./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor848892138 <...> Warning: Permanently added '10.128.0.12' (ED25519) to the list of known hosts. execve("./syz-executor848892138", ["./syz-executor848892138"], 0x7ffceddfe120 /* 10 vars */) = 0 brk(NULL) = 0x55556d50f000 brk(0x55556d50fd40) = 0x55556d50fd40 arch_prctl(ARCH_SET_FS, 0x55556d50f3c0) = 0 set_tid_address(0x55556d50f690) = 289 set_robust_list(0x55556d50f6a0, 24) = 0 rseq(0x55556d50fce0, 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-executor848892138", 4096) = 27 getrandom("\xf1\x64\xc3\xd5\xf5\xfa\x26\x7e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556d50fd40 brk(0x55556d530d40) = 0x55556d530d40 brk(0x55556d531000) = 0x55556d531000 mprotect(0x7f40a719a000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 write(1, "executing program\n", 18executing program ) = 18 futex(0x7f40a71a03ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f40a71393a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f40a712aa20}, 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) = 0x7f40a70b5000 mprotect(0x7f40a70b6000, 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=0x7f40a70d5990, parent_tid=0x7f40a70d5990, exit_signal=0, stack=0x7f40a70b5000, stack_size=0x20300, tls=0x7f40a70d56c0} => {parent_tid=[290]}, 88) = 290 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f40a71a03e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f40a71a03ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x7f40a70d59a0, 24) = 0 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] mkdir("./file0", 000) = 0 [pid 290] futex(0x7f40a71a03ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f40a71a03e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f40a71a03ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 290] futex(0x7f40a71a03ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f40a71a03e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f40a71a03ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 290] futex(0x7f40a71a03ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f40a71a03e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f40a71a03ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] 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\x26\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x73\x09\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 290] futex(0x7f40a71a03ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f40a71a03e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f40a71a03ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [ 25.264888][ T28] audit: type=1400 audit(1755060578.337:64): avc: denied { execmem } for pid=289 comm="syz-executor848" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.284952][ T28] audit: type=1400 audit(1755060578.347:65): avc: denied { read write } for pid=289 comm="syz-executor848" name="fuse" dev="devtmpfs" ino=93 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 290] read(3, [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7f40a71a03fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f40a7094000 [pid 289] mprotect(0x7f40a7095000, 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=0x7f40a70b4990, parent_tid=0x7f40a70b4990, exit_signal=0, stack=0x7f40a7094000, stack_size=0x20300, tls=0x7f40a70b46c0} => {parent_tid=[292]}, 88) = 292 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7f40a71a03f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f40a71a03fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 292 attached [pid 292] set_robust_list(0x7f40a70b49a0, 24) = 0 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x26\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 292] futex(0x7f40a71a03fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f40a71a03f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f40a71a03fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] <... futex resumed>) = 1 [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, "\x95\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfe\xff\xff\xff\xfc\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00"..., 149) = 149 [pid 290] futex(0x7f40a71a03ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 25.309097][ T28] audit: type=1400 audit(1755060578.347:66): avc: denied { open } for pid=289 comm="syz-executor848" path="/dev/fuse" dev="devtmpfs" ino=93 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 25.333212][ T28] audit: type=1400 audit(1755060578.347:67): avc: denied { mounton } for pid=289 comm="syz-executor848" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 25.336276][ T292] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 25.357302][ T28] audit: type=1400 audit(1755060578.357:68): avc: denied { mount } for pid=289 comm="syz-executor848" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 25.368859][ T292] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 25.368877][ T292] CPU: 1 PID: 292 Comm: syz-executor848 Not tainted 6.1.145-syzkaller-00002-gc750dc582629 #0 [ 25.368898][ T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 25.368908][ T292] RIP: 0010:fuse_atomic_open+0x174/0x3c0 [ 25.368951][ T292] Code: 8b 6d c4 44 89 ee 83 e6 40 31 ff e8 e6 5f 68 ff 44 89 e8 83 e0 40 75 07 e8 b9 5b 68 ff eb 26 4d 8d 6e 30 4c 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ef e8 ed be ac ff 49 83 7d 00 00 74 21 [ 25.368970][ T292] RSP: 0018:ffffc90000e57938 EFLAGS: 00010207 [ 25.368989][ T292] RAX: 0000000000000006 RBX: ffff888105e15000 RCX: 0000000000000000 [ 25.369001][ T292] RDX: ffff88810ee9a880 RSI: 0000000000000040 RDI: 0000000000000000 [ 25.369013][ T292] RBP: ffffc90000e57990 R08: ffff88810ee9a880 R09: 0000000000000002 [ 25.393352][ T28] audit: type=1400 audit(1755060578.467:69): avc: denied { read } for pid=84 comm="syslogd" name="log" dev="sda1" ino=2010 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 [ 25.399835][ T292] R10: 00000000fffffffe R11: 0000000000000000 R12: dffffc0000000000 [ 25.399853][ T292] R13: 0000000000000035 R14: 0000000000000005 R15: ffff8881188d9100 [ 25.399867][ T292] FS: 00007f40a70b46c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.399884][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.410164][ T28] audit: type=1400 audit(1755060578.467:70): avc: denied { search } for pid=84 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 25.420186][ T292] CR2: 00007f40a70b4d58 CR3: 000000010702e000 CR4: 00000000003506a0 [ 25.420207][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.420218][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.420232][ T292] Call Trace: [ 25.420238][ T292] [ 25.426399][ T28] audit: type=1400 audit(1755060578.467:71): avc: denied { write } for pid=84 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 25.445845][ T292] ? selinux_inode_create+0x22/0x30 [ 25.445873][ T292] ? __cfi_fuse_atomic_open+0x10/0x10 [ 25.452944][ T28] audit: type=1400 audit(1755060578.467:72): avc: denied { add_name } for pid=84 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 25.460330][ T292] path_openat+0xe44/0x2f50 [ 25.460365][ T292] ? do_filp_open+0x3c0/0x3c0 [ 25.468531][ T28] audit: type=1400 audit(1755060578.467:73): avc: denied { create } for pid=84 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 25.476438][ T292] do_filp_open+0x1c1/0x3c0 [ 25.476463][ T292] ? __cfi_do_filp_open+0x10/0x10 [ 25.674585][ T292] ? alloc_fd+0x4e6/0x590 [ 25.678936][ T292] do_sys_openat2+0x185/0x7e0 [ 25.683624][ T292] ? _raw_spin_unlock_irq+0x4d/0x70 [ 25.689559][ T292] ? ptrace_notify+0x1d1/0x250 [ 25.694352][ T292] ? do_sys_open+0xe0/0xe0 [ 25.698779][ T292] ? __cfi_ptrace_notify+0x10/0x10 [ 25.704081][ T292] ? xfd_validate_state+0x70/0x150 [ 25.709228][ T292] __x64_sys_creat+0x8e/0xb0 [ 25.713841][ T292] x64_sys_call+0x116/0x9a0 [ 25.718458][ T292] do_syscall_64+0x4c/0xa0 [ 25.723086][ T292] ? clear_bhb_loop+0x30/0x80 [ 25.727896][ T292] ? clear_bhb_loop+0x30/0x80 [ 25.732705][ T292] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 25.738743][ T292] RIP: 0033:0x7f40a71134f9 [ 25.743185][ 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 [ 25.763099][ T292] RSP: 002b:00007f40a70b4218 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 25.771569][ T292] RAX: ffffffffffffffda RBX: 00007f40a71a03f8 RCX: 00007f40a71134f9 [ 25.779559][ T292] RDX: 00007f40a71134f9 RSI: 0000000000000000 RDI: 0000200000000180 [ 25.787631][ T292] RBP: 00007f40a71a03f0 R08: 0000000000000000 R09: 0000000000000000 [ 25.795797][ T292] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f40a716d034 [ 25.803792][ T292] R13: 0000200000004380 R14: 0000200000000180 R15: 00007ffcc07e3e88 [ 25.812325][ T292] [pid 290] futex(0x7f40a71a03e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 25.815366][ T292] Modules linked in: [ 25.819624][ T292] ---[ end trace 0000000000000000 ]--- [ 25.825239][ T292] RIP: 0010:fuse_atomic_open+0x174/0x3c0 [ 25.831095][ T292] Code: 8b 6d c4 44 89 ee 83 e6 40 31 ff e8 e6 5f 68 ff 44 89 e8 83 e0 40 75 07 e8 b9 5b 68 ff eb 26 4d 8d 6e 30 4c 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ef e8 ed be ac ff 49 83 7d 00 00 74 21 [ 25.851031][ T292] RSP: 0018:ffffc90000e57938 EFLAGS: 00010207 [ 25.857155][ T292] RAX: 0000000000000006 RBX: ffff888105e15000 RCX: 0000000000000000 [ 25.865384][ T292] RDX: ffff88810ee9a880 RSI: 0000000000000040 RDI: 0000000000000000 [ 25.873597][ T292] RBP: ffffc90000e57990 R08: ffff88810ee9a880 R09: 0000000000000002 [ 25.881697][ T292] R10: 00000000fffffffe R11: 0000000000000000 R12: dffffc0000000000 [ 25.889991][ T292] R13: 0000000000000035 R14: 0000000000000005 R15: ffff8881188d9100 [ 25.898151][ T292] FS: 00007f40a70b46c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.907243][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.914241][ T292] CR2: 00007f40a70b4d58 CR3: 000000010702e000 CR4: 00000000003506a0 [ 25.922393][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.930621][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.938729][ T292] Kernel panic - not syncing: Fatal exception [ 25.945274][ T292] Kernel Offset: disabled [ 25.949615][ T292] Rebooting in 86400 seconds..