program: syz_mount_image$udf(&(0x7f0000000180), &(0x7f0000000100)='./bus\x00', 0x1014494, &(0x7f00000002c0)={[{@iocharset={'iocharset', 0x3d, 'iso8859-4'}}, {@partition={'partition', 0x3d, 0x6}}, {@gid_forget}, {@session={'session', 0x3d, 0xfe8}}, {@noadinicb}, {@anchor}, {@uid_forget}]}, 0xfe, 0xc24, &(0x7f0000001480)="$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) r1 = syz_genetlink_get_family_id$fou(&(0x7f0000000580), r0) sendfile(r0, r0, 0x0, 0x800000009) socket$pptp(0x18, 0x1, 0x2) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000480)={&(0x7f0000001fc0)=@delchain={0x80c, 0x65, 0x0, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, {0x2, 0x2}, {0x0, 0x4}, {0x0, 0xa}}, [@TCA_CHAIN={0x8}, @TCA_CHAIN={0x8, 0xb, 0x89f}, @filter_kind_options=@f_u32={{0x8}, {0x7d0, 0x2, [@TCA_U32_SEL={0x534, 0x5, {0x2, 0x7, 0x2, 0x0, 0x7, 0xd, 0x94, 0x2, [{0x1000006, 0x2, 0x7, 0x2}, {0x43, 0xfffffff7, 0x0, 0x6}, {0xe55, 0x1, 0xe000000, 0xa}, {0x1, 0xcf, 0x0, 0xf}, {0x7f, 0x7, 0x3, 0x1}, {0x8, 0x5, 0x3, 0xfff}, {0x9208, 0x87, 0x1, 0x2}, {0xffff, 0x5924, 0x6, 0x3}, {0x1, 0x2, 0x3, 0x7}, {0x5, 0x1, 0x8}, {0x3, 0x3, 0x5, 0xfff}, {0x9, 0xe, 0xfb, 0x9}, {0x8, 0x7, 0x2, 0x8}, {0xfffffffa, 0x10, 0xb, 0x5}, {0xc0a, 0xf, 0x6, 0x1}, {0x400000, 0x7fff, 0x2, 0x1}, {0xae, 0x2a, 0x2, 0x4}, {0x7, 0x4, 0xff, 0x3ff}, {0x6, 0x10001, 0x51, 0xe92}, {0x0, 0x4, 0x3, 0x7fff}, {0x40, 0x2e5, 0x6, 0x5}, {0xd, 0xffff, 0xfffffff7, 0x3}, {0x8, 0x8, 0x8, 0x4}, {0xf4, 0x3, 0x1dd, 0x9}, {0x4, 0x80000000, 0x8000, 0x2}, {0x2, 0x9, 0x776, 0x9}, {0x0, 0x1, 0x6f8, 0xffffffff}, {0x8, 0x7147, 0x9, 0x2}, {0x2, 0x9, 0x1, 0x3}, {0x0, 0x1, 0x2, 0x9}, {0x6, 0x2, 0x7fffffff, 0x9}, {0x6, 0x2, 0x8, 0x8}, {0x7, 0x1, 0x1ff, 0xbd}, {0x7, 0x6, 0x10000, 0x3ff}, {0x400, 0x81, 0xb4c767, 0xe10f}, {0x3, 0xfffff54f, 0x1, 0x10}, {0x0, 0x5, 0x784}, {0x5, 0x101, 0x7}, {0x7, 0x4, 0x6, 0x4}, {0x36c, 0x8, 0x2, 0x9}, {0x3, 0x80000000, 0x6, 0xffffffff}, {0x7, 0x80, 0x4, 0xe}, {0x3, 0xffffff01, 0x5, 0x7fff}, {0x7, 0x800, 0x0, 0x401}, {0x6, 0x7, 0x4f4, 0x40}, {0x4, 0x7ff, 0xb}, {0x1000, 0xa2, 0x0, 0x9}, {0x0, 0x0, 0x6, 0x7}, {0xa0, 0x8, 0x380, 0x800}, {0x101, 0x40004, 0x80, 0x1000}, {0x1, 0x100, 0x1, 0x10001}, {0x6, 0x7ff, 0x9, 0x1}, {0x0, 0x8, 0x7, 0x6}, {0x1, 0xe, 0x8, 0x80000000}, {0x39, 0x2, 0x5, 0x7}, {0xfffffffd, 0x3, 0x538, 0x3}, {0x7, 0x10001, 0x6, 0xcf}, {0x6, 0xa000000, 0x3, 0x9}, {0x1, 0x19ba, 0x5c23c64b, 0x7}, {0x0, 0x7, 0x5, 0xa}, {0xa, 0x4, 0x841, 0x8000}, {0xf, 0x1, 0xf, 0x4}, {0x4, 0x400, 0x8, 0x5}, {0x6, 0x5537, 0x48, 0x1}, {0x6, 0x6, 0x3, 0x54}, {0x3ff, 0x7, 0x5, 0xfffff9a8}, {0x2000, 0xfffffff0, 0x2, 0x2}, {0x81, 0xfffffff7, 0x29fd, 0x7}, {0x3, 0x6ffd, 0x3, 0x3}, {0x1, 0xfffff8c0, 0x3, 0x7ff}, {0x2, 0x1, 0x3, 0x5}, {0x7, 0x8, 0xd7, 0x80000001}, {0x6, 0x2, 0x1311fca0, 0x6}, {0x7f, 0x6, 0x0, 0x1}, {0x1200000, 0xffffb708, 0x9, 0xb}, {0x14d, 0x2, 0x9, 0x200}, {0x4, 0xfff, 0x7fff, 0x7}, {0x9c, 0x0, 0x37}, {0x2, 0xf, 0x200, 0xd}, {0x7, 0x43f, 0xfffffff7, 0x3}, {0x3, 0x2, 0x7, 0x8}, {0x7, 0x3, 0x9, 0x4cd}]}}, @TCA_U32_ACT={0x298, 0x7, [@m_csum={0x128, 0x4, 0x0, 0x0, {{0x9}, {0xac, 0x2, 0x0, 0x1, [@TCA_CSUM_PARMS={0x1c, 0x1, {{0x0, 0x0, 0xffffffffffffffff, 0x4, 0xfffffffb}, 0x48}}, @TCA_CSUM_PARMS={0x1c, 0x1, {{0x100, 0x4, 0x1, 0x8, 0x928}, 0x60}}, @TCA_CSUM_PARMS={0x1c, 0x1, {{0x10001, 0x7a, 0x10000000, 0x5, 0x3}, 0x43}}, @TCA_CSUM_PARMS={0x1c, 0x1, {{0xc, 0x0, 0x1, 0x3, 0x3}, 0x26}}, @TCA_CSUM_PARMS={0x1c, 0x1, {{0x1, 0x430800, 0x4, 0x7, 0x4}, 0x80}}, @TCA_CSUM_PARMS={0x1c, 0x1, {{0x7, 0x7, 0x4, 0x9, 0xb}, 0x77}}]}, {0x51, 0x6, "fd94c06764f37d74e02e47d2112b5242809e2419a3cf7f21e0a41fd7d83b6df9e9c285b3a976c4ebcd91e46a33997be265aa1e90d10cac810d688759dede90afba97f4b1c43b3b365eb86d85fb"}, {0xc, 0x7, {0x1}}, {0xc, 0x8, {0x3, 0x2}}}}, @m_ife={0x12c, 0x1a, 0x0, 0x0, {{0x8}, {0x34, 0x2, 0x0, 0x1, [@TCA_IFE_TYPE={0x6}, @TCA_IFE_SMAC={0xa, 0x4, @random="dad6d78a2b85"}, @TCA_IFE_PARMS={0x1c, 0x1, {{0x8, 0x6, 0x3, 0x2, 0x2}}}]}, {0xd1, 0x6, "59b69513e97e708c0dc836f724775dbb59b2f21e013426759c817a1bd718849baa0b9d47756ce75b26f113f5bfe81ebbf0e9402c154843e8d984f48c206498de65a138cb2d060aa964127c922df85b876a47f2b35d8bc8e3e0ce3e453511ffd2a310dcb2eae4282c44146c584cc43344d5f1ea9b4df4c64d84ecff6471260be3505bc473c79bf28b98681cf5a02aa5bc1b6f0262ae027793ba124918980b15c3553c551216ea72564c82e90de44c00d59ee2172f0b1b766f5a2ab4a1acdfb8437a423a10e5be87bc5ef9d696fa"}, {0xc, 0x7, {0x0, 0x1}}, {0xc, 0x8, {0x1, 0x1}}}}, @m_bpf={0x40, 0x13, 0x0, 0x0, {{0x8}, {0x4}, {0x15, 0x6, "9528bdfc9d60e78490c2489a54eeb7d4e0"}, {0xc, 0x7, {0x0, 0x1}}, {0xc, 0x8, {0x3}}}}]}]}}]}, 0x80c}, 0x1, 0x0, 0x0, 0x91}, 0x0) r2 = socket(0x10, 0x803, 0x0) sendto(r2, &(0x7f0000000740)="120000001200e7ef007b00000000000000a1", 0x12, 0x0, 0x0, 0x0) socket(0x1, 0x1, 0xfffffff7) recvmmsg(r2, &(0x7f00000037c0)=[{{&(0x7f00000004c0)=@ethernet={0x0, @random}, 0xfdf4, &(0x7f0000000380)=[{&(0x7f0000000140)=""/100, 0x365}, {&(0x7f0000000280)=""/85, 0x7c}, {&(0x7f0000000fc0)=""/4096, 0x197}, {&(0x7f0000000400)=""/106, 0x645}, {&(0x7f0000000980)=""/73, 0x1b}, {&(0x7f0000000200)=""/77, 0x14}, {&(0x7f00000007c0)=""/154, 0x21}, {&(0x7f00000001c0)=""/17, 0x1d8}], 0x21, &(0x7f0000000600)=""/191, 0x41}}], 0x4000000000003b4, 0x0, &(0x7f0000003700)={0x77359400}) r3 = open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x0) r4 = open(&(0x7f0000000080)='./bus\x00', 0x185102, 0x0) ftruncate(r4, 0x2007ffb) sendfile(r3, r4, 0x0, 0x1000000201005) creat(&(0x7f0000000000)='./bus\x00', 0x0) mount(&(0x7f0000000440)=@loop={'/dev/loop', 0x0}, &(0x7f0000000080)='./bus\x00', 0x0, 0x1000, 0x0) r5 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000400)='/sys/power/resume', 0x149a82, 0x0) write$cgroup_int(r5, &(0x7f0000000040)=0x40000, 0x12) sendmsg$FOU_CMD_ADD(r0, &(0x7f0000000700)={&(0x7f0000000540)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f00000006c0)={&(0x7f00000005c0)=ANY=[@ANYBLOB="38000080", @ANYRES16=r1, @ANYBLOB="00042dbd7000fedbdf2501000000140009000000000000000000000000000000000106000a004e240000050003002b000000"], 0x38}, 0x1, 0x0, 0x0, 0x1}, 0x880) r6 = open(&(0x7f0000000000)='./bus\x00', 0x40a00, 0x4) ioctl$LOOP_SET_STATUS64(r6, 0x4c04, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x7fffffffffffffff, 0x400, 0x0, 0x0, 0x1, 0x0, "ef35af413bb901527fe4d0ce5d29c3ee5e5c3676345a41499db7aac63a01000000000000004faa2ae2c084a0ea0000000000000000000c00002000", "036c47c67808200400000000000000335263bdbcef549ba197fce47ddfdd753abd950100002a00ffffffffffffffff00000000e8f20000000200", "b7326736181c208220000000b9000000000000000000f0fffffffff2ff00", [0x4]}) creat(&(0x7f0000000040)='./file1\x00', 0xd) r7 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r7, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f00000002c0)={{0x14}, [@NFT_MSG_NEWTABLE={0x20, 0x0, 0xa, 0x301, 0x0, 0x0, {0x1}, [@NFTA_TABLE_NAME={0x9, 0x1, 'syz0\x00'}]}, @NFT_MSG_NEWCHAIN={0x2c, 0x3, 0xa, 0x201, 0x0, 0x0, {0x1}, [@NFTA_CHAIN_NAME={0x9, 0x3, 'syz2\x00'}, @NFTA_CHAIN_TABLE={0x9, 0x1, 'syz0\x00'}]}, @NFT_MSG_NEWRULE={0x58, 0x6, 0xa, 0x401, 0x0, 0x0, {0x1}, [@NFTA_RULE_CHAIN_ID={0x8}, @NFTA_RULE_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_RULE_EXPRESSIONS={0x30, 0x4, 0x0, 0x1, [{0x2c, 0x1, 0x0, 0x1, @xfrm={{0x9}, @val={0x1c, 0x2, 0x0, 0x1, [@NFTA_XFRM_DIR={0x5}, @NFTA_XFRM_DREG={0x8}, @NFTA_XFRM_KEY={0x8, 0x2, 0x1, 0x0, 0x2}]}}}]}]}], {0x14}}, 0xcc}}, 0x0) [ 124.078742][ T4681] Bluetooth: hci0: command tx timeout [ 124.203229][ T5356] loop0: detected capacity change from 0 to 2048 [ 124.264765][ T5356] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 124.285084][ T5356] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 124.306771][ T5356] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 124.317704][ T5356] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 124.330918][ T25] audit: type=1800 audit(1768423374.180:2): pid=5356 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 [ 124.509344][ T5356] [ 124.510459][ T5356] ============================================ [ 124.512978][ T5356] WARNING: possible recursive locking detected [ 124.515677][ T5356] syzkaller #0 Not tainted [ 124.517675][ T5356] -------------------------------------------- [ 124.519919][ T5356] syz.0.0/5356 is trying to acquire lock: [ 124.522168][ T5356] ffff888011936928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0xa8f/0x18e0 [ 124.526006][ T5356] [ 124.526006][ T5356] but task is already holding lock: [ 124.528955][ T5356] ffff888011936928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10f0 [ 124.533283][ T5356] [ 124.533283][ T5356] other info that might help us debug this: [ 124.536360][ T5356] Possible unsafe locking scenario: [ 124.536360][ T5356] [ 124.539412][ T5356] CPU0 [ 124.540802][ T5356] ---- [ 124.542097][ T5356] lock(&sbi->s_alloc_mutex); [ 124.543941][ T5356] lock(&sbi->s_alloc_mutex); [ 124.545856][ T5356] [ 124.545856][ T5356] *** DEADLOCK *** [ 124.545856][ T5356] [ 124.549156][ T5356] May be due to missing lock nesting notation [ 124.549156][ T5356] [ 124.552633][ T5356] 4 locks held by syz.0.0/5356: [ 124.554557][ T5356] #0: ffff88801f8aa420 (sb_writers#12){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 [ 124.558562][ T5356] #1: ffff888011db4f40 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 124.562858][ T5356] #2: ffff888011db4d70 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x283/0x45f0 [ 124.566317][ T5356] #3: ffff888011936928 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10f0 [ 124.570283][ T5356] [ 124.570283][ T5356] stack backtrace: [ 124.572449][ T5356] CPU: 0 UID: 0 PID: 5356 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 124.572460][ T5356] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 124.572465][ T5356] Call Trace: [ 124.572471][ T5356] [ 124.572475][ T5356] dump_stack_lvl+0xe8/0x150 [ 124.572488][ T5356] print_deadlock_bug+0x279/0x290 [ 124.572499][ T5356] __lock_acquire+0x2540/0x2cf0 [ 124.572507][ T5356] ? __pfx___schedule+0x10/0x10 [ 124.572572][ T5356] ? __queue_work+0x1a2/0xf90 [ 124.572586][ T5356] ? __lock_acquire+0x6b6/0x2cf0 [ 124.572597][ T5356] ? udf_free_blocks+0xa8f/0x18e0 [ 124.572607][ T5356] lock_acquire+0x107/0x340 [ 124.572615][ T5356] ? udf_free_blocks+0xa8f/0x18e0 [ 124.572626][ T5356] __mutex_lock+0x187/0x1350 [ 124.572635][ T5356] ? udf_free_blocks+0xa8f/0x18e0 [ 124.572644][ T5356] ? __lock_acquire+0x6b6/0x2cf0 [ 124.572655][ T5356] ? udf_free_blocks+0xa8f/0x18e0 [ 124.572666][ T5356] ? __pfx___mutex_lock+0x10/0x10 [ 124.572676][ T5356] ? folio_mark_accessed+0x42c/0x8b0 [ 124.572693][ T5356] ? fs_reclaim_acquire+0x7d/0x100 [ 124.572707][ T5356] ? fs_reclaim_acquire+0x7d/0x100 [ 124.572721][ T5356] udf_free_blocks+0xa8f/0x18e0 [ 124.572733][ T5356] ? bdev_getblk+0x583/0x6e0 [ 124.572747][ T5356] ? udf_get_fileshortad+0x6e/0x1b0 [ 124.572757][ T5356] ? udf_current_aext+0x698/0xb30 [ 124.572768][ T5356] ? __pfx_udf_free_blocks+0x10/0x10 [ 124.572776][ T5356] ? udf_next_aext+0x447/0x540 [ 124.572785][ T5356] udf_delete_aext+0x4df/0xbc0 [ 124.572793][ T5356] ? __pfx_udf_delete_aext+0x10/0x10 [ 124.572800][ T5356] ? udf_next_aext+0x44e/0x540 [ 124.572811][ T5356] udf_prealloc_blocks+0xbb4/0x10f0 [ 124.572818][ T5356] ? bdev_getblk+0x583/0x6e0 [ 124.572827][ T5356] ? __pfx_udf_new_block+0x10/0x10 [ 124.572834][ T5356] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 124.572843][ T5356] ? udf_map_block+0x1662/0x45f0 [ 124.572851][ T5356] udf_map_block+0x1f70/0x45f0 [ 124.572865][ T5356] ? __pfx_udf_map_block+0x10/0x10 [ 124.572883][ T5356] ? do_raw_spin_unlock+0x4d/0x240 [ 124.572896][ T5356] __udf_get_block+0x52/0x250 [ 124.572908][ T5356] __block_write_begin_int+0x6b5/0x1900 [ 124.572926][ T5356] ? __pfx_udf_get_block+0x10/0x10 [ 124.572937][ T5356] ? __pfx___block_write_begin_int+0x10/0x10 [ 124.572951][ T5356] ? __pfx_udf_get_block+0x10/0x10 [ 124.572960][ T5356] block_write_begin+0x8d/0x120 [ 124.572974][ T5356] ? udf_write_begin+0x92/0x270 [ 124.572985][ T5356] udf_write_begin+0x118/0x270 [ 124.572997][ T5356] generic_perform_write+0x2c5/0x900 [ 124.573008][ T5356] ? __pfx_generic_perform_write+0x10/0x10 [ 124.573018][ T5356] ? generic_file_direct_write+0x385/0x3e0 [ 124.573028][ T5356] __generic_file_write_iter+0x1ae/0x230 [ 124.573037][ T5356] udf_file_write_iter+0x2d5/0x6c0 [ 124.573050][ T5356] iter_file_splice_write+0x972/0x10b0 [ 124.573067][ T5356] ? __pfx_iter_file_splice_write+0x10/0x10 [ 124.573083][ T5356] ? __pfx_iter_file_splice_write+0x10/0x10 [ 124.573092][ T5356] direct_splice_actor+0x101/0x160 [ 124.573100][ T5356] splice_direct_to_actor+0x5a8/0xcc0 [ 124.573109][ T5356] ? __pfx_direct_splice_actor+0x10/0x10 [ 124.573115][ T5356] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 124.573123][ T5356] do_splice_direct+0x181/0x270 [ 124.573129][ T5356] ? __pfx_do_splice_direct+0x10/0x10 [ 124.573135][ T5356] ? common_file_perm+0x1b5/0x220 [ 124.573143][ T5356] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 124.573151][ T5356] ? rw_verify_area+0x255/0x4d0 [ 124.573159][ T5356] do_sendfile+0x4da/0x7e0 [ 124.573167][ T5356] ? __pfx_do_sendfile+0x10/0x10 [ 124.573174][ T5356] ? __se_sys_futex+0x36f/0x400 [ 124.573182][ T5356] __se_sys_sendfile64+0x13e/0x190 [ 124.573188][ T5356] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 124.573196][ T5356] do_syscall_64+0xec/0xf80 [ 124.573202][ T5356] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 124.573208][ T5356] ? trace_irq_disable+0x37/0x100 [ 124.573216][ T5356] ? clear_bhb_loop+0x60/0xb0 [ 124.573223][ T5356] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 124.573229][ T5356] RIP: 0033:0x7f67d618f7c9 [ 124.573237][ T5356] 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 [ 124.573243][ T5356] RSP: 002b:00007f67d703b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 124.573251][ T5356] RAX: ffffffffffffffda RBX: 00007f67d63e5fa0 RCX: 00007f67d618f7c9 [ 124.573256][ T5356] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 [ 124.573259][ T5356] RBP: 00007f67d6213f91 R08: 0000000000000000 R09: 0000000000000000 [ 124.573263][ T5356] R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000 [ 124.573267][ T5356] R13: 00007f67d63e6038 R14: 00007f67d63e5fa0 R15: 00007ffde7508cf8 [ 124.573274][ T5356] [ 124.899873][ T5359] loop0: detected capacity change from 2048 to 0 [ 124.922583][ T5357] PM: Image not found (code -6) [ 126.088760][ T4681] Bluetooth: hci0: command tx timeout [ 128.168768][ T4681] Bluetooth: hci0: command tx timeout [ 130.248586][ T4681] Bluetooth: hci0: command tx timeout