program: r0 = syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") ioctl$F2FS_IOC_START_ATOMIC_WRITE(r0, 0xf501, 0x0) (async) r1 = creat(&(0x7f0000000240)='./file1\x00', 0x100) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r2, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r1, &(0x7f0000000000), 0x70000}]) (async) r3 = syz_open_dev$vim2m(&(0x7f0000000000), 0x7, 0x2) ioctl$vim2m_VIDIOC_S_FMT(r3, 0xc0d05605, &(0x7f00000000c0)={0x1, @pix_mp={0x1, 0x3, 0x35315241, 0x1, 0x3, [{0x2, 0x944}, {0x5}, {}, {0xa15, 0x2}, {0x10, 0xe}, {0x8, 0x1}, {0xd, 0x3}, {0x80, 0x9}], 0xc, 0x9, 0x6, 0x1}}) (async) bpf$MAP_CREATE_RINGBUF(0x0, &(0x7f0000000140)={0x1b, 0x0, 0x0, 0x8, 0x0, r1, 0xfffffff2, '\x00', 0x0, 0xffffffffffffffff, 0x0, 0x5, 0x4}, 0x50) (async) bpf$OBJ_PIN_MAP(0x6, &(0x7f00000001c0)=@o_path={&(0x7f0000000100)='./file1\x00', r1, 0x4000, r1}, 0x9) [ 73.563040][ T4663] Bluetooth: hci0: command tx timeout [ 73.637508][ T5317] loop0: detected capacity change from 0 to 1024 [ 73.711517][ T5317] [ 73.712557][ T5317] ============================================ [ 73.715177][ T5317] WARNING: possible recursive locking detected [ 73.717662][ T5317] syzkaller #0 Not tainted [ 73.719718][ T5317] -------------------------------------------- [ 73.722607][ T5317] syz.0.0/5317 is trying to acquire lock: [ 73.725175][ T5317] ffff888037924e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 73.730463][ T5317] [ 73.730463][ T5317] but task is already holding lock: [ 73.734241][ T5317] ffff888043b7e2c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 73.739439][ T5317] [ 73.739439][ T5317] other info that might help us debug this: [ 73.743717][ T5317] Possible unsafe locking scenario: [ 73.743717][ T5317] [ 73.747241][ T5317] CPU0 [ 73.748697][ T5317] ---- [ 73.750195][ T5317] lock(&HFSPLUS_I(inode)->extents_lock); [ 73.752751][ T5317] lock(&HFSPLUS_I(inode)->extents_lock); [ 73.755238][ T5317] [ 73.755238][ T5317] *** DEADLOCK *** [ 73.755238][ T5317] [ 73.759087][ T5317] May be due to missing lock nesting notation [ 73.759087][ T5317] [ 73.762816][ T5317] 3 locks held by syz.0.0/5317: [ 73.765136][ T5317] #0: ffff888043b7e4b8 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: generic_file_write_iter+0x11e/0x680 [ 73.772930][ T5317] #1: ffff888043b7e2c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 73.778419][ T5317] #2: ffff8880387f40b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x2d0 [ 73.782643][ T5317] [ 73.782643][ T5317] stack backtrace: [ 73.785004][ T5317] CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 73.785017][ T5317] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 73.785083][ T5317] Call Trace: [ 73.785090][ T5317] [ 73.785096][ T5317] dump_stack_lvl+0xe8/0x150 [ 73.785115][ T5317] print_deadlock_bug+0x279/0x290 [ 73.785175][ T5317] __lock_acquire+0x253f/0x2cf0 [ 73.785184][ T5317] ? unwind_next_frame+0xa5/0x23c0 [ 73.785194][ T5317] ? __bfs+0x153/0x290 [ 73.785202][ T5317] ? __pfx_hlock_conflict+0x10/0x10 [ 73.785216][ T5317] lock_acquire+0xf0/0x2e0 [ 73.785226][ T5317] ? hfsplus_file_extend+0x215/0x1d70 [ 73.785242][ T5317] __mutex_lock+0x19f/0x1300 [ 73.785452][ T5317] ? hfsplus_file_extend+0x215/0x1d70 [ 73.785462][ T5317] ? __bfs+0x153/0x290 [ 73.785470][ T5317] ? hfsplus_file_extend+0x215/0x1d70 [ 73.785483][ T5317] ? __pfx___mutex_lock+0x10/0x10 [ 73.785496][ T5317] ? lockdep_unlock+0x5d/0xd0 [ 73.785505][ T5317] ? __lock_acquire+0x146e/0x2cf0 [ 73.785516][ T5317] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 73.785529][ T5317] hfsplus_file_extend+0x215/0x1d70 [ 73.785543][ T5317] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 73.785555][ T5317] ? __pfx___mutex_trylock_common+0x10/0x10 [ 73.785569][ T5317] ? rcu_is_watching+0x15/0xb0 [ 73.785583][ T5317] ? trace_contention_end+0x3d/0x150 [ 73.785596][ T5317] ? __asan_memset+0x22/0x50 [ 73.785609][ T5317] ? hfsplus_brec_find+0x19d/0x520 [ 73.785620][ T5317] hfsplus_bmap_reserve+0x125/0x510 [ 73.785632][ T5317] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 73.785646][ T5317] __hfsplus_ext_cache_extent+0x89/0xe30 [ 73.785656][ T5317] hfsplus_file_extend+0x4af/0x1d70 [ 73.785666][ T5317] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 73.785675][ T5317] ? clean_bdev_aliases+0x62e/0x750 [ 73.785685][ T5317] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 73.785695][ T5317] hfsplus_get_block+0x42c/0x1670 [ 73.785705][ T5317] ? __pfx_hfsplus_get_block+0x10/0x10 [ 73.785713][ T5317] ? do_raw_spin_unlock+0x4d/0x210 [ 73.785719][ T5317] ? _raw_spin_unlock+0x28/0x50 [ 73.785727][ T5317] __block_write_begin_int+0x6c6/0x1910 [ 73.785735][ T5317] ? __pfx_hfsplus_get_block+0x10/0x10 [ 73.785743][ T5317] ? __pfx___block_write_begin_int+0x10/0x10 [ 73.785750][ T5317] cont_write_begin+0x737/0xae0 [ 73.785757][ T5317] ? irqentry_exit+0x59e/0x620 [ 73.785771][ T5317] ? __pfx_cont_write_begin+0x10/0x10 [ 73.785782][ T5317] hfsplus_write_begin+0x66/0xb0 [ 73.785792][ T5317] ? __pfx_hfsplus_get_block+0x10/0x10 [ 73.785804][ T5317] generic_perform_write+0x2e2/0x8f0 [ 73.785816][ T5317] ? __pfx_generic_perform_write+0x10/0x10 [ 73.785824][ T5317] ? file_update_time_flags+0x219/0x4a0 [ 73.785838][ T5317] ? __generic_file_write_iter+0xf9/0x230 [ 73.785847][ T5317] ? generic_file_write_iter+0x136/0x680 [ 73.785857][ T5317] generic_file_write_iter+0x14a/0x680 [ 73.785873][ T5317] ? __pfx_generic_file_write_iter+0x10/0x10 [ 73.785888][ T5317] ? do_raw_spin_lock+0x12b/0x2f0 [ 73.785895][ T5317] ? __lock_acquire+0x6b5/0x2cf0 [ 73.785903][ T5317] ? lockdep_hardirqs_on+0x7a/0x110 [ 73.785915][ T5317] ? kasan_save_track+0x4f/0x80 [ 73.785934][ T5317] ? aio_write+0x547/0x870 [ 73.785947][ T5317] aio_write+0x5cd/0x870 [ 73.785961][ T5317] ? __pfx_aio_write+0x10/0x10 [ 73.785981][ T5317] io_submit_one+0x7bb/0x14c0 [ 73.785995][ T5317] ? irqentry_exit+0x59e/0x620 [ 73.786011][ T5317] ? trace_irq_disable+0x3b/0x150 [ 73.786021][ T5317] ? __pfx_io_submit_one+0x10/0x10 [ 73.786031][ T5317] ? __might_fault+0xaf/0x130 [ 73.786039][ T5317] __se_sys_io_submit+0x195/0x340 [ 73.786048][ T5317] ? __pfx___se_sys_io_submit+0x10/0x10 [ 73.786058][ T5317] do_syscall_64+0x14d/0xf80 [ 73.786067][ T5317] ? trace_irq_disable+0x3b/0x150 [ 73.786075][ T5317] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 73.786082][ T5317] ? clear_bhb_loop+0x40/0x90 [ 73.786091][ T5317] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 73.786100][ T5317] RIP: 0033:0x7fab7e39c629 [ 73.787129][ T5317] 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 [ 73.787139][ T5317] RSP: 002b:00007fab7f336028 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 73.787152][ T5317] RAX: ffffffffffffffda RBX: 00007fab7e615fa0 RCX: 00007fab7e39c629 [ 73.787159][ T5317] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007fab7f2ec000 [ 73.787165][ T5317] RBP: 00007fab7e432b39 R08: 0000000000000000 R09: 0000000000000000 [ 73.787171][ T5317] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 73.787177][ T5317] R13: 00007fab7e616038 R14: 00007fab7e615fa0 R15: 00007ffeec444878 [ 73.787187][ T5317]