program: r0 = syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r1 = creat(&(0x7f0000000100)='./file1\x00', 0x0) ioctl$BTRFS_IOC_BALANCE_PROGRESS(r0, 0x84009422, &(0x7f0000000580)={0x0, 0x0, {0x0, @struct, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @struct}, {0x0, @usage, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @struct}, {0x0, @usage, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @struct}}) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r2, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r1, &(0x7f0000000000), 0x70000}]) [ 75.666332][ T4662] Bluetooth: hci0: command tx timeout [ 75.749241][ T5317] loop0: detected capacity change from 0 to 1024 [ 75.837091][ T5317] [ 75.838350][ T5317] ============================================ [ 75.841366][ T5317] WARNING: possible recursive locking detected [ 75.844046][ T5317] 6.15.0-rc7-syzkaller #0 Not tainted [ 75.846297][ T5317] -------------------------------------------- [ 75.849083][ T5317] syz.0.0/5317 is trying to acquire lock: [ 75.851511][ T5317] ffff888045d48108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 75.856199][ T5317] [ 75.856199][ T5317] but task is already holding lock: [ 75.859242][ T5317] ffff888045d4a988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 75.863832][ T5317] [ 75.863832][ T5317] other info that might help us debug this: [ 75.867346][ T5317] Possible unsafe locking scenario: [ 75.867346][ T5317] [ 75.870584][ T5317] CPU0 [ 75.872061][ T5317] ---- [ 75.873541][ T5317] lock(&HFSPLUS_I(inode)->extents_lock); [ 75.876100][ T5317] lock(&HFSPLUS_I(inode)->extents_lock); [ 75.878817][ T5317] [ 75.878817][ T5317] *** DEADLOCK *** [ 75.878817][ T5317] [ 75.882213][ T5317] May be due to missing lock nesting notation [ 75.882213][ T5317] [ 75.885733][ T5317] 3 locks held by syz.0.0/5317: [ 75.887858][ T5317] #0: ffff888045d4ab78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xe3/0x540 [ 75.892599][ T5317] #1: ffff888045d4a988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 75.897655][ T5317] #2: ffff88803fbb40b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x15a/0x1d0 [ 75.902106][ T5317] [ 75.902106][ T5317] stack backtrace: [ 75.904632][ T5317] CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) [ 75.904643][ T5317] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 75.904648][ T5317] Call Trace: [ 75.904653][ T5317] [ 75.904658][ T5317] dump_stack_lvl+0x189/0x250 [ 75.904676][ T5317] ? __pfx_dump_stack_lvl+0x10/0x10 [ 75.904687][ T5317] ? __pfx__printk+0x10/0x10 [ 75.904695][ T5317] ? print_lock_name+0xde/0x100 [ 75.904706][ T5317] print_deadlock_bug+0x28b/0x2a0 [ 75.904714][ T5317] validate_chain+0x1a3f/0x2140 [ 75.904722][ T5317] ? unwind_next_frame+0xa5/0x2390 [ 75.904732][ T5317] ? check_path+0x21/0x40 [ 75.904738][ T5317] ? check_noncircular+0xe0/0x160 [ 75.904745][ T5317] ? look_up_lock_class+0x74/0x170 [ 75.904809][ T5317] ? register_lock_class+0x51/0x320 [ 75.904820][ T5317] __lock_acquire+0xaac/0xd20 [ 75.904831][ T5317] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.904841][ T5317] lock_acquire+0x120/0x360 [ 75.904850][ T5317] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.904862][ T5317] __mutex_lock+0x182/0xe80 [ 75.904871][ T5317] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.904880][ T5317] ? check_path+0x21/0x40 [ 75.904885][ T5317] ? check_noncircular+0xe0/0x160 [ 75.904891][ T5317] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.904900][ T5317] ? __pfx___mutex_lock+0x10/0x10 [ 75.904912][ T5317] hfsplus_file_extend+0x1fc/0x1990 [ 75.904922][ T5317] ? __lock_acquire+0xaac/0xd20 [ 75.904932][ T5317] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 75.904945][ T5317] ? __mutex_trylock_common+0x153/0x260 [ 75.904955][ T5317] ? __pfx___mutex_trylock_common+0x10/0x10 [ 75.904966][ T5317] ? rcu_is_watching+0x15/0xb0 [ 75.904974][ T5317] ? trace_contention_end+0x39/0x120 [ 75.904984][ T5317] ? __mutex_lock+0x330/0xe80 [ 75.904993][ T5317] ? hfsplus_brec_find+0x191/0x500 [ 75.905001][ T5317] hfsplus_bmap_reserve+0x122/0x500 [ 75.905009][ T5317] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 75.905019][ T5317] __hfsplus_ext_cache_extent+0x89/0xe30 [ 75.905030][ T5317] hfsplus_file_extend+0x444/0x1990 [ 75.905040][ T5317] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 75.905054][ T5317] ? clean_bdev_aliases+0x5c9/0x6b0 [ 75.905065][ T5317] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 75.905074][ T5317] hfsplus_get_block+0x411/0x1530 [ 75.905084][ T5317] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.905093][ T5317] ? do_raw_spin_unlock+0x4d/0x240 [ 75.905100][ T5317] ? _raw_spin_unlock+0x28/0x50 [ 75.905108][ T5317] __block_write_begin_int+0x6b5/0x1900 [ 75.905119][ T5317] ? folio_add_lru+0x1b3/0x3d0 [ 75.905127][ T5317] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.905138][ T5317] ? __pfx___block_write_begin_int+0x10/0x10 [ 75.905153][ T5317] cont_write_begin+0x789/0xb50 [ 75.905164][ T5317] ? __pfx_cont_write_begin+0x10/0x10 [ 75.905173][ T5317] ? __pfx___might_resched+0x10/0x10 [ 75.905180][ T5317] ? folio_unlock+0x101/0x160 [ 75.905190][ T5317] hfsplus_write_begin+0x66/0xb0 [ 75.905198][ T5317] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.905207][ T5317] generic_perform_write+0x2c7/0x910 [ 75.905216][ T5317] ? __pfx_generic_perform_write+0x10/0x10 [ 75.905223][ T5317] ? file_update_time+0x2da/0x490 [ 75.905230][ T5317] ? __generic_file_write_iter+0xf9/0x230 [ 75.905236][ T5317] ? generic_file_write_iter+0xfb/0x540 [ 75.905244][ T5317] generic_file_write_iter+0x10f/0x540 [ 75.905250][ T5317] ? aa_file_perm+0x11f/0xed0 [ 75.905259][ T5317] ? __pfx_generic_file_write_iter+0x10/0x10 [ 75.905266][ T5317] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 75.905273][ T5317] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 75.905282][ T5317] ? __lock_acquire+0xaac/0xd20 [ 75.905293][ T5317] ? aio_write+0x4c4/0x790 [ 75.905301][ T5317] aio_write+0x535/0x790 [ 75.905310][ T5317] ? __pfx_aio_write+0x10/0x10 [ 75.905319][ T5317] ? __might_fault+0xb0/0x130 [ 75.905330][ T5317] io_submit_one+0x70a/0x1240 [ 75.905339][ T5317] ? __lock_acquire+0xaac/0xd20 [ 75.905348][ T5317] ? __pfx_io_submit_one+0x10/0x10 [ 75.905356][ T5317] ? __might_fault+0xb0/0x130 [ 75.905365][ T5317] ? __might_fault+0xb0/0x130 [ 75.905374][ T5317] __se_sys_io_submit+0x185/0x2f0 [ 75.905386][ T5317] ? __pfx___se_sys_io_submit+0x10/0x10 [ 75.905397][ T5317] ? do_syscall_64+0xba/0x210 [ 75.905410][ T5317] do_syscall_64+0xf6/0x210 [ 75.905423][ T5317] ? clear_bhb_loop+0x60/0xb0 [ 75.905433][ T5317] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.905443][ T5317] RIP: 0033:0x7f7ced78e969 [ 75.905451][ T5317] 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 [ 75.905457][ T5317] RSP: 002b:00007f7ce9bf5038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 75.905466][ T5317] RAX: ffffffffffffffda RBX: 00007f7ced9b5fa0 RCX: 00007f7ced78e969 [ 75.905471][ T5317] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f7ced986000 [ 75.905476][ T5317] RBP: 00007f7ced810ab1 R08: 0000000000000000 R09: 0000000000000000 [ 75.905480][ T5317] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 75.905484][ T5317] R13: 0000000000000000 R14: 00007f7ced9b5fa0 R15: 00007ffc80c93378 [ 75.905492][ T5317]