./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3874875103
<...>
Warning: Permanently added '10.128.0.241' (ED25519) to the list of known hosts.
execve("./syz-executor3874875103", ["./syz-executor3874875103"], 0x7ffce7360010 /* 10 vars */) = 0
brk(NULL) = 0x5555572d5000
brk(0x5555572d5d00) = 0x5555572d5d00
arch_prctl(ARCH_SET_FS, 0x5555572d5380) = 0
set_tid_address(0x5555572d5650) = 359
set_robust_list(0x5555572d5660, 24) = 0
rseq(0x5555572d5ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented)
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3874875103", 4096) = 28
getrandom("\x36\xdc\xcd\xac\x77\xe5\x27\xe3", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x5555572d5d00
brk(0x5555572f6d00) = 0x5555572f6d00
brk(0x5555572f7000) = 0x5555572f7000
mprotect(0x7fdc0b914000, 16384, PROT_READ) = 0
mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000
mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000
mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572d5650) = 360
./strace-static-x86_64: Process 360 attached
[pid 360] set_robust_list(0x5555572d5660, 24) = 0
[pid 360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 360] setpgid(0, 0) = 0
[pid 360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 360] write(3, "1000", 4) = 4
[pid 360] close(3) = 0
[pid 360] write(1, "executing program\n", 18executing program
) = 18
[pid 360] openat(AT_FDCWD, "/dev/kvm", O_RDONLY) = 3
[ 26.236502][ T23] audit: type=1400 audit(1742052133.170:66): avc: denied { execmem } for pid=359 comm="syz-executor387" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 26.255856][ T23] audit: type=1400 audit(1742052133.190:67): avc: denied { read } for pid=360 comm="syz-executor387" name="kvm" dev="devtmpfs" ino=96 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:kvm_device_t tclass=chr_file permissive=1
[ 26.256686][ T360] 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.
[ 26.287584][ T23] audit: type=1400 audit(1742052133.190:68): avc: denied { open } for pid=360 comm="syz-executor387" path="/dev/kvm" dev="devtmpfs" ino=96 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:kvm_device_t tclass=chr_file permissive=1
[pid 360] ioctl(3, KVM_CREATE_VM, 0) = 4
[pid 360] ioctl(4, KVM_CREATE_IRQCHIP, 0) = 0
[pid 360] ioctl(4, KVM_CREATE_VCPU, 0) = 5
[ 26.317861][ T23] audit: type=1400 audit(1742052133.190:69): avc: denied { ioctl } for pid=360 comm="syz-executor387" path="/dev/kvm" dev="devtmpfs" ino=96 ioctlcmd=0xae01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:kvm_device_t tclass=chr_file permissive=1
[ 26.369018][ T360] BUG: kernel NULL pointer dereference, address: 0000000000000086
[ 26.376647][ T360] #PF: supervisor instruction fetch in kernel mode
[ 26.382983][ T360] #PF: error_code(0x0010) - not-present page
[ 26.388796][ T360] PGD 0 P4D 0
[ 26.392008][ T360] Oops: 0010 [#1] PREEMPT SMP KASAN
[ 26.397052][ T360] CPU: 1 PID: 360 Comm: syz-executor387 Not tainted 5.4.290-syzkaller-00017-g6b07fcd94a6a #0
[ 26.407047][ T360] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[ 26.416963][ T360] RIP: 0010:0x86
[ 26.420306][ T360] Code: Bad RIP value.
[ 26.424205][ T360] RSP: 0018:ffff8881dea8f308 EFLAGS: 00010086
[ 26.430111][ T360] RAX: ffff8881dea8f338 RBX: dffffc0000000000 RCX: ffff8881f32eaf40
[ 26.437919][ T360] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
[ 26.445740][ T360] RBP: 0000000000000230 R08: ffffffff8231cd01 R09: ffffffff811c8f95
[ 26.453540][ T360] R10: ffff8881f32eaf40 R11: 0000000000000002 R12: ffffffff84600208
[ 26.461352][ T360] R13: fffffe0000000238 R14: ffff8881ee710000 R15: fffffe000000023b
[ 26.469165][ T360] FS: 00005555572d5380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
[ 26.477928][ T360] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 26.484345][ T360] CR2: 000000000000005c CR3: 00000001da17d000 CR4: 00000000003426a0
[ 26.492161][ T360] Call Trace:
[ 26.495302][ T360] ? __die+0xb4/0x100
[ 26.499106][ T360] ? no_context+0xac7/0xd20
[ 26.503447][ T360] ? is_prefetch+0x4b0/0x4b0
[ 26.507872][ T360] ? rcu_preempt_deferred_qs+0xa4/0x2b0
[ 26.513258][ T360] ? __do_page_fault+0xa72/0xbb0
[ 26.518032][ T360] ? vmx_spec_ctrl_restore_host+0x83/0xfd
[ 26.523586][ T360] ? __bad_area_nosemaphore+0xc0/0x470
[ 26.528879][ T360] ? page_fault+0x2f/0x40
[ 26.533043][ T360] ? irq_entries_start+0x18/0x660
[ 26.537908][ T360] ? vmx_handle_exit_irqoff+0x45/0x220
[ 26.543213][ T360] ? check_preemption_disabled+0x91/0x320
[ 26.548758][ T360] ? handle_external_interrupt_irqoff+0x148/0x2f0
[ 26.555007][ T360] ? handle_external_interrupt_irqoff+0x12a/0x2f0
[ 26.561511][ T360] ? irq_entries_start+0x18/0x660
[ 26.566371][ T360] ? vcpu_enter_guest+0x2d06/0x9f70
[ 26.571404][ T360] ? check_preemption_disabled+0x9f/0x320
[ 26.576958][ T360] ? _raw_spin_lock_irqsave+0xf9/0x210
[ 26.582515][ T360] ? check_preemption_disabled+0x9f/0x320
[ 26.588068][ T360] ? _raw_spin_lock+0x1b0/0x1b0
[ 26.592844][ T360] ? debug_smp_processor_id+0x20/0x20
[ 26.598055][ T360] ? local_bh_enable+0x20/0x20
[ 26.602648][ T360] ? internal_add_timer+0x34b/0x430
[ 26.607685][ T360] ? _raw_spin_unlock_irqrestore+0x57/0x80
[ 26.613323][ T360] ? __mod_timer+0x72b/0x13e0
[ 26.617840][ T360] ? mod_timer_pending+0x20/0x20
[ 26.622618][ T360] ? _raw_spin_lock_irqsave+0xf9/0x210
[ 26.627913][ T360] ? read_msr+0x40/0x40
[ 26.631899][ T360] ? check_preemption_disabled+0x9f/0x320
[ 26.637459][ T360] ? __fd_install+0x119/0x230
[ 26.641968][ T360] ? update_load_avg+0x40f/0x1210
[ 26.646825][ T360] ? cpuacct_charge+0xe2/0x170
[ 26.651427][ T360] ? enqueue_task_fair+0xaac/0x1e40
[ 26.656461][ T360] ? check_preempt_wakeup+0x41a/0x9f0
[ 26.661673][ T360] ? vmx_vcpu_load_vmcs+0x655/0x8b0
[ 26.666705][ T360] ? try_to_wake_up+0x7c5/0x14f0
[ 26.671473][ T360] ? read_msr+0x40/0x40
[ 26.675469][ T360] ? check_preemption_disabled+0x9f/0x320
[ 26.681025][ T360] ? check_preemption_disabled+0x9f/0x320
[ 26.686578][ T360] ? debug_smp_processor_id+0x20/0x20
[ 26.691793][ T360] ? kvm_arch_vcpu_ioctl_run+0x748/0x18d0
[ 26.697347][ T360] ? kvm_vcpu_ioctl+0x7f9/0xd10
[ 26.702029][ T360] ? create_vcpu_fd+0x120/0x120
[ 26.706714][ T360] ? _raw_spin_lock_irq+0xa5/0x1b0
[ 26.711661][ T360] ? _raw_spin_lock_irqsave+0x210/0x210
[ 26.717042][ T360] ? cgroup_update_frozen+0x157/0xab0
[ 26.722250][ T360] ? cgroup_update_frozen+0x157/0xab0
[ 26.727460][ T360] ? cgroup_leave_frozen+0x13c/0x290
[ 26.732612][ T360] ? ptrace_stop+0x6ee/0xa30
[ 26.737003][ T360] ? create_vcpu_fd+0x120/0x120
[ 26.741691][ T360] ? do_vfs_ioctl+0x742/0x1720
[ 26.746292][ T360] ? ioctl_preallocate+0x250/0x250
[ 26.751238][ T360] ? check_preemption_disabled+0x153/0x320
[ 26.756879][ T360] ? syscall_trace_enter+0x650/0x940
[ 26.761999][ T360] ? do_syscall_64+0x1c0/0x1c0
[ 26.766601][ T360] ? switch_fpu_return+0x1d4/0x410
[ 26.771547][ T360] ? security_file_ioctl+0x7d/0xa0
[ 26.776496][ T360] ? __x64_sys_ioctl+0xd4/0x110
[ 26.781184][ T360] ? do_syscall_64+0xca/0x1c0
[ 26.785701][ T360] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1
[ 26.791590][ T360] Modules linked in:
[ 26.795424][ T360] CR2: 0000000000000086
[ 26.799409][ T360] ---[ end trace cf6f84a7dba4bb8d ]---
[ 26.804699][ T360] RIP: 0010:0x86
[ 26.808084][ T360] Code: Bad RIP value.
[ 26.811983][ T360] RSP: 0018:ffff8881dea8f308 EFLAGS: 00010086
[ 26.817898][ T360] RAX: ffff8881dea8f338 RBX: dffffc0000000000 RCX: ffff8881f32eaf40
[ 26.825700][ T360] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
[ 26.833510][ T360] RBP: 0000000000000230 R08: ffffffff8231cd01 R09: ffffffff811c8f95
[ 26.841330][ T360] R10: ffff8881f32eaf40 R11: 0000000000000002 R12: ffffffff84600208
[ 26.849135][ T360] R13: fffffe0000000238 R14: ffff8881ee710000 R15: fffffe000000023b
[ 26.857040][ T360] FS: 00005555572d5380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
[ 26.865798][ T360] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 26.872218][ T360] CR2: 000000000000005c CR3: 00000001da17d000 CR4: 00000000003426a0
[ 26.880031][ T360] Kernel panic - not syncing: Fatal exception
[ 26.886041][ T360] Kernel Offset: disabled
[ 26.890105][ T360] Rebooting in 86400 seconds..