./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4286092248 <...> Warning: Permanently added '10.128.0.5' (ED25519) to the list of known hosts. execve("./syz-executor4286092248", ["./syz-executor4286092248"], 0x7ffc58e41160 /* 10 vars */) = 0 brk(NULL) = 0x555587d26000 brk(0x555587d26d40) = 0x555587d26d40 arch_prctl(ARCH_SET_FS, 0x555587d263c0) = 0 set_tid_address(0x555587d26690) = 278 set_robust_list(0x555587d266a0, 24) = 0 rseq(0x555587d26ce0, 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-executor4286092248", 4096) = 28 getrandom("\xb7\x82\x94\xff\x27\xa6\x07\x76", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555587d26d40 brk(0x555587d47d40) = 0x555587d47d40 brk(0x555587d48000) = 0x555587d48000 mprotect(0x7f3e9cc32000, 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(0x7f3e9cc3840c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f3e9cbd1420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f3e9cbc2aa0}, 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) = 0x7f3e9cb4d000 mprotect(0x7f3e9cb4e000, 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=0x7f3e9cb6d990, parent_tid=0x7f3e9cb6d990, exit_signal=0, stack=0x7f3e9cb4d000, stack_size=0x20300, tls=0x7f3e9cb6d6c0}./strace-static-x86_64: Process 279 attached => {parent_tid=[279]}, 88) = 279 [pid 279] set_robust_list(0x7f3e9cb6d9a0, 24) = 0 [pid 279] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 279] futex(0x7f3e9cc38408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 278] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 278] futex(0x7f3e9cc38408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 279] <... futex resumed>) = 0 [pid 279] openat(AT_FDCWD, NULL, O_RDWR) = -1 EFAULT (Bad address) [pid 279] futex(0x7f3e9cc3840c, FUTEX_WAKE_PRIVATE, 1000000 [pid 278] futex(0x7f3e9cc3840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 279] <... futex resumed>) = 0 [pid 278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 279] futex(0x7f3e9cc38408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 278] futex(0x7f3e9cc38408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 278] futex(0x7f3e9cc3840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 279] <... futex resumed>) = 0 [pid 279] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 279] futex(0x7f3e9cc3840c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 278] <... futex resumed>) = 0 [pid 278] futex(0x7f3e9cc38408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 278] futex(0x7f3e9cc3840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 279] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 279] futex(0x7f3e9cc3840c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 278] <... futex resumed>) = 0 [pid 278] futex(0x7f3e9cc38408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 278] futex(0x7f3e9cc3840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 279] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 279] futex(0x7f3e9cc3840c, FUTEX_WAKE_PRIVATE, 1000000 [pid 278] <... futex resumed>) = 0 [pid 278] futex(0x7f3e9cc38408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 278] futex(0x7f3e9cc3840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 279] <... futex resumed>) = 1 [pid 279] 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 279] futex(0x7f3e9cc3840c, FUTEX_WAKE_PRIVATE, 1000000 [pid 278] <... futex resumed>) = 0 [pid 278] futex(0x7f3e9cc38408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 278] futex(0x7f3e9cc3840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 279] <... futex resumed>) = 1 [ 22.615743][ T30] audit: type=1400 audit(1746025181.811:80): avc: denied { execmem } for pid=278 comm="syz-executor428" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 279] read(3, [pid 278] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 278] futex(0x7f3e9cc3841c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 278] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f3e9cb2c000 [pid 278] mprotect(0x7f3e9cb2d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 278] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 278] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f3e9cb4c990, parent_tid=0x7f3e9cb4c990, exit_signal=0, stack=0x7f3e9cb2c000, stack_size=0x20300, tls=0x7f3e9cb4c6c0} => {parent_tid=[281]}, 88) = 281 [pid 278] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 278] futex(0x7f3e9cc38418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 278] futex(0x7f3e9cc3841c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 281 attached [pid 281] set_robust_list(0x7f3e9cb4c9a0, 24) = 0 [pid 281] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 281] 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\x80\x00\x03\x00\x00\x00\x00\x00\x00\x00\xfd\xff\xff\xff\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x00\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 281] futex(0x7f3e9cc3841c, FUTEX_WAKE_PRIVATE, 1000000 [pid 278] <... futex resumed>) = 0 [pid 278] futex(0x7f3e9cc38418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 278] futex(0x7f3e9cc3841c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 281] <... futex resumed>) = 1 [pid 281] openat(AT_FDCWD, "./file0/file0", O_RDONLY [pid 279] <... 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\x19\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 279] write(3, "\x9a\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfb\xff\xff\xff\x04\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\xfd\xff\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x00"..., 154) = 154 [pid 279] futex(0x7f3e9cc3840c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 22.654945][ T30] audit: type=1400 audit(1746025181.851:81): avc: denied { read write } for pid=278 comm="syz-executor428" 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 [ 22.678657][ T30] audit: type=1400 audit(1746025181.851:82): avc: denied { open } for pid=278 comm="syz-executor428" 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 [ 22.702381][ T30] audit: type=1400 audit(1746025181.851:83): avc: denied { mounton } for pid=278 comm="syz-executor428" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.712153][ T281] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 22.725994][ T30] audit: type=1400 audit(1746025181.861:84): avc: denied { mount } for pid=278 comm="syz-executor428" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 22.737181][ T281] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 22.737197][ T281] CPU: 1 PID: 281 Comm: syz-executor428 Not tainted 5.15.180-syzkaller-00024-g88c4075c39ed #0 [ 22.737216][ T281] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 22.737227][ T281] RIP: 0010:path_openat+0x11ff/0x2f10 [ 22.793293][ T281] 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 bc 31 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 [ 22.812895][ T281] RSP: 0018:ffffc900009c79c0 EFLAGS: 00010202 [ 22.818963][ T281] RAX: 0000000000000001 RBX: 000000000000000a RCX: ffff88810d62bb40 [ 22.826923][ T281] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88810d62bb40 [ 22.834886][ T281] RBP: ffffc900009c7bd0 R08: dffffc0000000000 R09: ffffed102009e33e [ 22.842844][ T281] R10: ffffed102009e33e R11: 1ffff1102009e33d R12: 0000000000000000 [ 22.850983][ T281] R13: ffffc900009c7c20 R14: ffff8881075fa318 R15: dffffc0000000000 [ 22.858946][ T281] FS: 00007f3e9cb4c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.867862][ T281] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.874438][ T281] CR2: 00007f3e9cb4cd58 CR3: 0000000125089000 CR4: 00000000003506a0 [ 22.882486][ T281] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.890472][ T281] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.898448][ T281] Call Trace: [ 22.901712][ T281] [ 22.904634][ T281] ? do_filp_open+0x3e0/0x3e0 [ 22.909308][ T281] do_filp_open+0x1b3/0x3e0 [ 22.913797][ T281] ? vfs_tmpfile+0x2d0/0x2d0 [ 22.918378][ T281] do_sys_openat2+0x14c/0x7b0 [ 22.923042][ T281] ? _raw_spin_unlock_irq+0x4e/0x70 [ 22.928249][ T281] ? do_sys_open+0xe0/0xe0 [ 22.932652][ T281] ? do_notify_parent+0x800/0x800 [ 22.937664][ T281] __x64_sys_openat+0x136/0x160 [ 22.942540][ T281] x64_sys_call+0x219/0x9a0 [ 22.947028][ T281] do_syscall_64+0x4c/0xa0 [ 22.951442][ T281] ? clear_bhb_loop+0x35/0x90 [ 22.956102][ T281] ? clear_bhb_loop+0x35/0x90 [ 22.960767][ T281] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 22.966646][ T281] RIP: 0033:0x7f3e9cbab579 [ 22.971051][ T281] 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 [ 22.990640][ T281] RSP: 002b:00007f3e9cb4c218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 22.999039][ T281] RAX: ffffffffffffffda RBX: 00007f3e9cc38418 RCX: 00007f3e9cbab579 [ 23.006997][ T281] RDX: 0000000000000000 RSI: 0000200000000a80 RDI: 00000000ffffff9c [pid 279] futex(0x7f3e9cc38408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 278] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 23.014951][ T281] RBP: 00007f3e9cc38410 R08: 0000000000000000 R09: 0000000000000000 [ 23.022913][ T281] R10: 0000000000000001 R11: 0000000000000246 R12: 00007f3e9cc05034 [ 23.030869][ T281] R13: 0000200000008400 R14: 0000200000000a80 R15: 00007ffe8da68968 [ 23.038828][ T281] [ 23.041828][ T281] Modules linked in: [ 23.046461][ T281] ---[ end trace e8cbd9ce6546631c ]--- [ 23.051950][ T281] RIP: 0010:path_openat+0x11ff/0x2f10 [ 23.057368][ T281] 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 bc 31 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 [ 23.077011][ T281] RSP: 0018:ffffc900009c79c0 EFLAGS: 00010202 [ 23.083078][ T281] RAX: 0000000000000001 RBX: 000000000000000a RCX: ffff88810d62bb40 [ 23.091073][ T281] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88810d62bb40 [ 23.099172][ T281] RBP: ffffc900009c7bd0 R08: dffffc0000000000 R09: ffffed102009e33e [ 23.107521][ T281] R10: ffffed102009e33e R11: 1ffff1102009e33d R12: 0000000000000000 [pid 278] exit_group(0) = ? [pid 279] <... futex resumed>) = ? [pid 279] +++ exited with 0 +++ [ 23.115499][ T281] R13: ffffc900009c7c20 R14: ffff8881075fa318 R15: dffffc0000000000 [ 23.123495][ T281] FS: 00007f3e9cb4c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 23.132461][ T281] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.139094][ T281] CR2: 00007f3e9cb4cd58 CR3: 0000000125089000 CR4: 00000000003506a0 [ 23.147100][ T281] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.155069][ T281] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.163070][ T281] Kernel panic - not syncing: Fatal exception [ 23.169359][ T281] Kernel Offset: disabled [ 23.173681][ T281] Rebooting in 86400 seconds..