./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor593822941 <...> Warning: Permanently added '10.128.0.174' (ED25519) to the list of known hosts. execve("./syz-executor593822941", ["./syz-executor593822941"], 0x7fff23681d00 /* 10 vars */) = 0 brk(NULL) = 0x5555568ba000 brk(0x5555568bad40) = 0x5555568bad40 arch_prctl(ARCH_SET_FS, 0x5555568ba3c0) = 0 set_tid_address(0x5555568ba690) = 295 set_robust_list(0x5555568ba6a0, 24) = 0 rseq(0x5555568bace0, 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-executor593822941", 4096) = 27 getrandom("\xe0\x2f\x65\xa4\x2b\x1b\xd7\xe4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555568bad40 brk(0x5555568dbd40) = 0x5555568dbd40 brk(0x5555568dc000) = 0x5555568dc000 mprotect(0x7fc5179c2000, 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 futex(0x7fc5179c83ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fc517961320, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fc5179529a0}, 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) = 0x7fc5178dd000 mprotect(0x7fc5178de000, 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=0x7fc5178fd990, parent_tid=0x7fc5178fd990, exit_signal=0, stack=0x7fc5178dd000, stack_size=0x20300, tls=0x7fc5178fd6c0} => {parent_tid=[296]}, 88) = 296 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fc5179c83e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fc5179c83ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x7fc5178fd9a0, 24) = 0 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] mkdir("./file0", 000) = 0 [pid 296] futex(0x7fc5179c83ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fc5179c83e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fc5179c83ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 296] futex(0x7fc5179c83ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fc5179c83e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fc5179c83ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 296] futex(0x7fc5179c83ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fc5179c83e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fc5179c83ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] 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 296] futex(0x7fc5179c83ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fc5179c83e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fc5179c83ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [ 32.965851][ T24] audit: type=1400 audit(1708874850.170:66): avc: denied { execmem } for pid=295 comm="syz-executor593" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 32.985965][ T24] audit: type=1400 audit(1708874850.190:67): avc: denied { read write } for pid=295 comm="syz-executor593" 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 296] read(3, [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7fc5179c83fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc5178bc000 [pid 295] mprotect(0x7fc5178bd000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 295] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 295] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fc5178dc990, parent_tid=0x7fc5178dc990, exit_signal=0, stack=0x7fc5178bc000, stack_size=0x20300, tls=0x7fc5178dc6c0}./strace-static-x86_64: Process 298 attached => {parent_tid=[298]}, 88) = 298 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] futex(0x7fc5179c83f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fc5179c83fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] set_robust_list(0x7fc5178dc9a0, 24) = 0 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] 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 298] futex(0x7fc5179c83fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fc5179c83f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fc5179c83fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... futex resumed>) = 1 [pid 298] rename("./file0/../file0/file0", "./file0/../file0/file0" [pid 296] <... 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\x2a\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 296] write(3, "\x91\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"..., 145) = 145 [pid 296] futex(0x7fc5179c83ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 33.009949][ T24] audit: type=1400 audit(1708874850.190:68): avc: denied { open } for pid=295 comm="syz-executor593" 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 [ 33.033359][ T24] audit: type=1400 audit(1708874850.190:69): avc: denied { mounton } for pid=295 comm="syz-executor593" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 33.057847][ T24] audit: type=1400 audit(1708874850.200:70): avc: denied { mount } for pid=295 comm="syz-executor593" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 33.066986][ T298] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 33.092461][ T298] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 33.100711][ T298] CPU: 0 PID: 298 Comm: syz-executor593 Not tainted 5.10.209-syzkaller-00435-gdd976ecce2ce #0 [ 33.110812][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 33.120697][ T298] RIP: 0010:do_renameat2+0x5e6/0x1130 [ 33.125871][ T298] Code: 89 de 8b 54 24 3c e8 f9 30 ff ff 49 89 c5 48 3d 01 f0 ff ff 72 0d e8 e9 7b b6 ff 44 89 eb e9 d7 03 00 00 4d 89 ec 49 c1 ec 03 <43> 0f b6 04 3c 84 c0 0f 85 d6 05 00 00 41 8b 5d 00 be 00 00 70 00 [ 33.145405][ T298] RSP: 0018:ffffc90000b37d00 EFLAGS: 00010246 [ 33.151298][ T298] RAX: 0000000000000001 RBX: ffff88811d07e660 RCX: ffff88811f2862c0 [ 33.159110][ T298] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 33.166924][ T298] RBP: ffffc90000b37f08 R08: ffffffff81b65c1b R09: ffffed1023a0fcd8 [ 33.174740][ T298] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 33.182639][ T298] R13: 0000000000000001 R14: 00000000ffffff01 R15: dffffc0000000000 [ 33.190472][ T298] FS: 00007fc5178dc6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 33.199213][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.205665][ T298] CR2: 00007fbb22730304 CR3: 000000011e1f9000 CR4: 00000000003506b0 [ 33.213443][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.221261][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.229069][ T298] Call Trace: [ 33.232381][ T298] ? __die_body+0x62/0xb0 [ 33.236531][ T298] ? die_addr+0x9f/0xd0 [ 33.240525][ T298] ? exc_general_protection+0x3ff/0x490 [ 33.245921][ T298] ? asm_exc_general_protection+0x1e/0x30 [ 33.251549][ T298] ? dput+0x8b/0x310 [ 33.255287][ T298] ? do_renameat2+0x5e6/0x1130 [ 33.259891][ T298] ? fsnotify_move+0x290/0x290 [ 33.265107][ T298] ? getname_flags+0x1fd/0x520 [ 33.269719][ T298] __x64_sys_rename+0x86/0x90 [ 33.274294][ T298] do_syscall_64+0x34/0x70 [ 33.278546][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 33.284267][ T298] RIP: 0033:0x7fc51793b479 [ 33.288520][ T298] 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 [ 33.307999][ T298] RSP: 002b:00007fc5178dc218 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [pid 296] futex(0x7fc5179c83e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 33.316208][ T298] RAX: ffffffffffffffda RBX: 00007fc5179c83f8 RCX: 00007fc51793b479 [ 33.324019][ T298] RDX: 00007fc51793b479 RSI: 0000000020000140 RDI: 0000000020000100 [ 33.331931][ T298] RBP: 00007fc5179c83f0 R08: 0000000000000000 R09: 0000000000000000 [ 33.339741][ T298] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc51799501c [ 33.347647][ T298] R13: 00007fc517995038 R14: 00007ffebd3c7cc0 R15: 0030656c69662f30 [ 33.355450][ T298] Modules linked in: [ 33.360968][ T298] ---[ end trace 4b638cde25adcd1c ]--- [ 33.366407][ T298] RIP: 0010:do_renameat2+0x5e6/0x1130 [ 33.371829][ T298] Code: 89 de 8b 54 24 3c e8 f9 30 ff ff 49 89 c5 48 3d 01 f0 ff ff 72 0d e8 e9 7b b6 ff 44 89 eb e9 d7 03 00 00 4d 89 ec 49 c1 ec 03 <43> 0f b6 04 3c 84 c0 0f 85 d6 05 00 00 41 8b 5d 00 be 00 00 70 00 [ 33.391514][ T298] RSP: 0018:ffffc90000b37d00 EFLAGS: 00010246 [ 33.398510][ T298] RAX: 0000000000000001 RBX: ffff88811d07e660 RCX: ffff88811f2862c0 [ 33.406596][ T298] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 33.414534][ T298] RBP: ffffc90000b37f08 R08: ffffffff81b65c1b R09: ffffed1023a0fcd8 [ 33.422530][ T298] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 33.430369][ T298] R13: 0000000000000001 R14: 00000000ffffff01 R15: dffffc0000000000 [ 33.438181][ T298] FS: 00007fc5178dc6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 33.447053][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.453450][ T298] CR2: 00007fbb22730304 CR3: 000000011e1f9000 CR4: 00000000003506b0 [ 33.461294][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.469053][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.476905][ T298] Kernel panic - not syncing: Fatal exception [ 33.482963][ T298] Kernel Offset: disabled [ 33.487140][ T298] Rebooting in 86400 seconds..