./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1427922675 <...> Warning: Permanently added '10.128.0.205' (ED25519) to the list of known hosts. execve("./syz-executor1427922675", ["./syz-executor1427922675"], 0x7ffe3d8e5b80 /* 10 vars */) = 0 brk(NULL) = 0x555555be2000 brk(0x555555be2d40) = 0x555555be2d40 arch_prctl(ARCH_SET_FS, 0x555555be23c0) = 0 set_tid_address(0x555555be2690) = 289 set_robust_list(0x555555be26a0, 24) = 0 rseq(0x555555be2ce0, 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-executor1427922675", 4096) = 28 getrandom("\xcb\xfd\x86\xcf\xf7\x7f\x14\x77", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555be2d40 brk(0x555555c03d40) = 0x555555c03d40 brk(0x555555c04000) = 0x555555c04000 mprotect(0x7fb29535b000, 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(0x7fb2953613ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fb2952fa360, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fb2952eb9e0}, 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) = 0x7fb295276000 mprotect(0x7fb295277000, 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=0x7fb295296990, parent_tid=0x7fb295296990, exit_signal=0, stack=0x7fb295276000, stack_size=0x20300, tls=0x7fb2952966c0}./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x7fb2952969a0, 24) = 0 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] futex(0x7fb2953613e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... clone3 resumed> => {parent_tid=[290]}, 88) = 290 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7fb2953613e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 290] <... futex resumed>) = 0 [pid 290] mkdirat(AT_FDCWD, "./file0", 000 [pid 289] futex(0x7fb2953613ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... mkdirat resumed>) = 0 [pid 290] futex(0x7fb2953613ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 290] futex(0x7fb2953613e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7fb2953613e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 290] <... futex resumed>) = 0 [pid 290] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000 [pid 289] futex(0x7fb2953613ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... openat resumed>) = 3 [pid 290] futex(0x7fb2953613ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 290] futex(0x7fb2953613e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7fb2953613e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 290] <... futex resumed>) = 0 [pid 289] futex(0x7fb2953613ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 290] futex(0x7fb2953613ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7fb2953613e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7fb2953613ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] 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 290] futex(0x7fb2953613ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7fb2953613e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7fb2953613ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x21\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", 80) = 80 [pid 290] futex(0x7fb2953613ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7fb2953613e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7fb2953613ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] read(3, [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7fb2953613ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7fb2953613fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fb295255000 [pid 289] mprotect(0x7fb295256000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 289] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 289] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fb295275990, parent_tid=0x7fb295275990, exit_signal=0, stack=0x7fb295255000, stack_size=0x20300, tls=0x7fb2952756c0}./strace-static-x86_64: Process 292 attached => {parent_tid=[292]}, 88) = 292 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7fb2953613f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7fb2953613fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] set_robust_list(0x7fb2952759a0, 24) = 0 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] creat("./file0/file0", 000 [pid 290] <... 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\x24\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 290] write(3, "\x99\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\x04\x00\x00\x00\x00\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\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 153) = 153 [pid 290] futex(0x7fb2953613ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 22.234359][ T24] audit: type=1400 audit(1689550011.580:66): avc: denied { execmem } for pid=289 comm="syz-executor142" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.243284][ T24] audit: type=1400 audit(1689550011.590:67): avc: denied { read write } for pid=289 comm="syz-executor142" 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 [ 22.246500][ T24] audit: type=1400 audit(1689550011.590:68): avc: denied { open } for pid=289 comm="syz-executor142" 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 [ 22.251191][ T24] audit: type=1400 audit(1689550011.610:69): avc: denied { mounton } for pid=289 comm="syz-executor142" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.254511][ T24] audit: type=1400 audit(1689550011.610:70): avc: denied { mount } for pid=289 comm="syz-executor142" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 22.312614][ T292] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 22.324149][ T292] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 22.332390][ T292] CPU: 1 PID: 292 Comm: syz-executor142 Not tainted 5.10.186-syzkaller #0 [ 22.340710][ T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 [ 22.350623][ T292] RIP: 0010:fuse_atomic_open+0x27c/0x31a0 [ 22.356167][ T292] Code: e0 40 4c 8b 64 24 28 75 07 e8 c0 5d 6d 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 86 7e aa ff 48 83 3b 00 0f 84 a6 00 [ 22.375611][ T292] RSP: 0018:ffffc90000b77300 EFLAGS: 00010202 [ 22.381504][ T292] RAX: 0000000000000007 RBX: 0000000000000039 RCX: dffffc0000000000 [ 22.389316][ T292] RDX: ffff88811dee13c0 RSI: 0000000000000040 RDI: 0000000000000000 [ 22.397128][ T292] RBP: ffffc90000b77930 R08: ffffffff81fd2a0f R09: ffffed10238987bc [ 22.404939][ T292] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c4c3aa8 [ 22.412754][ T292] R13: ffff88811e10c800 R14: 1ffff9200016ee78 R15: 0000000000000009 [ 22.420565][ T292] FS: 00007fb2952756c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.429328][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.435751][ T292] CR2: 0000000020000000 CR3: 000000011e08c000 CR4: 00000000003506a0 [ 22.443567][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.451372][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.459198][ T292] Call Trace: [ 22.462315][ T292] ? __die_body+0x62/0xb0 [ 22.466477][ T292] ? die_addr+0x9f/0xd0 [ 22.470470][ T292] ? exc_general_protection+0x3ff/0x490 [ 22.475851][ T292] ? asm_exc_general_protection+0x1e/0x30 [ 22.481403][ T292] ? fuse_atomic_open+0x24f/0x31a0 [ 22.486351][ T292] ? fuse_atomic_open+0x27c/0x31a0 [ 22.491299][ T292] ? fuse_rename2+0x4420/0x4420 [ 22.495988][ T292] ? avc_alloc_node+0x7e/0x360 [ 22.500594][ T292] ? __kasan_check_write+0x14/0x20 [ 22.505533][ T292] ? _raw_spin_lock_irqsave+0xf9/0x210 [ 22.510826][ T292] ? _raw_spin_lock+0x1b0/0x1b0 [ 22.515513][ T292] ? avc_xperms_populate+0x4c7/0x590 [ 22.520634][ T292] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 22.526276][ T292] ? avc_compute_av+0x4cc/0x690 [ 22.530961][ T292] ? avc_has_perm+0x275/0x400 [ 22.535474][ T292] ? avc_has_perm_noaudit+0x240/0x240 [ 22.540684][ T292] ? avc_has_perm_noaudit+0x158/0x240 [ 22.545891][ T292] ? security_transition_sid+0x7d/0x90 [ 22.551185][ T292] ? may_create+0x65a/0x900 [ 22.555523][ T292] ? show_sid+0x250/0x250 [ 22.559723][ T292] ? d_hash_and_lookup+0x1e0/0x1e0 [ 22.564638][ T292] ? from_kgid+0x1a3/0x730 [ 22.568890][ T292] ? selinux_inode_create+0x22/0x30 [ 22.573925][ T292] ? security_inode_create+0xbc/0x100 [ 22.579134][ T292] ? fuse_rename2+0x4420/0x4420 [ 22.583819][ T292] path_openat+0xff0/0x3000 [ 22.588159][ T292] ? do_filp_open+0x460/0x460 [ 22.592677][ T292] do_filp_open+0x21c/0x460 [ 22.597011][ T292] ? vfs_tmpfile+0x2b0/0x2b0 [ 22.601439][ T292] ? get_unused_fd_flags+0x94/0xa0 [ 22.606387][ T292] do_sys_openat2+0x13f/0x6f0 [ 22.610897][ T292] ? ptrace_stop+0x6dc/0xa30 [ 22.615322][ T292] ? do_sys_open+0x220/0x220 [ 22.619838][ T292] ? ptrace_notify+0x24c/0x350 [ 22.624436][ T292] ? do_notify_parent+0xa10/0xa10 [ 22.629298][ T292] __x64_sys_creat+0x11f/0x160 [ 22.633896][ T292] ? __x32_compat_sys_openat+0x290/0x290 [ 22.639370][ T292] ? irqentry_exit_to_user_mode+0x2f/0x80 [ 22.644920][ T292] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 22.650734][ T292] do_syscall_64+0x34/0x70 [ 22.654987][ T292] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 22.660714][ T292] RIP: 0033:0x7fb2952d44b9 [ 22.664968][ T292] 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 [ 22.684524][ T292] RSP: 002b:00007fb295275218 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 22.692766][ T292] RAX: ffffffffffffffda RBX: 00007fb2953613f8 RCX: 00007fb2952d44b9 [ 22.700567][ T292] RDX: 00007fb2952b1c46 RSI: 0000000000000000 RDI: 0000000020000000 [pid 290] futex(0x7fb2953613e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 22.708379][ T292] RBP: 00007fb2953613f0 R08: 00007fff21287327 R09: 0000000000000000 [ 22.716189][ T292] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb29532e024 [ 22.723999][ T292] R13: 000000000000006e R14: 0030656c69662f30 R15: 2f30656c69662f2e [ 22.731815][ T292] Modules linked in: [ 22.735710][ T292] ---[ end trace 88cdf4a084fb2158 ]--- [ 22.741080][ T292] RIP: 0010:fuse_atomic_open+0x27c/0x31a0 [ 22.746530][ T292] Code: e0 40 4c 8b 64 24 28 75 07 e8 c0 5d 6d 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 86 7e aa ff 48 83 3b 00 0f 84 a6 00 [ 22.766040][ T292] RSP: 0018:ffffc90000b77300 EFLAGS: 00010202 [ 22.771887][ T292] RAX: 0000000000000007 RBX: 0000000000000039 RCX: dffffc0000000000 [ 22.779705][ T292] RDX: ffff88811dee13c0 RSI: 0000000000000040 RDI: 0000000000000000 [ 22.787496][ T292] RBP: ffffc90000b77930 R08: ffffffff81fd2a0f R09: ffffed10238987bc [ 22.795339][ T292] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c4c3aa8 [ 22.803130][ T292] R13: ffff88811e10c800 R14: 1ffff9200016ee78 R15: 0000000000000009 [pid 289] exit_group(0) = ? [pid 290] <... futex resumed>) = ? [pid 290] +++ exited with 0 +++ [ 22.810956][ T292] FS: 00007fb2952756c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.819806][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.826116][ T292] CR2: 0000000020005000 CR3: 000000011e08c000 CR4: 00000000003506b0 [ 22.833982][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.841755][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.849582][ T292] Kernel panic - not syncing: Fatal exception [ 22.855621][ T292] Kernel Offset: disabled [ 22.859744][ T292] Rebooting in 86400 seconds..