program: r0 = syz_mount_image$udf(&(0x7f0000000180), &(0x7f0000000100)='./bus\x00', 0x1014494, &(0x7f00000002c0)={[{@iocharset={'iocharset', 0x3d, 'iso8859-4'}}, {@partition={'partition', 0x3d, 0x6}}, {@gid_forget}, {@session={'session', 0x3d, 0xfe8}}, {@noadinicb}, {@anchor}, {@uid_forget}]}, 0xfe, 0xc24, &(0x7f0000001480)="$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") r1 = open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x0) ftruncate(r1, 0x2007ffc) r2 = syz_open_dev$rtc(&(0x7f0000000040), 0x5, 0x2000) dup2(r0, r2) sendfile(r1, r1, 0x0, 0x800000009) r3 = open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x0) r4 = open(&(0x7f0000000080)='./bus\x00', 0x107382, 0x1d0) ftruncate(r4, 0x2007ffb) sendfile(r3, r4, 0x0, 0x1000000201005) syz_usb_connect$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(&(0x7f00000013c0)='./file1\x00', 0x0) symlink(&(0x7f0000000080)='.\x00', &(0x7f0000000000)='./file0\x00') 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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") (async) open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x0) (async) ftruncate(r1, 0x2007ffc) (async) syz_open_dev$rtc(&(0x7f0000000040), 0x5, 0x2000) (async) dup2(r0, r2) (async) sendfile(r1, r1, 0x0, 0x800000009) (async) open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x0) (async) open(&(0x7f0000000080)='./bus\x00', 0x107382, 0x1d0) (async) ftruncate(r4, 0x2007ffb) (async) sendfile(r3, r4, 0x0, 0x1000000201005) (async) syz_usb_connect$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) (async) truncate(&(0x7f00000013c0)='./file1\x00', 0x0) (async) symlink(&(0x7f0000000080)='.\x00', &(0x7f0000000000)='./file0\x00') (async) [ 85.382925][ T5325] Bluetooth: hci0: command tx timeout [ 85.493833][ T5347] loop0: detected capacity change from 0 to 2048 [ 85.513454][ T5347] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 85.537866][ T5347] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 85.551812][ T5347] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 85.572411][ T5347] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 85.579849][ T25] audit: type=1800 audit(1752258214.011:2): pid=5347 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 [ 85.950591][ T10] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 86.114528][ T5352] [ 86.115869][ T5352] ============================================ [ 86.118953][ T5352] WARNING: possible recursive locking detected [ 86.121572][ T5352] 6.16.0-rc5-syzkaller-00193-g40f92e79b0aa #0 Not tainted [ 86.124638][ T5352] -------------------------------------------- [ 86.127438][ T5352] syz.0.0/5352 is trying to acquire lock: [ 86.130175][ T5352] ffff88801a31ed28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 86.134907][ T5352] [ 86.134907][ T5352] but task is already holding lock: [ 86.138281][ T5352] ffff88801a31ed28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 86.142430][ T5352] [ 86.142430][ T5352] other info that might help us debug this: [ 86.145717][ T5352] Possible unsafe locking scenario: [ 86.145717][ T5352] [ 86.148747][ T5352] CPU0 [ 86.150251][ T5352] ---- [ 86.151624][ T5352] lock(&sbi->s_alloc_mutex); [ 86.153787][ T5352] lock(&sbi->s_alloc_mutex); [ 86.156071][ T5352] [ 86.156071][ T5352] *** DEADLOCK *** [ 86.156071][ T5352] [ 86.159593][ T5352] May be due to missing lock nesting notation [ 86.159593][ T5352] [ 86.163100][ T5352] 4 locks held by syz.0.0/5352: [ 86.165156][ T5352] #0: ffff888011d00428 (sb_writers#12){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 [ 86.169389][ T5352] #1: ffff888052cd0f60 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 86.174645][ T5352] #2: ffff888052cd0d90 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x291/0x42a0 [ 86.179025][ T5352] #3: ffff88801a31ed28 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 86.183299][ T5352] [ 86.183299][ T5352] stack backtrace: [ 86.185746][ T5352] CPU: 0 UID: 0 PID: 5352 Comm: syz.0.0 Not tainted 6.16.0-rc5-syzkaller-00193-g40f92e79b0aa #0 PREEMPT(full) [ 86.185762][ T5352] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 86.185769][ T5352] Call Trace: [ 86.185776][ T5352] [ 86.185782][ T5352] dump_stack_lvl+0x189/0x250 [ 86.185799][ T5352] ? __pfx_dump_stack_lvl+0x10/0x10 [ 86.185811][ T5352] ? __pfx__printk+0x10/0x10 [ 86.185825][ T5352] ? print_lock_name+0xde/0x100 [ 86.185839][ T5352] print_deadlock_bug+0x28b/0x2a0 [ 86.185854][ T5352] validate_chain+0x1a3f/0x2140 [ 86.185871][ T5352] __lock_acquire+0xab9/0xd20 [ 86.185884][ T5352] ? udf_free_blocks+0x9e2/0x17f0 [ 86.185895][ T5352] lock_acquire+0x120/0x360 [ 86.185906][ T5352] ? udf_free_blocks+0x9e2/0x17f0 [ 86.185919][ T5352] __mutex_lock+0x182/0xe80 [ 86.185969][ T5352] ? udf_free_blocks+0x9e2/0x17f0 [ 86.185981][ T5352] ? __pfx_folio_mark_accessed+0x10/0x10 [ 86.185997][ T5352] ? udf_free_blocks+0x9e2/0x17f0 [ 86.186014][ T5352] ? __pfx___mutex_lock+0x10/0x10 [ 86.186027][ T5352] ? __pfx___might_resched+0x10/0x10 [ 86.186040][ T5352] udf_free_blocks+0x9e2/0x17f0 [ 86.186053][ T5352] ? bdev_getblk+0x7b/0x690 [ 86.186068][ T5352] ? udf_get_fileshortad+0x6e/0x1b0 [ 86.186080][ T5352] ? __pfx_udf_free_blocks+0x10/0x10 [ 86.186096][ T5352] udf_delete_aext+0x4df/0xbc0 [ 86.186110][ T5352] ? udf_get_fileshortad+0xcb/0x1b0 [ 86.186123][ T5352] ? __pfx_udf_delete_aext+0x10/0x10 [ 86.186140][ T5352] udf_prealloc_blocks+0xb7e/0x10b0 [ 86.186153][ T5352] ? udf_get_filelongad+0x6e/0x1b0 [ 86.186164][ T5352] ? __pfx_udf_new_block+0x10/0x10 [ 86.186175][ T5352] ? udf_current_aext+0x660/0xad0 [ 86.186189][ T5352] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 86.186203][ T5352] ? udf_map_block+0x14ce/0x42a0 [ 86.186216][ T5352] udf_map_block+0x1ddd/0x42a0 [ 86.186234][ T5352] ? percpu_ref_get_many+0x19/0x140 [ 86.186249][ T5352] ? __pfx_udf_map_block+0x10/0x10 [ 86.186263][ T5352] ? percpu_ref_get_many+0x19/0x140 [ 86.186281][ T5352] ? do_raw_spin_lock+0x121/0x290 [ 86.186297][ T5352] ? do_raw_spin_unlock+0x4d/0x240 [ 86.186311][ T5352] __udf_get_block+0x52/0x250 [ 86.186323][ T5352] ? create_empty_buffers+0x465/0x530 [ 86.186338][ T5352] __block_write_begin_int+0x6b5/0x1900 [ 86.186355][ T5352] ? folio_add_lru+0x1b2/0x3d0 [ 86.186369][ T5352] ? __pfx_udf_get_block+0x10/0x10 [ 86.186381][ T5352] ? __pfx___block_write_begin_int+0x10/0x10 [ 86.186396][ T5352] ? __pfx_udf_get_block+0x10/0x10 [ 86.186407][ T5352] block_write_begin+0x8a/0x120 [ 86.186421][ T5352] ? udf_write_begin+0x7d/0x260 [ 86.186434][ T5352] udf_write_begin+0x100/0x260 [ 86.186447][ T5352] generic_perform_write+0x2c7/0x910 [ 86.186460][ T5352] ? __pfx_generic_perform_write+0x10/0x10 [ 86.186469][ T5352] ? generic_file_direct_write+0x385/0x3e0 [ 86.186478][ T5352] ? file_update_time+0x2da/0x490 [ 86.186488][ T5352] __generic_file_write_iter+0x1ae/0x230 [ 86.186499][ T5352] udf_file_write_iter+0x2d5/0x6c0 [ 86.186512][ T5352] iter_file_splice_write+0x93a/0x1000 [ 86.186531][ T5352] ? __pfx_iter_file_splice_write+0x10/0x10 [ 86.186545][ T5352] ? rcu_read_lock_any_held+0xb3/0x120 [ 86.186558][ T5352] ? __pfx_iter_file_splice_write+0x10/0x10 [ 86.186566][ T5352] direct_splice_actor+0x101/0x160 [ 86.186575][ T5352] splice_direct_to_actor+0x5a5/0xcc0 [ 86.186587][ T5352] ? __pfx_direct_splice_actor+0x10/0x10 [ 86.186599][ T5352] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 86.186611][ T5352] ? __pfx_aa_file_perm+0x10/0x10 [ 86.186623][ T5352] do_splice_direct+0x181/0x270 [ 86.186636][ T5352] ? __pfx_do_splice_direct+0x10/0x10 [ 86.186648][ T5352] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 86.186663][ T5352] ? rw_verify_area+0x258/0x650 [ 86.186674][ T5352] do_sendfile+0x4da/0x7e0 [ 86.186691][ T5352] ? __pfx_do_sendfile+0x10/0x10 [ 86.186704][ T5352] ? rcu_is_watching+0x15/0xb0 [ 86.186716][ T5352] ? __rseq_handle_notify_resume+0x37e/0x11f0 [ 86.186734][ T5352] __se_sys_sendfile64+0x13e/0x190 [ 86.186748][ T5352] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 86.186760][ T5352] ? rcu_is_watching+0x15/0xb0 [ 86.186772][ T5352] ? do_syscall_64+0xbe/0x3b0 [ 86.186784][ T5352] do_syscall_64+0xfa/0x3b0 [ 86.186793][ T5352] ? lockdep_hardirqs_on+0x9c/0x150 [ 86.186808][ T5352] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.186819][ T5352] ? clear_bhb_loop+0x60/0xb0 [ 86.186830][ T5352] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.186839][ T5352] RIP: 0033:0x7f6db4d8e929 [ 86.186851][ T5352] 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 [ 86.186859][ T5352] RSP: 002b:00007f6db5c44038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 86.186873][ T5352] RAX: ffffffffffffffda RBX: 00007f6db4fb6160 RCX: 00007f6db4d8e929 [ 86.186881][ T5352] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 [ 86.186887][ T5352] RBP: 00007f6db4e10b39 R08: 0000000000000000 R09: 0000000000000000 [ 86.186893][ T5352] R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000 [ 86.186899][ T5352] R13: 0000000000000000 R14: 00007f6db4fb6160 R15: 00007ffc334570f8 [ 86.186910][ T5352] [ 86.431138][ T54] cfg80211: failed to load regulatory.db [ 87.390336][ T4689] Bluetooth: hci0: command tx timeout [ 89.470779][ T4689] Bluetooth: hci0: command tx timeout [ 91.151723][ T10] usb 5-1: unable to get BOS descriptor or descriptor too short [ 91.157832][ T10] usb 5-1: unable to read config index 0 descriptor/start: -32 [ 91.161508][ T10] usb 5-1: chopping to 0 config(s) [ 91.163633][ T10] usb 5-1: can't read configurations, error -32 [ 91.290357][ T10] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 91.420445][ T10] usb 5-1: device descriptor read/64, error -32 [ 91.530541][ T10] usb usb5-port1: attempt power cycle [ 91.550475][ T4689] Bluetooth: hci0: command tx timeout [ 91.870387][ T10] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 91.890835][ T10] usb 5-1: device descriptor read/8, error -32 [ 92.130536][ T10] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 92.150750][ T10] usb 5-1: device descriptor read/8, error -32 [ 92.260891][ T10] usb usb5-port1: unable to enumerate USB device