program: syz_mount_image$udf(&(0x7f0000000180), &(0x7f0000000100)='./bus\x00', 0x1014494, &(0x7f0000000600)=ANY=[@ANYBLOB="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"], 0xfe, 0xc24, &(0x7f0000001480)="$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") r0 = open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x0) bpf$PROG_LOAD(0x5, 0x0, 0x0) r1 = socket$inet(0x2, 0x80001, 0x84) getsockopt$inet_sctp_SCTP_MAX_BURST(r1, 0x84, 0x14, 0x0, 0x0) sendmsg(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2c}, 0x4000845) io_uring_enter(0xffffffffffffffff, 0x2219, 0x7721, 0x16, 0x0, 0x0) ftruncate(r0, 0x2007ffc) sendfile(r0, r0, 0x0, 0x800000009) r2 = open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x0) mmap(&(0x7f0000ffe000/0x2000)=nil, 0x2000, 0x0, 0x13, 0xffffffffffffffff, 0x0) r3 = open(&(0x7f0000000080)='./bus\x00', 0x107382, 0x1d0) ftruncate(r3, 0x2007ffb) sendfile(r2, r3, 0x0, 0x1000000201005) syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000380)=ANY=[@ANYBLOB="1201500200000040"], 0x0) r4 = open(&(0x7f0000000180)='./bus\x00', 0x14937e, 0x111) pwrite64(r4, &(0x7f00000020c0)="2dfa", 0x2, 0x8) [ 85.859478][ T4668] Bluetooth: hci0: command tx timeout [ 85.995445][ T5326] loop0: detected capacity change from 0 to 2048 [ 86.026094][ T5326] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 86.070171][ T5326] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 86.098939][ T5326] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 86.112479][ T5326] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 86.162906][ T25] audit: type=1800 audit(1762597235.408:2): pid=5326 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 [ 86.488067][ T56] cfg80211: failed to load regulatory.db [ 86.551619][ T5318] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 86.992074][ T5326] [ 86.993333][ T5326] ============================================ [ 87.000469][ T5326] WARNING: possible recursive locking detected [ 87.003175][ T5326] syzkaller #0 Not tainted [ 87.005235][ T5326] -------------------------------------------- [ 87.007877][ T5326] syz.0.0/5326 is trying to acquire lock: [ 87.010365][ T5326] ffff8880002eb128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 87.014851][ T5326] [ 87.014851][ T5326] but task is already holding lock: [ 87.018344][ T5326] ffff8880002eb128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 87.023011][ T5326] [ 87.023011][ T5326] other info that might help us debug this: [ 87.026528][ T5326] Possible unsafe locking scenario: [ 87.026528][ T5326] [ 87.029905][ T5326] CPU0 [ 87.031644][ T5326] ---- [ 87.033400][ T5326] lock(&sbi->s_alloc_mutex); [ 87.035901][ T5326] lock(&sbi->s_alloc_mutex); [ 87.038225][ T5326] [ 87.038225][ T5326] *** DEADLOCK *** [ 87.038225][ T5326] [ 87.041753][ T5326] May be due to missing lock nesting notation [ 87.041753][ T5326] [ 87.045260][ T5326] 4 locks held by syz.0.0/5326: [ 87.047547][ T5326] #0: ffff8880432be420 (sb_writers#12){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 [ 87.052263][ T5326] #1: ffff888012728f40 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 87.057491][ T5326] #2: ffff888012728d70 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x283/0x45f0 [ 87.062191][ T5326] #3: ffff8880002eb128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 87.066987][ T5326] [ 87.066987][ T5326] stack backtrace: [ 87.069660][ T5326] CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 87.069680][ T5326] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 87.069688][ T5326] Call Trace: [ 87.069700][ T5326] [ 87.069708][ T5326] dump_stack_lvl+0x189/0x250 [ 87.069734][ T5326] ? __pfx_dump_stack_lvl+0x10/0x10 [ 87.069751][ T5326] ? __pfx__printk+0x10/0x10 [ 87.069766][ T5326] ? print_lock_name+0xde/0x100 [ 87.069780][ T5326] print_deadlock_bug+0x28b/0x2a0 [ 87.069798][ T5326] validate_chain+0x1a3f/0x2140 [ 87.069818][ T5326] __lock_acquire+0xab9/0xd20 [ 87.069832][ T5326] ? udf_free_blocks+0x9e2/0x17f0 [ 87.069851][ T5326] lock_acquire+0x120/0x360 [ 87.069864][ T5326] ? udf_free_blocks+0x9e2/0x17f0 [ 87.069885][ T5326] __mutex_lock+0x187/0x1350 [ 87.069979][ T5326] ? udf_free_blocks+0x9e2/0x17f0 [ 87.069997][ T5326] ? folio_mark_accessed+0x42c/0x8b0 [ 87.070018][ T5326] ? __pfx_folio_mark_accessed+0x10/0x10 [ 87.070037][ T5326] ? udf_free_blocks+0x9e2/0x17f0 [ 87.070054][ T5326] ? __pfx___mutex_lock+0x10/0x10 [ 87.070074][ T5326] ? __pfx___might_resched+0x10/0x10 [ 87.070087][ T5326] ? fs_reclaim_acquire+0x7d/0x100 [ 87.070106][ T5326] udf_free_blocks+0x9e2/0x17f0 [ 87.070127][ T5326] ? udf_get_fileshortad+0x6e/0x1b0 [ 87.070145][ T5326] ? udf_current_aext+0x698/0xb00 [ 87.070158][ T5326] ? __pfx_udf_free_blocks+0x10/0x10 [ 87.070182][ T5326] udf_delete_aext+0x4df/0xbc0 [ 87.070199][ T5326] ? __pfx_udf_delete_aext+0x10/0x10 [ 87.070215][ T5326] udf_prealloc_blocks+0xb7e/0x10b0 [ 87.070247][ T5326] ? __pfx_udf_new_block+0x10/0x10 [ 87.070267][ T5326] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 87.070288][ T5326] ? udf_map_block+0x1662/0x45f0 [ 87.070300][ T5326] udf_map_block+0x1f70/0x45f0 [ 87.070320][ T5326] ? __pfx_udf_map_block+0x10/0x10 [ 87.070343][ T5326] ? do_raw_spin_unlock+0x4d/0x240 [ 87.070362][ T5326] __udf_get_block+0x52/0x250 [ 87.070375][ T5326] __block_write_begin_int+0x6b5/0x1900 [ 87.070390][ T5326] ? __pfx_workingset_update_node+0x10/0x10 [ 87.070407][ T5326] ? __pfx_udf_get_block+0x10/0x10 [ 87.070420][ T5326] ? __pfx___block_write_begin_int+0x10/0x10 [ 87.070436][ T5326] ? __pfx_udf_get_block+0x10/0x10 [ 87.070446][ T5326] block_write_begin+0x8a/0x120 [ 87.070460][ T5326] ? udf_write_begin+0x92/0x270 [ 87.070471][ T5326] udf_write_begin+0x115/0x270 [ 87.070483][ T5326] generic_perform_write+0x2c5/0x900 [ 87.070500][ T5326] ? __pfx_generic_perform_write+0x10/0x10 [ 87.070513][ T5326] ? generic_file_direct_write+0x385/0x3e0 [ 87.070524][ T5326] ? file_update_time+0x2da/0x490 [ 87.070539][ T5326] __generic_file_write_iter+0x1ae/0x230 [ 87.070552][ T5326] udf_file_write_iter+0x2d5/0x6c0 [ 87.070573][ T5326] iter_file_splice_write+0x975/0x10e0 [ 87.070598][ T5326] ? __pfx_iter_file_splice_write+0x10/0x10 [ 87.070614][ T5326] ? rcu_read_lock_any_held+0xb3/0x120 [ 87.070631][ T5326] ? direct_splice_actor+0x10c/0x160 [ 87.070650][ T5326] ? __pfx_iter_file_splice_write+0x10/0x10 [ 87.070667][ T5326] direct_splice_actor+0x101/0x160 [ 87.070685][ T5326] splice_direct_to_actor+0x5a8/0xcc0 [ 87.070706][ T5326] ? __pfx_direct_splice_actor+0x10/0x10 [ 87.070722][ T5326] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 87.070740][ T5326] do_splice_direct+0x181/0x270 [ 87.070764][ T5326] ? __pfx_do_splice_direct+0x10/0x10 [ 87.070780][ T5326] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 87.070798][ T5326] ? rw_verify_area+0x255/0x4d0 [ 87.070814][ T5326] do_sendfile+0x4da/0x7e0 [ 87.070836][ T5326] ? __pfx_do_sendfile+0x10/0x10 [ 87.070853][ T5326] ? __rseq_handle_notify_resume+0x384/0x1220 [ 87.070873][ T5326] ? __se_sys_futex+0x36f/0x400 [ 87.070893][ T5326] __se_sys_sendfile64+0x13e/0x190 [ 87.070913][ T5326] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 87.070940][ T5326] ? do_syscall_64+0xbe/0xfa0 [ 87.070960][ T5326] do_syscall_64+0xfa/0xfa0 [ 87.070976][ T5326] ? lockdep_hardirqs_on+0x9c/0x150 [ 87.070993][ T5326] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.071006][ T5326] ? clear_bhb_loop+0x60/0xb0 [ 87.071020][ T5326] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.071034][ T5326] RIP: 0033:0x7f197658f6c9 [ 87.071065][ T5326] 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 [ 87.071077][ T5326] RSP: 002b:00007f19774df038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 87.071093][ T5326] RAX: ffffffffffffffda RBX: 00007f19767e5fa0 RCX: 00007f197658f6c9 [ 87.071101][ T5326] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 [ 87.071110][ T5326] RBP: 00007f1976611f91 R08: 0000000000000000 R09: 0000000000000000 [ 87.071118][ T5326] R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000 [ 87.071126][ T5326] R13: 00007f19767e6038 R14: 00007f19767e5fa0 R15: 00007ffc01e522d8 [ 87.071141][ T5326] [ 87.919309][ T4668] Bluetooth: hci0: command tx timeout [ 89.999166][ T4668] Bluetooth: hci0: command tx timeout [ 91.758785][ T5318] usb 5-1: unable to get BOS descriptor or descriptor too short [ 91.762248][ T5318] usb 5-1: no configurations [ 91.764364][ T5318] usb 5-1: can't read configurations, error -22 [ 91.889359][ T5318] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 92.018776][ T5318] usb 5-1: device descriptor read/64, error -32 [ 92.078862][ T4668] Bluetooth: hci0: command tx timeout [ 92.129037][ T5318] usb usb5-port1: attempt power cycle [ 92.468678][ T5318] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 92.489199][ T5318] usb 5-1: device descriptor read/8, error -32 [ 92.728811][ T5318] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 92.749186][ T5318] usb 5-1: device descriptor read/8, error -32