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$hid(0x0, 0x36, &(0x7f0000000380)=ANY=[@ANYBLOB="1201500200000040"], 0x0) truncate(&(0x7f00000013c0)='./file1\x00', 0x0) creat(&(0x7f0000000000)='./bus\x00', 0x0) r3 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./file1\x00', 0xc4042, 0x1ff) r4 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000140), 0x2000, 0x0) sendfile(r3, r4, 0x0, 0x20fffe82) getsockopt$X25_QBITINCL(r3, 0x106, 0x1, &(0x7f0000000040), &(0x7f00000000c0)=0x4) [ 75.625381][ T5338] Bluetooth: hci0: command tx timeout [ 75.707864][ T5359] loop0: detected capacity change from 0 to 2048 [ 75.732623][ T5359] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 75.744535][ T5359] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 75.762126][ T5359] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 75.767904][ T5359] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 75.783267][ T25] audit: type=1800 audit(1757358777.830:2): pid=5359 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 [ 76.152118][ T5357] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 76.344122][ T25] audit: type=1800 audit(1757358778.390:3): pid=5359 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 [ 76.464775][ T1314] ieee802154 phy0 wpan0: encryption failed: -22 [ 76.469779][ T1314] ieee802154 phy1 wpan1: encryption failed: -22 [ 76.475646][ T5359] [ 76.476710][ T5359] ============================================ [ 76.479284][ T5359] WARNING: possible recursive locking detected [ 76.481889][ T5359] syzkaller #0 Not tainted [ 76.483682][ T5359] -------------------------------------------- [ 76.486223][ T5359] syz.0.0/5359 is trying to acquire lock: [ 76.488493][ T5359] ffff888011c96528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 76.492476][ T5359] [ 76.492476][ T5359] but task is already holding lock: [ 76.495195][ T5359] ffff888011c96528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 76.499483][ T5359] [ 76.499483][ T5359] other info that might help us debug this: [ 76.502684][ T5359] Possible unsafe locking scenario: [ 76.502684][ T5359] [ 76.505561][ T5359] CPU0 [ 76.506896][ T5359] ---- [ 76.508333][ T5359] lock(&sbi->s_alloc_mutex); [ 76.510242][ T5359] lock(&sbi->s_alloc_mutex); [ 76.512221][ T5359] [ 76.512221][ T5359] *** DEADLOCK *** [ 76.512221][ T5359] [ 76.515574][ T5359] May be due to missing lock nesting notation [ 76.515574][ T5359] [ 76.518964][ T5359] 4 locks held by syz.0.0/5359: [ 76.520922][ T5359] #0: ffff88801ea44428 (sb_writers#12){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 [ 76.524714][ T5359] #1: ffff888049d8cf60 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 76.529241][ T5359] #2: ffff888049d8cd90 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x283/0x45f0 [ 76.532922][ T5359] #3: ffff888011c96528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 76.536743][ T5359] [ 76.536743][ T5359] stack backtrace: [ 76.538949][ T5359] CPU: 0 UID: 0 PID: 5359 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 76.538963][ T5359] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 76.538970][ T5359] Call Trace: [ 76.538978][ T5359] [ 76.538983][ T5359] dump_stack_lvl+0x189/0x250 [ 76.539000][ T5359] ? __pfx_dump_stack_lvl+0x10/0x10 [ 76.539009][ T5359] ? __pfx__printk+0x10/0x10 [ 76.539020][ T5359] ? print_lock_name+0xde/0x100 [ 76.539030][ T5359] print_deadlock_bug+0x28b/0x2a0 [ 76.539040][ T5359] validate_chain+0x1a3f/0x2140 [ 76.539047][ T5359] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 76.539096][ T5359] ? lockdep_hardirqs_on+0x9c/0x150 [ 76.539109][ T5359] ? css_rstat_updated+0x23a/0x4f0 [ 76.539121][ T5359] __lock_acquire+0xab9/0xd20 [ 76.539136][ T5359] ? udf_free_blocks+0x9e2/0x17f0 [ 76.539149][ T5359] lock_acquire+0x120/0x360 [ 76.539162][ T5359] ? udf_free_blocks+0x9e2/0x17f0 [ 76.539177][ T5359] ? update_load_avg+0x572/0x1880 [ 76.539188][ T5359] __mutex_lock+0x187/0x1350 [ 76.539198][ T5359] ? udf_free_blocks+0x9e2/0x17f0 [ 76.539212][ T5359] ? folio_mark_accessed+0x42c/0x8b0 [ 76.539229][ T5359] ? __pfx_folio_mark_accessed+0x10/0x10 [ 76.539242][ T5359] ? irqentry_exit+0x74/0x90 [ 76.539248][ T5359] ? udf_free_blocks+0x9e2/0x17f0 [ 76.539259][ T5359] ? __pfx___mutex_lock+0x10/0x10 [ 76.539266][ T5359] ? __pfx___might_resched+0x10/0x10 [ 76.539272][ T5359] ? fs_reclaim_acquire+0x7d/0x100 [ 76.539281][ T5359] udf_free_blocks+0x9e2/0x17f0 [ 76.539292][ T5359] ? udf_get_fileshortad+0x6e/0x1b0 [ 76.539301][ T5359] ? __pfx_udf_free_blocks+0x10/0x10 [ 76.539313][ T5359] udf_delete_aext+0x4df/0xbc0 [ 76.539320][ T5359] ? udf_get_fileshortad+0xcb/0x1b0 [ 76.539330][ T5359] ? __pfx_udf_delete_aext+0x10/0x10 [ 76.539339][ T5359] udf_prealloc_blocks+0xb7e/0x10b0 [ 76.539349][ T5359] ? udf_get_filelongad+0x6e/0x1b0 [ 76.539358][ T5359] ? udf_current_aext+0x660/0xad0 [ 76.539365][ T5359] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 76.539377][ T5359] udf_map_block+0x1f70/0x45f0 [ 76.539387][ T5359] ? __pfx_udf_map_block+0x10/0x10 [ 76.539393][ T5359] ? pfn_valid+0x125/0x4d0 [ 76.539400][ T5359] ? pfn_valid+0x440/0x4d0 [ 76.539412][ T5359] ? submit_page_section+0x5f9/0xa40 [ 76.539421][ T5359] __udf_get_block+0x52/0x250 [ 76.539427][ T5359] ? __pfx_udf_get_block+0x10/0x10 [ 76.539433][ T5359] __blockdev_direct_IO+0x16ff/0x3490 [ 76.539445][ T5359] ? __pfx___blockdev_direct_IO+0x10/0x10 [ 76.539453][ T5359] ? __pfx_invalidate_inode_pages2_range+0x10/0x10 [ 76.539461][ T5359] ? __pfx_udf_get_block+0x10/0x10 [ 76.539467][ T5359] ? filemap_write_and_wait_range+0x18a/0x320 [ 76.539476][ T5359] ? __pfx_filemap_write_and_wait_range+0x10/0x10 [ 76.539484][ T5359] ? inode_set_ctime_to_ts+0x126/0x2f0 [ 76.539496][ T5359] udf_direct_IO+0x139/0x200 [ 76.539508][ T5359] generic_file_direct_write+0x1d8/0x3e0 [ 76.539516][ T5359] ? file_update_time+0x416/0x490 [ 76.539522][ T5359] __generic_file_write_iter+0x11d/0x230 [ 76.539528][ T5359] ? udf_file_write_iter+0x1a3/0x6c0 [ 76.539534][ T5359] udf_file_write_iter+0x2d5/0x6c0 [ 76.539541][ T5359] iter_file_splice_write+0x972/0x10e0 [ 76.539554][ T5359] ? __pfx_iter_file_splice_write+0x10/0x10 [ 76.539563][ T5359] ? rcu_read_lock_any_held+0xb3/0x120 [ 76.539573][ T5359] ? __pfx_iter_file_splice_write+0x10/0x10 [ 76.539581][ T5359] direct_splice_actor+0x101/0x160 [ 76.539590][ T5359] splice_direct_to_actor+0x5a5/0xcc0 [ 76.539601][ T5359] ? __pfx_direct_splice_actor+0x10/0x10 [ 76.539609][ T5359] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 76.539619][ T5359] do_splice_direct+0x181/0x270 [ 76.539627][ T5359] ? __pfx_do_splice_direct+0x10/0x10 [ 76.539636][ T5359] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 76.539646][ T5359] ? rw_verify_area+0x255/0x4d0 [ 76.539654][ T5359] do_sendfile+0x4da/0x7e0 [ 76.539663][ T5359] ? __pfx_do_sendfile+0x10/0x10 [ 76.539671][ T5359] ? rcu_is_watching+0x15/0xb0 [ 76.539678][ T5359] ? __rseq_handle_notify_resume+0x37e/0x11f0 [ 76.539689][ T5359] __se_sys_sendfile64+0x13e/0x190 [ 76.539698][ T5359] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 76.539706][ T5359] ? rcu_is_watching+0x15/0xb0 [ 76.539713][ T5359] ? do_syscall_64+0xbe/0x3b0 [ 76.539719][ T5359] do_syscall_64+0xfa/0x3b0 [ 76.539725][ T5359] ? lockdep_hardirqs_on+0x9c/0x150 [ 76.539734][ T5359] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.539740][ T5359] ? clear_bhb_loop+0x60/0xb0 [ 76.539747][ T5359] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.539753][ T5359] RIP: 0033:0x7fccc358ebe9 [ 76.539762][ T5359] 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 [ 76.539768][ T5359] RSP: 002b:00007fccc44ba038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 76.539775][ T5359] RAX: ffffffffffffffda RBX: 00007fccc37c5fa0 RCX: 00007fccc358ebe9 [ 76.539780][ T5359] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000009 [ 76.539784][ T5359] RBP: 00007fccc3611e19 R08: 0000000000000000 R09: 0000000000000000 [ 76.539788][ T5359] R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000 [ 76.539795][ T5359] R13: 00007fccc37c6038 R14: 00007fccc37c5fa0 R15: 00007fff15802ac8 [ 76.539804][ T5359] [ 77.661530][ T5338] Bluetooth: hci0: command tx timeout [ 79.741738][ T5338] Bluetooth: hci0: command tx timeout [ 81.341258][ T5357] usb 5-1: unable to get BOS descriptor or descriptor too short [ 81.344420][ T5357] usb 5-1: no configurations [ 81.346288][ T5357] usb 5-1: can't read configurations, error -22 [ 81.471261][ T5357] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 81.601217][ T5357] usb 5-1: device descriptor read/64, error -32 [ 81.711343][ T5357] usb usb5-port1: attempt power cycle [ 81.821376][ T5338] Bluetooth: hci0: command tx timeout [ 82.052969][ T5357] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 82.071434][ T5357] usb 5-1: device descriptor read/8, error -32 [ 82.311202][ T5357] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 82.331472][ T5357] usb 5-1: device descriptor read/8, error -32 [ 82.441672][ T5357] usb usb5-port1: unable to enumerate USB device