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', 0x185102, 0x0) ftruncate(r2, 0x2007ffb) sendfile(r1, r2, 0x0, 0x1000000201005) syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000140)={{0x12, 0x1, 0x250, 0x0, 0x0, 0x0, 0x40, 0x6cb, 0x2968, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x2, 0x20, 0x5, [{{0x9, 0x4, 0x0, 0xfe, 0x1, 0x3, 0x1, 0x3, 0x0, {0x9, 0x21, 0x7, 0x1, 0x1, {0x22, 0x9f8}}, {{{0x9, 0x5, 0x81, 0x3, 0x40, 0x1, 0x80, 0xb5}}}}}]}}]}}, 0x0) truncate(&(0x7f0000000040)='./file1\x00', 0x7fff) r3 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140), 0x0, 0x0) r4 = ioctl$KVM_CREATE_VM(r3, 0xae01, 0x0) r5 = userfaultfd(0x80001) ioctl$UFFDIO_API(r5, 0xc018aa3f, &(0x7f00000000c0)={0xaa, 0x749}) ioctl$UFFDIO_REGISTER(r5, 0xc020aa00, &(0x7f0000000200)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1}) madvise(&(0x7f00008d7000/0x1000)=nil, 0x1000, 0x4) readv(r5, &(0x7f0000000040)=[{&(0x7f0000000180)=""/80, 0x50}], 0x7) r6 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000000c0)='memory.events\x00', 0x275a, 0x0) write$binfmt_script(r6, &(0x7f0000000100), 0xfecc) mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r6, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r4, 0x4020ae46, &(0x7f0000000080)={0x10002, 0x7, 0x1000, 0x2000, &(0x7f0000000000/0x2000)=nil}) ioctl$VIDIOC_S_AUDOUT(r2, 0x40345632, &(0x7f0000000280)={0x4, "c2ca25ef04b4aaab150863ec34c1991a262f3f021fb74c1684dd2eba56c4fa75", 0x2}) creat(&(0x7f0000000040)='./bus\x00', 0x0) [ 89.489812][ T5306] Bluetooth: hci0: command tx timeout [ 89.725802][ T5326] loop0: detected capacity change from 0 to 2048 [ 89.773339][ T5326] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 89.822505][ T5326] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 89.834625][ T5326] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 89.860286][ T5326] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 89.884041][ T25] audit: type=1800 audit(1749719880.554:2): pid=5326 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 [ 90.247569][ T5320] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 90.559371][ T5326] [ 90.560550][ T5326] ============================================ [ 90.563357][ T5326] WARNING: possible recursive locking detected [ 90.566529][ T5326] 6.16.0-rc1-syzkaller-00010-g2c4a1f3fe03e #0 Not tainted [ 90.570051][ T5326] -------------------------------------------- [ 90.572925][ T5326] syz.0.0/5326 is trying to acquire lock: [ 90.575658][ T5326] ffff88804019b128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 90.580606][ T5326] [ 90.580606][ T5326] but task is already holding lock: [ 90.583928][ T5326] ffff88804019b128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 90.588143][ T5326] [ 90.588143][ T5326] other info that might help us debug this: [ 90.591941][ T5326] Possible unsafe locking scenario: [ 90.591941][ T5326] [ 90.595231][ T5326] CPU0 [ 90.596785][ T5326] ---- [ 90.598391][ T5326] lock(&sbi->s_alloc_mutex); [ 90.600888][ T5326] lock(&sbi->s_alloc_mutex); [ 90.603551][ T5326] [ 90.603551][ T5326] *** DEADLOCK *** [ 90.603551][ T5326] [ 90.606892][ T5326] May be due to missing lock nesting notation [ 90.606892][ T5326] [ 90.610192][ T5326] 5 locks held by syz.0.0/5326: [ 90.612262][ T5326] #0: ffff888000aca7f8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x320 [ 90.616406][ T5326] #1: ffff88803ddf4428 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x211/0xa90 [ 90.621151][ T5326] #2: ffff888012765c20 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 90.626099][ T5326] #3: ffff888012765a50 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x291/0x42a0 [ 90.630456][ T5326] #4: ffff88804019b128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 90.635593][ T5326] [ 90.635593][ T5326] stack backtrace: [ 90.639248][ T5326] CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted 6.16.0-rc1-syzkaller-00010-g2c4a1f3fe03e #0 PREEMPT(full) [ 90.639269][ T5326] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 90.639277][ T5326] Call Trace: [ 90.639286][ T5326] [ 90.639318][ T5326] dump_stack_lvl+0x189/0x250 [ 90.639346][ T5326] ? __pfx_dump_stack_lvl+0x10/0x10 [ 90.639365][ T5326] ? __pfx__printk+0x10/0x10 [ 90.639377][ T5326] ? print_lock_name+0xde/0x100 [ 90.639388][ T5326] print_deadlock_bug+0x28b/0x2a0 [ 90.639400][ T5326] validate_chain+0x1a3f/0x2140 [ 90.639411][ T5326] ? preempt_schedule_thunk+0x16/0x30 [ 90.639428][ T5326] __lock_acquire+0xab9/0xd20 [ 90.639444][ T5326] ? udf_free_blocks+0x9e2/0x17f0 [ 90.639455][ T5326] lock_acquire+0x120/0x360 [ 90.639468][ T5326] ? udf_free_blocks+0x9e2/0x17f0 [ 90.639482][ T5326] __mutex_lock+0x182/0xe80 [ 90.639543][ T5326] ? udf_free_blocks+0x9e2/0x17f0 [ 90.639555][ T5326] ? __pfx_folio_mark_accessed+0x10/0x10 [ 90.639570][ T5326] ? rcu_read_unlock_special+0x3fe/0x4c0 [ 90.639587][ T5326] ? udf_free_blocks+0x9e2/0x17f0 [ 90.639597][ T5326] ? __pfx___mutex_lock+0x10/0x10 [ 90.639609][ T5326] ? __pfx___might_resched+0x10/0x10 [ 90.639626][ T5326] udf_free_blocks+0x9e2/0x17f0 [ 90.639638][ T5326] ? bdev_getblk+0x7b/0x690 [ 90.639657][ T5326] ? udf_get_fileshortad+0x6e/0x1b0 [ 90.639675][ T5326] ? __pfx_udf_free_blocks+0x10/0x10 [ 90.639685][ T5326] udf_delete_aext+0x4df/0xbc0 [ 90.639697][ T5326] ? udf_get_fileshortad+0xcb/0x1b0 [ 90.639713][ T5326] ? __pfx_udf_delete_aext+0x10/0x10 [ 90.639727][ T5326] udf_prealloc_blocks+0xb7e/0x10b0 [ 90.639739][ T5326] ? udf_get_filelongad+0x6e/0x1b0 [ 90.639754][ T5326] ? __pfx_udf_new_block+0x10/0x10 [ 90.639765][ T5326] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 90.639778][ T5326] udf_map_block+0x1ddd/0x42a0 [ 90.639796][ T5326] ? __pfx_udf_map_block+0x10/0x10 [ 90.639817][ T5326] ? do_raw_spin_unlock+0x4d/0x240 [ 90.639830][ T5326] __udf_get_block+0x52/0x250 [ 90.639842][ T5326] __block_write_begin_int+0x6b2/0x1900 [ 90.639858][ T5326] ? folio_add_lru+0x1b2/0x3d0 [ 90.639871][ T5326] ? __pfx_udf_get_block+0x10/0x10 [ 90.639882][ T5326] ? __pfx___block_write_begin_int+0x10/0x10 [ 90.639896][ T5326] ? __pfx_udf_get_block+0x10/0x10 [ 90.639907][ T5326] block_write_begin+0x8a/0x120 [ 90.639919][ T5326] ? udf_write_begin+0x7d/0x260 [ 90.639930][ T5326] udf_write_begin+0x100/0x260 [ 90.639940][ T5326] generic_perform_write+0x2c4/0x910 [ 90.639958][ T5326] ? __pfx_generic_perform_write+0x10/0x10 [ 90.639971][ T5326] ? file_update_time+0x2da/0x490 [ 90.639986][ T5326] ? __generic_file_write_iter+0xf9/0x230 [ 90.640000][ T5326] ? udf_file_write_iter+0x1a3/0x6c0 [ 90.640010][ T5326] udf_file_write_iter+0x2d5/0x6c0 [ 90.640022][ T5326] vfs_write+0x548/0xa90 [ 90.640039][ T5326] ? __pfx_udf_file_write_iter+0x10/0x10 [ 90.640049][ T5326] ? __pfx_vfs_write+0x10/0x10 [ 90.640068][ T5326] ? __fget_files+0x2a/0x420 [ 90.640081][ T5326] ksys_write+0x145/0x250 [ 90.640090][ T5326] ? __pfx_ksys_write+0x10/0x10 [ 90.640099][ T5326] ? rcu_is_watching+0x15/0xb0 [ 90.640117][ T5326] ? do_syscall_64+0xbe/0x3b0 [ 90.640128][ T5326] do_syscall_64+0xfa/0x3b0 [ 90.640138][ T5326] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.640151][ T5326] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 90.640164][ T5326] ? clear_bhb_loop+0x60/0xb0 [ 90.640176][ T5326] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.640187][ T5326] RIP: 0033:0x7ff9dc58e929 [ 90.640200][ T5326] 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 [ 90.640210][ T5326] RSP: 002b:00007ff9dd3f4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 90.640223][ T5326] RAX: ffffffffffffffda RBX: 00007ff9dc7b5fa0 RCX: 00007ff9dc58e929 [ 90.640231][ T5326] RDX: 000000000000fecc RSI: 0000200000000100 RDI: 000000000000000b [ 90.640238][ T5326] RBP: 00007ff9dc610b39 R08: 0000000000000000 R09: 0000000000000000 [ 90.640246][ T5326] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 90.640253][ T5326] R13: 0000000000000000 R14: 00007ff9dc7b5fa0 R15: 00007ffef2990758 [ 90.640264][ T5326] [ 91.547582][ T4673] Bluetooth: hci0: command tx timeout [ 91.868110][ T54] cfg80211: failed to load regulatory.db [ 93.628459][ T4673] Bluetooth: hci0: command tx timeout [ 95.468306][ T5320] usb 5-1: unable to get BOS descriptor or descriptor too short [ 95.475639][ T5320] usb 5-1: unable to read config index 0 descriptor/start: -32 [ 95.479145][ T5320] usb 5-1: chopping to 0 config(s) [ 95.481414][ T5320] usb 5-1: can't read configurations, error -32 [ 95.611138][ T5320] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 95.707609][ T4673] Bluetooth: hci0: command tx timeout [ 95.737557][ T5320] usb 5-1: device descriptor read/64, error -32 [ 95.847645][ T5320] usb usb5-port1: attempt power cycle [ 96.187553][ T5320] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 96.208087][ T5320] usb 5-1: device descriptor read/8, error -32