./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3247698070 <...> Warning: Permanently added '10.128.1.150' (ED25519) to the list of known hosts. execve("./syz-executor3247698070", ["./syz-executor3247698070"], 0x7ffd83ac9270 /* 10 vars */) = 0 brk(NULL) = 0x55558fe4d000 brk(0x55558fe4dd00) = 0x55558fe4dd00 arch_prctl(ARCH_SET_FS, 0x55558fe4d380) = 0 set_tid_address(0x55558fe4d650) = 5842 set_robust_list(0x55558fe4d660, 24) = 0 rseq(0x55558fe4dca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3247698070", 4096) = 28 getrandom("\xff\x98\xbe\x61\x15\xa8\x5c\xc4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558fe4dd00 brk(0x55558fe6ed00) = 0x55558fe6ed00 brk(0x55558fe6f000) = 0x55558fe6f000 mprotect(0x7ff3e0b93000, 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 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff3d8600000 write(3, "\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\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 376832) = 376832 munmap(0x7ff3d8600000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file1", 0777) = 0 syzkaller login: [ 79.915002][ T5842] loop0: detected capacity change from 0 to 736 [ 79.948134][ T5842] ======================================================= [ 79.948134][ T5842] WARNING: The mand mount option has been deprecated and mount("/dev/loop0", "./file1", "iso9660", MS_RDONLY|MS_NOEXEC|MS_MANDLOCK|MS_NOATIME|MS_NODIRATIME|MS_SILENT, "") = 0 openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 chdir("./file1") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 79.948134][ T5842] and is ignored by this kernel. Remove the mand [ 79.948134][ T5842] option from the mount to silence this warning. [ 79.948134][ T5842] ======================================================= [ 80.006871][ T5842] VFS_BUG_ON_INODE(!IS_ANON_FILE(inode)) encountered for inode ffff888075554568 [ 80.006984][ T5842] ------------[ cut here ]------------ [ 80.022610][ T5842] kernel BUG at fs/namei.c:3483! [ 80.027705][ T5842] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 80.033969][ T5842] CPU: 1 UID: 0 PID: 5842 Comm: syz-executor324 Not tainted 6.16.0-rc5-syzkaller #0 PREEMPT(full) [ 80.044617][ T5842] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 80.054659][ T5842] RIP: 0010:may_open+0x4b1/0x4c0 [ 80.059596][ T5842] Code: 38 c1 0f 8c 1e fd ff ff 4c 89 e7 e8 69 25 ec ff e9 11 fd ff ff e8 9f cd 8a ff 4c 89 f7 48 c7 c6 40 40 99 8b e8 70 cb f2 fe 90 <0f> 0b 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 [ 80.079200][ T5842] RSP: 0018:ffffc90004127940 EFLAGS: 00010246 [ 80.085262][ T5842] RAX: 000000000000004d RBX: dffffc0000000000 RCX: 3f616dc4bb55cb00 [ 80.093230][ T5842] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 80.101181][ T5842] RBP: 000000000010f842 R08: ffff8880b8624293 R09: 1ffff110170c4852 [ 80.109132][ T5842] R10: dffffc0000000000 R11: ffffed10170c4853 R12: 0000000000000000 [ 80.117083][ T5842] R13: ffffffff8e29ca80 R14: ffff888075554568 R15: 0000000000000006 [ 80.125044][ T5842] FS: 000055558fe4d380(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000 [ 80.133955][ T5842] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.140516][ T5842] CR2: 000000000066c7e0 CR3: 0000000074c40000 CR4: 00000000003526f0 [ 80.148469][ T5842] Call Trace: [ 80.151732][ T5842] [ 80.154647][ T5842] path_openat+0x2d91/0x3830 [ 80.159227][ T5842] ? arch_stack_walk+0xfc/0x150 [ 80.164062][ T5842] ? __pfx_path_openat+0x10/0x10 [ 80.168980][ T5842] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.175030][ T5842] do_filp_open+0x1fa/0x410 [ 80.179513][ T5842] ? __lock_acquire+0xab9/0xd20 [ 80.184340][ T5842] ? __pfx_do_filp_open+0x10/0x10 [ 80.189346][ T5842] ? _raw_spin_unlock+0x28/0x50 [ 80.194189][ T5842] ? alloc_fd+0x64c/0x6c0 [ 80.198591][ T5842] do_sys_openat2+0x121/0x1c0 [ 80.203253][ T5842] ? __pfx_do_sys_openat2+0x10/0x10 [ 80.208432][ T5842] ? rcu_is_watching+0x15/0xb0 [ 80.213175][ T5842] __x64_sys_openat+0x138/0x170 [ 80.218004][ T5842] do_syscall_64+0xfa/0x3b0 [ 80.222489][ T5842] ? lockdep_hardirqs_on+0x9c/0x150 [ 80.227668][ T5842] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.233715][ T5842] ? clear_bhb_loop+0x60/0xb0 [ 80.238375][ T5842] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.244262][ T5842] RIP: 0033:0x7ff3e0b20679 [ 80.248691][ T5842] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 b8 ff ff ff f7 d8 64 89 01 48 [ 80.268286][ T5842] RSP: 002b:00007ffc3b0b1508 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 80.276679][ T5842] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007ff3e0b20679 [ 80.284631][ T5842] RDX: 0000000000107842 RSI: 0000200000000040 RDI: 00000000ffffff9c [ 80.292584][ T5842] RBP: 00007ff3e0b93610 R08: 00000000000005b3 R09: 0000000000000000 [ 80.300534][ T5842] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 80.308483][ T5842] R13: 00007ffc3b0b16d8 R14: 0000000000000001 R15: 0000000000000001 [ 80.316443][ T5842] [ 80.319443][ T5842] Modules linked in: [ 80.323603][ T5842] ---[ end trace 0000000000000000 ]--- [ 80.329550][ T5842] RIP: 0010:may_open+0x4b1/0x4c0 [ 80.334720][ T5842] Code: 38 c1 0f 8c 1e fd ff ff 4c 89 e7 e8 69 25 ec ff e9 11 fd ff ff e8 9f cd 8a ff 4c 89 f7 48 c7 c6 40 40 99 8b e8 70 cb f2 fe 90 <0f> 0b 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 [ 80.354593][ T5842] RSP: 0018:ffffc90004127940 EFLAGS: 00010246 [ 80.360651][ T5842] RAX: 000000000000004d RBX: dffffc0000000000 RCX: 3f616dc4bb55cb00 [ 80.368910][ T5842] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 80.377801][ T5842] RBP: 000000000010f842 R08: ffff8880b8624293 R09: 1ffff110170c4852 [ 80.385844][ T5842] R10: dffffc0000000000 R11: ffffed10170c4853 R12: 0000000000000000 [ 80.393855][ T5842] R13: ffffffff8e29ca80 R14: ffff888075554568 R15: 0000000000000006 [ 80.401810][ T5842] FS: 000055558fe4d380(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000 [ 80.410800][ T5842] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.417407][ T5842] CR2: 00005617510f6168 CR3: 0000000074c40000 CR4: 00000000003526f0 [ 80.425433][ T5842] Kernel panic - not syncing: Fatal exception [ 80.431636][ T5842] Kernel Offset: disabled [ 80.435950][ T5842] Rebooting in 86400 seconds..