./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2855257074 <...> Warning: Permanently added '10.128.0.78' (ED25519) to the list of known hosts. execve("./syz-executor2855257074", ["./syz-executor2855257074"], 0x7fff0a5797a0 /* 10 vars */) = 0 brk(NULL) = 0x55555705d000 brk(0x55555705dd40) = 0x55555705dd40 arch_prctl(ARCH_SET_FS, 0x55555705d3c0) = 0 set_tid_address(0x55555705d690) = 286 set_robust_list(0x55555705d6a0, 24) = 0 rseq(0x55555705dce0, 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-executor2855257074", 4096) = 28 getrandom("\xa1\xf7\xea\x4d\x90\x41\xd9\xbe", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555705dd40 brk(0x55555707ed40) = 0x55555707ed40 brk(0x55555707f000) = 0x55555707f000 mprotect(0x7f2b6a577000, 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(0x7f2b6a57d40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f2b6a516460, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f2b6a507ae0}, 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) = 0x7f2b6a492000 mprotect(0x7f2b6a493000, 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=0x7f2b6a4b2990, parent_tid=0x7f2b6a4b2990, exit_signal=0, stack=0x7f2b6a492000, stack_size=0x20300, tls=0x7f2b6a4b26c0}./strace-static-x86_64: Process 287 attached => {parent_tid=[287]}, 88) = 287 [pid 287] set_robust_list(0x7f2b6a4b29a0, 24 [pid 286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 287] <... set_robust_list resumed>) = 0 [pid 286] futex(0x7f2b6a57d408, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] rt_sigprocmask(SIG_SETMASK, [], [pid 286] <... futex resumed>) = 0 [pid 287] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 286] futex(0x7f2b6a57d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 287] futex(0x7f2b6a57d40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 287] <... futex resumed>) = 1 [pid 286] futex(0x7f2b6a57d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000 [pid 286] futex(0x7f2b6a57d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... openat resumed>) = 3 [pid 287] futex(0x7f2b6a57d40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7f2b6a57d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7f2b6a57d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... futex resumed>) = 1 [pid 287] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 287] futex(0x7f2b6a57d40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7f2b6a57d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7f2b6a57d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... futex resumed>) = 1 [pid 287] 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 287] futex(0x7f2b6a57d40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7f2b6a57d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7f2b6a57d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... futex resumed>) = 1 [pid 287] 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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 287] futex(0x7f2b6a57d40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7f2b6a57d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7f2b6a57d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... futex resumed>) = 1 [ 19.586015][ T24] audit: type=1400 audit(1696321732.869:66): avc: denied { execmem } for pid=286 comm="syz-executor285" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 19.590964][ T24] audit: type=1400 audit(1696321732.879:67): avc: denied { read write } for pid=286 comm="syz-executor285" 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 [ 19.594542][ T24] audit: type=1400 audit(1696321732.879:68): avc: denied { open } for pid=286 comm="syz-executor285" 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 [ 19.598226][ T24] audit: type=1400 audit(1696321732.879:69): avc: denied { mounton } for pid=286 comm="syz-executor285" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 19.601467][ T24] audit: type=1400 audit(1696321732.879:70): avc: denied { mount } for pid=286 comm="syz-executor285" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 287] read(3, [pid 286] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7f2b6a57d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7f2b6a57d41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2b6a471000 [pid 286] mprotect(0x7f2b6a472000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 286] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 286] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f2b6a491990, parent_tid=0x7f2b6a491990, exit_signal=0, stack=0x7f2b6a471000, stack_size=0x20300, tls=0x7f2b6a4916c0}./strace-static-x86_64: Process 289 attached => {parent_tid=[289]}, 88) = 289 [pid 286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 286] futex(0x7f2b6a57d418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7f2b6a57d41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] set_robust_list(0x7f2b6a4919a0, 24) = 0 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] openat(AT_FDCWD, "./file0", O_RDONLY [pid 287] <... read resumed>"\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\x21\x01\x00\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x00\x00\x00", 8192) = 48 [pid 287] 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) = 32 [pid 287] futex(0x7f2b6a57d40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f2b6a57d408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... openat resumed>) = 4 [pid 289] futex(0x7f2b6a57d41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7f2b6a57d408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] <... futex resumed>) = 0 [pid 286] futex(0x7f2b6a57d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] mknodat(4, "./file0", 0200 [pid 289] <... futex resumed>) = 1 [pid 289] futex(0x7f2b6a57d418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7f2b6a57d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7f2b6a57d418, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] futex(0x7f2b6a57d41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 0 [pid 289] read(3, "\x2e\x00\x00\x00\x01\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\x1f\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8224) = 46 [pid 289] futex(0x7f2b6a57d41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7f2b6a57d418, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 1 [pid 286] <... futex resumed>) = 0 [pid 289] write(3, "\xa8\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 168 [pid 286] futex(0x7f2b6a57d41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... write resumed>) = 168 [pid 289] futex(0x7f2b6a57d41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 289] <... futex resumed>) = 1 [ 19.706321][ T287] general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN [ 19.717856][ T287] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 19.726110][ T287] CPU: 1 PID: 287 Comm: syz-executor285 Not tainted 5.10.194-syzkaller-00508-ga27512601c2d #0 [ 19.736256][ T287] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 19.746391][ T287] RIP: 0010:filename_create+0x225/0x750 [ 19.751729][ T287] Code: 89 e2 e8 fe 96 ff ff 49 89 c4 48 3d 01 f0 ff ff 72 07 e8 3e 06 b7 ff eb 5f 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 70 04 00 00 4c 89 64 24 30 45 8b 24 24 bb [ 19.771161][ T287] RSP: 0018:ffffc90000ba7d00 EFLAGS: 00010206 [ 19.777060][ T287] RAX: 0000000000000003 RBX: ffff88811c0897a0 RCX: dffffc0000000000 [ 19.784869][ T287] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 19.792680][ T287] RBP: ffffc90000ba7df0 R08: ffffffff81b62ffb R09: ffffed10238112fa [ 19.800495][ T287] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000018 [ 19.808305][ T287] R13: 1ffff92000174fd1 R14: ffffc90000ba7e88 R15: 1ffff92000174fd0 [ 19.816116][ T287] FS: 00007f2b6a4b26c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 19.824881][ T287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.831475][ T287] CR2: 000055cbd6f11118 CR3: 000000011eaa4000 CR4: 00000000003506a0 [ 19.839292][ T287] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.847098][ T287] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.854909][ T287] Call Trace: [ 19.858045][ T287] ? __die_body+0x62/0xb0 [ 19.862204][ T287] ? die_addr+0x9f/0xd0 [ 19.866196][ T287] ? exc_general_protection+0x3ff/0x490 [ 19.871581][ T287] ? asm_exc_general_protection+0x1e/0x30 [ 19.877133][ T287] ? dput+0x8b/0x310 [ 19.880863][ T287] ? filename_create+0x225/0x750 [ 19.885641][ T287] ? __check_object_size+0x2e6/0x3c0 [ 19.890760][ T287] ? kern_path_create+0x40/0x40 [ 19.895449][ T287] do_mknodat+0x187/0x450 [ 19.899616][ T287] ? may_open+0x3f0/0x3f0 [ 19.903780][ T287] ? fpu__clear_all+0x20/0x20 [ 19.908293][ T287] __x64_sys_mknodat+0x9b/0xb0 [ 19.912899][ T287] do_syscall_64+0x34/0x70 [ 19.917145][ T287] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 19.922869][ T287] RIP: 0033:0x7f2b6a4f05b9 [ 19.927129][ T287] 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 [ 19.946567][ T287] RSP: 002b:00007f2b6a4b2218 EFLAGS: 00000246 ORIG_RAX: 0000000000000103 [ 19.954811][ T287] RAX: ffffffffffffffda RBX: 00007f2b6a57d408 RCX: 00007f2b6a4f05b9 [ 19.962622][ T287] RDX: 0000000000000080 RSI: 00000000200000c0 RDI: 0000000000000004 [ 19.970446][ T287] RBP: 00007f2b6a57d400 R08: 0000000000000000 R09: 0000000000000000 [ 19.978251][ T287] R10: 0000000000000700 R11: 0000000000000246 R12: 00007f2b6a54a024 [ 19.986072][ T287] R13: 0030656c69662f2e R14: 0000000000000003 R15: 00007f2b6a54a04c [ 19.993871][ T287] Modules linked in: [ 19.998800][ T287] ---[ end trace b429c0df82945d42 ]--- [ 20.004082][ T287] RIP: 0010:filename_create+0x225/0x750 [ 20.009573][ T287] Code: 89 e2 e8 fe 96 ff ff 49 89 c4 48 3d 01 f0 ff ff 72 07 e8 3e 06 b7 ff eb 5f 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 70 04 00 00 4c 89 64 24 30 45 8b 24 24 bb [ 20.028993][ T287] RSP: 0018:ffffc90000ba7d00 EFLAGS: 00010206 [ 20.034876][ T287] RAX: 0000000000000003 RBX: ffff88811c0897a0 RCX: dffffc0000000000 [ 20.042887][ T287] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [pid 289] futex(0x7f2b6a57d418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] exit_group(0) = ? [pid 289] <... futex resumed>) = ? [pid 289] +++ exited with 0 +++ [ 20.050795][ T287] RBP: ffffc90000ba7df0 R08: ffffffff81b62ffb R09: ffffed10238112fa [ 20.058644][ T287] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000018 [ 20.066535][ T287] R13: 1ffff92000174fd1 R14: ffffc90000ba7e88 R15: 1ffff92000174fd0 [ 20.074332][ T287] FS: 00007f2b6a4b26c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 20.083566][ T287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.090208][ T287] CR2: 000055cbd6f11118 CR3: 000000011eaa4000 CR4: 00000000003506a0 [ 20.098056][ T287] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.106362][ T287] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.114139][ T287] Kernel panic - not syncing: Fatal exception [ 20.120341][ T287] Kernel Offset: disabled [ 20.124470][ T287] Rebooting in 86400 seconds..