./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3825794936 <...> Warning: Permanently added '10.128.0.189' (ED25519) to the list of known hosts. execve("./syz-executor3825794936", ["./syz-executor3825794936"], 0x7ffe78c2df50 /* 10 vars */) = 0 brk(NULL) = 0x5555942c1000 brk(0x5555942c1e00) = 0x5555942c1e00 arch_prctl(ARCH_SET_FS, 0x5555942c1480) = 0 set_tid_address(0x5555942c1750) = 290 set_robust_list(0x5555942c1760, 24) = 0 rseq(0x5555942c1da0, 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-executor3825794936", 4096) = 28 getrandom("\x31\x1f\xbd\xa5\x3d\x19\xc4\x68", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555942c1e00 brk(0x5555942e2e00) = 0x5555942e2e00 brk(0x5555942e3000) = 0x5555942e3000 mprotect(0x7ff825901000, 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, 0executing program ) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7ff825846b50, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7ff82584f170}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7ff825846b50, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7ff82584f170}, NULL, 8) = 0 write(1, "executing program\n", 18) = 18 futex(0x7ff8259073ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7ff8258a41e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff82584f170}, 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) = 0x7ff82581c000 mprotect(0x7ff82581d000, 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=0x7ff82583c990, parent_tid=0x7ff82583c990, exit_signal=0, stack=0x7ff82581c000, stack_size=0x20240, tls=0x7ff82583c6c0} => {parent_tid=[291]}, 88) = 291 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7ff8259073e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7ff8259073ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 291 attached [pid 291] set_robust_list(0x7ff82583c9a0, 24) = 0 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] mkdir("./file0", 0777) = 0 [pid 291] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 291] futex(0x7ff8259073ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 290] futex(0x7ff8259073e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8259073ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 291] futex(0x7ff8259073ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 290] futex(0x7ff8259073e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8259073ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 291] futex(0x7ff8259073ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 290] futex(0x7ff8259073e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8259073ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] 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 291] futex(0x7ff8259073ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 290] futex(0x7ff8259073e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8259073ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [ 28.289751][ T28] audit: type=1400 audit(1747041266.800:64): avc: denied { execmem } for pid=290 comm="syz-executor382" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 28.311506][ T28] audit: type=1400 audit(1747041266.800:65): avc: denied { read write } for pid=290 comm="syz-executor382" 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 291] read(3, [pid 290] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 290] futex(0x7ff8259073ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 290] futex(0x7ff8259073fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff8257fb000 [pid 290] mprotect(0x7ff8257fc000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 290] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 290] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff82581b990, parent_tid=0x7ff82581b990, exit_signal=0, stack=0x7ff8257fb000, stack_size=0x20240, tls=0x7ff82581b6c0} => {parent_tid=[293]}, 88) = 293 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] futex(0x7ff8259073f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8259073fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 293 attached [pid 293] set_robust_list(0x7ff82581b9a0, 24) = 0 [pid 293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 293] 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 293] futex(0x7ff8259073fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 290] futex(0x7ff8259073f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8259073fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [pid 293] creat("./file0/file0", 000 [pid 291] <... 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\x25\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 291] 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 291] futex(0x7ff8259073ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 28.337135][ T28] audit: type=1400 audit(1747041266.800:66): avc: denied { open } for pid=290 comm="syz-executor382" 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 [ 28.355290][ T293] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 28.362955][ T28] audit: type=1400 audit(1747041266.800:67): avc: denied { mounton } for pid=290 comm="syz-executor382" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 28.374483][ T293] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 28.374505][ T293] CPU: 0 PID: 293 Comm: syz-executor382 Not tainted 6.1.134-syzkaller-00012-g646380b087a5 #0 [ 28.374525][ T293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 28.374536][ T293] RIP: 0010:fuse_atomic_open+0x174/0x3c0 [ 28.399627][ T28] audit: type=1400 audit(1747041266.800:68): avc: denied { mount } for pid=290 comm="syz-executor382" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 28.408183][ T293] Code: 8b 6d c4 44 89 ee 83 e6 40 31 ff e8 26 91 68 ff 44 89 e8 83 e0 40 75 07 e8 f9 8c 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 1d df ac ff 49 83 7d 00 00 74 21 [ 28.408208][ T293] RSP: 0018:ffffc90000e97938 EFLAGS: 00010202 [ 28.408226][ T293] RAX: 0000000000000007 RBX: ffff88810e35a000 RCX: 0000000000000000 [ 28.408239][ T293] RDX: ffff88810f2a3cc0 RSI: 0000000000000040 RDI: 0000000000000000 [ 28.408252][ T293] RBP: ffffc90000e97990 R08: ffff88810f2a3cc0 R09: 0000000000000002 [ 28.420409][ T28] audit: type=1400 audit(1747041266.930:69): avc: denied { read } for pid=85 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 [ 28.429313][ T293] R10: 00000000fffffffe R11: 0000000000000000 R12: dffffc0000000000 [ 28.435332][ T28] audit: type=1400 audit(1747041266.930:70): avc: denied { search } for pid=85 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 [ 28.458743][ T293] R13: 0000000000000038 R14: 0000000000000008 R15: ffff888111d09100 [ 28.458768][ T293] FS: 00007ff82581b6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 28.458783][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.458796][ T293] CR2: 00007ff82581bd58 CR3: 0000000124cc1000 CR4: 00000000003506b0 [ 28.458812][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.458823][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.621498][ T293] Call Trace: [ 28.624886][ T293] [ 28.628014][ T293] ? selinux_inode_create+0x22/0x30 [ 28.633653][ T293] ? __cfi_fuse_atomic_open+0x10/0x10 [ 28.640005][ T293] path_openat+0xe44/0x2f50 [ 28.645496][ T293] ? do_filp_open+0x3c0/0x3c0 [ 28.650631][ T293] do_filp_open+0x1c1/0x3c0 [ 28.656315][ T293] ? __cfi_do_filp_open+0x10/0x10 [ 28.661992][ T293] ? alloc_fd+0x4e6/0x590 [ 28.666816][ T293] do_sys_openat2+0x185/0x7e0 [ 28.671934][ T293] ? _raw_spin_unlock_irq+0x4d/0x70 [ 28.677455][ T293] ? ptrace_notify+0x1d1/0x250 [ 28.682624][ T293] ? do_sys_open+0xe0/0xe0 [ 28.687555][ T293] ? __cfi_ptrace_notify+0x10/0x10 [ 28.693481][ T293] ? xfd_validate_state+0x70/0x150 [ 28.699087][ T293] __x64_sys_creat+0x8e/0xb0 [ 28.703798][ T293] x64_sys_call+0x116/0x9a0 [ 28.708406][ T293] do_syscall_64+0x4c/0xa0 [ 28.713196][ T293] ? clear_bhb_loop+0x15/0x70 [ 28.717955][ T293] ? clear_bhb_loop+0x15/0x70 [ 28.723304][ T293] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.729499][ T293] RIP: 0033:0x7ff82587e5a9 [ 28.734122][ T293] 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 [ 28.754974][ T293] RSP: 002b:00007ff82581b158 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 28.764275][ T293] RAX: ffffffffffffffda RBX: 0030656c69662f30 RCX: 00007ff82587e5a9 [ 28.772942][ T293] RDX: 00007ff82587e5a9 RSI: 0000000000000000 RDI: 0000200000000080 [ 28.782512][ T293] RBP: 00007ff8259073f0 R08: 00007ff82581b6c0 R09: 00007ff8259073f8 [pid 291] futex(0x7ff8259073e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 290] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 28.791407][ T293] R10: 00007ff8259073f8 R11: 0000000000000246 R12: 00007ff8259073fc [ 28.800810][ T293] R13: 000000000000006e R14: 00007fff1df7bba0 R15: 00007fff1df7bc88 [ 28.810018][ T293] [ 28.813507][ T293] Modules linked in: [ 28.818719][ T293] ---[ end trace 0000000000000000 ]--- [ 28.825089][ T28] audit: type=1400 audit(1747041266.930:71): avc: denied { write } for pid=85 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 [ 28.825298][ T293] RIP: 0010:fuse_atomic_open+0x174/0x3c0 [ 28.848571][ T28] audit: type=1400 audit(1747041266.930:72): avc: denied { add_name } for pid=85 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 28.854874][ T293] Code: 8b 6d c4 44 89 ee 83 e6 40 31 ff e8 26 91 68 ff 44 89 e8 83 e0 40 75 07 e8 f9 8c 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 1d df ac ff 49 83 7d 00 00 74 21 [ 28.876880][ T28] audit: type=1400 audit(1747041266.930:73): avc: denied { create } for pid=85 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 28.897784][ T293] RSP: 0018:ffffc90000e97938 EFLAGS: 00010202 [ 28.925741][ T293] RAX: 0000000000000007 RBX: ffff88810e35a000 RCX: 0000000000000000 [ 28.933793][ T293] RDX: ffff88810f2a3cc0 RSI: 0000000000000040 RDI: 0000000000000000 [ 28.942348][ T293] RBP: ffffc90000e97990 R08: ffff88810f2a3cc0 R09: 0000000000000002 [ 28.951413][ T293] R10: 00000000fffffffe R11: 0000000000000000 R12: dffffc0000000000 [ 28.959784][ T293] R13: 0000000000000038 R14: 0000000000000008 R15: ffff888111d09100 [ 28.968641][ T293] FS: 00007ff82581b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 28.977707][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.984894][ T293] CR2: 00007ff82585d580 CR3: 0000000124cc1000 CR4: 00000000003506a0 [ 28.993718][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.002056][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.010684][ T293] Kernel panic - not syncing: Fatal exception [ 29.017193][ T293] Kernel Offset: disabled [ 29.021524][ T293] Rebooting in 86400 seconds..