r0 = syz_open_procfs$namespace(0xffffffffffffffff, &(0x7f0000000100)='ns/mnt\x00')
ioctl$BTRFS_IOC_ADD_DEV(r0, 0x5000940a, &(0x7f00000001c0)={{}, "ee0ebceecc761cec1dbf263211bab894b962331082fa21a6d24471a082fb5a9fcdd0fcfcf883a7bebffce49f5206f754c14df15e18ff6c8a03608ee8cef3e5a997d324265a10764840fae10b5799cac62bc42fb7a18564f768d45eb313c4c719f745788b516178b47062e07120bce7ff065a1ce31453abc201fc4ae9756aa97be8f667f3f0cb41ba902e7be28c1603b15b0b2693008328236f5e8c2c2f8cd3587bcc2ea2122951708d01d7d8390c1e1f6a23d2a08aafceab92c7792eae32d523e5b942595ef10a037c641d10671bc410c489e4f3de49626d00703c4d908ec5b44fa7012923c781e8880f29a770dc733a216c7a6c686f3670f54a90211d1676710e909645965eb52b53ff5ea8ad08272c15470d041f03387bf24e5006b4d10dcfbf2aecc5225d7affab8c910fa8435d16e9b1c6c40ea5ca6a6743256ebfee7567b744829facdba6505c82c4a85fc6967881a78efefe0a487974712c06aa294b4f75e85c05af54823440f96930daa14a0c938d1f741e74ba0798ab680e6372820a9794b22e91abad942c6775c303c5df81fbafa10eb0c665df44cc0fc9ed8dccc76af8ff85a602c7d1a5df128590af5b0a321c8bd6a204e404e083be0a21f61ad28a8efec107607b13c18475d3be6352cd72a3e8f0cb6bb271c346562af242153aaabe4de79a3760effdd6791773cd293504a09448798ba9c3b4d8f36469848aca5b8288676623f40aff15436d40b8e238ffa9484e2c99c1e20582e72944262aadb989af096a3b30cb039dba9f19001c069fbdcd903b6fcb5cd8ac82685e9587fc202b9e53713869a9e262ae4486ed11100e0a45e206a0a5b221ed08a24708e284873e965a751bf666399ba33dc063be05b2a9f9de00d0fa5478b19aeb2b354018dd8f8917f8c53379047c4bba155bc7435789f3ca2efd35b1f5ba5044b7e86e77541fd5fc1f270ea6d926d76663b753f78b99afa00b0af92fa60393254a58c9524faaa8dc381bb95467c1f5dfc709f5212da7711314b2237d100c6dea3d68df3ac3da97d9bc0d25429f3e29e340f6f47045d0514e6ac25bcf4e8903a8a44726a4023342a771cafb36c58cb12c7188a4f4ed2e23121635cf86d17844f2a015dcc8f24203a640379d3e4722934e440936ef369d7c8d53cda9313b40eb4a2ddfb56baea0e6f158bc58546b0254f344d2cfa9699a9807c3a8a85ff47284cb5bfc5f20a1a44fdc40bccbf9b27f95b6ab6f35f8cc9442b55dae96e9b48aa1570ece327e309e6e1b3b7bd0a6e009c1432f894b29c9a45498bcc2309abd2aeb0aa88ac27e88d9289fa5d44e9233b962af0a4d61f01fe31ed40668a18317062d8290af07c9e0e79f5ff58d3e3a290f336dc695645ce06f1fc651f2235100d0cf59524a138db6dfd602bec1474fe485cf70af1de9dae965e9479f21ec6a0faf0816710dbd5e694456f850329400ae600f9358ff5158c18d0ae5ac56cfdbba8396d2238c5a2f83ecef2a739249900a474b0255f2e24f6bda32ce12f2a860849e4d85915943e0ad848517c4b3bca707b4585f185615b90c43e85f7c01800d2c5f66bd78cf9c2b2bf102ff2ab7b2a77537e0c4843e345ecaeaf37c75019ed17b99a8dadcd61cee817b9eadf08e799a876e29bb582bd5d23bfe2ea98b07d7a953637220d9b6866c5567f8c5d0266c12fd6b6f71f8ba9ad189cdbb2e3f4b876f7f3c5caab8edd2e82eb53d94effccedb1eba43ede54fb4b972d9c69f30f0e1b6ecc4fa5fa207ad42eb6987178c846c27ce4b8ae4b4198e6b17a9a90400f3723c0934ca87591e943efabf61086faec7c691e6166bcec40449f819e561024a613a03418559eb2152a102696a420065ab379db0635edb19ad87d6f4ff03dd960f599d7731896b342da62902b3eedb3835489fae818d7c85ca89b1ffd2efda1f830b310a5dfca63ffb17ed4eea5a2a77384599de8bd8461cc38a594f041834fa3d841fb92980d9600627a0cd9134b31340e6f30ee8ede413c6538cfe08f17b9abfb5db72b9579b0d97837221ef8665e35b43aba757b6f2a85fef07ee6fbb6e788560858137ca6d57da3c75d9a9fceb0b4539ee15f30819ede59e7d716a9b4286e58265c01252bc18cde558e0f5021a0096c1c0ae082ae9ee3076e73f0144dabc1f2952b956336f769816443f484fd94e85a6f66ce3d5d4ba0eb321199368701031dfccbe69a61bd58de5319778daee41848b4937af4cee507e3210222fbb3523b7ab076c09b5a8efa76367acf7bdc524e5f3df6de8e1a6550f160b124a530fc8a244f8a7c4f39b39e433ce07f723216f20326b409eb6fbf797bda5f73396b0fa53f2c830b0af64a14b4676487a77ab7e8a47cb6bbb7e73bcb07101d39ba3265c73c4844194794628f474d71116cda53741c76a33d2d2aeb0c7a3c65b816b88e5f088a21265cf858ed48be109ed9a73211ffa986545bc09a2b5a52669551ffe89dcc0d397efd0df36dc67191b1e5b29bc216cf18f7b6a7d91ea08e3878a8009f2aaea2532cee1e16f5a86dedf05d16a47cf1c95c12b4eee0a4721e4006e889b60bd04e353179cc2a6a33c685ead83653feb509a0fab4ff6d08fffbef736a8cacff77150449752539b93699c9839bc40a14b85f79251bece365abe0c11b1f7b03861ef28a9f441ff3b9309d66d1bb901d78f332a0e1393b7a083dc4cb368fa6d83a92374f09a89d84d999a270f3a34fb5b31f0a32c8e8cc81129213b754b580ebad727bffdf527b3a062d974b5c177dc5ba5127206cf11ff11b1a573a901f0ec284272d2c72f7911aac8b4f1b1b5abe3c02a89662eeaabec49182ddbe5222294b1a53fb4c1e61f1d0fc95672b79d09323e70d0cfbb84d4e3a5896865220d99f6e971fcdfabe6167714155d29d30def63653655917ce9c089405e62744e9b744af0a8549dcc8c99a5c946bdfa8efc5993e09aac19d65c318aa74520aed3faf0094ac25110ac626867c3b5e7e0b3f951a96191b81f586f804184127aa99ddc14785fcb9e3f4ec5c134674d9ffd55618a4636de585b0c7fc8fb0eeeb42269d68cc933b75bf294b52e684585b473c58d563bf20ff35b233d88d95680a9bc57ca6f58b207395dace1377c6f7590ce3232107cf3aeb794a7de9c7cc2b76eecbe08d1407f9f9dba37f96a4be3457fad6bcd235f0d5aaeb2707e2a71a9676dab254766a637b3f3b917dd4f4c38908f75555dcda01ff871ab704059dbcd81cb2a0d5bc466a602f4116435cbfcd819607a7befb2d137b1db30b27d95c73eb8dcb8ab3e96d553eed867f64c6f4f5dcc406b62e80e956aeb40bae388953b5b6e6d2750adfbe370a16d4309a63b67660f5e3ccc2f23ac2bb7b3e18b17dff952cb996e6a340344534cb6eaee3950ef9c0af159af6f475c487b605f6b9cb4cb7c88319f6bddfceb043bc2ab72a8416f9f4b5713d0ec3bcbb483516b9de3abfff84544abaa6e582632645f37f27690246dc01c42f6130a11a338ffcbaf6ab06ed62d81a17f2ae348dee2d66188e8ded70fcc8ddb07780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