./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1222781370 <...> Warning: Permanently added '10.128.0.2' (ED25519) to the list of known hosts. execve("./syz-executor1222781370", ["./syz-executor1222781370"], 0x7ffdf0d9f070 /* 10 vars */) = 0 brk(NULL) = 0x5555696e7000 brk(0x5555696e7d40) = 0x5555696e7d40 arch_prctl(ARCH_SET_FS, 0x5555696e73c0) = 0 set_tid_address(0x5555696e7690) = 282 set_robust_list(0x5555696e76a0, 24) = 0 rseq(0x5555696e7ce0, 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-executor1222781370", 4096) = 28 getrandom("\x60\x90\x6a\x5b\x3f\x2b\x07\x6b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555696e7d40 brk(0x555569708d40) = 0x555569708d40 brk(0x555569709000) = 0x555569709000 mprotect(0x7ff440710000, 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(0x7ff4407163ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7ff4406af3a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff4406a0a20}, 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) = 0x7ff44062b000 mprotect(0x7ff44062c000, 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=0x7ff44064b990, parent_tid=0x7ff44064b990, exit_signal=0, stack=0x7ff44062b000, stack_size=0x20300, tls=0x7ff44064b6c0} => {parent_tid=[283]}, 88) = 283 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7ff4407163e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7ff4407163ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 283 attached [pid 283] set_robust_list(0x7ff44064b9a0, 24) = 0 [pid 283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 283] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 283] futex(0x7ff4407163ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7ff4407163e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7ff4407163ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 283] futex(0x7ff4407163ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7ff4407163e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7ff4407163ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [pid 283] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 283] futex(0x7ff4407163ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7ff4407163e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7ff4407163ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [pid 283] read(3, "\x38\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\x20\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x83", 8224) = 56 [pid 283] futex(0x7ff4407163ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7ff4407163e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7ff4407163ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [pid 283] 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 283] futex(0x7ff4407163ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7ff4407163e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7ff4407163ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [ 25.110898][ T24] audit: type=1400 audit(1747802747.040:64): avc: denied { execmem } for pid=282 comm="syz-executor122" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.134487][ T24] audit: type=1400 audit(1747802747.060:65): avc: denied { read write } for pid=282 comm="syz-executor122" name="fuse" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 283] mkdirat(AT_FDCWD, "./file0/file0", 000 [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 282] futex(0x7ff4407163fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff44060a000 [pid 282] mprotect(0x7ff44060b000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 282] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 282] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff44062a990, parent_tid=0x7ff44062a990, exit_signal=0, stack=0x7ff44060a000, stack_size=0x20300, tls=0x7ff44062a6c0} => {parent_tid=[285]}, 88) = 285 [pid 282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 282] futex(0x7ff4407163f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7ff4407163fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 285 attached [pid 285] set_robust_list(0x7ff44062a9a0, 24) = 0 [pid 285] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 285] read(3, "\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\x1b\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [ 25.158714][ T24] audit: type=1400 audit(1747802747.060:66): avc: denied { open } for pid=282 comm="syz-executor122" path="/dev/fuse" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 25.182286][ T24] audit: type=1400 audit(1747802747.060:67): avc: denied { mounton } for pid=282 comm="syz-executor122" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 285] write(3, "\x90\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x04\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\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfc\xff\xff\xff\xff\xff\xff\xff\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00"..., 144) = 144 [pid 285] futex(0x7ff4407163fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 285] futex(0x7ff4407163f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] <... futex resumed>) = 0 [ 25.205344][ T24] audit: type=1400 audit(1747802747.060:68): avc: denied { mount } for pid=282 comm="syz-executor122" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 25.208738][ T283] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 25.239121][ T283] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 25.247538][ T283] CPU: 1 PID: 283 Comm: syz-executor122 Not tainted 5.10.237-syzkaller #0 [ 25.256055][ T283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 25.266147][ T283] RIP: 0010:filename_create+0x201/0x680 [ 25.271696][ T283] Code: 48 3d 01 f0 ff ff 72 11 e8 4c 57 bb ff 49 bd 00 00 00 00 00 fc ff df eb 5c 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 e7 03 00 00 41 8b 1e 89 de 81 e6 00 00 70 [ 25.291299][ T283] RSP: 0018:ffffc90000af7da0 EFLAGS: 00010202 [ 25.297357][ T283] RAX: 0000000000000001 RBX: 0000000000000600 RCX: dffffc0000000000 [pid 282] exit_group(0) = ? [pid 285] <... futex resumed>) = ? [pid 285] +++ exited with 0 +++ [ 25.305323][ T283] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888121370000 [ 25.313371][ T283] RBP: ffffc90000af7ea0 R08: dffffc0000000000 R09: ffffed10242806d8 [ 25.321334][ T283] R10: ffffed10242806d8 R11: 1ffff110242806d7 R12: ffffc90000af7ec0 [ 25.329297][ T283] R13: ffffc90000af7ec0 R14: 0000000000000008 R15: ffffc90000af7ec8 [ 25.337267][ T283] FS: 00007ff44064b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.346183][ T283] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.352756][ T283] CR2: 0000200000001518 CR3: 0000000106bba000 CR4: 00000000003506a0 [ 25.360709][ T283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.368683][ T283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.376661][ T283] Call Trace: [ 25.379950][ T283] ? __check_object_size+0x2f4/0x3c0 [ 25.385338][ T283] ? kern_path_create+0x40/0x40 [ 25.390182][ T283] ? getname_flags+0x206/0x500 [ 25.394945][ T283] do_mkdirat+0x5e/0x340 [ 25.399297][ T283] ? debug_smp_processor_id+0x17/0x20 [ 25.404664][ T283] __x64_sys_mkdirat+0x7b/0x90 [ 25.409422][ T283] do_syscall_64+0x31/0x40 [ 25.413846][ T283] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.419753][ T283] RIP: 0033:0x7ff4406894f9 [ 25.424168][ T283] 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 [ 25.443772][ T283] RSP: 002b:00007ff44064b218 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 25.452178][ T283] RAX: ffffffffffffffda RBX: 00007ff4407163e8 RCX: 00007ff4406894f9 [ 25.460245][ T283] RDX: 0000000000000000 RSI: 0000200000000080 RDI: 00000000ffffff9c [ 25.468211][ T283] RBP: 00007ff4407163e0 R08: 0000000000000000 R09: 0000000000000000 [ 25.476173][ T283] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff4406e303c [ 25.484137][ T283] R13: 000020000000a200 R14: 00007ff4406e1016 R15: 00002000000020c0 [ 25.492093][ T283] Modules linked in: [ 25.496407][ T283] ---[ end trace 3c9a4e6e5f37a8ae ]--- [ 25.499501][ T24] audit: type=1400 audit(1747802747.420:69): avc: denied { read } for pid=77 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 [ 25.501966][ T283] RIP: 0010:filename_create+0x201/0x680 [ 25.523787][ T24] audit: type=1400 audit(1747802747.420:70): avc: denied { search } for pid=77 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 [ 25.529099][ T283] Code: 48 3d 01 f0 ff ff 72 11 e8 4c 57 bb ff 49 bd 00 00 00 00 00 fc ff df eb 5c 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 e7 03 00 00 41 8b 1e 89 de 81 e6 00 00 70 [ 25.529115][ T283] RSP: 0018:ffffc90000af7da0 EFLAGS: 00010202 [ 25.550392][ T24] audit: type=1400 audit(1747802747.420:71): avc: denied { write } for pid=77 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 [ 25.570258][ T283] [ 25.576181][ T24] audit: type=1400 audit(1747802747.420:72): avc: denied { add_name } for pid=77 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 25.597470][ T283] RAX: 0000000000000001 RBX: 0000000000000600 RCX: dffffc0000000000 [ 25.599691][ T24] audit: type=1400 audit(1747802747.420:73): avc: denied { create } for pid=77 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 25.620022][ T283] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888121370000 [ 25.620032][ T283] RBP: ffffc90000af7ea0 R08: dffffc0000000000 R09: ffffed10242806d8 [ 25.620041][ T283] R10: ffffed10242806d8 R11: 1ffff110242806d7 R12: ffffc90000af7ec0 [ 25.620049][ T283] R13: ffffc90000af7ec0 R14: 0000000000000008 R15: ffffc90000af7ec8 [ 25.620070][ T283] FS: 00007ff44064b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.689452][ T283] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.696022][ T283] CR2: 0000200000001518 CR3: 0000000106bba000 CR4: 00000000003506a0 [ 25.704028][ T283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.712040][ T283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.720026][ T283] Kernel panic - not syncing: Fatal exception [ 25.726425][ T283] Kernel Offset: disabled [ 25.730752][ T283] Rebooting in 86400 seconds..