./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3600529693 <...> Warning: Permanently added '10.128.1.42' (ED25519) to the list of known hosts. execve("./syz-executor3600529693", ["./syz-executor3600529693"], 0x7ffee75e4a70 /* 10 vars */) = 0 brk(NULL) = 0x555557363000 brk(0x555557363d40) = 0x555557363d40 arch_prctl(ARCH_SET_FS, 0x5555573633c0) = 0 set_tid_address(0x555557363690) = 287 set_robust_list(0x5555573636a0, 24) = 0 rseq(0x555557363ce0, 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-executor3600529693", 4096) = 28 getrandom("\x54\xee\xa6\xc6\xc3\x2c\x34\xb5", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557363d40 brk(0x555557384d40) = 0x555557384d40 brk(0x555557385000) = 0x555557385000 mprotect(0x7f1c5e9ac000, 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(0x7f1c5e9b23ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f1c5e94f1a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1c5e940820}, 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) = 0x7f1c5e8cb000 mprotect(0x7f1c5e8cc000, 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=0x7f1c5e8eb990, parent_tid=0x7f1c5e8eb990, exit_signal=0, stack=0x7f1c5e8cb000, stack_size=0x20300, tls=0x7f1c5e8eb6c0} => {parent_tid=[288]}, 88) = 288 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f1c5e9b23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f1c5e9b23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 288 attached [pid 288] set_robust_list(0x7f1c5e8eb9a0, 24) = 0 [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 288] futex(0x7f1c5e9b23ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f1c5e9b23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f1c5e9b23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 288] futex(0x7f1c5e9b23ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f1c5e9b23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f1c5e9b23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 288] futex(0x7f1c5e9b23ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f1c5e9b23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f1c5e9b23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] 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 288] futex(0x7f1c5e9b23ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f1c5e9b23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f1c5e9b23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x1f\x00\x00\x00\x00\x00\x00\x00\x90\xa3\xee\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 288] futex(0x7f1c5e9b23ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f1c5e9b23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f1c5e9b23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [ 21.918595][ T24] audit: type=1400 audit(1693049187.700:66): avc: denied { execmem } for pid=287 comm="syz-executor360" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.926223][ T24] audit: type=1400 audit(1693049187.710:67): avc: denied { read write } for pid=287 comm="syz-executor360" 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 [ 21.932296][ T24] audit: type=1400 audit(1693049187.710:68): avc: denied { open } for pid=287 comm="syz-executor360" 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 [ 21.937197][ T24] audit: type=1400 audit(1693049187.710:69): avc: denied { mounton } for pid=287 comm="syz-executor360" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 288] readlink("./file0/file0/file0/file0/file0", [pid 287] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7f1c5e9b23fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1c5e8aa000 [pid 287] mprotect(0x7f1c5e8ab000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 287] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 287] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1c5e8ca990, parent_tid=0x7f1c5e8ca990, exit_signal=0, stack=0x7f1c5e8aa000, stack_size=0x20300, tls=0x7f1c5e8ca6c0} => {parent_tid=[290]}, 88) = 290 [pid 287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 287] futex(0x7f1c5e9b23f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f1c5e9b23fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x7f1c5e8ca9a0, 24) = 0 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] write(3, NULL, 0) = -1 EINVAL (Invalid argument) [pid 290] futex(0x7f1c5e9b23fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f1c5e9b23f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f1c5e9b23fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] 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\x20\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8224) = 46 [pid 290] futex(0x7f1c5e9b23fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f1c5e9b23f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f1c5e9b23fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] socketpair(AF_UNIX, SOCK_DGRAM, 0, NULL) = -1 EFAULT (Bad address) [pid 290] futex(0x7f1c5e9b23fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f1c5e9b23f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f1c5e9b23fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] write(3, "\xa0\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00\x3f\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\xff\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00\x81\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00\x00"..., 160) = 160 [pid 290] futex(0x7f1c5e9b23fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 290] futex(0x7f1c5e9b23f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 287] <... futex resumed>) = 0 [ 21.954283][ T24] audit: type=1400 audit(1693049187.710:70): avc: denied { mount } for pid=287 comm="syz-executor360" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 21.977908][ T288] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 21.989631][ T288] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 21.997876][ T288] CPU: 0 PID: 288 Comm: syz-executor360 Not tainted 5.10.189-syzkaller-00615-gc6a1fbd8e4aa #0 [ 22.007938][ T288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 22.017857][ T288] RIP: 0010:step_into+0x1b9/0xec0 [ 22.022708][ T288] Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 b6 9d f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07 [ 22.042139][ T288] RSP: 0018:ffffc90000b27800 EFLAGS: 00010202 [ 22.048043][ T288] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88811e9f4f00 [ 22.055850][ T288] RDX: ffffc90000b27c78 RSI: 0000000000000000 RDI: 0000000000000000 [pid 287] exit_group(0) = ? [pid 290] <... futex resumed>) = ? [pid 290] +++ exited with 0 +++ [ 22.063661][ T288] RBP: ffffc90000b27930 R08: ffffffff81b42b9f R09: ffffed102391e2e5 [ 22.071478][ T288] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000164f17 [ 22.079284][ T288] R13: dffffc0000000000 R14: ffffc90000b27c40 R15: 0000000000004010 [ 22.087219][ T288] FS: 00007f1c5e8eb6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.095984][ T288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.102407][ T288] CR2: 0000000000000000 CR3: 000000011eb47000 CR4: 00000000003506b0 [ 22.110214][ T288] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.118028][ T288] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.125833][ T288] Call Trace: [ 22.128972][ T288] ? __die_body+0x62/0xb0 [ 22.133127][ T288] ? die_addr+0x9f/0xd0 [ 22.137125][ T288] ? exc_general_protection+0x3ff/0x490 [ 22.142507][ T288] ? lockref_put_return+0x1b7/0x210 [ 22.147541][ T288] ? asm_exc_general_protection+0x1e/0x30 [ 22.153294][ T288] ? step_into+0x15f/0xec0 [ 22.157736][ T288] ? step_into+0x1b9/0xec0 [ 22.161991][ T288] ? set_root+0x3d0/0x3d0 [ 22.166156][ T288] ? __kasan_check_write+0x14/0x20 [ 22.171102][ T288] ? up_read+0x14/0x90 [ 22.175010][ T288] walk_component+0x359/0x610 [ 22.179524][ T288] ? nd_alloc_stack+0xf0/0xf0 [ 22.184039][ T288] ? security_inode_permission+0xb0/0xf0 [ 22.189502][ T288] ? inode_permission+0xf1/0x500 [ 22.194278][ T288] ? fuse_do_getattr+0x7e0/0x7e0 [ 22.199052][ T288] link_path_walk+0x5c7/0xbd0 [ 22.203566][ T288] ? handle_lookup_down+0x130/0x130 [ 22.208599][ T288] path_lookupat+0xa0/0x450 [ 22.213034][ T288] filename_lookup+0x26a/0x6f0 [ 22.217623][ T288] ? hashlen_string+0x120/0x120 [ 22.222320][ T288] ? getname_flags+0x1fd/0x520 [ 22.226914][ T288] user_path_at_empty+0x40/0x50 [ 22.231595][ T288] do_readlinkat+0x114/0x3a0 [ 22.236022][ T288] ? cp_old_stat+0x900/0x900 [ 22.240472][ T288] ? debug_smp_processor_id+0x17/0x20 [ 22.245670][ T288] ? fpregs_assert_state_consistent+0xb6/0xe0 [ 22.251571][ T288] ? irqentry_exit_to_user_mode+0x2f/0x80 [ 22.257117][ T288] __x64_sys_readlink+0x7f/0x90 [ 22.261802][ T288] do_syscall_64+0x34/0x70 [ 22.266054][ T288] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 22.271785][ T288] RIP: 0033:0x7f1c5e9292f9 [ 22.276036][ T288] 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 [ 22.295682][ T288] RSP: 002b:00007f1c5e8eb218 EFLAGS: 00000246 ORIG_RAX: 0000000000000059 [ 22.303915][ T288] RAX: ffffffffffffffda RBX: 00007f1c5e9b23e8 RCX: 00007f1c5e9292f9 [ 22.311731][ T288] RDX: 0000000000001000 RSI: 0000000020000fc0 RDI: 0000000020000080 [ 22.319536][ T288] RBP: 00007f1c5e9b23e0 R08: 0000000000000000 R09: 0000000000000000 [ 22.327533][ T288] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1c5e980020 [ 22.335339][ T288] R13: 0030656c69662f2e R14: 65646f6d746f6f72 R15: 00007f1c5e980016 [ 22.343146][ T288] Modules linked in: [ 22.347157][ T288] ---[ end trace eddecedc666cf459 ]--- [ 22.352457][ T288] RIP: 0010:step_into+0x1b9/0xec0 [ 22.357289][ T288] Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 b6 9d f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07 [ 22.376894][ T288] RSP: 0018:ffffc90000b27800 EFLAGS: 00010202 [ 22.382756][ T288] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88811e9f4f00 [ 22.390548][ T288] RDX: ffffc90000b27c78 RSI: 0000000000000000 RDI: 0000000000000000 [ 22.398365][ T288] RBP: ffffc90000b27930 R08: ffffffff81b42b9f R09: ffffed102391e2e5 [ 22.406158][ T288] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000164f17 [ 22.413997][ T288] R13: dffffc0000000000 R14: ffffc90000b27c40 R15: 0000000000004010 [ 22.421795][ T288] FS: 00007f1c5e8eb6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.430661][ T288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.437053][ T288] CR2: 0000000000000000 CR3: 000000011eb47000 CR4: 00000000003506b0 [ 22.444900][ T288] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.452693][ T288] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.460517][ T288] Kernel panic - not syncing: Fatal exception [ 22.466775][ T288] Kernel Offset: disabled [ 22.470914][ T288] Rebooting in 86400 seconds..