./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2181117080 <...> Warning: Permanently added '10.128.1.187' (ED25519) to the list of known hosts. execve("./syz-executor2181117080", ["./syz-executor2181117080"], 0x7ffe9ae8c9a0 /* 10 vars */) = 0 brk(NULL) = 0x55558857c000 brk(0x55558857ce00) = 0x55558857ce00 arch_prctl(ARCH_SET_FS, 0x55558857c480) = 0 set_tid_address(0x55558857c750) = 288 set_robust_list(0x55558857c760, 24) = 0 rseq(0x55558857cda0, 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-executor2181117080", 4096) = 28 getrandom("\x39\xaf\xec\x02\x9b\x40\xe8\xe0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558857ce00 brk(0x55558859de00) = 0x55558859de00 brk(0x55558859e000) = 0x55558859e000 mprotect(0x7f85a8ef1000, 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 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=0x7f85a8e4b150, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f85a8e52510}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f85a8e4b150, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f85a8e52510}, NULL, 8) = 0 write(1, "executing program\n", 18) = 18 mkdirat(AT_FDCWD, "./file0", 000executing program ) = 0 openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = 3 mkdir("./file2", 0777) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,metacopy=on,,") = 0 mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 openat(AT_FDCWD, "./file0", O_RDONLY) = 4 [ 25.708645][ T30] audit: type=1400 audit(1753445800.672:64): avc: denied { execmem } for pid=288 comm="syz-executor218" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.732358][ T30] audit: type=1400 audit(1753445800.692:65): avc: denied { mounton } for pid=288 comm="syz-executor218" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 linkat(4, "./file1", 4, "./file3", AT_SYMLINK_FOLLOW|AT_EMPTY_PATH) = 0 [ 25.755441][ T30] audit: type=1400 audit(1753445800.692:66): avc: denied { unlink } for pid=288 comm="syz-executor218" name="#1" dev="sda1" ino=2029 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=chr_file permissive=1 [ 25.761355][ T288] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 25.778819][ T30] audit: type=1400 audit(1753445800.692:67): avc: denied { mount } for pid=288 comm="syz-executor218" name="/" dev="overlay" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 25.789503][ T288] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 25.789519][ T288] CPU: 0 PID: 288 Comm: syz-executor218 Not tainted 5.15.189-syzkaller-00079-ga71626bd56a5 #0 [ 25.789539][ T288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 25.789550][ T288] RIP: 0010:security_inode_getattr+0x47/0x130 [ 25.812136][ T30] audit: type=1400 audit(1753445800.722:68): avc: denied { mount } for pid=288 comm="syz-executor218" name="/" dev="incremental-fs" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 25.820168][ T288] Code: 48 ff 4c 8d 73 08 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 67 a8 86 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 4a a8 86 ff 4d 8b 36 49 83 c6 0c [ 25.820186][ T288] RSP: 0018:ffffc900009970e0 EFLAGS: 00010206 [ 25.820204][ T288] RAX: 0000000000000006 RBX: ffffc900009974d0 RCX: ffff8881063ccf00 [ 25.830647][ T30] audit: type=1400 audit(1753445800.722:69): avc: denied { write } for pid=288 comm="syz-executor218" name="/" dev="incremental-fs" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 25.840494][ T288] RDX: 0000000000000000 RSI: ffffc900009974e0 RDI: ffffc900009974d0 [ 25.840510][ T288] RBP: ffffc90000997108 R08: dffffc0000000000 R09: ffffc900009974d0 [ 25.840524][ T288] R10: 0000000000000000 R11: 0000000000000020 R12: ffffc900009974d0 [ 25.846832][ T30] audit: type=1400 audit(1753445800.722:70): avc: denied { add_name } for pid=288 comm="syz-executor218" name="file1" dev="incremental-fs" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 25.870009][ T288] R13: dffffc0000000000 R14: 0000000000000030 R15: ffffc90000997480 [ 25.870030][ T288] FS: 000055558857c480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 25.870048][ T288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.870062][ T288] CR2: 0000000000000000 CR3: 00000001258e7000 CR4: 00000000003506b0 [ 25.889736][ T30] audit: type=1400 audit(1753445800.722:71): avc: denied { link } for pid=288 comm="syz-executor218" name="file1" dev="incremental-fs" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 25.895718][ T288] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.895732][ T288] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.903702][ T30] audit: type=1400 audit(1753445800.722:72): avc: denied { read write } for pid=288 comm="syz-executor218" name="file3" dev="incremental-fs" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 25.926505][ T288] Call Trace: [ 25.926518][ T288] [ 25.926526][ T288] vfs_getattr+0x29/0x310 [ 25.926553][ T288] ovl_copy_up_flags+0x3d9/0x1b20 [ 25.926577][ T288] ? ovl_maybe_copy_up+0x190/0x190 [ 25.934590][ T30] audit: type=1400 audit(1753445800.722:73): avc: denied { open } for pid=288 comm="syz-executor218" path="/root/file0/file3" dev="incremental-fs" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 25.942533][ T288] ? is_bpf_text_address+0x177/0x190 [ 25.942558][ T288] ? __kernel_text_address+0xa0/0x100 [ 26.123772][ T288] ? unwind_get_return_address+0x4d/0x90 [ 26.129412][ T288] ? stack_trace_save+0xe0/0xe0 [ 26.134273][ T288] ? arch_stack_walk+0xee/0x140 [ 26.139126][ T288] ? stack_trace_save+0x98/0xe0 [ 26.143970][ T288] ? memcpy+0x56/0x70 [ 26.147954][ T288] ? avc_has_perm_noaudit+0x2f4/0x460 [ 26.153349][ T288] ? avc_denied+0x1b0/0x1b0 [ 26.157847][ T288] ? slab_post_alloc_hook+0x4f/0x2b0 [ 26.163130][ T288] ? vfs_open+0x73/0x80 [ 26.167284][ T288] ? mnt_want_write+0x20b/0x2e0 [ 26.172126][ T288] ovl_maybe_copy_up+0x160/0x190 [ 26.177051][ T288] ovl_open+0x9d/0x1f0 [ 26.181110][ T288] ? ovl_mmap+0x4d0/0x4d0 [ 26.185429][ T288] do_dentry_open+0x834/0x1010 [ 26.190190][ T288] dentry_open+0xbb/0x100 [ 26.194514][ T288] file_open+0x298/0x630 [ 26.198746][ T288] ? incfs_file_mmap+0x130/0x130 [ 26.203672][ T288] ? incfs_file_mmap+0x130/0x130 [ 26.208600][ T288] do_dentry_open+0x834/0x1010 [ 26.213379][ T288] vfs_open+0x73/0x80 [ 26.217357][ T288] path_openat+0x2646/0x2f10 [ 26.221934][ T288] ? __update_load_avg_cfs_rq+0xaf/0x2f0 [ 26.227561][ T288] ? slab_post_alloc_hook+0x4f/0x2b0 [ 26.232848][ T288] ? kmem_cache_alloc+0xf7/0x260 [ 26.237795][ T288] ? do_syscall_64+0x4c/0xa0 [ 26.242394][ T288] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 26.248461][ T288] ? do_filp_open+0x3e0/0x3e0 [ 26.253135][ T288] do_filp_open+0x1b3/0x3e0 [ 26.257646][ T288] ? vfs_tmpfile+0x2d0/0x2d0 [ 26.262234][ T288] do_sys_openat2+0x14c/0x7b0 [ 26.266904][ T288] ? _raw_spin_unlock_irq+0x4e/0x70 [ 26.272093][ T288] ? do_sys_open+0xe0/0xe0 [ 26.276507][ T288] ? do_notify_parent+0x800/0x800 [ 26.281535][ T288] __x64_sys_openat+0x136/0x160 [ 26.286383][ T288] x64_sys_call+0x219/0x9a0 [ 26.290896][ T288] do_syscall_64+0x4c/0xa0 [ 26.295312][ T288] ? clear_bhb_loop+0x50/0xa0 [ 26.299983][ T288] ? clear_bhb_loop+0x50/0xa0 [ 26.304653][ T288] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 26.310564][ T288] RIP: 0033:0x7f85a8e7e159 [ 26.314978][ T288] Code: 48 83 c4 28 c3 e8 67 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 [ 26.334580][ T288] RSP: 002b:00007fffe592a7f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 26.343420][ T288] RAX: ffffffffffffffda RBX: 0073662d6c61746e RCX: 00007f85a8e7e159 [ 26.351393][ T288] RDX: 0000000000000002 RSI: 0000200000000080 RDI: 0000000000000004 [ 26.359358][ T288] RBP: 00007fffe592a808 R08: 00007f85a8e4b150 R09: 00007f85a8e4b150 [ 26.367527][ T288] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 26.375489][ T288] R13: 00007fffe592aa68 R14: 0000000000000001 R15: 0000000000000001 [ 26.383568][ T288] [ 26.386579][ T288] Modules linked in: [ 26.390695][ T288] ---[ end trace d97d5beb8d62745c ]--- [ 26.396215][ T288] RIP: 0010:security_inode_getattr+0x47/0x130 [ 26.402303][ T288] Code: 48 ff 4c 8d 73 08 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 67 a8 86 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 4a a8 86 ff 4d 8b 36 49 83 c6 0c [ 26.422432][ T288] RSP: 0018:ffffc900009970e0 EFLAGS: 00010206 [ 26.428573][ T288] RAX: 0000000000000006 RBX: ffffc900009974d0 RCX: ffff8881063ccf00 [ 26.436574][ T288] RDX: 0000000000000000 RSI: ffffc900009974e0 RDI: ffffc900009974d0 [ 26.444555][ T288] RBP: ffffc90000997108 R08: dffffc0000000000 R09: ffffc900009974d0 [ 26.452559][ T288] R10: 0000000000000000 R11: 0000000000000020 R12: ffffc900009974d0 [ 26.460586][ T288] R13: dffffc0000000000 R14: 0000000000000030 R15: ffffc90000997480 [ 26.468585][ T288] FS: 000055558857c480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 26.477546][ T288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.484129][ T288] CR2: 0000000000000000 CR3: 00000001258e7000 CR4: 00000000003506b0 [ 26.492122][ T288] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.500115][ T288] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.508105][ T288] Kernel panic - not syncing: Fatal exception [ 26.514401][ T288] Kernel Offset: disabled [ 26.518732][ T288] Rebooting in 86400 seconds..