./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1654360641 <...> Warning: Permanently added '10.128.0.170' (ED25519) to the list of known hosts. execve("./syz-executor1654360641", ["./syz-executor1654360641"], 0x7fff577ba240 /* 10 vars */) = 0 brk(NULL) = 0x555557502000 brk(0x555557502d00) = 0x555557502d00 arch_prctl(ARCH_SET_FS, 0x555557502380) = 0 set_tid_address(0x555557502650) = 5062 set_robust_list(0x555557502660, 24) = 0 rseq(0x555557502ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1654360641", 4096) = 28 getrandom("\x03\x7a\x66\x81\xcc\x8b\x2e\xdb", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557502d00 brk(0x555557523d00) = 0x555557523d00 brk(0x555557524000) = 0x555557524000 mprotect(0x7f3b94c30000, 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) = 0x7f3b8c600000 write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 munmap(0x7f3b8c600000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 56.574216][ T5062] loop0: detected capacity change from 0 to 4096 [ 56.583934][ T5062] ======================================================= [ 56.583934][ T5062] WARNING: The mand mount option has been deprecated and [ 56.583934][ T5062] and is ignored by this kernel. Remove the mand [ 56.583934][ T5062] option from the mount to silence this warning. [ 56.583934][ T5062] ======================================================= mount("/dev/loop0", "./file0", "ntfs3", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_MANDLOCK|MS_NODIRATIME|MS_POSIXACL|MS_RELATIME|MS_STRICTATIME|MS_LAZYTIME, "") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 openat(AT_FDCWD, "./file0", O_RDWR|O_CREAT|O_NONBLOCK|O_NOFOLLOW, 000) = 4 ftruncate(4, 0) = 0 [ 56.620640][ T5062] ntfs3: loop0: Different NTFS sector size (4096) and media sector size (512). [ 56.641555][ T5062] ntfs3: loop0: Mark volume as dirty due to NTFS errors [ 56.676848][ T5062] [ 56.679190][ T5062] ============================================ [ 56.685341][ T5062] WARNING: possible recursive locking detected [ 56.691478][ T5062] 6.7.0-rc8-syzkaller-00174-g95c8a35f1c01 #0 Not tainted [ 56.698480][ T5062] -------------------------------------------- [ 56.704599][ T5062] syz-executor165/5062 is trying to acquire lock: [ 56.710986][ T5062] ffff88807a969e80 (&ni->ni_lock/4){+.+.}-{3:3}, at: mi_read+0x462/0x650 [ 56.719413][ T5062] [ 56.719413][ T5062] but task is already holding lock: [ 56.726746][ T5062] ffff88807a96e840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0x1b8/0x2a0 [ 56.735507][ T5062] [ 56.735507][ T5062] other info that might help us debug this: [ 56.743550][ T5062] Possible unsafe locking scenario: [ 56.743550][ T5062] [ 56.750980][ T5062] CPU0 [ 56.754240][ T5062] ---- [ 56.757502][ T5062] lock(&ni->ni_lock/4); [ 56.761819][ T5062] lock(&ni->ni_lock/4); [ 56.766139][ T5062] [ 56.766139][ T5062] *** DEADLOCK *** [ 56.766139][ T5062] [ 56.774267][ T5062] May be due to missing lock nesting notation [ 56.774267][ T5062] [ 56.782565][ T5062] 2 locks held by syz-executor165/5062: [ 56.788092][ T5062] #0: ffff88807a96eae0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: walk_component+0x33b/0x5a0 [ 56.798443][ T5062] #1: ffff88807a96e840 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0x1b8/0x2a0 [ 56.807655][ T5062] [ 56.807655][ T5062] stack backtrace: [ 56.813521][ T5062] CPU: 1 PID: 5062 Comm: syz-executor165 Not tainted 6.7.0-rc8-syzkaller-00174-g95c8a35f1c01 #0 [ 56.823912][ T5062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 56.833952][ T5062] Call Trace: [ 56.837215][ T5062] [ 56.840135][ T5062] dump_stack_lvl+0xd9/0x1b0 [ 56.844724][ T5062] __lock_acquire+0x20f8/0x3b20 [ 56.849573][ T5062] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 56.855547][ T5062] lock_acquire+0x1ae/0x520 [ 56.860042][ T5062] ? mi_read+0x462/0x650 [ 56.864274][ T5062] ? lock_sync+0x190/0x190 [ 56.868683][ T5062] ? preempt_count_sub+0x160/0x160 [ 56.873799][ T5062] ? ntfs_read_run_nb+0x686/0x9d0 [ 56.878825][ T5062] __mutex_lock+0x175/0x9d0 [ 56.883322][ T5062] ? mi_read+0x462/0x650 [ 56.887552][ T5062] ? down_write_trylock+0x3d0/0x3d0 [ 56.892739][ T5062] ? find_held_lock+0x2d/0x110 [ 56.897492][ T5062] ? mi_read+0x462/0x650 [ 56.901718][ T5062] ? mutex_trylock+0x130/0x130 [ 56.906466][ T5062] ? down_write_nested+0x50/0x50 [ 56.911394][ T5062] ? mi_read+0x462/0x650 [ 56.915624][ T5062] mi_read+0x462/0x650 [ 56.919681][ T5062] ntfs_iget5+0x4be/0x3810 [ 56.924086][ T5062] ? ntfs_write_end+0x950/0x950 [ 56.928923][ T5062] ? indx_free_children.isra.0+0x6b0/0x6b0 [ 56.934720][ T5062] dir_search_u+0x162/0x3d0 [ 56.939299][ T5062] ? ntfs_nls_to_utf16+0x6e0/0x6e0 [ 56.944400][ T5062] ? trace_kmem_cache_alloc+0x26/0xa0 [ 56.949771][ T5062] ? kmem_cache_alloc+0x1af/0x2f0 [ 56.954783][ T5062] ? lockdep_init_map_type+0x16d/0x7d0 [ 56.960236][ T5062] ntfs_lookup+0x1c5/0x2a0 [ 56.964648][ T5062] __lookup_slow+0x24d/0x450 [ 56.969228][ T5062] ? lookup_open.isra.0+0x13b0/0x13b0 [ 56.974586][ T5062] ? secondary_startup_64_no_verify+0x11b/0x17b [ 56.980822][ T5062] ? secondary_startup_64_no_verify+0x11b/0x17b [ 56.987054][ T5062] ? lookup_fast+0x155/0x520 [ 56.991637][ T5062] walk_component+0x349/0x5a0 [ 56.996303][ T5062] path_lookupat+0x17f/0x770 [ 57.000884][ T5062] filename_lookup+0x1e7/0x5b0 [ 57.005638][ T5062] ? may_linkat+0x340/0x340 [ 57.010140][ T5062] ? preempt_count_sub+0x160/0x160 [ 57.015235][ T5062] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 57.021202][ T5062] ? __virt_addr_valid+0x5e/0x2d0 [ 57.026212][ T5062] ? __phys_addr_symbol+0x30/0x70 [ 57.031228][ T5062] ? __check_object_size+0x323/0x730 [ 57.036501][ T5062] vfs_statx+0x132/0x440 [ 57.040735][ T5062] ? inode_sub_bytes+0x100/0x100 [ 57.045663][ T5062] vfs_fstatat+0xb3/0x140 [ 57.049984][ T5062] __do_sys_newfstatat+0x98/0x110 [ 57.054998][ T5062] ? __do_compat_sys_newlstat+0x110/0x110 [ 57.060715][ T5062] ? ptrace_notify+0xf4/0x130 [ 57.065381][ T5062] ? _raw_spin_unlock_irq+0x2e/0x50 [ 57.070566][ T5062] ? ptrace_notify+0xf4/0x130 [ 57.075227][ T5062] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 57.081456][ T5062] do_syscall_64+0x40/0x110 [ 57.085952][ T5062] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 57.091831][ T5062] RIP: 0033:0x7f3b94b9e639 [ 57.096228][ T5062] 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 [ 57.116169][ T5062] RSP: 002b:00007ffd957f67a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 newfstatat(AT_FDCWD, "./file1", NULL, 0) = -1 ENOENT (No such file or directory) exit_group(0) = ? +++ exited with 0 +++ [ 57.124651][ T5062] RAX: ffffffffffffffda RBX: