./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor795728536 <...> Warning: Permanently added '10.128.1.57' (ED25519) to the list of known hosts. execve("./syz-executor795728536", ["./syz-executor795728536"], 0x7ffea0762c20 /* 10 vars */) = 0 brk(NULL) = 0x555555eba000 brk(0x555555ebad40) = 0x555555ebad40 arch_prctl(ARCH_SET_FS, 0x555555eba3c0) = 0 set_tid_address(0x555555eba690) = 293 set_robust_list(0x555555eba6a0, 24) = 0 rseq(0x555555ebace0, 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-executor795728536", 4096) = 27 getrandom("\xa5\x0d\x1d\xfe\x50\x8b\x6f\x19", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555ebad40 brk(0x555555edbd40) = 0x555555edbd40 brk(0x555555edc000) = 0x555555edc000 mprotect(0x7fa9903f7000, 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(0x7fa9903fd40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fa990397380, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fa990388a00}, 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) = 0x7fa990310000 mprotect(0x7fa990311000, 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=0x7fa990330990, parent_tid=0x7fa990330990, exit_signal=0, stack=0x7fa990310000, stack_size=0x20300, tls=0x7fa9903306c0} => {parent_tid=[294]}, 88) = 294 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fa9903fd408, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fa9903fd40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 294 attached [pid 294] set_robust_list(0x7fa9903309a0, 24) = 0 [pid 294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 294] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 294] futex(0x7fa9903fd40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7fa9903fd408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7fa9903fd40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] <... futex resumed>) = 1 [pid 294] mkdir("./file0", 0777) = 0 [pid 294] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 294] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 293] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 293] futex(0x7fa9903fd40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 293] futex(0x7fa9903fd40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 293] futex(0x7fa9903fd41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fa9902ef000 [pid 293] mprotect(0x7fa9902f0000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 293] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 293] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fa99030f990, parent_tid=0x7fa99030f990, exit_signal=0, stack=0x7fa9902ef000, stack_size=0x20300, tls=0x7fa99030f6c0} => {parent_tid=[296]}, 88) = 296 ./strace-static-x86_64: Process 296 attached [pid 293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 293] futex(0x7fa9903fd418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7fa9903fd41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] set_robust_list(0x7fa99030f9a0, 24) = 0 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] 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 296] futex(0x7fa9903fd41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7fa9903fd418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7fa9903fd41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] write(3, "\x18\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00", 24) = 24 [pid 296] futex(0x7fa9903fd41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7fa9903fd418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7fa9903fd41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] 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\x26\x01\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00\x00\x00", 8192) = 48 [pid 296] 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 294] <... openat resumed>) = 4 [pid 296] <... write resumed>) = 32 [pid 294] futex(0x7fa9903fd40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7fa9903fd408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 296] futex(0x7fa9903fd41c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 296] futex(0x7fa9903fd418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7fa9903fd408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 294] <... futex resumed>) = 0 [pid 293] futex(0x7fa9903fd40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 21.455717][ T30] audit: type=1400 audit(1708731683.433:66): avc: denied { execmem } for pid=293 comm="syz-executor795" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.459826][ T30] audit: type=1400 audit(1708731683.433:67): avc: denied { read write } for pid=293 comm="syz-executor795" 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 [ 21.463676][ T30] audit: type=1400 audit(1708731683.433:68): avc: denied { open } for pid=293 comm="syz-executor795" 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 [ 21.466871][ T30] audit: type=1400 audit(1708731683.433:69): avc: denied { mounton } for pid=293 comm="syz-executor795" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 21.470327][ T30] audit: type=1400 audit(1708731683.433:70): avc: denied { mount } for pid=293 comm="syz-executor795" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 294] read(3, [pid 293] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 293] futex(0x7fa9903fd40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 293] futex(0x7fa9903fd418, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 293] futex(0x7fa9903fd41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 0 [pid 296] mkdirat(4, "./file0", 0400 [pid 294] <... read resumed>"\x2e\x00\x00\x00\x01\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\x28\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 294] write(3, "\x90\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\xc7\x88\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x03\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\xff\xff\xff\x7f\x06\x00\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00"..., 144) = 144 [pid 294] futex(0x7fa9903fd40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 21.562941][ T296] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 21.574689][ T296] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 21.582897][ T296] CPU: 1 PID: 296 Comm: syz-executor795 Not tainted 5.15.148-syzkaller-00718-g993bed180178 #0 [ 21.592962][ T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 21.602857][ T296] RIP: 0010:filename_create+0x2d8/0x530 [ 21.608418][ T296] Code: 92 00 00 00 4c 89 7c 24 28 45 84 e4 0f 95 c0 83 7c 24 14 00 0f 94 c3 20 c3 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 1f 02 00 00 45 8b 26 41 bd 00 00 70 00 be [ 21.627948][ T296] RSP: 0018:ffffc900009f7d20 EFLAGS: 00010202 [ 21.633926][ T296] RAX: 0000000000000001 RBX: 1ffff9200013ef00 RCX: dffffc0000000000 [ 21.641754][ T296] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 21.649551][ T296] RBP: ffffc900009f7e10 R08: ffffffff81c04f00 R09: ffffed102389a53e [ 21.657362][ T296] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 21.665874][ T296] R13: 0000000000000600 R14: 0000000000000008 R15: ffffc900009f7e80 [ 21.673912][ T296] FS: 00007fa99030f6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 21.682677][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.689445][ T296] CR2: 0000000020002e80 CR3: 000000011ee66000 CR4: 00000000003506a0 [ 21.697608][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.705674][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.713496][ T296] Call Trace: [ 21.716803][ T296] [ 21.719590][ T296] ? __die_body+0x62/0xb0 [ 21.723732][ T296] ? die_addr+0x9f/0xd0 [ 21.727815][ T296] ? exc_general_protection+0x311/0x4b0 [ 21.733200][ T296] ? asm_exc_general_protection+0x27/0x30 [ 21.738767][ T296] ? dput+0x90/0x320 [ 21.742477][ T296] ? filename_create+0x2d8/0x530 [ 21.747338][ T296] ? kern_path_create+0x1a0/0x1a0 [ 21.752198][ T296] do_mkdirat+0xbd/0x450 [ 21.756280][ T296] ? vfs_mkdir+0x610/0x610 [ 21.760627][ T296] __x64_sys_mkdirat+0x89/0xa0 [ 21.765218][ T296] do_syscall_64+0x3d/0xb0 [ 21.769468][ T296] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.775215][ T296] RIP: 0033:0x7fa9903714a9 [ 21.779450][ T296] 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 [ 21.798899][ T296] RSP: 002b:00007fa99030f218 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [pid 294] futex(0x7fa9903fd408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 293] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 21.807222][ T296] RAX: ffffffffffffffda RBX: 00007fa9903fd418 RCX: 00007fa9903714a9 [ 21.815126][ T296] RDX: 0000000000000100 RSI: 0000000020000000 RDI: 0000000000000004 [ 21.822969][ T296] RBP: 00007fa9903fd410 R08: 0000000000000000 R09: 0000000000000000 [ 21.831279][ T296] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa9903ca0dc [ 21.839075][ T296] R13: 000000000000006e R14: 0030656c69662f2e R15: 7fffffffffffffff [ 21.846888][ T296] [ 21.849748][ T296] Modules linked in: [ 21.853764][ T296] ---[ end trace 82ad322080a93dc4 ]--- [ 21.859575][ T296] RIP: 0010:filename_create+0x2d8/0x530 [ 21.865082][ T296] Code: 92 00 00 00 4c 89 7c 24 28 45 84 e4 0f 95 c0 83 7c 24 14 00 0f 94 c3 20 c3 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 1f 02 00 00 45 8b 26 41 bd 00 00 70 00 be [ 21.884950][ T296] RSP: 0018:ffffc900009f7d20 EFLAGS: 00010202 [ 21.890950][ T296] RAX: 0000000000000001 RBX: 1ffff9200013ef00 RCX: dffffc0000000000 [ 21.898998][ T296] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 21.906782][ T296] RBP: ffffc900009f7e10 R08: ffffffff81c04f00 R09: ffffed102389a53e [ 21.915096][ T296] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 21.923032][ T296] R13: 0000000000000600 R14: 0000000000000008 R15: ffffc900009f7e80 [ 21.930982][ T296] FS: 00007fa99030f6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.940020][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.946412][ T296] CR2: 0000000020007000 CR3: 000000011ee66000 CR4: 00000000003506b0 [ 21.954499][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.962699][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.970763][ T296] Kernel panic - not syncing: Fatal exception [ 21.976983][ T296] Kernel Offset: disabled [ 21.981110][ T296] Rebooting in 86400 seconds..