program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = creat(&(0x7f0000000100)='./file1\x00', 0x192) io_setup(0x202, &(0x7f0000000200)=0x0) write$char_usb(r0, &(0x7f0000000240)="df24dda3e0636dab55cbe6b028336aedc63c887a6ff8e6fd184365c4750b95b6d653ef7e2f6be26fe712088f05839c051be8ee78cb78e1f894ba843fd55da40734562299d1690d8287afd7487d535db42fd9ae589ad3ee71046f8ab896cb4a1197777d24099ba0e3d12c34fe331e42ee4d969ec1c5d91683059fcbc1bc24178844efe8c7f546ff4a9d68f22a0d95daecd9a6db7da803ff99c701591afd93dd984197965aca7f96fa5eba8435c67fad0c62b2d9e1d3b82680886e0dc69e7284a4d3805771818fe1d885c33bc4eab15838504db36fe6ff467289", 0xd9) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 83.960773][ T46] Bluetooth: hci0: command tx timeout [ 84.052358][ T5330] loop0: detected capacity change from 0 to 1024 [ 84.131973][ T5330] [ 84.133176][ T5330] ============================================ [ 84.135892][ T5330] WARNING: possible recursive locking detected [ 84.138725][ T5330] syzkaller #0 Not tainted [ 84.140858][ T5330] -------------------------------------------- [ 84.143835][ T5330] syz.0.0/5330 is trying to acquire lock: [ 84.146476][ T5330] ffff888011918e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.151585][ T5330] [ 84.151585][ T5330] but task is already holding lock: [ 84.155693][ T5330] ffff8880118f22c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.161376][ T5330] [ 84.161376][ T5330] other info that might help us debug this: [ 84.164889][ T5330] Possible unsafe locking scenario: [ 84.164889][ T5330] [ 84.168173][ T5330] CPU0 [ 84.169620][ T5330] ---- [ 84.171243][ T5330] lock(&HFSPLUS_I(inode)->extents_lock); [ 84.174296][ T5330] lock(&HFSPLUS_I(inode)->extents_lock); [ 84.177026][ T5330] [ 84.177026][ T5330] *** DEADLOCK *** [ 84.177026][ T5330] [ 84.181070][ T5330] May be due to missing lock nesting notation [ 84.181070][ T5330] [ 84.184800][ T5330] 3 locks held by syz.0.0/5330: [ 84.187059][ T5330] #0: ffff8880118f24b8 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: generic_file_write_iter+0x11e/0x680 [ 84.192130][ T5330] #1: ffff8880118f22c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.197442][ T5330] #2: ffff88801190c0b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x2d0 [ 84.202451][ T5330] [ 84.202451][ T5330] stack backtrace: [ 84.205151][ T5330] CPU: 0 UID: 0 PID: 5330 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 84.205175][ T5330] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 84.205185][ T5330] Call Trace: [ 84.205196][ T5330] [ 84.205203][ T5330] dump_stack_lvl+0xe8/0x150 [ 84.205232][ T5330] print_deadlock_bug+0x279/0x290 [ 84.205257][ T5330] __lock_acquire+0x253f/0x2cf0 [ 84.205278][ T5330] ? unwind_next_frame+0xa5/0x23c0 [ 84.205301][ T5330] ? __bfs+0x153/0x290 [ 84.205317][ T5330] ? __pfx_hlock_conflict+0x10/0x10 [ 84.205337][ T5330] lock_acquire+0xf0/0x2e0 [ 84.205353][ T5330] ? hfsplus_file_extend+0x215/0x1d70 [ 84.205374][ T5330] __mutex_lock+0x19f/0x1300 [ 84.205484][ T5330] ? hfsplus_file_extend+0x215/0x1d70 [ 84.205504][ T5330] ? __bfs+0x153/0x290 [ 84.205522][ T5330] ? hfsplus_file_extend+0x215/0x1d70 [ 84.205542][ T5330] ? __pfx___mutex_lock+0x10/0x10 [ 84.205558][ T5330] ? lockdep_unlock+0x5d/0xd0 [ 84.205574][ T5330] ? __lock_acquire+0x146e/0x2cf0 [ 84.205591][ T5330] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 84.205615][ T5330] hfsplus_file_extend+0x215/0x1d70 [ 84.205638][ T5330] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 84.205659][ T5330] ? __pfx___mutex_trylock_common+0x10/0x10 [ 84.205683][ T5330] ? rcu_is_watching+0x15/0xb0 [ 84.205698][ T5330] ? trace_contention_end+0x3d/0x150 [ 84.205710][ T5330] ? __asan_memset+0x22/0x50 [ 84.205727][ T5330] ? hfsplus_brec_find+0x19d/0x520 [ 84.205743][ T5330] hfsplus_bmap_reserve+0x125/0x510 [ 84.205765][ T5330] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 84.205778][ T5330] __hfsplus_ext_cache_extent+0x89/0xe30 [ 84.205791][ T5330] hfsplus_file_extend+0x4af/0x1d70 [ 84.205811][ T5330] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 84.205830][ T5330] ? clean_bdev_aliases+0x62e/0x750 [ 84.205845][ T5330] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 84.205858][ T5330] hfsplus_get_block+0x42c/0x1670 [ 84.205881][ T5330] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.205901][ T5330] ? do_raw_spin_unlock+0x4d/0x210 [ 84.205916][ T5330] ? _raw_spin_unlock+0x28/0x50 [ 84.205937][ T5330] __block_write_begin_int+0x6c6/0x1910 [ 84.205957][ T5330] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.205975][ T5330] ? __pfx___block_write_begin_int+0x10/0x10 [ 84.205989][ T5330] cont_write_begin+0x737/0xae0 [ 84.206001][ T5330] ? irqentry_exit+0x59e/0x620 [ 84.206017][ T5330] ? __pfx_cont_write_begin+0x10/0x10 [ 84.206032][ T5330] hfsplus_write_begin+0x66/0xb0 [ 84.206048][ T5330] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.206065][ T5330] generic_perform_write+0x2e2/0x8f0 [ 84.206083][ T5330] ? __pfx_generic_perform_write+0x10/0x10 [ 84.206095][ T5330] ? file_update_time_flags+0x219/0x4a0 [ 84.206115][ T5330] ? __generic_file_write_iter+0xf9/0x230 [ 84.206127][ T5330] ? generic_file_write_iter+0x136/0x680 [ 84.206140][ T5330] generic_file_write_iter+0x14a/0x680 [ 84.206154][ T5330] ? __pfx_generic_file_write_iter+0x10/0x10 [ 84.206165][ T5330] ? do_raw_spin_lock+0x12b/0x2f0 [ 84.206178][ T5330] ? __lock_acquire+0x6b5/0x2cf0 [ 84.206193][ T5330] ? lockdep_hardirqs_on+0x7a/0x110 [ 84.206207][ T5330] ? kasan_save_track+0x4f/0x80 [ 84.206228][ T5330] ? aio_write+0x547/0x870 [ 84.206240][ T5330] aio_write+0x5cd/0x870 [ 84.206253][ T5330] ? __pfx_aio_write+0x10/0x10 [ 84.206271][ T5330] io_submit_one+0x7bb/0x14c0 [ 84.206300][ T5330] ? irqentry_exit+0x59e/0x620 [ 84.206312][ T5330] ? trace_irq_disable+0x3b/0x150 [ 84.206324][ T5330] ? __pfx_io_submit_one+0x10/0x10 [ 84.206339][ T5330] ? __might_fault+0xaf/0x130 [ 84.206355][ T5330] __se_sys_io_submit+0x195/0x340 [ 84.206373][ T5330] ? __pfx___se_sys_io_submit+0x10/0x10 [ 84.206394][ T5330] do_syscall_64+0x14d/0xf80 [ 84.206407][ T5330] ? trace_irq_disable+0x3b/0x150 [ 84.206416][ T5330] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.206428][ T5330] ? clear_bhb_loop+0x40/0x90 [ 84.206440][ T5330] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.206453][ T5330] RIP: 0033:0x7f9efe99c799 [ 84.206467][ T5330] 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 [ 84.206477][ T5330] RSP: 002b:00007f9eff867fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 84.206598][ T5330] RAX: ffffffffffffffda RBX: 00007f9efec15fa0 RCX: 00007f9efe99c799 [ 84.206612][ T5330] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f9eff81e000 [ 84.206623][ T5330] RBP: 00007f9efea32c99 R08: 0000000000000000 R09: 0000000000000000 [ 84.206632][ T5330] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.206640][ T5330] R13: 00007f9efec16038 R14: 00007f9efec15fa0 R15: 00007ffcc958b128 [ 84.206668][ T5330]