./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1091392705 <...> Warning: Permanently added '10.128.0.89' (ED25519) to the list of known hosts. execve("./syz-executor1091392705", ["./syz-executor1091392705"], 0x7ffd6afb4c80 /* 10 vars */) = 0 brk(NULL) = 0x555560d18000 brk(0x555560d18d00) = 0x555560d18d00 arch_prctl(ARCH_SET_FS, 0x555560d18380) = 0 set_tid_address(0x555560d18650) = 296 set_robust_list(0x555560d18660, 24) = 0 rseq(0x555560d18ca0, 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-executor1091392705", 4096) = 28 getrandom("\xd0\xe9\xfe\x33\xac\xcc\xa0\x06", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555560d18d00 brk(0x555560d39d00) = 0x555560d39d00 brk(0x555560d3a000) = 0x555560d3a000 mprotect(0x7f5649117000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 executing program write(1, "executing program\n", 18) = 18 mkdir("./file0", 000) = 0 mkdirat(AT_FDCWD, "./file1", 000) = 0 mkdir("./bus", 000) = 0 mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,metacopy=on,") = 0 mount("./bus", "./bus", "incremental-fs", 0, NULL) = 0 open("./file0", O_RDONLY) = 3 mknodat(3, "./file1", 000) = 0 chdir("./bus") = 0 link("./file1", "./bus") = 0 [ 23.709500][ T28] audit: type=1400 audit(1742639706.633:66): avc: denied { execmem } for pid=296 comm="syz-executor109" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.719773][ T296] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 23.729471][ T28] audit: type=1400 audit(1742639706.633:67): avc: denied { mounton } for pid=296 comm="syz-executor109" path="/root/bus" dev="sda1" ino=1929 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.740446][ T296] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 23.740463][ T296] CPU: 0 PID: 296 Comm: syz-executor109 Not tainted 6.1.128-syzkaller-00029-g5145d157731f #0 [ 23.740483][ T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 23.740494][ T296] RIP: 0010:security_inode_getattr+0x47/0x130 [ 23.740543][ T296] Code: 2d ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 c7 a6 75 ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 aa a6 75 ff 48 8b 1b 48 83 c3 0c [ 23.740559][ T296] RSP: 0018:ffffc90000e26ed8 EFLAGS: 00010206 [ 23.740577][ T296] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff8881260abcc0 [ 23.740590][ T296] RDX: 0000000000000000 RSI: ffffc90000e273c0 RDI: ffffc90000e273b0 [ 23.740603][ T296] RBP: ffffc90000e26f00 R08: dffffc0000000000 R09: ffffc90000e273b0 [ 23.764127][ T28] audit: type=1400 audit(1742639706.643:68): avc: denied { unlink } for pid=296 comm="syz-executor109" name="#1" dev="sda1" ino=1933 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=chr_file permissive=1 [ 23.771113][ T296] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000e273c0 [ 23.781388][ T28] audit: type=1400 audit(1742639706.643:69): avc: denied { mount } for pid=296 comm="syz-executor109" name="/" dev="overlay" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 23.791091][ T296] R13: dffffc0000000000 R14: ffffc90000e273b0 R15: ffffc90000e273b0 [ 23.791110][ T296] FS: 0000555560d18380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.791128][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.797373][ T28] audit: type=1400 audit(1742639706.643:70): avc: denied { mount } for pid=296 comm="syz-executor109" name="/" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 23.816421][ T296] CR2: 0000200000001600 CR3: 000000012607a000 CR4: 00000000003506b0 [ 23.816444][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.816455][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.816468][ T296] Call Trace: [ 23.822736][ T28] audit: type=1400 audit(1742639706.643:71): avc: denied { write } for pid=296 comm="syz-executor109" name="/" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 23.830133][ T296] [ 23.830142][ T296] ? __die_body+0x62/0xb0 [ 23.838231][ T28] audit: type=1400 audit(1742639706.643:72): avc: denied { add_name } for pid=296 comm="syz-executor109" name="file1" dev="incremental-fs" ino=1933 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 23.845757][ T296] ? die_addr+0x9f/0xd0 [ 23.845786][ T296] ? exc_general_protection+0x317/0x4c0 [ 23.868266][ T28] audit: type=1400 audit(1742639706.643:73): avc: denied { link } for pid=296 comm="syz-executor109" name="file1" dev="incremental-fs" ino=1933 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 23.875702][ T296] ? asm_exc_general_protection+0x27/0x30 [ 23.898113][ T28] audit: type=1400 audit(1742639706.643:74): avc: denied { write } for pid=296 comm="syz-executor109" name="bus" dev="incremental-fs" ino=1933 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 23.905643][ T296] ? security_inode_getattr+0x47/0x130 [ 23.905672][ T296] ? security_inode_getattr+0x1f/0x130 [ 23.914726][ T28] audit: type=1400 audit(1742639706.643:75): avc: denied { open } for pid=296 comm="syz-executor109" path="/root/bus/bus" dev="incremental-fs" ino=1933 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 23.920835][ T296] vfs_getattr+0x2a/0x310 [ 24.123539][ T296] ovl_copy_up_flags+0x5c8/0x3b40 [ 24.128500][ T296] ? security_file_open+0x62/0xa0 [ 24.133363][ T296] ? do_dentry_open+0x346/0x1250 [ 24.138143][ T296] ? ovl_maybe_copy_up+0x190/0x190 [ 24.143091][ T296] ? kernel_text_address+0xa9/0xe0 [ 24.148031][ T296] ? __kernel_text_address+0xd/0x40 [ 24.153077][ T296] ? unwind_get_return_address+0x4d/0x90 [ 24.158531][ T296] ? __kasan_check_write+0x14/0x20 [ 24.163487][ T296] ? _raw_spin_lock_irqsave+0xf9/0x210 [ 24.168772][ T296] ? _raw_spin_lock+0x1b0/0x1b0 [ 24.173458][ T296] ? stack_trace_save+0x113/0x1c0 [ 24.178319][ T296] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 24.183961][ T296] ? avc_has_perm_noaudit+0x348/0x430 [ 24.189169][ T296] ? memcpy+0x56/0x70 [ 24.192984][ T296] ? avc_has_perm_noaudit+0x2dd/0x430 [ 24.198200][ T296] ? mnt_want_write+0x231/0x300 [ 24.202879][ T296] ovl_maybe_copy_up+0x15a/0x190 [ 24.207665][ T296] ovl_open+0x108/0x2a0 [ 24.211647][ T296] ? ovl_mmap+0x450/0x450 [ 24.215810][ T296] ? __kasan_check_read+0x11/0x20 [ 24.220673][ T296] ? ovl_mmap+0x450/0x450 [ 24.224841][ T296] do_dentry_open+0x891/0x1250 [ 24.229441][ T296] dentry_open+0xb8/0x100 [ 24.233611][ T296] file_open+0x2a7/0x650 [ 24.237682][ T296] ? incfs_file_mmap+0x120/0x120 [ 24.242457][ T296] ? fsnotify_perm+0x269/0x5b0 [ 24.247057][ T296] ? incfs_file_mmap+0x120/0x120 [ 24.251833][ T296] do_dentry_open+0x891/0x1250 [ 24.256442][ T296] vfs_open+0x73/0x80 [ 24.260253][ T296] path_openat+0x2532/0x2d60 [ 24.264680][ T296] ? entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.270577][ T296] ? do_filp_open+0x480/0x480 [ 24.275091][ T296] do_filp_open+0x230/0x480 [ 24.279428][ T296] ? vfs_tmpfile+0x480/0x480 [ 24.283858][ T296] ? alloc_fd+0x4fe/0x5a0 [ 24.288026][ T296] do_sys_openat2+0x151/0x870 [ 24.292535][ T296] ? ptrace_stop+0x709/0x930 [ 24.296959][ T296] ? do_sys_open+0x220/0x220 [ 24.301388][ T296] ? _raw_spin_unlock_irq+0x4d/0x70 [ 24.306423][ T296] ? ptrace_notify+0x249/0x350 [ 24.311019][ T296] __x64_sys_creat+0x11f/0x160 [ 24.315622][ T296] ? __x64_compat_sys_openat+0x290/0x290 [ 24.321091][ T296] x64_sys_call+0x27b/0x9a0 [ 24.325428][ T296] do_syscall_64+0x3b/0xb0 [ 24.329679][ T296] ? clear_bhb_loop+0x55/0xb0 [ 24.334194][ T296] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.339927][ T296] RIP: 0033:0x7f56490a4569 [ 24.344174][ T296] Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 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 [ 24.363614][ T296] RSP: 002b:00007ffd3ee9d948 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 24.371860][ T296] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f56490a4569 [ 24.379673][ T296] RDX: 00007f56490a4569 RSI: 0000000000000000 RDI: 0000200000000100 [ 24.387482][ T296] RBP: 00002000000000c0 R08: 00007ffd3ee9db28 R09: 00007ffd3ee9db28 [ 24.395297][ T296] R10: 00007ffd3ee9db28 R11: 0000000000000246 R12: 0030656c69662f2e [ 24.403190][ T296] R13: 00007ffd3ee9db18 R14: 0000000000000001 R15: 0000000000000001 [ 24.411007][ T296] [ 24.413867][ T296] Modules linked in: [ 24.420755][ T296] ---[ end trace 0000000000000000 ]--- [ 24.426261][ T296] RIP: 0010:security_inode_getattr+0x47/0x130 [ 24.432202][ T296] Code: 2d ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 c7 a6 75 ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 aa a6 75 ff 48 8b 1b 48 83 c3 0c [ 24.451987][ T296] RSP: 0018:ffffc90000e26ed8 EFLAGS: 00010206 [ 24.457934][ T296] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff8881260abcc0 [ 24.466104][ T296] RDX: 0000000000000000 RSI: ffffc90000e273c0 RDI: ffffc90000e273b0 [ 24.474745][ T296] RBP: ffffc90000e26f00 R08: dffffc0000000000 R09: ffffc90000e273b0 [ 24.482596][ T296] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000e273c0 [ 24.490469][ T296] R13: dffffc0000000000 R14: ffffc90000e273b0 R15: ffffc90000e273b0 [ 24.498510][ T296] FS: 0000555560d18380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 24.508135][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.520200][ T296] CR2: 0000559a1bc73098 CR3: 000000012607a000 CR4: 00000000003506a0 [ 24.528384][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.536260][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.544148][ T296] Kernel panic - not syncing: Fatal exception [ 24.550329][ T296] Kernel Offset: disabled [ 24.554456][ T296] Rebooting in 86400 seconds..