program: r0 = bpf$MAP_CREATE(0x0, &(0x7f00000009c0)=ANY=[@ANYBLOB="0a00000004000000ff0f000007"], 0x48) bpf$PROG_LOAD(0x5, &(0x7f0000000180)={0x0, 0xc, &(0x7f0000000440)=ANY=[@ANYBLOB="1800000000000000000000000000000018110000", @ANYRES32=r0, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000000000000b70400000000000085000000c300000095"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) 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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") r1 = open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x0) ftruncate(r1, 0x2007ffc) sendfile(r1, r1, 0x0, 0x800000009) r2 = open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x0) r3 = open(&(0x7f0000000080)='./bus\x00', 0x107382, 0x1d0) ftruncate(r3, 0x2007ffb) sendfile(r2, r3, 0x0, 0x1000000201005) syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000380)=ANY=[@ANYBLOB="1201500200000040"], 0x0) truncate(&(0x7f00000013c0)='./file1\x00', 0x0) creat(&(0x7f0000000000)='./bus\x00', 0x0) r4 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, &(0x7f0000000440)=ANY=[], &(0x7f0000000500)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000cc0)='mmap_lock_acquire_returned\x00', r4}, 0x10) r5 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc)=0x0) timer_settime(r6, 0x1, &(0x7f0000000280)={{0x0, 0x989680}, {0x0, 0x3938700}}, 0x0) futex(&(0x7f000000cffc)=0x1, 0x86, 0x2, 0x0, 0x0, 0xfffffffc) r7 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cgroup.controllers\x00', 0x275a, 0x0) write$binfmt_script(r7, &(0x7f0000000000), 0x208e24b) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xa, 0x28011, r7, 0x0) madvise(&(0x7f00004a2000/0x2000)=nil, 0x2000, 0xb) [ 68.573274][ T5338] Bluetooth: hci0: command tx timeout [ 68.659406][ T5357] loop0: detected capacity change from 0 to 2048 [ 68.688455][ T5357] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 68.705900][ T5357] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 68.717496][ T5357] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 68.727303][ T5357] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 68.743392][ T25] audit: type=1800 audit(1757444717.381:2): pid=5357 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 [ 69.105420][ T5351] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 69.513113][ T5358] [ 69.514408][ T5358] ============================================ [ 69.517151][ T5358] WARNING: possible recursive locking detected [ 69.519799][ T5358] syzkaller #0 Not tainted [ 69.521698][ T5358] -------------------------------------------- [ 69.524303][ T5358] syz.0.0/5358 is trying to acquire lock: [ 69.526647][ T5358] ffff888040410528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 69.531047][ T5358] [ 69.531047][ T5358] but task is already holding lock: [ 69.534051][ T5358] ffff888040410528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 69.538861][ T5358] [ 69.538861][ T5358] other info that might help us debug this: [ 69.542033][ T5358] Possible unsafe locking scenario: [ 69.542033][ T5358] [ 69.545104][ T5358] CPU0 [ 69.546566][ T5358] ---- [ 69.547956][ T5358] lock(&sbi->s_alloc_mutex); [ 69.550002][ T5358] lock(&sbi->s_alloc_mutex); [ 69.551987][ T5358] [ 69.551987][ T5358] *** DEADLOCK *** [ 69.551987][ T5358] [ 69.555252][ T5358] May be due to missing lock nesting notation [ 69.555252][ T5358] [ 69.558785][ T5358] 5 locks held by syz.0.0/5358: [ 69.560821][ T5358] #0: ffff8880114749b8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x320 [ 69.564548][ T5358] #1: ffff888037e72428 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x211/0xb30 [ 69.568251][ T5358] #2: ffff8880449a1c20 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 69.572593][ T5358] #3: ffff8880449a1a50 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x283/0x45f0 [ 69.576596][ T5358] #4: ffff888040410528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 69.581359][ T5358] [ 69.581359][ T5358] stack backtrace: [ 69.583792][ T5358] CPU: 0 UID: 0 PID: 5358 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 69.583806][ T5358] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 69.583812][ T5358] Call Trace: [ 69.583820][ T5358] [ 69.583830][ T5358] dump_stack_lvl+0x189/0x250 [ 69.583847][ T5358] ? __pfx_dump_stack_lvl+0x10/0x10 [ 69.583859][ T5358] ? __pfx__printk+0x10/0x10 [ 69.583900][ T5358] ? print_lock_name+0xde/0x100 [ 69.583916][ T5358] print_deadlock_bug+0x28b/0x2a0 [ 69.583931][ T5358] validate_chain+0x1a3f/0x2140 [ 69.583945][ T5358] __lock_acquire+0xab9/0xd20 [ 69.583956][ T5358] ? udf_free_blocks+0x9e2/0x17f0 [ 69.583966][ T5358] lock_acquire+0x120/0x360 [ 69.583975][ T5358] ? udf_free_blocks+0x9e2/0x17f0 [ 69.583985][ T5358] __mutex_lock+0x187/0x1350 [ 69.584028][ T5358] ? udf_free_blocks+0x9e2/0x17f0 [ 69.584043][ T5358] ? folio_mark_accessed+0x42c/0x8b0 [ 69.584060][ T5358] ? __pfx_folio_mark_accessed+0x10/0x10 [ 69.584074][ T5358] ? udf_free_blocks+0x9e2/0x17f0 [ 69.584088][ T5358] ? __pfx___mutex_lock+0x10/0x10 [ 69.584101][ T5358] ? __pfx___might_resched+0x10/0x10 [ 69.584111][ T5358] ? fs_reclaim_acquire+0x7d/0x100 [ 69.584126][ T5358] udf_free_blocks+0x9e2/0x17f0 [ 69.584143][ T5358] ? udf_get_fileshortad+0x6e/0x1b0 [ 69.584155][ T5358] ? __pfx_udf_free_blocks+0x10/0x10 [ 69.584172][ T5358] udf_delete_aext+0x4df/0xbc0 [ 69.584182][ T5358] ? udf_get_fileshortad+0xcb/0x1b0 [ 69.584196][ T5358] ? __pfx_udf_delete_aext+0x10/0x10 [ 69.584210][ T5358] udf_prealloc_blocks+0xb7e/0x10b0 [ 69.584227][ T5358] ? udf_get_filelongad+0x6e/0x1b0 [ 69.584242][ T5358] ? udf_current_aext+0x660/0xad0 [ 69.584254][ T5358] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 69.584268][ T5358] udf_map_block+0x1f70/0x45f0 [ 69.584281][ T5358] ? __pfx_udf_map_block+0x10/0x10 [ 69.584290][ T5358] ? mlock_drain_local+0x79/0x490 [ 69.584302][ T5358] ? mlock_drain_local+0x28e/0x490 [ 69.584324][ T5358] ? do_raw_spin_unlock+0x4d/0x240 [ 69.584337][ T5358] __udf_get_block+0x52/0x250 [ 69.584348][ T5358] __block_write_begin_int+0x6b2/0x1900 [ 69.584362][ T5358] ? folio_add_lru+0x1b2/0x3d0 [ 69.584376][ T5358] ? __pfx_udf_get_block+0x10/0x10 [ 69.584386][ T5358] ? __pfx___block_write_begin_int+0x10/0x10 [ 69.584398][ T5358] ? __pfx_udf_get_block+0x10/0x10 [ 69.584408][ T5358] block_write_begin+0x8a/0x120 [ 69.584417][ T5358] ? udf_write_begin+0x92/0x270 [ 69.584427][ T5358] udf_write_begin+0x115/0x270 [ 69.584437][ T5358] generic_perform_write+0x2c5/0x900 [ 69.584450][ T5358] ? __pfx_generic_perform_write+0x10/0x10 [ 69.584459][ T5358] ? file_update_time+0x416/0x490 [ 69.584470][ T5358] ? __generic_file_write_iter+0xf9/0x230 [ 69.584480][ T5358] ? udf_file_write_iter+0x1a3/0x6c0 [ 69.584491][ T5358] udf_file_write_iter+0x2d5/0x6c0 [ 69.584503][ T5358] vfs_write+0x5c6/0xb30 [ 69.584516][ T5358] ? __pfx_udf_file_write_iter+0x10/0x10 [ 69.584528][ T5358] ? __pfx_vfs_write+0x10/0x10 [ 69.584541][ T5358] ? __fget_files+0x2a/0x420 [ 69.584554][ T5358] ksys_write+0x145/0x250 [ 69.584565][ T5358] ? __pfx_ksys_write+0x10/0x10 [ 69.584574][ T5358] ? rcu_is_watching+0x15/0xb0 [ 69.584586][ T5358] ? do_syscall_64+0xbe/0x3b0 [ 69.584597][ T5358] do_syscall_64+0xfa/0x3b0 [ 69.584606][ T5358] ? lockdep_hardirqs_on+0x9c/0x150 [ 69.584622][ T5358] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 69.584633][ T5358] ? clear_bhb_loop+0x60/0xb0 [ 69.584645][ T5358] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 69.584653][ T5358] RIP: 0033:0x7f026fb8eba9 [ 69.584668][ T5358] 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 [ 69.584675][ T5358] RSP: 002b:00007f0270acb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 69.584685][ T5358] RAX: ffffffffffffffda RBX: 00007f026fdd6090 RCX: 00007f026fb8eba9 [ 69.584690][ T5358] RDX: 000000000208e24b RSI: 0000200000000000 RDI: 000000000000000c [ 69.584695][ T5358] RBP: 00007f026fc11e19 R08: 0000000000000000 R09: 0000000000000000 [ 69.584699][ T5358] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 69.584703][ T5358] R13: 00007f026fdd6128 R14: 00007f026fdd6090 R15: 00007ffe9ebc34e8 [ 69.584711][ T5358] [ 70.595575][ T5338] Bluetooth: hci0: command tx timeout [ 72.675667][ T5338] Bluetooth: hci0: command tx timeout [ 74.275670][ T5351] usb 5-1: unable to get BOS descriptor or descriptor too short [ 74.278316][ T5351] usb 5-1: no configurations [ 74.279931][ T5351] usb 5-1: can't read configurations, error -22 [ 74.405388][ T5351] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 74.535519][ T5351] usb 5-1: device descriptor read/64, error -32 [ 74.645518][ T5351] usb usb5-port1: attempt power cycle [ 74.755611][ T5338] Bluetooth: hci0: command tx timeout [ 74.985531][ T5351] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 75.005727][ T5351] usb 5-1: device descriptor read/8, error -32 [ 75.245437][ T5351] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 75.266468][ T5351] usb 5-1: device descriptor read/8, error -32 [ 75.375773][ T5351] usb usb5-port1: unable to enumerate USB device