program: syz_mount_image$udf(&(0x7f0000000180), &(0x7f0000000100)='./bus\x00', 0x1014494, &(0x7f0000000380)=ANY=[@ANYBLOB="696f636861727365743d69736f383835392d342c706172746974696f6e3d30303030303030303030303030303030303030362c6769643d666f726765742c73657373696f6e3d30303030303030303030303030303030343037322c6e6f6164696e6963622c616e63686f723d30303030303030303030303030303030303030302c7569643d666f726765742c00f0b086952049322117fe4705de0db0faca710a1dcc70eb11d52637aabec71a5b5eb42a5d9aa223c5fc6278bb6117ebdd8b5e570bdb4e196018a3c040e1a4a19199d15677f46454eb41e346d3086dd50e3d49bc9269fb7a047e9abc87dd073fed4629c0009fcc71d55f77d4469f561a2526aee3126c4b20f2cabb3dd1232c68029a26dca8c690e5a05c8c8f1fe8786c7aa44a0d174fefdb3836fb4154a93780d68e54a4dbfec5e1108a56e0a009e38e1bb0314479be1bc95889c4c9a74fcc"], 0xfe, 0xc24, &(0x7f0000001480)="$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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(0x2, 0x36, &(0x7f0000000040)={{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) [ 72.1107[ 68.631827][ T5340] Bluetooth: hci0: command tx timeout [ 68.738903][ T5359] loop0: detected capacity change from 0 to 2048 [ 68.809357][ T5359] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 68.950030][ T5359] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 68.956350][ T5359] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 69.002996][ T5359] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 69.038332][ T25] audit: type=1800 audit(1758186094.462:2): 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 [ 69.548844][ T55] usb 5-1: new full-speed USB device number 2 using dummy_hcd [ 70.167253][ T5359] [ 70.168539][ T5359] ============================================ [ 70.171806][ T5359] WARNING: possible recursive locking detected [ 70.190408][ T5359] syzkaller #0 Not tainted [ 70.192808][ T5359] -------------------------------------------- [ 70.196288][ T5359] syz.0.0/5359 is trying to acquire lock: [ 70.198852][ T5359] ffff8880114aa928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 70.211893][ T5359] [ 70.211893][ T5359] but task is already holding lock: [ 70.229101][ T5359] ffff8880114aa928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 70.236566][ T5359] [ 70.236566][ T5359] other info that might help us debug this: [ 70.246207][ T5359] Possible unsafe locking scenario: [ 70.246207][ T5359] [ 70.260180][ T5359] CPU0 [ 70.261753][ T5359] ---- [ 70.263723][ T5359] lock(&sbi->s_alloc_mutex); [ 70.268931][ T5359] lock(&sbi->s_alloc_mutex); [ 70.272386][ T5359] [ 70.272386][ T5359] *** DEADLOCK *** [ 70.272386][ T5359] [ 70.292002][ T5359] May be due to missing lock nesting notation [ 70.292002][ T5359] [ 70.295469][ T5359] 4 locks held by syz.0.0/5359: [ 70.297374][ T5359] #0: ffff88801c34a428 (sb_writers#12){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 [ 70.302610][ T5359] #1: ffff8880528d95c0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 70.323855][ T5359] #2: ffff8880528d93f0 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x283/0x45f0 [ 70.329798][ T5359] #3: ffff8880114aa928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 70.333972][ T5359] [ 70.333972][ T5359] stack backtrace: [ 70.338615][ T5359] CPU: 0 UID: 0 PID: 5359 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 70.338855][ T5359] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 70.338875][ T5359] Call Trace: [ 70.338963][ T5359] [ 70.339094][ T5359] dump_stack_lvl+0x189/0x250 [ 70.339554][ T5359] ? __pfx_dump_stack_lvl+0x10/0x10 [ 70.339641][ T5359] ? __pfx__printk+0x10/0x10 [ 70.339667][ T5359] ? print_lock_name+0xde/0x100 [ 70.339690][ T5359] print_deadlock_bug+0x28b/0x2a0 [ 70.339711][ T5359] validate_chain+0x1a3f/0x2140 [ 70.339735][ T5359] __lock_acquire+0xab9/0xd20 [ 70.339760][ T5359] ? udf_free_blocks+0x9e2/0x17f0 [ 70.339782][ T5359] lock_acquire+0x120/0x360 [ 70.339804][ T5359] ? udf_free_blocks+0x9e2/0x17f0 [ 70.339832][ T5359] __mutex_lock+0x187/0x1350 [ 70.339917][ T5359] ? udf_free_blocks+0x9e2/0x17f0 [ 70.339938][ T5359] ? folio_mark_accessed+0x42c/0x8b0 [ 70.339959][ T5359] ? __pfx_folio_mark_accessed+0x10/0x10 [ 70.339983][ T5359] ? udf_free_blocks+0x9e2/0x17f0 [ 70.340006][ T5359] ? __pfx___mutex_lock+0x10/0x10 [ 70.340025][ T5359] ? __pfx___might_resched+0x10/0x10 [ 70.340040][ T5359] ? fs_reclaim_acquire+0x7d/0x100 [ 70.340062][ T5359] udf_free_blocks+0x9e2/0x17f0 [ 70.340086][ T5359] ? lockdep_hardirqs_on+0x9c/0x150 [ 70.340101][ T5359] ? udf_get_fileshortad+0x6e/0x1b0 [ 70.340124][ T5359] ? __pfx_udf_free_blocks+0x10/0x10 [ 70.340151][ T5359] udf_delete_aext+0x4df/0xbc0 [ 70.340166][ T5359] ? udf_get_fileshortad+0xcb/0x1b0 [ 70.340190][ T5359] ? __pfx_udf_delete_aext+0x10/0x10 [ 70.340210][ T5359] udf_prealloc_blocks+0xb7e/0x10b0 [ 70.340233][ T5359] ? udf_get_filelongad+0x6e/0x1b0 [ 70.340254][ T5359] ? __pfx_udf_new_block+0x10/0x10 [ 70.340273][ T5359] ? udf_current_aext+0x660/0xad0 [ 70.340289][ T5359] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 70.340312][ T5359] ? udf_map_block+0x1662/0x45f0 [ 70.340326][ T5359] udf_map_block+0x1f70/0x45f0 [ 70.340349][ T5359] ? __pfx_udf_map_block+0x10/0x10 [ 70.340378][ T5359] ? do_raw_spin_unlock+0x4d/0x240 [ 70.340397][ T5359] __udf_get_block+0x52/0x250 [ 70.340414][ T5359] __block_write_begin_int+0x6b2/0x1900 [ 70.340431][ T5359] ? folio_add_lru+0x1b2/0x3d0 [ 70.340451][ T5359] ? __pfx_udf_get_block+0x10/0x10 [ 70.340464][ T5359] ? __pfx___block_write_begin_int+0x10/0x10 [ 70.340480][ T5359] ? __pfx_udf_get_block+0x10/0x10 [ 70.340493][ T5359] block_write_begin+0x8a/0x120 [ 70.340506][ T5359] ? udf_write_begin+0x92/0x270 [ 70.340522][ T5359] udf_write_begin+0x115/0x270 [ 70.340539][ T5359] generic_perform_write+0x2c2/0x900 [ 70.340560][ T5359] ? __pfx_generic_perform_write+0x10/0x10 [ 70.340574][ T5359] ? file_update_time+0x416/0x490 [ 70.340590][ T5359] ? __generic_file_write_iter+0xf9/0x230 [ 70.340604][ T5359] ? udf_file_write_iter+0x1a3/0x6c0 [ 70.340617][ T5359] udf_file_write_iter+0x2d5/0x6c0 [ 70.340630][ T5359] iter_file_splice_write+0x975/0x10e0 [ 70.340652][ T5359] ? __pfx_iter_file_splice_write+0x10/0x10 [ 70.340669][ T5359] ? rcu_read_lock_any_held+0xb3/0x120 [ 70.340686][ T5359] ? direct_splice_actor+0x10c/0x160 [ 70.340705][ T5359] ? __pfx_iter_file_splice_write+0x10/0x10 [ 70.340724][ T5359] direct_splice_actor+0x101/0x160 [ 70.340744][ T5359] splice_direct_to_actor+0x5a5/0xcc0 [ 70.340770][ T5359] ? __pfx_direct_splice_actor+0x10/0x10 [ 70.340788][ T5359] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 70.340811][ T5359] do_splice_direct+0x181/0x270 [ 70.340831][ T5359] ? __pfx_do_splice_direct+0x10/0x10 [ 70.340850][ T5359] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 70.340882][ T5359] ? rw_verify_area+0x255/0x4d0 [ 70.340900][ T5359] do_sendfile+0x4da/0x7e0 [ 70.340923][ T5359] ? __pfx_do_sendfile+0x10/0x10 [ 70.340940][ T5359] ? rcu_is_watching+0x15/0xb0 [ 70.340955][ T5359] ? __rseq_handle_notify_resume+0x37e/0x11f0 [ 70.340978][ T5359] __se_sys_sendfile64+0x13e/0x190 [ 70.340998][ T5359] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 70.341017][ T5359] ? rcu_is_watching+0x15/0xb0 [ 70.341033][ T5359] ? do_syscall_64+0xbe/0x3b0 [ 70.341050][ T5359] do_syscall_64+0xfa/0x3b0 [ 70.341066][ T5359] ? lockdep_hardirqs_on+0x9c/0x150 [ 70.341081][ T5359] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.341097][ T5359] ? clear_bhb_loop+0x60/0xb0 [ 70.341115][ T5359] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.341129][ T5359] RIP: 0033:0x7f851918eba9 [ 70.341144][ 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 [ 70.341156][ T5359] RSP: 002b:00007f851a007038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 70.341174][ T5359] RAX: ffffffffffffffda RBX: 00007f85193d5fa0 RCX: 00007f851918eba9 [ 70.341185][ T5359] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005 [ 70.341193][ T5359] RBP: 00007f8519211e19 R08: 0000000000000000 R09: 0000000000000000 [ 70.341201][ T5359] R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000 [ 70.341210][ T5359] R13: 00007f85193d6038 R14: 00007f85193d5fa0 R15: 00007ffd895cc0b8 [ 70.341224][ T5359] [ 70.892717][ T5340] Bluetooth: hci0: command tx timeout [ 72.922536][ T5340] Bluetooth: hci0: command tx timeout [ 74.761940][ T55] usb 5-1: unable to get BOS descriptor or descriptor too short [ 74.779605][ T55] usb 5-1: unable to read config index 0 descriptor/start: -32 [ 74.785295][ T55] usb 5-1: chopping to 0 config(s) [ 74.790715][ T55] usb 5-1: can't read configurations, error -32 [ 74.951587][ T55] usb 5-1: new full-speed USB device number 3 using dummy_hcd [ 75.001911][ T5340] Bluetooth: hci0: command tx timeout [ 75.082390][ T55] usb 5-1: device descriptor read/64, error -32 [ 75.192749][ T55] usb usb5-port1: attempt power cycle [ 75.531634][ T55] usb 5-1: new full-speed USB device number 4 using dummy_hcd [ 75.551888][ T55] usb 5-1: device descriptor read/8, error -32