./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3143119633 <...> rocess permissive=1 [ 17.633379][ T28] audit: type=1400 audit(1753180112.024:63): avc: denied { siginh } for pid=225 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.31' (ED25519) to the list of known hosts. execve("./syz-executor3143119633", ["./syz-executor3143119633"], 0x7ffd975476d0 /* 10 vars */) = 0 brk(NULL) = 0x555575069000 brk(0x555575069d00) = 0x555575069d00 arch_prctl(ARCH_SET_FS, 0x555575069380) = 0 set_tid_address(0x555575069650) = 290 set_robust_list(0x555575069660, 24) = 0 rseq(0x555575069ca0, 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-executor3143119633", 4096) = 28 getrandom("\x86\xa7\x98\xd0\xa0\x5a\xf6\xa7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555575069d00 brk(0x55557508ad00) = 0x55557508ad00 brk(0x55557508b000) = 0x55557508b000 mprotect(0x7fb6e6f9c000, 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, 0executing program ) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 write(1, "executing program\n", 18) = 18 mkdir("./file0", 000) = 0 mkdirat(AT_FDCWD, "./file1", 000) = 0 mkdir("./bus", 0222) = 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 [ 27.251188][ T28] audit: type=1400 audit(1753180121.654:64): avc: denied { execmem } for pid=290 comm="syz-executor314" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 27.261461][ T290] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 27.271298][ T28] audit: type=1400 audit(1753180121.654:65): avc: denied { mounton } for pid=290 comm="syz-executor314" path="/root/bus" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 27.282312][ T290] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 27.282328][ T290] CPU: 1 PID: 290 Comm: syz-executor314 Not tainted 6.1.141-syzkaller-00041-gde932537be34 #0 [ 27.282347][ T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 27.282358][ T290] RIP: 0010:security_inode_getattr+0x47/0x140 [ 27.306479][ T28] audit: type=1400 audit(1753180121.654:66): avc: denied { unlink } for pid=290 comm="syz-executor314" name="#1" dev="sda1" ino=2030 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=chr_file permissive=1 [ 27.313248][ T290] Code: 3c ff 4c 8d 73 08 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 07 5f 80 ff 4d 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 ea 5e 80 ff 4d 8b 36 49 83 c6 0c [ 27.323667][ T28] audit: type=1400 audit(1753180121.654:67): avc: denied { mount } for pid=290 comm="syz-executor314" name="/" dev="overlay" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 27.333449][ T290] RSP: 0018:ffffc90000e07040 EFLAGS: 00010206 [ 27.333479][ T290] RAX: 0000000000000006 RBX: ffffc90000e07410 RCX: ffff888107b8d100 [ 27.333492][ T290] RDX: 0000000000000000 RSI: ffffc90000e07420 RDI: ffffc90000e07410 [ 27.339842][ T28] audit: type=1400 audit(1753180121.654:68): avc: denied { mount } for pid=290 comm="syz-executor314" name="/" dev="incremental-fs" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 27.361754][ T290] RBP: ffffc90000e07068 R08: dffffc0000000000 R09: ffffc90000e07410 [ 27.361771][ T290] R10: 0000000000000000 R11: 0000000000000028 R12: ffffc90000e07410 [ 27.361783][ T290] R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000048002 [ 27.361796][ T290] FS: 0000555575069380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 27.381813][ T28] audit: type=1400 audit(1753180121.654:69): avc: denied { write } for pid=290 comm="syz-executor314" name="/" dev="incremental-fs" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 27.403611][ T290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.403632][ T290] CR2: 0000200000001600 CR3: 00000001040cf000 CR4: 00000000003506a0 [ 27.403647][ T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.403658][ T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.403670][ T290] Call Trace: [ 27.403676][ T290] [ 27.403685][ T290] vfs_getattr+0x29/0x310 [ 27.410263][ T28] audit: type=1400 audit(1753180121.654:70): avc: denied { add_name } for pid=290 comm="syz-executor314" name="file1" dev="incremental-fs" ino=2030 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 27.417712][ T290] ovl_copy_up_flags+0x3c8/0x24b0 [ 27.417738][ T290] ? audit_log_end+0x1eb/0x240 [ 27.425959][ T28] audit: type=1400 audit(1753180121.654:71): avc: denied { link } for pid=290 comm="syz-executor314" name="file1" dev="incremental-fs" ino=2030 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 27.449234][ T290] ? slow_avc_audit+0x1ac/0x220 [ 27.449261][ T290] ? avc_has_perm+0x1e6/0x240 [ 27.457531][ T28] audit: type=1400 audit(1753180121.654:72): avc: denied { write } for pid=290 comm="syz-executor314" name="bus" dev="incremental-fs" ino=2030 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 27.465207][ T290] ? selinux_file_open+0x467/0x620 [ 27.465237][ T290] ? do_dentry_open+0x34b/0x1260 [ 27.473340][ T28] audit: type=1400 audit(1753180121.654:73): avc: denied { open } for pid=290 comm="syz-executor314" path="/root/bus/bus" dev="incremental-fs" ino=2030 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 27.482139][ T290] ? vfs_open+0x73/0x80 [ 27.482168][ T290] ? ovl_maybe_copy_up+0x190/0x190 [ 27.677921][ T290] ? is_bpf_text_address+0x177/0x190 [ 27.683227][ T290] ? kernel_text_address+0xa0/0xd0 [ 27.688363][ T290] ? __kernel_text_address+0xd/0x30 [ 27.693571][ T290] ? __kasan_check_write+0x14/0x20 [ 27.698685][ T290] ? _raw_spin_lock_irqsave+0xb0/0x110 [ 27.704156][ T290] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 27.710048][ T290] ? _raw_spin_unlock_irqrestore+0x5a/0x80 [ 27.715854][ T290] ? __stack_depot_save+0x445/0x480 [ 27.721073][ T290] ? avc_has_perm_noaudit+0x2f4/0x460 [ 27.726450][ T290] ovl_maybe_copy_up+0x160/0x190 [ 27.731386][ T290] ovl_open+0xf7/0x2e0 [ 27.735451][ T290] ? __cfi_ovl_open+0x10/0x10 [ 27.740123][ T290] ? fsnotify_perm+0x269/0x5b0 [ 27.744881][ T290] do_dentry_open+0x88e/0x1260 [ 27.749640][ T290] ? __cfi_ovl_open+0x10/0x10 [ 27.754317][ T290] dentry_open+0xbb/0x100 [ 27.758645][ T290] file_open+0x298/0x630 [ 27.762881][ T290] ? __cfi_file_open+0x10/0x10 [ 27.767638][ T290] do_dentry_open+0x88e/0x1260 [ 27.772395][ T290] ? __cfi_file_open+0x10/0x10 [ 27.777151][ T290] vfs_open+0x73/0x80 [ 27.781127][ T290] path_openat+0x2681/0x2f50 [ 27.785714][ T290] ? do_filp_open+0x3c0/0x3c0 [ 27.790385][ T290] do_filp_open+0x1c1/0x3c0 [ 27.794882][ T290] ? __cfi_do_filp_open+0x10/0x10 [ 27.799997][ T290] ? alloc_fd+0x4e6/0x590 [ 27.804325][ T290] do_sys_openat2+0x185/0x7e0 [ 27.808996][ T290] ? _raw_spin_unlock_irq+0x4d/0x70 [ 27.814193][ T290] ? ptrace_notify+0x1d1/0x250 [ 27.818979][ T290] ? do_sys_open+0xe0/0xe0 [ 27.823388][ T290] ? __cfi_ptrace_notify+0x10/0x10 [ 27.828497][ T290] ? xfd_validate_state+0x70/0x150 [ 27.833606][ T290] __x64_sys_creat+0x8e/0xb0 [ 27.838196][ T290] x64_sys_call+0x116/0x9a0 [ 27.842696][ T290] do_syscall_64+0x4c/0xa0 [ 27.847189][ T290] ? clear_bhb_loop+0x30/0x80 [ 27.851862][ T290] ? clear_bhb_loop+0x30/0x80 [ 27.856534][ T290] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.862420][ T290] RIP: 0033:0x7fb6e6f29569 [ 27.866848][ T290] 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 [ 27.886451][ T290] RSP: 002b:00007ffc8785ee18 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 27.894964][ T290] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fb6e6f29569 [ 27.902933][ T290] RDX: 00007fb6e6f29569 RSI: 0000000000000000 RDI: 0000200000000100 [ 27.910899][ T290] RBP: 00002000000000c0 R08: 00007ffc8785eff8 R09: 00007ffc8785eff8 [ 27.918871][ T290] R10: 00007ffc8785eff8 R11: 0000000000000246 R12: 0030656c69662f2e [ 27.926840][ T290] R13: 00007ffc8785efe8 R14: 0000000000000001 R15: 0000000000000001 [ 27.934807][ T290] [ 27.937837][ T290] Modules linked in: [ 27.942247][ T290] ---[ end trace 0000000000000000 ]--- [ 27.948298][ T290] RIP: 0010:security_inode_getattr+0x47/0x140 [ 27.954367][ T290] Code: 3c ff 4c 8d 73 08 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 07 5f 80 ff 4d 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 ea 5e 80 ff 4d 8b 36 49 83 c6 0c [ 27.974214][ T290] RSP: 0018:ffffc90000e07040 EFLAGS: 00010206 [ 27.980330][ T290] RAX: 0000000000000006 RBX: ffffc90000e07410 RCX: ffff888107b8d100 [ 27.988684][ T290] RDX: 0000000000000000 RSI: ffffc90000e07420 RDI: ffffc90000e07410 [ 27.996711][ T290] RBP: ffffc90000e07068 R08: dffffc0000000000 R09: ffffc90000e07410 [ 28.004694][ T290] R10: 0000000000000000 R11: 0000000000000028 R12: ffffc90000e07410 [ 28.012741][ T290] R13: dffffc0000000000 R14: 0000000000000030 R15: 0000000000048002 [ 28.020782][ T290] FS: 0000555575069380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 28.029745][ T290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.036374][ T290] CR2: 0000200000001600 CR3: 00000001040cf000 CR4: 00000000003506a0 [ 28.044339][ T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.052404][ T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.060406][ T290] Kernel panic - not syncing: Fatal exception [ 28.066841][ T290] Kernel Offset: disabled [ 28.071258][ T290] Rebooting in 86400 seconds..