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) r3 = socket(0x11, 0x3, 0x0) setsockopt$packet_fanout(r3, 0x107, 0x12, &(0x7f0000000580), 0x4) syz_usb_connect$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) truncate(&(0x7f00000013c0)='./file1\x00', 0x0) symlink(&(0x7f0000000080)='.\x00', &(0x7f0000000000)='./file0\x00') [ 75.206541][ T5335] Bluetooth: hci0: command tx timeout [ 75.405094][ T5355] loop0: detected capacity change from 0 to 2048 [ 75.439507][ T5355] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 75.526096][ T5355] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 75.583025][ T5355] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 75.613448][ T5355] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 75.657244][ T25] audit: type=1800 audit(1754157026.029:2): pid=5355 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 [ 76.086760][ T10] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 76.399122][ T1315] ieee802154 phy0 wpan0: encryption failed: -22 [ 76.404353][ T1315] ieee802154 phy1 wpan1: encryption failed: -22 [ 76.748059][ T5356] [ 76.749382][ T5356] ============================================ [ 76.762730][ T5356] WARNING: possible recursive locking detected [ 76.765749][ T5356] 6.16.0-syzkaller-11129-geacf91b0c78a #0 Not tainted [ 76.769127][ T5356] -------------------------------------------- [ 76.782886][ T5356] syz.0.0/5356 is trying to acquire lock: [ 76.785824][ T5356] ffff88804053a928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 76.803853][ T5356] [ 76.803853][ T5356] but task is already holding lock: [ 76.810369][ T5356] ffff88804053a928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 76.816640][ T5356] [ 76.816640][ T5356] other info that might help us debug this: [ 76.831831][ T5356] Possible unsafe locking scenario: [ 76.831831][ T5356] [ 76.843182][ T5356] CPU0 [ 76.851859][ T5356] ---- [ 76.854458][ T5356] lock(&sbi->s_alloc_mutex); [ 76.856988][ T5356] lock(&sbi->s_alloc_mutex); [ 76.862648][ T5356] [ 76.862648][ T5356] *** DEADLOCK *** [ 76.862648][ T5356] [ 76.870534][ T5356] May be due to missing lock nesting notation [ 76.870534][ T5356] [ 76.887656][ T5356] 4 locks held by syz.0.0/5356: [ 76.901296][ T5356] #0: ffff88803710e428 (sb_writers#12){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 [ 76.907039][ T5356] #1: ffff8880521055c0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 76.921411][ T5356] #2: ffff8880521053f0 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x283/0x45f0 [ 76.926144][ T5356] #3: ffff88804053a928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 76.941773][ T5356] [ 76.941773][ T5356] stack backtrace: [ 76.945427][ T5356] CPU: 0 UID: 0 PID: 5356 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-11129-geacf91b0c78a #0 PREEMPT(full) [ 76.945448][ T5356] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 76.945457][ T5356] Call Trace: [ 76.945467][ T5356] [ 76.945474][ T5356] dump_stack_lvl+0x189/0x250 [ 76.945495][ T5356] ? __pfx_dump_stack_lvl+0x10/0x10 [ 76.945511][ T5356] ? __pfx__printk+0x10/0x10 [ 76.945529][ T5356] ? print_lock_name+0xde/0x100 [ 76.945544][ T5356] print_deadlock_bug+0x28b/0x2a0 [ 76.945558][ T5356] validate_chain+0x1a3f/0x2140 [ 76.945572][ T5356] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 76.946734][ T5356] ? lockdep_hardirqs_on+0x9c/0x150 [ 76.946756][ T5356] __lock_acquire+0xab9/0xd20 [ 76.946778][ T5356] ? udf_free_blocks+0x9e2/0x17f0 [ 76.946796][ T5356] lock_acquire+0x120/0x360 [ 76.946809][ T5356] ? udf_free_blocks+0x9e2/0x17f0 [ 76.946828][ T5356] __mutex_lock+0x187/0x1360 [ 76.946840][ T5356] ? udf_free_blocks+0x9e2/0x17f0 [ 76.946853][ T5356] ? folio_mark_accessed+0x3d8/0x8b0 [ 76.946868][ T5356] ? __pfx_folio_mark_accessed+0x10/0x10 [ 76.946885][ T5356] ? udf_free_blocks+0x9e2/0x17f0 [ 76.946901][ T5356] ? __pfx___mutex_lock+0x10/0x10 [ 76.946913][ T5356] ? __pfx___might_resched+0x10/0x10 [ 76.946923][ T5356] ? fs_reclaim_acquire+0x7d/0x100 [ 76.946940][ T5356] udf_free_blocks+0x9e2/0x17f0 [ 76.946955][ T5356] ? udf_get_fileshortad+0x6e/0x1b0 [ 76.946969][ T5356] ? __pfx_udf_free_blocks+0x10/0x10 [ 76.946989][ T5356] udf_delete_aext+0x4df/0xbc0 [ 76.947006][ T5356] ? udf_get_fileshortad+0xcb/0x1b0 [ 76.947020][ T5356] ? __pfx_udf_delete_aext+0x10/0x10 [ 76.947038][ T5356] udf_prealloc_blocks+0xb7e/0x10b0 [ 76.947054][ T5356] ? udf_get_filelongad+0x6e/0x1b0 [ 76.947069][ T5356] ? __pfx_udf_new_block+0x10/0x10 [ 76.947080][ T5356] ? udf_current_aext+0x660/0xad0 [ 76.947099][ T5356] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 76.947116][ T5356] ? udf_map_block+0x1662/0x45f0 [ 76.947132][ T5356] udf_map_block+0x1f70/0x45f0 [ 76.947152][ T5356] ? __pfx_udf_map_block+0x10/0x10 [ 76.947178][ T5356] __udf_get_block+0x52/0x250 [ 76.947192][ T5356] __block_write_begin_int+0x6b2/0x1900 [ 76.947212][ T5356] ? folio_add_lru+0x1b2/0x3d0 [ 76.947230][ T5356] ? __pfx_udf_get_block+0x10/0x10 [ 76.947247][ T5356] ? __pfx___block_write_begin_int+0x10/0x10 [ 76.947266][ T5356] ? __pfx_udf_get_block+0x10/0x10 [ 76.947282][ T5356] block_write_begin+0x8a/0x120 [ 76.947297][ T5356] ? udf_write_begin+0x92/0x270 [ 76.947311][ T5356] udf_write_begin+0x115/0x270 [ 76.947327][ T5356] generic_perform_write+0x2c2/0x900 [ 76.947339][ T5356] ? __pfx_generic_perform_write+0x10/0x10 [ 76.947359][ T5356] ? file_update_time+0x416/0x490 [ 76.947377][ T5356] ? __generic_file_write_iter+0xf9/0x230 [ 76.947387][ T5356] ? udf_file_write_iter+0x1a3/0x6c0 [ 76.947401][ T5356] udf_file_write_iter+0x2d5/0x6c0 [ 76.947417][ T5356] iter_file_splice_write+0x93a/0x1000 [ 76.947436][ T5356] ? __pfx_iter_file_splice_write+0x10/0x10 [ 76.947448][ T5356] ? rcu_read_lock_any_held+0xb3/0x120 [ 76.947462][ T5356] ? direct_splice_actor+0x10c/0x160 [ 76.947477][ T5356] ? __pfx_iter_file_splice_write+0x10/0x10 [ 76.947493][ T5356] direct_splice_actor+0x101/0x160 [ 76.947507][ T5356] splice_direct_to_actor+0x5a5/0xcc0 [ 76.947526][ T5356] ? __pfx_direct_splice_actor+0x10/0x10 [ 76.947539][ T5356] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 76.947552][ T5356] ? __pfx_aa_file_perm+0x10/0x10 [ 76.947566][ T5356] do_splice_direct+0x181/0x270 [ 76.947591][ T5356] ? __pfx_do_splice_direct+0x10/0x10 [ 76.947605][ T5356] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 76.947622][ T5356] ? rw_verify_area+0x255/0x4d0 [ 76.947636][ T5356] do_sendfile+0x4da/0x7e0 [ 76.947653][ T5356] ? __pfx_do_sendfile+0x10/0x10 [ 76.947668][ T5356] ? rcu_is_watching+0x15/0xb0 [ 76.947679][ T5356] ? __rseq_handle_notify_resume+0x37e/0x11f0 [ 76.947696][ T5356] __se_sys_sendfile64+0x13e/0x190 [ 76.947712][ T5356] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 76.947726][ T5356] ? rcu_is_watching+0x15/0xb0 [ 76.947736][ T5356] ? do_syscall_64+0xbe/0x3b0 [ 76.947748][ T5356] do_syscall_64+0xfa/0x3b0 [ 76.947760][ T5356] ? lockdep_hardirqs_on+0x9c/0x150 [ 76.947777][ T5356] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.947789][ T5356] ? clear_bhb_loop+0x60/0xb0 [ 76.947804][ T5356] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.947815][ T5356] RIP: 0033:0x7fd90498eb69 [ 76.947828][ T5356] 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 [ 76.947837][ T5356] RSP: 002b:00007fd905772038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 76.947852][ T5356] RAX: ffffffffffffffda RBX: 00007fd904bb6080 RCX: 00007fd90498eb69 [ 76.947860][ T5356] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005 [ 76.947867][ T5356] RBP: 00007fd904a11df1 R08: 0000000000000000 R09: 0000000000000000 [ 76.947875][ T5356] R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000 [ 76.947882][ T5356] R13: 0000000000000000 R14: 00007fd904bb6080 R15: 00007fff6c0a40e8 [ 76.947895][ T5356] [ 77.524798][ T5335] Bluetooth: hci0: command tx timeout [ 79.546480][ T5335] Bluetooth: hci0: command tx timeout [ 81.306186][ T10] usb 5-1: unable to get BOS descriptor or descriptor too short [ 81.310323][ T10] usb 5-1: unable to read config index 0 descriptor/start: -32 [ 81.323031][ T10] usb 5-1: chopping to 0 config(s) [ 81.327935][ T10] usb 5-1: can't read configurations, error -32 [ 81.455891][ T10] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 81.585892][ T10] usb 5-1: device descriptor read/64, error -32 [ 81.625915][ T5335] Bluetooth: hci0: command tx timeout [ 81.696410][ T10] usb usb5-port1: attempt power cycle [ 82.035883][ T10] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 82.056306][ T10] usb 5-1: device descriptor read/8, error -32