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(0x7, &(0x7f0000000000)=0x0) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 84.728451][ T4670] Bluetooth: hci0: command tx timeout [ 84.794790][ T5329] loop0: detected capacity change from 0 to 1024 [ 84.870987][ T5329] [ 84.872138][ T5329] ============================================ [ 84.874899][ T5329] WARNING: possible recursive locking detected [ 84.877686][ T5329] syzkaller #0 Not tainted [ 84.879624][ T5329] -------------------------------------------- [ 84.882526][ T5329] syz.0.0/5329 is trying to acquire lock: [ 84.884946][ T5329] ffff8880528bc108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 84.889809][ T5329] [ 84.889809][ T5329] but task is already holding lock: [ 84.892946][ T5329] ffff8880528be988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 84.897506][ T5329] [ 84.897506][ T5329] other info that might help us debug this: [ 84.901248][ T5329] Possible unsafe locking scenario: [ 84.901248][ T5329] [ 84.904945][ T5329] CPU0 [ 84.906500][ T5329] ---- [ 84.908043][ T5329] lock(&HFSPLUS_I(inode)->extents_lock); [ 84.910642][ T5329] lock(&HFSPLUS_I(inode)->extents_lock); [ 84.913295][ T5329] [ 84.913295][ T5329] *** DEADLOCK *** [ 84.913295][ T5329] [ 84.916856][ T5329] May be due to missing lock nesting notation [ 84.916856][ T5329] [ 84.920530][ T5329] 3 locks held by syz.0.0/5329: [ 84.922667][ T5329] #0: ffff8880528beb78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xeb/0x550 [ 84.927573][ T5329] #1: ffff8880528be988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1ba0 [ 84.932689][ T5329] #2: ffff8880111940b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x290 [ 84.937180][ T5329] [ 84.937180][ T5329] stack backtrace: [ 84.939752][ T5329] CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 84.939767][ T5329] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 84.939775][ T5329] Call Trace: [ 84.939782][ T5329] [ 84.939788][ T5329] dump_stack_lvl+0x189/0x250 [ 84.939807][ T5329] ? __pfx_dump_stack_lvl+0x10/0x10 [ 84.939820][ T5329] ? __pfx__printk+0x10/0x10 [ 84.939831][ T5329] ? print_lock_name+0xde/0x100 [ 84.939842][ T5329] print_deadlock_bug+0x28b/0x2a0 [ 84.939857][ T5329] validate_chain+0x1a3f/0x2140 [ 84.939870][ T5329] ? __bfs+0x154/0x2a0 [ 84.939880][ T5329] ? generic_file_write_iter+0x117/0x550 [ 84.939898][ T5329] ? check_path+0x21/0x40 [ 84.939910][ T5329] ? look_up_lock_class+0x74/0x170 [ 84.939967][ T5329] ? register_lock_class+0x51/0x320 [ 84.939976][ T5329] __lock_acquire+0xab9/0xd20 [ 84.939984][ T5329] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 84.939992][ T5329] lock_acquire+0x120/0x360 [ 84.939999][ T5329] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 84.940008][ T5329] __mutex_lock+0x187/0x1350 [ 84.940018][ T5329] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 84.940026][ T5329] ? check_path+0x21/0x40 [ 84.940033][ T5329] ? check_noncircular+0xe0/0x160 [ 84.940041][ T5329] ? hfsplus_file_extend+0x1f8/0x1ba0 [ 84.940049][ T5329] ? lockdep_unlock+0x89/0x120 [ 84.940062][ T5329] ? __pfx___mutex_lock+0x10/0x10 [ 84.940076][ T5329] hfsplus_file_extend+0x1f8/0x1ba0 [ 84.940087][ T5329] ? __lock_acquire+0xab9/0xd20 [ 84.940098][ T5329] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 84.940111][ T5329] ? __pfx___mutex_trylock_common+0x10/0x10 [ 84.940123][ T5329] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.940134][ T5329] ? rcu_is_watching+0x15/0xb0 [ 84.940146][ T5329] ? trace_contention_end+0x39/0x120 [ 84.940153][ T5329] ? __asan_memset+0x22/0x50 [ 84.940161][ T5329] ? hfsplus_brec_find+0x1a9/0x510 [ 84.940168][ T5329] hfsplus_bmap_reserve+0x122/0x500 [ 84.940183][ T5329] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 84.940196][ T5329] __hfsplus_ext_cache_extent+0x89/0xe30 [ 84.940209][ T5329] hfsplus_file_extend+0x437/0x1ba0 [ 84.940223][ T5329] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 84.940237][ T5329] ? clean_bdev_aliases+0x5c9/0x6b0 [ 84.940250][ T5329] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 84.940260][ T5329] hfsplus_get_block+0x40a/0x15d0 [ 84.940273][ T5329] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.940285][ T5329] ? do_raw_spin_unlock+0x4d/0x240 [ 84.940299][ T5329] ? _raw_spin_unlock+0x28/0x50 [ 84.940310][ T5329] __block_write_begin_int+0x6b5/0x1900 [ 84.940322][ T5329] ? __pfx_workingset_update_node+0x10/0x10 [ 84.940335][ T5329] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.940347][ T5329] ? __pfx___block_write_begin_int+0x10/0x10 [ 84.940360][ T5329] cont_write_begin+0x789/0xb50 [ 84.940374][ T5329] ? __pfx_cont_write_begin+0x10/0x10 [ 84.940386][ T5329] ? __pfx___might_resched+0x10/0x10 [ 84.940399][ T5329] ? __mark_inode_dirty+0x3d2/0xe10 [ 84.940410][ T5329] ? folio_unlock+0x101/0x160 [ 84.940426][ T5329] hfsplus_write_begin+0x66/0xb0 [ 84.940433][ T5329] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.940441][ T5329] generic_perform_write+0x2c5/0x900 [ 84.940449][ T5329] ? __pfx_generic_perform_write+0x10/0x10 [ 84.940457][ T5329] ? file_update_time+0x2da/0x490 [ 84.940468][ T5329] ? __generic_file_write_iter+0xf9/0x230 [ 84.940476][ T5329] ? generic_file_write_iter+0x103/0x550 [ 84.940486][ T5329] generic_file_write_iter+0x117/0x550 [ 84.940494][ T5329] ? __pfx_generic_file_write_iter+0x10/0x10 [ 84.940503][ T5329] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 84.940514][ T5329] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 84.940525][ T5329] ? __pfx_aa_file_perm+0x10/0x10 [ 84.940540][ T5329] ? __lock_acquire+0xab9/0xd20 [ 84.940556][ T5329] ? aio_write+0x4c4/0x7a0 [ 84.940566][ T5329] aio_write+0x535/0x7a0 [ 84.940576][ T5329] ? __pfx_aio_write+0x10/0x10 [ 84.940588][ T5329] ? __might_fault+0xb0/0x130 [ 84.940604][ T5329] io_submit_one+0x78b/0x1310 [ 84.940616][ T5329] ? __pfx_io_submit_one+0x10/0x10 [ 84.940625][ T5329] ? __might_fault+0xb0/0x130 [ 84.940639][ T5329] ? __might_fault+0xb0/0x130 [ 84.940651][ T5329] __se_sys_io_submit+0x185/0x2f0 [ 84.940665][ T5329] ? __pfx___se_sys_io_submit+0x10/0x10 [ 84.940679][ T5329] ? do_syscall_64+0xbe/0xfa0 [ 84.940691][ T5329] do_syscall_64+0xfa/0xfa0 [ 84.940703][ T5329] ? lockdep_hardirqs_on+0x9c/0x150 [ 84.940716][ T5329] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.940727][ T5329] ? clear_bhb_loop+0x60/0xb0 [ 84.940738][ T5329] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.940747][ T5329] RIP: 0033:0x7f0fa758efc9 [ 84.940758][ T5329] 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 [ 84.940766][ T5329] RSP: 002b:00007f0fa845f038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 84.940779][ T5329] RAX: ffffffffffffffda RBX: 00007f0fa77e5fa0 RCX: 00007f0fa758efc9 [ 84.940787][ T5329] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f0fa841d000 [ 84.940794][ T5329] RBP: 00007f0fa7611f91 R08: 0000000000000000 R09: 0000000000000000 [ 84.940801][ T5329] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.940807][ T5329] R13: 00007f0fa77e6038 R14: 00007f0fa77e5fa0 R15: 00007fff1f88d908 [ 84.940854][ T5329]