./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2772450043 <...> Warning: Permanently added '10.128.1.71' (ED25519) to the list of known hosts. execve("./syz-executor2772450043", ["./syz-executor2772450043"], 0x7ffd98e9ff00 /* 10 vars */) = 0 brk(NULL) = 0x5555560b3000 brk(0x5555560b3d40) = 0x5555560b3d40 arch_prctl(ARCH_SET_FS, 0x5555560b33c0) = 0 set_tid_address(0x5555560b3690) = 292 set_robust_list(0x5555560b36a0, 24) = 0 rseq(0x5555560b3ce0, 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-executor2772450043", 4096) = 28 getrandom("\xa8\xb8\xdc\x5d\x9e\x40\x01\x02", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555560b3d40 brk(0x5555560d4d40) = 0x5555560d4d40 brk(0x5555560d5000) = 0x5555560d5000 mprotect(0x7fed070b1000, 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 futex(0x7fed070b73ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fed07050320, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fed070419a0}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fed06fcc000 mprotect(0x7fed06fcd000, 131072, PROT_READ|PROT_WRITE) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fed06fec990, parent_tid=0x7fed06fec990, exit_signal=0, stack=0x7fed06fcc000, stack_size=0x20300, tls=0x7fed06fec6c0}./strace-static-x86_64: Process 293 attached => {parent_tid=[293]}, 88) = 293 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] futex(0x7fed070b73e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7fed070b73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] set_robust_list(0x7fed06fec9a0, 24) = 0 [pid 293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 293] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 293] futex(0x7fed070b73ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 293] <... futex resumed>) = 1 [pid 292] futex(0x7fed070b73e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7fed070b73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 293] futex(0x7fed070b73ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 293] futex(0x7fed070b73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7fed070b73e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 293] <... futex resumed>) = 0 [pid 292] futex(0x7fed070b73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 293] futex(0x7fed070b73ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7fed070b73e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7fed070b73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [pid 293] read(3, "\x68\x00\x00\x00\x1a\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x24\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x73\x01\x00\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 8224) = 104 [pid 293] futex(0x7fed070b73ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7fed070b73e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7fed070b73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [pid 293] read(3, [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7fed070b73fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fed06fab000 [pid 292] mprotect(0x7fed06fac000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 292] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fed06fcb990, parent_tid=0x7fed06fcb990, exit_signal=0, stack=0x7fed06fab000, stack_size=0x20300, tls=0x7fed06fcb6c0}./strace-static-x86_64: Process 295 attached => {parent_tid=[295]}, 88) = 295 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] futex(0x7fed070b73f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7fed070b73fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] set_robust_list(0x7fed06fcb9a0, 24) = 0 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] write(3, "\x28\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00\x9a\x09\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 40) = 40 [pid 295] futex(0x7fed070b73fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7fed070b73f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7fed070b73fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] openat(AT_FDCWD, "./file0/file0", O_WRONLY|O_CREAT|O_CLOEXEC, 000 [pid 293] <... read resumed>"\x2e\x00\x00\x00\x01\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x27\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [ 19.803265][ T30] audit: type=1400 audit(1710691851.033:66): avc: denied { execmem } for pid=292 comm="syz-executor277" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 19.811064][ T30] audit: type=1400 audit(1710691851.043:67): avc: denied { read write } for pid=292 comm="syz-executor277" name="fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 19.814405][ T30] audit: type=1400 audit(1710691851.043:68): avc: denied { open } for pid=292 comm="syz-executor277" path="/dev/fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 19.818472][ T30] audit: type=1400 audit(1710691851.043:69): avc: denied { mounton } for pid=292 comm="syz-executor277" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 19.821864][ T30] audit: type=1400 audit(1710691851.053:70): avc: denied { mount } for pid=292 comm="syz-executor277" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 293] write(3, "\x90\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 144) = 144 [pid 293] futex(0x7fed070b73ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 19.875893][ T295] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 19.887691][ T295] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 19.895937][ T295] CPU: 0 PID: 295 Comm: syz-executor277 Not tainted 5.15.148-syzkaller-00718-g993bed180178 #0 [ 19.906000][ T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 19.915985][ T295] RIP: 0010:fuse_atomic_open+0x26f/0x3a90 [ 19.921540][ T295] Code: e0 40 4c 8b 64 24 48 75 07 e8 8d d0 66 ff eb 37 48 8b 44 24 70 48 8d 58 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 03 e1 a8 ff 48 83 3b 00 0f 84 a6 00 [ 19.940979][ T295] RSP: 0018:ffffc90000967280 EFLAGS: 00010202 [ 19.946881][ T295] RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 [ 19.954693][ T295] RDX: ffff88811e872780 RSI: 0000000000000040 RDI: 0000000000000000 [ 19.962505][ T295] RBP: ffffc900009678f0 R08: ffffffff820950e2 R09: fffff5200012cd99 [ 19.970317][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810f6be428 [ 19.978126][ T295] R13: ffff88811e85c800 R14: 1ffff9200012ce6c R15: 0000000000000008 [ 19.985941][ T295] FS: 00007fed06fcb6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 19.994705][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.001128][ T295] CR2: 00007fed06fcbd58 CR3: 000000011e159000 CR4: 00000000003506b0 [ 20.008945][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.016751][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.024563][ T295] Call Trace: [ 20.027688][ T295] [ 20.030465][ T295] ? __die_body+0x62/0xb0 [ 20.034630][ T295] ? die_addr+0x9f/0xd0 [ 20.038628][ T295] ? exc_general_protection+0x311/0x4b0 [ 20.044004][ T295] ? asm_exc_general_protection+0x27/0x30 [ 20.049558][ T295] ? fuse_atomic_open+0x242/0x3a90 [ 20.054507][ T295] ? fuse_atomic_open+0x26f/0x3a90 [ 20.059459][ T295] ? slab_post_alloc_hook+0x72/0x2c0 [ 20.064574][ T295] ? avc_alloc_node+0x8f/0x500 [ 20.069175][ T295] ? avc_alloc_node+0x8f/0x500 [ 20.073774][ T295] ? fuse_rename2+0x4ad0/0x4ad0 [ 20.078460][ T295] ? __kasan_check_write+0x14/0x20 [ 20.083408][ T295] ? __kasan_check_write+0x14/0x20 [ 20.088358][ T295] ? _raw_spin_lock_irqsave+0xf9/0x210 [ 20.093651][ T295] ? _raw_spin_lock+0x1b0/0x1b0 [ 20.098338][ T295] ? avc_xperms_populate+0x4c7/0x590 [ 20.103458][ T295] ? _raw_spin_unlock_irqrestore+0x5c/0x80 [ 20.109099][ T295] ? avc_compute_av+0x4f5/0x830 [ 20.113794][ T295] ? avc_has_perm_noaudit+0x2dd/0x430 [ 20.118997][ T295] ? avc_denied+0x1b0/0x1b0 [ 20.123336][ T295] ? avc_has_perm+0x16f/0x260 [ 20.127847][ T295] ? avc_has_perm_noaudit+0x430/0x430 [ 20.133161][ T295] ? selinux_determine_inode_label+0x29c/0x3b0 [ 20.139152][ T295] ? may_create+0x3d3/0x540 [ 20.143487][ T295] ? selinux_determine_inode_label+0x3b0/0x3b0 [ 20.149476][ T295] ? make_kgid+0x6f0/0x6f0 [ 20.153738][ T295] ? selinux_inode_create+0x22/0x30 [ 20.158773][ T295] ? security_inode_create+0xbc/0x100 [ 20.163973][ T295] ? fuse_rename2+0x4ad0/0x4ad0 [ 20.168657][ T295] path_openat+0xfde/0x2f40 [ 20.173011][ T295] ? do_filp_open+0x460/0x460 [ 20.177511][ T295] do_filp_open+0x21c/0x460 [ 20.181867][ T295] ? vfs_tmpfile+0x2c0/0x2c0 [ 20.186290][ T295] do_sys_openat2+0x13f/0x830 [ 20.190792][ T295] ? cgroup_leave_frozen+0x164/0x2c0 [ 20.195915][ T295] ? do_sys_open+0x220/0x220 [ 20.200339][ T295] ? ptrace_notify+0x24c/0x350 [ 20.204938][ T295] __x64_sys_openat+0x243/0x290 [ 20.209626][ T295] ? __ia32_sys_open+0x270/0x270 [ 20.214397][ T295] ? __kasan_check_read+0x11/0x20 [ 20.219263][ T295] ? syscall_enter_from_user_mode+0x70/0x1b0 [ 20.225082][ T295] do_syscall_64+0x3d/0xb0 [ 20.229335][ T295] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 20.235056][ T295] RIP: 0033:0x7fed0702a479 [ 20.239309][ T295] 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 b0 ff ff ff f7 d8 64 89 01 48 [ 20.258863][ T295] RSP: 002b:00007fed06fcb218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 20.267105][ T295] RAX: ffffffffffffffda RBX: 00007fed070b73f8 RCX: 00007fed0702a479 [pid 293] futex(0x7fed070b73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 20.274927][ T295] RDX: 0000000000080041 RSI: 00000000200001c0 RDI: 00000000ffffff9c [ 20.282738][ T295] RBP: 00007fed070b73f0 R08: 0000000000000000 R09: 0000000000000000 [ 20.290638][ T295] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fed07084024 [ 20.298438][ T295] R13: 000000000000006e R14: 0030656c69662f30 R15: 2f30656c69662f2e [ 20.306253][ T295] [ 20.309114][ T295] Modules linked in: [ 20.313590][ T295] ---[ end trace e3713c7dcd545492 ]--- [ 20.318999][ T295] RIP: 0010:fuse_atomic_open+0x26f/0x3a90 [ 20.324577][ T295] Code: e0 40 4c 8b 64 24 48 75 07 e8 8d d0 66 ff eb 37 48 8b 44 24 70 48 8d 58 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 03 e1 a8 ff 48 83 3b 00 0f 84 a6 00 [ 20.344052][ T295] RSP: 0018:ffffc90000967280 EFLAGS: 00010202 [ 20.349890][ T295] RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 [ 20.357701][ T295] RDX: ffff88811e872780 RSI: 0000000000000040 RDI: 0000000000000000 [ 20.365584][ T295] RBP: ffffc900009678f0 R08: ffffffff820950e2 R09: fffff5200012cd99 [ 20.373419][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810f6be428 [ 20.381214][ T295] R13: ffff88811e85c800 R14: 1ffff9200012ce6c R15: 0000000000000008 [ 20.389032][ T295] FS: 00007fed06fcb6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 20.397800][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.404198][ T295] CR2: 00007fed06fcbd58 CR3: 000000011e159000 CR4: 00000000003506b0 [ 20.412035][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.419843][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.427665][ T295] Kernel panic - not syncing: Fatal exception [ 20.433763][ T295] Kernel Offset: disabled [ 20.437892][ T295] Rebooting in 86400 seconds..