program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = openat$ndctl0(0xffffffffffffff9c, &(0x7f0000000000), 0xd0000, 0x0) ioctl$NS_GET_OWNER_UID(r0, 0xb704, 0x0) r1 = add_key(&(0x7f0000000140)='cifs.spnego\x00', &(0x7f0000000040)={'syz', 0x3}, 0x0, 0x0, 0xfffffffffffffffe) pipe2$watch_queue(&(0x7f0000000180)={0xffffffffffffffff}, 0x80) keyctl$KEYCTL_WATCH_KEY(0x20, r1, r2, 0x0) request_key(&(0x7f00000001c0)='.dead\x00', &(0x7f0000000280)={'syz', 0x2}, &(0x7f00000002c0)='[:[*(\\^/^\x00', r1) keyctl$KEYCTL_WATCH_KEY(0x15, r1, 0xffffffffffffffff, 0x0) r3 = add_key$keyring(&(0x7f0000000180), &(0x7f0000000240)={'syz', 0x2}, 0x0, 0x0, r1) add_key$keyring(&(0x7f0000000000), &(0x7f0000000140)={'syz', 0x3}, 0x0, 0x0, r3) r4 = creat(&(0x7f0000000100)='./file1\x00', 0x10) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r5, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r4, &(0x7f0000000000), 0x70000}]) [ 75.823054][ T4707] Bluetooth: hci0: command tx timeout [ 75.900741][ T5358] loop0: detected capacity change from 0 to 1024 [ 75.980091][ T5358] [ 75.981274][ T5358] ============================================ [ 75.984127][ T5358] WARNING: possible recursive locking detected [ 75.986858][ T5358] syzkaller #0 Not tainted [ 75.988943][ T5358] -------------------------------------------- [ 75.991425][ T5358] syz.0.0/5358 is trying to acquire lock: [ 75.993799][ T5358] ffff888052da4108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 75.998152][ T5358] [ 75.998152][ T5358] but task is already holding lock: [ 76.001146][ T5358] ffff888052da6988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 76.005737][ T5358] [ 76.005737][ T5358] other info that might help us debug this: [ 76.009029][ T5358] Possible unsafe locking scenario: [ 76.009029][ T5358] [ 76.012171][ T5358] CPU0 [ 76.013663][ T5358] ---- [ 76.015121][ T5358] lock(&HFSPLUS_I(inode)->extents_lock); [ 76.017565][ T5358] lock(&HFSPLUS_I(inode)->extents_lock); [ 76.019845][ T5358] [ 76.019845][ T5358] *** DEADLOCK *** [ 76.019845][ T5358] [ 76.023245][ T5358] May be due to missing lock nesting notation [ 76.023245][ T5358] [ 76.026306][ T5358] 3 locks held by syz.0.0/5358: [ 76.028772][ T5358] #0: ffff888052da6b78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xeb/0x550 [ 76.034570][ T5358] #1: ffff888052da6988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 76.039755][ T5358] #2: ffff888000f5a0b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x15a/0x1d0 [ 76.044513][ T5358] [ 76.044513][ T5358] stack backtrace: [ 76.047290][ T5358] CPU: 0 UID: 0 PID: 5358 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 76.047330][ T5358] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 76.047338][ T5358] Call Trace: [ 76.047347][ T5358] [ 76.047353][ T5358] dump_stack_lvl+0x189/0x250 [ 76.047372][ T5358] ? __pfx_dump_stack_lvl+0x10/0x10 [ 76.047386][ T5358] ? __pfx__printk+0x10/0x10 [ 76.047402][ T5358] ? print_lock_name+0xde/0x100 [ 76.047417][ T5358] print_deadlock_bug+0x28b/0x2a0 [ 76.047431][ T5358] validate_chain+0x1a3f/0x2140 [ 76.047442][ T5358] ? __bfs+0x154/0x2a0 [ 76.047452][ T5358] ? check_path+0x21/0x40 [ 76.047463][ T5358] ? look_up_lock_class+0x74/0x170 [ 76.047532][ T5358] ? register_lock_class+0x51/0x320 [ 76.047549][ T5358] __lock_acquire+0xab9/0xd20 [ 76.047565][ T5358] ? hfsplus_file_extend+0x1fc/0x1990 [ 76.047577][ T5358] lock_acquire+0x120/0x360 [ 76.047594][ T5358] ? hfsplus_file_extend+0x1fc/0x1990 [ 76.047609][ T5358] __mutex_lock+0x187/0x1350 [ 76.047624][ T5358] ? hfsplus_file_extend+0x1fc/0x1990 [ 76.047635][ T5358] ? check_path+0x21/0x40 [ 76.047644][ T5358] ? check_noncircular+0xe0/0x160 [ 76.047656][ T5358] ? hfsplus_file_extend+0x1fc/0x1990 [ 76.047666][ T5358] ? lockdep_unlock+0x89/0x120 [ 76.047681][ T5358] ? __pfx___mutex_lock+0x10/0x10 [ 76.047701][ T5358] hfsplus_file_extend+0x1fc/0x1990 [ 76.047711][ T5358] ? __lock_acquire+0xab9/0xd20 [ 76.047729][ T5358] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 76.047740][ T5358] ? __pfx___mutex_trylock_common+0x10/0x10 [ 76.047751][ T5358] ? __se_sys_io_submit+0x185/0x2f0 [ 76.047764][ T5358] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.047776][ T5358] ? rcu_is_watching+0x15/0xb0 [ 76.047787][ T5358] ? trace_contention_end+0x39/0x120 [ 76.047800][ T5358] ? __mutex_lock+0x335/0x1350 [ 76.047816][ T5358] ? hfsplus_brec_find+0x191/0x500 [ 76.047834][ T5358] hfsplus_bmap_reserve+0x122/0x500 [ 76.047851][ T5358] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 76.047897][ T5358] __hfsplus_ext_cache_extent+0x89/0xe30 [ 76.047915][ T5358] hfsplus_file_extend+0x444/0x1990 [ 76.047931][ T5358] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 76.047946][ T5358] ? clean_bdev_aliases+0x5c9/0x6b0 [ 76.047966][ T5358] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 76.047986][ T5358] hfsplus_get_block+0x411/0x1530 [ 76.048000][ T5358] ? __pfx_hfsplus_get_block+0x10/0x10 [ 76.048012][ T5358] ? do_raw_spin_unlock+0x4d/0x240 [ 76.048028][ T5358] ? _raw_spin_unlock+0x28/0x50 [ 76.048044][ T5358] __block_write_begin_int+0x6b5/0x1900 [ 76.048058][ T5358] ? folio_add_lru+0x1b2/0x3d0 [ 76.048077][ T5358] ? __pfx_hfsplus_get_block+0x10/0x10 [ 76.048089][ T5358] ? __pfx___block_write_begin_int+0x10/0x10 [ 76.048103][ T5358] cont_write_begin+0x789/0xb50 [ 76.048117][ T5358] ? __pfx_cont_write_begin+0x10/0x10 [ 76.048128][ T5358] ? __pfx___might_resched+0x10/0x10 [ 76.048140][ T5358] ? __mark_inode_dirty+0x3d2/0xe10 [ 76.048159][ T5358] ? folio_unlock+0x101/0x160 [ 76.048176][ T5358] hfsplus_write_begin+0x66/0xb0 [ 76.048187][ T5358] ? __pfx_hfsplus_get_block+0x10/0x10 [ 76.048200][ T5358] generic_perform_write+0x2c5/0x900 [ 76.048215][ T5358] ? __pfx_generic_perform_write+0x10/0x10 [ 76.048226][ T5358] ? file_update_time+0x2da/0x490 [ 76.048238][ T5358] ? __generic_file_write_iter+0xf9/0x230 [ 76.048250][ T5358] ? generic_file_write_iter+0x103/0x550 [ 76.048262][ T5358] generic_file_write_iter+0x117/0x550 [ 76.048274][ T5358] ? __pfx_generic_file_write_iter+0x10/0x10 [ 76.048286][ T5358] ? lockdep_hardirqs_on+0x9c/0x150 [ 76.048315][ T5358] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 76.048333][ T5358] ? __pfx_aa_file_perm+0x10/0x10 [ 76.048355][ T5358] ? __lock_acquire+0xab9/0xd20 [ 76.048377][ T5358] ? aio_write+0x4c4/0x7a0 [ 76.048395][ T5358] aio_write+0x535/0x7a0 [ 76.048413][ T5358] ? __pfx_aio_write+0x10/0x10 [ 76.048432][ T5358] ? __might_fault+0xb0/0x130 [ 76.048451][ T5358] io_submit_one+0x78b/0x1310 [ 76.048472][ T5358] ? __pfx_io_submit_one+0x10/0x10 [ 76.048488][ T5358] ? __might_fault+0xb0/0x130 [ 76.048504][ T5358] ? __might_fault+0xb0/0x130 [ 76.048516][ T5358] __se_sys_io_submit+0x185/0x2f0 [ 76.048532][ T5358] ? __pfx___se_sys_io_submit+0x10/0x10 [ 76.048549][ T5358] ? do_syscall_64+0xbe/0x3b0 [ 76.048566][ T5358] do_syscall_64+0xfa/0x3b0 [ 76.048584][ T5358] ? lockdep_hardirqs_on+0x9c/0x150 [ 76.048601][ T5358] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.048614][ T5358] ? clear_bhb_loop+0x60/0xb0 [ 76.048627][ T5358] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.048640][ T5358] RIP: 0033:0x7f75c638ebe9 [ 76.048654][ T5358] 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 [ 76.048665][ T5358] RSP: 002b:00007f75c7231038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 76.048678][ T5358] RAX: ffffffffffffffda RBX: 00007f75c65c5fa0 RCX: 00007f75c638ebe9 [ 76.048688][ T5358] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f75c71e7000 [ 76.048696][ T5358] RBP: 00007f75c6411e19 R08: 0000000000000000 R09: 0000000000000000 [ 76.048703][ T5358] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.048710][ T5358] R13: 00007f75c65c6038 R14: 00007f75c65c5fa0 R15: 00007fff7fd4e3c8 [ 76.048721][ T5358]