./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3435054658 <...> Warning: Permanently added '10.128.1.126' (ECDSA) to the list of known hosts. execve("./syz-executor3435054658", ["./syz-executor3435054658"], 0x7fff970f0280 /* 10 vars */) = 0 brk(NULL) = 0x555556297000 brk(0x555556297c40) = 0x555556297c40 arch_prctl(ARCH_SET_FS, 0x555556297300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3435054658", 4096) = 28 brk(0x5555562b8c40) = 0x5555562b8c40 brk(0x5555562b9000) = 0x5555562b9000 mprotect(0x7fd65dcf1000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/dev/kvm", O_RDONLY) = 3 ioctl(3, KVM_CREATE_VM, 0) = 4 syzkaller login: [ 48.252174][ T3606] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. [ 48.277381][ T3606] BUG: unable to handle page fault for address: ffffffffffffffea [ 48.285152][ T3606] #PF: supervisor write access in kernel mode [ 48.291292][ T3606] #PF: error_code(0x0002) - not-present page [ 48.297340][ T3606] PGD bc8f067 P4D bc8f067 PUD bc91067 PMD 0 [ 48.303324][ T3606] Oops: 0002 [#1] PREEMPT SMP KASAN [ 48.308527][ T3606] CPU: 0 PID: 3606 Comm: syz-executor343 Not tainted 6.0.0-rc6-syzkaller #0 [ 48.317187][ T3606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 48.327237][ T3606] RIP: 0010:eventfd_ctx_put+0x1e/0x110 [ 48.332757][ T3606] Code: ff ff e8 65 7e dc ff e9 b5 fb ff ff 41 54 55 48 89 fd 53 bb ff ff ff ff e8 ef 1d 90 ff be 04 00 00 00 48 89 ef e8 72 80 dc ff 0f c1 5d 00 bf 01 00 00 00 89 de e8 91 1a 90 ff 83 fb 01 74 35 [ 48.353866][ T3606] RSP: 0018:ffffc9000365f748 EFLAGS: 00010246 [ 48.360019][ T3606] RAX: 0000000000000001 RBX: 00000000ffffffff RCX: ffffffff81ebeb3e [ 48.367979][ T3606] RDX: fffffbfffffffffe RSI: 0000000000000004 RDI: ffffffffffffffea [ 48.375950][ T3606] RBP: ffffffffffffffea R08: 0000000000000001 R09: ffffffffffffffed [ 48.383909][ T3606] R10: fffffbfffffffffd R11: 0000000000000000 R12: 0000000000000003 [ 48.391870][ T3606] R13: ffffffffffffffea R14: ffffc900037b1000 R15: 00000000ffffffea [ 48.399826][ T3606] FS: 0000555556297300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 48.408740][ T3606] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.415311][ T3606] CR2: ffffffffffffffea CR3: 0000000072461000 CR4: 00000000003526f0 [ 48.423272][ T3606] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.431251][ T3606] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.439213][ T3606] Call Trace: [ 48.442479][ T3606] [ 48.445401][ T3606] kvm_xen_hvm_set_attr+0x563/0x1610 [ 48.450681][ T3606] ? __kvm_xen_has_interrupt+0x280/0x280 [ 48.456300][ T3606] kvm_arch_vm_ioctl+0xe39/0x18b0 [ 48.461329][ T3606] ? __kvm_set_or_clear_apicv_inhibit+0x2a0/0x2a0 [ 48.467729][ T3606] ? kfree+0xe2/0x580 [ 48.471699][ T3606] ? stack_trace_save+0x8c/0xc0 [ 48.476539][ T3606] ? __stack_depot_save+0x35/0x500 [ 48.481651][ T3606] ? kfree+0xe2/0x580 [ 48.485618][ T3606] ? kasan_save_stack+0x2e/0x40 [ 48.490457][ T3606] ? kasan_save_stack+0x1e/0x40 [ 48.495294][ T3606] ? kasan_set_track+0x21/0x30 [ 48.500044][ T3606] ? kasan_set_free_info+0x20/0x30 [ 48.505166][ T3606] ? ____kasan_slab_free+0x166/0x1c0 [ 48.510440][ T3606] ? slab_free_freelist_hook+0x8b/0x1c0 [ 48.515973][ T3606] ? kfree+0xe2/0x580 [ 48.519936][ T3606] ? tomoyo_path_number_perm+0x441/0x590 [ 48.525559][ T3606] ? security_file_ioctl+0x50/0xb0 [ 48.530653][ T3606] ? __x64_sys_ioctl+0xb3/0x200 [ 48.535489][ T3606] ? do_syscall_64+0x35/0xb0 [ 48.540062][ T3606] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 48.546110][ T3606] ? lockdep_hardirqs_on+0x79/0x100 [ 48.551310][ T3606] ? find_held_lock+0x2d/0x110 [ 48.556059][ T3606] ? lock_downgrade+0x6e0/0x6e0 [ 48.560911][ T3606] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 48.566718][ T3606] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 48.572514][ T3606] ? lockdep_hardirqs_on+0x79/0x100 [ 48.577715][ T3606] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 48.583521][ T3606] kvm_vm_ioctl+0x15df/0x2380 [ 48.588187][ T3606] ? tomoyo_path_number_perm+0x204/0x590 [ 48.593821][ T3606] ? lock_downgrade+0x6e0/0x6e0 [ 48.598660][ T3606] ? kvm_unregister_device_ops+0x90/0x90 [ 48.604275][ T3606] ? kfree+0xe2/0x580 [ 48.608243][ T3606] ? tomoyo_path_number_perm+0x24e/0x590 [ 48.613926][ T3606] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 48.619741][ T3606] ? __sanitizer_cov_trace_switch+0x50/0x90 [ 48.625712][ T3606] ? do_vfs_ioctl+0x132/0x15c0 [ 48.630478][ T3606] ? vfs_fileattr_set+0xbe0/0xbe0 [ 48.635495][ T3606] ? find_held_lock+0x2d/0x110 [ 48.640264][ T3606] ? calibrate_delay+0x583/0x1120 [ 48.645289][ T3606] ? lock_downgrade+0x6e0/0x6e0 [ 48.650136][ T3606] ? _raw_spin_unlock_irq+0x1f/0x40 [ 48.655325][ T3606] ? bpf_lsm_file_ioctl+0x5/0x10 [ 48.660257][ T3606] ? kvm_unregister_device_ops+0x90/0x90 [ 48.666136][ T3606] __x64_sys_ioctl+0x193/0x200 [ 48.670891][ T3606] do_syscall_64+0x35/0xb0 [ 48.675297][ T3606] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 48.681176][ T3606] RIP: 0033:0x7fd65dc84b69 [ 48.685577][ T3606] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 48.705169][ T3606] RSP: 002b:00007ffc633540b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 48.713567][ T3606] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd65dc84b69 [ 48.721525][ T3606] RDX: 0000000020000040 RSI: 000000004048aec9 RDI: 0000000000000004 [ 48.729480][ T3606] RBP: 00007fd65dc48d10 R08: 0000000000000000 R09: 0000000000000000 [ 48.737434][ T3606] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd65dc48da0 [ 48.745523][ T3606] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 48.753513][ T3606] [ 48.756521][ T3606] Modules linked in: [ 48.760407][ T3606] CR2: ffffffffffffffea [ 48.764563][ T3606] ---[ end trace 0000000000000000 ]--- [ 48.770018][ T3606] RIP: 0010:eventfd_ctx_put+0x1e/0x110 [ 48.775478][ T3606] Code: ff ff e8 65 7e dc ff e9 b5 fb ff ff 41 54 55 48 89 fd 53 bb ff ff ff ff e8 ef 1d 90 ff be 04 00 00 00 48 89 ef e8 72 80 dc ff 0f c1 5d 00 bf 01 00 00 00 89 de e8 91 1a 90 ff 83 fb 01 74 35 [ 48.796040][ T3606] RSP: 0018:ffffc9000365f748 EFLAGS: 00010246 [ 48.802089][ T3606] RAX: 0000000000000001 RBX: 00000000ffffffff RCX: ffffffff81ebeb3e [ 48.810057][ T3606] RDX: fffffbfffffffffe RSI: 0000000000000004 RDI: ffffffffffffffea [ 48.818121][ T3606] RBP: ffffffffffffffea R08: 0000000000000001 R09: ffffffffffffffed [ 48.826088][ T3606] R10: fffffbfffffffffd R11: 0000000000000000 R12: 0000000000000003 [ 48.834051][ T3606] R13: ffffffffffffffea R14: ffffc900037b1000 R15: 00000000ffffffea [ 48.842007][ T3606] FS: 0000555556297300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 48.850923][ T3606] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.857511][ T3606] CR2: ffffffffffffffea CR3: 0000000072461000 CR4: 00000000003526f0 [ 48.865489][ T3606] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.873456][ T3606] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.881416][ T3606] Kernel panic - not syncing: Fatal exception [ 48.887709][ T3606] Kernel Offset: disabled [ 48.892028][ T3606] Rebooting in 86400 seconds..