From: Zenghui Yu <yuzenghui@huawei.com> To: <kvm@vger.kernel.org>, <kvmarm@lists.cs.columbia.edu> Cc: <pbonzini@redhat.com>, <peterx@redhat.com>, Marc Zyngier <maz@kernel.org> Subject: BUG: using __this_cpu_read() in preemptible [00000000] code Date: Fri, 7 Feb 2020 17:00:25 +0800 [thread overview] Message-ID: <318984f6-bc36-33a3-abc6-bf2295974b06@huawei.com> (raw) Hi, Running a latest preemptible kernel and some guests on it, I got the following message, ---8<--- [ 630.031870] BUG: using __this_cpu_read() in preemptible [00000000] code: qemu-system-aar/37270 [ 630.031872] caller is kvm_get_running_vcpu+0x1c/0x38 [ 630.031874] CPU: 32 PID: 37270 Comm: qemu-system-aar Kdump: loaded Not tainted 5.5.0+ [ 630.031876] Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.58 10/29/2018 [ 630.031876] Call trace: [ 630.031878] dump_backtrace+0x0/0x200 [ 630.031880] show_stack+0x24/0x30 [ 630.031882] dump_stack+0xb0/0xf4 [ 630.031884] __this_cpu_preempt_check+0xc8/0xd0 [ 630.031886] kvm_get_running_vcpu+0x1c/0x38 [ 630.031888] vgic_mmio_change_active.isra.4+0x2c/0xe0 [ 630.031890] __vgic_mmio_write_cactive+0x80/0xc8 [ 630.031892] vgic_mmio_uaccess_write_cactive+0x3c/0x50 [ 630.031894] vgic_uaccess+0xcc/0x138 [ 630.031896] vgic_v3_redist_uaccess+0x7c/0xa8 [ 630.031898] vgic_v3_attr_regs_access+0x1a8/0x230 [ 630.031901] vgic_v3_set_attr+0x1b4/0x290 [ 630.031903] kvm_device_ioctl_attr+0xbc/0x110 [ 630.031905] kvm_device_ioctl+0xc4/0x108 [ 630.031907] ksys_ioctl+0xb4/0xd0 [ 630.031909] __arm64_sys_ioctl+0x28/0x38 [ 630.031911] el0_svc_common.constprop.1+0x7c/0x1a0 [ 630.031913] do_el0_svc+0x34/0xa0 [ 630.031915] el0_sync_handler+0x124/0x274 [ 630.031916] el0_sync+0x140/0x180 ---8<--- I'm now at commit 90568ecf561540fa330511e21fcd823b0c3829c6. And it looks like vgic_get_mmio_requester_vcpu() was broken by 7495e22bb165 ("KVM: Move running VCPU from ARM to common code"). Could anyone please have a look? Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Marc Zyngier <maz@kernel.org> Thanks, Zenghui
WARNING: multiple messages have this Message-ID (diff)
From: Zenghui Yu <yuzenghui@huawei.com> To: <kvm@vger.kernel.org>, <kvmarm@lists.cs.columbia.edu> Cc: pbonzini@redhat.com, Marc Zyngier <maz@kernel.org> Subject: BUG: using __this_cpu_read() in preemptible [00000000] code Date: Fri, 7 Feb 2020 17:00:25 +0800 [thread overview] Message-ID: <318984f6-bc36-33a3-abc6-bf2295974b06@huawei.com> (raw) Hi, Running a latest preemptible kernel and some guests on it, I got the following message, ---8<--- [ 630.031870] BUG: using __this_cpu_read() in preemptible [00000000] code: qemu-system-aar/37270 [ 630.031872] caller is kvm_get_running_vcpu+0x1c/0x38 [ 630.031874] CPU: 32 PID: 37270 Comm: qemu-system-aar Kdump: loaded Not tainted 5.5.0+ [ 630.031876] Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.58 10/29/2018 [ 630.031876] Call trace: [ 630.031878] dump_backtrace+0x0/0x200 [ 630.031880] show_stack+0x24/0x30 [ 630.031882] dump_stack+0xb0/0xf4 [ 630.031884] __this_cpu_preempt_check+0xc8/0xd0 [ 630.031886] kvm_get_running_vcpu+0x1c/0x38 [ 630.031888] vgic_mmio_change_active.isra.4+0x2c/0xe0 [ 630.031890] __vgic_mmio_write_cactive+0x80/0xc8 [ 630.031892] vgic_mmio_uaccess_write_cactive+0x3c/0x50 [ 630.031894] vgic_uaccess+0xcc/0x138 [ 630.031896] vgic_v3_redist_uaccess+0x7c/0xa8 [ 630.031898] vgic_v3_attr_regs_access+0x1a8/0x230 [ 630.031901] vgic_v3_set_attr+0x1b4/0x290 [ 630.031903] kvm_device_ioctl_attr+0xbc/0x110 [ 630.031905] kvm_device_ioctl+0xc4/0x108 [ 630.031907] ksys_ioctl+0xb4/0xd0 [ 630.031909] __arm64_sys_ioctl+0x28/0x38 [ 630.031911] el0_svc_common.constprop.1+0x7c/0x1a0 [ 630.031913] do_el0_svc+0x34/0xa0 [ 630.031915] el0_sync_handler+0x124/0x274 [ 630.031916] el0_sync+0x140/0x180 ---8<--- I'm now at commit 90568ecf561540fa330511e21fcd823b0c3829c6. And it looks like vgic_get_mmio_requester_vcpu() was broken by 7495e22bb165 ("KVM: Move running VCPU from ARM to common code"). Could anyone please have a look? Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Marc Zyngier <maz@kernel.org> Thanks, Zenghui _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
next reply other threads:[~2020-02-07 9:00 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-02-07 9:00 Zenghui Yu [this message] 2020-02-07 9:00 ` BUG: using __this_cpu_read() in preemptible [00000000] code Zenghui Yu 2020-02-07 9:19 ` Marc Zyngier 2020-02-07 9:19 ` Marc Zyngier 2020-02-07 10:19 ` Zenghui Yu 2020-02-07 10:19 ` Zenghui Yu 2020-02-07 10:25 ` Marc Zyngier 2020-02-07 10:25 ` Marc Zyngier 2020-02-07 16:18 ` Peter Xu 2020-02-07 16:18 ` Peter Xu 2020-02-07 16:25 ` Marc Zyngier 2020-02-07 16:25 ` Marc Zyngier
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=318984f6-bc36-33a3-abc6-bf2295974b06@huawei.com \ --to=yuzenghui@huawei.com \ --cc=kvm@vger.kernel.org \ --cc=kvmarm@lists.cs.columbia.edu \ --cc=maz@kernel.org \ --cc=pbonzini@redhat.com \ --cc=peterx@redhat.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.