./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2480560565 <...> Warning: Permanently added '10.128.0.231' (ED25519) to the list of known hosts. execve("./syz-executor2480560565", ["./syz-executor2480560565"], 0x7ffc12a65bb0 /* 10 vars */) = 0 brk(NULL) = 0x5555555c3000 brk(0x5555555c3d40) = 0x5555555c3d40 arch_prctl(ARCH_SET_FS, 0x5555555c33c0) = 0 set_tid_address(0x5555555c3690) = 292 set_robust_list(0x5555555c36a0, 24) = 0 rseq(0x5555555c3ce0, 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-executor2480560565", 4096) = 28 getrandom("\x3d\xe9\x65\x6b\xeb\x54\x2c\x67", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555555c3d40 brk(0x5555555e4d40) = 0x5555555e4d40 brk(0x5555555e5000) = 0x5555555e5000 mprotect(0x7ff1a8fa2000, 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(0x7ff1a8fa83ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7ff1a8f41360, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff1a8f329e0}, 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) = 0x7ff1a8ebd000 mprotect(0x7ff1a8ebe000, 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=0x7ff1a8edd990, parent_tid=0x7ff1a8edd990, exit_signal=0, stack=0x7ff1a8ebd000, stack_size=0x20300, tls=0x7ff1a8edd6c0} => {parent_tid=[293]}, 88) = 293 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7ff1a8fa83e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7ff1a8fa83ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 293 attached [pid 293] set_robust_list(0x7ff1a8edd9a0, 24) = 0 [pid 293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 293] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 293] futex(0x7ff1a8fa83ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7ff1a8fa83e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7ff1a8fa83ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [pid 293] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 293] futex(0x7ff1a8fa83ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7ff1a8fa83e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7ff1a8fa83ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [pid 293] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 293] futex(0x7ff1a8fa83ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7ff1a8fa83e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7ff1a8fa83ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [pid 293] 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\x24\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\xf3\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 293] futex(0x7ff1a8fa83ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7ff1a8fa83e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7ff1a8fa83ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [pid 293] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x21\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 293] futex(0x7ff1a8fa83ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7ff1a8fa83e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7ff1a8fa83ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [ 23.097835][ T30] audit: type=1400 audit(1690646049.124:66): avc: denied { execmem } for pid=292 comm="syz-executor248" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.117367][ T30] audit: type=1400 audit(1690646049.124:67): avc: denied { read write } for pid=292 comm="syz-executor248" name="fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 293] read(3, [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7ff1a8fa83fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff1a8e9c000 [pid 292] mprotect(0x7ff1a8e9d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 292] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff1a8ebc990, parent_tid=0x7ff1a8ebc990, exit_signal=0, stack=0x7ff1a8e9c000, stack_size=0x20300, tls=0x7ff1a8ebc6c0} => {parent_tid=[295]}, 88) = 295 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] futex(0x7ff1a8fa83f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 23.141789][ T30] audit: type=1400 audit(1690646049.124:68): avc: denied { open } for pid=292 comm="syz-executor248" path="/dev/fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 23.165628][ T30] audit: type=1400 audit(1690646049.124:69): avc: denied { mounton } for pid=292 comm="syz-executor248" 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 292] futex(0x7ff1a8fa83fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x7ff1a8ebc9a0, 24) = 0 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] creat("./file0/file0", 000 [pid 293] <... 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\x27\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 293] write(3, "\x99\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\x04\x00\x00\x00\x00\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\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 153) = 153 [pid 293] futex(0x7ff1a8fa83ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7ff1a8fa83e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 23.190205][ T30] audit: type=1400 audit(1690646049.124:70): avc: denied { mount } for pid=292 comm="syz-executor248" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 23.192211][ T295] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 23.223885][ T295] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 23.232616][ T295] CPU: 1 PID: 295 Comm: syz-executor248 Not tainted 5.15.120-syzkaller-00229-g748fd0d9ca0f #0 [ 23.243690][ T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 23.254824][ T295] RIP: 0010:fuse_atomic_open+0x26f/0x3750 [ 23.260553][ T295] Code: e0 40 4c 8b 64 24 48 75 07 e8 2d 9b 67 ff eb 37 48 8b 44 24 68 48 8d 58 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 03 2d a9 ff 48 83 3b 00 0f 84 a6 00 [ 23.280709][ T295] RSP: 0018:ffffc900007df2a0 EFLAGS: 00010202 [ 23.286598][ T295] RAX: 0000000000000007 RBX: 0000000000000039 RCX: dffffc0000000000 [pid 292] exit_group(0) = ? [pid 293] <... futex resumed>) = ? [pid 293] +++ exited with 0 +++ [ 23.294412][ T295] RDX: ffff88811e0862c0 RSI: 0000000000000040 RDI: 0000000000000000 [ 23.302434][ T295] RBP: ffffc900007df910 R08: ffffffff82084682 R09: fffff520000fbd9d [ 23.311211][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c54aaa8 [ 23.319312][ T295] R13: ffff88811def5800 R14: 1ffff920000fbe70 R15: 0000000000000009 [ 23.327207][ T295] FS: 00007ff1a8ebc6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 23.336066][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.343466][ T295] CR2: 0000000020000000 CR3: 000000011e020000 CR4: 00000000003506a0 [ 23.351420][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.359916][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.367902][ T295] Call Trace: [ 23.371260][ T295] [ 23.374112][ T295] ? __die_body+0x62/0xb0 [ 23.378229][ T295] ? die_addr+0x9f/0xd0 [ 23.382225][ T295] ? exc_general_protection+0x311/0x4b0 [ 23.387800][ T295] ? asm_exc_general_protection+0x27/0x30 [ 23.393338][ T295] ? fuse_atomic_open+0x242/0x3750 [ 23.399062][ T295] ? fuse_atomic_open+0x26f/0x3750 [ 23.404243][ T295] ? slab_post_alloc_hook+0x72/0x2c0 [ 23.409803][ T295] ? avc_alloc_node+0x8f/0x500 [ 23.414404][ T295] ? avc_alloc_node+0x8f/0x500 [ 23.418998][ T295] ? fuse_rename2+0x4470/0x4470 [ 23.423706][ T295] ? __kasan_check_write+0x14/0x20 [ 23.428758][ T295] ? __kasan_check_write+0x14/0x20 [ 23.433691][ T295] ? _raw_spin_lock_irqsave+0xf9/0x210 [ 23.438977][ T295] ? _raw_spin_lock+0x1b0/0x1b0 [ 23.443651][ T295] ? avc_xperms_populate+0x4c7/0x590 [ 23.449221][ T295] ? _raw_spin_unlock_irqrestore+0x5c/0x80 [ 23.454866][ T295] ? avc_compute_av+0x4f5/0x830 [ 23.459545][ T295] ? avc_has_perm_noaudit+0x2dd/0x430 [ 23.464843][ T295] ? avc_denied+0x1b0/0x1b0 [ 23.470048][ T295] ? avc_has_perm+0x16f/0x260 [ 23.474650][ T295] ? avc_has_perm_noaudit+0x430/0x430 [ 23.480199][ T295] ? selinux_determine_inode_label+0x29c/0x3b0 [ 23.486202][ T295] ? may_create+0x3d3/0x540 [ 23.490617][ T295] ? selinux_determine_inode_label+0x3b0/0x3b0 [ 23.496807][ T295] ? make_kgid+0x6f0/0x6f0 [ 23.501464][ T295] ? selinux_inode_create+0x22/0x30 [ 23.506526][ T295] ? security_inode_create+0xbc/0x100 [ 23.511800][ T295] ? fuse_rename2+0x4470/0x4470 [ 23.516570][ T295] path_openat+0xfde/0x2f40 [ 23.520915][ T295] ? do_filp_open+0x460/0x460 [ 23.528125][ T295] do_filp_open+0x21c/0x460 [ 23.532459][ T295] ? vfs_tmpfile+0x2c0/0x2c0 [ 23.537233][ T295] do_sys_openat2+0x13f/0x830 [ 23.541977][ T295] ? ptrace_stop+0x6eb/0xa90 [ 23.546872][ T295] ? do_sys_open+0x220/0x220 [ 23.552308][ T295] ? _raw_spin_unlock_irq+0x4e/0x70 [ 23.557606][ T295] ? ptrace_notify+0x24c/0x350 [ 23.562185][ T295] __x64_sys_creat+0x11f/0x160 [ 23.567031][ T295] ? __x64_compat_sys_openat+0x290/0x290 [ 23.572497][ T295] ? syscall_enter_from_user_mode+0x70/0x1b0 [ 23.578784][ T295] do_syscall_64+0x3d/0xb0 [ 23.583081][ T295] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.588811][ T295] RIP: 0033:0x7ff1a8f1b4b9 [ 23.593432][ T295] 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 [ 23.613291][ T295] RSP: 002b:00007ff1a8ebc218 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 23.621622][ T295] RAX: ffffffffffffffda RBX: 00007ff1a8fa83f8 RCX: 00007ff1a8f1b4b9 [ 23.629647][ T295] RDX: 00007ff1a8ef8c46 RSI: 0000000000000000 RDI: 0000000020000000 [ 23.637541][ T295] RBP: 00007ff1a8fa83f0 R08: 00007fff1c63de37 R09: 0000000000000000 [ 23.646439][ T295] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff1a8f75024 [ 23.654351][ T295] R13: 000000000000006e R14: 0030656c69662f30 R15: 2f30656c69662f2e [ 23.662336][ T295] [ 23.665285][ T295] Modules linked in: [ 23.669735][ T295] ---[ end trace 21211c4e576fe9fb ]--- [ 23.675111][ T295] RIP: 0010:fuse_atomic_open+0x26f/0x3750 [ 23.681146][ T295] Code: e0 40 4c 8b 64 24 48 75 07 e8 2d 9b 67 ff eb 37 48 8b 44 24 68 48 8d 58 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 03 2d a9 ff 48 83 3b 00 0f 84 a6 00 [ 23.701460][ T295] RSP: 0018:ffffc900007df2a0 EFLAGS: 00010202 [ 23.707375][ T295] RAX: 0000000000000007 RBX: 0000000000000039 RCX: dffffc0000000000 [ 23.715313][ T295] RDX: ffff88811e0862c0 RSI: 0000000000000040 RDI: 0000000000000000 [ 23.723263][ T295] RBP: ffffc900007df910 R08: ffffffff82084682 R09: fffff520000fbd9d [ 23.731303][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c54aaa8 [ 23.740185][ T295] R13: ffff88811def5800 R14: 1ffff920000fbe70 R15: 0000000000000009 [ 23.748571][ T295] FS: 00007ff1a8ebc6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 23.757794][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.764162][ T295] CR2: 0000000020000000 CR3: 000000011e020000 CR4: 00000000003506a0 [ 23.772093][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.779903][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.788010][ T295] Kernel panic - not syncing: Fatal exception [ 23.794101][ T295] Kernel Offset: disabled [ 23.798760][ T295] Rebooting in 86400 seconds..