./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3868356210 <...> Warning: Permanently added '10.128.0.31' (ED25519) to the list of known hosts. execve("./syz-executor3868356210", ["./syz-executor3868356210"], 0x7fff62bd8ef0 /* 10 vars */) = 0 brk(NULL) = 0x55557f493000 brk(0x55557f493d40) = 0x55557f493d40 arch_prctl(ARCH_SET_FS, 0x55557f4933c0) = 0 set_tid_address(0x55557f493690) = 286 set_robust_list(0x55557f4936a0, 24) = 0 rseq(0x55557f493ce0, 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-executor3868356210", 4096) = 28 getrandom("\x11\x59\x9c\x82\xbe\xa1\x0d\xcb", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557f493d40 brk(0x55557f4b4d40) = 0x55557f4b4d40 brk(0x55557f4b5000) = 0x55557f4b5000 mprotect(0x7ff55d32f000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 write(1, "executing program\n", 18executing program ) = 18 futex(0x7ff55d3353ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7ff55d2ce320, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff55d2bf9a0}, 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) = 0x7ff55d24a000 mprotect(0x7ff55d24b000, 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=0x7ff55d26a990, parent_tid=0x7ff55d26a990, exit_signal=0, stack=0x7ff55d24a000, stack_size=0x20300, tls=0x7ff55d26a6c0}./strace-static-x86_64: Process 287 attached => {parent_tid=[287]}, 88) = 287 [pid 287] set_robust_list(0x7ff55d26a9a0, 24) = 0 [pid 287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 287] futex(0x7ff55d3353e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 286] futex(0x7ff55d3353e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] <... futex resumed>) = 0 [pid 287] mkdirat(AT_FDCWD, "./file0", 000 [pid 286] futex(0x7ff55d3353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... mkdirat resumed>) = 0 [pid 287] futex(0x7ff55d3353ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] futex(0x7ff55d3353e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7ff55d3353e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] <... futex resumed>) = 0 [pid 287] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000 [pid 286] futex(0x7ff55d3353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... openat resumed>) = 3 [pid 287] futex(0x7ff55d3353ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7ff55d3353e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7ff55d3353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 287] futex(0x7ff55d3353ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7ff55d3353e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7ff55d3353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] 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 287] futex(0x7ff55d3353ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7ff55d3353e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7ff55d3353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] mknod("./file0/../file0/file0", 000 [pid 286] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7ff55d3353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7ff55d3353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7ff55d3353fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff55d229000 [pid 286] mprotect(0x7ff55d22a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 286] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 286] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff55d249990, parent_tid=0x7ff55d249990, exit_signal=0, stack=0x7ff55d229000, stack_size=0x20300, tls=0x7ff55d2496c0} => {parent_tid=[289]}, 88) = 289 [pid 286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 286] futex(0x7ff55d3353f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7ff55d3353fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 289 attached [pid 289] set_robust_list(0x7ff55d2499a0, 24) = 0 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x27\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 289] futex(0x7ff55d3353fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7ff55d3353f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7ff55d3353fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] 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\x1f\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 289] write(3, "\xa0\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"..., 160) = 160 [pid 289] futex(0x7ff55d3353fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 289] futex(0x7ff55d3353f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... futex resumed>) = 0 [ 20.917375][ T24] audit: type=1400 audit(1726359109.339:66): avc: denied { execmem } for pid=286 comm="syz-executor386" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.927658][ T24] audit: type=1400 audit(1726359109.349:67): avc: denied { read write } for pid=286 comm="syz-executor386" 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 [ 20.931156][ T24] audit: type=1400 audit(1726359109.349:68): avc: denied { open } for pid=286 comm="syz-executor386" 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 [ 20.935340][ T24] audit: type=1400 audit(1726359109.349:69): avc: denied { mounton } for pid=286 comm="syz-executor386" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 20.944945][ T24] audit: type=1400 audit(1726359109.359:70): avc: denied { mount } for pid=286 comm="syz-executor386" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 20.994024][ T287] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 21.005567][ T287] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 21.013878][ T287] CPU: 0 PID: 287 Comm: syz-executor386 Not tainted 5.10.225-syzkaller-00513-g8d23314f588a #0 [ 21.023943][ T287] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 21.033857][ T287] RIP: 0010:filename_create+0x225/0x750 [ 21.039222][ T287] Code: 89 e2 e8 9e 97 ff ff 49 89 c4 48 3d 01 f0 ff ff 72 07 e8 1e bb b6 ff eb 5f 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 70 04 00 00 4c 89 64 24 30 45 8b 24 24 bb [ 21.058778][ T287] RSP: 0018:ffffc90000c37d00 EFLAGS: 00010202 [ 21.064675][ T287] RAX: 0000000000000002 RBX: ffff88811caf4be0 RCX: dffffc0000000000 [ 21.072491][ T287] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 21.080300][ T287] RBP: ffffc90000c37df0 R08: ffffffff81b68a38 R09: ffffed102395e982 [pid 286] exit_group(0) = ? [pid 289] <... futex resumed>) = ? [pid 289] +++ exited with 0 +++ [ 21.088109][ T287] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000010 [ 21.096006][ T287] R13: 1ffff92000186fd1 R14: ffffc90000c37e88 R15: 1ffff92000186fd0 [ 21.103820][ T287] FS: 00007ff55d26a6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.112589][ T287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.119006][ T287] CR2: 0000000020004000 CR3: 0000000117b55000 CR4: 00000000003506b0 [ 21.126816][ T287] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.134625][ T287] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.142437][ T287] Call Trace: [ 21.145568][ T287] ? __die_body+0x62/0xb0 [ 21.149728][ T287] ? die_addr+0x9f/0xd0 [ 21.153721][ T287] ? exc_general_protection+0x3ff/0x490 [ 21.159107][ T287] ? asm_exc_general_protection+0x1e/0x30 [ 21.164654][ T287] ? fast_dput+0x78/0x2a0 [ 21.168823][ T287] ? filename_create+0x225/0x750 [ 21.173596][ T287] ? __check_object_size+0x2e6/0x3c0 [ 21.178717][ T287] ? kern_path_create+0x40/0x40 [ 21.183404][ T287] do_mknodat+0x187/0x450 [ 21.187568][ T287] ? may_open+0x3f0/0x3f0 [ 21.191737][ T287] ? fpu__clear_all+0x20/0x20 [ 21.196247][ T287] __x64_sys_mknod+0x80/0x90 [ 21.200675][ T287] do_syscall_64+0x34/0x70 [ 21.204927][ T287] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.210655][ T287] RIP: 0033:0x7ff55d2a8479 [ 21.214921][ T287] 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 [ 21.234371][ T287] RSP: 002b:00007ff55d26a218 EFLAGS: 00000246 ORIG_RAX: 0000000000000085 [ 21.242596][ T287] RAX: ffffffffffffffda RBX: 00007ff55d3353e8 RCX: 00007ff55d2a8479 [ 21.250403][ T287] RDX: 0000000000000700 RSI: 0000000000000000 RDI: 00000000200002c0 [ 21.258303][ T287] RBP: 00007ff55d3353e0 R08: 0000000000000000 R09: 0000000000000000 [ 21.266132][ T287] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff55d302034 [ 21.273925][ T287] R13: 00007ff55d302050 R14: 00007ff55d30000e R15: 0030656c69662f30 [ 21.281736][ T287] Modules linked in: [ 21.285855][ T287] ---[ end trace 25ef880f66d58002 ]--- [ 21.291254][ T287] RIP: 0010:filename_create+0x225/0x750 [ 21.296759][ T287] Code: 89 e2 e8 9e 97 ff ff 49 89 c4 48 3d 01 f0 ff ff 72 07 e8 1e bb b6 ff eb 5f 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 70 04 00 00 4c 89 64 24 30 45 8b 24 24 bb [ 21.316220][ T287] RSP: 0018:ffffc90000c37d00 EFLAGS: 00010202 [ 21.322237][ T287] RAX: 0000000000000002 RBX: ffff88811caf4be0 RCX: dffffc0000000000 [ 21.329953][ T287] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 21.337761][ T287] RBP: ffffc90000c37df0 R08: ffffffff81b68a38 R09: ffffed102395e982 [ 21.345560][ T287] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000010 [ 21.353393][ T287] R13: 1ffff92000186fd1 R14: ffffc90000c37e88 R15: 1ffff92000186fd0 [ 21.361192][ T287] FS: 00007ff55d26a6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 21.369970][ T287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.376375][ T287] CR2: 00005617ae306bb8 CR3: 0000000117b55000 CR4: 00000000003506a0 [ 21.384184][ T287] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.392072][ T287] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.399819][ T287] Kernel panic - not syncing: Fatal exception [ 21.406088][ T287] Kernel Offset: disabled [ 21.410320][ T287] Rebooting in 86400 seconds..