program: syz_mount_image$hfsplus(&(0x7f0000000600), &(0x7f0000000040)='./file1\x00', 0x0, &(0x7f0000000080)={[{@part={'part', 0x3d, 0x40}}, {@nodecompose}, {@part={'part', 0x3d, 0x7}}, {@part={'part', 0x3d, 0xc}}, {@uid}, {@barrier}, {@nls={'nls', 0x3d, 'macinuit'}}, {@gid={'gid', 0x3d, 0xee00}}]}, 0x3, 0x5f4, &(0x7f0000000640)="$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") r0 = openat$dir(0xffffffffffffff9c, &(0x7f0000000000)='./file2\x00', 0x42202, 0x12) getdents64(r0, &(0x7f0000000100)=""/154, 0x9a) unlinkat(0xffffffffffffff9c, &(0x7f00000003c0)='./file2\x00', 0x0) [ 85.556378][ T4703] Bluetooth: hci0: command tx timeout [ 85.675908][ T5358] loop0: detected capacity change from 0 to 1024 [ 85.764538][ T5358] [ 85.765692][ T5358] ============================================ [ 85.768501][ T5358] WARNING: possible recursive locking detected [ 85.771122][ T5358] syzkaller #0 Not tainted [ 85.772899][ T5358] -------------------------------------------- [ 85.775411][ T5358] syz.0.0/5358 is trying to acquire lock: [ 85.777878][ T5358] ffff888053129548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_get_block+0x39e/0x1530 [ 85.782280][ T5358] [ 85.782280][ T5358] but task is already holding lock: [ 85.785318][ T5358] ffff88805312a988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x294/0xb40 [ 85.790258][ T5358] [ 85.790258][ T5358] other info that might help us debug this: [ 85.793605][ T5358] Possible unsafe locking scenario: [ 85.793605][ T5358] [ 85.796648][ T5358] CPU0 [ 85.798110][ T5358] ---- [ 85.799537][ T5358] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.802035][ T5358] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.804484][ T5358] [ 85.804484][ T5358] *** DEADLOCK *** [ 85.804484][ T5358] [ 85.807828][ T5358] May be due to missing lock nesting notation [ 85.807828][ T5358] [ 85.811263][ T5358] 4 locks held by syz.0.0/5358: [ 85.813314][ T5358] #0: ffff888033c12428 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 85.817192][ T5358] #1: ffff88805312ab78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: do_truncate+0x171/0x220 [ 85.821670][ T5358] #2: ffff88805312a988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x294/0xb40 [ 85.826553][ T5358] #3: ffff88803384f8f8 (&sbi->alloc_mutex){+.+.}-{4:4}, at: hfsplus_block_free+0xbe/0x550 [ 85.830618][ T5358] [ 85.830618][ T5358] stack backtrace: [ 85.833121][ T5358] CPU: 0 UID: 0 PID: 5358 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.833139][ T5358] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.833147][ T5358] Call Trace: [ 85.833154][ T5358] [ 85.833161][ T5358] dump_stack_lvl+0x189/0x250 [ 85.833187][ T5358] ? __pfx_dump_stack_lvl+0x10/0x10 [ 85.833200][ T5358] ? __pfx__printk+0x10/0x10 [ 85.833219][ T5358] ? print_lock_name+0xde/0x100 [ 85.833236][ T5358] print_deadlock_bug+0x28b/0x2a0 [ 85.833250][ T5358] validate_chain+0x1a3f/0x2140 [ 85.833292][ T5358] ? lock_release+0x4b/0x3e0 [ 85.833310][ T5358] ? look_up_lock_class+0x74/0x170 [ 85.833361][ T5358] ? register_lock_class+0x51/0x320 [ 85.833380][ T5358] __lock_acquire+0xab9/0xd20 [ 85.833399][ T5358] ? hfsplus_get_block+0x39e/0x1530 [ 85.833419][ T5358] lock_acquire+0x120/0x360 [ 85.833436][ T5358] ? hfsplus_get_block+0x39e/0x1530 [ 85.833449][ T5358] ? stack_trace_save+0x9c/0xe0 [ 85.833464][ T5358] ? __pfx_hlock_conflict+0x10/0x10 [ 85.833476][ T5358] __mutex_lock+0x187/0x1350 [ 85.833488][ T5358] ? hfsplus_get_block+0x39e/0x1530 [ 85.833501][ T5358] ? lockdep_unlock+0x89/0x120 [ 85.833517][ T5358] ? validate_chain+0x897/0x2140 [ 85.833529][ T5358] ? hfsplus_get_block+0x39e/0x1530 [ 85.833542][ T5358] ? __pfx___mutex_lock+0x10/0x10 [ 85.833557][ T5358] hfsplus_get_block+0x39e/0x1530 [ 85.833571][ T5358] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.833583][ T5358] ? do_raw_spin_unlock+0x4d/0x240 [ 85.833597][ T5358] ? _raw_spin_unlock+0x28/0x50 [ 85.833613][ T5358] block_read_full_folio+0x29c/0x830 [ 85.833626][ T5358] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.833637][ T5358] filemap_read_folio+0x114/0x380 [ 85.833654][ T5358] ? __pfx_hfsplus_read_folio+0x10/0x10 [ 85.833662][ T5358] ? __pfx_filemap_read_folio+0x10/0x10 [ 85.833678][ T5358] ? filemap_add_folio+0x1af/0x270 [ 85.833697][ T5358] do_read_cache_folio+0x350/0x590 [ 85.833709][ T5358] ? __pfx_hfsplus_read_folio+0x10/0x10 [ 85.833721][ T5358] read_cache_page+0x5d/0x170 [ 85.833732][ T5358] hfsplus_block_free+0x121/0x550 [ 85.833754][ T5358] hfsplus_free_extents+0x10d/0xa60 [ 85.833771][ T5358] hfsplus_file_truncate+0x736/0xb40 [ 85.833788][ T5358] ? __pfx_hfsplus_file_truncate+0x10/0x10 [ 85.833806][ T5358] ? unmap_mapping_range+0xde/0x170 [ 85.833819][ T5358] ? __pfx_unmap_mapping_range+0x10/0x10 [ 85.833830][ T5358] ? truncate_setsize+0xcf/0xf0 [ 85.833843][ T5358] hfsplus_setattr+0x1c4/0x270 [ 85.833853][ T5358] ? __pfx_hfsplus_setattr+0x10/0x10 [ 85.833866][ T5358] notify_change+0xb33/0xe40 [ 85.833884][ T5358] do_truncate+0x1a4/0x220 [ 85.833897][ T5358] ? __pfx_do_truncate+0x10/0x10 [ 85.833908][ T5358] ? apparmor_file_truncate+0x23e/0x2d0 [ 85.833925][ T5358] path_openat+0x306c/0x3830 [ 85.833937][ T5358] ? arch_stack_walk+0xfc/0x150 [ 85.833958][ T5358] ? __pfx_path_openat+0x10/0x10 [ 85.833968][ T5358] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.833985][ T5358] do_filp_open+0x1fa/0x410 [ 85.833997][ T5358] ? __lock_acquire+0xab9/0xd20 [ 85.834013][ T5358] ? __pfx_do_filp_open+0x10/0x10 [ 85.834028][ T5358] ? _raw_spin_unlock+0x28/0x50 [ 85.834043][ T5358] ? alloc_fd+0x64c/0x6c0 [ 85.834057][ T5358] do_sys_openat2+0x121/0x1c0 [ 85.834074][ T5358] ? __pfx_do_sys_openat2+0x10/0x10 [ 85.834090][ T5358] ? rcu_is_watching+0x15/0xb0 [ 85.834102][ T5358] __x64_sys_openat+0x138/0x170 [ 85.834113][ T5358] do_syscall_64+0xfa/0x3b0 [ 85.834124][ T5358] ? lockdep_hardirqs_on+0x9c/0x150 [ 85.834133][ T5358] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.834144][ T5358] ? clear_bhb_loop+0x60/0xb0 [ 85.834155][ T5358] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.834169][ T5358] RIP: 0033:0x7f280518eba9 [ 85.834181][ T5358] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 [ 85.834190][ T5358] RSP: 002b:00007f28060a8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 85.834203][ T5358] RAX: ffffffffffffffda RBX: 00007f28053d5fa0 RCX: 00007f280518eba9 [ 85.834217][ T5358] RDX: 0000000000042202 RSI: 0000200000000000 RDI: ffffffffffffff9c [ 85.834226][ T5358] RBP: 00007f2805211e19 R08: 0000000000000000 R09: 0000000000000000 [ 85.834234][ T5358] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000 [ 85.834242][ T5358] R13: 00007f28053d6038 R14: 00007f28053d5fa0 R15: 00007fff56970cf8 [ 85.834255][ T5358] [ 86.024197][ T5358] hfsplus: unable to mark blocks free: error -5 [ 86.026834][ T5358] hfsplus: can't free extent