./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1227410040 <...> Warning: Permanently added '10.128.0.70' (ED25519) to the list of known hosts. execve("./syz-executor1227410040", ["./syz-executor1227410040"], 0x7ffdb35341a0 /* 10 vars */) = 0 brk(NULL) = 0x55555740e000 brk(0x55555740ee00) = 0x55555740ee00 arch_prctl(ARCH_SET_FS, 0x55555740e480) = 0 set_tid_address(0x55555740e750) = 287 set_robust_list(0x55555740e760, 24) = 0 rseq(0x55555740eda0, 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-executor1227410040", 4096) = 28 getrandom("\xc2\x3f\x58\xaa\xb6\x93\x6c\x8f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555740ee00 brk(0x55555742fe00) = 0x55555742fe00 brk(0x555557430000) = 0x555557430000 mprotect(0x7fdb50b17000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7fdb50a5bb00, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fdb50a64250}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7fdb50a5bb00, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fdb50a64250}, NULL, 8) = 0 futex(0x7fdb50b1d40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fdb50ab92a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fdb50a64250}, 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) = 0x7fdb50a31000 mprotect(0x7fdb50a32000, 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=0x7fdb50a51990, parent_tid=0x7fdb50a51990, exit_signal=0, stack=0x7fdb50a31000, stack_size=0x20240, tls=0x7fdb50a516c0} => {parent_tid=[288]}, 88) = 288 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ./strace-static-x86_64: Process 288 attached [pid 287] futex(0x7fdb50b1d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fdb50b1d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] set_robust_list(0x7fdb50a519a0, 24) = 0 [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 288] futex(0x7fdb50b1d40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 288] <... futex resumed>) = 1 [pid 287] futex(0x7fdb50b1d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fdb50b1d40c, 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 [ 21.377488][ T24] audit: type=1400 audit(1695457648.510:66): avc: denied { execmem } for pid=287 comm="syz-executor122" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.384615][ T24] audit: type=1400 audit(1695457648.520:67): avc: denied { read write } for pid=287 comm="syz-executor122" 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 [ 21.391879][ T24] audit: type=1400 audit(1695457648.520:68): avc: denied { open } for pid=287 comm="syz-executor122" 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 [ 21.395551][ T24] audit: type=1400 audit(1695457648.520:69): avc: denied { mounton } for pid=287 comm="syz-executor122" 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(0x7fdb50b1d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7fdb50b1d41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fdb50a10000 [pid 287] mprotect(0x7fdb50a11000, 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=0x7fdb50a30990, parent_tid=0x7fdb50a30990, exit_signal=0, stack=0x7fdb50a10000, stack_size=0x20240, tls=0x7fdb50a306c0}./strace-static-x86_64: Process 290 attached => {parent_tid=[290]}, 88) = 290 [pid 287] rt_sigprocmask(SIG_SETMASK, [], [pid 290] set_robust_list(0x7fdb50a309a0, 24 [pid 287] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 290] <... set_robust_list resumed>) = 0 [pid 287] futex(0x7fdb50b1d418, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] rt_sigprocmask(SIG_SETMASK, [], [pid 287] <... futex resumed>) = 0 [pid 290] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 287] futex(0x7fdb50b1d41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 21.406191][ T24] audit: type=1400 audit(1695457648.520:70): avc: denied { mount } for pid=287 comm="syz-executor122" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 290] setxattr("./file0/file0", NULL, NULL, 0, 0x4 /* XATTR_??? */ [pid 287] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7fdb50b1d41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7fdb50b1d41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7fdb50b1d42c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fdb509ef000 [pid 287] mprotect(0x7fdb509f0000, 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=0x7fdb50a0f990, parent_tid=0x7fdb50a0f990, exit_signal=0, stack=0x7fdb509ef000, stack_size=0x20240, tls=0x7fdb50a0f6c0} => {parent_tid=[291]}, 88) = 291 [pid 287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 287] futex(0x7fdb50b1d428, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fdb50b1d42c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 291 attached [pid 291] set_robust_list(0x7fdb50a0f9a0, 24) = 0 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] 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 291] futex(0x7fdb50b1d42c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7fdb50b1d428, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fdb50b1d42c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] write(3, "\x18\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00", 24) = 24 [pid 291] futex(0x7fdb50b1d42c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7fdb50b1d428, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fdb50b1d42c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] read(3, "\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\x22\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 291] write(3, "\x90\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\xdb\xc0\x00\x00\x00\x00\x00\x00\x01\x76\x00\x00\xf9\xff\xff\xff\x05\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x00\x07\x00\x00\x00"..., 144) = 144 [pid 291] futex(0x7fdb50b1d42c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 291] futex(0x7fdb50b1d428, FUTEX_WAIT_PRIVATE, 0, NULL [pid 287] <... futex resumed>) = 0 [ 21.490103][ T290] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 21.501745][ T290] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 21.509989][ T290] CPU: 0 PID: 290 Comm: syz-executor122 Not tainted 5.10.194-syzkaller-00508-ga27512601c2d #0 [ 21.520057][ T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 21.529967][ T290] RIP: 0010:step_into+0x1b9/0xec0 [ 21.534811][ 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 46 9d 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 [ 21.554255][ T290] RSP: 0018:ffffc90000b07940 EFLAGS: 00010202 [ 21.560153][ T290] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88811ebabb40 [ 21.567968][ T290] RDX: ffffc90000b07c98 RSI: 0000000000000000 RDI: 0000000000000000 [ 21.575773][ T290] RBP: ffffc90000b07a70 R08: ffffffff81b4571f R09: ffffed1023813495 [pid 287] exit_group(0) = ? [pid 288] <... openat resumed>) = ? [pid 288] +++ exited with 0 +++ [pid 291] <... futex resumed>) = ? [pid 291] +++ exited with 0 +++ [ 21.583584][ T290] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000160f3f [ 21.591401][ T290] R13: dffffc0000000000 R14: ffffc90000b07c60 R15: 0000000000000001 [ 21.599207][ T290] FS: 00007fdb50a306c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.607973][ T290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.614408][ T290] CR2: 0000000020009000 CR3: 000000011e8b8000 CR4: 00000000003506b0 [ 21.622204][ T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.630015][ T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.637820][ T290] Call Trace: [ 21.640958][ T290] ? __die_body+0x62/0xb0 [ 21.645122][ T290] ? die_addr+0x9f/0xd0 [ 21.649117][ T290] ? exc_general_protection+0x3ff/0x490 [ 21.654500][ T290] ? lockref_put_return+0x1b7/0x210 [ 21.659526][ T290] ? asm_exc_general_protection+0x1e/0x30 [ 21.665079][ T290] ? step_into+0x15f/0xec0 [ 21.669334][ T290] ? step_into+0x1b9/0xec0 [ 21.673591][ T290] ? set_root+0x3d0/0x3d0 [ 21.677754][ T290] ? __kasan_check_write+0x14/0x20 [ 21.682738][ T290] ? up_read+0x14/0x90 [ 21.686611][ T290] walk_component+0x359/0x610 [ 21.691122][ T290] ? nd_alloc_stack+0xf0/0xf0 [ 21.695634][ T290] ? handle_lookup_down+0x130/0x130 [ 21.700666][ T290] path_lookupat+0x16d/0x450 [ 21.705090][ T290] filename_lookup+0x26a/0x6f0 [ 21.709691][ T290] ? hashlen_string+0x120/0x120 [ 21.714389][ T290] ? getname_flags+0x1fd/0x520 [ 21.719065][ T290] user_path_at_empty+0x40/0x50 [ 21.723753][ T290] path_setxattr+0xae/0x240 [ 21.728093][ T290] ? do_notify_parent+0xa10/0xa10 [ 21.732949][ T290] ? simple_xattr_list_add+0x120/0x120 [ 21.738259][ T290] ? fpu__clear_all+0x20/0x20 [ 21.742761][ T290] __x64_sys_setxattr+0xc5/0xe0 [ 21.747445][ T290] do_syscall_64+0x34/0x70 [ 21.751701][ T290] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 21.757430][ T290] RIP: 0033:0x7fdb50a93669 [ 21.761681][ 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 [ 21.781208][ T290] RSP: 002b:00007fdb50a30168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc [ 21.789462][ T290] RAX: ffffffffffffffda RBX: 00007fdb50b1d418 RCX: 00007fdb50a93669 [ 21.797269][ T290] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020002740 [ 21.805071][ T290] RBP: 00007fdb50b1d410 R08: 0000000000000004 R09: 00007fdb50b1d418 [ 21.812884][ T290] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdb50b1d41c [ 21.820694][ T290] R13: 000000000000006e R14: 00007fffa8ffd7a0 R15: 00007fffa8ffd888 [ 21.828508][ T290] Modules linked in: [ 21.832375][ T290] ---[ end trace d003972884bf56e3 ]--- [ 21.837688][ T290] RIP: 0010:step_into+0x1b9/0xec0 [ 21.842504][ 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 46 9d 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 [ 21.861997][ T290] RSP: 0018:ffffc90000b07940 EFLAGS: 00010202 [ 21.867981][ T290] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88811ebabb40 [ 21.875750][ T290] RDX: ffffc90000b07c98 RSI: 0000000000000000 RDI: 0000000000000000 [ 21.883620][ T290] RBP: ffffc90000b07a70 R08: ffffffff81b4571f R09: ffffed1023813495 [ 21.891447][ T290] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000160f3f [ 21.899257][ T290] R13: dffffc0000000000 R14: ffffc90000b07c60 R15: 0000000000000001 [ 21.907000][ T290] FS: 00007fdb50a306c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.915907][ T290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.922312][ T290] CR2: 0000000020009000 CR3: 000000011e8b8000 CR4: 00000000003506b0 [ 21.930116][ T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.937928][ T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.945708][ T290] Kernel panic - not syncing: Fatal exception [ 21.951889][ T290] Kernel Offset: disabled [ 21.956013][ T290] Rebooting in 86400 seconds..