./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3128955331 <...> Warning: Permanently added '10.128.0.235' (ED25519) to the list of known hosts. execve("./syz-executor3128955331", ["./syz-executor3128955331"], 0x7ffe9150b920 /* 10 vars */) = 0 brk(NULL) = 0x555588780000 brk(0x555588780d00) = 0x555588780d00 arch_prctl(ARCH_SET_FS, 0x555588780380) = 0 set_tid_address(0x555588780650) = 5841 set_robust_list(0x555588780660, 24) = 0 rseq(0x555588780ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3128955331", 4096) = 28 getrandom("\x55\x78\x6d\x9d\xc9\x55\xac\xb8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555588780d00 brk(0x5555887a1d00) = 0x5555887a1d00 brk(0x5555887a2000) = 0x5555887a2000 mprotect(0x7fd2fb4f9000, 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 5842 attached [pid 5842] set_robust_list(0x555588780660, 24) = 0 [pid 5841] <... clone resumed>, child_tidptr=0x555588780650) = 5842 [pid 5842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5842] setpgid(0, 0) = 0 [pid 5842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5842] write(3, "1000", 4) = 4 [pid 5842] close(3) = 0 [pid 5842] write(1, "executing program\n", 18executing program ) = 18 [pid 5842] memfd_create("syzkaller", 0) = 3 [pid 5842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd2f3000000 [pid 5842] 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 5842] munmap(0x7fd2f3000000, 138412032) = 0 [pid 5842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5842] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5842] close(3) = 0 [pid 5842] close(4) = 0 [pid 5842] mkdir("./file0", 0777) = 0 [pid 5842] mount("/dev/loop0", "./file0", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_POSIXACL|MS_LAZYTIME, "iocharset=cp737,umask=0") = 0 [pid 5842] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5842] chdir("./file0") = 0 [pid 5842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 89.746865][ T5842] loop0: detected capacity change from 0 to 32768 [ 89.787689][ T5842] VFS_BUG_ON_INODE(!IS_ANON_FILE(inode)) encountered for inode ffff888074563b80 [ 89.787951][ T5842] ------------[ cut here ]------------ [ 89.803316][ T5842] kernel BUG at fs/namei.c:3483! [ 89.809118][ T5842] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 89.815416][ T5842] CPU: 1 UID: 0 PID: 5842 Comm: syz-executor312 Not tainted 6.16.0-rc5-syzkaller #0 PREEMPT(full) [ 89.826125][ T5842] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 89.836222][ T5842] RIP: 0010:may_open+0x4b1/0x4c0 [ 89.841207][ 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 [ 89.860828][ T5842] RSP: 0018:ffffc90003f9f940 EFLAGS: 00010246 [ 89.866910][ T5842] RAX: 000000000000004d RBX: dffffc0000000000 RCX: 38ee95b4de8dbc00 [ 89.874894][ T5842] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 89.882875][ T5842] RBP: 000000000012d042 R08: ffff8880b8724293 R09: 1ffff110170e4852 [ 89.890864][ T5842] R10: dffffc0000000000 R11: ffffed10170e4853 R12: 0000000000000000 [ 89.898849][ T5842] R13: ffffffff8e29ca80 R14: ffff888074563b80 R15: 0000000000000006 [ 89.906840][ T5842] FS: 0000555588780380(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000 [ 89.915782][ T5842] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.922378][ T5842] CR2: 000055ba3e8dd490 CR3: 0000000072990000 CR4: 00000000003526f0 [ 89.930364][ T5842] Call Trace: [ 89.933653][ T5842] [ 89.936608][ T5842] path_openat+0x2d91/0x3830 [ 89.941215][ T5842] ? arch_stack_walk+0xfc/0x150 [ 89.946095][ T5842] ? __pfx_path_openat+0x10/0x10 [ 89.951046][ T5842] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.957131][ T5842] do_filp_open+0x1fa/0x410 [ 89.961647][ T5842] ? __lock_acquire+0xab9/0xd20 [ 89.966512][ T5842] ? __pfx_do_filp_open+0x10/0x10 [ 89.971556][ T5842] ? _raw_spin_unlock+0x28/0x50 [ 89.976435][ T5842] ? alloc_fd+0x64c/0x6c0 [ 89.980789][ T5842] do_sys_openat2+0x121/0x1c0 [ 89.985479][ T5842] ? __pfx_do_sys_openat2+0x10/0x10 [ 89.990689][ T5842] ? rcu_is_watching+0x15/0xb0 [ 89.995464][ T5842] __x64_sys_openat+0x138/0x170 [ 90.000328][ T5842] do_syscall_64+0xfa/0x3b0 [ 90.004843][ T5842] ? lockdep_hardirqs_on+0x9c/0x150 [ 90.010062][ T5842] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.016137][ T5842] ? clear_bhb_loop+0x60/0xb0 [ 90.020826][ T5842] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.026729][ T5842] RIP: 0033:0x7fd2fb47edd9 [ 90.031168][ T5842] 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 [ 90.050785][ T5842] RSP: 002b:00007fff1415ad48 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 90.059212][ T5842] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd2fb47edd9 [ 90.067196][ T5842] RDX: 0000000000125042 RSI: 0000200000000100 RDI: 00000000ffffff9c [ 90.075198][ T5842] RBP: 00007fd2fb4f95f0 R08: 0000000000006155 R09: 00005555887814c0 [ 90.083183][ T5842] R10: 0000000000000007 R11: 0000000000000246 R12: 00007fff1415ad70 [ 90.091163][ T5842] R13: 00007fff1415af98 R14: 431bde82d7b634db R15: 00007fd2fb4c803b [ 90.099150][ T5842] [ 90.102175][ T5842] Modules linked in: [ 90.106450][ T5842] ---[ end trace 0000000000000000 ]--- [ 90.112459][ T5842] RIP: 0010:may_open+0x4b1/0x4c0 [ 90.117457][ 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 [ 90.137190][ T5842] RSP: 0018:ffffc90003f9f940 EFLAGS: 00010246 [ 90.143348][ T5842] RAX: 000000000000004d RBX: dffffc0000000000 RCX: 38ee95b4de8dbc00 [ 90.151373][ T5842] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 90.159405][ T5842] RBP: 000000000012d042 R08: ffff8880b8724293 R09: 1ffff110170e4852 [ 90.167384][ T5842] R10: dffffc0000000000 R11: ffffed10170e4853 R12: 0000000000000000 [ 90.175411][ T5842] R13: ffffffff8e29ca80 R14: ffff888074563b80 R15: 0000000000000006 [ 90.183460][ T5842] FS: 0000555588780380(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000 [ 90.192461][ T5842] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.199121][ T5842] CR2: 000055ba3e8dd490 CR3: 0000000072990000 CR4: 00000000003526f0 [ 90.207120][ T5842] Kernel panic - not syncing: Fatal exception [ 90.213530][ T5842] Kernel Offset: disabled [ 90.217863][ T5842] Rebooting in 86400 seconds..