./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2459507060 <...> Warning: Permanently added '10.128.0.164' (ED25519) to the list of known hosts. execve("./syz-executor2459507060", ["./syz-executor2459507060"], 0x7ffdf81c1940 /* 10 vars */) = 0 brk(NULL) = 0x55558b766000 brk(0x55558b766d40) = 0x55558b766d40 arch_prctl(ARCH_SET_FS, 0x55558b7663c0) = 0 set_tid_address(0x55558b766690) = 282 set_robust_list(0x55558b7666a0, 24) = 0 rseq(0x55558b766ce0, 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-executor2459507060", 4096) = 28 getrandom("\x17\xa9\x0e\x15\x8a\xd8\x12\xb4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558b766d40 brk(0x55558b787d40) = 0x55558b787d40 brk(0x55558b788000) = 0x55558b788000 mprotect(0x7f44f9c46000, 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(0x7f44f9c4c6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f44f9be7710, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f44f9bd8dc0}, 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) = 0x7f44f9b5f000 mprotect(0x7f44f9b60000, 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=0x7f44f9b7f990, parent_tid=0x7f44f9b7f990, exit_signal=0, stack=0x7f44f9b5f000, stack_size=0x20300, tls=0x7f44f9b7f6c0} => {parent_tid=[283]}, 88) = 283 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f44f9c4c6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f44f9c4c6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 283 attached [pid 283] set_robust_list(0x7f44f9b7f9a0, 24) = 0 [pid 283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 283] memfd_create("syzkaller", 0) = 3 [pid 283] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f44f175f000 [pid 283] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 283] munmap(0x7f44f175f000, 138412032) = 0 [pid 283] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 283] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 283] close(3) = 0 [ 23.513422][ T24] audit: type=1400 audit(1750372851.270:64): avc: denied { execmem } for pid=282 comm="syz-executor245" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.537108][ T24] audit: type=1400 audit(1750372851.290:65): avc: denied { read write } for pid=282 comm="syz-executor245" name="loop0" dev="devtmpfs" ino=115 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 23.561444][ T24] audit: type=1400 audit(1750372851.290:66): avc: denied { open } for pid=282 comm="syz-executor245" path="/dev/loop0" dev="devtmpfs" ino=115 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 23.585545][ T24] audit: type=1400 audit(1750372851.300:67): avc: denied { ioctl } for pid=282 comm="syz-executor245" path="/dev/loop0" dev="devtmpfs" ino=115 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 283] close(4) = 0 [pid 283] mkdir("./file0", 0777) = 0 [ 23.671660][ T24] audit: type=1400 audit(1750372851.430:68): avc: denied { mounton } for pid=282 comm="syz-executor245" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.671695][ T283] exfat: Deprecated parameter 'namecase' [ 23.700101][ T283] exfat: Deprecated parameter 'namecase' [pid 283] mount("/dev/loop0", "./file0", "exfat", MS_POSIXACL|MS_I_VERSION, "errors=continue,iocharset=iso8859-1,dmask=00000000000037777777777,iocharset=koi8-ru,iocharset=cp437,"...) = 0 [pid 283] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 283] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 283] ioctl(4, LOOP_CLR_FD) = 0 [pid 283] close(4) = 0 [pid 283] futex(0x7f44f9c4c6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7f44f9c4c6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7f44f9c4c6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [pid 283] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 4 [pid 283] futex(0x7f44f9c4c6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7f44f9c4c6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7f44f9c4c6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [pid 283] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000004,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 283] futex(0x7f44f9c4c6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7f44f9c4c6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7f44f9c4c6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [pid 283] read(4, "\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(0x7f44f9c4c6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7f44f9c4c6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7f44f9c4c6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [pid 283] write(4, "\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\x1a\x00\x01\x08\x6d\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\x00\x00\x00\x00\x00\x00\x00\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 283] futex(0x7f44f9c4c6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7f44f9c4c6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7f44f9c4c6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [ 23.754719][ T283] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0xfcc0b04e, utbl_chksum : 0xe619d30d) [ 23.767279][ T24] audit: type=1400 audit(1750372851.520:69): avc: denied { mount } for pid=282 comm="syz-executor245" name="/" dev="loop0" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [pid 283] read(4, [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 282] futex(0x7f44f9c4c6dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f44f9b3e000 [pid 282] mprotect(0x7f44f9b3f000, 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=0x7f44f9b5e990, parent_tid=0x7f44f9b5e990, exit_signal=0, stack=0x7f44f9b3e000, stack_size=0x20300, tls=0x7f44f9b5e6c0} => {parent_tid=[288]}, 88) = 288 [pid 282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 282] futex(0x7f44f9c4c6d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7f44f9c4c6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 288 attached [pid 288] set_robust_list(0x7f44f9b5e9a0, 24) = 0 [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] newfstatat(AT_FDCWD, "./file0/file1", [pid 283] <... 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\x20\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x31\x00", 8192) = 46 [pid 283] write(4, "\xae\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\x01\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfd\xff\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00"..., 174) = 174 [pid 283] futex(0x7f44f9c4c6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 23.789874][ T24] audit: type=1400 audit(1750372851.520:70): avc: denied { read write } for pid=282 comm="syz-executor245" 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 [ 23.813348][ T24] audit: type=1400 audit(1750372851.520:71): avc: denied { open } for pid=282 comm="syz-executor245" 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 [ 23.836721][ T24] audit: type=1400 audit(1750372851.520:72): avc: denied { mounton } for pid=282 comm="syz-executor245" path="/root/file0" dev="loop0" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 23.838743][ T288] general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN [ 23.859961][ T24] audit: type=1400 audit(1750372851.520:73): avc: denied { mount } for pid=282 comm="syz-executor245" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 23.871230][ T288] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 23.871249][ T288] CPU: 0 PID: 288 Comm: syz-executor245 Not tainted 5.10.238-syzkaller-00282-gd76d4cd0623a #0 [ 23.871254][ T288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 23.871281][ T288] RIP: 0010:step_into+0x122/0xcf0 [ 23.871296][ T288] Code: c6 44 24 5f 00 43 0f b6 44 25 00 84 c0 48 8b 54 24 08 0f 85 51 0a 00 00 44 8b 32 4c 8b bc 24 88 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 56 0a 00 00 45 8b 3f 44 89 fe 81 e6 00 [ 23.946511][ T288] RSP: 0018:ffffc90000bf77e0 EFLAGS: 00010207 [ 23.952574][ T288] RAX: 0000000000000003 RBX: ffffc90000bf7a00 RCX: ffff888106bccf00 [ 23.960526][ T288] RDX: ffffc90000bf7a38 RSI: 0000000000000000 RDI: 0000000000000000 [ 23.968485][ T288] RBP: ffffc90000bf78c8 R08: 0000000000000000 R09: ffffed102418a255 [ 23.976439][ T288] R10: ffffed102418a255 R11: 1ffff1102418a254 R12: dffffc0000000000 [ 23.984389][ T288] R13: 1ffff9200017ef47 R14: 0000000000000001 R15: 000000000000001e [ 23.992339][ T288] FS: 00007f44f9b5e6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.001243][ T288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.007804][ T288] CR2: 000000000045c780 CR3: 0000000106bba000 CR4: 00000000003506b0 [ 24.015752][ T288] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.023719][ T288] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.031667][ T288] Call Trace: [ 24.034940][ T288] ? lookup_fast+0x2fa/0x700 [ 24.039506][ T288] ? set_root+0x3f0/0x3f0 [ 24.043817][ T288] ? __kasan_check_write+0x14/0x20 [ 24.048908][ T288] ? up_read+0x12/0x50 [ 24.052956][ T288] walk_component+0x26a/0x460 [ 24.057610][ T288] path_lookupat+0x180/0x490 [ 24.062190][ T288] filename_lookup+0x1d5/0x600 [ 24.066929][ T288] ? hashlen_string+0x120/0x120 [ 24.071756][ T288] ? getname_flags+0x206/0x500 [ 24.076495][ T288] user_path_at_empty+0x43/0x50 [ 24.081320][ T288] vfs_statx+0xff/0x520 [ 24.085562][ T288] ? switch_mm_irqs_off+0x763/0x9a0 [ 24.090745][ T288] ? __switch_to_asm+0x34/0x60 [ 24.095491][ T288] ? vfs_fstatat+0x40/0x40 [ 24.099893][ T288] ? __kasan_check_write+0x14/0x20 [ 24.104986][ T288] __se_sys_newfstatat+0xc6/0x340 [ 24.109994][ T288] ? _raw_spin_lock_irqsave+0x110/0x110 [ 24.115582][ T288] ? __x64_sys_newfstatat+0xb0/0xb0 [ 24.120780][ T288] ? _raw_spin_unlock_irq+0x4e/0x70 [ 24.125959][ T288] ? cgroup_leave_frozen+0x166/0x2b0 [ 24.131230][ T288] ? ptrace_stop+0x51e/0x9c0 [ 24.135807][ T288] ? ptrace_stop+0x69f/0x9c0 [ 24.140383][ T288] ? fpu__clear_all+0x20/0x20 [ 24.145039][ T288] ? fpu__clear_all+0x20/0x20 [ 24.149700][ T288] __x64_sys_newfstatat+0x9b/0xb0 [ 24.154720][ T288] do_syscall_64+0x31/0x40 [ 24.159124][ T288] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 24.165007][ T288] RIP: 0033:0x7f44f9bc18b9 [ 24.169415][ T288] 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 [ 24.189004][ T288] RSP: 002b:00007f44f9b5e218 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 [ 24.197401][ T288] RAX: ffffffffffffffda RBX: 00007f44f9c4c6d8 RCX: 00007f44f9bc18b9 [pid 283] futex(0x7f44f9c4c6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 24.205355][ T288] RDX: 0000000000000000 RSI: 0000200000000180 RDI: ffffffffffffff9c [ 24.213418][ T288] RBP: 00007f44f9c4c6d0 R08: 00007fff0c7fe717 R09: 0000000000000000 [ 24.221382][ T288] R10: 0000000000004000 R11: 0000000000000246 R12: 00007f44f9c196a4 [ 24.229334][ T288] R13: 0000200000008280 R14: 0000200000000180 R15: 00007fff0c7fe718 [ 24.237298][ T288] Modules linked in: [ 24.241875][ T288] ---[ end trace 7577ba691e279436 ]--- [ 24.247435][ T288] RIP: 0010:step_into+0x122/0xcf0 [ 24.252497][ T288] Code: c6 44 24 5f 00 43 0f b6 44 25 00 84 c0 48 8b 54 24 08 0f 85 51 0a 00 00 44 8b 32 4c 8b bc 24 88 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 56 0a 00 00 45 8b 3f 44 89 fe 81 e6 00 [ 24.272111][ T288] RSP: 0018:ffffc90000bf77e0 EFLAGS: 00010207 [ 24.278162][ T288] RAX: 0000000000000003 RBX: ffffc90000bf7a00 RCX: ffff888106bccf00 [ 24.286136][ T288] RDX: ffffc90000bf7a38 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.294109][ T288] RBP: ffffc90000bf78c8 R08: 0000000000000000 R09: ffffed102418a255 [ 24.302093][ T288] R10: ffffed102418a255 R11: 1ffff1102418a254 R12: dffffc0000000000 [ 24.310061][ T288] R13: 1ffff9200017ef47 R14: 0000000000000001 R15: 000000000000001e [ 24.318078][ T288] FS: 00007f44f9b5e6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.327014][ T288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.333599][ T288] CR2: 000000000045c780 CR3: 0000000106bba000 CR4: 00000000003506b0 [ 24.341573][ T288] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.349527][ T288] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.357502][ T288] Kernel panic - not syncing: Fatal exception [ 24.363877][ T288] Kernel Offset: disabled [ 24.368195][ T288] Rebooting in 86400 seconds..