./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3044493445 <...> Warning: Permanently added '10.128.0.89' (ED25519) to the list of known hosts. execve("./syz-executor3044493445", ["./syz-executor3044493445"], 0x7ffef8c33410 /* 10 vars */) = 0 brk(NULL) = 0x55557da81000 brk(0x55557da81d00) = 0x55557da81d00 arch_prctl(ARCH_SET_FS, 0x55557da81380) = 0 set_tid_address(0x55557da81650) = 5847 set_robust_list(0x55557da81660, 24) = 0 rseq(0x55557da81ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3044493445", 4096) = 28 getrandom("\x06\x3c\x47\xff\xe1\xcb\x75\x70", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557da81d00 brk(0x55557daa2d00) = 0x55557daa2d00 brk(0x55557daa3000) = 0x55557daa3000 mprotect(0x7f6504536000, 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 write(1, "executing program\n", 18executing program ) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f64fc000000 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"..., 1048576) = 1048576 munmap(0x7f64fc000000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./bus", 0777) = 0 [ 92.206234][ T5847] loop0: detected capacity change from 0 to 2048 [ 92.229302][ T5840] udevd[5840]: incorrect nilfs2 checksum on /dev/loop0 mount("/dev/loop0", "./bus", "nilfs2", MS_SYNCHRONOUS, "") = 0 openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 chdir("./bus") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 92.248756][ T5847] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 92.266124][ T5848] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 92.321783][ T5847] VFS_BUG_ON_INODE(!IS_ANON_FILE(inode)) encountered for inode ffff8880738d2df8 [ 92.321896][ T5847] ------------[ cut here ]------------ [ 92.336461][ T5847] kernel BUG at fs/namei.c:3483! [ 92.341403][ T5847] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 92.347629][ T5847] CPU: 0 UID: 0 PID: 5847 Comm: syz-executor304 Not tainted 6.16.0-rc5-syzkaller #0 PREEMPT(full) [ 92.358273][ T5847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 92.368309][ T5847] RIP: 0010:may_open+0x4b1/0x4c0 [ 92.373241][ T5847] 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 [ 92.392828][ T5847] RSP: 0018:ffffc9000427f940 EFLAGS: 00010246 [ 92.398870][ T5847] RAX: 000000000000004d RBX: dffffc0000000000 RCX: 5f820b2adee7a100 [ 92.406824][ T5847] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 92.414773][ T5847] RBP: 0000000000008000 R08: ffff8880b8624293 R09: 1ffff110170c4852 [ 92.422720][ T5847] R10: dffffc0000000000 R11: ffffed10170c4853 R12: 0000000000000000 [ 92.430666][ T5847] R13: ffffffff8e29ca80 R14: ffff8880738d2df8 R15: 0000000000000004 [ 92.438612][ T5847] FS: 000055557da81380(0000) GS:ffff888125c51000(0000) knlGS:0000000000000000 [ 92.447517][ T5847] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.454074][ T5847] CR2: 000000000066c7e0 CR3: 0000000077434000 CR4: 00000000003526f0 [ 92.462023][ T5847] Call Trace: [ 92.465280][ T5847] [ 92.468193][ T5847] path_openat+0x2d91/0x3830 [ 92.472760][ T5847] ? arch_stack_walk+0xfc/0x150 [ 92.477592][ T5847] ? __pfx_path_openat+0x10/0x10 [ 92.482502][ T5847] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.488547][ T5847] do_filp_open+0x1fa/0x410 [ 92.493025][ T5847] ? __lock_acquire+0xab9/0xd20 [ 92.497853][ T5847] ? __pfx_do_filp_open+0x10/0x10 [ 92.502860][ T5847] ? _raw_spin_unlock+0x28/0x50 [ 92.507698][ T5847] ? alloc_fd+0x64c/0x6c0 [ 92.512012][ T5847] do_sys_openat2+0x121/0x1c0 [ 92.516668][ T5847] ? __pfx_do_sys_openat2+0x10/0x10 [ 92.521842][ T5847] ? rcu_is_watching+0x15/0xb0 [ 92.526581][ T5847] __x64_sys_openat+0x138/0x170 [ 92.531405][ T5847] do_syscall_64+0xfa/0x3b0 [ 92.535881][ T5847] ? lockdep_hardirqs_on+0x9c/0x150 [ 92.541056][ T5847] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.547096][ T5847] ? clear_bhb_loop+0x60/0xb0 [ 92.551749][ T5847] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.557613][ T5847] RIP: 0033:0x7f65044c2639 [ 92.562010][ T5847] 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 [ 92.581591][ T5847] RSP: 002b:00007ffe1401f7c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 92.589977][ T5847] RAX: ffffffffffffffda RBX: 00007ffe1401f9a8 RCX: 00007f65044c2639 [ 92.597926][ T5847] RDX: 0000000000000000 RSI: 00002000000003c0 RDI: ffffffffffffff9c [ 92.605872][ T5847] RBP: 00007f6504536610 R08: 0000000000000a7a R09: 0000000000000000 [ 92.613816][ T5847] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 92.621760][ T5847] R13: 00007ffe1401f998 R14: 0000000000000001 R15: 0000000000000001 [ 92.629709][ T5847] [ 92.632704][ T5847] Modules linked in: [ 92.636833][ T5847] ---[ end trace 0000000000000000 ]--- [ 92.642379][ T5847] RIP: 0010:may_open+0x4b1/0x4c0 [ 92.647368][ T5847] 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 [ 92.666997][ T5847] RSP: 0018:ffffc9000427f940 EFLAGS: 00010246 [ 92.673083][ T5847] RAX: 000000000000004d RBX: dffffc0000000000 RCX: 5f820b2adee7a100 [ 92.681043][ T5847] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 92.689021][ T5847] RBP: 0000000000008000 R08: ffff8880b8624293 R09: 1ffff110170c4852 [ 92.697017][ T5847] R10: dffffc0000000000 R11: ffffed10170c4853 R12: 0000000000000000 [ 92.704995][ T5847] R13: ffffffff8e29ca80 R14: ffff8880738d2df8 R15: 0000000000000004 [ 92.712958][ T5847] FS: 000055557da81380(0000) GS:ffff888125c51000(0000) knlGS:0000000000000000 [ 92.721893][ T5847] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.728499][ T5847] CR2: 000000000066c7e0 CR3: 0000000077434000 CR4: 00000000003526f0 [ 92.736496][ T5847] Kernel panic - not syncing: Fatal exception [ 92.742797][ T5847] Kernel Offset: disabled [ 92.747116][ T5847] Rebooting in 86400 seconds..