program: syz_mount_image$udf(&(0x7f0000000180), &(0x7f0000000100)='./bus\x00', 0x1014494, &(0x7f00000002c0)={[{@iocharset={'iocharset', 0x3d, 'iso8859-4'}}, {@partition={'partition', 0x3d, 0x6}}, {@gid_forget}, {@session={'session', 0x3d, 0xfe8}}, {@noadinicb}, {@anchor}, {@uid_forget}]}, 0xfe, 0xc24, &(0x7f0000001480)="$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") r0 = open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x0) ftruncate(r0, 0x2007ffc) sendfile(r0, r0, 0x0, 0x800000009) r1 = open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x0) r2 = open(&(0x7f0000000080)='./bus\x00', 0x107382, 0x1d0) ftruncate(r2, 0x2007ffb) sendfile(r1, r2, 0x0, 0x1000000201005) syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000140)={{0x12, 0x1, 0x250, 0x0, 0x0, 0x0, 0x40, 0x6cb, 0x2968, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x2, 0x20, 0x5, [{{0x9, 0x4, 0x0, 0xfe, 0x1, 0x3, 0x1, 0x3, 0x0, {0x9, 0x21, 0x7, 0x1, 0x1, {0x22, 0x9f8}}, {{{0x9, 0x5, 0x81, 0x3, 0x40, 0x1, 0x80, 0xb5}}}}}]}}]}}, 0x0) r3 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2) ioctl$sock_ifreq(r3, 0x8910, &(0x7f0000000000)={'vlan0\x00', @ifru_ivalue=0x8}) ioctl$sock_netdev_private(r3, 0x8914, &(0x7f0000000000)) r4 = openat$ptp0(0xffffffffffffff9c, &(0x7f0000000000), 0x1c1200, 0x0) ioctl$PTP_EXTTS_REQUEST2(r4, 0xc4c03d12, &(0x7f0000000040)={0x19, 0x1}) truncate(&(0x7f00000013c0)='./file1\x00', 0x0) symlink(&(0x7f0000000080)='.\x00', &(0x7f0000000000)='./file0\x00') [ 74.559778][ T5334] Bluetooth: hci0: command tx timeout [ 74.673523][ T5353] loop0: detected capacity change from 0 to 2048 [ 74.709788][ T5353] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 74.759753][ T5353] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 74.779178][ T5353] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 74.799051][ T5353] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 74.826783][ T26] audit: type=1800 audit(1758793282.099:2): pid=5353 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 [ 75.215203][ T5347] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 76.411535][ T1315] ieee802154 phy0 wpan0: encryption failed: -22 [ 76.416155][ T1315] ieee802154 phy1 wpan1: encryption failed: -22 [ 76.519609][ T5356] e1000e 0000:00:02.0 eth1: NIC Link is Down [ 76.653051][ T5334] Bluetooth: hci0: command tx timeout [ 77.124365][ T5354] [ 77.125390][ T5354] ============================================ [ 77.127845][ T5354] WARNING: possible recursive locking detected [ 77.130269][ T5354] syzkaller #0 Not tainted [ 77.131969][ T5354] -------------------------------------------- [ 77.134438][ T5354] syz.0.0/5354 is trying to acquire lock: [ 77.136695][ T5354] ffff88804015e928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 77.153977][ T5354] [ 77.153977][ T5354] but task is already holding lock: [ 77.157799][ T5354] ffff88804015e928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_new_block+0xfab/0x1ba0 [ 77.175030][ T5354] [ 77.175030][ T5354] other info that might help us debug this: [ 77.178671][ T5354] Possible unsafe locking scenario: [ 77.178671][ T5354] [ 77.181991][ T5354] CPU0 [ 77.183590][ T5354] ---- [ 77.185199][ T5354] lock(&sbi->s_alloc_mutex); [ 77.202610][ T5354] lock(&sbi->s_alloc_mutex); [ 77.204718][ T5354] [ 77.204718][ T5354] *** DEADLOCK *** [ 77.204718][ T5354] [ 77.208484][ T5354] May be due to missing lock nesting notation [ 77.208484][ T5354] [ 77.212130][ T5354] 4 locks held by syz.0.0/5354: [ 77.214237][ T5354] #0: ffff888033f98428 (sb_writers#12){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 [ 77.231084][ T5354] #1: ffff88805212d5c0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 77.235943][ T5354] #2: ffff88805212d3f0 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x283/0x45f0 [ 77.240187][ T5354] #3: ffff88804015e928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_new_block+0xfab/0x1ba0 [ 77.260267][ T5354] [ 77.260267][ T5354] stack backtrace: [ 77.263261][ T5354] CPU: 0 UID: 0 PID: 5354 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 77.263278][ T5354] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 77.263285][ T5354] Call Trace: [ 77.263292][ T5354] [ 77.263298][ T5354] dump_stack_lvl+0x189/0x250 [ 77.263318][ T5354] ? __pfx_dump_stack_lvl+0x10/0x10 [ 77.263331][ T5354] ? __pfx__printk+0x10/0x10 [ 77.263344][ T5354] ? print_lock_name+0xde/0x100 [ 77.263357][ T5354] print_deadlock_bug+0x28b/0x2a0 [ 77.263367][ T5354] validate_chain+0x1a3f/0x2140 [ 77.263377][ T5354] ? try_to_wake_up+0x7f5/0x12b0 [ 77.263393][ T5354] __lock_acquire+0xab9/0xd20 [ 77.263414][ T5354] ? udf_free_blocks+0x9e2/0x17f0 [ 77.263429][ T5354] lock_acquire+0x120/0x360 [ 77.263442][ T5354] ? udf_free_blocks+0x9e2/0x17f0 [ 77.263458][ T5354] __mutex_lock+0x187/0x1350 [ 77.267178][ T5354] ? udf_free_blocks+0x9e2/0x17f0 [ 77.267197][ T5354] ? folio_mark_accessed+0x42c/0x8b0 [ 77.267217][ T5354] ? __pfx_folio_mark_accessed+0x10/0x10 [ 77.267237][ T5354] ? udf_free_blocks+0x9e2/0x17f0 [ 77.267254][ T5354] ? __pfx___mutex_lock+0x10/0x10 [ 77.267267][ T5354] ? __pfx___might_resched+0x10/0x10 [ 77.267278][ T5354] ? fs_reclaim_acquire+0x7d/0x100 [ 77.267295][ T5354] udf_free_blocks+0x9e2/0x17f0 [ 77.267313][ T5354] ? udf_get_fileshortad+0x6e/0x1b0 [ 77.267330][ T5354] ? __pfx_udf_free_blocks+0x10/0x10 [ 77.267352][ T5354] udf_delete_aext+0x4df/0xbc0 [ 77.267366][ T5354] ? udf_get_fileshortad+0x6e/0x1b0 [ 77.267382][ T5354] ? __pfx_udf_delete_aext+0x10/0x10 [ 77.267398][ T5354] udf_new_block+0x1404/0x1ba0 [ 77.267419][ T5354] ? fs_reclaim_acquire+0x7d/0x100 [ 77.267436][ T5354] ? bdev_getblk+0x80/0x660 [ 77.267453][ T5354] ? udf_get_filelongad+0x6e/0x1b0 [ 77.267469][ T5354] ? __pfx_udf_new_block+0x10/0x10 [ 77.267487][ T5354] ? udf_current_aext+0x660/0xad0 [ 77.267504][ T5354] udf_map_block+0x13a8/0x45f0 [ 77.267522][ T5354] ? __pfx_udf_map_block+0x10/0x10 [ 77.267544][ T5354] ? do_raw_spin_unlock+0x4d/0x240 [ 77.267558][ T5354] __udf_get_block+0x52/0x250 [ 77.267571][ T5354] __block_write_begin_int+0x6b5/0x1900 [ 77.267583][ T5354] ? folio_add_lru+0x1b2/0x3d0 [ 77.267597][ T5354] ? __pfx_udf_get_block+0x10/0x10 [ 77.267607][ T5354] ? __pfx___block_write_begin_int+0x10/0x10 [ 77.267618][ T5354] ? __pfx_udf_get_block+0x10/0x10 [ 77.267628][ T5354] block_write_begin+0x8a/0x120 [ 77.267637][ T5354] ? udf_write_begin+0x92/0x270 [ 77.267647][ T5354] udf_write_begin+0x115/0x270 [ 77.267658][ T5354] generic_perform_write+0x2c5/0x900 [ 77.267673][ T5354] ? __pfx_generic_perform_write+0x10/0x10 [ 77.267683][ T5354] ? file_update_time+0x416/0x490 [ 77.267694][ T5354] ? __generic_file_write_iter+0xf9/0x230 [ 77.267704][ T5354] ? udf_file_write_iter+0x1a3/0x6c0 [ 77.267714][ T5354] udf_file_write_iter+0x2d5/0x6c0 [ 77.267724][ T5354] iter_file_splice_write+0x972/0x10e0 [ 77.267743][ T5354] ? __pfx_iter_file_splice_write+0x10/0x10 [ 77.267757][ T5354] ? rcu_read_lock_any_held+0xb3/0x120 [ 77.267770][ T5354] ? direct_splice_actor+0x10c/0x160 [ 77.267784][ T5354] ? __pfx_iter_file_splice_write+0x10/0x10 [ 77.267797][ T5354] direct_splice_actor+0xfe/0x160 [ 77.267809][ T5354] splice_direct_to_actor+0x5a8/0xcc0 [ 77.267828][ T5354] ? __pfx_direct_splice_actor+0x10/0x10 [ 77.267843][ T5354] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 77.267858][ T5354] do_splice_direct+0x181/0x270 [ 77.267873][ T5354] ? __pfx_do_splice_direct+0x10/0x10 [ 77.267886][ T5354] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 77.267902][ T5354] ? rw_verify_area+0x255/0x4d0 [ 77.267918][ T5354] do_sendfile+0x4da/0x7e0 [ 77.267935][ T5354] ? __pfx_do_sendfile+0x10/0x10 [ 77.267950][ T5354] ? rcu_is_watching+0x15/0xb0 [ 77.267961][ T5354] ? __rseq_handle_notify_resume+0x37e/0x11f0 [ 77.267980][ T5354] __se_sys_sendfile64+0x13e/0x190 [ 77.267996][ T5354] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 77.268012][ T5354] ? rcu_is_watching+0x15/0xb0 [ 77.268024][ T5354] ? do_syscall_64+0xbe/0x3b0 [ 77.268037][ T5354] do_syscall_64+0xfa/0x3b0 [ 77.268049][ T5354] ? lockdep_hardirqs_on+0x9c/0x150 [ 77.268061][ T5354] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.268071][ T5354] ? clear_bhb_loop+0x60/0xb0 [ 77.268082][ T5354] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.268095][ T5354] RIP: 0033:0x7f6cb758eec9 [ 77.268107][ T5354] 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 [ 77.268116][ T5354] RSP: 002b:00007f6cb84d4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 77.268131][ T5354] RAX: ffffffffffffffda RBX: 00007f6cb77e6090 RCX: 00007f6cb758eec9 [ 77.268140][ T5354] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005 [ 77.268146][ T5354] RBP: 00007f6cb7611f91 R08: 0000000000000000 R09: 0000000000000000 [ 77.268152][ T5354] R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000 [ 77.268158][ T5354] R13: 00007f6cb77e6128 R14: 00007f6cb77e6090 R15: 00007ffd943143f8 [ 77.268168][ T5354] [ 78.735345][ T5334] Bluetooth: hci0: command tx timeout [ 80.475474][ T5347] usb 5-1: unable to get BOS descriptor or descriptor too short [ 80.480222][ T5347] usb 5-1: unable to read config index 0 descriptor/start: -32 [ 80.483567][ T5347] usb 5-1: chopping to 0 config(s) [ 80.486311][ T5347] usb 5-1: can't read configurations, error -32 [ 80.625204][ T5347] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 80.755180][ T5347] usb 5-1: device descriptor read/64, error -32 [ 80.795561][ T5334] Bluetooth: hci0: command tx timeout [ 80.865306][ T5347] usb usb5-port1: attempt power cycle [ 81.205147][ T5347] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 81.225534][ T5347] usb 5-1: device descriptor read/8, error -32 [ 81.465181][ T5347] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 81.485437][ T5347] usb 5-1: device descriptor read/8, error -32