program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = creat(&(0x7f0000000000)='./file1\x00', 0x0) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 74.994506][ T5310] Bluetooth: hci0: command tx timeout [ 75.081424][ T5326] loop0: detected capacity change from 0 to 1024 [ 75.145979][ T5326] [ 75.147086][ T5326] ============================================ [ 75.149413][ T5326] WARNING: possible recursive locking detected [ 75.151643][ T5326] 6.15.0-syzkaller-11173-g546b1c9e93c2 #0 Not tainted [ 75.154477][ T5326] -------------------------------------------- [ 75.157172][ T5326] syz.0.0/5326 is trying to acquire lock: [ 75.159672][ T5326] ffff888052f98108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 75.164352][ T5326] [ 75.164352][ T5326] but task is already holding lock: [ 75.167186][ T5326] ffff888052f9a988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 75.171337][ T5326] [ 75.171337][ T5326] other info that might help us debug this: [ 75.174495][ T5326] Possible unsafe locking scenario: [ 75.174495][ T5326] [ 75.177450][ T5326] CPU0 [ 75.178819][ T5326] ---- [ 75.180036][ T5326] lock(&HFSPLUS_I(inode)->extents_lock); [ 75.182573][ T5326] lock(&HFSPLUS_I(inode)->extents_lock); [ 75.185098][ T5326] [ 75.185098][ T5326] *** DEADLOCK *** [ 75.185098][ T5326] [ 75.188388][ T5326] May be due to missing lock nesting notation [ 75.188388][ T5326] [ 75.191822][ T5326] 3 locks held by syz.0.0/5326: [ 75.193909][ T5326] #0: ffff888052f9ab78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xe3/0x540 [ 75.198506][ T5326] #1: ffff888052f9a988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 75.203198][ T5326] #2: ffff8880402b00b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x15a/0x1d0 [ 75.207361][ T5326] [ 75.207361][ T5326] stack backtrace: [ 75.209986][ T5326] CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted 6.15.0-syzkaller-11173-g546b1c9e93c2 #0 PREEMPT(full) [ 75.210002][ T5326] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 75.210011][ T5326] Call Trace: [ 75.210019][ T5326] [ 75.210025][ T5326] dump_stack_lvl+0x189/0x250 [ 75.210051][ T5326] ? __pfx_dump_stack_lvl+0x10/0x10 [ 75.210070][ T5326] ? __pfx__printk+0x10/0x10 [ 75.210083][ T5326] ? print_lock_name+0xde/0x100 [ 75.210095][ T5326] print_deadlock_bug+0x28b/0x2a0 [ 75.210107][ T5326] validate_chain+0x1a3f/0x2140 [ 75.210118][ T5326] ? check_path+0x21/0x40 [ 75.210127][ T5326] ? check_noncircular+0xe0/0x160 [ 75.210138][ T5326] ? look_up_lock_class+0x74/0x170 [ 75.210198][ T5326] ? register_lock_class+0x51/0x320 [ 75.210216][ T5326] __lock_acquire+0xab9/0xd20 [ 75.210232][ T5326] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.210247][ T5326] lock_acquire+0x120/0x360 [ 75.210262][ T5326] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.210282][ T5326] __mutex_lock+0x182/0xe80 [ 75.210294][ T5326] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.210308][ T5326] ? check_path+0x21/0x40 [ 75.210318][ T5326] ? check_noncircular+0xe0/0x160 [ 75.210331][ T5326] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.210348][ T5326] ? __pfx___mutex_lock+0x10/0x10 [ 75.210365][ T5326] hfsplus_file_extend+0x1fc/0x1990 [ 75.210384][ T5326] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 75.210398][ T5326] ? __mutex_trylock_common+0x153/0x260 [ 75.210410][ T5326] ? __pfx___mutex_trylock_common+0x10/0x10 [ 75.210422][ T5326] ? rcu_is_watching+0x15/0xb0 [ 75.210432][ T5326] ? trace_contention_end+0x39/0x120 [ 75.210442][ T5326] ? __mutex_lock+0x330/0xe80 [ 75.210452][ T5326] ? hfsplus_brec_find+0x191/0x500 [ 75.210465][ T5326] hfsplus_bmap_reserve+0x122/0x500 [ 75.210486][ T5326] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 75.210502][ T5326] __hfsplus_ext_cache_extent+0x89/0xe30 [ 75.210518][ T5326] hfsplus_file_extend+0x444/0x1990 [ 75.210536][ T5326] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 75.210552][ T5326] ? clean_bdev_aliases+0x5c9/0x6b0 [ 75.210567][ T5326] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 75.210582][ T5326] hfsplus_get_block+0x411/0x1530 [ 75.210600][ T5326] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.210623][ T5326] ? do_raw_spin_unlock+0x4d/0x240 [ 75.210638][ T5326] ? _raw_spin_unlock+0x28/0x50 [ 75.210656][ T5326] __block_write_begin_int+0x6b2/0x1900 [ 75.210675][ T5326] ? folio_add_lru+0x1b2/0x3d0 [ 75.210690][ T5326] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.210705][ T5326] ? __pfx___block_write_begin_int+0x10/0x10 [ 75.210721][ T5326] cont_write_begin+0x789/0xb50 [ 75.210739][ T5326] ? __pfx_cont_write_begin+0x10/0x10 [ 75.210753][ T5326] ? __pfx___might_resched+0x10/0x10 [ 75.210765][ T5326] ? folio_unlock+0x101/0x160 [ 75.210778][ T5326] hfsplus_write_begin+0x66/0xb0 [ 75.210791][ T5326] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.210806][ T5326] generic_perform_write+0x2c4/0x910 [ 75.210823][ T5326] ? __pfx_generic_perform_write+0x10/0x10 [ 75.210838][ T5326] ? file_update_time+0x2da/0x490 [ 75.210855][ T5326] ? __generic_file_write_iter+0xf9/0x230 [ 75.210869][ T5326] ? generic_file_write_iter+0xfb/0x540 [ 75.210886][ T5326] generic_file_write_iter+0x10f/0x540 [ 75.210901][ T5326] ? aa_file_perm+0x11f/0xed0 [ 75.210913][ T5326] ? __pfx_generic_file_write_iter+0x10/0x10 [ 75.210938][ T5326] ? __lock_acquire+0xab9/0xd20 [ 75.210959][ T5326] ? aio_write+0x4c4/0x7a0 [ 75.210974][ T5326] aio_write+0x532/0x7a0 [ 75.210987][ T5326] ? __pfx_aio_write+0x10/0x10 [ 75.211004][ T5326] ? __might_fault+0xb0/0x130 [ 75.211019][ T5326] io_submit_one+0x78b/0x1310 [ 75.211035][ T5326] ? __pfx_io_submit_one+0x10/0x10 [ 75.211047][ T5326] ? __might_fault+0xb0/0x130 [ 75.211060][ T5326] ? __might_fault+0xb0/0x130 [ 75.211071][ T5326] __se_sys_io_submit+0x185/0x2f0 [ 75.211084][ T5326] ? __pfx___se_sys_io_submit+0x10/0x10 [ 75.211098][ T5326] ? do_syscall_64+0xbe/0x3b0 [ 75.211109][ T5326] do_syscall_64+0xfa/0x3b0 [ 75.211119][ T5326] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.211135][ T5326] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.211146][ T5326] ? clear_bhb_loop+0x60/0xb0 [ 75.211158][ T5326] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.211178][ T5326] RIP: 0033:0x7f17ca18e969 [ 75.211192][ T5326] 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 [ 75.211204][ T5326] RSP: 002b:00007f17caf87038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 75.211218][ T5326] RAX: ffffffffffffffda RBX: 00007f17ca3b5fa0 RCX: 00007f17ca18e969 [ 75.211230][ T5326] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f17caf3d000 [ 75.211240][ T5326] RBP: 00007f17ca210ab1 R08: 0000000000000000 R09: 0000000000000000 [ 75.211248][ T5326] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 75.211254][ T5326] R13: 0000000000000000 R14: 00007f17ca3b5fa0 R15: 00007ffe80042598 [ 75.211269][ T5326]