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}]) [ 75.641736][ T5300] Bluetooth: hci0: command tx timeout [ 75.730533][ T5320] loop0: detected capacity change from 0 to 1024 [ 75.905522][ T5320] [ 75.906828][ T5320] ============================================ [ 75.910239][ T5320] WARNING: possible recursive locking detected [ 75.913026][ T5320] syzkaller #0 Not tainted [ 75.915126][ T5320] -------------------------------------------- [ 75.918686][ T5320] syz.0.0/5320 is trying to acquire lock: [ 75.921503][ T5320] ffff888050fb8108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 75.927175][ T5320] [ 75.927175][ T5320] but task is already holding lock: [ 75.931451][ T5320] ffff888050fba988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 75.936146][ T5320] [ 75.936146][ T5320] other info that might help us debug this: [ 75.940029][ T5320] Possible unsafe locking scenario: [ 75.940029][ T5320] [ 75.944085][ T5320] CPU0 [ 75.945488][ T5320] ---- [ 75.947369][ T5320] lock(&HFSPLUS_I(inode)->extents_lock); [ 75.951244][ T5320] lock(&HFSPLUS_I(inode)->extents_lock); [ 75.954030][ T5320] [ 75.954030][ T5320] *** DEADLOCK *** [ 75.954030][ T5320] [ 75.958946][ T5320] May be due to missing lock nesting notation [ 75.958946][ T5320] [ 75.964770][ T5320] 3 locks held by syz.0.0/5320: [ 75.967312][ T5320] #0: ffff888050fbab78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xeb/0x550 [ 75.974402][ T5320] #1: ffff888050fba988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 75.981095][ T5320] #2: ffff8880361f20b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x290 [ 75.987261][ T5320] [ 75.987261][ T5320] stack backtrace: [ 75.991397][ T5320] CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 75.991417][ T5320] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 75.991463][ T5320] Call Trace: [ 75.991471][ T5320] [ 75.991480][ T5320] dump_stack_lvl+0x189/0x250 [ 75.991543][ T5320] ? __pfx_dump_stack_lvl+0x10/0x10 [ 75.991559][ T5320] ? __pfx__printk+0x10/0x10 [ 75.991573][ T5320] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 75.991706][ T5320] ? print_lock_name+0xde/0x100 [ 75.991720][ T5320] print_deadlock_bug+0x28b/0x2a0 [ 75.991798][ T5320] validate_chain+0x1a3f/0x2140 [ 75.991817][ T5320] ? __bfs+0x154/0x2a0 [ 75.991834][ T5320] ? check_path+0x21/0x40 [ 75.991907][ T5320] ? look_up_lock_class+0x74/0x170 [ 75.991931][ T5320] ? register_lock_class+0x51/0x320 [ 75.991952][ T5320] __lock_acquire+0xab9/0xd20 [ 75.992035][ T5320] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 75.992058][ T5320] lock_acquire+0x120/0x360 [ 75.992134][ T5320] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 75.992223][ T5320] __mutex_lock+0x187/0x1350 [ 75.992251][ T5320] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 75.992332][ T5320] ? check_path+0x21/0x40 [ 75.992350][ T5320] ? check_noncircular+0xe0/0x160 [ 75.992368][ T5320] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 75.992422][ T5320] ? lockdep_unlock+0x89/0x120 [ 75.992480][ T5320] ? __pfx___mutex_lock+0x10/0x10 [ 75.992508][ T5320] hfsplus_file_extend+0x1f8/0x1ba0 [ 75.992526][ T5320] ? __lock_acquire+0xab9/0xd20 [ 75.992580][ T5320] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 75.992597][ T5320] ? __pfx___mutex_trylock_common+0x10/0x10 [ 75.992613][ T5320] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.992703][ T5320] ? rcu_is_watching+0x15/0xb0 [ 75.992719][ T5320] ? trace_contention_end+0x39/0x120 [ 75.992738][ T5320] ? __asan_memset+0x22/0x50 [ 75.992815][ T5320] ? hfsplus_brec_find+0x1a9/0x510 [ 75.992829][ T5320] hfsplus_bmap_reserve+0x122/0x500 [ 75.992913][ T5320] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 75.992936][ T5320] __hfsplus_ext_cache_extent+0x89/0xe30 [ 75.992956][ T5320] hfsplus_file_extend+0x437/0x1ba0 [ 75.993049][ T5320] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 75.993067][ T5320] ? clean_bdev_aliases+0x5c9/0x6b0 [ 75.993125][ T5320] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 75.993143][ T5320] hfsplus_get_block+0x40a/0x15d0 [ 75.993200][ T5320] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.993215][ T5320] ? do_raw_spin_unlock+0x4d/0x240 [ 75.993275][ T5320] ? _raw_spin_unlock+0x28/0x50 [ 75.993293][ T5320] __block_write_begin_int+0x6b5/0x1900 [ 75.993308][ T5320] ? __pfx_workingset_update_node+0x10/0x10 [ 75.993322][ T5320] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.993379][ T5320] ? __pfx___block_write_begin_int+0x10/0x10 [ 75.993435][ T5320] cont_write_begin+0x789/0xb50 [ 75.993454][ T5320] ? __pfx_cont_write_begin+0x10/0x10 [ 75.993467][ T5320] ? __pfx___might_resched+0x10/0x10 [ 75.993524][ T5320] ? __mark_inode_dirty+0x3d2/0xe10 [ 75.993539][ T5320] ? folio_unlock+0x101/0x160 [ 75.993559][ T5320] hfsplus_write_begin+0x66/0xb0 [ 75.993636][ T5320] ? __pfx_hfsplus_get_block+0x10/0x10 [ 75.993655][ T5320] generic_perform_write+0x2c5/0x900 [ 75.993671][ T5320] ? __pfx_generic_perform_write+0x10/0x10 [ 75.993740][ T5320] ? file_update_time+0x2da/0x490 [ 75.993757][ T5320] ? __generic_file_write_iter+0xf9/0x230 [ 75.993771][ T5320] ? generic_file_write_iter+0x103/0x550 [ 75.993784][ T5320] generic_file_write_iter+0x117/0x550 [ 75.993836][ T5320] ? __pfx_generic_file_write_iter+0x10/0x10 [ 75.993888][ T5320] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 75.993906][ T5320] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 75.993923][ T5320] ? __pfx_aa_file_perm+0x10/0x10 [ 75.993999][ T5320] ? __lock_acquire+0xab9/0xd20 [ 75.994016][ T5320] ? aio_write+0x4c4/0x7a0 [ 75.994066][ T5320] aio_write+0x535/0x7a0 [ 75.994120][ T5320] ? __pfx_aio_write+0x10/0x10 [ 75.994134][ T5320] ? __might_fault+0xb0/0x130 [ 75.994156][ T5320] io_submit_one+0x78b/0x1310 [ 75.994226][ T5320] ? __pfx_io_submit_one+0x10/0x10 [ 75.994238][ T5320] ? __might_fault+0xb0/0x130 [ 75.994256][ T5320] ? __might_fault+0xb0/0x130 [ 75.994315][ T5320] __se_sys_io_submit+0x185/0x2f0 [ 75.994335][ T5320] ? __pfx___se_sys_io_submit+0x10/0x10 [ 75.994354][ T5320] ? do_syscall_64+0xbe/0xfa0 [ 75.994449][ T5320] do_syscall_64+0xfa/0xfa0 [ 75.994465][ T5320] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.994523][ T5320] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.994537][ T5320] ? clear_bhb_loop+0x60/0xb0 [ 75.994551][ T5320] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.994565][ T5320] RIP: 0033:0x7f6a3858f6c9 [ 75.994656][ T5320] 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 [ 75.994670][ T5320] RSP: 002b:00007f6a39432038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 75.994687][ T5320] RAX: ffffffffffffffda RBX: 00007f6a387e5fa0 RCX: 00007f6a3858f6c9 [ 75.994797][ T5320] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f6a393e8000 [ 75.994807][ T5320] RBP: 00007f6a38611f91 R08: 0000000000000000 R09: 0000000000000000 [ 75.994816][ T5320] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 75.994824][ T5320] R13: 00007f6a387e6038 R14: 00007f6a387e5fa0 R15: 00007fff674d99e8 [ 75.994837][ T5320]