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', 0x107382, 0x1d0) ftruncate(r2, 0x2007ffb) sendfile(r1, r2, 0x0, 0x1000000201005) syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000380)=ANY=[@ANYBLOB="1201500200000040"], 0x0) truncate(&(0x7f00000013c0)='./file1\x00', 0x0) creat(&(0x7f0000000000)='./bus\x00', 0x0) mkdir(&(0x7f00000000c0)='./file0\x00', 0x0) name_to_handle_at(0xffffffffffffff9c, &(0x7f00000001c0)='./file0\x00', &(0x7f0000000380)=@OVL_FILEID_V0={0x81, 0xfb, {0x0, 0xfb, 0x81, 0x1, 0x17, "3f52485a6f5fa07bd2dfa33f520e5842", "be0f8ea43694add2766ace568848ac9986de7f22c96d32b9c19808caa539ac904d93a49fd9d5244729830667818be8b9384ac806a84a11ed013aff6bc3b815f67138989e04c5e319f7a079a0dec7f47abe50f4be3b7997e1c83f60adc48ead461ed992c56b24aff56faaddf3"}}, 0x0, 0x600) r3 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cgroup.controllers\x00', 0x275a, 0x0) write$binfmt_script(r3, &(0x7f0000000180), 0xfea7) getpeername$unix(r3, &(0x7f0000000200)=@abs, &(0x7f0000000080)=0x6e) fanotify_init(0x0, 0x141001) r4 = socket$nl_generic(0x10, 0x3, 0x10) open$dir(&(0x7f0000000000)='./file0\x00', 0x252c80, 0x20) r5 = syz_genetlink_get_family_id$ethtool(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$ETHTOOL_MSG_LINKINFO_SET(r4, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f00000003c0)=ANY=[@ANYBLOB, @ANYRES16=r5, @ANYBLOB="01000400000000000000030000001800018014000200776c616e3000"/38], 0x2c}, 0x1, 0x0, 0x0, 0x1}, 0x40004040) [ 85.096885][ T5300] Bluetooth: hci0: command tx timeout [ 85.228991][ T5324] loop0: detected capacity change from 0 to 2048 [ 85.252666][ T5324] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 85.268553][ T5324] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 85.284761][ T5324] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 85.291350][ T5324] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 85.304254][ T25] audit: type=1800 audit(1762896671.938:2): pid=5324 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 [ 85.666267][ T9] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 85.868212][ T5324] [ 85.869388][ T5324] ============================================ [ 85.872034][ T5324] WARNING: possible recursive locking detected [ 85.874835][ T5324] syzkaller #0 Not tainted [ 85.876830][ T5324] -------------------------------------------- [ 85.879295][ T5324] syz.0.0/5324 is trying to acquire lock: [ 85.881822][ T5324] ffff88803371ad28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 85.886177][ T5324] [ 85.886177][ T5324] but task is already holding lock: [ 85.889229][ T5324] ffff88803371ad28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 85.893612][ T5324] [ 85.893612][ T5324] other info that might help us debug this: [ 85.897375][ T5324] Possible unsafe locking scenario: [ 85.897375][ T5324] [ 85.900693][ T5324] CPU0 [ 85.902191][ T5324] ---- [ 85.903601][ T5324] lock(&sbi->s_alloc_mutex); [ 85.905797][ T5324] lock(&sbi->s_alloc_mutex); [ 85.908031][ T5324] [ 85.908031][ T5324] *** DEADLOCK *** [ 85.908031][ T5324] [ 85.912828][ T5324] May be due to missing lock nesting notation [ 85.912828][ T5324] [ 85.916801][ T5324] 5 locks held by syz.0.0/5324: [ 85.918964][ T5324] #0: ffff8880425fb9b8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x320 [ 85.922911][ T5324] #1: ffff888036156420 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x211/0xb30 [ 85.926811][ T5324] #2: ffff88804337a230 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 85.931453][ T5324] #3: ffff88804337a060 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x283/0x45f0 [ 85.935933][ T5324] #4: ffff88803371ad28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 85.939922][ T5324] [ 85.939922][ T5324] stack backtrace: [ 85.942556][ T5324] CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.942578][ T5324] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.942586][ T5324] Call Trace: [ 85.942594][ T5324] [ 85.942599][ T5324] dump_stack_lvl+0x189/0x250 [ 85.942622][ T5324] ? __pfx_dump_stack_lvl+0x10/0x10 [ 85.942638][ T5324] ? __pfx__printk+0x10/0x10 [ 85.942650][ T5324] ? print_lock_name+0xde/0x100 [ 85.942661][ T5324] print_deadlock_bug+0x28b/0x2a0 [ 85.942677][ T5324] validate_chain+0x1a3f/0x2140 [ 85.942694][ T5324] __lock_acquire+0xab9/0xd20 [ 85.942706][ T5324] ? udf_free_blocks+0x9e2/0x17f0 [ 85.942720][ T5324] lock_acquire+0x120/0x360 [ 85.942731][ T5324] ? udf_free_blocks+0x9e2/0x17f0 [ 85.942751][ T5324] __mutex_lock+0x187/0x1350 [ 85.942813][ T5324] ? udf_free_blocks+0x9e2/0x17f0 [ 85.942829][ T5324] ? folio_mark_accessed+0x42c/0x8b0 [ 85.942848][ T5324] ? __pfx_folio_mark_accessed+0x10/0x10 [ 85.942865][ T5324] ? udf_free_blocks+0x9e2/0x17f0 [ 85.942886][ T5324] ? __pfx___mutex_lock+0x10/0x10 [ 85.942906][ T5324] ? __pfx___might_resched+0x10/0x10 [ 85.942918][ T5324] ? fs_reclaim_acquire+0x7d/0x100 [ 85.942938][ T5324] udf_free_blocks+0x9e2/0x17f0 [ 85.942955][ T5324] ? udf_get_fileshortad+0x6e/0x1b0 [ 85.942971][ T5324] ? udf_current_aext+0x698/0xb00 [ 85.942981][ T5324] ? __pfx_udf_free_blocks+0x10/0x10 [ 85.943001][ T5324] udf_delete_aext+0x4df/0xbc0 [ 85.943015][ T5324] ? __pfx_udf_delete_aext+0x10/0x10 [ 85.943027][ T5324] udf_prealloc_blocks+0xb7e/0x10b0 [ 85.943045][ T5324] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 85.943064][ T5324] udf_map_block+0x1f70/0x45f0 [ 85.943085][ T5324] ? __pfx_udf_map_block+0x10/0x10 [ 85.943103][ T5324] ? do_raw_spin_unlock+0x4d/0x240 [ 85.943118][ T5324] __udf_get_block+0x52/0x250 [ 85.943130][ T5324] __block_write_begin_int+0x6b5/0x1900 [ 85.943142][ T5324] ? __pfx_workingset_update_node+0x10/0x10 [ 85.943155][ T5324] ? __pfx_udf_get_block+0x10/0x10 [ 85.943170][ T5324] ? __pfx___block_write_begin_int+0x10/0x10 [ 85.943187][ T5324] ? __pfx_udf_get_block+0x10/0x10 [ 85.943200][ T5324] block_write_begin+0x8a/0x120 [ 85.943211][ T5324] ? udf_write_begin+0x92/0x270 [ 85.943222][ T5324] udf_write_begin+0x115/0x270 [ 85.943232][ T5324] generic_perform_write+0x2c5/0x900 [ 85.943246][ T5324] ? __pfx_generic_perform_write+0x10/0x10 [ 85.943256][ T5324] ? file_update_time+0x2da/0x490 [ 85.943268][ T5324] ? __generic_file_write_iter+0xf9/0x230 [ 85.943278][ T5324] ? udf_file_write_iter+0x1a3/0x6c0 [ 85.943297][ T5324] udf_file_write_iter+0x2d5/0x6c0 [ 85.943315][ T5324] vfs_write+0x5c9/0xb30 [ 85.943328][ T5324] ? __pfx_udf_file_write_iter+0x10/0x10 [ 85.943345][ T5324] ? __pfx_vfs_write+0x10/0x10 [ 85.943359][ T5324] ? __fget_files+0x2a/0x420 [ 85.943375][ T5324] ksys_write+0x145/0x250 [ 85.943392][ T5324] ? __pfx_ksys_write+0x10/0x10 [ 85.943406][ T5324] ? do_syscall_64+0xbe/0xfa0 [ 85.943421][ T5324] do_syscall_64+0xfa/0xfa0 [ 85.943434][ T5324] ? lockdep_hardirqs_on+0x9c/0x150 [ 85.943449][ T5324] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.943460][ T5324] ? clear_bhb_loop+0x60/0xb0 [ 85.943471][ T5324] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.943482][ T5324] RIP: 0033:0x7f56fe38f6c9 [ 85.943493][ T5324] 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 [ 85.943503][ T5324] RSP: 002b:00007f56ff17c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 85.943529][ T5324] RAX: ffffffffffffffda RBX: 00007f56fe5e5fa0 RCX: 00007f56fe38f6c9 [ 85.943540][ T5324] RDX: 000000000000fea7 RSI: 0000200000000180 RDI: 0000000000000009 [ 85.943548][ T5324] RBP: 00007f56fe411f91 R08: 0000000000000000 R09: 0000000000000000 [ 85.943555][ T5324] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.943563][ T5324] R13: 00007f56fe5e6038 R14: 00007f56fe5e5fa0 R15: 00007fff6ad18e58 [ 85.943575][ T5324] [ 86.526687][ T55] cfg80211: failed to load regulatory.db [ 87.166389][ T5300] Bluetooth: hci0: command tx timeout [ 89.246341][ T5300] Bluetooth: hci0: command tx timeout [ 90.846279][ T9] usb 5-1: unable to get BOS descriptor or descriptor too short [ 90.849525][ T9] usb 5-1: no configurations [ 90.851458][ T9] usb 5-1: can't read configurations, error -22 [ 90.976128][ T9] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 91.106209][ T9] usb 5-1: device descriptor read/64, error -32 [ 91.216290][ T9] usb usb5-port1: attempt power cycle [ 91.326337][ T5300] Bluetooth: hci0: command tx timeout [ 91.556170][ T9] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 91.576456][ T9] usb 5-1: device descriptor read/8, error -32 [ 91.816168][ T9] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 91.836536][ T9] usb 5-1: device descriptor read/8, error -32 [ 91.946282][ T9] usb usb5-port1: unable to enumerate USB device