./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor106103252 <...> Warning: Permanently added '10.128.1.99' (ED25519) to the list of known hosts. execve("./syz-executor106103252", ["./syz-executor106103252"], 0x7ffea6859ef0 /* 10 vars */) = 0 brk(NULL) = 0x555556713000 brk(0x555556713d40) = 0x555556713d40 arch_prctl(ARCH_SET_FS, 0x5555567133c0) = 0 set_tid_address(0x555556713690) = 294 set_robust_list(0x5555567136a0, 24) = 0 rseq(0x555556713ce0, 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-executor106103252", 4096) = 27 getrandom("\x65\x87\xcc\x67\x5e\xcb\x41\xda", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556713d40 brk(0x555556734d40) = 0x555556734d40 brk(0x555556735000) = 0x555556735000 mprotect(0x7fc5bfbf9000, 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(0x7fc5bfbff3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fc5bfb98360, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fc5bfb899e0}, 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) = 0x7fc5bfb14000 mprotect(0x7fc5bfb15000, 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=0x7fc5bfb34990, parent_tid=0x7fc5bfb34990, exit_signal=0, stack=0x7fc5bfb14000, stack_size=0x20300, tls=0x7fc5bfb346c0} => {parent_tid=[295]}, 88) = 295 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fc5bfbff3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fc5bfbff3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x7fc5bfb349a0, 24) = 0 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 295] futex(0x7fc5bfbff3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7fc5bfbff3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7fc5bfbff3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 295] futex(0x7fc5bfbff3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7fc5bfbff3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7fc5bfbff3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 295] futex(0x7fc5bfbff3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7fc5bfbff3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7fc5bfbff3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] 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\x25\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x73\x01\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 295] futex(0x7fc5bfbff3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7fc5bfbff3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7fc5bfbff3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] 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 295] futex(0x7fc5bfbff3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7fc5bfbff3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7fc5bfbff3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] read(3, [pid 294] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 294] futex(0x7fc5bfbff3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 294] futex(0x7fc5bfbff3fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc5bfaf3000 [pid 294] mprotect(0x7fc5bfaf4000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 294] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 294] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fc5bfb13990, parent_tid=0x7fc5bfb13990, exit_signal=0, stack=0x7fc5bfaf3000, stack_size=0x20300, tls=0x7fc5bfb136c0}./strace-static-x86_64: Process 297 attached => {parent_tid=[297]}, 88) = 297 [pid 294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 294] futex(0x7fc5bfbff3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7fc5bfbff3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 297] set_robust_list(0x7fc5bfb139a0, 24) = 0 [pid 297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 297] creat("./file0/file0", 000 [pid 295] <... 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\x29\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 295] 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 [ 19.992594][ T28] audit: type=1400 audit(1689552056.312:66): avc: denied { execmem } for pid=294 comm="syz-executor106" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 19.997148][ T28] audit: type=1400 audit(1689552056.322:67): avc: denied { read write } for pid=294 comm="syz-executor106" 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 [ 20.003492][ T28] audit: type=1400 audit(1689552056.322:68): avc: denied { open } for pid=294 comm="syz-executor106" 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 [ 20.006939][ T28] audit: type=1400 audit(1689552056.322:69): avc: denied { mounton } for pid=294 comm="syz-executor106" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 20.009986][ T28] audit: type=1400 audit(1689552056.322:70): avc: denied { mount } for pid=294 comm="syz-executor106" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 295] futex(0x7fc5bfbff3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 20.053927][ T297] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 20.065451][ T297] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 20.073691][ T297] CPU: 1 PID: 297 Comm: syz-executor106 Not tainted 6.1.25-syzkaller-00028-gf6707f352b54 #0 [ 20.083588][ T297] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 [ 20.093484][ T297] RIP: 0010:fuse_atomic_open+0x166/0x3a0 [ 20.098950][ T297] Code: 45 fe 8b 5d c4 89 de 83 e6 40 31 ff e8 f3 fc 60 ff 89 d8 83 e0 40 75 07 e8 37 f9 60 ff eb 25 49 8d 5f 30 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 5b 15 a7 ff 48 83 3b 00 74 24 e8 [ 20.118392][ T297] RSP: 0018:ffffc90000e678f8 EFLAGS: 00010202 [ 20.124294][ T297] RAX: 0000000000000007 RBX: 0000000000000039 RCX: ffff88811cfcbcc0 [ 20.132105][ T297] RDX: ffff88811cfcbcc0 RSI: 0000000000000040 RDI: 0000000000000000 [ 20.139924][ T297] RBP: ffffc90000e67950 R08: ffffffff8213ebcd R09: fffff520001cce69 [ 20.147728][ T297] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 20.155540][ T297] R13: ffff88810bebd540 R14: 0000000000000009 R15: 0000000000000009 [ 20.163348][ T297] FS: 00007fc5bfb136c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 20.172115][ T297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.178540][ T297] CR2: 0000000020000000 CR3: 0000000121e78000 CR4: 00000000003506a0 [ 20.186355][ T297] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.194162][ T297] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.201974][ T297] Call Trace: [ 20.205098][ T297] [ 20.207877][ T297] path_openat+0xf52/0x2d60 [ 20.212215][ T297] ? fuse_rename2+0x4470/0x4470 [ 20.216904][ T297] ? do_filp_open+0x480/0x480 [ 20.221416][ T297] do_filp_open+0x230/0x480 [ 20.225756][ T297] ? vfs_tmpfile+0x480/0x480 [ 20.230181][ T297] ? alloc_fd+0x4fa/0x5a0 [ 20.234357][ T297] do_sys_openat2+0x13f/0x850 [ 20.238860][ T297] ? ptrace_stop+0x709/0x930 [ 20.243286][ T297] ? do_sys_open+0x220/0x220 [ 20.247712][ T297] ? _raw_spin_unlock_irq+0x4d/0x70 [ 20.252746][ T297] ? ptrace_notify+0x249/0x350 [ 20.257347][ T297] __x64_sys_creat+0x11f/0x160 [ 20.261946][ T297] ? __x64_compat_sys_openat+0x290/0x290 [ 20.267414][ T297] ? fpregs_assert_state_consistent+0xb6/0xe0 [ 20.273317][ T297] ? exit_to_user_mode_prepare+0x39/0xa0 [ 20.278787][ T297] ? syscall_enter_from_user_mode+0x6a/0x190 [ 20.284603][ T297] do_syscall_64+0x3d/0xb0 [ 20.288855][ T297] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 20.294581][ T297] RIP: 0033:0x7fc5bfb724b9 [ 20.298836][ T297] 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 [ 20.318277][ T297] RSP: 002b:00007fc5bfb13218 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 20.326522][ T297] RAX: ffffffffffffffda RBX: 00007fc5bfbff3f8 RCX: 00007fc5bfb724b9 [ 20.334331][ T297] RDX: 00007fc5bfb4fc46 RSI: 0000000000000000 RDI: 0000000020000000 [ 20.342144][ T297] RBP: 00007fc5bfbff3f0 R08: 00007ffcb52a7a07 R09: 0000000000000000 [pid 295] futex(0x7fc5bfbff3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 294] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 20.349957][ T297] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc5bfbcc024 [ 20.357768][ T297] R13: 000000000000006e R14: 0030656c69662f30 R15: 2f30656c69662f2e [ 20.365587][ T297] [ 20.368442][ T297] Modules linked in: [ 20.372635][ T297] ---[ end trace 0000000000000000 ]--- [ 20.378152][ T297] RIP: 0010:fuse_atomic_open+0x166/0x3a0 [ 20.383659][ T297] Code: 45 fe 8b 5d c4 89 de 83 e6 40 31 ff e8 f3 fc 60 ff 89 d8 83 e0 40 75 07 e8 37 f9 60 ff eb 25 49 8d 5f 30 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 5b 15 a7 ff 48 83 3b 00 74 24 e8 [ 20.403119][ T297] RSP: 0018:ffffc90000e678f8 EFLAGS: 00010202 [ 20.409065][ T297] RAX: 0000000000000007 RBX: 0000000000000039 RCX: ffff88811cfcbcc0 [ 20.416873][ T297] RDX: ffff88811cfcbcc0 RSI: 0000000000000040 RDI: 0000000000000000 [ 20.424626][ T297] RBP: ffffc90000e67950 R08: ffffffff8213ebcd R09: fffff520001cce69 [ 20.432500][ T297] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 20.440271][ T297] R13: ffff88810bebd540 R14: 0000000000000009 R15: 0000000000000009 [ 20.448107][ T297] FS: 00007fc5bfb136c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 20.456837][ T297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.463240][ T297] CR2: 0000000020000000 CR3: 0000000121e78000 CR4: 00000000003506a0 [ 20.471113][ T297] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.478894][ T297] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.486726][ T297] Kernel panic - not syncing: Fatal exception [ 20.492752][ T297] Kernel Offset: disabled [ 20.496870][ T297] Rebooting in 86400 seconds..