program: syz_mount_image$udf(&(0x7f0000000180), &(0x7f0000000100)='./bus\x00', 0x1014494, &(0x7f00000002c0)={[{@iocharset={'iocharset', 0x3d, 'iso8859-4'}}, {@partition={'partition', 0x3d, 0x6}}, {@gid_forget}, {@session={'session', 0x3d, 0xfe8}}, {@longad}, {@anchor}, {@uid_forget}]}, 0x1, 0xc24, &(0x7f0000001480)="$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") r0 = open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x0) ftruncate(r0, 0x2007ffc) sendfile(r0, r0, 0x0, 0x800000009) r1 = open(&(0x7f0000000000)='./bus\x00', 0x60042, 0x0) r2 = open(&(0x7f0000000080)='./bus\x00', 0x185102, 0x0) ftruncate(r2, 0x2007ffb) sendfile(r1, r2, 0x0, 0x1000000201005) syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000140)={{0x12, 0x1, 0x250, 0x0, 0x0, 0x0, 0x40, 0x6cb, 0x2968, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x2, 0x20, 0x5, [{{0x9, 0x4, 0x0, 0xfe, 0x1, 0x3, 0x1, 0x3, 0x0, {0x9, 0x21, 0x7, 0x1, 0x1, {0x22, 0x9f8}}, {{{0x9, 0x5, 0x81, 0x3, 0x40, 0x1, 0x80, 0xb5}}}}}]}}]}}, 0x0) creat(&(0x7f0000000000)='./bus\x00', 0x0) ioctl$DRM_IOCTL_MODE_GETCRTC(r2, 0xc06864a1, &(0x7f00000001c0)={&(0x7f00000000c0)=[0x0], 0x1, 0x0, 0x0}) ioctl$DRM_IOCTL_MODE_DIRTYFB(0xffffffffffffffff, 0xc01864b1, &(0x7f0000000380)={r3, 0x0, 0x5, 0x8, &(0x7f0000000280)=[{0x5, 0x1d77, 0x4, 0x2}, {0x3, 0x1, 0x7, 0x9}, {0x2, 0x5, 0x6, 0x3}, {0x8, 0x6, 0x54, 0x6}, {0x5, 0x5, 0x8, 0x5}, {0xbc7a, 0x2, 0x1c, 0x401}, {0xe, 0xc6b, 0x81}, {0xf0, 0x401, 0x1, 0x3e}]}) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cpuset.effective_cpus\x00', 0x275a, 0x0) [ 75.386456][ T4677] Bluetooth: hci0: command tx timeout [ 75.403811][ T5328] loop0: detected capacity change from 0 to 2048 [ 75.431777][ T5328] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 75.448834][ T5328] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 75.476094][ T5328] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 75.488748][ T5328] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 75.512297][ T25] audit: type=1800 audit(1749960927.929:2): pid=5328 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.0" name="file1" dev="loop0" ino=1346 res=0 errno=0 [ 75.884674][ T5322] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 76.071446][ T5328] [ 76.072499][ T5328] ============================================ [ 76.075168][ T5328] WARNING: possible recursive locking detected [ 76.077734][ T5328] 6.16.0-rc1-syzkaller-00236-g8c6bc74c7f89 #0 Not tainted [ 76.080674][ T5328] -------------------------------------------- [ 76.083133][ T5328] syz.0.0/5328 is trying to acquire lock: [ 76.085470][ T5328] ffff88803fe82128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 76.089444][ T5328] [ 76.089444][ T5328] but task is already holding lock: [ 76.092710][ T5328] ffff88803fe82128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_new_block+0xfab/0x1ba0 [ 76.097339][ T5328] [ 76.097339][ T5328] other info that might help us debug this: [ 76.100669][ T5328] Possible unsafe locking scenario: [ 76.100669][ T5328] [ 76.103519][ T5328] CPU0 [ 76.104915][ T5328] ---- [ 76.106313][ T5328] lock(&sbi->s_alloc_mutex); [ 76.108264][ T5328] lock(&sbi->s_alloc_mutex); [ 76.110573][ T5328] [ 76.110573][ T5328] *** DEADLOCK *** [ 76.110573][ T5328] [ 76.115032][ T5328] May be due to missing lock nesting notation [ 76.115032][ T5328] [ 76.119372][ T5328] 3 locks held by syz.0.0/5328: [ 76.121516][ T5328] #0: ffff888011f16428 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 76.125448][ T5328] #1: ffff888043f68900 (&type->i_mutex_dir_key#8){+.+.}-{4:4}, at: path_openat+0x8da/0x3830 [ 76.129188][ T5328] #2: ffff88803fe82128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_new_block+0xfab/0x1ba0 [ 76.133491][ T5328] [ 76.133491][ T5328] stack backtrace: [ 76.136204][ T5328] CPU: 0 UID: 0 PID: 5328 Comm: syz.0.0 Not tainted 6.16.0-rc1-syzkaller-00236-g8c6bc74c7f89 #0 PREEMPT(full) [ 76.136225][ T5328] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 76.136235][ T5328] Call Trace: [ 76.136245][ T5328] [ 76.136253][ T5328] dump_stack_lvl+0x189/0x250 [ 76.136279][ T5328] ? __pfx_dump_stack_lvl+0x10/0x10 [ 76.136301][ T5328] ? __pfx__printk+0x10/0x10 [ 76.136317][ T5328] ? print_lock_name+0xde/0x100 [ 76.136331][ T5328] print_deadlock_bug+0x28b/0x2a0 [ 76.136346][ T5328] validate_chain+0x1a3f/0x2140 [ 76.136365][ T5328] ? rcu_preempt_deferred_qs_irqrestore+0x851/0xc40 [ 76.136385][ T5328] ? __lock_acquire+0xab9/0xd20 [ 76.136407][ T5328] __lock_acquire+0xab9/0xd20 [ 76.136428][ T5328] ? udf_free_blocks+0x9e2/0x17f0 [ 76.136441][ T5328] lock_acquire+0x120/0x360 [ 76.136461][ T5328] ? udf_free_blocks+0x9e2/0x17f0 [ 76.136477][ T5328] __mutex_lock+0x182/0xe80 [ 76.136558][ T5328] ? udf_free_blocks+0x9e2/0x17f0 [ 76.136571][ T5328] ? __pfx_folio_mark_accessed+0x10/0x10 [ 76.136590][ T5328] ? __bfs+0x154/0x2a0 [ 76.136610][ T5328] ? udf_free_blocks+0x9e2/0x17f0 [ 76.136623][ T5328] ? __pfx___mutex_lock+0x10/0x10 [ 76.136638][ T5328] ? __pfx___might_resched+0x10/0x10 [ 76.136661][ T5328] udf_free_blocks+0x9e2/0x17f0 [ 76.136676][ T5328] ? bdev_getblk+0x7b/0x690 [ 76.136691][ T5328] ? udf_get_fileshortad+0x6e/0x1b0 [ 76.136713][ T5328] ? __pfx_udf_free_blocks+0x10/0x10 [ 76.136732][ T5328] udf_delete_aext+0x4df/0xbc0 [ 76.136748][ T5328] ? udf_get_fileshortad+0x6e/0x1b0 [ 76.136769][ T5328] ? __pfx_udf_delete_aext+0x10/0x10 [ 76.136787][ T5328] udf_new_block+0x1404/0x1ba0 [ 76.136805][ T5328] ? __pfx_udf_new_block+0x10/0x10 [ 76.136821][ T5328] ? rcu_is_watching+0x15/0xb0 [ 76.136841][ T5328] ? trace_kmalloc+0x1f/0xd0 [ 76.136852][ T5328] ? udf_new_inode+0x313/0xd50 [ 76.136866][ T5328] udf_new_inode+0x399/0xd50 [ 76.136881][ T5328] ? __pfx_udf_new_inode+0x10/0x10 [ 76.136893][ T5328] ? generic_permission+0x2e5/0x690 [ 76.136911][ T5328] udf_create+0x23/0xf0 [ 76.136927][ T5328] ? __pfx_udf_create+0x10/0x10 [ 76.136941][ T5328] path_openat+0x14f4/0x3830 [ 76.136959][ T5328] ? arch_stack_walk+0xfc/0x150 [ 76.136980][ T5328] ? __pfx_path_openat+0x10/0x10 [ 76.136996][ T5328] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.137015][ T5328] do_filp_open+0x1fa/0x410 [ 76.137032][ T5328] ? __lock_acquire+0xab9/0xd20 [ 76.137049][ T5328] ? __pfx_do_filp_open+0x10/0x10 [ 76.137073][ T5328] ? _raw_spin_unlock+0x28/0x50 [ 76.137089][ T5328] ? alloc_fd+0x64c/0x6c0 [ 76.137104][ T5328] do_sys_openat2+0x121/0x1c0 [ 76.137123][ T5328] ? __pfx_do_sys_openat2+0x10/0x10 [ 76.137140][ T5328] ? rcu_is_watching+0x15/0xb0 [ 76.137160][ T5328] __x64_sys_openat+0x138/0x170 [ 76.137178][ T5328] do_syscall_64+0xfa/0x3b0 [ 76.137191][ T5328] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.137203][ T5328] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 76.137216][ T5328] ? clear_bhb_loop+0x60/0xb0 [ 76.137262][ T5328] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.137276][ T5328] RIP: 0033:0x7f90cb98e929 [ 76.137289][ T5328] 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 [ 76.137302][ T5328] RSP: 002b:00007f90cc789038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 76.137318][ T5328] RAX: ffffffffffffffda RBX: 00007f90cbbb5fa0 RCX: 00007f90cb98e929 [ 76.137328][ T5328] RDX: 000000000000275a RSI: 0000200000000040 RDI: ffffffffffffff9c [ 76.137338][ T5328] RBP: 00007f90cba10b39 R08: 0000000000000000 R09: 0000000000000000 [ 76.137347][ T5328] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.137355][ T5328] R13: 0000000000000000 R14: 00007f90cbbb5fa0 R15: 00007ffe496c8218 [ 76.137370][ T5328] [ 76.317161][ T1317] ieee802154 phy0 wpan0: encryption failed: -22 [ 76.320190][ T1317] ieee802154 phy1 wpan1: encryption failed: -22 [ 77.464850][ T4677] Bluetooth: hci0: command tx timeout [ 79.544506][ T4677] Bluetooth: hci0: command tx timeout [ 81.064520][ T5322] usb 5-1: unable to get BOS descriptor or descriptor too short [ 81.070082][ T5322] usb 5-1: unable to read config index 0 descriptor/start: -32 [ 81.073281][ T5322] usb 5-1: chopping to 0 config(s) [ 81.075882][ T5322] usb 5-1: can't read configurations, error -32 [ 81.204195][ T5322] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 81.334429][ T5322] usb 5-1: device descriptor read/64, error -32 [ 81.444468][ T5322] usb usb5-port1: attempt power cycle [ 81.624242][ T4677] Bluetooth: hci0: command tx timeout [ 81.784200][ T5322] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 81.804593][ T5322] usb 5-1: device descriptor read/8, error -32 [ 82.044237][ T5322] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 82.064754][ T5322] usb 5-1: device descriptor read/8, error -32 [ 82.174606][ T5322] usb usb5-port1: unable to enumerate USB device