./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1389866584 <...> Warning: Permanently added '10.128.0.2' (ED25519) to the list of known hosts. execve("./syz-executor1389866584", ["./syz-executor1389866584"], 0x7ffcc10f41e0 /* 10 vars */) = 0 brk(NULL) = 0x555556c6e000 brk(0x555556c6ed00) = 0x555556c6ed00 arch_prctl(ARCH_SET_FS, 0x555556c6e380) = 0 set_tid_address(0x555556c6e650) = 5009 set_robust_list(0x555556c6e660, 24) = 0 rseq(0x555556c6eca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1389866584", 4096) = 28 getrandom("\x52\xb5\xeb\x31\xd1\xdf\x19\xf8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556c6ed00 brk(0x555556c8fd00) = 0x555556c8fd00 brk(0x555556c90000) = 0x555556c90000 mprotect(0x7f0f344bd000, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556c6e650) = 5010 ./strace-static-x86_64: Process 5010 attached [pid 5010] set_robust_list(0x555556c6e660, 24) = 0 [pid 5010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5010] setpgid(0, 0) = 0 [pid 5010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5010] write(3, "1000", 4) = 4 [pid 5010] close(3) = 0 [pid 5010] openat(AT_FDCWD, "/dev/dri/card1", O_RDONLY) = 3 [pid 5010] openat(AT_FDCWD, "/dev/dri/card1", O_RDONLY) = 4 [pid 5010] ioctl(4, DRM_IOCTL_MODE_GETRESOURCES, 0x20000140) = 0 [pid 5010] openat(AT_FDCWD, "/dev/dri/card1", O_RDONLY) = 5 [pid 5010] ioctl(5, DRM_IOCTL_MODE_GETRESOURCES, 0x20000140) = 0 [pid 5010] ioctl(5, DRM_IOCTL_MODE_GETCRTC, 0x20000480) = 0 [ 138.696286][ T5010] ===================================================== [ 138.703740][ T5010] BUG: KMSAN: uninit-value in drm_mode_setcrtc+0x1ad3/0x24a0 [ 138.711353][ T5010] drm_mode_setcrtc+0x1ad3/0x24a0 [ 138.716511][ T5010] drm_ioctl_kernel+0x5bc/0x740 [ 138.722695][ T5010] drm_ioctl+0xd12/0x1590 [ 138.727139][ T5010] __se_sys_ioctl+0x225/0x410 [ 138.732035][ T5010] __x64_sys_ioctl+0x96/0xe0 [ 138.736788][ T5010] do_syscall_64+0x44/0x110 [ 138.741607][ T5010] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 138.747680][ T5010] [ 138.750159][ T5010] Uninit was created at: [ 138.754579][ T5010] slab_post_alloc_hook+0x129/0xa70 [ 138.760043][ T5010] __kmem_cache_alloc_node+0x5c9/0x970 [ 138.765657][ T5010] __kmalloc+0x121/0x3c0 [ 138.770188][ T5010] drm_mode_setcrtc+0x1dba/0x24a0 [ 138.775387][ T5010] drm_ioctl_kernel+0x5bc/0x740 [ 138.780534][ T5010] drm_ioctl+0xd12/0x1590 [ 138.785025][ T5010] __se_sys_ioctl+0x225/0x410 [ 138.789916][ T5010] __x64_sys_ioctl+0x96/0xe0 [ 138.794696][ T5010] do_syscall_64+0x44/0x110 [ 138.799295][ T5010] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 138.805475][ T5010] [ 138.807880][ T5010] CPU: 0 PID: 5010 Comm: syz-executor138 Not tainted 6.7.0-rc4-syzkaller-00424-gc527f5606aa5 #0 [ 138.818586][ T5010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 138.828833][ T5010] ===================================================== [ 138.835934][ T5010] Disabling lock debugging due to kernel taint [ 138.842324][ T5010] Kernel panic - not syncing: kmsan.panic set ... [ 138.848836][ T5010] CPU: 0 PID: 5010 Comm: syz-executor138 Tainted: G B 6.7.0-rc4-syzkaller-00424-gc527f5606aa5 #0 [ 138.860861][ T5010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 138.871023][ T5010] Call Trace: [ 138.874374][ T5010] [ 138.877375][ T5010] dump_stack_lvl+0x1bf/0x240 [ 138.882164][ T5010] dump_stack+0x1e/0x20 [ 138.886412][ T5010] panic+0x4de/0xc90 [ 138.890438][ T5010] ? add_taint+0x108/0x1a0 [ 138.894948][ T5010] kmsan_report+0x2d0/0x2d0 [ 138.899588][ T5010] ? __msan_warning+0x96/0x110 [ 138.904524][ T5010] ? drm_mode_setcrtc+0x1ad3/0x24a0 [ 138.909851][ T5010] ? drm_ioctl_kernel+0x5bc/0x740 [ 138.915013][ T5010] ? drm_ioctl+0xd12/0x1590 [ 138.919697][ T5010] ? __se_sys_ioctl+0x225/0x410 [ 138.924715][ T5010] ? __x64_sys_ioctl+0x96/0xe0 [ 138.929583][ T5010] ? do_syscall_64+0x44/0x110 [ 138.934411][ T5010] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 138.940670][ T5010] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 138.946651][ T5010] ? ___drm_dbg+0x11c/0x2b0 [ 138.951324][ T5010] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 138.957751][ T5010] ? drm_fb_release+0x860/0x860 [ 138.962784][ T5010] ? kmsan_internal_unpoison_memory+0x14/0x20 [ 138.969050][ T5010] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 138.975052][ T5010] __msan_warning+0x96/0x110 [ 138.979810][ T5010] drm_mode_setcrtc+0x1ad3/0x24a0 [ 138.985010][ T5010] ? drm_crtc_check_viewport+0x2b0/0x2b0 [ 138.990753][ T5010] drm_ioctl_kernel+0x5bc/0x740 [ 138.995791][ T5010] ? drm_crtc_check_viewport+0x2b0/0x2b0 [ 139.001563][ T5010] drm_ioctl+0xd12/0x1590 [ 139.006080][ T5010] ? drm_crtc_check_viewport+0x2b0/0x2b0 [ 139.011845][ T5010] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 139.017850][ T5010] ? drm_ioctl_kernel+0x740/0x740 [ 139.023071][ T5010] __se_sys_ioctl+0x225/0x410 [ 139.027958][ T5010] __x64_sys_ioctl+0x96/0xe0 [ 139.032714][ T5010] do_syscall_64+0x44/0x110 [ 139.037339][ T5010] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 139.043408][ T5010] RIP: 0033:0x7f0f3444ab39 [ 139.047918][ T5010] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 139.067708][ T5010] RSP: 002b:00007ffe37583f98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 139.076287][ T5010] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0f3444ab39 [ 139.084393][ T5010] RDX: 0000000020000200 RSI: 00000000c06864a2 RDI: 0000000000000003 [ 139.092480][ T5010] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000006 [ 139.100534][ T5010] R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000 [ 139.108608][ T5010] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 [ 139.116719][ T5010] [ 139.119959][ T5010] Kernel Offset: disabled [ 139.124327][ T5010] Rebooting in 86400 seconds..