./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2066235950 <...> Warning: Permanently added '10.128.1.49' (ED25519) to the list of known hosts. execve("./syz-executor2066235950", ["./syz-executor2066235950"], 0x7ffc55bd9960 /* 10 vars */) = 0 brk(NULL) = 0x555557e35000 brk(0x555557e35d00) = 0x555557e35d00 arch_prctl(ARCH_SET_FS, 0x555557e35380) = 0 set_tid_address(0x555557e35650) = 5855 set_robust_list(0x555557e35660, 24) = 0 rseq(0x555557e35ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2066235950", 4096) = 28 getrandom("\x55\x0c\x24\x27\xba\xb7\x0c\xe4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557e35d00 brk(0x555557e56d00) = 0x555557e56d00 brk(0x555557e57000) = 0x555557e57000 mprotect(0x7f36c9950000, 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 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5856 attached [pid 5856] set_robust_list(0x555557e35660, 24) = 0 [pid 5856] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5855] <... clone resumed>, child_tidptr=0x555557e35650) = 5856 [pid 5856] <... prctl resumed>) = 0 [pid 5856] setpgid(0, 0) = 0 [pid 5856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5856] write(3, "1000", 4) = 4 [pid 5856] close(3) = 0 executing program [pid 5856] write(1, "executing program\n", 18) = 18 [pid 5856] memfd_create("syzkaller", 0) = 3 [pid 5856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f36c1400000 [pid 5856] 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"..., 16777216) = 16777216 [pid 5856] munmap(0x7f36c1400000, 138412032) = 0 [pid 5856] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5856] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5856] close(3) = 0 [pid 5856] close(4) = 0 [pid 5856] mkdir("./file0", 0777) = 0 [pid 5856] mount("/dev/loop0", "./file0", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_POSIXACL|MS_LAZYTIME, "iocharset=cp737,umask=0") = 0 [pid 5856] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [ 89.788290][ T5856] loop0: detected capacity change from 0 to 32768 [pid 5856] chdir("./file0") = 0 [pid 5856] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 89.879432][ T5856] VFS_BUG_ON_INODE(!IS_ANON_FILE(inode)) encountered for inode ffff88807fe00430 [ 89.879633][ T5856] ------------[ cut here ]------------ [ 89.895042][ T5856] kernel BUG at fs/namei.c:3474! [ 89.900413][ T5856] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 89.906700][ T5856] CPU: 0 UID: 0 PID: 5856 Comm: syz-executor206 Not tainted 6.16.0-rc5-next-20250711-syzkaller #0 PREEMPT(full) [ 89.918590][ T5856] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 89.928652][ T5856] RIP: 0010:may_open+0x4b1/0x4c0 [ 89.933649][ T5856] Code: 38 c1 0f 8c 1e fd ff ff 4c 89 e7 e8 09 ec eb ff e9 11 fd ff ff e8 8f 35 87 ff 4c 89 f7 48 c7 c6 c0 6d 99 8b e8 50 a6 ef fe 90 <0f> 0b 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 [ 89.953265][ T5856] RSP: 0018:ffffc90003eff940 EFLAGS: 00010246 [ 89.959334][ T5856] RAX: 000000000000004d RBX: dffffc0000000000 RCX: 8db6913a8ac53a00 [ 89.967300][ T5856] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 89.975290][ T5856] RBP: 0000000000048342 R08: ffff8880b8724293 R09: 1ffff110170e4852 [ 89.983277][ T5856] R10: dffffc0000000000 R11: ffffed10170e4853 R12: 0000000000000000 [ 89.991344][ T5856] R13: ffffffff8e29cda0 R14: ffff88807fe00430 R15: 0000000000000006 [ 89.999462][ T5856] FS: 0000555557e35380(0000) GS:ffff888125bc6000(0000) knlGS:0000000000000000 [ 90.008500][ T5856] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.015128][ T5856] CR2: 00007f3612b3f000 CR3: 0000000074f38000 CR4: 00000000003526f0 [ 90.023103][ T5856] Call Trace: [ 90.026386][ T5856] [ 90.029332][ T5856] path_openat+0x2d91/0x3830 [ 90.033930][ T5856] ? arch_stack_walk+0xfc/0x150 [ 90.038797][ T5856] ? __pfx_path_openat+0x10/0x10 [ 90.043734][ T5856] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.049805][ T5856] do_filp_open+0x1fa/0x410 [ 90.054309][ T5856] ? __lock_acquire+0xab9/0xd20 [ 90.059154][ T5856] ? __pfx_do_filp_open+0x10/0x10 [ 90.064184][ T5856] ? _raw_spin_unlock+0x28/0x50 [ 90.069055][ T5856] ? alloc_fd+0x64c/0x6c0 [ 90.073398][ T5856] do_sys_openat2+0x121/0x1c0 [ 90.078093][ T5856] ? __pfx_do_sys_openat2+0x10/0x10 [ 90.083296][ T5856] ? rcu_is_watching+0x15/0xb0 [ 90.088069][ T5856] __x64_sys_openat+0x138/0x170 [ 90.092922][ T5856] do_syscall_64+0xfa/0x3b0 [ 90.097432][ T5856] ? lockdep_hardirqs_on+0x9c/0x150 [ 90.102685][ T5856] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.108757][ T5856] ? clear_bhb_loop+0x60/0xb0 [ 90.113619][ T5856] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.119531][ T5856] RIP: 0033:0x7f36c98d5e19 [ 90.123976][ T5856] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 [ 90.143594][ T5856] RSP: 002b:00007ffed1da8ee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 90.152019][ T5856] RAX: ffffffffffffffda RBX: 00007f36c991f095 RCX: 00007f36c98d5e19 [ 90.160000][ T5856] RDX: 00000000000c0342 RSI: 0000200000000100 RDI: 00000000ffffff9c [ 90.167983][ T5856] RBP: 00007f36c99505f0 R08: 0000000000006155 R09: 0000555557e364c0 [ 90.175960][ T5856] R10: 00000000000001ff R11: 0000000000000246 R12: 00007ffed1da8f10 [ 90.183927][ T5856] R13: 00007ffed1da9138 R14: 431bde82d7b634db R15: 00007f36c991f03b [ 90.191905][ T5856] [ 90.194921][ T5856] Modules linked in: [ 90.199036][ T5856] ---[ end trace 0000000000000000 ]--- [ 90.204552][ T5856] RIP: 0010:may_open+0x4b1/0x4c0 [ 90.209584][ T5856] Code: 38 c1 0f 8c 1e fd ff ff 4c 89 e7 e8 09 ec eb ff e9 11 fd ff ff e8 8f 35 87 ff 4c 89 f7 48 c7 c6 c0 6d 99 8b e8 50 a6 ef fe 90 <0f> 0b 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 [ 90.229248][ T5856] RSP: 0018:ffffc90003eff940 EFLAGS: 00010246 [ 90.235364][ T5856] RAX: 000000000000004d RBX: dffffc0000000000 RCX: 8db6913a8ac53a00 [ 90.243353][ T5856] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 90.251403][ T5856] RBP: 0000000000048342 R08: ffff8880b8724293 R09: 1ffff110170e4852 [ 90.259432][ T5856] R10: dffffc0000000000 R11: ffffed10170e4853 R12: 0000000000000000 [ 90.267452][ T5856] R13: ffffffff8e29cda0 R14: ffff88807fe00430 R15: 0000000000000006 [ 90.275472][ T5856] FS: 0000555557e35380(0000) GS:ffff888125bc6000(0000) knlGS:0000000000000000 [ 90.284420][ T5856] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.291085][ T5856] CR2: 00007f3612b3f000 CR3: 0000000074f38000 CR4: 00000000003526f0 [ 90.299668][ T5856] Kernel panic - not syncing: Fatal exception [ 90.306058][ T5856] Kernel Offset: disabled [ 90.310393][ T5856] Rebooting in 86400 seconds..