./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2072540013 <...> Warning: Permanently added '10.128.10.15' (ED25519) to the list of known hosts. execve("./syz-executor2072540013", ["./syz-executor2072540013"], 0x7ffd4a45b710 /* 10 vars */) = 0 brk(NULL) = 0x555555d51000 brk(0x555555d51d00) = 0x555555d51d00 arch_prctl(ARCH_SET_FS, 0x555555d51380) = 0 set_tid_address(0x555555d51650) = 5067 set_robust_list(0x555555d51660, 24) = 0 rseq(0x555555d51ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2072540013", 4096) = 28 getrandom("\x94\xa4\x3b\xa9\x9d\x43\xdc\x24", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555d51d00 brk(0x555555d72d00) = 0x555555d72d00 brk(0x555555d73000) = 0x555555d73000 mprotect(0x7f61c4138000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f61bbc87000 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"..., 262144) = 262144 munmap(0x7f61bbc87000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 55.965725][ T5067] loop0: detected capacity change from 0 to 512 [ 55.985871][ T5067] EXT4-fs: Ignoring removed bh option [ 55.993160][ T5067] EXT4-fs (loop0): mounting ext3 file system using the ext4 subsystem [ 56.007682][ T5067] EXT4-fs (loop0): 1 truncate cleaned up mount("/dev/loop0", "./file0", "ext3", MS_MGC_VAL|MS_NOSUID|MS_NODEV, "jqfmt=vfsold,resgid=0x000000000000ee00,bh,noload,data_err=ignore,usrjquota=,,errors=continue") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 creat("./bus", 000) = 4 mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 open("./bus", O_RDWR|O_NOCTTY|O_SYNC|O_DIRECT|O_CLOEXEC) = 5 mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 io_submit(NULL, 1, 0x20000900) = -1 EINVAL (Invalid argument) [ 56.013386][ T5067] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 56.059161][ T5067] ------------[ cut here ]------------ [ 56.064858][ T5067] WARNING: CPU: 1 PID: 5067 at fs/inode.c:1148 lock_two_nondirectories+0xca/0x100 [ 56.074440][ T5067] Modules linked in: [ 56.078350][ T5067] CPU: 1 PID: 5067 Comm: syz-executor207 Not tainted 6.7.0-rc5-syzkaller #0 [ 56.087104][ T5067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 56.097191][ T5067] RIP: 0010:lock_two_nondirectories+0xca/0x100 [ 56.103404][ T5067] Code: ff 66 41 81 fc 00 40 74 1b e8 c2 3d 92 ff 48 89 ee 48 89 df 5b 5d b9 04 00 00 00 31 d2 41 5c e9 5c fd ff ff e8 a7 3d 92 ff 90 <0f> 0b 90 eb da e8 9c 3d 92 ff 90 0f 0b 90 eb 83 48 89 df e8 5e e4 [ 56.126931][ T5067] RSP: 0018:ffffc90003a4fc38 EFLAGS: 00010293 [ 56.133064][ T5067] RAX: 0000000000000000 RBX: ffff88807cf82ab0 RCX: ffffffff81f55031 [ 56.141042][ T5067] RDX: ffff888078b21dc0 RSI: ffffffff81f55059 RDI: 0000000000000003 [ 56.149080][ T5067] RBP: ffff88807cfe66b0 R08: 0000000000000003 R09: 0000000000004000 [ 56.157068][ T5067] R10: 0000000000004000 R11: ffffffff915fc8a0 R12: 0000000000004000 [ 56.165089][ T5067] R13: ffff8880298d2c80 R14: ffff88807cfe66b0 R15: ffffffff8d195740 [ 56.173084][ T5067] FS: 0000555555d51380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 56.182052][ T5067] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.188633][ T5067] CR2: 0000000000000000 CR3: 0000000056e5a000 CR4: 0000000000350ef0 [ 56.196722][ T5067] Call Trace: [ 56.200017][ T5067] [ 56.202986][ T5067] ? show_regs+0x8f/0xa0 [ 56.207247][ T5067] ? __warn+0xe6/0x390 [ 56.211669][ T5067] ? lock_two_nondirectories+0xca/0x100 [ 56.217253][ T5067] ? report_bug+0x3bc/0x580 [ 56.221810][ T5067] ? handle_bug+0x3d/0x70 [ 56.226128][ T5067] ? exc_invalid_op+0x17/0x40 [ 56.230782][ T5067] ? asm_exc_invalid_op+0x1a/0x20 [ 56.235832][ T5067] ? lock_two_nondirectories+0xa1/0x100 [ 56.241392][ T5067] ? lock_two_nondirectories+0xc9/0x100 [ 56.247234][ T5067] ? lock_two_nondirectories+0xca/0x100 [ 56.252828][ T5067] ? lock_two_nondirectories+0xc9/0x100 [ 56.258430][ T5067] __ext4_ioctl+0x118d/0x4570 [ 56.263514][ T5067] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 56.269349][ T5067] ? ext4_force_shutdown+0x5d0/0x5d0 [ 56.274684][ T5067] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 56.280617][ T5067] ? do_vfs_ioctl+0x379/0x1920 [ 56.285434][ T5067] ? vfs_fileattr_set+0xbf0/0xbf0 [ 56.290515][ T5067] ? ptrace_notify+0xf4/0x130 [ 56.295226][ T5067] ? restore_fpregs_from_fpstate+0xc1/0x1d0 [ 56.301143][ T5067] ? bpf_lsm_file_ioctl+0x9/0x10 [ 56.306149][ T5067] ? ext4_fileattr_set+0x17a0/0x17a0 [ 56.311449][ T5067] __x64_sys_ioctl+0x18f/0x210 [ 56.316264][ T5067] do_syscall_64+0x40/0x110 [ 56.320781][ T5067] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 56.326725][ T5067] RIP: 0033:0x7f61c40c4af9 [ 56.331143][ T5067] 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 [ 56.350833][ T5067] RSP: 002b:00007ffe0eaa3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 56.359777][ T5067] RAX: ffffffffffffffda RBX: 00007ffe0eaa4198 RCX: 00007f61c40c4af9 [ 56.367888][ T5067] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000004 [ 56.375929][ T5067] RBP: 00007f61c4138610 R08: 0000000000000000 R09: 0000000000000000 [ 56.384080][ T5067] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 56.392109][ T5067] R13: 00007ffe0eaa4188 R14: 0000000000000001 R15: 0000000000000001 [ 56.400137][ T5067] [ 56.403516][ T5067] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 56.410822][ T5067] CPU: 1 PID: 5067 Comm: syz-executor207 Not tainted 6.7.0-rc5-syzkaller #0 [ 56.419473][ T5067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 56.429531][ T5067] Call Trace: [ 56.432807][ T5067] [ 56.435744][ T5067] dump_stack_lvl+0xd9/0x1b0 [ 56.440331][ T5067] panic+0x6dc/0x790 [ 56.444226][ T5067] ? panic_smp_self_stop+0xa0/0xa0 [ 56.449427][ T5067] ? show_trace_log_lvl+0x363/0x4f0 [ 56.454646][ T5067] ? check_panic_on_warn+0x1f/0xb0 [ 56.459748][ T5067] ? lock_two_nondirectories+0xca/0x100 [ 56.465288][ T5067] check_panic_on_warn+0xab/0xb0 [ 56.470216][ T5067] __warn+0xf2/0x390 [ 56.474095][ T5067] ? lock_two_nondirectories+0xca/0x100 [ 56.479630][ T5067] report_bug+0x3bc/0x580 [ 56.483970][ T5067] handle_bug+0x3d/0x70 [ 56.488117][ T5067] exc_invalid_op+0x17/0x40 [ 56.492610][ T5067] asm_exc_invalid_op+0x1a/0x20 [ 56.497447][ T5067] RIP: 0010:lock_two_nondirectories+0xca/0x100 [ 56.503592][ T5067] Code: ff 66 41 81 fc 00 40 74 1b e8 c2 3d 92 ff 48 89 ee 48 89 df 5b 5d b9 04 00 00 00 31 d2 41 5c e9 5c fd ff ff e8 a7 3d 92 ff 90 <0f> 0b 90 eb da e8 9c 3d 92 ff 90 0f 0b 90 eb 83 48 89 df e8 5e e4 [ 56.523184][ T5067] RSP: 0018:ffffc90003a4fc38 EFLAGS: 00010293 [ 56.529249][ T5067] RAX: 0000000000000000 RBX: ffff88807cf82ab0 RCX: ffffffff81f55031 [ 56.537231][ T5067] RDX: ffff888078b21dc0 RSI: ffffffff81f55059 RDI: 0000000000000003 [ 56.545199][ T5067] RBP: ffff88807cfe66b0 R08: 0000000000000003 R09: 0000000000004000 [ 56.553335][ T5067] R10: 0000000000004000 R11: ffffffff915fc8a0 R12: 0000000000004000 [ 56.561295][ T5067] R13: ffff8880298d2c80 R14: ffff88807cfe66b0 R15: ffffffff8d195740 [ 56.569270][ T5067] ? lock_two_nondirectories+0xa1/0x100 [ 56.574819][ T5067] ? lock_two_nondirectories+0xc9/0x100 [ 56.580376][ T5067] ? lock_two_nondirectories+0xc9/0x100 [ 56.585922][ T5067] __ext4_ioctl+0x118d/0x4570 [ 56.590599][ T5067] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 56.596404][ T5067] ? ext4_force_shutdown+0x5d0/0x5d0 [ 56.601711][ T5067] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 56.607607][ T5067] ? do_vfs_ioctl+0x379/0x1920 [ 56.612373][ T5067] ? vfs_fileattr_set+0xbf0/0xbf0 [ 56.617403][ T5067] ? ptrace_notify+0xf4/0x130 [ 56.622077][ T5067] ? restore_fpregs_from_fpstate+0xc1/0x1d0 [ 56.627998][ T5067] ? bpf_lsm_file_ioctl+0x9/0x10 [ 56.632929][ T5067] ? ext4_fileattr_set+0x17a0/0x17a0 [ 56.638259][ T5067] __x64_sys_ioctl+0x18f/0x210 [ 56.643060][ T5067] do_syscall_64+0x40/0x110 [ 56.647592][ T5067] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 56.653525][ T5067] RIP: 0033:0x7f61c40c4af9 [ 56.657932][ T5067] 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 [ 56.677535][ T5067] RSP: 002b:00007ffe0eaa3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 56.685941][ T5067] RAX: ffffffffffffffda RBX: 00007ffe0eaa4198 RCX: 00007f61c40c4af9 [ 56.696251][ T5067] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000004 [ 56.704220][ T5067] RBP: 00007f61c4138610 R08: 0000000000000000 R09: 0000000000000000 [ 56.712184][ T5067] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 56.720148][ T5067] R13: 00007ffe0eaa4188 R14: 0000000000000001 R15: 0000000000000001 [ 56.728143][ T5067] [ 56.731440][ T5067] Kernel Offset: disabled [ 56.735858][ T5067] Rebooting in 86400 seconds..