syzbot


WARNING in mmu_free_root_page

Status: upstream: reported C repro on 2024/03/29 03:55
Subsystems: kvm
[Documentation on labels]
Reported-by: syzbot+dc308fcfcd53f987de73@syzkaller.appspotmail.com
Fix commit: 1bc26cb90902 KVM: x86/mmu: Precisely invalidate MMU root_role during CPUID update
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-upstream-gce-leak ci-upstream-kasan-badwrites-root ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce-386-root ci-upstream-kmsan-gce-root ci-upstream-linux-next-kasan-gce-root ci2-upstream-fs ci2-upstream-kcsan-gce], missing on: [ci-qemu2-riscv64 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-arm64 ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-net-next-test-gce ci2-upstream-usb]
First crash: 27d, last: 13h08m
Discussions (2)
Title Replies (including bot) Last reply
[PATCH] KVM: x86/mmu: Precisely invalidate MMU root_role during CPUID update 2 (2) 2024/04/09 02:01
[syzbot] [kvm?] WARNING in mmu_free_root_page 2 (5) 2024/04/01 23:51
Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/03/31 16:51 21m phind.uet@gmail.com patch linux-next OK log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5187 at arch/x86/kvm/mmu/mmu.c:3579 mmu_free_root_page+0x36c/0x3f0 arch/x86/kvm/mmu/mmu.c:3579
Modules linked in:
CPU: 0 PID: 5187 Comm: syz-executor400 Not tainted 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:mmu_free_root_page+0x36c/0x3f0 arch/x86/kvm/mmu/mmu.c:3579
Code: 00 49 8d 7d 18 be 01 00 00 00 e8 8f 32 c0 09 31 ff 41 89 c6 89 c6 e8 13 e7 6f 00 45 85 f6 0f 85 5d fe ff ff e8 25 ec 6f 00 90 <0f> 0b 90 e9 4f fe ff ff e8 17 ec 6f 00 90 0f 0b 90 e9 79 fe ff ff
RSP: 0018:ffffc90002fb7700 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88801e0186c8 RCX: ffffffff811d855d
RDX: ffff888022f9a440 RSI: ffffffff811d856b RDI: 0000000000000005
RBP: ffff888024c50370 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff938d6090 R12: 1ffff920005f6ee1
R13: ffffc90000fae000 R14: 0000000000000000 R15: 0000000000000001
FS:  00007fe2bd3e76c0(0000) GS:ffff88806b000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ccab488ee8 CR3: 000000002d4ee000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvm_mmu_free_roots+0x621/0x710 arch/x86/kvm/mmu/mmu.c:3631
 kvm_mmu_unload+0x42/0x150 arch/x86/kvm/mmu/mmu.c:5638
 kvm_mmu_reset_context arch/x86/kvm/mmu/mmu.c:5596 [inline]
 kvm_mmu_after_set_cpuid+0x14d/0x300 arch/x86/kvm/mmu/mmu.c:5585
 kvm_vcpu_after_set_cpuid arch/x86/kvm/cpuid.c:386 [inline]
 kvm_set_cpuid+0x1ff1/0x3570 arch/x86/kvm/cpuid.c:460
 kvm_vcpu_ioctl_set_cpuid2+0xe7/0x160 arch/x86/kvm/cpuid.c:527
 kvm_arch_vcpu_ioctl+0x26b7/0x4310 arch/x86/kvm/x86.c:5946
 kvm_vcpu_ioctl+0xa2c/0x1090 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4620
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:904 [inline]
 __se_sys_ioctl fs/ioctl.c:890 [inline]
 __x64_sys_ioctl+0x193/0x220 fs/ioctl.c:890
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fe2bd42e06b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fe2bd3e5710 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe2bd3e5de0 RCX: 00007fe2bd42e06b
RDX: 00007fe2bd3e5de0 RSI: 000000004008ae90 RDI: 0000000000000006
RBP: 0000000000000000 R08: 0000000000000007 R09: 00000000000000eb
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000080
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000006
 </TASK>

Crashes (104):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/03/26 00:26 upstream 928a87efa423 bcd9b39f .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/20 18:07 upstream 13a2e429f644 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in mmu_free_root_page
2024/04/20 10:04 upstream 13a2e429f644 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in mmu_free_root_page
2024/04/20 04:14 upstream dbe0a7be2838 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in mmu_free_root_page
2024/04/20 17:04 upstream 13a2e429f644 af24b050 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/19 13:59 upstream 2668e3ae2ef3 af24b050 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/19 02:33 upstream 2668e3ae2ef3 af24b050 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/18 14:15 upstream 8cd26fd90c1a af24b050 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/18 10:29 upstream 8cd26fd90c1a af24b050 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/17 23:32 upstream 4b6b51322118 bd38b692 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/17 04:06 upstream 96fca68c4fbf 18f6e127 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/16 17:51 upstream 96fca68c4fbf 2338035c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/16 16:41 upstream 96fca68c4fbf 2338035c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/16 15:19 upstream 96fca68c4fbf 2338035c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/16 07:49 upstream 96fca68c4fbf 0d592ce4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/15 04:47 upstream 72374d71c315 c8349e48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/14 20:15 upstream 7efd0a74039f c8349e48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/14 13:04 upstream 7efd0a74039f c8349e48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/14 10:06 upstream 7efd0a74039f c8349e48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/14 05:46 upstream fa4022cb7361 c8349e48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/14 04:22 upstream fa4022cb7361 c8349e48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/13 13:02 upstream 8f2c057754b2 c8349e48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/13 06:02 upstream 8f2c057754b2 c8349e48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/13 02:15 upstream 8f2c057754b2 c8349e48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/12 09:16 upstream 00dcf5d862e8 27de0a5c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/11 15:31 upstream e8c39d0f57f3 3023abf0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/10 00:10 upstream 2c71fdf02a95 171ec371 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/09 16:57 upstream 20cb38a7af88 56086b24 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/09 05:41 upstream fec50db7033e f3234354 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/09 02:50 upstream fec50db7033e f3234354 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/08 08:39 upstream fec50db7033e ca620dd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/08 04:01 upstream 9fe30842a90b ca620dd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/07 22:40 upstream 9fe30842a90b ca620dd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/07 04:37 upstream f2f80ac80987 ca620dd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/06 19:45 upstream 6c6e47d69d82 ca620dd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/06 10:02 upstream 6c6e47d69d82 ca620dd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/05 00:36 upstream c88b9b4cde17 0ee3535e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/04 22:08 upstream c85af715cac0 0ee3535e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/04 13:58 upstream c85af715cac0 0ee3535e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/04 05:03 upstream c85af715cac0 51c4dcff .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/03 14:49 upstream 3e92c1e6cd87 9d2a90af .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in mmu_free_root_page
2024/04/20 12:50 upstream 13a2e429f644 af24b050 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in mmu_free_root_page
2024/04/14 01:02 upstream fa4022cb7361 c8349e48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in mmu_free_root_page
2024/04/09 00:30 upstream fec50db7033e f3234354 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in mmu_free_root_page
2024/04/08 16:57 linux-next 11cb68ad52ac 53df08b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in mmu_free_root_page
2024/04/07 18:56 linux-next 8568bb2ccc27 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in mmu_free_root_page
2024/04/07 14:03 linux-next 8568bb2ccc27 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in mmu_free_root_page
2024/04/07 12:56 linux-next 8568bb2ccc27 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in mmu_free_root_page
2024/04/04 03:54 linux-next 727900b675b7 51c4dcff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in mmu_free_root_page
2024/04/03 17:32 linux-next 727900b675b7 fed899ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in mmu_free_root_page
* Struck through repros no longer work on HEAD.