./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor89733192 <...> [ 3.487196][ T30] audit: type=1400 audit(1695803449.819:10): avc: denied { getattr } for pid=82 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=2 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 3.511110][ T84] acpid (84) used greatest stack depth: 22096 bytes left [ 3.775434][ T99] udevd[99]: starting version 3.2.11 [ 3.844468][ T100] udevd[100]: starting eudev-3.2.11 [ 12.099919][ T30] kauditd_printk_skb: 50 callbacks suppressed [ 12.099931][ T30] audit: type=1400 audit(1695803458.469:61): avc: denied { transition } for pid=223 comm="sshd" path="/bin/sh" dev="sda1" ino=89 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 12.107804][ T30] audit: type=1400 audit(1695803458.469:62): avc: denied { noatsecure } for pid=223 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 12.114003][ T30] audit: type=1400 audit(1695803458.469:63): avc: denied { write } for pid=223 comm="sh" path="pipe:[13143]" dev="pipefs" ino=13143 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 12.117912][ T30] audit: type=1400 audit(1695803458.469:64): avc: denied { rlimitinh } for pid=223 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 12.123439][ T30] audit: type=1400 audit(1695803458.469:65): avc: denied { siginh } for pid=223 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.27' (ED25519) to the list of known hosts. execve("./syz-executor89733192", ["./syz-executor89733192"], 0x7ffc1d407bf0 /* 10 vars */) = 0 brk(NULL) = 0x5555572a6000 brk(0x5555572a6d40) = 0x5555572a6d40 arch_prctl(ARCH_SET_FS, 0x5555572a63c0) = 0 set_tid_address(0x5555572a6690) = 292 set_robust_list(0x5555572a66a0, 24) = 0 rseq(0x5555572a6ce0, 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-executor89733192", 4096) = 26 getrandom("\x43\x72\x5e\xe2\x93\xfb\x88\x6a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555572a6d40 brk(0x5555572c7d40) = 0x5555572c7d40 brk(0x5555572c8000) = 0x5555572c8000 mprotect(0x7f4a9ec4e000, 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(0x7f4a9ec5440c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f4a9ebed460, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f4a9ebdeae0}, 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) = 0x7f4a9eb69000 mprotect(0x7f4a9eb6a000, 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=0x7f4a9eb89990, parent_tid=0x7f4a9eb89990, exit_signal=0, stack=0x7f4a9eb69000, stack_size=0x20300, tls=0x7f4a9eb896c0} => {parent_tid=[293]}, 88) = 293 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f4a9ec54408, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f4a9ec5440c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 293 attached [pid 293] set_robust_list(0x7f4a9eb899a0, 24) = 0 [pid 293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 293] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 293] futex(0x7f4a9ec5440c, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f4a9ec54408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f4a9ec5440c, 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(0x7f4a9ec5440c, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f4a9ec54408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f4a9ec5440c, 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(0x7f4a9ec5440c, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f4a9ec54408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f4a9ec5440c, 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(0x7f4a9ec5440c, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f4a9ec54408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f4a9ec5440c, 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\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 293] futex(0x7f4a9ec5440c, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f4a9ec54408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f4a9ec5440c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [ 20.903320][ T30] audit: type=1400 audit(1695803467.269:66): avc: denied { execmem } for pid=292 comm="syz-executor897" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.911407][ T30] audit: type=1400 audit(1695803467.279:67): avc: denied { read write } for pid=292 comm="syz-executor897" 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 [ 20.918641][ T30] audit: type=1400 audit(1695803467.279:68): avc: denied { open } for pid=292 comm="syz-executor897" 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 [ 20.928023][ T30] audit: type=1400 audit(1695803467.279:69): avc: denied { mounton } for pid=292 comm="syz-executor897" 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 293] read(3, [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f4a9ec5441c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4a9eb48000 [pid 292] mprotect(0x7f4a9eb49000, 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=0x7f4a9eb68990, parent_tid=0x7f4a9eb68990, exit_signal=0, stack=0x7f4a9eb48000, stack_size=0x20300, tls=0x7f4a9eb686c0} => {parent_tid=[295]}, 88) = 295 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] futex(0x7f4a9ec54418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f4a9ec5441c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x7f4a9eb689a0, 24) = 0 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] openat(AT_FDCWD, "./file0", O_RDONLY [pid 293] <... 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\x27\x01\x00\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x00\x00\x00", 8192) = 48 [pid 293] 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 293] futex(0x7f4a9ec5440c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f4a9ec54408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 295] <... openat resumed>) = 4 [pid 295] futex(0x7f4a9ec5441c, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f4a9ec54408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 293] <... futex resumed>) = 0 [pid 292] futex(0x7f4a9ec5440c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] mknodat(4, "./file0", 0200 [pid 295] <... futex resumed>) = 1 [ 20.950951][ T30] audit: type=1400 audit(1695803467.279:70): avc: denied { mount } for pid=292 comm="syz-executor897" 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(0x7f4a9ec54418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f4a9ec54418, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 292] futex(0x7f4a9ec5441c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 0 [pid 295] 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\x25\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8224) = 46 [pid 295] futex(0x7f4a9ec5441c, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f4a9ec54418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f4a9ec5441c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] 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) = 168 [pid 295] futex(0x7f4a9ec5441c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 295] futex(0x7f4a9ec54418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = 0 [ 21.026435][ T293] general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN [ 21.037988][ T293] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 21.046242][ T293] CPU: 0 PID: 293 Comm: syz-executor897 Not tainted 5.15.131-syzkaller-00653-gea586874d2f9 #0 [ 21.056302][ T293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 21.066197][ T293] RIP: 0010:filename_create+0x2d2/0x520 [ 21.071575][ T293] Code: 92 00 00 00 4c 89 7c 24 28 45 84 e4 0f 95 c0 83 7c 24 14 00 0f 94 c3 20 c3 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 1f 02 00 00 45 8b 26 41 bd 00 00 70 00 be [ 21.091020][ T293] RSP: 0018:ffffc90000967ce0 EFLAGS: 00010206 [ 21.096917][ T293] RAX: 0000000000000003 RBX: 1ffff9200012cf00 RCX: dffffc0000000000 [ 21.104728][ T293] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 21.112681][ T293] RBP: ffffc90000967dd0 R08: ffffffff81bff470 R09: ffffed102379a53e [pid 292] exit_group(0) = ? [pid 295] <... futex resumed>) = ? [pid 295] +++ exited with 0 +++ [ 21.120468][ T293] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 21.128282][ T293] R13: 0000000000000600 R14: 0000000000000018 R15: ffffc90000967e80 [ 21.136094][ T293] FS: 00007f4a9eb896c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.144861][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.151277][ T293] CR2: 00007f4a9eb68d58 CR3: 000000011e14b000 CR4: 00000000003506b0 [ 21.159092][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.166901][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.174714][ T293] Call Trace: [ 21.177841][ T293] [ 21.180616][ T293] ? __die_body+0x62/0xb0 [ 21.184788][ T293] ? die_addr+0x9f/0xd0 [ 21.188785][ T293] ? exc_general_protection+0x311/0x4b0 [ 21.194159][ T293] ? asm_exc_general_protection+0x27/0x30 [ 21.199803][ T293] ? dput+0x90/0x320 [ 21.203527][ T293] ? filename_create+0x2d2/0x520 [ 21.208323][ T293] ? kern_path_create+0x1a0/0x1a0 [ 21.213282][ T293] do_mknodat+0x1a4/0x5c0 [ 21.217444][ T293] ? __check_object_size+0x2ec/0x3d0 [ 21.222568][ T293] ? may_open+0x440/0x440 [ 21.226731][ T293] ? getname_flags+0x1fd/0x520 [ 21.231331][ T293] __x64_sys_mknodat+0xa9/0xc0 [ 21.235932][ T293] do_syscall_64+0x3d/0xb0 [ 21.240185][ T293] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.245910][ T293] RIP: 0033:0x7f4a9ebc75b9 [ 21.250165][ T293] 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 [ 21.269607][ T293] RSP: 002b:00007f4a9eb89218 EFLAGS: 00000246 ORIG_RAX: 0000000000000103 [ 21.277852][ T293] RAX: ffffffffffffffda RBX: 00007f4a9ec54408 RCX: 00007f4a9ebc75b9 [ 21.285662][ T293] RDX: 0000000000000080 RSI: 00000000200000c0 RDI: 0000000000000004 [ 21.293481][ T293] RBP: 00007f4a9ec54400 R08: 0000000000000000 R09: 0000000000000000 [ 21.301288][ T293] R10: 0000000000000700 R11: 0000000000000246 R12: 00007f4a9ec21024 [ 21.309101][ T293] R13: 0030656c69662f2e R14: 0000000000000003 R15: 00007f4a9ec2104c [ 21.316914][ T293] [ 21.319772][ T293] Modules linked in: [ 21.323637][ T293] ---[ end trace c6a8b6030ded2e74 ]--- [ 21.328937][ T293] RIP: 0010:filename_create+0x2d2/0x520 [ 21.334289][ T293] Code: 92 00 00 00 4c 89 7c 24 28 45 84 e4 0f 95 c0 83 7c 24 14 00 0f 94 c3 20 c3 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 1f 02 00 00 45 8b 26 41 bd 00 00 70 00 be [ 21.353973][ T293] RSP: 0018:ffffc90000967ce0 EFLAGS: 00010206 [ 21.360009][ T293] RAX: 0000000000000003 RBX: 1ffff9200012cf00 RCX: dffffc0000000000 [ 21.367813][ T293] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 21.375606][ T293] RBP: ffffc90000967dd0 R08: ffffffff81bff470 R09: ffffed102379a53e [ 21.383478][ T293] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 21.391217][ T293] R13: 0000000000000600 R14: 0000000000000018 R15: ffffc90000967e80 [ 21.399033][ T293] FS: 00007f4a9eb896c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 21.407842][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.414195][ T293] CR2: 00007f797acf8304 CR3: 000000011e14b000 CR4: 00000000003506a0 [ 21.422034][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.429840][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.437660][ T293] Kernel panic - not syncing: Fatal exception [ 21.443605][ T293] Kernel Offset: disabled [ 21.447702][ T293] Rebooting in 86400 seconds..