250 [ 0.763425] RBP: ffffbd2800013e00 R08: 0000000000000000 R09: 0000000000000000 [ 0.763425] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 0.763425] R13: 0000000000003ad0 R14: 0000000000000000 R15: ffffffff99a896be [ 0.763425] FS: 0000000000000000(0000) GS:ffff92ec7bc00000(0000) knlGS:0000000000000000 [ 0.763425] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.763425] CR2: 000000000000028c CR3: 0000000049c10000 CR4: 00000000003406f0 [ 0.763425] Call Trace: [ 0.763425] cpufreq_cpu_put+0x15/0x20 [ 0.763425] kvm_arch_init+0x1f6/0x2b0 [ 0.763425] kvm_init+0x31/0x290 [ 0.763425] ? svm_check_processor_compat+0xd/0xd [ 0.763425] ? svm_check_processor_compat+0xd/0xd [ 0.763425] svm_init+0x21/0x23 [ 0.763425] do_one_initcall+0x61/0x2f0 [ 0.763425] ? rdinit_setup+0x30/0x30 [ 0.763425] ? rcu_read_lock_sched_held+0x4f/0x80 [ 0.763425] kernel_init_freeable+0x219/0x279 [ 0.763425] ? rest_init+0x250/0x250 [ 0.763425] kernel_init+0xe/0x110 [ 0.763425] ret_from_fork+0x27/0x50 [ 0.763425] Modules linked in: [ 0.763425] CR2: 000000000000028c [ 0.763425] ---[ end trace 239abf40c55c409b ]--- [ 0.763425] RIP: 0010:kobject_put+0x12/0x1c0 [ 0.763425] Code: 4a 01 89 d0 f0 0f b1 0f 75 ef 89 d1 eb d9 66 2e 0f 1f 84 00 00 00 00 00 48 85 ff 0f 84 bd 00 00 00 55 48 89 e5 41 55 41 54 53 <f6> 47 3c 01 48 89 fb 74 22 48 8d 7b 38 b8 ff ff ff ff f0 0f c1 43 [ 0.763425] RSP: 0018:ffffbd2800013de8 EFLAGS: 00010206 [ 0.763425] RAX: 0000000000000000 RBX: ffffffff996e9660 RCX: 0000000000000000 [ 0.763425] RDX: 0000000000000046 RSI: 0000000000000006 RDI: 0000000000000250 [ 0.763425] RBP: ffffbd2800013e00 R08: 0000000000000000 R09: 0000000000000000 [ 0.763425] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 0.763425] R13: 0000000000003ad0 R14: 0000000000000000 R15: ffffffff99a896be [ 0.763425] FS: 0000000000000000(0000) GS:ffff92ec7bc00000(0000) knlGS:0000000000000000 [ 0.763425] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.763425] CR2: 000000000000028c CR3: 0000000049c10000 CR4: 00000000003406f0 [ 0.763425] BUG: sleeping function called from invalid context at /usr/src/kernel/include/linux/percpu-rwsem.h:38 [ 0.763425] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 1, name: swapper/0 [ 0.763425] INFO: lockdep is turned off. [ 0.763425] irq event stamp: 696816 [ 0.763425] hardirqs last enabled at (696815): [<ffffffff98c929d1>] _raw_read_unlock_irqrestore+0x31/0x50 [ 0.763425] hardirqs last disabled at (696816): [<ffffffff97e01f3b>] trace_hardirqs_off_thunk+0x1a/0x1c [ 0.763425] softirqs last enabled at (696776): [<ffffffff99000338>] __do_softirq+0x338/0x43a [ 0.763425] softirqs last disabled at (696769): [<ffffffff97f045e8>] irq_exit+0xb8/0xc0 [ 0.763425] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G D 5.6.0-rc4 #1 [ 0.763425] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 0.763425] Call Trace: [ 0.763425] dump_stack+0x7a/0xa5 [ 0.763425] ___might_sleep+0x163/0x250 [ 0.763425] __might_sleep+0x4a/0x80 [ 0.763425] exit_signals+0x33/0x2d0 [ 0.763425] do_exit+0xb6/0xcf0 [ 0.763425] ? kernel_init_freeable+0x219/0x279 [ 0.763425] ? rest_init+0x250/0x250 [ 0.763425] rewind_stack_do_exit+0x17/0x20 [ 0.763425] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 metadata: git branch: master git repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git describe: v5.6-rc4 kernel-config: http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-corei7-64/lkft/linux-mainline/2502/config git log --online 98d54f81e36b (HEAD -> master, tag: v5.6-rc4, origin/master, origin/HEAD) Linux 5.6-rc4 e70869821a46 Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 f853ed90e2e4 Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm 86f7e90ce840 KVM: VMX: check descriptor table exits on instruction emulation fb279f4e2386 Merge branch 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 37b0b6b8b99c ext4: potential crash on allocation error in ext4_alloc_flex_bg_array() 38b17afb0ebb macintosh: therm_windtunnel: fix regression when instantiating devices 6c5d91124929 jbd2: fix data races at struct journal_head 7557c1b3f715 Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi ref: https://lkft.validation.linaro.org/scheduler/job/1261774#L461 https://lkft.validation.linaro.org/scheduler/job/1261816#L477 -- Linaro LKFT https://lkft.linaro.org
