program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = creat(&(0x7f0000000000)='./file1\x00', 0x71) io_setup(0x202, &(0x7f0000000200)=0x0) r2 = syz_open_dev$swradio(&(0x7f00000032c0), 0x0, 0x2) ioctl$VIDIOC_CREATE_BUFS(r2, 0xc100565c, &(0x7f0000000180)={0xfffff88d, 0x400, 0x4, {0xb, @raw_data="429db7ec8398c4d5e53121f9cd91a5c730001b4106227205e9e5258139f780f27a551f10a18edd86307436df398ea49c264b7457ec61e719fb6183c754739bbab64116eef954a462199fc99808eb0d44e717a6df5aa7d82e0993031cb40718f25f024cd20388104a2fb599436d80bc6592301c487eef88570cd46487c1b86ee3d79f2b5f4c2b66ec36241d814c1a18fc295e3d60fd3b9cbc61f3ec2cbed0fb9a68c23bae1a4740ffec47ce3241db4114abdf02b8f4d5a1914f1cb1174aa03560d21ee0ba63d5e875"}, 0x7}) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 84.564020][ T4671] Bluetooth: hci0: command tx timeout [ 84.678941][ T5327] loop0: detected capacity change from 0 to 1024 [ 84.837108][ T5327] [ 84.838163][ T5327] ============================================ [ 84.840583][ T5327] WARNING: possible recursive locking detected [ 84.843486][ T5327] syzkaller #0 Not tainted [ 84.845915][ T5327] -------------------------------------------- [ 84.849705][ T5327] syz.0.0/5327 is trying to acquire lock: [ 84.853148][ T5327] ffff888042e28e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.859603][ T5327] [ 84.859603][ T5327] but task is already holding lock: [ 84.863398][ T5327] ffff888042f2a2c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.868872][ T5327] [ 84.868872][ T5327] other info that might help us debug this: [ 84.872133][ T5327] Possible unsafe locking scenario: [ 84.872133][ T5327] [ 84.875873][ T5327] CPU0 [ 84.877868][ T5327] ---- [ 84.879279][ T5327] lock(&HFSPLUS_I(inode)->extents_lock); [ 84.881807][ T5327] lock(&HFSPLUS_I(inode)->extents_lock); [ 84.884704][ T5327] [ 84.884704][ T5327] *** DEADLOCK *** [ 84.884704][ T5327] [ 84.888183][ T5327] May be due to missing lock nesting notation [ 84.888183][ T5327] [ 84.891495][ T5327] 3 locks held by syz.0.0/5327: [ 84.893851][ T5327] #0: ffff888042f2a4b8 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: generic_file_write_iter+0x11e/0x680 [ 84.899821][ T5327] #1: ffff888042f2a2c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.905359][ T5327] #2: ffff888042d500b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x2d0 [ 84.909886][ T5327] [ 84.909886][ T5327] stack backtrace: [ 84.912649][ T5327] CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 84.912673][ T5327] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 84.912683][ T5327] Call Trace: [ 84.912696][ T5327] [ 84.912705][ T5327] dump_stack_lvl+0xe8/0x150 [ 84.912735][ T5327] print_deadlock_bug+0x279/0x290 [ 84.912757][ T5327] __lock_acquire+0x253f/0x2cf0 [ 84.912774][ T5327] ? unwind_next_frame+0xa5/0x23c0 [ 84.912791][ T5327] ? __bfs+0x153/0x290 [ 84.912804][ T5327] ? __pfx_hlock_conflict+0x10/0x10 [ 84.912822][ T5327] lock_acquire+0xf0/0x2e0 [ 84.912835][ T5327] ? hfsplus_file_extend+0x215/0x1d70 [ 84.912856][ T5327] __mutex_lock+0x19f/0x1300 [ 84.913054][ T5327] ? hfsplus_file_extend+0x215/0x1d70 [ 84.913074][ T5327] ? __bfs+0x153/0x290 [ 84.913088][ T5327] ? hfsplus_file_extend+0x215/0x1d70 [ 84.913104][ T5327] ? __pfx___mutex_lock+0x10/0x10 [ 84.913115][ T5327] ? lockdep_unlock+0x5d/0xd0 [ 84.913127][ T5327] ? __lock_acquire+0x146e/0x2cf0 [ 84.913141][ T5327] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 84.913158][ T5327] hfsplus_file_extend+0x215/0x1d70 [ 84.913178][ T5327] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 84.913194][ T5327] ? __pfx___mutex_trylock_common+0x10/0x10 [ 84.913208][ T5327] ? rcu_is_watching+0x15/0xb0 [ 84.913218][ T5327] ? trace_contention_end+0x3d/0x150 [ 84.913230][ T5327] ? __asan_memset+0x22/0x50 [ 84.913240][ T5327] ? hfsplus_brec_find+0x19d/0x520 [ 84.913250][ T5327] hfsplus_bmap_reserve+0x125/0x510 [ 84.913264][ T5327] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 84.913274][ T5327] __hfsplus_ext_cache_extent+0x89/0xe30 [ 84.913291][ T5327] hfsplus_file_extend+0x4af/0x1d70 [ 84.913309][ T5327] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 84.913324][ T5327] ? clean_bdev_aliases+0x62e/0x750 [ 84.913339][ T5327] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 84.913351][ T5327] hfsplus_get_block+0x42c/0x1670 [ 84.913370][ T5327] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.913385][ T5327] ? do_raw_spin_unlock+0x4d/0x210 [ 84.913393][ T5327] ? _raw_spin_unlock+0x28/0x50 [ 84.913404][ T5327] __block_write_begin_int+0x6c6/0x1910 [ 84.913415][ T5327] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.913431][ T5327] ? __pfx___block_write_begin_int+0x10/0x10 [ 84.913439][ T5327] cont_write_begin+0x737/0xae0 [ 84.913447][ T5327] ? irqentry_exit+0x59e/0x620 [ 84.913456][ T5327] ? __pfx_cont_write_begin+0x10/0x10 [ 84.913465][ T5327] hfsplus_write_begin+0x66/0xb0 [ 84.913476][ T5327] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.913494][ T5327] generic_perform_write+0x2e2/0x8f0 [ 84.913507][ T5327] ? __pfx_generic_perform_write+0x10/0x10 [ 84.913520][ T5327] ? file_update_time_flags+0x219/0x4a0 [ 84.913536][ T5327] ? __generic_file_write_iter+0xf9/0x230 [ 84.913547][ T5327] ? generic_file_write_iter+0x136/0x680 [ 84.913559][ T5327] generic_file_write_iter+0x14a/0x680 [ 84.913572][ T5327] ? __pfx_generic_file_write_iter+0x10/0x10 [ 84.913585][ T5327] ? do_raw_spin_lock+0x12b/0x2f0 [ 84.913596][ T5327] ? __lock_acquire+0x6b5/0x2cf0 [ 84.913608][ T5327] ? lockdep_hardirqs_on+0x7a/0x110 [ 84.913620][ T5327] ? kasan_save_track+0x4f/0x80 [ 84.913638][ T5327] ? aio_write+0x547/0x870 [ 84.913650][ T5327] aio_write+0x5cd/0x870 [ 84.913661][ T5327] ? __pfx_aio_write+0x10/0x10 [ 84.913677][ T5327] io_submit_one+0x7bb/0x14c0 [ 84.913687][ T5327] ? irqentry_exit+0x59e/0x620 [ 84.913698][ T5327] ? trace_irq_disable+0x3b/0x150 [ 84.913717][ T5327] ? __pfx_io_submit_one+0x10/0x10 [ 84.913728][ T5327] ? __might_fault+0xaf/0x130 [ 84.913745][ T5327] __se_sys_io_submit+0x195/0x340 [ 84.913761][ T5327] ? __pfx___se_sys_io_submit+0x10/0x10 [ 84.913780][ T5327] do_syscall_64+0x14d/0xf80 [ 84.913792][ T5327] ? trace_irq_disable+0x3b/0x150 [ 84.913807][ T5327] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.913819][ T5327] ? clear_bhb_loop+0x40/0x90 [ 84.913831][ T5327] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.913843][ T5327] RIP: 0033:0x7f4deb39c799 [ 84.913860][ T5327] 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 [ 84.913870][ T5327] RSP: 002b:00007f4dec248fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 84.913917][ T5327] RAX: ffffffffffffffda RBX: 00007f4deb615fa0 RCX: 00007f4deb39c799 [ 84.913928][ T5327] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f4dec1ff000 [ 84.913936][ T5327] RBP: 00007f4deb432c99 R08: 0000000000000000 R09: 0000000000000000 [ 84.913944][ T5327] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.913954][ T5327] R13: 00007f4deb616038 R14: 00007f4deb615fa0 R15: 00007fff69c791c8 [ 84.913967][ T5327]