program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = creat(&(0x7f0000000100)='./file1\x00', 0xc7) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 74.111579][ T4680] Bluetooth: hci0: command tx timeout [ 74.165359][ T5334] loop0: detected capacity change from 0 to 1024 [ 74.244944][ T5334] [ 74.246093][ T5334] ============================================ [ 74.248824][ T5334] WARNING: possible recursive locking detected [ 74.251624][ T5334] syzkaller #0 Not tainted [ 74.253583][ T5334] -------------------------------------------- [ 74.256408][ T5334] syz.0.0/5334 is trying to acquire lock: [ 74.259459][ T5334] ffff8880415ec108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 74.264436][ T5334] [ 74.264436][ T5334] but task is already holding lock: [ 74.267700][ T5334] ffff8880415ee988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 74.272453][ T5334] [ 74.272453][ T5334] other info that might help us debug this: [ 74.275993][ T5334] Possible unsafe locking scenario: [ 74.275993][ T5334] [ 74.279176][ T5334] CPU0 [ 74.280834][ T5334] ---- [ 74.282357][ T5334] lock(&HFSPLUS_I(inode)->extents_lock); [ 74.284952][ T5334] lock(&HFSPLUS_I(inode)->extents_lock); [ 74.287509][ T5334] [ 74.287509][ T5334] *** DEADLOCK *** [ 74.287509][ T5334] [ 74.291004][ T5334] May be due to missing lock nesting notation [ 74.291004][ T5334] [ 74.294596][ T5334] 3 locks held by syz.0.0/5334: [ 74.296851][ T5334] #0: ffff8880415eeb78 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: generic_file_write_iter+0x11e/0x680 [ 74.301756][ T5334] #1: ffff8880415ee988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 74.307040][ T5334] #2: ffff8880114800b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x2d0 [ 74.311468][ T5334] [ 74.311468][ T5334] stack backtrace: [ 74.314246][ T5334] CPU: 0 UID: 0 PID: 5334 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 74.314264][ T5334] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 74.314272][ T5334] Call Trace: [ 74.314281][ T5334] [ 74.314287][ T5334] dump_stack_lvl+0xe8/0x150 [ 74.314306][ T5334] print_deadlock_bug+0x279/0x290 [ 74.314322][ T5334] __lock_acquire+0x253f/0x2cf0 [ 74.314337][ T5334] ? unwind_next_frame+0xa5/0x23c0 [ 74.314353][ T5334] ? __bfs+0x153/0x290 [ 74.314371][ T5334] ? __pfx_hlock_conflict+0x10/0x10 [ 74.314388][ T5334] ? hfsplus_file_extend+0x215/0x1d70 [ 74.314401][ T5334] lock_acquire+0x106/0x330 [ 74.314413][ T5334] ? hfsplus_file_extend+0x215/0x1d70 [ 74.314428][ T5334] __mutex_lock+0x19f/0x1300 [ 74.314490][ T5334] ? hfsplus_file_extend+0x215/0x1d70 [ 74.314503][ T5334] ? __bfs+0x153/0x290 [ 74.314513][ T5334] ? __pfx_hlock_conflict+0x10/0x10 [ 74.314527][ T5334] ? hfsplus_file_extend+0x215/0x1d70 [ 74.314538][ T5334] ? check_path+0x21/0x40 [ 74.314550][ T5334] ? check_noncircular+0xda/0x150 [ 74.314565][ T5334] ? __pfx___mutex_lock+0x10/0x10 [ 74.314581][ T5334] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 74.314595][ T5334] hfsplus_file_extend+0x215/0x1d70 [ 74.314610][ T5334] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 74.314622][ T5334] ? __pfx___mutex_trylock_common+0x10/0x10 [ 74.314636][ T5334] ? rcu_is_watching+0x15/0xb0 [ 74.314648][ T5334] ? trace_contention_end+0x39/0x100 [ 74.314664][ T5334] ? __asan_memset+0x22/0x50 [ 74.314679][ T5334] ? hfsplus_brec_find+0x19d/0x520 [ 74.314696][ T5334] hfsplus_bmap_reserve+0x125/0x510 [ 74.314711][ T5334] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 74.314724][ T5334] __hfsplus_ext_cache_extent+0x89/0xe30 [ 74.314737][ T5334] hfsplus_file_extend+0x4af/0x1d70 [ 74.314750][ T5334] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 74.314763][ T5334] ? clean_bdev_aliases+0x62e/0x750 [ 74.314781][ T5334] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 74.314798][ T5334] hfsplus_get_block+0x42c/0x1670 [ 74.314813][ T5334] ? __pfx_hfsplus_get_block+0x10/0x10 [ 74.314823][ T5334] ? do_raw_spin_unlock+0x4d/0x210 [ 74.314832][ T5334] ? _raw_spin_unlock+0x28/0x50 [ 74.314844][ T5334] __block_write_begin_int+0x6c6/0x1910 [ 74.314861][ T5334] ? __pfx_hfsplus_get_block+0x10/0x10 [ 74.314873][ T5334] ? __pfx___block_write_begin_int+0x10/0x10 [ 74.314889][ T5334] cont_write_begin+0x737/0xae0 [ 74.314904][ T5334] ? irqentry_exit+0x59c/0x620 [ 74.314920][ T5334] ? __pfx_cont_write_begin+0x10/0x10 [ 74.314938][ T5334] hfsplus_write_begin+0x66/0xb0 [ 74.314949][ T5334] ? __pfx_hfsplus_get_block+0x10/0x10 [ 74.314961][ T5334] generic_perform_write+0x2e2/0x8f0 [ 74.314976][ T5334] ? __pfx_generic_perform_write+0x10/0x10 [ 74.314986][ T5334] ? file_update_time_flags+0x2cb/0x4d0 [ 74.315000][ T5334] ? __generic_file_write_iter+0xf9/0x230 [ 74.315010][ T5334] ? generic_file_write_iter+0x136/0x680 [ 74.315021][ T5334] generic_file_write_iter+0x14a/0x680 [ 74.315033][ T5334] ? __pfx_generic_file_write_iter+0x10/0x10 [ 74.315045][ T5334] ? __lock_acquire+0x6b5/0x2cf0 [ 74.315058][ T5334] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 74.315070][ T5334] ? lockdep_hardirqs_on+0x7a/0x110 [ 74.315084][ T5334] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 74.315097][ T5334] ? stack_depot_save_flags+0x3f3/0x810 [ 74.315155][ T5334] ? io_submit_one+0x7bb/0x14c0 [ 74.315173][ T5334] ? aio_write+0x547/0x870 [ 74.315186][ T5334] aio_write+0x5cd/0x870 [ 74.315201][ T5334] ? __pfx_aio_write+0x10/0x10 [ 74.315218][ T5334] ? __might_fault+0xaf/0x130 [ 74.315237][ T5334] io_submit_one+0x7bb/0x14c0 [ 74.315251][ T5334] ? irqentry_exit+0x59c/0x620 [ 74.315267][ T5334] ? __pfx_io_submit_one+0x10/0x10 [ 74.315281][ T5334] ? __might_fault+0xaf/0x130 [ 74.315296][ T5334] ? __might_fault+0xaf/0x130 [ 74.315310][ T5334] __se_sys_io_submit+0x195/0x340 [ 74.315323][ T5334] ? __pfx___se_sys_io_submit+0x10/0x10 [ 74.315340][ T5334] do_syscall_64+0xe2/0xf80 [ 74.315355][ T5334] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.315375][ T5334] ? trace_irq_disable+0x37/0x100 [ 74.315390][ T5334] ? clear_bhb_loop+0x60/0xb0 [ 74.315403][ T5334] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.315414][ T5334] RIP: 0033:0x7f4c4579acb9 [ 74.315426][ T5334] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 74.315436][ T5334] RSP: 002b:00007f4c46710028 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 74.315449][ T5334] RAX: ffffffffffffffda RBX: 00007f4c45a15fa0 RCX: 00007f4c4579acb9 [ 74.315459][ T5334] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f4c466c6000 [ 74.315465][ T5334] RBP: 00007f4c45808bf7 R08: 0000000000000000 R09: 0000000000000000 [ 74.315471][ T5334] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 74.315477][ T5334] R13: 00007f4c45a16038 R14: 00007f4c45a15fa0 R15: 00007ffc32637588 [ 74.315488][ T5334]