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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") pipe(&(0x7f00000001c0)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) bind$inet6(r1, &(0x7f0000000000)={0xa, 0x8000002}, 0x1c) sendto$inet6(r1, 0x0, 0x0, 0x22004001, &(0x7f0000b63fe4)={0xa, 0x2, 0x0, @loopback}, 0x1c) sendto$inet6(r1, &(0x7f0000000080)='D', 0x1, 0x0, 0x0, 0x0) shutdown(r1, 0x1) splice(r1, 0x0, r0, 0x0, 0x406f413, 0x0) r2 = open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x0) syz_usb_connect$cdc_ecm(0x3, 0x52, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000020000202505a1a440000000010109024000010100c07d090400fe1602020000052406000005240000000d240f01000000000000000000052401"], 0x0) r3 = syz_open_dev$usbfs(&(0x7f0000000180), 0x10000001d, 0x8041) ioctl$USBDEVFS_IOCTL(r3, 0xc0105512, &(0x7f0000000200)=@usbdevfs_connect) ftruncate(r2, 0x2007ffc) sendfile(r2, r2, 0x0, 0x800000009) r4 = open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x0) r5 = open(&(0x7f0000000080)='./bus\x00', 0x107382, 0x1d0) ftruncate(r5, 0x2007ffb) sendfile(r4, r5, 0x0, 0x1000000201005) syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000380)=ANY=[@ANYBLOB="1201500200000040"], 0x0) open(&(0x7f0000000180)='./bus\x00', 0x14937e, 0x111) creat(&(0x7f00000001c0)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00', 0x0) [ 102.509936][ T4669] Bluetooth: hci0: command tx timeout [ 102.667656][ T5325] loop0: detected capacity change from 0 to 2048 [ 102.722764][ T5325] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 102.755796][ T5325] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 102.778877][ T5325] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 102.799472][ T5325] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 102.845226][ T24] audit: type=1800 audit(1775223155.559:2): pid=5325 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 [ 103.107995][ T4682] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 103.268535][ T4682] usb 5-1: Using ep0 maxpacket: 32 [ 103.276031][ T4682] usb 5-1: config 1 has an invalid descriptor of length 105, skipping remainder of the config [ 103.284307][ T4682] usb 5-1: config 1 interface 0 altsetting 254 has 0 endpoint descriptors, different from the interface descriptor's value: 22 [ 103.301955][ T4682] usb 5-1: config 1 interface 0 has no altsetting 0 [ 103.308280][ T4682] usb 5-1: New USB device found, idVendor=0525, idProduct=a4a1, bcdDevice= 0.40 [ 103.311518][ T4682] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=1 [ 103.323719][ T4682] usb 5-1: SerialNumber: syz [ 103.341626][ T4682] cdc_acm 5-1:1.0: Control and data interfaces are not separated! [ 103.346537][ T4682] cdc_acm 5-1:1.0: This needs exactly 3 endpoints [ 103.352947][ T4682] cdc_acm 5-1:1.0: probe with driver cdc_acm failed with error -22 [ 103.545091][ T5325] cdc_acm 5-1:1.0: Control and data interfaces are not separated! [ 103.557904][ T5325] cdc_acm 5-1:1.0: This needs exactly 3 endpoints [ 103.560619][ T5325] cdc_acm 5-1:1.0: probe with driver cdc_acm failed with error -22 [ 103.693721][ T5333] UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy [ 103.730707][ T5333] misc raw-gadget: fail, usb_gadget_register_driver returned -16 [ 103.805598][ T5325] [ 103.806848][ T5325] ============================================ [ 103.809613][ T5325] WARNING: possible recursive locking detected [ 103.812537][ T5325] syzkaller #0 Not tainted [ 103.814661][ T5325] -------------------------------------------- [ 103.817510][ T5325] syz.0.0/5325 is trying to acquire lock: [ 103.820390][ T5325] ffff8880126bf128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0xaaf/0x1940 [ 103.825217][ T5325] [ 103.825217][ T5325] but task is already holding lock: [ 103.828440][ T5325] ffff8880126bf128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8f6/0x1130 [ 103.833368][ T5325] [ 103.833368][ T5325] other info that might help us debug this: [ 103.838069][ T5325] Possible unsafe locking scenario: [ 103.838069][ T5325] [ 103.841677][ T5325] CPU0 [ 103.843180][ T5325] ---- [ 103.844667][ T5325] lock(&sbi->s_alloc_mutex); [ 103.846847][ T5325] lock(&sbi->s_alloc_mutex); [ 103.849031][ T5325] [ 103.849031][ T5325] *** DEADLOCK *** [ 103.849031][ T5325] [ 103.852770][ T5325] May be due to missing lock nesting notation [ 103.852770][ T5325] [ 103.857264][ T5325] 4 locks held by syz.0.0/5325: [ 103.859969][ T5325] #0: ffff88801209e420 (sb_writers#12){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 [ 103.864388][ T5325] #1: ffff88804676bb70 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: udf_file_write_iter+0x6f/0x6b0 [ 103.869918][ T5325] #2: ffff88804676b9a0 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x2a4/0x4330 [ 103.874706][ T5325] #3: ffff8880126bf128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8f6/0x1130 [ 103.879452][ T5325] [ 103.879452][ T5325] stack backtrace: [ 103.882120][ T5325] CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 103.882143][ T5325] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 103.882152][ T5325] Call Trace: [ 103.882161][ T5325] [ 103.882170][ T5325] dump_stack_lvl+0xe8/0x150 [ 103.882195][ T5325] print_deadlock_bug+0x279/0x290 [ 103.882215][ T5325] __lock_acquire+0x253f/0x2cf0 [ 103.882232][ T5325] ? sched_clock_cpu+0x74/0x440 [ 103.882253][ T5325] lock_acquire+0xf0/0x2e0 [ 103.882269][ T5325] ? udf_free_blocks+0xaaf/0x1940 [ 103.882285][ T5325] __mutex_lock+0x19f/0x1300 [ 103.882364][ T5325] ? udf_free_blocks+0xaaf/0x1940 [ 103.882379][ T5325] ? __lock_acquire+0x6b5/0x2cf0 [ 103.882393][ T5325] ? udf_free_blocks+0xaaf/0x1940 [ 103.882413][ T5325] ? __pfx___mutex_lock+0x10/0x10 [ 103.882430][ T5325] ? folio_mark_accessed+0x442/0x8c0 [ 103.882448][ T5325] udf_free_blocks+0xaaf/0x1940 [ 103.882464][ T5325] ? bdev_getblk+0x582/0x6e0 [ 103.882477][ T5325] ? udf_get_fileshortad+0x6e/0x1b0 [ 103.882490][ T5325] ? udf_current_aext+0x698/0xb30 [ 103.882506][ T5325] ? __pfx_udf_free_blocks+0x10/0x10 [ 103.882520][ T5325] ? udf_next_aext+0x447/0x530 [ 103.882539][ T5325] udf_delete_aext+0x4fb/0xbd0 [ 103.882558][ T5325] ? __pfx_udf_delete_aext+0x10/0x10 [ 103.882572][ T5325] ? udf_next_aext+0x44e/0x530 [ 103.882589][ T5325] udf_prealloc_blocks+0xbd3/0x1130 [ 103.882602][ T5325] ? bdev_getblk+0x582/0x6e0 [ 103.882617][ T5325] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 103.882632][ T5325] ? udf_map_block+0x15ca/0x4330 [ 103.882646][ T5325] udf_map_block+0x1e8a/0x4330 [ 103.882667][ T5325] ? __pfx_udf_map_block+0x10/0x10 [ 103.882687][ T5325] ? rcu_is_watching+0x15/0xb0 [ 103.882710][ T5325] ? do_raw_spin_unlock+0x4d/0x210 [ 103.882723][ T5325] __udf_get_block+0x52/0x250 [ 103.882740][ T5325] __block_write_begin_int+0x6c6/0x1910 [ 103.882757][ T5325] ? __pfx_udf_get_block+0x10/0x10 [ 103.882770][ T5325] ? __pfx___block_write_begin_int+0x10/0x10 [ 103.882785][ T5325] ? __pfx_udf_get_block+0x10/0x10 [ 103.882797][ T5325] block_write_begin+0x8d/0x120 [ 103.882809][ T5325] ? udf_write_begin+0x92/0x270 [ 103.882823][ T5325] udf_write_begin+0x118/0x270 [ 103.882837][ T5325] generic_perform_write+0x2e2/0x8f0 [ 103.882854][ T5325] ? __pfx_generic_perform_write+0x10/0x10 [ 103.882868][ T5325] ? generic_file_direct_write+0x385/0x3e0 [ 103.882885][ T5325] __generic_file_write_iter+0x1ae/0x230 [ 103.882901][ T5325] udf_file_write_iter+0x2ca/0x6b0 [ 103.882918][ T5325] iter_file_splice_write+0x9a1/0x10f0 [ 103.882942][ T5325] ? __pfx_iter_file_splice_write+0x10/0x10 [ 103.882963][ T5325] ? __pfx_iter_file_splice_write+0x10/0x10 [ 103.882980][ T5325] direct_splice_actor+0x101/0x160 [ 103.882998][ T5325] splice_direct_to_actor+0x53a/0xc70 [ 103.883018][ T5325] ? __pfx_direct_splice_actor+0x10/0x10 [ 103.883043][ T5325] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 103.883070][ T5325] do_splice_direct+0x195/0x290 [ 103.883094][ T5325] ? __pfx_do_splice_direct+0x10/0x10 [ 103.883119][ T5325] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 103.883148][ T5325] ? rw_verify_area+0x255/0x4d0 [ 103.883177][ T5325] do_sendfile+0x535/0x7d0 [ 103.883203][ T5325] ? __pfx_do_sendfile+0x10/0x10 [ 103.883227][ T5325] ? __se_sys_futex+0x3a8/0x450 [ 103.883252][ T5325] __se_sys_sendfile64+0x144/0x1a0 [ 103.883275][ T5325] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 103.883301][ T5325] do_syscall_64+0x14d/0xf80 [ 103.883323][ T5325] ? trace_irq_disable+0x3b/0x150 [ 103.883339][ T5325] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 103.883357][ T5325] ? clear_bhb_loop+0x40/0x90 [ 103.883378][ T5325] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 103.883397][ T5325] RIP: 0033:0x7f2afc19c819 [ 103.883427][ T5325] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 103.883443][ T5325] RSP: 002b:00007f2afd0d4fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 103.883467][ T5325] RAX: ffffffffffffffda RBX: 00007f2afc415fa0 RCX: 00007f2afc19c819 [ 103.883481][ T5325] RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000007 [ 103.883493][ T5325] RBP: 00007f2afc232c91 R08: 0000000000000000 R09: 0000000000000000 [ 103.883505][ T5325] R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000 [ 103.883517][ T5325] R13: 00007f2afc416038 R14: 00007f2afc415fa0 R15: 00007fff3d317128 [ 103.883537][ T5325] [ 104.587970][ T4669] Bluetooth: hci0: command tx timeout [ 106.668900][ T4669] Bluetooth: hci0: command tx timeout