last executing test programs: 13.405383866s ago: executing program 1 (id=130): r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000180)=ANY=[@ANYBLOB="1201fb0009030320d812010079de01ec020109021b0001000003000904000001785ecc00090585020004"], 0x0) r1 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) read$char_usb(r1, &(0x7f0000000000)=""/172, 0xac) syz_usb_control_io$uac1(0xffffffffffffffff, 0x0, 0x0) syz_usb_disconnect(0xffffffffffffffff) syz_usb_disconnect(0xffffffffffffffff) syz_usb_disconnect(0xffffffffffffffff) syz_usb_disconnect(0xffffffffffffffff) syz_usb_control_io$cdc_ncm(r0, &(0x7f0000000100)={0x14, &(0x7f0000000280)={0x20, 0x2, 0xd5, {0xd5, 0x2, "ffd137fb3409de10112bcd3c86c3f64bbb2853474ea25ac02e5a2700f5d2aee315c4b58f4cb87b1a080c2f10f4ec5985c90d1673542d8400296b9595b847170402268b1a5bcc3d481bce2d869e07d009fa841a98a4080a7298e8389397f8931c5915307d8907f9ceff48dab7b12d353767e0c335bc4aed5c825eb1986e5f2083d8946d9e81d4d1367ec211b30714906319e6e35061dde84d9ae2823faf30b13aa86193210db61c4bb264e453eb78658de7bbba6cbe40ec8a21671a34605a97c36beb7be3adac28dd3c2279744c7074a8b68aef"}}, &(0x7f00000000c0)={0x0, 0x3, 0x1a, {0x1a}}}, &(0x7f0000000500)={0x44, &(0x7f00000001c0)={0x20, 0x18, 0x73, "befeaab0370dee1a00ea5ac5e909907b09845df12bbae6c618972b10c95124f848ed39aa25499e6b30928cbe7b53f0cda2df2ab640dee5fb6aeb31b66d1744f4793c4877cb2b07793ad3d2dcffc02be5749084f230110b6de4a7dd4783f63dad5b47ad5b1c3006502044e66de9f4941f4d50bb"}, &(0x7f0000000140)={0x0, 0xa, 0x1, 0x1}, &(0x7f0000000380)={0x0, 0x8, 0x1}, &(0x7f00000003c0)={0x20, 0x80, 0x1c, {0x4, 0x6, 0xf, 0x3, 0x9, 0x50cc, 0x80, 0x1, 0x6, 0x30, 0x7, 0xd1}}, &(0x7f0000000400)={0x20, 0x85, 0x4, 0x5}, &(0x7f0000000440)={0x20, 0x83, 0x2}, &(0x7f0000000480)={0x20, 0x87, 0x2, 0x2f6}, &(0x7f00000004c0)={0x20, 0x89, 0x2}}) syz_usb_disconnect(r0) syz_usb_connect$uac1(0x3, 0x79, &(0x7f0000000000)={{0x12, 0x1, 0x300, 0x0, 0x0, 0x0, 0x10, 0x1d6b, 0x101, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x67, 0x3, 0x1, 0x91, 0x20, 0x2, "", {{{0x9, 0x4, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, {{0xa, 0x24, 0x1, 0x200, 0xa}}}, {}, {0x9, 0x4, 0x1, 0x1, 0x1, 0x1, 0x2, 0x0, 0x0, {}, {{0x9, 0x5, 0x1, 0x9, 0x20, 0x1, 0xa3, 0x9, {0x7, 0x25, 0x1, 0x4, 0x1, 0x8}}}}, {}, {0x9, 0x4, 0x2, 0x1, 0x1, 0x1, 0x2, 0x0, 0x0, {[@as_header={0x7, 0x24, 0x1, 0x2, 0x8, 0x2}]}, {{0x9, 0x5, 0x82, 0x9, 0x400, 0x6, 0xff, 0x5e, {0x7, 0x25, 0x1, 0xc, 0x1, 0x7fff}}}}}}}}]}}, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x0}) 11.924089574s ago: executing program 3 (id=135): r0 = syz_usb_connect(0x2, 0x24, &(0x7f0000000100)=ANY=[@ANYBLOB="03010000ac0fce405d0500904431000000010902120001000080040904"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$hid(0x0, 0x36, &(0x7f00000011c0)=ANY=[], 0x0) syz_usb_control_io$hid(r1, 0x0, 0x0) syz_usb_control_io$hid(r1, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_control_io$uac1(r0, 0x0, 0x0) syz_usb_control_io$hid(r1, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_control_io$hid(r1, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) r2 = syz_usb_connect$uac3(0x0, 0xa0, &(0x7f0000000000)={{0x12, 0x1, 0x310, 0x0, 0x0, 0x0, 0x40, 0x1235, 0x10, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x8e, 0x3, 0x1, 0x0, 0x20, 0x40, {0x8, 0xb, 0x2, 0x1, 0x1, 0x21, 0x30, 0xc6}, {{{0x9, 0x4, 0x0, 0x0, 0x0, 0x1, 0x1, 0x30, 0x0, {{0xa, 0x24, 0x1, 0x4, 0x2a, 0xfff}, [@output_terminal={0x13, 0x24, 0x3, 0x5, 0x304, 0x2, 0x6, 0x2, 0x2, 0x7, 0x10, 0x2}, @processing_unit={0xd, 0x24, 0x9, 0x2, 0x2, [0x2, 0x1]}]}}, {}, {0x9, 0x4, 0x1, 0x1, 0x1, 0x1, 0x2, 0x30, 0x0, {}, {{0x9, 0x5, 0x1, 0x9, 0x3ff, 0x5, 0xd, 0xb, {0xa, 0x25, 0x25, 0x60, 0xe, 0x8}}}}, {}, {0x9, 0x4, 0x2, 0x1, 0x1, 0x1, 0x2, 0x30, 0x0, {}, {{0x9, 0x5, 0x82, 0x9, 0x3df, 0x2, 0xff, 0x0, {0xa, 0x25, 0x25, 0x5, 0x7, 0x5}}}}}}}}]}}, &(0x7f00000003c0)={0x0, 0x0, 0x0, 0x0}) syz_usb_control_io$uac3(r2, 0x0, 0x0) syz_usb_control_io(r2, 0x0, &(0x7f00000033c0)={0x84, &(0x7f0000002f00)={0x0, 0x31}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000780)={0x84, &(0x7f0000000300)={0x0, 0x14, 0x2, "ff8c"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) 11.067477209s ago: executing program 2 (id=138): r0 = syz_open_dev$char_usb(0xc, 0xb4, 0x7) r1 = syz_usb_connect$hid(0x5, 0x36, &(0x7f00000000c0)=ANY=[@ANYRESDEC=r0], 0x0) syz_usb_control_io$hid(r1, 0x0, 0x0) syz_usb_control_io$hid(r1, &(0x7f0000000040)={0x24, 0x0, 0x0, 0x0, &(0x7f00000001c0)={0x0, 0x22, 0x371, {0x9}}}, &(0x7f0000000080)={0xffffffffffffffeb, 0x0, 0x0, 0x0, 0x0, 0x0}) (async) syz_usb_connect$uac1(0x0, 0x8f, &(0x7f0000000000)=ANY=[], 0x0) 10.48233891s ago: executing program 0 (id=139): r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000050cb5340450c10108e492940a8090902"], 0x0) syz_usb_disconnect(r0) syz_usb_connect(0x0, 0x36, &(0x7f00000003c0)=ANY=[@ANYBLOB="12011003075f37407104020695a401020301090224000242d8000a0904"], &(0x7f0000000840)={0x0, 0x0, 0x0, 0x0}) syz_usb_connect(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="12010000aa612c1018161691ea080102030109022400010000000209046b020256ea089786ff00092cc48700000905820240000000f46df7ec9eca61861bb07beb9cdfe4766cfaf884fddcaab60e92c326cd778e8bc32114a57ea10ef283e92a0848e89a6d5036350f1e92970f94d2b1c5bd9b9743cf3e3e0a178934c14c1da734cd33b124eec9178a9a79b9c78901076d8df5c10066643845f45e06bf9d0cb2d4730f4c49d99b2d720b5657cf1f991d5bab21cfa4450e45e1b6220404cc87fce66173812c09000000ad0714"], 0x0) syz_usb_connect$uac3(0x3, 0x13a, &(0x7f0000000440)={{0x12, 0x1, 0x310, 0x0, 0x0, 0x0, 0x20, 0xa92, 0x1020, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x128, 0x3, 0x1, 0x9, 0x30, 0x1, {0x8, 0xb, 0x0, 0x2, 0x1, 0x1, 0x30, 0x4}, {{{0x9, 0x4, 0x0, 0x0, 0x0, 0x1, 0x1, 0x30, 0x0, {{0xa, 0x24, 0x1, 0x8, 0x37, 0x9fc}, [@input_terminal={0x14, 0x24, 0x2, 0x5, 0x203, 0x6, 0xbe, 0x4, 0x2, 0x3, 0xff, 0x5}, @feature_unit={0x19, 0x24, 0x7, 0x2, 0x4, [0xa, 0x7, 0x1, 0xc, 0x0]}]}}, {}, {0x9, 0x4, 0x1, 0x1, 0x1, 0x1, 0x2, 0x30, 0x0, {[@format_type_ii_ext={0xa, 0x24, 0x2, 0x2, 0x6, 0x7, 0x73, 0x3}, @as_header={0x17, 0x24, 0x1, 0x53, 0x7fff, 0x7, 0x1001, 0x3, 0x8, 0x5, 0x3f}, @as_header={0x17, 0x24, 0x1, 0x1, 0xd, 0x9, 0x2, 0x5, 0xa9, 0x0, 0x3}, @format_type_ii_ext={0xa, 0x24, 0x2, 0x2, 0x0, 0x3, 0x7, 0x3}]}, {{0x9, 0x5, 0x1, 0x9, 0x10, 0x7, 0x2, 0x3, {0xa, 0x25, 0x25, 0x8, 0x2d, 0xfff1}}}}, {}, {0x9, 0x4, 0x2, 0x1, 0x1, 0x1, 0x2, 0x30, 0x0, {[@format_type_i_discrete={0x11, 0x24, 0x2, 0x1, 0x4, 0x2, 0xe, 0x8, "4d9b00c9fcd7d55133"}, @as_header={0x17, 0x24, 0x1, 0x8, 0x7, 0x2, 0x0, 0x7, 0x2, 0x1, 0x5d}, @format_type_ii_ext={0xa, 0x24, 0x2, 0x2, 0xa, 0x3, 0x3, 0x9}, @format_type_i_continuous={0xd, 0x24, 0x2, 0x1, 0xf0, 0x2, 0x9, 0x2, "1c43", "eb4004"}, @format_type_i_discrete={0xc, 0x24, 0x2, 0x1, 0xe7, 0x3, 0xf7, 0x21, "9456218f"}]}, {{0x9, 0x5, 0x82, 0x9, 0x400, 0x4, 0xd, 0x5, {0xa, 0x25, 0x25, 0x6a, 0x5, 0x9}}}}}}}}]}}, &(0x7f0000000600)={0xa, &(0x7f0000000580)={0xa, 0x6, 0x300, 0x5, 0x40, 0x0, 0xff, 0x5}, 0x2a, &(0x7f00000005c0)={0x5, 0xf, 0x2a, 0x3, [@ext_cap={0x7, 0x10, 0x2, 0x2, 0x2, 0x3, 0x9}, @ss_cap={0xa, 0x10, 0x3, 0x0, 0x1, 0x8c, 0x40, 0x7}, @ss_container_id={0x14, 0x10, 0x4, 0x3, "f6d90f2dc1674feaf6072c9706e508dd"}]}}) syz_usb_connect$uac1(0x0, 0xb1, &(0x7f0000000100)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x10, 0xbda, 0x4014, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x9f, 0x3, 0x1, 0x0, 0x20, 0xa, "", {{{0x9, 0x4, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, {{0xa, 0x24, 0x1, 0x7fff, 0x27}, [@extension_unit={0x8, 0x24, 0x8, 0x1, 0x4, 0xcf, "c5"}, @extension_unit={0xb, 0x24, 0x8, 0x1, 0x8f, 0x1d, "53f6e2b4"}, @processing_unit={0xa, 0x24, 0x7, 0x4, 0x5, 0x73, "a7aae6"}]}}, {}, {0x9, 0x4, 0x1, 0x1, 0x1, 0x1, 0x2, 0x0, 0x0, {[@format_type_i_ext={0x9, 0x24, 0x2, 0x1, 0x4, 0x1, 0x4, 0x3, 0x7}, @as_header={0x7, 0x24, 0x1, 0x4, 0x4, 0x2005}]}, {{0x9, 0x5, 0x1, 0x9, 0x8, 0x1, 0xae, 0x2, {0x7, 0x25, 0x1, 0xc, 0x1, 0x6d}}}}, {}, {0x9, 0x4, 0x2, 0x1, 0x1, 0x1, 0x2, 0x0, 0x0, {[@format_type_i_ext={0x9, 0x24, 0x2, 0x1, 0xfa, 0x5, 0x2, 0x3, 0xf8}, @format_type_i_ext={0x9, 0x24, 0x2, 0x1, 0xf7, 0xba, 0x6, 0x8e, 0xfa}]}, {{0x9, 0x5, 0x82, 0x9, 0x8, 0x5, 0x8, 0x5, {0x7, 0x25, 0x1, 0x4, 0xa0, 0x2}}}}}}}}]}}, &(0x7f0000000400)={0xa, &(0x7f00000001c0)={0xa, 0x6, 0x250, 0xc, 0x8, 0xe8, 0x8, 0xb}, 0x12, &(0x7f0000000200)={0x5, 0xf, 0x7, 0x3, [@ext_cap={0x7, 0x10, 0x2, 0xc, 0xd, 0x2, 0x8}, @ptm_cap={0x3}, @ptm_cap={0x3}]}, 0x3, [{0x46, &(0x7f00000006c0)=@string={0x46, 0x3, "39f20ea992a62962b0cfbfe999a25702679c290d910c024e40ca6fdfe245cecfa8a57575bf285d3ae45b8bb9a522ab474163e65c6cd9b3f1525b32ab41675456bb578c50"}}, {0x65, &(0x7f0000000640)=@string={0x65, 0x3, "f249959ee913ce4bf17a505933a61f90ef3d6777fd85a3f189c2b3c25edc6930704f4276866a8e1c3342422247742d383824e1d51771300aaf77486bd81a21badf3d90521a17a9fbc8a0765adf5b02a9c9995582e2e4160683bae2f7eb6183a44006bd"}}, {0xe4, &(0x7f00000002c0)=@string={0x1c, 0x3, "a8703c19578dd90c719f92c7a65795aff2123f110f1b08f7cf7f2d459119df5d139c90c62a044130d181e5cd9a886a0dacbcc4009818b43580ee9ecc568479e3ddaff976366d43a8851abd2edeaabd2888a267b134b252443fbe32f398e04a550e29c819207488d0f440de0ec29957a069cecbb60787ff03f37deb6dae861f31ece92a65b71a15111042628469bfed7b981c31fef49bba6a90e00a0aeacc912d4d34ad0ebb32fc521020080dd74af9283ce6ec4fb58e93d230e0721d480a84ff5eeb5e800e1176227d2ddedf95857cd8a141089fce68606ec4dcd2a81303e7a9dca4"}}]}) 10.142939232s ago: executing program 4 (id=140): r0 = syz_usb_connect$rtl8150(0x4, 0x3f, &(0x7f0000000000)={{0x12, 0x1, 0x200, 0xff, 0xff, 0xff, 0x40, 0xbda, 0x8150, 0x0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x2d}}]}}, 0x0) syz_usb_control_io$rtl8150(r0, 0x0, 0x0) (async) syz_usb_ep_write(r0, 0x81, 0x0, 0x0) syz_usb_connect(0x3, 0x36, &(0x7f0000000800)=ANY=[@ANYBLOB="1201000185f1d810fd0b2601e4bd01020301090224000101ad800309043a0602d1d5b213090508020004fe00090905bd02"], 0x0) syz_usb_control_io$cdc_ncm(0xffffffffffffffff, 0x0, 0x0) (async) syz_usb_control_io$rtl8150(r0, 0x0, &(0x7f0000001680)={0x2c, 0x0, 0x0, 0x0, 0x0, &(0x7f0000001640)={0x40, 0x5, 0x2, "2f8b"}}) (async) syz_usb_control_io(r0, 0x0, &(0x7f0000002580)={0x84, 0x0, 0x0, 0x0, &(0x7f0000000040)={0x20, 0x0, 0x4, {0x1, 0x1}}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (async) syz_usb_control_io(r0, 0x0, &(0x7f0000003280)={0x84, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, &(0x7f0000003040)={0x40, 0xb, 0x2, '68'}, &(0x7f0000003080)={0x40, 0xf, 0x2, 0x9}, 0x0, 0x0, 0x0, 0x0, 0x0, &(0x7f0000003200)={0x40, 0x1e, 0x1}, 0x0}) (async) syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0) 9.849267402s ago: executing program 1 (id=141): r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000340)=ANY=[@ANYBLOB="12010000000000406c256d0000000000000109022400010000000009040000010300000009210000000122050009058103"], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_connect(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000068e04d206f0e2c586831010203010902710001000000000904000002ff47d000090509e702008000040905", @ANYBLOB="78e7"], 0x0) syz_usb_control_io(r0, &(0x7f0000000000)={0x2c, &(0x7f0000000300)=ANY=[@ANYBLOB="00dc6b"], 0x0, 0x0, 0x0, 0x0}, 0x0) r1 = syz_usb_connect_ath9k(0x3, 0x5a, &(0x7f0000000100)={{0x12, 0x1, 0x200, 0xff, 0xff, 0xff, 0x40, 0xcf3, 0x9271, 0x108, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x48}}]}}, 0x0) syz_usb_control_io(r1, &(0x7f0000000480)={0x2c, &(0x7f0000000180)={0x0, 0x9, 0x40, {0x40, 0xd, "d6dfe1e97c6479055c2b1562ddf2f1eaf7711c31783d8d5491f5c919db2aadaac1f465dbc95a0d5a499507bd42947dcf70c6b73f5eb7d9ee2e9082b95646"}}, &(0x7f0000000380)={0x0, 0x3, 0xb6, @string={0xb6, 0x3, "fa0fa59536752425d81cc5689e02129c1facf11a923a2403fb4acd9a1a1ea0984612c7c824618bedeff55483b9d786ca0dc503e492612268f2b1b248b5594a99b98e7f80ea1ddec16615b47b5c465caf2bd79f8f85e846caae1ddf5ad908cf0bcb8ff7e4fe115df8d3e13797abd1253c89737297acebe2063a53632f653050faaae030e11991517d97976a47d407f3c74aacaac01b9de760fc6a6a3734e14448bcc759f326ee965ee8fba062304fd18c65834701"}}, &(0x7f0000000200)={0x0, 0xf, 0x32, {0x5, 0xf, 0x32, 0x4, [@ptm_cap={0x3}, @wireless={0xb, 0x10, 0x1, 0x2, 0x50, 0x9, 0x9, 0x4, 0x5}, @ssp_cap={0x1c, 0x10, 0xa, 0x5, 0x4, 0x101, 0xf00, 0x5, [0x3f6f, 0x0, 0xf0, 0x0]}, @ptm_cap={0x3}]}}, &(0x7f0000000280)={0x20, 0x29, 0xf, {0xf, 0x29, 0x1, 0x4, 0x7f, 0x2, "aacbd324", "dfd4b85e"}}, &(0x7f0000000440)={0x20, 0x2a, 0xc, {0xc, 0x2a, 0x6, 0x3, 0x7, 0x9, 0xf, 0x4, 0x2}}}, &(0x7f00000009c0)={0x84, &(0x7f00000004c0)={0x0, 0x31, 0x40, "db845cc4210cfbeecddc41188e1ecc48f3cc7edc5667840c3a27ee9619f32ad2df9deaae90a27b18ca04e855896fdc9dae25b5ccb484fdc22b890819ae14049c"}, &(0x7f0000000540)={0x0, 0xa, 0x1, 0x1}, &(0x7f0000000580)={0x0, 0x8, 0x1, 0x40}, &(0x7f0000000600)={0x20, 0x0, 0x4, {0x0, 0x3}}, &(0x7f0000000640)={0x20, 0x0, 0x8, {0x160, 0x20, [0xff00]}}, &(0x7f0000000680)={0x40, 0x7, 0x2, 0xe3d}, &(0x7f0000000700)={0x40, 0x9, 0x1, 0x5d}, &(0x7f0000000740)={0x40, 0xb, 0x2, "a608"}, &(0x7f0000000780)={0x40, 0xf, 0x2, 0x1c3}, &(0x7f0000000800)={0x40, 0x13, 0x6, @remote}, &(0x7f0000000840)={0x40, 0x17, 0x6, @link_local={0x1, 0x80, 0xc2, 0x0, 0x0, 0x1}}, &(0x7f0000000880)={0x40, 0x19, 0x2, ' 48 0f b9 3a e8 aa d8 e5 fe 5b 5d e9 43 89 9f 04 85 ed 74 3a e8 [ 164.229619][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 03! [ 164.229657][ T2439] RSP: 0018:ffffc9000516f890 EFLAGS: 00010293 [ 164.229685][ T2439] RAX: 0000000000000000 RBX: ffff88811bbcc61c RCX: ffffffff82cbe12b [ 164.229706][ T2439] RDX: ffff888114f61d00 RSI: ffffffff82cbe145 RDI: ffffffff8af44dd0 [ 164.229726][ T2439] RBP: 0000000000000004 R08: 0000000000000005 R09: 0000000000000004 [ 164.229745][ T2439] R10: 0000000000000004 R11: 0000000000000000 R12: 1ffff92000a2df17 [ 164.229764][ T2439] R13: ffff88811bbcc61c R14: 0000000000000000 R15: 0000000000000000 [ 164.235435][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification bc! [ 164.241287][ T2439] FS: 0000000000000000(0000) GS:ffff8882686d3000(0000) knlGS:0000000000000000 [ 164.247675][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 53! [ 164.267126][ T2439] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 164.274504][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 03! [ 164.280410][ T2439] CR2: 00007f2288985900 CR3: 0000000120a94000 CR4: 00000000003506f0 [ 164.289045][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 0f! [ 164.296399][ T2439] Call Trace: [ 164.296418][ T2439] [ 164.304699][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 13! [ 164.312554][ T2439] ref_tracker_free+0x5cd/0x6c0 [ 164.320738][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 17! [ 164.327748][ T2439] ? __pfx_ref_tracker_free+0x10/0x10 [ 164.337053][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 19! [ 164.344153][ T2439] ? netif_freeze_queues+0x183/0x1f0 [ 164.351105][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 1a! [ 164.358130][ T2439] dev_deactivate_many+0x288/0xc40 [ 164.366314][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 1c! [ 164.373391][ T2439] ? __pfx_dev_deactivate_many+0x10/0x10 [ 164.376869][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 1e! [ 164.379611][ T2439] ? ref_tracker_free+0x2f1/0x6c0 [ 164.386996][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 03! [ 164.391702][ T2439] ? __pfx_ref_tracker_free+0x10/0x10 [ 164.399555][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 20! [ 164.404267][ T2439] dev_deactivate+0xf8/0x1c0 [ 164.411875][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 03! [ 164.416788][ T2439] ? __pfx_dev_deactivate+0x10/0x10 [ 164.424281][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 6e! [ 164.429245][ T2439] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 164.436618][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 52! [ 164.442080][ T2439] linkwatch_do_dev+0xce/0x110 [ 164.449546][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 06! [ 164.454374][ T2439] __linkwatch_run_queue+0x3a5/0x810 [ 164.461784][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 0f! [ 164.466989][ T2439] ? __pfx___linkwatch_run_queue+0x10/0x10 [ 164.474470][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 03! [ 164.478845][ T2439] linkwatch_event+0x8f/0xc0 [ 164.486206][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 03! [ 164.491225][ T2439] ? __pfx_linkwatch_event+0x10/0x10 [ 164.498614][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 96! [ 164.504406][ T2439] ? rcu_is_watching+0x12/0xc0 [ 164.511844][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 92! [ 164.516424][ T2439] process_one_work+0x9d7/0x1920 [ 164.524287][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 0a! [ 164.529002][ T2439] ? __pfx_process_one_work+0x10/0x10 [ 164.536859][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 9e! [ 164.541995][ T2439] ? __pfx_linkwatch_event+0x10/0x10 [ 164.549360][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 6e! [ 164.553760][ T2439] worker_thread+0x5da/0xe40 [ 164.561163][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 58! [ 164.566281][ T2439] ? __pfx_worker_thread+0x10/0x10 [ 164.573681][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification e4! [ 164.578298][ T2439] ? kthread+0x13a/0x450 [ 164.585690][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification ad! [ 164.590430][ T2439] ? __pfx_worker_thread+0x10/0x10 [ 164.597914][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 88! [ 164.603336][ T2439] kthread+0x370/0x450 [ 164.610748][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 03! [ 164.615858][ T2439] ? __pfx_kthread+0x10/0x10 [ 164.623443][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 85! [ 164.627794][ T2439] ret_from_fork+0x6c3/0xcb0 [ 164.635275][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 14! [ 164.640175][ T2439] ? __pfx_ret_from_fork+0x10/0x10 [ 164.647546][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 87! [ 164.651624][ T2439] ? __switch_to+0x7aa/0x1120 [ 164.659051][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 0a! [ 164.663910][ T2439] ? __pfx_kthread+0x10/0x10 [ 164.672113][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification 08! [ 164.675212][ T2439] ret_from_fork_asm+0x1a/0x30 [ 164.682619][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification a1! [ 164.687070][ T2439] [ 164.694462][ C1] cdc_ether 1-1:1.0 usb0: CDC: unexpected notification a0! [ 164.698904][ T2439] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 164.698926][ T2439] CPU: 0 UID: 0 PID: 2439 Comm: kworker/u8:9 Not tainted syzkaller #0 PREEMPT(full) [ 164.698956][ T2439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 164.698973][ T2439] Workqueue: events_unbound linkwatch_event [ 164.699009][ T2439] Call Trace: [ 164.699019][ T2439] [ 164.699029][ T2439] dump_stack_lvl+0x100/0x190 [ 164.699065][ T2439] vpanic+0x552/0x970 [ 164.699095][ T2439] ? __pfx_vpanic+0x10/0x10 [ 164.699135][ T2439] panic+0xd1/0xe0 [ 164.699164][ T2439] ? __pfx_panic+0x10/0x10 [ 164.699205][ T2439] ? check_panic_on_warn+0x1f/0x90 [ 164.699237][ T2439] check_panic_on_warn.cold+0x19/0x34 [ 164.699270][ T2439] ? refcount_warn_saturate+0x7c/0x130 [ 164.699308][ T2439] __warn.cold+0x191/0x348 [ 164.699343][ T2439] __report_bug+0x296/0x3d0 [ 164.699374][ T2439] ? refcount_warn_saturate+0x7c/0x130 [ 164.699416][ T2439] ? __pfx___report_bug+0x10/0x10 [ 164.699447][ T2439] ? lockdep_unlock+0x5a/0xc0 [ 164.699479][ T2439] ? __lock_acquire+0xd73/0x2630 [ 164.699518][ T2439] ? refcount_warn_saturate+0x75/0x130 [ 164.699557][ T2439] ? refcount_warn_saturate+0x5b/0x130 [ 164.699611][ T2439] report_bug_entry+0xe1/0x290 [ 164.699653][ T2439] ? refcount_warn_saturate+0x7c/0x130 [ 164.699692][ T2439] handle_bug+0x1c9/0x2a0 [ 164.699730][ T2439] exc_invalid_op+0x17/0x50 [ 164.699768][ T2439] asm_exc_invalid_op+0x1a/0x20 [ 164.699794][ T2439] RIP: 0010:refcount_warn_saturate+0x7c/0x130 [ 164.699835][ T2439] Code: 60 31 af 87 e8 e5 d3 e5 fe 83 fd 02 0f 84 a1 00 00 00 76 27 83 fd 03 74 7d 83 fd 04 75 3e e8 bb d8 e5 fe 48 8d 3d 84 6c 28 08 <67> 48 0f b9 3a e8 aa d8 e5 fe 5b 5d e9 43 89 9f 04 85 ed 74 3a e8 [ 164.699860][ T2439] RSP: 0018:ffffc9000516f890 EFLAGS: 00010293 [ 164.699881][ T2439] RAX: 0000000000000000 RBX: ffff88811bbcc61c RCX: ffffffff82cbe12b [ 164.699898][ T2439] RDX: ffff888114f61d00 RSI: ffffffff82cbe145 RDI: ffffffff8af44dd0 [ 164.699916][ T2439] RBP: 0000000000000004 R08: 0000000000000005 R09: 0000000000000004 [ 164.699932][ T2439] R10: 0000000000000004 R11: 0000000000000000 R12: 1ffff92000a2df17 [ 164.699948][ T2439] R13: ffff88811bbcc61c R14: 0000000000000000 R15: 0000000000000000 [ 164.699974][ T2439] ? refcount_warn_saturate+0x5b/0x130 [ 164.700012][ T2439] ? refcount_warn_saturate+0x75/0x130 [ 164.700058][ T2439] ref_tracker_free+0x5cd/0x6c0 [ 164.700095][ T2439] ? __pfx_ref_tracker_free+0x10/0x10 [ 164.700143][ T2439] ? netif_freeze_queues+0x183/0x1f0 [ 164.700187][ T2439] dev_deactivate_many+0x288/0xc40 [ 164.700228][ T2439] ? __pfx_dev_deactivate_many+0x10/0x10 [ 164.700264][ T2439] ? ref_tracker_free+0x2f1/0x6c0 [ 164.700299][ T2439] ? __pfx_ref_tracker_free+0x10/0x10 [ 164.700339][ T2439] dev_deactivate+0xf8/0x1c0 [ 164.700374][ T2439] ? __pfx_dev_deactivate+0x10/0x10 [ 164.700417][ T2439] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 164.700454][ T2439] linkwatch_do_dev+0xce/0x110 [ 164.700484][ T2439] __linkwatch_run_queue+0x3a5/0x810 [ 164.700515][ T2439] ? __pfx___linkwatch_run_queue+0x10/0x10 [ 164.700556][ T2439] linkwatch_event+0x8f/0xc0 [ 164.700583][ T2439] ? __pfx_linkwatch_event+0x10/0x10 [ 164.700613][ T2439] ? rcu_is_watching+0x12/0xc0 [ 164.700651][ T2439] process_one_work+0x9d7/0x1920 [ 164.700698][ T2439] ? __pfx_process_one_work+0x10/0x10 [ 164.700739][ T2439] ? __pfx_linkwatch_event+0x10/0x10 [ 164.700771][ T2439] worker_thread+0x5da/0xe40 [ 164.700811][ T2439] ? __pfx_worker_thread+0x10/0x10 [ 164.700843][ T2439] ? kthread+0x13a/0x450 [ 164.700868][ T2439] ? __pfx_worker_thread+0x10/0x10 [ 164.700896][ T2439] kthread+0x370/0x450 [ 164.700923][ T2439] ? __pfx_kthread+0x10/0x10 [ 164.700952][ T2439] ret_from_fork+0x6c3/0xcb0 [ 164.700991][ T2439] ? __pfx_ret_from_fork+0x10/0x10 [ 164.701029][ T2439] ? __switch_to+0x7aa/0x1120 [ 164.701056][ T2439] ? __pfx_kthread+0x10/0x10 [ 164.701086][ T2439] ret_from_fork_asm+0x1a/0x30 [ 164.701142][ T2439] [ 165.139407][ T2439] Kernel Offset: disabled [ 165.143733][ T2439] Rebooting in 86400 seconds..