program: syz_mount_image$udf(&(0x7f0000000180), &(0x7f0000000100)='./bus\x00', 0x1014494, &(0x7f00000002c0)={[{@iocharset={'iocharset', 0x3d, 'iso8859-4'}}, {@partition={'partition', 0x3d, 0x6}}, {@gid_forget}, {@session={'session', 0x3d, 0xfe8}}, {@longad}, {@anchor}, {@uid_forget}]}, 0x1, 0xc24, &(0x7f0000001480)="$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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$hid(0x0, 0x36, &(0x7f0000000140)={{0x12, 0x1, 0x250, 0x0, 0x0, 0x0, 0x40, 0x6cb, 0x2968, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x1, 0x2, 0x20, 0x5, [{{0x9, 0x4, 0x0, 0xfe, 0x1, 0x3, 0x1, 0x3, 0x0, {0x9, 0x21, 0x7, 0x1, 0x1, {0x22, 0x9f8}}, {{{0x9, 0x5, 0x81, 0x3, 0x40, 0x1, 0x80, 0xb5}}}}}]}}]}}, 0x0) creat(&(0x7f0000000000)='./bus\x00', 0x0) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cpuset.effective_cpus\x00', 0x275a, 0x0) [ 156.549294][ T5314] Bluetooth: hci0: command tx timeout [ 156.566057][ T1318] ieee802154 phy0 wpan0: encryption failed: -22 [ 156.582102][ T1318] ieee802154 phy1 wpan1: encryption failed: -22 [ 156.775576][ T5340] loop0: detected capacity change from 0 to 2048 [ 156.799831][ T5340] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 156.862485][ T5340] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 156.893388][ T5340] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 156.915363][ T5340] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 156.965817][ T26] audit: type=1800 audit(1750078437.713:2): pid=5340 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 [ 157.373380][ T4756] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 157.979681][ T5340] [ 157.991390][ T5340] ============================================ [ 157.994251][ T5340] WARNING: possible recursive locking detected [ 157.996672][ T5340] 6.16.0-rc2-syzkaller #0 Not tainted [ 157.998854][ T5340] -------------------------------------------- [ 158.005336][ T5340] syz.0.0/5340 is trying to acquire lock: [ 158.007854][ T5340] ffff8880404fad28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 158.016409][ T5340] [ 158.016409][ T5340] but task is already holding lock: [ 158.020602][ T5340] ffff8880404fad28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_new_block+0xfab/0x1ba0 [ 158.030464][ T5340] [ 158.030464][ T5340] other info that might help us debug this: [ 158.036547][ T5340] Possible unsafe locking scenario: [ 158.036547][ T5340] [ 158.043178][ T5340] CPU0 [ 158.046158][ T5340] ---- [ 158.048461][ T5340] lock(&sbi->s_alloc_mutex); [ 158.051850][ T5340] lock(&sbi->s_alloc_mutex); [ 158.055319][ T5340] [ 158.055319][ T5340] *** DEADLOCK *** [ 158.055319][ T5340] [ 158.062036][ T5340] May be due to missing lock nesting notation [ 158.062036][ T5340] [ 158.070509][ T5340] 4 locks held by syz.0.0/5340: [ 158.073307][ T5340] #0: ffff888043882428 (sb_writers#12){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 [ 158.080723][ T5340] #1: ffff888043fb8f60 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 158.089342][ T5340] #2: ffff888043fb8d90 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x291/0x42a0 [ 158.095383][ T5340] #3: ffff8880404fad28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_new_block+0xfab/0x1ba0 [ 158.099748][ T5340] [ 158.099748][ T5340] stack backtrace: [ 158.102309][ T5340] CPU: 0 UID: 0 PID: 5340 Comm: syz.0.0 Not tainted 6.16.0-rc2-syzkaller #0 PREEMPT(full) [ 158.102327][ T5340] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 158.102335][ T5340] Call Trace: [ 158.102343][ T5340] [ 158.102349][ T5340] dump_stack_lvl+0x189/0x250 [ 158.102520][ T5340] ? __pfx_dump_stack_lvl+0x10/0x10 [ 158.102550][ T5340] ? __pfx__printk+0x10/0x10 [ 158.102562][ T5340] ? trace_sched_exit_tp+0x38/0x120 [ 158.102596][ T5340] ? print_lock_name+0xde/0x100 [ 158.102610][ T5340] print_deadlock_bug+0x28b/0x2a0 [ 158.102646][ T5340] validate_chain+0x1a3f/0x2140 [ 158.102659][ T5340] ? __pfx___schedule+0x10/0x10 [ 158.102712][ T5340] __lock_acquire+0xab9/0xd20 [ 158.102731][ T5340] ? udf_free_blocks+0x9e2/0x17f0 [ 158.102744][ T5340] lock_acquire+0x120/0x360 [ 158.102760][ T5340] ? udf_free_blocks+0x9e2/0x17f0 [ 158.102771][ T5340] ? rcu_preempt_deferred_qs_irqrestore+0x851/0xc40 [ 158.102805][ T5340] __mutex_lock+0x182/0xe80 [ 158.102816][ T5340] ? udf_free_blocks+0x9e2/0x17f0 [ 158.102829][ T5340] ? __pfx_folio_mark_accessed+0x10/0x10 [ 158.102875][ T5340] ? __pfx_rcu_preempt_deferred_qs_irqrestore+0x10/0x10 [ 158.102891][ T5340] ? udf_free_blocks+0x9e2/0x17f0 [ 158.102902][ T5340] ? __pfx___mutex_lock+0x10/0x10 [ 158.102916][ T5340] ? __pfx___might_resched+0x10/0x10 [ 158.102935][ T5340] udf_free_blocks+0x9e2/0x17f0 [ 158.102948][ T5340] ? bdev_getblk+0x7b/0x690 [ 158.102963][ T5340] ? udf_get_fileshortad+0x6e/0x1b0 [ 158.102996][ T5340] ? __pfx_udf_free_blocks+0x10/0x10 [ 158.103013][ T5340] udf_delete_aext+0x4df/0xbc0 [ 158.103026][ T5340] ? udf_get_fileshortad+0x6e/0x1b0 [ 158.103045][ T5340] ? __pfx_udf_delete_aext+0x10/0x10 [ 158.103063][ T5340] udf_new_block+0x1404/0x1ba0 [ 158.103077][ T5340] ? bdev_getblk+0x7b/0x690 [ 158.103091][ T5340] ? udf_get_filelongad+0x6e/0x1b0 [ 158.103109][ T5340] ? __pfx_udf_new_block+0x10/0x10 [ 158.103118][ T5340] ? udf_current_aext+0x660/0xad0 [ 158.103136][ T5340] udf_map_block+0x12b1/0x42a0 [ 158.103156][ T5340] ? __pfx_udf_map_block+0x10/0x10 [ 158.103178][ T5340] ? do_raw_spin_unlock+0x4d/0x240 [ 158.103193][ T5340] __udf_get_block+0x52/0x250 [ 158.103207][ T5340] __block_write_begin_int+0x6b2/0x1900 [ 158.103224][ T5340] ? folio_add_lru+0x1b2/0x3d0 [ 158.103239][ T5340] ? __pfx_udf_get_block+0x10/0x10 [ 158.103252][ T5340] ? __pfx___block_write_begin_int+0x10/0x10 [ 158.103266][ T5340] ? __pfx_udf_get_block+0x10/0x10 [ 158.103275][ T5340] block_write_begin+0x8a/0x120 [ 158.103289][ T5340] ? udf_write_begin+0x7d/0x260 [ 158.103301][ T5340] udf_write_begin+0x100/0x260 [ 158.103314][ T5340] generic_perform_write+0x2c4/0x910 [ 158.103340][ T5340] ? __pfx_generic_perform_write+0x10/0x10 [ 158.103357][ T5340] ? generic_file_direct_write+0x385/0x3e0 [ 158.103372][ T5340] ? file_update_time+0x416/0x490 [ 158.103402][ T5340] __generic_file_write_iter+0x1ae/0x230 [ 158.103419][ T5340] udf_file_write_iter+0x2d5/0x6c0 [ 158.103441][ T5340] iter_file_splice_write+0x937/0x1000 [ 158.103460][ T5340] ? __pfx_iter_file_splice_write+0x10/0x10 [ 158.103472][ T5340] ? rcu_read_lock_any_held+0xb3/0x120 [ 158.103487][ T5340] ? direct_splice_actor+0x10c/0x160 [ 158.103499][ T5340] ? __pfx_iter_file_splice_write+0x10/0x10 [ 158.103511][ T5340] direct_splice_actor+0x101/0x160 [ 158.103525][ T5340] splice_direct_to_actor+0x5a5/0xcc0 [ 158.103541][ T5340] ? __pfx_direct_splice_actor+0x10/0x10 [ 158.103553][ T5340] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 158.103565][ T5340] ? __pfx_aa_file_perm+0x10/0x10 [ 158.103599][ T5340] do_splice_direct+0x181/0x270 [ 158.103612][ T5340] ? __pfx_do_splice_direct+0x10/0x10 [ 158.103625][ T5340] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 158.103640][ T5340] ? rw_verify_area+0x258/0x650 [ 158.103661][ T5340] do_sendfile+0x4da/0x7e0 [ 158.103677][ T5340] ? __pfx_do_sendfile+0x10/0x10 [ 158.103691][ T5340] ? rcu_is_watching+0x15/0xb0 [ 158.103710][ T5340] ? __rseq_handle_notify_resume+0x37e/0x11f0 [ 158.103731][ T5340] __se_sys_sendfile64+0x13e/0x190 [ 158.103750][ T5340] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 158.103764][ T5340] ? rcu_is_watching+0x15/0xb0 [ 158.103782][ T5340] ? do_syscall_64+0xbe/0x3b0 [ 158.103796][ T5340] do_syscall_64+0xfa/0x3b0 [ 158.103807][ T5340] ? lockdep_hardirqs_on+0x9c/0x150 [ 158.103825][ T5340] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 158.103837][ T5340] ? clear_bhb_loop+0x60/0xb0 [ 158.103851][ T5340] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 158.103865][ T5340] RIP: 0033:0x7f3812d8e929 [ 158.103893][ T5340] 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 [ 158.103904][ T5340] RSP: 002b:00007f3813bbf038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 158.103919][ T5340] RAX: ffffffffffffffda RBX: 00007f3812fb5fa0 RCX: 00007f3812d8e929 [ 158.103928][ T5340] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 [ 158.103935][ T5340] RBP: 00007f3812e10b39 R08: 0000000000000000 R09: 0000000000000000 [ 158.103942][ T5340] R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000 [ 158.103951][ T5340] R13: 0000000000000000 R14: 00007f3812fb5fa0 R15: 00007fffabcc8238 [ 158.103962][ T5340] [ 158.600626][ T5314] Bluetooth: hci0: command tx timeout [ 160.681088][ T5314] Bluetooth: hci0: command tx timeout [ 162.600740][ T4756] usb 5-1: unable to get BOS descriptor or descriptor too short [ 162.605008][ T4756] usb 5-1: unable to read config index 0 descriptor/start: -32 [ 162.609880][ T4756] usb 5-1: chopping to 0 config(s) [ 162.620437][ T4756] usb 5-1: can't read configurations, error -32 [ 162.750577][ T4756] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 162.882556][ T4756] usb 5-1: device descriptor read/64, error -32 [ 162.991349][ T4756] usb usb5-port1: attempt power cycle [ 163.330543][ T4756] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 163.350832][ T4756] usb 5-1: device descriptor read/8, error -32