program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = creat(&(0x7f0000000180)='./file1\x00', 0x0) io_setup(0x202, &(0x7f0000000200)=0x0) r2 = syz_open_dev$tty1(0xc, 0x4, 0x3) ioctl$KDSKBENT(r2, 0x4b47, &(0x7f0000000000)={0x41, 0x0, 0x4002}) getsockopt$TIPC_GROUP_JOIN(r0, 0x10f, 0x87, &(0x7f0000000100), &(0x7f0000000140)=0x4) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 88.587369][ T5361] syz.0.0 (5361) used greatest stack depth:[ 85.410322][ T5337] Bluetooth: hci0: command tx timeout [ 85.512470][ T5361] loop0: detected capacity change from 0 to 1024 [ 85.617254][ T5361] [ 85.618321][ T5361] ============================================ [ 85.620923][ T5361] WARNING: possible recursive locking detected [ 85.623642][ T5361] syzkaller #0 Not tainted [ 85.625509][ T5361] -------------------------------------------- [ 85.628218][ T5361] syz.0.0/5361 is trying to acquire lock: [ 85.631015][ T5361] ffff888052ef8108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 85.636555][ T5361] [ 85.636555][ T5361] but task is already holding lock: [ 85.639775][ T5361] ffff888052efa988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 85.644470][ T5361] [ 85.644470][ T5361] other info that might help us debug this: [ 85.647634][ T5361] Possible unsafe locking scenario: [ 85.647634][ T5361] [ 85.650967][ T5361] CPU0 [ 85.652607][ T5361] ---- [ 85.654139][ T5361] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.657153][ T5361] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.660388][ T5361] [ 85.660388][ T5361] *** DEADLOCK *** [ 85.660388][ T5361] [ 85.664474][ T5361] May be due to missing lock nesting notation [ 85.664474][ T5361] [ 85.667951][ T5361] 3 locks held by syz.0.0/5361: [ 85.670111][ T5361] #0: ffff888052efab78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xeb/0x550 [ 85.674658][ T5361] #1: ffff888052efa988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 85.679139][ T5361] #2: ffff888000bc20b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x15a/0x1d0 [ 85.682964][ T5361] [ 85.682964][ T5361] stack backtrace: [ 85.685475][ T5361] CPU: 0 UID: 0 PID: 5361 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.685493][ T5361] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.685501][ T5361] Call Trace: [ 85.685510][ T5361] [ 85.685516][ T5361] dump_stack_lvl+0x189/0x250 [ 85.685533][ T5361] ? __pfx_dump_stack_lvl+0x10/0x10 [ 85.685545][ T5361] ? __pfx__printk+0x10/0x10 [ 85.685564][ T5361] ? print_lock_name+0xde/0x100 [ 85.685575][ T5361] print_deadlock_bug+0x28b/0x2a0 [ 85.685587][ T5361] validate_chain+0x1a3f/0x2140 [ 85.685598][ T5361] ? __bfs+0x154/0x2a0 [ 85.685607][ T5361] ? check_path+0x21/0x40 [ 85.685616][ T5361] ? look_up_lock_class+0x74/0x170 [ 85.685680][ T5361] ? register_lock_class+0x51/0x320 [ 85.685698][ T5361] __lock_acquire+0xab9/0xd20 [ 85.685800][ T5361] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.685814][ T5361] lock_acquire+0x120/0x360 [ 85.685830][ T5361] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.685844][ T5361] __mutex_lock+0x187/0x1350 [ 85.685856][ T5361] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.685865][ T5361] ? check_path+0x21/0x40 [ 85.685872][ T5361] ? check_noncircular+0xe0/0x160 [ 85.685881][ T5361] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.685888][ T5361] ? lockdep_unlock+0x89/0x120 [ 85.685898][ T5361] ? __pfx___mutex_lock+0x10/0x10 [ 85.685907][ T5361] hfsplus_file_extend+0x1fc/0x1990 [ 85.685915][ T5361] ? __lock_acquire+0xab9/0xd20 [ 85.685926][ T5361] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 85.685934][ T5361] ? __pfx___mutex_trylock_common+0x10/0x10 [ 85.685941][ T5361] ? __se_sys_io_submit+0x185/0x2f0 [ 85.685952][ T5361] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.685960][ T5361] ? rcu_is_watching+0x15/0xb0 [ 85.685968][ T5361] ? trace_contention_end+0x39/0x120 [ 85.685974][ T5361] ? __mutex_lock+0x335/0x1350 [ 85.685980][ T5361] ? hfsplus_brec_find+0x191/0x500 [ 85.685990][ T5361] hfsplus_bmap_reserve+0x122/0x500 [ 85.686001][ T5361] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 85.686013][ T5361] __hfsplus_ext_cache_extent+0x89/0xe30 [ 85.686024][ T5361] hfsplus_file_extend+0x444/0x1990 [ 85.686036][ T5361] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 85.686047][ T5361] ? clean_bdev_aliases+0x5c9/0x6b0 [ 85.686064][ T5361] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 85.686082][ T5361] hfsplus_get_block+0x411/0x1530 [ 85.686094][ T5361] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.686104][ T5361] ? do_raw_spin_unlock+0x4d/0x240 [ 85.686115][ T5361] ? _raw_spin_unlock+0x28/0x50 [ 85.686131][ T5361] __block_write_begin_int+0x6b2/0x1900 [ 85.686144][ T5361] ? folio_add_lru+0x1b2/0x3d0 [ 85.686160][ T5361] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.686167][ T5361] ? __pfx___block_write_begin_int+0x10/0x10 [ 85.686174][ T5361] cont_write_begin+0x789/0xb50 [ 85.686182][ T5361] ? __pfx_cont_write_begin+0x10/0x10 [ 85.686188][ T5361] ? __pfx___might_resched+0x10/0x10 [ 85.686195][ T5361] ? __mark_inode_dirty+0x3d2/0xe10 [ 85.686205][ T5361] ? folio_unlock+0x101/0x160 [ 85.686213][ T5361] hfsplus_write_begin+0x66/0xb0 [ 85.686219][ T5361] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.686226][ T5361] generic_perform_write+0x2c2/0x900 [ 85.686234][ T5361] ? __pfx_generic_perform_write+0x10/0x10 [ 85.686240][ T5361] ? file_update_time+0x416/0x490 [ 85.686247][ T5361] ? __generic_file_write_iter+0xf9/0x230 [ 85.686253][ T5361] ? generic_file_write_iter+0x103/0x550 [ 85.686259][ T5361] generic_file_write_iter+0x117/0x550 [ 85.686265][ T5361] ? __pfx_generic_file_write_iter+0x10/0x10 [ 85.686271][ T5361] ? lockdep_hardirqs_on+0x9c/0x150 [ 85.686281][ T5361] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 85.686289][ T5361] ? __pfx_aa_file_perm+0x10/0x10 [ 85.686301][ T5361] ? __lock_acquire+0xab9/0xd20 [ 85.686313][ T5361] ? aio_write+0x4c4/0x7a0 [ 85.686322][ T5361] aio_write+0x535/0x7a0 [ 85.686346][ T5361] ? __pfx_aio_write+0x10/0x10 [ 85.686363][ T5361] ? __might_fault+0xb0/0x130 [ 85.686379][ T5361] io_submit_one+0x78b/0x1310 [ 85.686391][ T5361] ? __pfx_io_submit_one+0x10/0x10 [ 85.686400][ T5361] ? __might_fault+0xb0/0x130 [ 85.686409][ T5361] ? __might_fault+0xb0/0x130 [ 85.686416][ T5361] __se_sys_io_submit+0x185/0x2f0 [ 85.686424][ T5361] ? __pfx___se_sys_io_submit+0x10/0x10 [ 85.686434][ T5361] ? do_syscall_64+0xbe/0x3b0 [ 85.686441][ T5361] do_syscall_64+0xfa/0x3b0 [ 85.686447][ T5361] ? lockdep_hardirqs_on+0x9c/0x150 [ 85.686456][ T5361] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.686462][ T5361] ? clear_bhb_loop+0x60/0xb0 [ 85.686469][ T5361] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.686476][ T5361] RIP: 0033:0x7ffb6f58ebe9 [ 85.686485][ T5361] 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 [ 85.686491][ T5361] RSP: 002b:00007ffb7041e038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 85.686500][ T5361] RAX: ffffffffffffffda RBX: 00007ffb6f7c5fa0 RCX: 00007ffb6f58ebe9 [ 85.686505][ T5361] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007ffb703d4000 [ 85.686509][ T5361] RBP: 00007ffb6f611e19 R08: 0000000000000000 R09: 0000000000000000 [ 85.686513][ T5361] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.686517][ T5361] R13: 00007ffb6f7c6038 R14: 00007ffb6f7c5fa0 R15: 00007ffc87adb828 [ 85.686529][ T5361]