./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1906436252 <...> Warning: Permanently added '10.128.0.150' (ED25519) to the list of known hosts. execve("./syz-executor1906436252", ["./syz-executor1906436252"], 0x7fff33975ed0 /* 10 vars */) = 0 brk(NULL) = 0x555556cfe000 brk(0x555556cfed40) = 0x555556cfed40 arch_prctl(ARCH_SET_FS, 0x555556cfe3c0) = 0 set_tid_address(0x555556cfe690) = 292 set_robust_list(0x555556cfe6a0, 24) = 0 rseq(0x555556cfece0, 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-executor1906436252", 4096) = 28 getrandom("\x9a\xfd\x18\x6d\xae\xfd\x18\xe8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556cfed40 brk(0x555556d1fd40) = 0x555556d1fd40 brk(0x555556d20000) = 0x555556d20000 mprotect(0x7f62237bd000, 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 write(1, "executing program\n", 18executing program ) = 18 futex(0x7f62237c33cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f6223759670, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f622374acf0}, 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) = 0x7f62236d2000 mprotect(0x7f62236d3000, 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=0x7f62236f2990, parent_tid=0x7f62236f2990, exit_signal=0, stack=0x7f62236d2000, stack_size=0x20300, tls=0x7f62236f26c0} => {parent_tid=[293]}, 88) = 293 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f62237c33c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f62237c33cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 293 attached [pid 293] set_robust_list(0x7f62236f29a0, 24) = 0 [pid 293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 293] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 293] futex(0x7f62237c33cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f62237c33c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f62237c33cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [pid 293] mkdir("./file0", 0777) = 0 [pid 293] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [ 30.608267][ T24] audit: type=1400 audit(1717441409.760:66): avc: denied { execmem } for pid=292 comm="syz-executor190" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 30.630267][ T24] audit: type=1400 audit(1717441409.790:67): avc: denied { read write } for pid=292 comm="syz-executor190" 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 [pid 293] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f62237c33dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f62236b1000 [pid 292] mprotect(0x7f62236b2000, 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=0x7f62236d1990, parent_tid=0x7f62236d1990, exit_signal=0, stack=0x7f62236b1000, stack_size=0x20300, tls=0x7f62236d16c0} => {parent_tid=[295]}, 88) = 295 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] futex(0x7f62237c33d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f62237c33dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x7f62236d19a0, 24) = 0 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] 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", 8192) = 56 [pid 295] write(3, "\x14\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00", 20) = 20 [pid 295] futex(0x7f62237c33dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f62237c33d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f62237c33dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] read(3, "\x30\x00\x00\x00\x1b\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\x25\x01\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00\x00\x00", 8192) = 48 [pid 295] write(3, "\x20\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", 32 [pid 293] <... openat resumed>) = 4 [pid 293] chdir("./file0" [pid 295] <... write resumed>) = 32 [pid 295] futex(0x7f62237c33dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f62237c33d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 30.654021][ T24] audit: type=1400 audit(1717441409.790:68): avc: denied { open } for pid=292 comm="syz-executor190" 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 [ 30.677331][ T24] audit: type=1400 audit(1717441409.790:69): avc: denied { mounton } for pid=292 comm="syz-executor190" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 292] futex(0x7f62237c33dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] read(3, "\x30\x00\x00\x00\x22\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x25\x01\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00", 8192) = 48 [pid 295] write(3, "\x10\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00", 16 [pid 293] <... chdir resumed>) = 0 [pid 293] futex(0x7f62237c33cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f62237c33c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 295] <... write resumed>) = 16 [pid 295] futex(0x7f62237c33dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f62237c33c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 293] <... futex resumed>) = 0 [pid 292] futex(0x7f62237c33cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] read(3, [pid 295] <... futex resumed>) = 1 [pid 295] futex(0x7f62237c33d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f62237c33d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 295] <... futex resumed>) = 0 [pid 292] futex(0x7f62237c33dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] open("./file0/../file0", O_ACCMODE|O_CREAT|O_DIRECT|O_LARGEFILE|O_NOATIME|0x3c, 002 [pid 293] <... read resumed>"\x2e\x00\x00\x00\x01\x00\x00\x00\x08\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 [pid 293] write(3, "\x90\x00\x00\x00\x00\x00\x00\x00\x08\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(0x7f62237c33cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 30.700142][ T24] audit: type=1400 audit(1717441409.790:70): avc: denied { mount } for pid=292 comm="syz-executor190" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 30.766108][ T295] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 30.777670][ T295] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 30.785923][ T295] CPU: 1 PID: 295 Comm: syz-executor190 Not tainted 5.10.214-syzkaller-00114-gd3c4d815bf09 #0 [ 30.795982][ T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 30.805910][ T295] RIP: 0010:step_into+0x1b9/0xec0 [ 30.810739][ T295] Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 c6 97 f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07 [ 30.830278][ T295] RSP: 0018:ffffc90000b275c0 EFLAGS: 00010202 [ 30.836292][ T295] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88811f1913c0 [ 30.844109][ T295] RDX: ffffc90000b27bd8 RSI: 0000000000000000 RDI: 0000000000000000 [ 30.851952][ T295] RBP: ffffc90000b276f0 R08: ffffffff81b4a4ff R09: ffffed102399e765 [ 30.859726][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000164ecf [ 30.867538][ T295] R13: dffffc0000000000 R14: ffffc90000b27ba0 R15: 0000000000000011 [ 30.875361][ T295] FS: 00007f62236d16c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 30.884128][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.890560][ T295] CR2: 000000002000b000 CR3: 0000000118682000 CR4: 00000000003506a0 [ 30.898369][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.906321][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.914120][ T295] Call Trace: [ 30.917265][ T295] ? __die_body+0x62/0xb0 [ 30.921427][ T295] ? die_addr+0x9f/0xd0 [ 30.925428][ T295] ? exc_general_protection+0x3ff/0x490 [ 30.930830][ T295] ? asm_exc_general_protection+0x1e/0x30 [ 30.936450][ T295] ? step_into+0x15f/0xec0 [ 30.940704][ T295] ? step_into+0x1b9/0xec0 [ 30.944963][ T295] ? set_root+0x3d0/0x3d0 [ 30.949118][ T295] ? __kasan_check_write+0x14/0x20 [ 30.954062][ T295] ? up_read+0x14/0x90 [ 30.957971][ T295] walk_component+0x359/0x610 [ 30.962484][ T295] ? nd_alloc_stack+0xf0/0xf0 [ 30.967010][ T295] ? security_inode_permission+0xb0/0xf0 [ 30.972477][ T295] ? inode_permission+0xf1/0x500 [ 30.977238][ T295] ? fuse_do_getattr+0x7a0/0x7a0 [ 30.982025][ T295] link_path_walk+0x5c7/0xbd0 [ 30.986538][ T295] ? handle_lookup_down+0x130/0x130 [ 30.991567][ T295] path_openat+0x26a/0x3000 [ 30.995909][ T295] ? __stack_depot_save+0x468/0x4d0 [ 31.001040][ T295] ? kmem_cache_alloc+0x168/0x2e0 [ 31.005887][ T295] ? __x64_sys_open+0x221/0x270 [ 31.010571][ T295] ? do_syscall_64+0x34/0x70 [ 31.015016][ T295] ? entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 31.020913][ T295] ? do_filp_open+0x460/0x460 [ 31.025429][ T295] do_filp_open+0x21c/0x460 [ 31.029759][ T295] ? vfs_tmpfile+0x2b0/0x2b0 [ 31.034194][ T295] ? get_unused_fd_flags+0x94/0xa0 [ 31.039132][ T295] do_sys_openat2+0x13f/0x6f0 [ 31.043645][ T295] ? cgroup_leave_frozen+0x164/0x2c0 [ 31.048762][ T295] ? ptrace_stop+0x6dc/0xa30 [ 31.053191][ T295] ? do_sys_open+0x220/0x220 [ 31.057624][ T295] ? _raw_spin_unlock_irq+0x4e/0x70 [ 31.062662][ T295] ? ptrace_notify+0x24c/0x350 [ 31.067256][ T295] __x64_sys_open+0x221/0x270 [ 31.071790][ T295] ? do_sys_openat2+0x6f0/0x6f0 [ 31.076460][ T295] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 31.082277][ T295] do_syscall_64+0x34/0x70 [ 31.086526][ T295] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 31.092252][ T295] RIP: 0033:0x7f6223733799 [ 31.096503][ T295] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 [pid 293] futex(0x7f62237c33c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 31.115943][ T295] RSP: 002b:00007f62236d1218 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 31.124196][ T295] RAX: ffffffffffffffda RBX: 00007f62237c33d8 RCX: 00007f6223733799 [ 31.131998][ T295] RDX: 0000000000000002 RSI: 000000000004c07f RDI: 0000000020000300 [ 31.139805][ T295] RBP: 00007f62237c33d0 R08: 0000000000000000 R09: 0000000000000000 [ 31.147629][ T295] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f62237900fc [ 31.155434][ T295] R13: 000000000000006e R14: 00007f622378c0f0 R15: 00007f622378e0f8 [ 31.163235][ T295] Modules linked in: [ 31.169626][ T295] ---[ end trace a0a78753631c5c2b ]--- [ 31.176008][ T295] RIP: 0010:step_into+0x1b9/0xec0 [ 31.180988][ T295] Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 c6 97 f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07 [ 31.200492][ T295] RSP: 0018:ffffc90000b275c0 EFLAGS: 00010202 [ 31.206398][ T295] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88811f1913c0 [ 31.214421][ T295] RDX: ffffc90000b27bd8 RSI: 0000000000000000 RDI: 0000000000000000 [ 31.222479][ T295] RBP: ffffc90000b276f0 R08: ffffffff81b4a4ff R09: ffffed102399e765 [ 31.230357][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000164ecf [ 31.238214][ T295] R13: dffffc0000000000 R14: ffffc90000b27ba0 R15: 0000000000000011 [ 31.246085][ T295] FS: 00007f62236d16c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 31.254920][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.261376][ T295] CR2: 00005598655a1008 CR3: 0000000118682000 CR4: 00000000003506b0 [ 31.269247][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.277231][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.285061][ T295] Kernel panic - not syncing: Fatal exception [ 31.291179][ T295] Kernel Offset: disabled [ 31.295344][ T295] Rebooting in 86400 seconds..