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$hid(0x0, 0x36, &(0x7f0000000140)=ANY=[@ANYBLOB="1201500200000040"], 0x0) bpf$MAP_CREATE(0x0, &(0x7f00000001c0)=ANY=[@ANYBLOB="1603000006000000000000000100000000", @ANYRES32=0x1, @ANYRES32, @ANYRES32=0x0, @ANYRESOCT], 0x48) mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) mount$tmpfs(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f00000001c0)=ANY=[@ANYBLOB="6d706f6c3d625e0efebadfdee3bf1a405f099626bc6a9d6e643a302d4e3a332f"]) truncate(&(0x7f0000000040)='./file1\x00', 0x7fff) r3 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cpuacct.usage_percpu_user\x00', 0x275a, 0x0) write$binfmt_aout(r3, &(0x7f00000002c0)=ANY=[], 0xc1) syz_mount_image$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)="$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") (async) open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x0) (async) ftruncate(r0, 0x2007ffc) (async) sendfile(r0, r0, 0x0, 0x800000009) (async) open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x0) (async) open(&(0x7f0000000080)='./bus\x00', 0x185102, 0x0) (async) ftruncate(r2, 0x2007ffb) (async) sendfile(r1, r2, 0x0, 0x1000000201005) (async) syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000140)=ANY=[@ANYBLOB="1201500200000040"], 0x0) (async) bpf$MAP_CREATE(0x0, &(0x7f00000001c0)=ANY=[@ANYBLOB="1603000006000000000000000100000000", @ANYRES32=0x1, @ANYRES32, @ANYRES32=0x0, @ANYRESOCT], 0x48) (async) mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) (async) mount$tmpfs(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f00000001c0)=ANY=[@ANYBLOB="6d706f6c3d625e0efebadfdee3bf1a405f099626bc6a9d6e643a302d4e3a332f"]) (async) truncate(&(0x7f0000000040)='./file1\x00', 0x7fff) (async) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cpuacct.usage_percpu_user\x00', 0x275a, 0x0) (async) write$binfmt_aout(r3, &(0x7f00000002c0)=ANY=[], 0xc1) (async) [ 85.060996][ T5306] Bluetooth: hci0: command tx timeout [ 85.164943][ T5328] loop0: detected capacity change from 0 to 2048 [ 85.221494][ T5328] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 85.271406][ T5328] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 85.307628][ T5328] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 85.328162][ T5328] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 85.359889][ T25] audit: type=1800 audit(1749671277.369:2): pid=5328 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 [ 85.735477][ T10] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 85.904537][ T5328] [ 85.905836][ T5328] ============================================ [ 85.908864][ T5328] WARNING: possible recursive locking detected [ 85.911943][ T5328] 6.16.0-rc1-syzkaller-00005-g488ef3560196 #0 Not tainted [ 85.915186][ T5328] -------------------------------------------- [ 85.918078][ T5328] syz.0.0/5328 is trying to acquire lock: [ 85.920850][ T5328] ffff8880007b4528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 85.925528][ T5328] [ 85.925528][ T5328] but task is already holding lock: [ 85.928801][ T5328] ffff8880007b4528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_new_block+0xfab/0x1ba0 [ 85.933666][ T5328] [ 85.933666][ T5328] other info that might help us debug this: [ 85.937195][ T5328] Possible unsafe locking scenario: [ 85.937195][ T5328] [ 85.940464][ T5328] CPU0 [ 85.942125][ T5328] ---- [ 85.943817][ T5328] lock(&sbi->s_alloc_mutex); [ 85.946482][ T5328] lock(&sbi->s_alloc_mutex); [ 85.948789][ T5328] [ 85.948789][ T5328] *** DEADLOCK *** [ 85.948789][ T5328] [ 85.952432][ T5328] May be due to missing lock nesting notation [ 85.952432][ T5328] [ 85.956603][ T5328] 5 locks held by syz.0.0/5328: [ 85.959152][ T5328] #0: ffff88803f8490f8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x320 [ 85.963334][ T5328] #1: ffff888011fcc428 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x211/0xa90 [ 85.967569][ T5328] #2: ffff888043bce280 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 85.972818][ T5328] #3: ffff888043bce0b0 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x291/0x42a0 [ 85.977325][ T5328] #4: ffff8880007b4528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_new_block+0xfab/0x1ba0 [ 85.982266][ T5328] [ 85.982266][ T5328] stack backtrace: [ 85.984848][ T5328] CPU: 0 UID: 0 PID: 5328 Comm: syz.0.0 Not tainted 6.16.0-rc1-syzkaller-00005-g488ef3560196 #0 PREEMPT(full) [ 85.984867][ T5328] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.984874][ T5328] Call Trace: [ 85.984883][ T5328] [ 85.984888][ T5328] dump_stack_lvl+0x189/0x250 [ 85.984910][ T5328] ? __pfx_dump_stack_lvl+0x10/0x10 [ 85.984924][ T5328] ? __pfx__printk+0x10/0x10 [ 85.984936][ T5328] ? print_lock_name+0xde/0x100 [ 85.984948][ T5328] print_deadlock_bug+0x28b/0x2a0 [ 85.984960][ T5328] validate_chain+0x1a3f/0x2140 [ 85.984973][ T5328] __lock_acquire+0xab9/0xd20 [ 85.984989][ T5328] ? udf_free_blocks+0x9e2/0x17f0 [ 85.984999][ T5328] lock_acquire+0x120/0x360 [ 85.985012][ T5328] ? udf_free_blocks+0x9e2/0x17f0 [ 85.985024][ T5328] __mutex_lock+0x182/0xe80 [ 85.985082][ T5328] ? udf_free_blocks+0x9e2/0x17f0 [ 85.985092][ T5328] ? __pfx_folio_mark_accessed+0x10/0x10 [ 85.985105][ T5328] ? __bfs+0x154/0x2a0 [ 85.985119][ T5328] ? udf_free_blocks+0x9e2/0x17f0 [ 85.985127][ T5328] ? __pfx___mutex_lock+0x10/0x10 [ 85.985135][ T5328] ? __pfx___might_resched+0x10/0x10 [ 85.985147][ T5328] udf_free_blocks+0x9e2/0x17f0 [ 85.985155][ T5328] ? bdev_getblk+0x7b/0x690 [ 85.985163][ T5328] ? udf_get_fileshortad+0x6e/0x1b0 [ 85.985174][ T5328] ? __pfx_udf_free_blocks+0x10/0x10 [ 85.985185][ T5328] udf_delete_aext+0x4df/0xbc0 [ 85.985195][ T5328] ? udf_get_fileshortad+0x6e/0x1b0 [ 85.985211][ T5328] ? __pfx_udf_delete_aext+0x10/0x10 [ 85.985231][ T5328] udf_new_block+0x1404/0x1ba0 [ 85.985240][ T5328] ? validate_chain+0x897/0x2140 [ 85.985251][ T5328] ? udf_do_extend_file+0x203/0x1180 [ 85.985262][ T5328] ? udf_get_filelongad+0x6e/0x1b0 [ 85.985276][ T5328] ? __pfx_udf_new_block+0x10/0x10 [ 85.985284][ T5328] ? udf_current_aext+0x660/0xad0 [ 85.985300][ T5328] udf_map_block+0x12b1/0x42a0 [ 85.985318][ T5328] ? __pfx_udf_map_block+0x10/0x10 [ 85.985327][ T5328] ? validate_chain+0x897/0x2140 [ 85.985343][ T5328] ? do_raw_spin_lock+0x121/0x290 [ 85.985356][ T5328] ? do_raw_spin_unlock+0x4d/0x240 [ 85.985368][ T5328] __udf_get_block+0x52/0x250 [ 85.985377][ T5328] ? create_empty_buffers+0x465/0x530 [ 85.985390][ T5328] __block_write_begin_int+0x6b2/0x1900 [ 85.985406][ T5328] ? folio_add_lru+0x1b2/0x3d0 [ 85.985418][ T5328] ? __pfx_udf_get_block+0x10/0x10 [ 85.985428][ T5328] ? __pfx___block_write_begin_int+0x10/0x10 [ 85.985443][ T5328] ? __pfx_udf_get_block+0x10/0x10 [ 85.985454][ T5328] block_write_begin+0x8a/0x120 [ 85.985466][ T5328] ? udf_write_begin+0x7d/0x260 [ 85.985477][ T5328] udf_write_begin+0x100/0x260 [ 85.985488][ T5328] generic_perform_write+0x2c4/0x910 [ 85.985524][ T5328] ? __pfx_generic_perform_write+0x10/0x10 [ 85.985538][ T5328] ? file_update_time+0x2da/0x490 [ 85.985552][ T5328] ? __generic_file_write_iter+0xf9/0x230 [ 85.985566][ T5328] ? udf_file_write_iter+0x1a3/0x6c0 [ 85.985576][ T5328] udf_file_write_iter+0x2d5/0x6c0 [ 85.985587][ T5328] vfs_write+0x548/0xa90 [ 85.985603][ T5328] ? __pfx_udf_file_write_iter+0x10/0x10 [ 85.985613][ T5328] ? __pfx_vfs_write+0x10/0x10 [ 85.985630][ T5328] ? __fget_files+0x2a/0x420 [ 85.985643][ T5328] ksys_write+0x145/0x250 [ 85.985653][ T5328] ? __pfx_ksys_write+0x10/0x10 [ 85.985662][ T5328] ? rcu_is_watching+0x15/0xb0 [ 85.985676][ T5328] ? do_syscall_64+0xbe/0x3b0 [ 85.985683][ T5328] do_syscall_64+0xfa/0x3b0 [ 85.985690][ T5328] ? lockdep_hardirqs_on+0x9c/0x150 [ 85.985701][ T5328] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.985708][ T5328] ? clear_bhb_loop+0x60/0xb0 [ 85.985716][ T5328] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.985724][ T5328] RIP: 0033:0x7fd60b38e929 [ 85.985736][ T5328] 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 [ 85.985745][ T5328] RSP: 002b:00007fd60c248038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 85.985758][ T5328] RAX: ffffffffffffffda RBX: 00007fd60b5b5fa0 RCX: 00007fd60b38e929 [ 85.985766][ T5328] RDX: 00000000000000c1 RSI: 00002000000002c0 RDI: 0000000000000008 [ 85.985772][ T5328] RBP: 00007fd60b410b39 R08: 0000000000000000 R09: 0000000000000000 [ 85.985778][ T5328] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.985785][ T5328] R13: 0000000000000000 R14: 00007fd60b5b5fa0 R15: 00007ffdf56d8838 [ 85.985796][ T5328] [ 87.095577][ T5306] Bluetooth: hci0: command tx timeout [ 89.175715][ T5306] Bluetooth: hci0: command tx timeout [ 90.935550][ T10] usb 5-1: unable to get BOS descriptor or descriptor too short [ 90.939104][ T10] usb 5-1: no configurations [ 90.941524][ T10] usb 5-1: can't read configurations, error -22 [ 91.075364][ T10] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 91.205350][ T10] usb 5-1: device descriptor read/64, error -32 [ 91.255484][ T5306] Bluetooth: hci0: command tx timeout [ 91.315529][ T10] usb usb5-port1: attempt power cycle [ 91.655368][ T10] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 91.675605][ T10] usb 5-1: device descriptor read/8, error -32 [ 91.915341][ T10] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 91.935700][ T10] usb 5-1: device descriptor read/8, error -32 [ 92.045758][ T10] usb usb5-port1: unable to enumerate USB device