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) r3 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPCTNL_MSG_CT_NEW(r3, &(0x7f0000000080)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000140)={0xb8, 0x0, 0x1, 0x401, 0x0, 0x0, {0xa}, [@CTA_TIMEOUT={0x8}, @CTA_TUPLE_REPLY={0x3c, 0x2, 0x0, 0x1, [@CTA_TUPLE_PROTO={0xc, 0x2, 0x0, 0x1, {0x5}}, @CTA_TUPLE_IP={0x2c, 0x1, 0x0, 0x1, @ipv6={{0x14, 0x3, @private2}, {0x14, 0x4, @local}}}]}, @CTA_TUPLE_ORIG={0x3c, 0x1, 0x0, 0x1, [@CTA_TUPLE_IP={0x2c, 0x1, 0x0, 0x1, @ipv6={{0x14, 0x3, @empty}, {0x14, 0x4, @ipv4={'\x00', '\xff\xff', @multicast1}}}}, @CTA_TUPLE_PROTO={0xc, 0x2, 0x0, 0x1, {0x5}}]}, @CTA_SYNPROXY={0x1c, 0x18, 0x0, 0x1, [@CTA_SYNPROXY_TSOFF={0x8}, @CTA_SYNPROXY_ISN={0x8}, @CTA_SYNPROXY_ITS={0x8}]}, @CTA_MARK={0x8}]}, 0xb8}}, 0x0) sendfile(r1, r2, 0x0, 0x1000000201005) syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000140)={{0x12, 0x1, 0x250, 0x0, 0x0, 0x0, 0x40, 0x6cb, 0x2968, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x2, 0x20, 0x5, [{{0x9, 0x4, 0x0, 0xfe, 0x1, 0x3, 0x1, 0x3, 0x0, {0x9, 0x21, 0x7, 0x1, 0x1, {0x22, 0x9f8}}, {{{0x9, 0x5, 0x81, 0x3, 0x40, 0x1, 0x80, 0xb5}}}}}]}}]}}, 0x0) truncate(&(0x7f0000000040)='./file1\x00', 0x7fff) creat(&(0x7f0000000040)='./bus\x00', 0x0) bpf$PROG_LOAD(0x2, 0x0, 0x0) syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000500)='./file0\x00', 0x0, &(0x7f0000000000)={[{@user_xattr}, {@nodioread_nolock}, {@usrquota}]}, 0x1, 0x4bf, &(0x7f0000000a40)="$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") r4 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file1\x00', 0x42, 0x1ff) write(r4, &(0x7f0000000180)="7e7226ce9b4d692092ffa2b579f0ff5793012c9738a9be19ff3e69a683a0a1bbace0dc3853c661a4e1019e7a1f3af60350126cb99c5f3ace6f5616c00e0fb30b2832398fed6233b8632a001dd0a846cbb8a5d77e3208db486b055edb6ae7917f07ccf4b6811be57047aa17799359e733ec395940d1feb7a9ec2ddadb1ff61070c9c00f9db8e47f74a5271fa77b6e692e6ac97aaae883e5522f8e86c2403aec0ff8dee1cba5d40f0969470b9a2a95f6f22f9d4250809400ea8403a6540948", 0xfffffec6) r5 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./file1\x00', 0x105042, 0x1db) writev(r5, &(0x7f0000000540)=[{&(0x7f0000000100)="de", 0x1}], 0x1) syz_mount_image$ext4(&(0x7f00000000c0)='ext4\x00', &(0x7f0000000040)='./file0\x00', 0x11, &(0x7f0000000180)={[{@noquota}, {@stripe={'stripe', 0x3d, 0x6d}}, {@norecovery}, {@data_ordered}, {@abort}]}, 0x1, 0x60b, &(0x7f0000001b40)="$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") [ 68.768065][ T4656] Bluetooth: hci0: command tx timeout [ 68.826456][ T5321] loop0: detected capacity change from 0 to 2048 [ 68.839544][ T5321] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 68.866804][ T5321] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 68.872843][ T5321] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 68.880108][ T5321] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 68.889275][ T25] audit: type=1800 audit(1745976290.695:2): pid=5321 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 [ 69.257590][ T5305] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 69.502722][ T5321] [ 69.503786][ T5321] ============================================ [ 69.506136][ T5321] WARNING: possible recursive locking detected [ 69.508541][ T5321] 6.15.0-rc4-syzkaller-00040-g8bac8898fe39 #0 Not tainted [ 69.511171][ T5321] -------------------------------------------- [ 69.513529][ T5321] syz.0.0/5321 is trying to acquire lock: [ 69.515686][ T5321] ffff888044b19928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 69.519337][ T5321] [ 69.519337][ T5321] but task is already holding lock: [ 69.521989][ T5321] ffff888044b19928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 69.525811][ T5321] [ 69.525811][ T5321] other info that might help us debug this: [ 69.528703][ T5321] Possible unsafe locking scenario: [ 69.528703][ T5321] [ 69.531591][ T5321] CPU0 [ 69.532883][ T5321] ---- [ 69.534183][ T5321] lock(&sbi->s_alloc_mutex); [ 69.536046][ T5321] lock(&sbi->s_alloc_mutex); [ 69.537711][ T5321] [ 69.537711][ T5321] *** DEADLOCK *** [ 69.537711][ T5321] [ 69.540647][ T5321] May be due to missing lock nesting notation [ 69.540647][ T5321] [ 69.543657][ T5321] 5 locks held by syz.0.0/5321: [ 69.545431][ T5321] #0: ffff8880001afef8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x320 [ 69.548892][ T5321] #1: ffff88803df1c420 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x211/0xa90 [ 69.552195][ T5321] #2: ffff888052030f60 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 69.556060][ T5321] #3: ffff888052030d90 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x291/0x42a0 [ 69.559412][ T5321] #4: ffff888044b19928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 69.563103][ T5321] [ 69.563103][ T5321] stack backtrace: [ 69.565390][ T5321] CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted 6.15.0-rc4-syzkaller-00040-g8bac8898fe39 #0 PREEMPT(full) [ 69.565404][ T5321] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 69.565411][ T5321] Call Trace: [ 69.565417][ T5321] [ 69.565422][ T5321] dump_stack_lvl+0x189/0x250 [ 69.565441][ T5321] ? __pfx_dump_stack_lvl+0x10/0x10 [ 69.565454][ T5321] ? __pfx__printk+0x10/0x10 [ 69.565465][ T5321] ? print_lock_name+0xde/0x100 [ 69.565479][ T5321] print_deadlock_bug+0x28b/0x2a0 [ 69.565490][ T5321] validate_chain+0x1a3f/0x2140 [ 69.565498][ T5321] ? cgroup_rstat_updated+0x144/0xb50 [ 69.565514][ T5321] ? __pfx_cgroup_rstat_updated+0x10/0x10 [ 69.565529][ T5321] __lock_acquire+0xaac/0xd20 [ 69.565544][ T5321] ? udf_free_blocks+0x9e2/0x17f0 [ 69.565556][ T5321] lock_acquire+0x120/0x360 [ 69.565568][ T5321] ? udf_free_blocks+0x9e2/0x17f0 [ 69.565580][ T5321] ? sched_clock_cpu+0x74/0x430 [ 69.565594][ T5321] ? psi_task_switch+0x39e/0x6d0 [ 69.565603][ T5321] __mutex_lock+0x182/0xe80 [ 69.565664][ T5321] ? udf_free_blocks+0x9e2/0x17f0 [ 69.565680][ T5321] ? __lock_acquire+0xaac/0xd20 [ 69.565692][ T5321] ? udf_free_blocks+0x9e2/0x17f0 [ 69.565704][ T5321] ? __pfx___mutex_lock+0x10/0x10 [ 69.565723][ T5321] ? __pfx___might_resched+0x10/0x10 [ 69.565732][ T5321] ? fs_reclaim_acquire+0x7d/0x100 [ 69.565750][ T5321] udf_free_blocks+0x9e2/0x17f0 [ 69.565765][ T5321] ? bdev_getblk+0x77/0x670 [ 69.565779][ T5321] ? udf_get_fileshortad+0x6e/0x1b0 [ 69.565792][ T5321] ? __pfx_udf_free_blocks+0x10/0x10 [ 69.565808][ T5321] udf_delete_aext+0x4df/0xbc0 [ 69.565816][ T5321] ? udf_get_fileshortad+0xcb/0x1b0 [ 69.565830][ T5321] ? __pfx_udf_delete_aext+0x10/0x10 [ 69.565843][ T5321] udf_prealloc_blocks+0xb7e/0x10b0 [ 69.565856][ T5321] ? udf_get_filelongad+0x6e/0x1b0 [ 69.565868][ T5321] ? udf_current_aext+0x660/0xad0 [ 69.565883][ T5321] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 69.565899][ T5321] udf_map_block+0x1ddd/0x42a0 [ 69.565919][ T5321] ? __pfx_udf_map_block+0x10/0x10 [ 69.565932][ T5321] ? __pfx_mod_objcg_state+0x10/0x10 [ 69.565953][ T5321] ? do_raw_spin_unlock+0x4d/0x240 [ 69.565964][ T5321] __udf_get_block+0x52/0x250 [ 69.565980][ T5321] __block_write_begin_int+0x6b2/0x1900 [ 69.565995][ T5321] ? folio_add_lru+0x1b3/0x3d0 [ 69.566006][ T5321] ? __pfx_udf_get_block+0x10/0x10 [ 69.566020][ T5321] ? __pfx___block_write_begin_int+0x10/0x10 [ 69.566035][ T5321] ? __pfx_udf_get_block+0x10/0x10 [ 69.566048][ T5321] block_write_begin+0x8a/0x120 [ 69.566062][ T5321] ? udf_write_begin+0x7d/0x260 [ 69.566075][ T5321] udf_write_begin+0x100/0x260 [ 69.566089][ T5321] generic_perform_write+0x2c4/0x910 [ 69.566103][ T5321] ? __pfx_generic_perform_write+0x10/0x10 [ 69.566114][ T5321] ? file_update_time+0x416/0x490 [ 69.566128][ T5321] ? __generic_file_write_iter+0xf9/0x230 [ 69.566138][ T5321] ? udf_file_write_iter+0x1a3/0x6c0 [ 69.566152][ T5321] udf_file_write_iter+0x2d5/0x6c0 [ 69.566167][ T5321] vfs_write+0x548/0xa90 [ 69.566179][ T5321] ? __pfx_udf_file_write_iter+0x10/0x10 [ 69.566193][ T5321] ? __pfx_vfs_write+0x10/0x10 [ 69.566204][ T5321] ? __fget_files+0x2a/0x420 [ 69.566218][ T5321] ksys_write+0x145/0x250 [ 69.566228][ T5321] ? rcu_is_watching+0x15/0xb0 [ 69.566242][ T5321] ? __pfx_ksys_write+0x10/0x10 [ 69.566253][ T5321] ? do_syscall_64+0xba/0x210 [ 69.566266][ T5321] do_syscall_64+0xf6/0x210 [ 69.566277][ T5321] ? clear_bhb_loop+0x45/0xa0 [ 69.566289][ T5321] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 69.566299][ T5321] RIP: 0033:0x7f5becd8e969 [ 69.566311][ T5321] 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 [ 69.566320][ T5321] RSP: 002b:00007f5bedb2e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 69.566332][ T5321] RAX: ffffffffffffffda RBX: 00007f5becfb5fa0 RCX: 00007f5becd8e969 [ 69.566338][ T5321] RDX: 00000000fffffec6 RSI: 0000200000000180 RDI: 000000000000000a [ 69.566345][ T5321] RBP: 00007f5bece10ab1 R08: 0000000000000000 R09: 0000000000000000 [ 69.566351][ T5321] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 69.566357][ T5321] R13: 0000000000000000 R14: 00007f5becfb5fa0 R15: 00007fffbdd659f8 [ 69.566366][ T5321] [ 70.797687][ T4656] Bluetooth: hci0: command tx timeout [ 72.877690][ T4656] Bluetooth: hci0: command tx timeout [ 74.477608][ T5305] usb 5-1: unable to get BOS descriptor or descriptor too short [ 74.481718][ T5305] usb 5-1: unable to read config index 0 descriptor/start: -32 [ 74.484670][ T5305] usb 5-1: chopping to 0 config(s) [ 74.486617][ T5305] usb 5-1: can't read configurations, error -32 [ 74.617430][ T5305] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 74.747332][ T5305] usb 5-1: device descriptor read/64, error -32 [ 74.857647][ T5305] usb usb5-port1: attempt power cycle [ 74.957546][ T4656] Bluetooth: hci0: command tx timeout [ 75.197534][ T5305] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 75.218286][ T5305] usb 5-1: device descriptor read/8, error -32 [ 75.457376][ T5305] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 75.477796][ T5305] usb 5-1: device descriptor read/8, error -32 [ 75.587485][ T5305] usb usb5-port1: unable to enumerate USB device