./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2588531504 <...> Warning: Permanently added '10.128.0.134' (ED25519) to the list of known hosts. execve("./syz-executor2588531504", ["./syz-executor2588531504"], 0x7fff6595d560 /* 10 vars */) = 0 brk(NULL) = 0x5555885c2000 brk(0x5555885c2d40) = 0x5555885c2d40 arch_prctl(ARCH_SET_FS, 0x5555885c23c0) = 0 set_tid_address(0x5555885c2690) = 289 set_robust_list(0x5555885c26a0, 24) = 0 rseq(0x5555885c2ce0, 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-executor2588531504", 4096) = 28 getrandom("\xab\x2e\x96\xd5\x77\x04\x75\xf4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555885c2d40 brk(0x5555885e3d40) = 0x5555885e3d40 brk(0x5555885e4000) = 0x5555885e4000 mprotect(0x7f1b6b335000, 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(0x7f1b6b33b3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f1b6b2d43a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1b6b2c5a20}, 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) = 0x7f1b6b250000 mprotect(0x7f1b6b251000, 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=0x7f1b6b270990, parent_tid=0x7f1b6b270990, exit_signal=0, stack=0x7f1b6b250000, stack_size=0x20300, tls=0x7f1b6b2706c0} => {parent_tid=[290]}, 88) = 290 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f1b6b33b3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f1b6b33b3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x7f1b6b2709a0, 24) = 0 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 290] futex(0x7f1b6b33b3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f1b6b33b3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f1b6b33b3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 290] futex(0x7f1b6b33b3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f1b6b33b3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f1b6b33b3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 290] futex(0x7f1b6b33b3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f1b6b33b3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f1b6b33b3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] 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\x26\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x73\x09\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 290] futex(0x7f1b6b33b3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f1b6b33b3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f1b6b33b3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [ 25.072629][ T28] audit: type=1400 audit(1754499965.768:64): avc: denied { execmem } for pid=289 comm="syz-executor258" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.092391][ T28] audit: type=1400 audit(1754499965.768:65): avc: denied { read write } for pid=289 comm="syz-executor258" name="fuse" dev="devtmpfs" ino=93 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 290] read(3, [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7f1b6b33b3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7f1b6b33b3fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1b6b22f000 [pid 289] mprotect(0x7f1b6b230000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 289] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 289] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1b6b24f990, parent_tid=0x7f1b6b24f990, exit_signal=0, stack=0x7f1b6b22f000, stack_size=0x20300, tls=0x7f1b6b24f6c0} => {parent_tid=[292]}, 88) = 292 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7f1b6b33b3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f1b6b33b3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 292 attached [pid 292] set_robust_list(0x7f1b6b24f9a0, 24) = 0 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] 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 292] futex(0x7f1b6b33b3fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f1b6b33b3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f1b6b33b3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] <... futex resumed>) = 1 [pid 292] link("./file0/../file0/file0", NULL [pid 290] <... 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\x24\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 290] write(3, "\xa9\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 169) = 169 [pid 290] futex(0x7f1b6b33b3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 25.116532][ T28] audit: type=1400 audit(1754499965.768:66): avc: denied { open } for pid=289 comm="syz-executor258" path="/dev/fuse" dev="devtmpfs" ino=93 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 25.140476][ T28] audit: type=1400 audit(1754499965.768:67): avc: denied { mounton } for pid=289 comm="syz-executor258" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 25.148429][ T292] general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN [ 25.163876][ T28] audit: type=1400 audit(1754499965.768:68): avc: denied { mount } for pid=289 comm="syz-executor258" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 25.175509][ T292] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 25.175529][ T292] CPU: 1 PID: 292 Comm: syz-executor258 Not tainted 6.1.145-syzkaller-00039-g39e817cf9025 #0 [ 25.175550][ T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 25.175561][ T292] RIP: 0010:step_into+0x11d/0xf30 [ 25.199449][ T28] audit: type=1400 audit(1754499965.898:69): avc: denied { read } for pid=84 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 [ 25.206413][ T292] Code: 74 24 08 c6 44 24 7f 00 43 0f b6 04 3c 84 c0 4d 89 fd 0f 85 08 0c 00 00 45 8b 36 4c 8b bc 24 a8 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 07 0c 00 00 45 8b 3f 44 89 fe 81 e6 00 [ 25.206433][ T292] RSP: 0018:ffffc90000f27a60 EFLAGS: 00010206 [ 25.206451][ T292] RAX: 0000000000000003 RBX: ffffc90000f27ca0 RCX: ffff8881104c2880 [ 25.206465][ T292] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 25.206477][ T292] RBP: ffffc90000f27b78 R08: dffffc0000000000 R09: ffffed1022370a35 [ 25.217173][ T28] audit: type=1400 audit(1754499965.898:70): avc: denied { search } for pid=84 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 [ 25.226851][ T292] R10: ffffed1022370a35 R11: 1ffff11022370a34 R12: 1ffff920001e4f9b [ 25.226870][ T292] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000019 [ 25.226883][ T292] FS: 00007f1b6b24f6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.226901][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.232335][ T28] audit: type=1400 audit(1754499965.898:71): avc: denied { write } for pid=84 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 [ 25.253885][ T292] CR2: 000055fb55233eb8 CR3: 0000000123203000 CR4: 00000000003506a0 [ 25.253909][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.253920][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.253932][ T292] Call Trace: [ 25.253938][ T292] [ 25.253946][ T292] ? __lookup_slow+0x376/0x3f0 [ 25.274069][ T28] audit: type=1400 audit(1754499965.898:72): avc: denied { add_name } for pid=84 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 25.279640][ T292] ? lookup_one_len+0x2d0/0x2d0 [ 25.287985][ T28] audit: type=1400 audit(1754499965.898:73): avc: denied { create } for pid=84 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 25.295727][ T292] ? down_read+0xa0/0xf0 [ 25.295757][ T292] ? set_root+0x400/0x400 [ 25.468463][ T292] ? up_read+0x56/0x1d0 [ 25.472646][ T292] walk_component+0x24c/0x420 [ 25.477337][ T292] path_lookupat+0x180/0x490 [ 25.481932][ T292] filename_lookup+0x1f0/0x500 [ 25.486880][ T292] ? __cfi_filename_lookup+0x10/0x10 [ 25.492183][ T292] ? __kasan_slab_free+0x11/0x20 [ 25.497128][ T292] ? slab_free_freelist_hook+0xc2/0x190 [ 25.502782][ T292] do_linkat+0xed/0x730 [ 25.506955][ T292] __x64_sys_link+0x86/0x90 [ 25.511471][ T292] x64_sys_call+0x266/0x9a0 [ 25.516082][ T292] do_syscall_64+0x4c/0xa0 [ 25.520598][ T292] ? clear_bhb_loop+0x30/0x80 [ 25.525301][ T292] ? clear_bhb_loop+0x30/0x80 [ 25.530081][ T292] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 25.535983][ T292] RIP: 0033:0x7f1b6b2ae4f9 [ 25.540419][ T292] 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 [ 25.560323][ T292] RSP: 002b:00007f1b6b24f218 EFLAGS: 00000246 ORIG_RAX: 0000000000000056 [pid 290] futex(0x7f1b6b33b3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 25.568946][ T292] RAX: ffffffffffffffda RBX: 00007f1b6b33b3f8 RCX: 00007f1b6b2ae4f9 [ 25.576936][ T292] RDX: 00007f1b6b2ae4f9 RSI: 0000000000000000 RDI: 0000200000000280 [ 25.584921][ T292] RBP: 00007f1b6b33b3f0 R08: 0000000000000000 R09: 0000000000000000 [ 25.592990][ T292] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1b6b308034 [ 25.600973][ T292] R13: 000020000000c280 R14: 0000200000000280 R15: 00007ffc2ec372d8 [ 25.608968][ T292] [ 25.611992][ T292] Modules linked in: [ 25.616630][ T292] ---[ end trace 0000000000000000 ]--- [ 25.622361][ T292] RIP: 0010:step_into+0x11d/0xf30 [ 25.627600][ T292] Code: 74 24 08 c6 44 24 7f 00 43 0f b6 04 3c 84 c0 4d 89 fd 0f 85 08 0c 00 00 45 8b 36 4c 8b bc 24 a8 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 07 0c 00 00 45 8b 3f 44 89 fe 81 e6 00 [ 25.647586][ T292] RSP: 0018:ffffc90000f27a60 EFLAGS: 00010206 [ 25.653704][ T292] RAX: 0000000000000003 RBX: ffffc90000f27ca0 RCX: ffff8881104c2880 [ 25.661889][ T292] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 25.670084][ T292] RBP: ffffc90000f27b78 R08: dffffc0000000000 R09: ffffed1022370a35 [ 25.678277][ T292] R10: ffffed1022370a35 R11: 1ffff11022370a34 R12: 1ffff920001e4f9b [ 25.686373][ T292] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000019 [ 25.694389][ T292] FS: 00007f1b6b24f6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 25.703447][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.710092][ T292] CR2: 00007ffc2eddb020 CR3: 0000000123203000 CR4: 00000000003506b0 [ 25.718105][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.726213][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.734579][ T292] Kernel panic - not syncing: Fatal exception [ 25.740922][ T292] Kernel Offset: disabled [ 25.745298][ T292] Rebooting in 86400 seconds..