./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3378794759 <...> Warning: Permanently added '10.128.0.135' (ED25519) to the list of known hosts. execve("./syz-executor3378794759", ["./syz-executor3378794759"], 0x7ffe56e69f10 /* 10 vars */) = 0 brk(NULL) = 0x555556329000 brk(0x555556329d40) = 0x555556329d40 arch_prctl(ARCH_SET_FS, 0x5555563293c0) = 0 set_tid_address(0x555556329690) = 287 set_robust_list(0x5555563296a0, 24) = 0 rseq(0x555556329ce0, 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-executor3378794759", 4096) = 28 getrandom("\x3f\x74\xd5\x2b\x14\x75\xd8\xab", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556329d40 brk(0x55555634ad40) = 0x55555634ad40 brk(0x55555634b000) = 0x55555634b000 mprotect(0x7f61b9578000, 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(0x7f61b957e3cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f61b9514670, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f61b9505cf0}, 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) = 0x7f61b948d000 mprotect(0x7f61b948e000, 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=0x7f61b94ad990, parent_tid=0x7f61b94ad990, exit_signal=0, stack=0x7f61b948d000, stack_size=0x20300, tls=0x7f61b94ad6c0}./strace-static-x86_64: Process 288 attached [pid 288] set_robust_list(0x7f61b94ad9a0, 24) = 0 [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] futex(0x7f61b957e3c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 287] <... clone3 resumed> => {parent_tid=[288]}, 88) = 288 [pid 287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 287] futex(0x7f61b957e3c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 288] <... futex resumed>) = 0 [pid 288] openat(AT_FDCWD, "/dev/fuse", O_RDWR [pid 287] futex(0x7f61b957e3cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... openat resumed>) = 3 [pid 288] futex(0x7f61b957e3cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 288] futex(0x7f61b957e3c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f61b957e3c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 288] <... futex resumed>) = 0 [pid 287] futex(0x7f61b957e3cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] mkdir("./file0", 0777) = 0 [pid 288] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [ 21.676988][ T24] audit: type=1400 audit(1719606294.520:66): avc: denied { execmem } for pid=287 comm="syz-executor337" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.686409][ T24] audit: type=1400 audit(1719606294.530:67): avc: denied { read write } for pid=287 comm="syz-executor337" 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 [ 21.691247][ T24] audit: type=1400 audit(1719606294.530:68): avc: denied { open } for pid=287 comm="syz-executor337" 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 [ 21.697103][ T24] audit: type=1400 audit(1719606294.540:69): avc: denied { mounton } for pid=287 comm="syz-executor337" 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] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 287] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7f61b957e3dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f61b946c000 [pid 287] mprotect(0x7f61b946d000, 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=0x7f61b948c990, parent_tid=0x7f61b948c990, exit_signal=0, stack=0x7f61b946c000, stack_size=0x20300, tls=0x7f61b948c6c0} => {parent_tid=[290]}, 88) = 290 [pid 287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 287] futex(0x7f61b957e3d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f61b957e3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x7f61b948c9a0, 24) = 0 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] 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", 8192) = 56 [pid 290] write(3, "\x14\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00", 20) = 20 [pid 290] futex(0x7f61b957e3dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f61b957e3d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f61b957e3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] read(3, "\x30\x00\x00\x00\x1b\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\x00\x80\x01\x00\x00\x00\x00\x00", 8192) = 48 [pid 290] write(3, "\x20\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", 32 [pid 288] <... openat resumed>) = 4 [pid 288] chdir("./file0" [pid 290] <... write resumed>) = 32 [pid 290] futex(0x7f61b957e3dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f61b957e3d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f61b957e3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] read(3, "\x30\x00\x00\x00\x22\x00\x00\x00\x06\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\x01\x00\x00\x00\x00\x00\x00\x00", 8192) = 48 [pid 290] write(3, "\x10\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00", 16 [pid 288] <... chdir resumed>) = 0 [pid 288] futex(0x7f61b957e3cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f61b957e3c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 290] <... write resumed>) = 16 [pid 290] futex(0x7f61b957e3dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f61b957e3c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 288] <... futex resumed>) = 0 [pid 287] futex(0x7f61b957e3cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] read(3, [pid 290] <... futex resumed>) = 1 [ 21.720402][ T24] audit: type=1400 audit(1719606294.540:70): avc: denied { mount } for pid=287 comm="syz-executor337" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 290] futex(0x7f61b957e3d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 287] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7f61b957e3cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7f61b957e3d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] futex(0x7f61b957e3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 0 [pid 290] open("./file0/../file0", O_ACCMODE|O_CREAT|O_DIRECT|O_LARGEFILE|O_NOATIME|0x3c, 002 [pid 288] <... read resumed>"\x2e\x00\x00\x00\x01\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x22\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 288] write(3, "\x90\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 144) = 144 [pid 288] futex(0x7f61b957e3cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f61b957e3c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 287] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7f61b957e3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7f61b957e3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [ 21.801566][ T290] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 21.813828][ T290] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 21.822546][ T290] CPU: 1 PID: 290 Comm: syz-executor337 Not tainted 5.10.216-syzkaller-00510-ga4a2b7a82ee4 #0 [ 21.832906][ T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 21.842814][ T290] RIP: 0010:step_into+0x1b9/0xec0 [ 21.847675][ T290] Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 16 97 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 [ 21.867620][ T290] RSP: 0018:ffffc90000b675c0 EFLAGS: 00010202 [ 21.873520][ T290] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88811f4393c0 [ 21.881327][ T290] RDX: ffffc90000b67bd8 RSI: 0000000000000000 RDI: 0000000000000000 [ 21.889352][ T290] RBP: ffffc90000b676f0 R08: ffffffff81b4a74f R09: ffffed1023924255 [ 21.897157][ T290] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200016cecf [ 21.904967][ T290] R13: dffffc0000000000 R14: ffffc90000b67ba0 R15: 0000000000000011 [ 21.912975][ T290] FS: 00007f61b948c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 21.921775][ T290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.928160][ T290] CR2: 000000002000b000 CR3: 000000011f2ba000 CR4: 00000000003506a0 [ 21.936234][ T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.944037][ T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [pid 287] exit_group(0) = ? [pid 288] <... futex resumed>) = ? [pid 288] +++ exited with 0 +++ [ 21.951941][ T290] Call Trace: [ 21.955073][ T290] ? __die_body+0x62/0xb0 [ 21.959322][ T290] ? die_addr+0x9f/0xd0 [ 21.963430][ T290] ? exc_general_protection+0x3ff/0x490 [ 21.968860][ T290] ? asm_exc_general_protection+0x1e/0x30 [ 21.974366][ T290] ? step_into+0x15f/0xec0 [ 21.978602][ T290] ? step_into+0x1b9/0xec0 [ 21.982875][ T290] ? set_root+0x3d0/0x3d0 [ 21.987032][ T290] ? __kasan_check_write+0x14/0x20 [ 21.992060][ T290] ? up_read+0x14/0x90 [ 21.995977][ T290] walk_component+0x359/0x610 [ 22.000502][ T290] ? nd_alloc_stack+0xf0/0xf0 [ 22.005011][ T290] ? security_inode_permission+0xb0/0xf0 [ 22.010468][ T290] ? inode_permission+0xf1/0x500 [ 22.015237][ T290] ? fuse_do_getattr+0x7a0/0x7a0 [ 22.020091][ T290] link_path_walk+0x5c7/0xbd0 [ 22.024618][ T290] ? handle_lookup_down+0x130/0x130 [ 22.030030][ T290] path_openat+0x26a/0x3000 [ 22.034337][ T290] ? __stack_depot_save+0x468/0x4d0 [ 22.039362][ T290] ? kmem_cache_alloc+0x168/0x2e0 [ 22.044316][ T290] ? __x64_sys_open+0x221/0x270 [ 22.048997][ T290] ? do_syscall_64+0x34/0x70 [ 22.053520][ T290] ? entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 22.059409][ T290] ? do_filp_open+0x460/0x460 [ 22.063930][ T290] do_filp_open+0x21c/0x460 [ 22.068259][ T290] ? vfs_tmpfile+0x2b0/0x2b0 [ 22.072690][ T290] ? get_unused_fd_flags+0x94/0xa0 [ 22.077635][ T290] do_sys_openat2+0x13f/0x6f0 [ 22.082148][ T290] ? cgroup_leave_frozen+0x164/0x2c0 [ 22.087269][ T290] ? ptrace_stop+0x6dc/0xa30 [ 22.091780][ T290] ? do_sys_open+0x220/0x220 [ 22.096376][ T290] ? _raw_spin_unlock_irq+0x4e/0x70 [ 22.101459][ T290] ? ptrace_notify+0x24c/0x350 [ 22.106124][ T290] __x64_sys_open+0x221/0x270 [ 22.110727][ T290] ? do_sys_openat2+0x6f0/0x6f0 [ 22.115423][ T290] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 22.121254][ T290] do_syscall_64+0x34/0x70 [ 22.125498][ T290] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 22.131529][ T290] RIP: 0033:0x7f61b94ee799 [ 22.135846][ T290] 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 [ 22.157196][ T290] RSP: 002b:00007f61b948c218 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 22.165442][ T290] RAX: ffffffffffffffda RBX: 00007f61b957e3d8 RCX: 00007f61b94ee799 [ 22.173258][ T290] RDX: 0000000000000002 RSI: 000000000004c07f RDI: 0000000020000300 [ 22.181220][ T290] RBP: 00007f61b957e3d0 R08: 0000000000000000 R09: 0000000000000000 [ 22.189035][ T290] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f61b954b0fc [ 22.196853][ T290] R13: 000000000000006e R14: 00007f61b95470f0 R15: 00007f61b95490f8 [ 22.204659][ T290] Modules linked in: [ 22.208556][ T290] ---[ end trace 0ec4af64f64d0609 ]--- [ 22.213853][ T290] RIP: 0010:step_into+0x1b9/0xec0 [ 22.218795][ T290] Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 16 97 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 [ 22.238321][ T290] RSP: 0018:ffffc90000b675c0 EFLAGS: 00010202 [ 22.244722][ T290] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88811f4393c0 [ 22.252700][ T290] RDX: ffffc90000b67bd8 RSI: 0000000000000000 RDI: 0000000000000000 [ 22.260548][ T290] RBP: ffffc90000b676f0 R08: ffffffff81b4a74f R09: ffffed1023924255 [ 22.268696][ T290] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200016cecf [ 22.276528][ T290] R13: dffffc0000000000 R14: ffffc90000b67ba0 R15: 0000000000000011 [ 22.284454][ T290] FS: 00007f61b948c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.293407][ T290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.299886][ T290] CR2: 000000002000b000 CR3: 000000011f2ba000 CR4: 00000000003506a0 [ 22.307724][ T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.315616][ T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.323438][ T290] Kernel panic - not syncing: Fatal exception [ 22.329855][ T290] Kernel Offset: disabled [ 22.334052][ T290] Rebooting in 86400 seconds..