./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3097470832 <...> Warning: Permanently added '10.128.0.236' (ED25519) to the list of known hosts. execve("./syz-executor3097470832", ["./syz-executor3097470832"], 0x7fff9f1afef0 /* 10 vars */) = 0 brk(NULL) = 0x555589e55000 brk(0x555589e55d40) = 0x555589e55d40 arch_prctl(ARCH_SET_FS, 0x555589e553c0) = 0 set_tid_address(0x555589e55690) = 288 set_robust_list(0x555589e556a0, 24) = 0 rseq(0x555589e55ce0, 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-executor3097470832", 4096) = 28 getrandom("\x4c\x43\xc3\xc9\xf8\x80\xb8\x01", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555589e55d40 brk(0x555589e76d40) = 0x555589e76d40 brk(0x555589e77000) = 0x555589e77000 mprotect(0x7fb6a3eff000, 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 executing program write(1, "executing program\n", 18) = 18 futex(0x7fb6a3f053ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fb6a3e9e620, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fb6a3e8fca0}, 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) = 0x7fb6a3e1a000 mprotect(0x7fb6a3e1b000, 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=0x7fb6a3e3a990, parent_tid=0x7fb6a3e3a990, exit_signal=0, stack=0x7fb6a3e1a000, stack_size=0x20300, tls=0x7fb6a3e3a6c0}./strace-static-x86_64: Process 289 attached => {parent_tid=[289]}, 88) = 289 [pid 289] set_robust_list(0x7fb6a3e3a9a0, 24) = 0 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7fb6a3f053e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] futex(0x7fb6a3f053e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 288] futex(0x7fb6a3f053ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 0 [pid 289] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 289] futex(0x7fb6a3f053ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fb6a3f053e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fb6a3f053ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 289] futex(0x7fb6a3f053ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fb6a3f053e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fb6a3f053ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 289] futex(0x7fb6a3f053ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fb6a3f053e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fb6a3f053ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] 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 289] futex(0x7fb6a3f053ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fb6a3f053e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fb6a3f053ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [ 25.585882][ T30] audit: type=1400 audit(1753224211.808:64): avc: denied { execmem } for pid=288 comm="syz-executor309" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.608994][ T30] audit: type=1400 audit(1753224211.838:65): avc: denied { read write } for pid=288 comm="syz-executor309" 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 [pid 289] read(3, [pid 288] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 288] futex(0x7fb6a3f053fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fb6a3df9000 [pid 288] mprotect(0x7fb6a3dfa000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 288] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 288] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fb6a3e19990, parent_tid=0x7fb6a3e19990, exit_signal=0, stack=0x7fb6a3df9000, stack_size=0x20300, tls=0x7fb6a3e196c0} => {parent_tid=[291]}, 88) = 291 [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] futex(0x7fb6a3f053f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fb6a3f053fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 291 attached [pid 291] set_robust_list(0x7fb6a3e199a0, 24) = 0 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x2b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 291] futex(0x7fb6a3f053fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fb6a3f053f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fb6a3f053fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] futex(0x7fb6a3f053fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fb6a3f053f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fb6a3f053fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] futex(0x7fb6a3f053fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fb6a3f053f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fb6a3f053fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] open("./file0/file0", O_RDWR [pid 289] <... 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\x23\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 289] write(3, "\xa7\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 167) = 167 [pid 289] futex(0x7fb6a3f053ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 25.632650][ T30] audit: type=1400 audit(1753224211.838:66): avc: denied { open } for pid=288 comm="syz-executor309" 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 [ 25.656095][ T30] audit: type=1400 audit(1753224211.838:67): avc: denied { mounton } for pid=288 comm="syz-executor309" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 25.667680][ T291] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 25.679547][ T30] audit: type=1400 audit(1753224211.838:68): avc: denied { mount } for pid=288 comm="syz-executor309" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 25.690597][ T291] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 25.690613][ T291] CPU: 0 PID: 291 Comm: syz-executor309 Not tainted 5.15.189-syzkaller-00079-ga71626bd56a5 #0 [ 25.690633][ T291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 25.690644][ T291] RIP: 0010:path_openat+0x11ff/0x2f10 [ 25.714164][ T30] audit: type=1400 audit(1753224211.938:69): avc: denied { read } for pid=83 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 [ 25.721091][ T291] Code: 48 89 df e8 03 81 02 00 49 63 de 48 81 fb 00 f0 ff ff 0f 87 05 f8 ff ff eb 62 e8 3c 25 b7 ff 4c 8b 2c 24 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 6b 0d 00 00 44 8b 33 be 00 00 70 00 44 [ 25.721110][ T291] RSP: 0018:ffffc90000a279c0 EFLAGS: 00010203 [ 25.721128][ T291] RAX: 0000000000000002 RBX: 0000000000000017 RCX: ffff888105980000 [ 25.721141][ T291] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888105980000 [ 25.731722][ T30] audit: type=1400 audit(1753224211.938:70): avc: denied { search } for pid=83 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 [ 25.741503][ T291] RBP: ffffc90000a27bd0 R08: dffffc0000000000 R09: ffffed1024136a94 [ 25.741520][ T291] R10: ffffed1024136a94 R11: 1ffff11024136a93 R12: 0000000000000002 [ 25.741534][ T291] R13: ffffc90000a27c20 R14: ffff8881239df518 R15: dffffc0000000000 [ 25.747266][ T30] audit: type=1400 audit(1753224211.938:71): avc: denied { write } for pid=83 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 [ 25.768486][ T291] FS: 00007fb6a3e196c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 25.768507][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.768521][ T291] CR2: 00007fb6a3e19d58 CR3: 000000012465d000 CR4: 00000000003506b0 [ 25.788458][ T30] audit: type=1400 audit(1753224211.938:72): avc: denied { add_name } for pid=83 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 25.794192][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.802377][ T30] audit: type=1400 audit(1753224211.938:73): avc: denied { create } for pid=83 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 25.810132][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.810148][ T291] Call Trace: [ 25.810154][ T291] [ 25.810167][ T291] ? do_filp_open+0x3e0/0x3e0 [ 25.967428][ T291] do_filp_open+0x1b3/0x3e0 [ 25.971938][ T291] ? vfs_tmpfile+0x2d0/0x2d0 [ 25.976538][ T291] do_sys_openat2+0x14c/0x7b0 [ 25.981225][ T291] ? _raw_spin_unlock_irq+0x4e/0x70 [ 25.986428][ T291] ? do_sys_open+0xe0/0xe0 [ 25.990846][ T291] ? do_notify_parent+0x800/0x800 [ 25.995873][ T291] __x64_sys_open+0x11c/0x140 [ 26.000552][ T291] x64_sys_call+0x3fc/0x9a0 [ 26.005057][ T291] do_syscall_64+0x4c/0xa0 [ 26.009475][ T291] ? clear_bhb_loop+0x50/0xa0 [ 26.014158][ T291] ? clear_bhb_loop+0x50/0xa0 [ 26.018832][ T291] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 26.024729][ T291] RIP: 0033:0x7fb6a3e78779 [ 26.029148][ T291] 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 [ 26.048757][ T291] RSP: 002b:00007fb6a3e19218 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 26.057202][ T291] RAX: ffffffffffffffda RBX: 00007fb6a3f053f8 RCX: 00007fb6a3e78779 [ 26.065174][ T291] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00002000000001c0 [ 26.073238][ T291] RBP: 00007fb6a3f053f0 R08: 0000000000000000 R09: 0000000000000000 [pid 289] futex(0x7fb6a3f053e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 288] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 26.081226][ T291] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb6a3ed203c [ 26.089213][ T291] R13: 00002000000042c0 R14: 00002000000001c0 R15: 00007fffc1cb8298 [ 26.097212][ T291] [ 26.100232][ T291] Modules linked in: [ 26.104783][ T291] ---[ end trace 7d7566fa25a57bad ]--- [ 26.110379][ T291] RIP: 0010:path_openat+0x11ff/0x2f10 [ 26.115782][ T291] Code: 48 89 df e8 03 81 02 00 49 63 de 48 81 fb 00 f0 ff ff 0f 87 05 f8 ff ff eb 62 e8 3c 25 b7 ff 4c 8b 2c 24 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 6b 0d 00 00 44 8b 33 be 00 00 70 00 44 [ 26.135462][ T291] RSP: 0018:ffffc90000a279c0 EFLAGS: 00010203 [ 26.141660][ T291] RAX: 0000000000000002 RBX: 0000000000000017 RCX: ffff888105980000 [ 26.149670][ T291] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888105980000 [ 26.157679][ T291] RBP: ffffc90000a27bd0 R08: dffffc0000000000 R09: ffffed1024136a94 [ 26.165663][ T291] R10: ffffed1024136a94 R11: 1ffff11024136a93 R12: 0000000000000002 [ 26.173659][ T291] R13: ffffc90000a27c20 R14: ffff8881239df518 R15: dffffc0000000000 [pid 288] exit_group(0 [pid 289] <... futex resumed>) = ? [pid 289] +++ exited with 0 +++ [pid 288] <... exit_group resumed>) = ? [ 26.181692][ T291] FS: 00007fb6a3e196c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 26.190677][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.197293][ T291] CR2: 000055e555fec028 CR3: 000000012465d000 CR4: 00000000003506a0 [ 26.205274][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.213289][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.221300][ T291] Kernel panic - not syncing: Fatal exception [ 26.227693][ T291] Kernel Offset: disabled [ 26.232021][ T291] Rebooting in 86400 seconds..