./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor54405966 <...> Warning: Permanently added '10.128.0.247' (ED25519) to the list of known hosts. execve("./syz-executor54405966", ["./syz-executor54405966"], 0x7ffc43c7c060 /* 10 vars */) = 0 brk(NULL) = 0x555557114000 brk(0x555557114d40) = 0x555557114d40 arch_prctl(ARCH_SET_FS, 0x5555571143c0) = 0 set_tid_address(0x555557114690) = 291 set_robust_list(0x5555571146a0, 24) = 0 rseq(0x555557114ce0, 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-executor54405966", 4096) = 26 getrandom("\x31\x95\x63\xd5\x4c\x81\x90\x0b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557114d40 brk(0x555557135d40) = 0x555557135d40 brk(0x555557136000) = 0x555557136000 mprotect(0x7efe100ae000, 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 mkdir("./syzkaller.jyyZoE", 0700) = 0 chmod("./syzkaller.jyyZoE", 0777) = 0 chdir("./syzkaller.jyyZoE") = 0 futex(0x7efe100b43ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7efe1004d8f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efe1003ea70}, 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) = 0x7efe0ffc9000 mprotect(0x7efe0ffca000, 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=0x7efe0ffe9990, parent_tid=0x7efe0ffe9990, exit_signal=0, stack=0x7efe0ffc9000, stack_size=0x20300, tls=0x7efe0ffe96c0} => {parent_tid=[292]}, 88) = 292 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7efe100b43e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7efe100b43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 292 attached [pid 292] set_robust_list(0x7efe0ffe99a0, 24) = 0 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 292] futex(0x7efe100b43ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 291] <... futex resumed>) = 0 [pid 291] futex(0x7efe100b43e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] futex(0x7efe100b43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] <... futex resumed>) = 1 [pid 292] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 292] futex(0x7efe100b43ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 291] <... futex resumed>) = 0 [pid 291] futex(0x7efe100b43e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] futex(0x7efe100b43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] <... futex resumed>) = 1 [pid 292] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 292] futex(0x7efe100b43ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 291] <... futex resumed>) = 0 [pid 291] futex(0x7efe100b43e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] futex(0x7efe100b43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] <... futex resumed>) = 1 [pid 292] read(3, "\x38\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\x20\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x83", 8224) = 56 [pid 292] futex(0x7efe100b43ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 291] <... futex resumed>) = 0 [pid 291] futex(0x7efe100b43e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] futex(0x7efe100b43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] <... futex resumed>) = 1 [pid 292] read(3, [pid 291] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 291] futex(0x7efe100b43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 291] futex(0x7efe100b43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 291] futex(0x7efe100b43fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efe0ffa8000 [pid 291] mprotect(0x7efe0ffa9000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 291] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 291] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efe0ffc8990, parent_tid=0x7efe0ffc8990, exit_signal=0, stack=0x7efe0ffa8000, stack_size=0x20300, tls=0x7efe0ffc86c0} => {parent_tid=[294]}, 88) = 294 ./strace-static-x86_64: Process 294 attached [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] futex(0x7efe100b43f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] futex(0x7efe100b43fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] set_robust_list(0x7efe0ffc89a0, 24) = 0 [pid 294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 294] 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 294] futex(0x7efe100b43fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 291] <... futex resumed>) = 0 [pid 291] futex(0x7efe100b43f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 25.564219][ T24] audit: type=1400 audit(1710692787.849:66): avc: denied { execmem } for pid=291 comm="syz-executor544" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.570206][ T24] audit: type=1400 audit(1710692787.859:67): avc: denied { read write } for pid=291 comm="syz-executor544" name="fuse" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 25.573908][ T24] audit: type=1400 audit(1710692787.859:68): avc: denied { open } for pid=291 comm="syz-executor544" path="/dev/fuse" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 25.577167][ T24] audit: type=1400 audit(1710692787.859:69): avc: denied { mounton } for pid=291 comm="syz-executor544" path="/root/syzkaller.jyyZoE/file0" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 25.580529][ T24] audit: type=1400 audit(1710692787.859:70): avc: denied { mount } for pid=291 comm="syz-executor544" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 291] futex(0x7efe100b43fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] <... futex resumed>) = 1 [pid 294] openat(AT_FDCWD, "./file0/file0", O_WRONLY|O_CREAT|O_CLOEXEC, 000 [pid 292] <... 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\x26\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 292] 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 292] futex(0x7efe100b43ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 25.625916][ T294] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 25.637714][ T294] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 25.645960][ T294] CPU: 0 PID: 294 Comm: syz-executor544 Not tainted 5.10.209-syzkaller-00435-gdd976ecce2ce #0 [ 25.656053][ T294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 25.665941][ T294] RIP: 0010:fuse_atomic_open+0x27f/0x34e0 [ 25.671473][ T294] Code: e0 40 4c 8b 64 24 20 75 07 e8 1d b3 6c ff eb 37 48 8b 44 24 60 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 f3 2b aa ff 48 83 3b 00 0f 84 a9 00 [ 25.690912][ T294] RSP: 0018:ffffc90000b572e0 EFLAGS: 00010202 [ 25.696813][ T294] RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 [ 25.704623][ T294] RDX: ffff88811ef8cf00 RSI: 0000000000000040 RDI: 0000000000000000 [ 25.712619][ T294] RBP: ffffc90000b57910 R08: ffffffff81fdf4c2 R09: ffffed10239264ec [ 25.720430][ T294] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c932428 [ 25.728234][ T294] R13: ffff88811efaf000 R14: 1ffff9200016ae74 R15: 0000000000000008 [ 25.736170][ T294] FS: 00007efe0ffc86c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 25.744918][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.751339][ T294] CR2: 00007efe0ffc8d58 CR3: 000000011ef63000 CR4: 00000000003506b0 [ 25.759155][ T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.766963][ T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.774773][ T294] Call Trace: [ 25.777911][ T294] ? __die_body+0x62/0xb0 [ 25.782066][ T294] ? die_addr+0x9f/0xd0 [ 25.786058][ T294] ? exc_general_protection+0x3ff/0x490 [ 25.791444][ T294] ? asm_exc_general_protection+0x1e/0x30 [ 25.796995][ T294] ? fuse_atomic_open+0x252/0x34e0 [ 25.801950][ T294] ? fuse_atomic_open+0x27f/0x34e0 [ 25.807068][ T294] ? fuse_rename2+0x4aa0/0x4aa0 [ 25.811752][ T294] ? avc_alloc_node+0x7e/0x360 [ 25.816358][ T294] ? __kasan_check_write+0x14/0x20 [ 25.821299][ T294] ? _raw_spin_lock_irqsave+0xf9/0x210 [ 25.826594][ T294] ? _raw_spin_lock+0x1b0/0x1b0 [ 25.831279][ T294] ? avc_xperms_populate+0x4c7/0x590 [ 25.836410][ T294] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 25.842043][ T294] ? avc_compute_av+0x4cc/0x690 [ 25.846836][ T294] ? avc_has_perm+0x275/0x400 [ 25.851350][ T294] ? avc_has_perm_noaudit+0x240/0x240 [ 25.856559][ T294] ? avc_has_perm_noaudit+0x158/0x240 [ 25.861769][ T294] ? security_transition_sid+0x7d/0x90 [ 25.867066][ T294] ? may_create+0x65a/0x900 [ 25.871404][ T294] ? show_sid+0x250/0x250 [ 25.875570][ T294] ? d_hash_and_lookup+0x1e0/0x1e0 [ 25.880515][ T294] ? from_kgid+0x1a3/0x730 [ 25.884781][ T294] ? selinux_inode_create+0x22/0x30 [ 25.889800][ T294] ? security_inode_create+0xbc/0x100 [ 25.895008][ T294] ? fuse_rename2+0x4aa0/0x4aa0 [ 25.899693][ T294] path_openat+0xff0/0x3000 [ 25.904034][ T294] ? update_load_avg+0x541/0x1690 [ 25.908898][ T294] ? do_filp_open+0x460/0x460 [ 25.913411][ T294] do_filp_open+0x21c/0x460 [ 25.917748][ T294] ? vfs_tmpfile+0x2b0/0x2b0 [ 25.922179][ T294] ? get_unused_fd_flags+0x94/0xa0 [ 25.927150][ T294] do_sys_openat2+0x13f/0x6f0 [ 25.931637][ T294] ? cgroup_leave_frozen+0x164/0x2c0 [ 25.936765][ T294] ? ptrace_stop+0x6dc/0xa30 [ 25.941202][ T294] ? do_sys_open+0x220/0x220 [ 25.945971][ T294] ? _raw_spin_unlock_irq+0x4e/0x70 [ 25.950994][ T294] ? ptrace_notify+0x24c/0x350 [ 25.955590][ T294] __x64_sys_openat+0x243/0x290 [ 25.960298][ T294] ? __ia32_sys_open+0x270/0x270 [ 25.965053][ T294] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 25.970870][ T294] do_syscall_64+0x34/0x70 [ 25.975123][ T294] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 25.980851][ T294] RIP: 0033:0x7efe10027549 [ 25.985102][ T294] 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 [ 26.004546][ T294] RSP: 002b:00007efe0ffc8218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 26.012789][ T294] RAX: ffffffffffffffda RBX: 00007efe100b43f8 RCX: 00007efe10027549 [pid 292] futex(0x7efe100b43e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 291] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 26.020604][ T294] RDX: 0000000000080041 RSI: 00000000200001c0 RDI: 00000000ffffff9c [ 26.028411][ T294] RBP: 00007efe100b43f0 R08: 0000000000000000 R09: 0000000000000000 [ 26.036221][ T294] R10: 0000000000000000 R11: 0000000000000246 R12: 00007efe10081024 [ 26.044034][ T294] R13: 000000000000006e R14: 0030656c69662f30 R15: 2f30656c69662f2e [ 26.051932][ T294] Modules linked in: [ 26.055935][ T294] ---[ end trace 5311a8bdb08fc1f5 ]--- [ 26.061279][ T294] RIP: 0010:fuse_atomic_open+0x27f/0x34e0 [ 26.066746][ T294] Code: e0 40 4c 8b 64 24 20 75 07 e8 1d b3 6c ff eb 37 48 8b 44 24 60 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 f3 2b aa ff 48 83 3b 00 0f 84 a9 00 [ 26.086464][ T294] RSP: 0018:ffffc90000b572e0 EFLAGS: 00010202 [ 26.092549][ T294] RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 [ 26.100368][ T294] RDX: ffff88811ef8cf00 RSI: 0000000000000040 RDI: 0000000000000000 [ 26.108137][ T294] RBP: ffffc90000b57910 R08: ffffffff81fdf4c2 R09: ffffed10239264ec [ 26.115944][ T294] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c932428 [pid 291] exit_group(0) = ? [pid 292] <... futex resumed>) = ? [pid 292] +++ exited with 0 +++ [ 26.123874][ T294] R13: ffff88811efaf000 R14: 1ffff9200016ae74 R15: 0000000000000008 [ 26.131670][ T294] FS: 00007efe0ffc86c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 26.140445][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.146844][ T294] CR2: 00005609d7ea2a88 CR3: 000000011ef63000 CR4: 00000000003506a0 [ 26.154689][ T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.162489][ T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.170301][ T294] Kernel panic - not syncing: Fatal exception [ 26.176455][ T294] Kernel Offset: disabled [ 26.180698][ T294] Rebooting in 86400 seconds..