program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = creat(&(0x7f0000000000)='./file1\x00', 0x121) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 86.779723][ T4676] Bluetooth: hci0: command tx timeout [ 86.901193][ T5332] loop0: detected capacity change from 0 to 1024 [ 87.102173][ T5332] [ 87.103363][ T5332] ============================================ [ 87.106291][ T5332] WARNING: possible recursive locking detected [ 87.108975][ T5332] syzkaller #0 Not tainted [ 87.111143][ T5332] -------------------------------------------- [ 87.113839][ T5332] syz.0.0/5332 is trying to acquire lock: [ 87.116437][ T5332] ffff8880405bc108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1c30 [ 87.121572][ T5332] [ 87.121572][ T5332] but task is already holding lock: [ 87.124935][ T5332] ffff8880405be988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1c30 [ 87.130257][ T5332] [ 87.130257][ T5332] other info that might help us debug this: [ 87.134039][ T5332] Possible unsafe locking scenario: [ 87.134039][ T5332] [ 87.137592][ T5332] CPU0 [ 87.139198][ T5332] ---- [ 87.140789][ T5332] lock(&HFSPLUS_I(inode)->extents_lock); [ 87.143267][ T5332] lock(&HFSPLUS_I(inode)->extents_lock); [ 87.145766][ T5332] [ 87.145766][ T5332] *** DEADLOCK *** [ 87.145766][ T5332] [ 87.149319][ T5332] May be due to missing lock nesting notation [ 87.149319][ T5332] [ 87.153085][ T5332] 3 locks held by syz.0.0/5332: [ 87.155379][ T5332] #0: ffff8880405beb78 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: generic_file_write_iter+0xeb/0x550 [ 87.160343][ T5332] #1: ffff8880405be988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1c30 [ 87.165508][ T5332] #2: ffff88801f5b00b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x2d0 [ 87.169866][ T5332] [ 87.169866][ T5332] stack backtrace: [ 87.172282][ T5332] CPU: 0 UID: 0 PID: 5332 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 87.172299][ T5332] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 87.172306][ T5332] Call Trace: [ 87.172313][ T5332] [ 87.172319][ T5332] dump_stack_lvl+0x189/0x250 [ 87.172339][ T5332] ? __pfx_dump_stack_lvl+0x10/0x10 [ 87.172351][ T5332] ? __pfx__printk+0x10/0x10 [ 87.172365][ T5332] ? print_lock_name+0xde/0x100 [ 87.172377][ T5332] print_deadlock_bug+0x279/0x290 [ 87.172388][ T5332] __lock_acquire+0x2540/0x2cf0 [ 87.172401][ T5332] ? hfsplus_file_extend+0x1f8/0x1c30 [ 87.172411][ T5332] lock_acquire+0x117/0x340 [ 87.172420][ T5332] ? hfsplus_file_extend+0x1f8/0x1c30 [ 87.172436][ T5332] __mutex_lock+0x187/0x1350 [ 87.172493][ T5332] ? hfsplus_file_extend+0x1f8/0x1c30 [ 87.172504][ T5332] ? __bfs+0x154/0x290 [ 87.172512][ T5332] ? __pfx_hlock_conflict+0x10/0x10 [ 87.172526][ T5332] ? hfsplus_file_extend+0x1f8/0x1c30 [ 87.172535][ T5332] ? check_noncircular+0xda/0x150 [ 87.172549][ T5332] ? __pfx___mutex_lock+0x10/0x10 [ 87.172563][ T5332] ? lockdep_unlock+0x89/0x120 [ 87.172575][ T5332] hfsplus_file_extend+0x1f8/0x1c30 [ 87.172587][ T5332] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 87.172597][ T5332] ? __pfx___mutex_trylock_common+0x10/0x10 [ 87.172611][ T5332] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.172620][ T5332] ? rcu_is_watching+0x15/0xb0 [ 87.172631][ T5332] ? trace_contention_end+0x39/0x100 [ 87.172643][ T5332] ? __asan_memset+0x22/0x50 [ 87.172654][ T5332] ? hfsplus_brec_find+0x1a9/0x510 [ 87.172668][ T5332] hfsplus_bmap_reserve+0x125/0x510 [ 87.172682][ T5332] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 87.172694][ T5332] __hfsplus_ext_cache_extent+0x89/0xe30 [ 87.172706][ T5332] hfsplus_file_extend+0x437/0x1c30 [ 87.172718][ T5332] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 87.172729][ T5332] ? clean_bdev_aliases+0x5c9/0x6b0 [ 87.172743][ T5332] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 87.172757][ T5332] hfsplus_get_block+0x40a/0x1600 [ 87.172768][ T5332] ? __pfx_hfsplus_get_block+0x10/0x10 [ 87.172778][ T5332] ? do_raw_spin_unlock+0x4d/0x240 [ 87.172870][ T5332] ? _raw_spin_unlock+0x28/0x50 [ 87.172884][ T5332] __block_write_begin_int+0x6b5/0x1900 [ 87.172901][ T5332] ? __pfx_workingset_update_node+0x10/0x10 [ 87.172916][ T5332] ? __pfx_hfsplus_get_block+0x10/0x10 [ 87.172929][ T5332] ? __pfx___block_write_begin_int+0x10/0x10 [ 87.172945][ T5332] cont_write_begin+0x78c/0xb50 [ 87.172960][ T5332] ? __pfx_cont_write_begin+0x10/0x10 [ 87.172972][ T5332] ? __pfx___might_resched+0x10/0x10 [ 87.172983][ T5332] ? folio_unlock+0x101/0x160 [ 87.172995][ T5332] hfsplus_write_begin+0x66/0xb0 [ 87.173004][ T5332] ? __pfx_hfsplus_get_block+0x10/0x10 [ 87.173018][ T5332] generic_perform_write+0x2c5/0x900 [ 87.173030][ T5332] ? __pfx_generic_perform_write+0x10/0x10 [ 87.173045][ T5332] ? file_update_time_flags+0x2cb/0x4e0 [ 87.173062][ T5332] ? __generic_file_write_iter+0xf9/0x230 [ 87.173074][ T5332] ? generic_file_write_iter+0x103/0x550 [ 87.173084][ T5332] generic_file_write_iter+0x117/0x550 [ 87.173094][ T5332] ? __pfx_generic_file_write_iter+0x10/0x10 [ 87.173107][ T5332] ? __lock_acquire+0x6b6/0x2cf0 [ 87.173122][ T5332] ? aio_write+0x4c4/0x7a0 [ 87.173133][ T5332] aio_write+0x535/0x7a0 [ 87.173153][ T5332] ? __pfx_aio_write+0x10/0x10 [ 87.173168][ T5332] ? __might_fault+0xb0/0x130 [ 87.173185][ T5332] io_submit_one+0x775/0x1430 [ 87.173203][ T5332] ? __pfx_io_submit_one+0x10/0x10 [ 87.173216][ T5332] ? __might_fault+0xb0/0x130 [ 87.173229][ T5332] ? __might_fault+0xb0/0x130 [ 87.173241][ T5332] __se_sys_io_submit+0x185/0x320 [ 87.173254][ T5332] ? __pfx___se_sys_io_submit+0x10/0x10 [ 87.173267][ T5332] ? do_syscall_64+0xbe/0xf80 [ 87.173278][ T5332] do_syscall_64+0xfa/0xf80 [ 87.173290][ T5332] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.173300][ T5332] ? clear_bhb_loop+0x60/0xb0 [ 87.173311][ T5332] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.173321][ T5332] RIP: 0033:0x7f827d38f7c9 [ 87.173332][ T5332] 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 [ 87.173340][ T5332] RSP: 002b:00007f827e197038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 87.173353][ T5332] RAX: ffffffffffffffda RBX: 00007f827d5e5fa0 RCX: 00007f827d38f7c9 [ 87.173361][ T5332] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f827e14d000 [ 87.173369][ T5332] RBP: 00007f827d413f91 R08: 0000000000000000 R09: 0000000000000000 [ 87.173376][ T5332] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 87.173382][ T5332] R13: 00007f827d5e6038 R14: 00007f827d5e5fa0 R15: 00007ffcc6f448e8 [ 87.173392][ T5332]