program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = creat(&(0x7f0000000100)='./file1\x00', 0x0) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 68.780629][ T4681] Bluetooth: hci0: command tx timeout [ 68.858125][ T5333] loop0: detected capacity change from 0 to 1024 [ 68.929106][ T5333] [ 68.930248][ T5333] ============================================ [ 68.932967][ T5333] WARNING: possible recursive locking detected [ 68.935717][ T5333] syzkaller #0 Not tainted [ 68.937733][ T5333] -------------------------------------------- [ 68.940553][ T5333] syz.0.0/5333 is trying to acquire lock: [ 68.943046][ T5333] ffff88805221c108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 68.947967][ T5333] [ 68.947967][ T5333] but task is already holding lock: [ 68.951179][ T5333] ffff88805221e988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 68.955868][ T5333] [ 68.955868][ T5333] other info that might help us debug this: [ 68.959312][ T5333] Possible unsafe locking scenario: [ 68.959312][ T5333] [ 68.962562][ T5333] CPU0 [ 68.963948][ T5333] ---- [ 68.965393][ T5333] lock(&HFSPLUS_I(inode)->extents_lock); [ 68.968007][ T5333] lock(&HFSPLUS_I(inode)->extents_lock); [ 68.970647][ T5333] [ 68.970647][ T5333] *** DEADLOCK *** [ 68.970647][ T5333] [ 68.974206][ T5333] May be due to missing lock nesting notation [ 68.974206][ T5333] [ 68.977702][ T5333] 3 locks held by syz.0.0/5333: [ 68.979835][ T5333] #0: ffff88805221eb78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xeb/0x550 [ 68.984624][ T5333] #1: ffff88805221e988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 68.989465][ T5333] #2: ffff8880342a60b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x290 [ 68.993780][ T5333] [ 68.993780][ T5333] stack backtrace: [ 68.996271][ T5333] CPU: 0 UID: 0 PID: 5333 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 68.996287][ T5333] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 68.996297][ T5333] Call Trace: [ 68.996304][ T5333] [ 68.996310][ T5333] dump_stack_lvl+0x189/0x250 [ 68.996331][ T5333] ? __pfx_dump_stack_lvl+0x10/0x10 [ 68.996345][ T5333] ? __pfx__printk+0x10/0x10 [ 68.996356][ T5333] ? print_lock_name+0xde/0x100 [ 68.996380][ T5333] print_deadlock_bug+0x28b/0x2a0 [ 68.996397][ T5333] validate_chain+0x1a3f/0x2140 [ 68.996413][ T5333] ? __bfs+0x154/0x2a0 [ 68.996425][ T5333] ? check_path+0x21/0x40 [ 68.996436][ T5333] ? look_up_lock_class+0x74/0x170 [ 68.996488][ T5333] ? register_lock_class+0x51/0x320 [ 68.996500][ T5333] __lock_acquire+0xab9/0xd20 [ 68.996514][ T5333] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 68.996526][ T5333] lock_acquire+0x120/0x360 [ 68.996538][ T5333] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 68.996553][ T5333] __mutex_lock+0x187/0x1350 [ 68.996563][ T5333] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 68.996575][ T5333] ? check_path+0x21/0x40 [ 68.996587][ T5333] ? check_noncircular+0xe0/0x160 [ 68.996600][ T5333] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 68.996612][ T5333] ? lockdep_unlock+0x89/0x120 [ 68.996622][ T5333] ? __pfx___mutex_lock+0x10/0x10 [ 68.996636][ T5333] hfsplus_file_extend+0x1f8/0x1ba0 [ 68.996648][ T5333] ? __lock_acquire+0xab9/0xd20 [ 68.996659][ T5333] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 68.996671][ T5333] ? __pfx___mutex_trylock_common+0x10/0x10 [ 68.996684][ T5333] ? __se_sys_io_submit+0x185/0x2f0 [ 68.996699][ T5333] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 68.996711][ T5333] ? rcu_is_watching+0x15/0xb0 [ 68.996723][ T5333] ? trace_contention_end+0x39/0x120 [ 68.996739][ T5333] ? __asan_memset+0x22/0x50 [ 68.996754][ T5333] ? hfsplus_brec_find+0x1a9/0x510 [ 68.996771][ T5333] hfsplus_bmap_reserve+0x122/0x500 [ 68.996787][ T5333] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 68.996801][ T5333] __hfsplus_ext_cache_extent+0x89/0xe30 [ 68.996814][ T5333] hfsplus_file_extend+0x437/0x1ba0 [ 68.996828][ T5333] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 68.996840][ T5333] ? clean_bdev_aliases+0x5c9/0x6b0 [ 68.996857][ T5333] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 68.996875][ T5333] hfsplus_get_block+0x40a/0x15d0 [ 68.996887][ T5333] ? __pfx_hfsplus_get_block+0x10/0x10 [ 68.996899][ T5333] ? do_raw_spin_unlock+0x4d/0x240 [ 68.996914][ T5333] ? _raw_spin_unlock+0x28/0x50 [ 68.996930][ T5333] __block_write_begin_int+0x6b2/0x1900 [ 68.996948][ T5333] ? folio_add_lru+0x1b2/0x3d0 [ 68.996962][ T5333] ? __pfx_hfsplus_get_block+0x10/0x10 [ 68.996975][ T5333] ? __pfx___block_write_begin_int+0x10/0x10 [ 68.996992][ T5333] cont_write_begin+0x789/0xb50 [ 68.997006][ T5333] ? __pfx_cont_write_begin+0x10/0x10 [ 68.997016][ T5333] ? __pfx___might_resched+0x10/0x10 [ 68.997027][ T5333] ? __mark_inode_dirty+0x3d2/0xe10 [ 68.997044][ T5333] ? folio_unlock+0x101/0x160 [ 68.997057][ T5333] hfsplus_write_begin+0x66/0xb0 [ 68.997074][ T5333] ? __pfx_hfsplus_get_block+0x10/0x10 [ 68.997085][ T5333] generic_perform_write+0x2c2/0x900 [ 68.997104][ T5333] ? __pfx_generic_perform_write+0x10/0x10 [ 68.997119][ T5333] ? file_update_time+0x2da/0x490 [ 68.997136][ T5333] ? __generic_file_write_iter+0xf9/0x230 [ 68.997151][ T5333] ? generic_file_write_iter+0x103/0x550 [ 68.997168][ T5333] generic_file_write_iter+0x117/0x550 [ 68.997183][ T5333] ? __pfx_generic_file_write_iter+0x10/0x10 [ 68.997200][ T5333] ? lockdep_hardirqs_on+0x9c/0x150 [ 68.997216][ T5333] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 68.997238][ T5333] ? __pfx_aa_file_perm+0x10/0x10 [ 68.997256][ T5333] ? __lock_acquire+0xab9/0xd20 [ 68.997272][ T5333] ? aio_write+0x4c4/0x7a0 [ 68.997287][ T5333] aio_write+0x532/0x7a0 [ 68.997305][ T5333] ? __pfx_aio_write+0x10/0x10 [ 68.997321][ T5333] ? __might_fault+0xb0/0x130 [ 68.997336][ T5333] io_submit_one+0x78b/0x1310 [ 68.997354][ T5333] ? __pfx_io_submit_one+0x10/0x10 [ 68.997369][ T5333] ? __might_fault+0xb0/0x130 [ 68.997382][ T5333] ? __might_fault+0xb0/0x130 [ 68.997393][ T5333] __se_sys_io_submit+0x185/0x2f0 [ 68.997408][ T5333] ? __pfx___se_sys_io_submit+0x10/0x10 [ 68.997422][ T5333] ? do_syscall_64+0xbe/0x3b0 [ 68.997435][ T5333] do_syscall_64+0xfa/0x3b0 [ 68.997444][ T5333] ? lockdep_hardirqs_on+0x9c/0x150 [ 68.997458][ T5333] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 68.997471][ T5333] ? clear_bhb_loop+0x60/0xb0 [ 68.997482][ T5333] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 68.997492][ T5333] RIP: 0033:0x7f3c8318eec9 [ 68.997504][ T5333] 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 [ 68.997513][ T5333] RSP: 002b:00007f3c83fce038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 68.997525][ T5333] RAX: ffffffffffffffda RBX: 00007f3c833e5fa0 RCX: 00007f3c8318eec9 [ 68.997533][ T5333] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f3c83f84000 [ 68.997542][ T5333] RBP: 00007f3c83211f91 R08: 0000000000000000 R09: 0000000000000000 [ 68.997548][ T5333] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 68.997554][ T5333] R13: 00007f3c833e6038 R14: 00007f3c833e5fa0 R15: 00007fff0e5fd708 [ 68.997565][ T5333]