program: syz_mount_image$udf(&(0x7f0000000180), &(0x7f0000000100)='./bus\x00', 0x1014494, &(0x7f00000002c0)={[{@iocharset={'iocharset', 0x3d, 'iso8859-4'}}, {@partition={'partition', 0x3d, 0x6}}, {@gid_forget}, {@session={'session', 0x3d, 0xfe8}}, {@longad}, {@anchor}, {@uid_forget}]}, 0x1, 0xc24, &(0x7f0000001480)="$eJzs3UFsHNd9B+D/Gy5Fym4rJk5Uu42LTVukMmO5sqSYilW4q5pmG0CWiVDMLQBX5EpdmFoSJNXIRtrQvfTQQ4Ci6CEnAq1RIEUDoymCHtnWBZKLD0VOPREtbARFD2wRIKeAxcy+lZY0ZcmmSFH299nUbznz3ux7b5YzkqA3LwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAiN976cKpZ9ODbgUAcJAuTX311Gn3fwD4RLnsz/8AAAAAAAAAAAAAAHDYpSjisUixeGkzzVTfdw1fbHdu3Jwen9i92tFU1Ryoypdfw8+ePnP2S8+NnevlB9e/356IV6YuX6i/uHB9cam1vNyaq0932rMLc617PsJe6+80Wg1A/fqrN+auXl2un37mzLbdN0feG3r0+Mj5sadOPtkrOz0+MTHVV6Y2+JHf/X3uNMPjSBRxMlI8/b2fpGZEFLH3sbjLZ2e/Ha06MVp1Ynp8ourIfLvZWSl3TvYGooio91Vq9MboAM7FnjQiVsvmlw0eLbs3tdhcal6Zb9Unm0sr7ZX2QmcydVtb9qceRZxLEWsRsTH0/sMNRhG1SPGdY5vpSkQM9Mbhi9XE4Du3o9jHPt6Dsp31wYi14iE4Z4fYUBTxcqT46dtFzJZjlr/iCxEvl/mDiDfLfCEilR+MsxHv7vI54uFUiyL+vDz/5zfTXHU96F1XLn6t/pXO1YW+sr3rykN/fzhIh/zaNBxFNKsr/mb66L/ZAQAAAAAAAAAAAAAAAOB+OxpFPBEpXvr3P6rmFUc1L/3Y+bHfH/nF/jnjj9/lOGXZZyJitbi3OblH8hTiyTSZ0gOeS/xJNhxF/HGe//fGg24MAAAAAAAAAAAAAAAAAADAJ9yPI8Xz75xIa9G/pni7c61+uXllvrsqbG/t396a6VtbW1v11M1GzpmcqznXcq7n3MgZRa6fs5FzJudqzrWc6zk3csZArp+zkXMm52rOtZzrOTdyRi3Xz9nIOZNzNedazvWcGznjkKzdCwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADwcVJEET+PFN/+xmaKFBGNiJno5vpQrwwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA8CANpSK+Hynqf9C4ta0WEan6v+tE+cvZaBwp89PRGCvzhWhcyNmsstZ44wG0n70ZTEX8KFIMDb9164Tn8z/Y/e7WxyDe/Obt736l1s2B3s6R94YePX7s/NjErz1+p9dptwaMXmx3btysT49PTEz1ba7ld/9037aR/L7F/ek6EbH82uuvNufnW0ufmBdFHIpmPKgXte6LWhyS9hzUi3y9il12FYfhp6BxWAaq9+IBX5g4EOX9/91I8dvv/Efvht+7//9C97tbd/j42Z/cvv8/v/NA+3T/f6xv2/P5dyODtYjhleuLg8cjhpdfe/1k+3rzWutaq3P21Kkvj419+cypwSMRw1fb862+V3seKgAAAAAAAAAAAAAAAICDlYr43UjR/NFmqkfEzWq+1sj5sadOPjkQA9V8q23ztl6Zunyh/uLC9cWl1vJya64+3WnPLsy17vXthqvpXtPjE/vSmbs6us/tPzr84sLia0vta3+4suv+R4YvXFleWWrO7r47jkYR0ejfMlo1eHp8omr0fLvZqapO7jqZ7sMbTEX8Z6SYPVs/0tuW5//tnOG/bf7/6s4D7dP8v0/1bSvfM6UifhYpfusvHo/PV+18JN43Zrnc30SK0XOfy+XiSFmu14bucwW6MwPLsv8bKf7h59vL9uZDPna77LP3Oq4Pi/L8H4sU3/+z78av523bn/+w+/l/ZOeB9un8f6Zv2yPbnlew566Tz//JSPHCY2/Fb+RtH/T8jyK2tra+FXEiF771fI59Ov+f7ds2Et33/c37130AAAAAAAAAAICH1mAq4m8jxZMTtfRc3nYv//5vbueB9unff/1y37a5A1qvaM+DCgAAAACHxGAq4seR4trKW7fmUG+f/903//N3bq+9Pp527K3+nu+XqucG3M+//+s3kt93Zu/dBgAAAAAAAAAAAAAAAAAAgEMlpSKey+upz9xlPfX1SPHSfz+dy6XjZbneOvAj1a/DlxY6Jy/Mzy/MNleaV+Zb9anF5myrrPuZSLH515/LdYtqffXP57rdNd6Ht3prsS9Fiom/65XtrsXeW5u8ux54dy32suynIsV//f32sr11rD97u+zpsuxfRYqv/9PuZY/fLnumLPvdSPHDr9d7ZR8py/aej9p9JulwLeZbz8wuzL/vUagAAAAAAAAAAAAAAAAAAADwYQ2mIv40UvzP9bVYrab9v3FrV85ab8Ob3+xb73+Hm9U6/yPV+v93ev1R1v8fuS+9BAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAh0uKIl6PFIuXNtP6UPl91/DFdufGzenxid2rHU1VzYGqfPk1/OzpM2e/9NzYuV5+cP377Yl4ZeryhfqLC9cXl1rLy625+nSnPbsw17rnI+y1/u2h6xqtBqB+/dUbc1evLtdPP3Nm2+6bI+8NPXp85PzYUyef7JWdHp+YmOorUxv8EO/+oRp325Eo4i8jxdPf+0n656GIIvY+Fnf57Oy3o1UnRqtOTI9PVB2Zbzc7K+XOyd5AFBH1vkqN3hgdwLnYk0bEatn8ssGjZfemFptLzSvzrfpkc2mlvdJe6EymbmvL/tSjiHMpYi0iNob6D3QkZxGvRorvHNtM/zIUMdAbhy9emvrqqdN3bkexr728i29V7awPRqwVD8E5O8SGooh/jBQ/fftE/OtQRC26X/GFiJfL/EHEm2W+EJHKD8bZiHeHHnSruV9qUcT/lef//GZ6eyii+pGprisXv1b/SufqQl/Z3nVl5/1hKyIeqvvDQTrk16bhKOKH1RV/M/2bn2sAAAAAAAAAAAAAAACAQ6SIX40Uz79zIlXzg2/NKW53rtUvN6/Md6f19eb+9eZMb21tbdVTNxs5Z3Ku5lzLuZ5zI2cUuX7ORs6ZnKs513Ku59zIGQO5fs5GzpmcqznXcq7n3MgZtVw/ZyPnTM7VnGs513Nu5IxDMncPAAAAAAAAAAAAAAAAAAD4eCmq/1J8+xubaWuou770THRz3XqgH3v/HwAA//9wn/vk") r0 = open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x0) ftruncate(r0, 0x2007ffc) sendfile(r0, r0, 0x0, 0x800000009) r1 = syz_open_procfs(0x0, &(0x7f0000000180)='timerslack_ns\x00') read$FUSE(r1, &(0x7f00000018c0)={0x2020}, 0x2020) r2 = open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x0) r3 = open(&(0x7f0000000080)='./bus\x00', 0x185102, 0x0) ftruncate(r3, 0x2007ffb) sendfile(r2, r3, 0x0, 0x1000000201005) syz_usb_connect$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) [ 72.836719][ T4673] Bluetooth: hci0: command tx timeout [ 73.015110][ T5324] loop0: detected capacity change from 0 to 2048 [ 73.097476][ T5324] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 73.130030][ T5324] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 73.184560][ T5324] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 73.192376][ T5324] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 73.268331][ T25] audit: type=1800 audit(1750122637.135:2): 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 [ 73.713548][ T10] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 74.400764][ T5324] [ 74.417019][ T5324] ============================================ [ 74.429162][ T5324] WARNING: possible recursive locking detected [ 74.440948][ T5324] 6.16.0-rc2-syzkaller-00024-g9afe652958c3 #0 Not tainted [ 74.449890][ T5324] -------------------------------------------- [ 74.452684][ T5324] syz.0.0/5324 is trying to acquire lock: [ 74.457967][ T5324] ffff88803fe9b528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 74.462129][ T5324] [ 74.462129][ T5324] but task is already holding lock: [ 74.473755][ T5324] ffff88803fe9b528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 74.483770][ T5324] [ 74.483770][ T5324] other info that might help us debug this: [ 74.495676][ T5324] Possible unsafe locking scenario: [ 74.495676][ T5324] [ 74.507612][ T5324] CPU0 [ 74.509241][ T5324] ---- [ 74.517123][ T5324] lock(&sbi->s_alloc_mutex); [ 74.522939][ T5324] lock(&sbi->s_alloc_mutex); [ 74.526756][ T5324] [ 74.526756][ T5324] *** DEADLOCK *** [ 74.526756][ T5324] [ 74.530408][ T5324] May be due to missing lock nesting notation [ 74.530408][ T5324] [ 74.548244][ T5324] 4 locks held by syz.0.0/5324: [ 74.552666][ T5324] #0: ffff888035f5c428 (sb_writers#12){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 [ 74.565643][ T5324] #1: ffff888052c4cf60 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 74.577666][ T5324] #2: ffff888052c4cd90 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x291/0x42a0 [ 74.588061][ T5324] #3: ffff88803fe9b528 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 74.600699][ T5324] [ 74.600699][ T5324] stack backtrace: [ 74.610336][ T5324] CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.16.0-rc2-syzkaller-00024-g9afe652958c3 #0 PREEMPT(full) [ 74.610358][ T5324] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 74.610366][ T5324] Call Trace: [ 74.610375][ T5324] [ 74.610382][ T5324] dump_stack_lvl+0x189/0x250 [ 74.610445][ T5324] ? __pfx_dump_stack_lvl+0x10/0x10 [ 74.610464][ T5324] ? __pfx__printk+0x10/0x10 [ 74.610501][ T5324] ? print_lock_name+0xde/0x100 [ 74.610515][ T5324] print_deadlock_bug+0x28b/0x2a0 [ 74.610545][ T5324] validate_chain+0x1a3f/0x2140 [ 74.610563][ T5324] __lock_acquire+0xab9/0xd20 [ 74.610582][ T5324] ? udf_free_blocks+0x9e2/0x17f0 [ 74.610594][ T5324] lock_acquire+0x120/0x360 [ 74.610610][ T5324] ? udf_free_blocks+0x9e2/0x17f0 [ 74.610622][ T5324] ? sched_clock_cpu+0x74/0x430 [ 74.610640][ T5324] ? psi_task_switch+0x39a/0x6d0 [ 74.610653][ T5324] __mutex_lock+0x182/0xe80 [ 74.610712][ T5324] ? udf_free_blocks+0x9e2/0x17f0 [ 74.610723][ T5324] ? __pfx_folio_mark_accessed+0x10/0x10 [ 74.610741][ T5324] ? udf_free_blocks+0x9e2/0x17f0 [ 74.610752][ T5324] ? __pfx___mutex_lock+0x10/0x10 [ 74.610764][ T5324] ? __pfx___might_resched+0x10/0x10 [ 74.610811][ T5324] udf_free_blocks+0x9e2/0x17f0 [ 74.610823][ T5324] ? bdev_getblk+0x7b/0x690 [ 74.610839][ T5324] ? udf_get_fileshortad+0x6e/0x1b0 [ 74.610858][ T5324] ? __pfx_udf_free_blocks+0x10/0x10 [ 74.610875][ T5324] udf_delete_aext+0x4df/0xbc0 [ 74.610888][ T5324] ? udf_get_fileshortad+0xcb/0x1b0 [ 74.610908][ T5324] ? __pfx_udf_delete_aext+0x10/0x10 [ 74.610926][ T5324] udf_prealloc_blocks+0xb7e/0x10b0 [ 74.610939][ T5324] ? udf_get_filelongad+0x6e/0x1b0 [ 74.610958][ T5324] ? __pfx_udf_new_block+0x10/0x10 [ 74.610969][ T5324] ? udf_current_aext+0x660/0xad0 [ 74.610984][ T5324] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 74.610998][ T5324] ? udf_map_block+0x1508/0x42a0 [ 74.611012][ T5324] udf_map_block+0x1ddd/0x42a0 [ 74.611033][ T5324] ? __pfx_udf_map_block+0x10/0x10 [ 74.611057][ T5324] ? do_raw_spin_unlock+0x4d/0x240 [ 74.611073][ T5324] __udf_get_block+0x52/0x250 [ 74.611087][ T5324] __block_write_begin_int+0x6b5/0x1900 [ 74.611105][ T5324] ? folio_add_lru+0x1b2/0x3d0 [ 74.611121][ T5324] ? __pfx_udf_get_block+0x10/0x10 [ 74.611134][ T5324] ? __pfx___block_write_begin_int+0x10/0x10 [ 74.611151][ T5324] ? __pfx_udf_get_block+0x10/0x10 [ 74.611163][ T5324] block_write_begin+0x8a/0x120 [ 74.611177][ T5324] ? udf_write_begin+0x7d/0x260 [ 74.611190][ T5324] udf_write_begin+0x100/0x260 [ 74.611202][ T5324] generic_perform_write+0x2c4/0x910 [ 74.611222][ T5324] ? __pfx_generic_perform_write+0x10/0x10 [ 74.611239][ T5324] ? generic_file_direct_write+0x385/0x3e0 [ 74.611256][ T5324] ? file_update_time+0x416/0x490 [ 74.611275][ T5324] __generic_file_write_iter+0x1ae/0x230 [ 74.611293][ T5324] udf_file_write_iter+0x2d5/0x6c0 [ 74.611307][ T5324] iter_file_splice_write+0x937/0x1000 [ 74.611326][ T5324] ? __pfx_iter_file_splice_write+0x10/0x10 [ 74.611340][ T5324] ? rcu_read_lock_any_held+0xb3/0x120 [ 74.611377][ T5324] ? direct_splice_actor+0x10c/0x160 [ 74.611390][ T5324] ? __pfx_iter_file_splice_write+0x10/0x10 [ 74.611402][ T5324] direct_splice_actor+0x101/0x160 [ 74.611416][ T5324] splice_direct_to_actor+0x5a5/0xcc0 [ 74.611448][ T5324] ? __pfx_direct_splice_actor+0x10/0x10 [ 74.611463][ T5324] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 74.611479][ T5324] ? __pfx_aa_file_perm+0x10/0x10 [ 74.611502][ T5324] do_splice_direct+0x181/0x270 [ 74.611517][ T5324] ? __pfx_do_splice_direct+0x10/0x10 [ 74.611529][ T5324] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 74.611546][ T5324] ? rw_verify_area+0x258/0x650 [ 74.611568][ T5324] do_sendfile+0x4da/0x7e0 [ 74.611588][ T5324] ? __pfx_do_sendfile+0x10/0x10 [ 74.611602][ T5324] ? rcu_is_watching+0x15/0xb0 [ 74.611620][ T5324] ? __rseq_handle_notify_resume+0x37e/0x11f0 [ 74.611639][ T5324] __se_sys_sendfile64+0x13e/0x190 [ 74.611654][ T5324] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 74.611667][ T5324] ? rcu_is_watching+0x15/0xb0 [ 74.611686][ T5324] ? do_syscall_64+0xbe/0x3b0 [ 74.611700][ T5324] do_syscall_64+0xfa/0x3b0 [ 74.611712][ T5324] ? lockdep_hardirqs_on+0x9c/0x150 [ 74.611731][ T5324] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.611744][ T5324] ? clear_bhb_loop+0x60/0xb0 [ 74.611759][ T5324] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.611772][ T5324] RIP: 0033:0x7f76fa38e929 [ 74.611789][ 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 [ 74.611801][ T5324] RSP: 002b:00007f76fb146038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 74.611818][ T5324] RAX: ffffffffffffffda RBX: 00007f76fa5b5fa0 RCX: 00007f76fa38e929 [ 74.611828][ T5324] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 [ 74.611836][ T5324] RBP: 00007f76fa410b39 R08: 0000000000000000 R09: 0000000000000000 [ 74.611845][ T5324] R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000 [ 74.611853][ T5324] R13: 0000000000000000 R14: 00007f76fa5b5fa0 R15: 00007ffcfb3bab68 [ 74.611867][ T5324] [ 75.271368][ T4673] Bluetooth: hci0: command tx timeout [ 76.664892][ T1317] ieee802154 phy0 wpan0: encryption failed: -22 [ 76.669544][ T1317] ieee802154 phy1 wpan1: encryption failed: -22 [ 77.303498][ T4673] Bluetooth: hci0: command tx timeout [ 78.982960][ T10] usb 5-1: unable to get BOS descriptor or descriptor too short [ 78.989810][ T10] usb 5-1: unable to read config index 0 descriptor/start: -32 [ 78.994107][ T10] usb 5-1: chopping to 0 config(s) [ 78.997683][ T10] usb 5-1: can't read configurations, error -32 [ 79.122817][ T10] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 79.252916][ T10] usb 5-1: device descriptor read/64, error -32 [ 79.362976][ T10] usb usb5-port1: attempt power cycle [ 79.382906][ T4673] Bluetooth: hci0: command tx timeout [ 79.702816][ T10] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 79.723081][ T10] usb 5-1: device descriptor read/8, error -32