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, &(0x7f0000000380)=ANY=[@ANYBLOB="1201500200000040"], 0x0) truncate(&(0x7f00000013c0)='./file1\x00', 0x0) r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0) pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0x8080c61) [ 76.348549][ T4669] Bluetooth: hci0: command tx timeout [ 76.457189][ T5321] loop0: detected capacity change from 0 to 2048 [ 76.482691][ T1312] ieee802154 phy0 wpan0: encryption failed: -22 [ 76.485883][ T1312] ieee802154 phy1 wpan1: encryption failed: -22 [ 76.521481][ T5321] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 76.546005][ T5321] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 76.564708][ T5321] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 76.584670][ T5321] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 76.625168][ T25] audit: type=1800 audit(1763371520.514:2): pid=5321 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 [ 76.989232][ T5299] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 77.196021][ T5321] [ 77.196996][ T5321] ============================================ [ 77.199447][ T5321] WARNING: possible recursive locking detected [ 77.202199][ T5321] syzkaller #0 Not tainted [ 77.204181][ T5321] -------------------------------------------- [ 77.206795][ T5321] syz.0.0/5321 is trying to acquire lock: [ 77.209390][ T5321] ffff888000ac8d28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 77.213626][ T5321] [ 77.213626][ T5321] but task is already holding lock: [ 77.216769][ T5321] ffff888000ac8d28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 77.221086][ T5321] [ 77.221086][ T5321] other info that might help us debug this: [ 77.224478][ T5321] Possible unsafe locking scenario: [ 77.224478][ T5321] [ 77.227637][ T5321] CPU0 [ 77.229118][ T5321] ---- [ 77.230607][ T5321] lock(&sbi->s_alloc_mutex); [ 77.232685][ T5321] lock(&sbi->s_alloc_mutex); [ 77.235006][ T5321] [ 77.235006][ T5321] *** DEADLOCK *** [ 77.235006][ T5321] [ 77.238338][ T5321] May be due to missing lock nesting notation [ 77.238338][ T5321] [ 77.241889][ T5321] 4 locks held by syz.0.0/5321: [ 77.243972][ T5321] #0: ffff88801e4a8420 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x211/0xb30 [ 77.248156][ T5321] #1: ffff88801220cf40 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 77.254298][ T5321] #2: ffff88801220cd70 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x283/0x45f0 [ 77.259510][ T5321] #3: ffff888000ac8d28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 77.264835][ T5321] [ 77.264835][ T5321] stack backtrace: [ 77.267465][ T5321] CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 77.267483][ T5321] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 77.267490][ T5321] Call Trace: [ 77.267501][ T5321] [ 77.267508][ T5321] dump_stack_lvl+0x189/0x250 [ 77.267529][ T5321] ? __pfx_dump_stack_lvl+0x10/0x10 [ 77.267543][ T5321] ? __pfx__printk+0x10/0x10 [ 77.267560][ T5321] ? print_lock_name+0xde/0x100 [ 77.267592][ T5321] print_deadlock_bug+0x28b/0x2a0 [ 77.267609][ T5321] validate_chain+0x1a3f/0x2140 [ 77.267629][ T5321] __lock_acquire+0xab9/0xd20 [ 77.267641][ T5321] ? udf_free_blocks+0x9e2/0x17f0 [ 77.267656][ T5321] lock_acquire+0x120/0x360 [ 77.267666][ T5321] ? udf_free_blocks+0x9e2/0x17f0 [ 77.267684][ T5321] __mutex_lock+0x187/0x1350 [ 77.267739][ T5321] ? udf_free_blocks+0x9e2/0x17f0 [ 77.267756][ T5321] ? folio_mark_accessed+0x42c/0x8b0 [ 77.267773][ T5321] ? __pfx_folio_mark_accessed+0x10/0x10 [ 77.267789][ T5321] ? udf_free_blocks+0x9e2/0x17f0 [ 77.267805][ T5321] ? __pfx___mutex_lock+0x10/0x10 [ 77.267823][ T5321] ? __pfx___might_resched+0x10/0x10 [ 77.267835][ T5321] ? fs_reclaim_acquire+0x7d/0x100 [ 77.267850][ T5321] udf_free_blocks+0x9e2/0x17f0 [ 77.267867][ T5321] ? udf_get_fileshortad+0x6e/0x1b0 [ 77.267884][ T5321] ? udf_current_aext+0x698/0xb00 [ 77.267895][ T5321] ? __pfx_udf_free_blocks+0x10/0x10 [ 77.267920][ T5321] udf_delete_aext+0x4df/0xbc0 [ 77.267934][ T5321] ? __pfx_udf_delete_aext+0x10/0x10 [ 77.267949][ T5321] udf_prealloc_blocks+0xb7e/0x10b0 [ 77.267971][ T5321] ? __pfx_udf_new_block+0x10/0x10 [ 77.267988][ T5321] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 77.268010][ T5321] udf_map_block+0x1f70/0x45f0 [ 77.268028][ T5321] ? __pfx_udf_map_block+0x10/0x10 [ 77.268050][ T5321] ? do_raw_spin_unlock+0x4d/0x240 [ 77.268065][ T5321] __udf_get_block+0x52/0x250 [ 77.268077][ T5321] __block_write_begin_int+0x6b5/0x1900 [ 77.268090][ T5321] ? __pfx_workingset_update_node+0x10/0x10 [ 77.268103][ T5321] ? __pfx_udf_get_block+0x10/0x10 [ 77.268113][ T5321] ? __pfx___block_write_begin_int+0x10/0x10 [ 77.268127][ T5321] ? __pfx_udf_get_block+0x10/0x10 [ 77.268136][ T5321] block_write_begin+0x8a/0x120 [ 77.268146][ T5321] ? udf_write_begin+0x92/0x270 [ 77.268156][ T5321] udf_write_begin+0x115/0x270 [ 77.268167][ T5321] generic_perform_write+0x2c5/0x900 [ 77.268180][ T5321] ? __pfx_generic_perform_write+0x10/0x10 [ 77.268190][ T5321] ? file_update_time+0x2da/0x490 [ 77.268203][ T5321] ? __generic_file_write_iter+0xf9/0x230 [ 77.268212][ T5321] ? udf_file_write_iter+0x1a3/0x6c0 [ 77.268228][ T5321] udf_file_write_iter+0x2d5/0x6c0 [ 77.268245][ T5321] vfs_write+0x5c9/0xb30 [ 77.268260][ T5321] ? __pfx_udf_file_write_iter+0x10/0x10 [ 77.268275][ T5321] ? __pfx_vfs_write+0x10/0x10 [ 77.268290][ T5321] ? __fget_files+0x2a/0x420 [ 77.268306][ T5321] __x64_sys_pwrite64+0x193/0x220 [ 77.268329][ T5321] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 77.268345][ T5321] ? do_syscall_64+0xbe/0xfa0 [ 77.268362][ T5321] do_syscall_64+0xfa/0xfa0 [ 77.268378][ T5321] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.268388][ T5321] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 77.268399][ T5321] ? clear_bhb_loop+0x60/0xb0 [ 77.268410][ T5321] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.268422][ T5321] RIP: 0033:0x7f93c0f8f6c9 [ 77.268434][ T5321] 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 [ 77.268443][ T5321] RSP: 002b:00007f93c1dfe038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 77.268457][ T5321] RAX: ffffffffffffffda RBX: 00007f93c11e5fa0 RCX: 00007f93c0f8f6c9 [ 77.268466][ T5321] RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000008 [ 77.268474][ T5321] RBP: 00007f93c1011f91 R08: 0000000000000000 R09: 0000000000000000 [ 77.268482][ T5321] R10: 0000000008080c61 R11: 0000000000000246 R12: 0000000000000000 [ 77.268491][ T5321] R13: 00007f93c11e6038 R14: 00007f93c11e5fa0 R15: 00007fff9ec8d238 [ 77.268504][ T5321] [ 78.399082][ T4669] Bluetooth: hci0: command tx timeout [ 80.479271][ T4669] Bluetooth: hci0: command tx timeout [ 82.160153][ T5299] usb 5-1: unable to get BOS descriptor or descriptor too short [ 82.163570][ T5299] usb 5-1: no configurations [ 82.165701][ T5299] usb 5-1: can't read configurations, error -22 [ 82.299137][ T5299] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 82.429152][ T5299] usb 5-1: device descriptor read/64, error -32 [ 82.539451][ T5299] usb usb5-port1: attempt power cycle [ 82.559085][ T4669] Bluetooth: hci0: command tx timeout [ 82.879310][ T5299] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 82.899785][ T5299] usb 5-1: device descriptor read/8, error -32 [ 83.139118][ T5299] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 83.159436][ T5299] usb 5-1: device descriptor read/8, error -32 [ 83.269229][ T5299] usb usb5-port1: unable to enumerate USB device