On Mon, 2 Mar 2020 at 00:33, Paolo Bonzini pbonzini@redhat.com 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...
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