Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.175' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   32.542032] hfsplus: xattr searching failed
[   32.546969] 
[   32.548603] ============================================
[   32.554035] WARNING: possible recursive locking detected
[   32.559458] 4.19.211-syzkaller #0 Not tainted
[   32.563925] --------------------------------------------
[   32.569349] syz-executor143/8100 is trying to acquire lock:
[   32.575031] 00000000537ef710 (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_get_block+0x292/0x960
[   32.584550] 
[   32.584550] but task is already holding lock:
[   32.590512] 0000000004359af9 (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_truncate+0x1e2/0x1040
[   32.600464] 
[   32.600464] other info that might help us debug this:
[   32.607102]  Possible unsafe locking scenario:
[   32.607102] 
[   32.613134]        CPU0
[   32.615688]        ----
[   32.618242]   lock(&HFSPLUS_I(inode)->extents_lock);
[   32.623317]   lock(&HFSPLUS_I(inode)->extents_lock);
[   32.628413] 
[   32.628413]  *** DEADLOCK ***
[   32.628413] 
[   32.634448]  May be due to missing lock nesting notation
[   32.634448] 
[   32.641350] 4 locks held by syz-executor143/8100:
[   32.646172]  #0: 00000000264de80a (sb_writers#11){.+.+}, at: mnt_want_write+0x3a/0xb0
[   32.654214]  #1: 00000000d28a9c95 (&sb->s_type->i_mutex_key#17){+.+.}, at: do_truncate+0x125/0x1f0
[   32.663315]  #2: 0000000004359af9 (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_truncate+0x1e2/0x1040
[   32.673699]  #3: 000000007893faa2 (&sbi->alloc_mutex){+.+.}, at: hfsplus_block_free+0xdb/0x5d0
[   32.682430] 
[   32.682430] stack backtrace:
[   32.686907] CPU: 0 PID: 8100 Comm: syz-executor143 Not tainted 4.19.211-syzkaller #0
[   32.694761] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[   32.704088] Call Trace:
[   32.706659]  dump_stack+0x1fc/0x2ef
[   32.710288]  __lock_acquire.cold+0x121/0x57e
[   32.714676]  ? mark_held_locks+0xf0/0xf0
[   32.718740]  ? add_lock_to_list.constprop.0+0x17d/0x330
[   32.724080]  ? save_trace+0xd6/0x290
[   32.727772]  ? __lock_acquire+0x22f9/0x3ff0
[   32.732073]  lock_acquire+0x170/0x3c0
[   32.735854]  ? hfsplus_get_block+0x292/0x960
[   32.740239]  ? hfsplus_get_block+0x292/0x960
[   32.744646]  __mutex_lock+0xd7/0x1190
[   32.748439]  ? hfsplus_get_block+0x292/0x960
[   32.752914]  ? check_preemption_disabled+0x41/0x280
[   32.757908]  ? hfsplus_get_block+0x292/0x960
[   32.762291]  ? mutex_trylock+0x1a0/0x1a0
[   32.766332]  ? create_page_buffers+0x212/0x350
[   32.770892]  ? alloc_page_buffers+0x2da/0x5c0
[   32.775367]  ? lock_downgrade+0x720/0x720
[   32.779489]  ? do_raw_spin_lock+0xcb/0x220
[   32.783703]  hfsplus_get_block+0x292/0x960
[   32.787918]  block_read_full_page+0x288/0xd10
[   32.792408]  ? hfsplus_file_extend+0xf40/0xf40
[   32.796968]  ? __bread_gfp+0x300/0x300
[   32.800834]  ? add_to_page_cache_locked+0x40/0x40
[   32.805654]  do_read_cache_page+0x533/0x1170
[   32.810039]  ? hfsplus_bmap+0x30/0x30
[   32.813815]  hfsplus_block_free+0x18b/0x5d0
[   32.818114]  ? __mutex_unlock_slowpath+0xea/0x610
[   32.823021]  hfsplus_free_extents+0x228/0x520
[   32.827495]  hfsplus_file_truncate+0xd96/0x1040
[   32.832144]  ? hfsplus_get_block+0x960/0x960
[   32.836529]  ? up_write+0x18/0x150
[   32.840045]  ? unmap_mapping_pages+0x121/0x2b0
[   32.844606]  ? inode_newsize_ok+0x121/0x1e0
[   32.848906]  hfsplus_setattr+0x1e7/0x310
[   32.852945]  ? hfsplus_file_open+0x140/0x140
[   32.857330]  notify_change+0x70b/0xfc0
[   32.861194]  do_truncate+0x134/0x1f0
[   32.864887]  ? dentry_open+0x1d0/0x1d0
[   32.868753]  ? apparmor_path_truncate+0x183/0x200
[   32.873575]  ? inode_permission+0x3d/0x140
[   32.877787]  path_openat+0x2308/0x2df0
[   32.881672]  ? path_lookupat+0x8d0/0x8d0
[   32.885712]  ? mark_held_locks+0xf0/0xf0
[   32.889749]  ? __lock_acquire+0x6de/0x3ff0
[   32.893962]  do_filp_open+0x18c/0x3f0
[   32.897738]  ? may_open_dev+0xf0/0xf0
[   32.901518]  ? lock_downgrade+0x720/0x720
[   32.905644]  ? lock_acquire+0x170/0x3c0
[   32.909594]  ? __alloc_fd+0x34/0x570
[   32.913283]  ? do_raw_spin_unlock+0x171/0x230
[   32.917755]  ? _raw_spin_unlock+0x29/0x40
[   32.921884]  ? __alloc_fd+0x28d/0x570
[   32.925665]  do_sys_open+0x3b3/0x520
[   32.929354]  ? filp_open+0x70/0x70
[   32.932873]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   32.938218]  ? trace_hardirqs_off_caller+0x6e/0x210
[   32.943212]  ? do_syscall_64+0x21/0x620
[   32.947164]  do_syscall_64+0xf9/0x620
[   32.950944]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   32.956127] RIP: 0033:0x7f87b2401779
[   32.959819] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
[   32.978698] RSP: 002b:00007ffded169d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[   32.986380] RAX: ffffffffffffffda RBX: 0032656c69662f2e RCX: 00007f87b2401779
[   32