program: r0 = syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r1 = syz_open_dev$usbfs(&(0x7f0000000040), 0x400000001fb, 0x101301) ioctl$USBDEVFS_SUBMITURB(r1, 0x8038550a, &(0x7f0000000080)=@urb_type_control={0x2, {}, 0xfffffff8, 0x40, &(0x7f0000000000)={0x20, 0xc, 0xb, 0xfffd}, 0x8, 0x3, 0x8, 0x0, 0x2, 0x20000, 0x0}) getsockopt$PNPIPE_IFINDEX(0xffffffffffffffff, 0x113, 0x2, &(0x7f0000000140), &(0x7f0000000180)=0x4) r2 = creat(&(0x7f0000000300)='./file1\x00', 0x64) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r3, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r2, &(0x7f0000000000), 0x70000}]) ioctl$AUTOFS_DEV_IOCTL_EXPIRE(r2, 0xc018937c, &(0x7f0000000100)={{0x1, 0x1, 0x18, r0, {0x4}}, './bus\x00'}) [ 74.942647][ T4703] Bluetooth: hci0: command tx timeout [ 75.018832][ T5355] loop0: detected capacity change from 0 to 1024 [ 75.085212][ T5355] usb usb1: Requested nonsensical USBDEVFS_URB_ZERO_PACKET. [ 75.109622][ T5355] [ 75.110702][ T5355] ============================================ [ 75.113176][ T5355] WARNING: possible recursive locking detected [ 75.115524][ T5355] syzkaller #0 Not tainted [ 75.117479][ T5355] -------------------------------------------- [ 75.120043][ T5355] syz.0.0/5355 is trying to acquire lock: [ 75.122303][ T5355] ffff888052fa0108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 75.126774][ T5355] [ 75.126774][ T5355] but task is already holding lock: [ 75.129644][ T5355] ffff888052fa2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 75.134448][ T5355] [ 75.134448][ T5355] other info that might help us debug this: [ 75.137765][ T5355] Possible unsafe locking scenario: [ 75.137765][ T5355] [ 75.140888][ T5355] CPU0 [ 75.142315][ T5355] ---- [ 75.143841][ T5355] lock(&HFSPLUS_I(inode)->extents_lock); [ 75.146317][ T5355] lock(&HFSPLUS_I(inode)->extents_lock); [ 75.148817][ T5355] [ 75.148817][ T5355] *** DEADLOCK *** [ 75.148817][ T5355] [ 75.152226][ T5355] May be due to missing lock nesting notation [ 75.152226][ T5355] [ 75.155738][ T5355] 3 locks held by syz.0.0/5355: [ 75.157926][ T5355] #0: ffff888052fa2b78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xeb/0x550 [ 75.162430][ T5355] #1: ffff888052fa2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 75.166894][ T5355] #2: ffff88803f1700b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x15a/0x1d0 [ 75.170877][ T5355] [ 75.170877][ T5355] stack backtrace: [ 75.173234][ T5355] CPU: 0 UID: 0 PID: 5355 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 75.173246][ T5355] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 75.173254][ T5355] Call Trace: [ 75.173262][ T5355] [ 75.173268][ T5355] dump_stack_lvl+0x189/0x250 [ 75.173287][ T5355] ? __pfx_dump_stack_lvl+0x10/0x10 [ 75.173301][ T5355] ? __pfx__printk+0x10/0x10 [ 75.173317][ T5355] ? print_lock_name+0xde/0x100 [ 75.173331][ T5355] print_deadlock_bug+0x28b/0x2a0 [ 75.173344][ T5355] validate_chain+0x1a3f/0x2140 [ 75.173355][ T5355] ? __bfs+0x154/0x2a0 [ 75.173364][ T5355] ? check_path+0x21/0x40 [ 75.173373][ T5355] ? look_up_lock_class+0x74/0x170 [ 75.173436][ T5355] ? register_lock_class+0x51/0x320 [ 75.173455][ T5355] __lock_acquire+0xab9/0xd20 [ 75.173471][ T5355] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.173482][ T5355] lock_acquire+0x120/0x360 [ 75.173496][ T5355] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.173509][ T5355] __mutex_lock+0x187/0x1350 [ 75.173526][ T5355] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.173537][ T5355] ? check_path+0x21/0x40 [ 75.173549][ T5355] ? check_noncircular+0xe0/0x160 [ 75.173561][ T5355] ? hfsplus_file_extend+0x1fc/0x1990 [ 75.173570][ T5355] ? lockdep_unlock+0x89/0x120 [ 75.173582][ T5355] ? __pfx___mutex_lock+0x10/0x10 [ 75.173594][ T5355] hfsplus_file_extend+0x1fc/0x1990 [ 75.173604][ T5355] ? __lock_acquire+0xab9/0xd20 [ 75.173620][ T5355] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 75.173631][ T5355] ? __pfx___mutex_trylock_common+0x10/0x10 [ 75.173641][ T5355] ? __se_sys_io_submit+0x185/0x2f0 [ 75.173652][ T5355] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.173663][ T5355] ? rcu_is_watching+0x15/0xb0 [ 75.173674][ T5355] ? trace_contention_end+0x39/0x120 [ 75.173685][ T5355] ? __mutex_lock+0x335/0x1350 [ 75.173696][ T5355] ? hfsplus_brec_find+0x191/0x500 [ 75.173709][ T5355] hfsplus_bmap_reserve+0x122/0x500 [ 75.173723][ T5355] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 75.173735][ T5355] __hfsplus_ext_cache_extent+0x89/0xe30 [ 75.173748][ T5355] hfsplus_file_extend+0x444/0x1990 [ 75.173762][ T5355] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 75.173774][ T5355] ? clean_bdev_aliases+0x5c9/0x6b0 [ 75.173790][ T5355] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 75.173807][ T5355] hfsplus_get_block+0x411/0x1530 [ 75.173821][ T5355] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.173832][ T5355] ? do_raw_spin_unlock+0x4d/0x240 [ 75.173844][ T5355] ? _raw_spin_unlock+0x28/0x50 [ 75.173859][ T5355] __block_write_begin_int+0x6b2/0x1900 [ 75.173871][ T5355] ? folio_add_lru+0x1b2/0x3d0 [ 75.173886][ T5355] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.173896][ T5355] ? __pfx___block_write_begin_int+0x10/0x10 [ 75.173908][ T5355] cont_write_begin+0x789/0xb50 [ 75.173920][ T5355] ? __pfx_cont_write_begin+0x10/0x10 [ 75.173930][ T5355] ? __pfx___might_resched+0x10/0x10 [ 75.173940][ T5355] ? __mark_inode_dirty+0x3d2/0xe10 [ 75.173956][ T5355] ? folio_unlock+0x101/0x160 [ 75.173971][ T5355] hfsplus_write_begin+0x66/0xb0 [ 75.173980][ T5355] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.173992][ T5355] generic_perform_write+0x2c2/0x900 [ 75.174005][ T5355] ? __pfx_generic_perform_write+0x10/0x10 [ 75.174015][ T5355] ? file_update_time+0x2da/0x490 [ 75.174025][ T5355] ? __generic_file_write_iter+0xf9/0x230 [ 75.174034][ T5355] ? generic_file_write_iter+0x103/0x550 [ 75.174044][ T5355] generic_file_write_iter+0x117/0x550 [ 75.174055][ T5355] ? __pfx_generic_file_write_iter+0x10/0x10 [ 75.174065][ T5355] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.174081][ T5355] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 75.174097][ T5355] ? __pfx_aa_file_perm+0x10/0x10 [ 75.174117][ T5355] ? __lock_acquire+0xab9/0xd20 [ 75.174136][ T5355] ? aio_write+0x4c4/0x7a0 [ 75.174151][ T5355] aio_write+0x535/0x7a0 [ 75.174167][ T5355] ? __pfx_aio_write+0x10/0x10 [ 75.174184][ T5355] ? __might_fault+0xb0/0x130 [ 75.174200][ T5355] io_submit_one+0x78b/0x1310 [ 75.174217][ T5355] ? __pfx_io_submit_one+0x10/0x10 [ 75.174232][ T5355] ? __might_fault+0xb0/0x130 [ 75.174280][ T5355] ? __might_fault+0xb0/0x130 [ 75.174295][ T5355] __se_sys_io_submit+0x185/0x2f0 [ 75.174310][ T5355] ? __pfx___se_sys_io_submit+0x10/0x10 [ 75.174325][ T5355] ? do_syscall_64+0xbe/0x3b0 [ 75.174336][ T5355] do_syscall_64+0xfa/0x3b0 [ 75.174346][ T5355] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.174360][ T5355] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.174369][ T5355] ? clear_bhb_loop+0x60/0xb0 [ 75.174378][ T5355] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.174388][ T5355] RIP: 0033:0x7f03e5f8ebe9 [ 75.174399][ T5355] 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 [ 75.174407][ T5355] RSP: 002b:00007f03e6d6e038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 75.174427][ T5355] RAX: ffffffffffffffda RBX: 00007f03e61c5fa0 RCX: 00007f03e5f8ebe9 [ 75.174434][ T5355] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f03e6d24000 [ 75.174443][ T5355] RBP: 00007f03e6011e19 R08: 0000000000000000 R09: 0000000000000000 [ 75.174449][ T5355] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 75.174455][ T5355] R13: 00007f03e61c6038 R14: 00007f03e61c5fa0 R15: 00007ffc65ff7858 [ 75.174466][ T5355]