./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3669530065 <...> Warning: Permanently added '10.128.0.98' (ECDSA) to the list of known hosts. execve("./syz-executor3669530065", ["./syz-executor3669530065"], 0x7ffd181fc320 /* 10 vars */) = 0 brk(NULL) = 0x55555608a000 brk(0x55555608ac40) = 0x55555608ac40 arch_prctl(ARCH_SET_FS, 0x55555608a300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x55555608a5d0) = 292 set_robust_list(0x55555608a5e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7f3dcc1af2b0, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7f3dcc1af980}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f3dcc1af350, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f3dcc1af980}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3669530065", 4096) = 28 brk(0x5555560abc40) = 0x5555560abc40 brk(0x5555560ac000) = 0x5555560ac000 mprotect(0x7f3dcc271000, 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(0x7f3dcc2774cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f3dcc17f000 mprotect(0x7f3dcc180000, 131072, PROT_READ|PROT_WRITE) = 0 clone(child_stack=0x7f3dcc19f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[293], tls=0x7f3dcc19f700, child_tidptr=0x7f3dcc19f9d0) = 293 futex(0x7f3dcc2774c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f3dcc2774cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 293 attached [pid 293] set_robust_list(0x7f3dcc19f9e0, 24) = 0 [pid 293] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 293] futex(0x7f3dcc2774cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 293] <... futex resumed>) = 1 [pid 292] futex(0x7f3dcc2774c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f3dcc2774cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 293] futex(0x7f3dcc2774cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f3dcc2774c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f3dcc2774cc, 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(0x7f3dcc2774cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f3dcc2774c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f3dcc2774cc, 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(0x7f3dcc2774cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f3dcc2774c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f3dcc2774cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [pid 293] read(3, [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f3dcc2774cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f3dcc2774dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f3dcc15e000 [pid 292] mprotect(0x7f3dcc15f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 292] clone(child_stack=0x7f3dcc17e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[295], tls=0x7f3dcc17e700, child_tidptr=0x7f3dcc17e9d0) = 295 [pid 292] futex(0x7f3dcc2774d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f3dcc2774dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x7f3dcc17e9e0, 24) = 0 [pid 295] 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\x92\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\x00\x00\x00\x00\x00\x00", 80) = 80 [pid 295] futex(0x7f3dcc2774dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f3dcc2774d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f3dcc2774dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] openat(AT_FDCWD, "./file0/file0", O_RDONLY [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, "\x94\x00\x00\x00\x00\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\xfc\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfc\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 148) = 148 [pid 293] futex(0x7f3dcc2774cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 20.454919][ T30] audit: type=1400 audit(1684633937.201:66): avc: denied { execmem } for pid=292 comm="syz-executor366" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.458742][ T30] audit: type=1400 audit(1684633937.211:67): avc: denied { read write } for pid=292 comm="syz-executor366" 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 [ 20.463593][ T30] audit: type=1400 audit(1684633937.211:68): avc: denied { open } for pid=292 comm="syz-executor366" 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 [ 20.467777][ T30] audit: type=1400 audit(1684633937.211:69): avc: denied { mounton } for pid=292 comm="syz-executor366" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 20.471427][ T30] audit: type=1400 audit(1684633937.211:70): avc: denied { mount } for pid=292 comm="syz-executor366" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 20.515233][ T295] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 20.526777][ T295] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 20.535020][ T295] CPU: 1 PID: 295 Comm: syz-executor366 Not tainted 5.15.106-syzkaller-00249-g19c0ed55a470 #0 [ 20.545089][ T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 [ 20.554982][ T295] RIP: 0010:path_openat+0x185b/0x2f40 [ 20.560190][ T295] Code: b6 04 28 84 c0 0f 85 ef 07 00 00 48 8b 44 24 28 80 60 01 f8 e9 cc ed ff ff e8 31 92 b3 ff 48 8b 5c 24 10 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 a6 07 00 00 49 89 de 8b 1b be 00 00 70 [ 20.579630][ T295] RSP: 0018:ffffc90000987920 EFLAGS: 00010247 [ 20.585554][ T295] RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffff88811e1e2780 [ 20.593344][ T295] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 20.601242][ T295] RBP: ffffc90000987b70 R08: ffffffff81bf4120 R09: ffffed102380b294 [ 20.609054][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000987bc0 [ 20.616863][ T295] R13: dffffc0000000000 R14: 0000000000000004 R15: ffffc90000987da0 [ 20.624674][ T295] FS: 00007f3dcc17e700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 20.633443][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.639882][ T295] CR2: 00007f3dcc17e718 CR3: 000000011b341000 CR4: 00000000003506a0 [ 20.647678][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.655492][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.663392][ T295] Call Trace: [ 20.666513][ T295] [ 20.669291][ T295] ? do_filp_open+0x460/0x460 [ 20.673811][ T295] do_filp_open+0x21c/0x460 [ 20.678140][ T295] ? vfs_tmpfile+0x2c0/0x2c0 [ 20.682577][ T295] do_sys_openat2+0x13b/0x500 [ 20.687081][ T295] ? do_sys_open+0x220/0x220 [ 20.691505][ T295] ? ptrace_notify+0x24c/0x350 [ 20.696105][ T295] __x64_sys_openat+0x243/0x290 [ 20.700790][ T295] ? __ia32_sys_open+0x270/0x270 [ 20.705564][ T295] ? __kasan_check_read+0x11/0x20 [ 20.710425][ T295] ? syscall_enter_from_user_mode+0x70/0x1b0 [ 20.716240][ T295] do_syscall_64+0x3d/0xb0 [ 20.720493][ T295] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 20.726307][ T295] RIP: 0033:0x7f3dcc1ed469 [ 20.730561][ T295] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 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 b8 ff ff ff f7 d8 64 89 01 48 [ 20.750003][ T295] RSP: 002b:00007f3dcc17e2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 20.758246][ T295] RAX: ffffffffffffffda RBX: 00007f3dcc2774d0 RCX: 00007f3dcc1ed469 [pid 293] futex(0x7f3dcc2774c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 20.766154][ T295] RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c [ 20.773959][ T295] RBP: 00007f3dcc24501c R08: 0000000000000000 R09: 0000000000000000 [ 20.781769][ T295] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff64b8514e [ 20.789580][ T295] R13: 00007f3dcc245038 R14: 2f30656c69662f2e R15: 00007f3dcc2774d8 [ 20.797391][ T295] [ 20.800254][ T295] Modules linked in: [ 20.804445][ T295] ---[ end trace 849502684630d515 ]--- [ 20.809803][ T295] RIP: 0010:path_openat+0x185b/0x2f40 [ 20.814982][ T295] Code: b6 04 28 84 c0 0f 85 ef 07 00 00 48 8b 44 24 28 80 60 01 f8 e9 cc ed ff ff e8 31 92 b3 ff 48 8b 5c 24 10 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 a6 07 00 00 49 89 de 8b 1b be 00 00 70 [ 20.834558][ T295] RSP: 0018:ffffc90000987920 EFLAGS: 00010247 [ 20.840565][ T295] RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffff88811e1e2780 [ 20.848471][ T295] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 20.856308][ T295] RBP: ffffc90000987b70 R08: ffffffff81bf4120 R09: ffffed102380b294 [ 20.864318][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000987bc0 [ 20.872168][ T295] R13: dffffc0000000000 R14: 0000000000000004 R15: ffffc90000987da0 [ 20.879975][ T295] FS: 00007f3dcc17e700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 20.888695][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.895049][ T295] CR2: 00007f3dcc17e718 CR3: 000000011b341000 CR4: 00000000003506a0 [ 20.903088][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.911015][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.918933][ T295] Kernel panic - not syncing: Fatal exception [ 20.924968][ T295] Kernel Offset: disabled [ 20.929096][ T295] Rebooting in 86400 seconds..