}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x20}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xeb6f}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}]}, 0xb4}, 0x1, 0x0, 0x0, 0x20004840}, 0x80000)
r8 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r9 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r10 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000380)='/sys/kernel/debug/binder/state\x00', 0x0, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r9, &(0x7f0000000500)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x30, r4, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r10}, {0x8, 0x1, r5}]}]}, 0x30}, 0x1, 0x0, 0x0, 0x4008040}, 0x40)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r8, @ANYBLOB="01000000000000000000010000000c00030000000000000000ff6b00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:23 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1573.869628] nbd: must specify at least one socket
19:06:23 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:23 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c16030000000000000000000c00078008000100831c71386613943e495f05591175f5c9e1db098868b371745d563d17b01ef5933d32c155f448befce410", @ANYRES32, @ANYBLOB="0c00020067f7100000ad0000"], 0x38}}, 0x0)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x10200, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000001c0)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x30, r5, 0x100, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x30}, 0x1, 0x0, 0x0, 0x4004010}, 0x80)

19:06:23 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:23 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:23 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:23 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r5 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000040), 0x200000, 0x0)
r6 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
r7 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f00000000c0), 0x101400, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x66f404d45ee4de69}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0xb4, r4, 0xc00, 0x70bd2a, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x3c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r5}, {0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x20}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xeb6f}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}]}, 0xb4}, 0x1, 0x0, 0x0, 0x20004840}, 0x80000)
r8 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r9 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r10 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000380)='/sys/kernel/debug/binder/state\x00', 0x0, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r9, &(0x7f0000000500)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x30, r4, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r10}, {0x8, 0x1, r5}]}]}, 0x30}, 0x1, 0x0, 0x0, 0x4008040}, 0x40)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r8, @ANYBLOB="01000000000000000000010000000c00030000000000000000ff6b00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000040), 0x200000, 0x0) (async)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) (async)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f00000000c0), 0x101400, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x66f404d45ee4de69}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0xb4, r4, 0xc00, 0x70bd2a, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x3c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r5}, {0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x20}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xeb6f}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}]}, 0xb4}, 0x1, 0x0, 0x0, 0x20004840}, 0x80000) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000380)='/sys/kernel/debug/binder/state\x00', 0x0, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r9, &(0x7f0000000500)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x30, r4, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r10}, {0x8, 0x1, r5}]}]}, 0x30}, 0x1, 0x0, 0x0, 0x4008040}, 0x40) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r8, @ANYBLOB="01000000000000000000010000000c00030000000000000000ff6b00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)

[ 1573.924716] nbd: must specify an index to disconnect
[ 1573.939004] nbd: must specify at least one socket
[ 1573.946680] nbd: must specify at least one socket
19:06:23 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000300000000000000000014000780", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

[ 1573.973519] nbd: must specify at least one socket
19:06:23 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

19:06:23 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:23 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x30, r2, 0x10, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x30}, 0x1, 0x0, 0x0, 0x80}, 0x80)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1573.999770] nbd: must specify an index to disconnect
[ 1574.008208] nbd: must specify an index to disconnect
[ 1574.029984] nbd: must specify at least one socket
19:06:23 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c16030000000000000000000c00078008000100831c71386613943e495f05591175f5c9e1db098868b371745d563d17b01ef5933d32c155f448befce410", @ANYRES32, @ANYBLOB="0c00020067f7100000ad0000"], 0x38}}, 0x0) (async)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x10200, 0x0) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000001c0)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x30, r5, 0x100, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x30}, 0x1, 0x0, 0x0, 0x4004010}, 0x80)

19:06:23 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000300000000000000000014000780", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

[ 1574.045720] nbd: must specify a size in bytes for the device
19:06:23 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x30, r2, 0x10, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x30}, 0x1, 0x0, 0x0, 0x80}, 0x80)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:23 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r5 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000040), 0x200000, 0x0)
r6 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
r7 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f00000000c0), 0x101400, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x66f404d45ee4de69}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0xb4, r4, 0xc00, 0x70bd2a, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x3c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r5}, {0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x20}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xeb6f}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}]}, 0xb4}, 0x1, 0x0, 0x0, 0x20004840}, 0x80000)
r8 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r9 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r10 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000380)='/sys/kernel/debug/binder/state\x00', 0x0, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r9, &(0x7f0000000500)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x30, r4, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r10}, {0x8, 0x1, r5}]}]}, 0x30}, 0x1, 0x0, 0x0, 0x4008040}, 0x40)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r8, @ANYBLOB="01000000000000000000010000000c00030000000000000000ff6b00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000040), 0x200000, 0x0) (async)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) (async)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f00000000c0), 0x101400, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x66f404d45ee4de69}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0xb4, r4, 0xc00, 0x70bd2a, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x3c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r5}, {0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x20}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xeb6f}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}]}, 0xb4}, 0x1, 0x0, 0x0, 0x20004840}, 0x80000) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000380)='/sys/kernel/debug/binder/state\x00', 0x0, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r9, &(0x7f0000000500)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x30, r4, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r10}, {0x8, 0x1, r5}]}]}, 0x30}, 0x1, 0x0, 0x0, 0x4008040}, 0x40) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r8, @ANYBLOB="01000000000000000000010000000c00030000000000000000ff6b00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)

19:06:23 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
r2 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000140), 0x1, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000340), r0)
r3 = syz_open_dev$vcsa(&(0x7f0000000200), 0x10000, 0x200000)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000300)={0x34, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x34}, 0x1, 0x0, 0x0, 0x808c5}, 0x4014)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
geteuid()
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000004c0)={&(0x7f0000000380)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000480)={&(0x7f00000003c0)={0x88, r1, 0x10, 0x70bd25, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xc39}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x3c, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8, 0x1, r4}, {0x8, 0x1, r2}, {0x8, 0x1, r2}, {0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8, 0x1, r6}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x200}]}, 0x88}, 0x1, 0x0, 0x0, 0x20000090}, 0x40040)
ioctl$VHOST_VSOCK_SET_GUEST_CID(r5, 0x4008af60, &(0x7f00000002c0)={@my=0x1})
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000000c0)={&(0x7f0000000500)=ANY=[@ANYBLOB="14e4f9433d9a7000", @ANYRES16=0x0, @ANYBLOB="000226bd7000fddbdf25050000f7"], 0x14}, 0x1, 0x0, 0x0, 0x4894}, 0x4000010)

19:06:23 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:23 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="dc1f5100", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:23 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c16030000000000000000000c00078008000100831c71386613943e495f05591175f5c9e1db098868b371745d563d17b01ef5933d32c155f448befce410", @ANYRES32, @ANYBLOB="0c00020067f7100000ad0000"], 0x38}}, 0x0)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x10200, 0x0) (async)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x10200, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) (async)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000001c0)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x30, r5, 0x100, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x30}, 0x1, 0x0, 0x0, 0x4004010}, 0x80)

19:06:23 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff) (async)
r2 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000140), 0x1, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000340), r0) (async)
r3 = syz_open_dev$vcsa(&(0x7f0000000200), 0x10000, 0x200000) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000300)={0x34, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x34}, 0x1, 0x0, 0x0, 0x808c5}, 0x4014) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
geteuid() (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000004c0)={&(0x7f0000000380)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000480)={&(0x7f00000003c0)={0x88, r1, 0x10, 0x70bd25, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xc39}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x3c, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8, 0x1, r4}, {0x8, 0x1, r2}, {0x8, 0x1, r2}, {0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8, 0x1, r6}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x200}]}, 0x88}, 0x1, 0x0, 0x0, 0x20000090}, 0x40040) (async)
ioctl$VHOST_VSOCK_SET_GUEST_CID(r5, 0x4008af60, &(0x7f00000002c0)={@my=0x1})
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000000c0)={&(0x7f0000000500)=ANY=[@ANYBLOB="14e4f9433d9a7000", @ANYRES16=0x0, @ANYBLOB="000226bd7000fddbdf25050000f7"], 0x14}, 0x1, 0x0, 0x0, 0x4894}, 0x4000010)

19:06:23 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000300000000000000000014000780", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

[ 1574.115805] nbd: must specify an index to disconnect
[ 1574.126819] nbd: must specify an index to disconnect
[ 1574.136464] nbd: must specify a size in bytes for the device
[ 1574.159242] nbd: must specify at least one socket
19:06:23 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x30, r2, 0x10, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x30}, 0x1, 0x0, 0x0, 0x80}, 0x80) (async)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x30, r2, 0x10, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x30}, 0x1, 0x0, 0x0, 0x80}, 0x80)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:23 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1574.218211] nbd: must specify at least one socket
19:06:23 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="dc1f5100", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:23 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff) (async)
r2 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000140), 0x1, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000340), r0) (async)
r3 = syz_open_dev$vcsa(&(0x7f0000000200), 0x10000, 0x200000) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000300)={0x34, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x34}, 0x1, 0x0, 0x0, 0x808c5}, 0x4014)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0) (async)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
geteuid() (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000004c0)={&(0x7f0000000380)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000480)={&(0x7f00000003c0)={0x88, r1, 0x10, 0x70bd25, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xc39}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x3c, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8, 0x1, r4}, {0x8, 0x1, r2}, {0x8, 0x1, r2}, {0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8, 0x1, r6}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x200}]}, 0x88}, 0x1, 0x0, 0x0, 0x20000090}, 0x40040) (async)
ioctl$VHOST_VSOCK_SET_GUEST_CID(r5, 0x4008af60, &(0x7f00000002c0)={@my=0x1}) (async)
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000000c0)={&(0x7f0000000500)=ANY=[@ANYBLOB="14e4f9433d9a7000", @ANYRES16=0x0, @ANYBLOB="000226bd7000fddbdf25050000f7"], 0x14}, 0x1, 0x0, 0x0, 0x4894}, 0x4000010)

19:06:23 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000140007800800", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:23 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0x54, r3, 0x20, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x80000000}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}, {0x8, 0x1, r5}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1180000000000000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x54}, 0x1, 0x0, 0x0, 0x814}, 0x48c1)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1574.242930] nbd: must specify an index to disconnect
[ 1574.260665] nbd: must specify a size in bytes for the device
19:06:23 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)

19:06:23 executing program 5:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="dc1f5100", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:23 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0x54, r3, 0x20, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x80000000}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}, {0x8, 0x1, r5}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1180000000000000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x54}, 0x1, 0x0, 0x0, 0x814}, 0x48c1) (async)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:23 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x34, r5, 0x100, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x80}, 0x1)

[ 1574.318955] nbd: must specify a size in bytes for the device
19:06:23 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000140007800800", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:23 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000000078008000100", @ANYRES32, @ANYBLOB="089786aa6fd3c38f46fa42d5d5f8593b1200", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:23 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:23 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0e00060000000000000000000c00e733f8729f9cf7aa6faf93c002000000000000005600"], 0x4c}}, 0x0)

19:06:23 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="9bbbf4ea0800000000000034baacfb31eedc4d43d100e10a0000000000000300000100000066c88eb1092cb5e6ff4d3e3c25a7e264973d413ed3aadb7b249fbe5dc21195148074ad4a98afd92347783793bfa983b814cd1e889b7ab7b57a78", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x38, 0x0, 0x400, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x4}]}, 0x38}, 0x1, 0x0, 0x0, 0x200480c0}, 0x10)

19:06:23 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0x54, r3, 0x20, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x80000000}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}, {0x8, 0x1, r5}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1180000000000000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x54}, 0x1, 0x0, 0x0, 0x814}, 0x48c1) (async)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:23 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x34, r5, 0x100, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x80}, 0x1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) (async)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x34, r5, 0x100, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x80}, 0x1) (async)

19:06:23 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000000078008000100", @ANYRES32, @ANYBLOB="089786aa6fd3c38f46fa42d5d5f8593b1200", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:23 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000140007800800", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:23 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0e00060000000000000000000c00e733f8729f9cf7aa6faf93c002000000000000005600"], 0x4c}}, 0x0)

[ 1574.419448] nbd: must specify a size in bytes for the device
[ 1574.431308] nbd: must specify at least one socket
[ 1574.442640] nbd: must specify a size in bytes for the device
[ 1574.455305] nbd: must specify an index to disconnect
[ 1574.509882] nbd: must specify at least one socket
19:06:23 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000000078008000100", @ANYRES32, @ANYBLOB="089786aa6fd3c38f46fa42d5d5f8593b1200", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:23 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES8, @ANYRESDEC=r0, @ANYRES32, @ANYBLOB="0c7e02000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x2000c001}, 0x4010)

[ 1574.532962] nbd: must specify an index to disconnect
19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="9bbbf4ea0800000000000034baacfb31eedc4d43d100e10a0000000000000300000100000066c88eb1092cb5e6ff4d3e3c25a7e264973d413ed3aadb7b249fbe5dc21195148074ad4a98afd92347783793bfa983b814cd1e889b7ab7b57a78", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x38, 0x0, 0x400, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x4}]}, 0x38}, 0x1, 0x0, 0x0, 0x200480c0}, 0x10)

19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0e00060000000000000000000c00e733f8729f9cf7aa6faf93c002000000000000005600"], 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0e00060000000000000000000c00e733f8729f9cf7aa6faf93c002000000000000005600"], 0x4c}}, 0x0) (async)

19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x34, r5, 0x100, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x80}, 0x1)

[ 1574.553376] nbd: must specify a size in bytes for the device
[ 1574.575146] nbd: must specify at least one socket
19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000300000000000000000014000780080001", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:24 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r2, 0x2e5eb3e7e2dcc196, 0x70bd2a, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x7, 0xa, '\xa7#)'}]}, 0x1c}, 0x1, 0x0, 0x0, 0x800}, 0x24040841)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="9bbbf4ea0800000000000034baacfb31eedc4d43d100e10a0000000000000300000100000066c88eb1092cb5e6ff4d3e3c25a7e264973d413ed3aadb7b249fbe5dc21195148074ad4a98afd92347783793bfa983b814cd1e889b7ab7b57a78", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x38, 0x0, 0x400, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x4}]}, 0x38}, 0x1, 0x0, 0x0, 0x200480c0}, 0x10) (async)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x38, 0x0, 0x400, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x4}]}, 0x38}, 0x1, 0x0, 0x0, 0x200480c0}, 0x10)

19:06:24 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES8, @ANYRESDEC=r0, @ANYRES32, @ANYBLOB="0c7e02000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x2000c001}, 0x4010) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES8, @ANYRESDEC=r0, @ANYRES32, @ANYBLOB="0c7e02000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x2000c001}, 0x4010)

[ 1574.609813] nbd: must specify a size in bytes for the device
19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
openat$vhost_vsock(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)

19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000300000000000000000014000780080001", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:24 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r2, 0x2e5eb3e7e2dcc196, 0x70bd2a, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x7, 0xa, '\xa7#)'}]}, 0x1c}, 0x1, 0x0, 0x0, 0x800}, 0x24040841) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:24 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES8, @ANYRESDEC=r0, @ANYRES32, @ANYBLOB="0c7e02000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x2000c001}, 0x4010)

[ 1574.655764] nbd: must specify a size in bytes for the device
[ 1574.671606] nbd: must specify an index to disconnect
[ 1574.677527] nbd: must specify a size in bytes for the device
[ 1574.690080] nbd: must specify a size in bytes for the device
19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x70bd29, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x4c800)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="2b00023707b36f8000000000"], 0x38}}, 0x0)

19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
openat$vhost_vsock(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)

19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x70bd29, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x4c800) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000300000000000000000014000780080001", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:24 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f00000005c0)={&(0x7f0000000500)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000580)={&(0x7f0000000540)={0x14, r3, 0x20, 0x70bd26, 0x25dfdbff}, 0x14}, 0x1, 0x0, 0x0, 0x4000}, 0x40080)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100000}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0xa8, r5, 0x4, 0x70bd2d, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7ad8}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x209}]}, 0xa8}, 0x1, 0x0, 0x0, 0x410}, 0x20004000)
r7 = openat$nvram(0xffffffffffffff9c, &(0x7f0000000300), 0x268102, 0x0)
r8 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000340)='/proc/cpuinfo\x00', 0x0, 0x0)
r9 = openat$zero(0xffffffffffffff9c, &(0x7f0000000380), 0x80, 0x0)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f00000004c0)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000480)={&(0x7f00000003c0)={0x88, r4, 0x8, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8, 0x1, r6}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x20}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1a}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7866dc5a}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2a8}]}, 0x88}, 0x1, 0x0, 0x0, 0x4}, 0x20000000)

19:06:24 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r2, 0x2e5eb3e7e2dcc196, 0x70bd2a, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x7, 0xa, '\xa7#)'}]}, 0x1c}, 0x1, 0x0, 0x0, 0x800}, 0x24040841) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1574.769891] nbd: must specify a size in bytes for the device
[ 1574.793719] nbd: must specify a size in bytes for the device
19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="2b00023707b36f8000000000"], 0x38}}, 0x0)

19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
openat$vhost_vsock(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
openat$vhost_vsock(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0) (async)

19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x70bd29, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x4c800)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

[ 1574.834050] nbd: must specify a size in bytes for the device
[ 1574.862563] nbd: must specify an index to disconnect
19:06:24 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r4, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:24 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f00000005c0)={&(0x7f0000000500)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000580)={&(0x7f0000000540)={0x14, r3, 0x20, 0x70bd26, 0x25dfdbff}, 0x14}, 0x1, 0x0, 0x0, 0x4000}, 0x40080) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0) (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100000}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0xa8, r5, 0x4, 0x70bd2d, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7ad8}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x209}]}, 0xa8}, 0x1, 0x0, 0x0, 0x410}, 0x20004000)
r7 = openat$nvram(0xffffffffffffff9c, &(0x7f0000000300), 0x268102, 0x0) (async)
r8 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000340)='/proc/cpuinfo\x00', 0x0, 0x0) (async)
r9 = openat$zero(0xffffffffffffff9c, &(0x7f0000000380), 0x80, 0x0)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f00000004c0)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000480)={&(0x7f00000003c0)={0x88, r4, 0x8, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8, 0x1, r6}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x20}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1a}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7866dc5a}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2a8}]}, 0x88}, 0x1, 0x0, 0x0, 0x4}, 0x20000000)

19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000080)=ANY=[@ANYBLOB="bceb5187a9e09cb13569f5c338759955336f2228d842a5fce03e12deff3eb0b489ba7e55c692585fb671bc444af27af7ad649e23fd53efd6a36bfee3b60e52945656bf98810eebdecb95bd96ef2df93a073a31df9fda5332934d86acadeaf6f877e731ede8e8198dad35f0", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000900", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="2b00023707b36f8000000000"], 0x38}}, 0x0)

19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

[ 1574.884173] nbd: must specify a size in bytes for the device
[ 1574.906974] nbd: must specify at least one socket
[ 1574.927386] nbd: couldn't find a device at index 3
19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
ioctl$FBIOPAN_DISPLAY(r3, 0x4606, &(0x7f0000000040)={0x800, 0x280, 0x3c0, 0x80, 0xffffffff, 0x2, 0x2, 0x0, {0x2b99, 0x6, 0x1}, {0x2, 0xffffffff, 0x1}, {0xf86, 0x8}, {0x5, 0x5}, 0x3, 0x80, 0x80000001, 0x1, 0x1, 0x7f, 0x1, 0x5, 0x7fff, 0x3, 0xe000000, 0x1, 0x24, 0x4, 0x3})

19:06:24 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r4, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000080)=ANY=[@ANYBLOB="bceb5187a9e09cb13569f5c338759955336f2228d842a5fce03e12deff3eb0b489ba7e55c692585fb671bc444af27af7ad649e23fd53efd6a36bfee3b60e52945656bf98810eebdecb95bd96ef2df93a073a31df9fda5332934d86acadeaf6f877e731ede8e8198dad35f0", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000900", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000080)=ANY=[@ANYBLOB="bceb5187a9e09cb13569f5c338759955336f2228d842a5fce03e12deff3eb0b489ba7e55c692585fb671bc444af27af7ad649e23fd53efd6a36bfee3b60e52945656bf98810eebdecb95bd96ef2df93a073a31df9fda5332934d86acadeaf6f877e731ede8e8198dad35f0", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000900", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)

19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x44, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7}]}, 0x44}}, 0x2000)

19:06:24 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f00000005c0)={&(0x7f0000000500)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000580)={&(0x7f0000000540)={0x14, r3, 0x20, 0x70bd26, 0x25dfdbff}, 0x14}, 0x1, 0x0, 0x0, 0x4000}, 0x40080) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0) (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100000}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0xa8, r5, 0x4, 0x70bd2d, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7ad8}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x209}]}, 0xa8}, 0x1, 0x0, 0x0, 0x410}, 0x20004000)
r7 = openat$nvram(0xffffffffffffff9c, &(0x7f0000000300), 0x268102, 0x0) (async)
r8 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000340)='/proc/cpuinfo\x00', 0x0, 0x0) (async)
r9 = openat$zero(0xffffffffffffff9c, &(0x7f0000000380), 0x80, 0x0) (async)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f00000004c0)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000480)={&(0x7f00000003c0)={0x88, r4, 0x8, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8, 0x1, r6}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x20}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1a}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7866dc5a}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2a8}]}, 0x88}, 0x1, 0x0, 0x0, 0x4}, 0x20000000)

[ 1574.976961] nbd: must specify an index to disconnect
19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
ioctl$FBIOPAN_DISPLAY(r3, 0x4606, &(0x7f0000000040)={0x800, 0x280, 0x3c0, 0x80, 0xffffffff, 0x2, 0x2, 0x0, {0x2b99, 0x6, 0x1}, {0x2, 0xffffffff, 0x1}, {0xf86, 0x8}, {0x5, 0x5}, 0x3, 0x80, 0x80000001, 0x1, 0x1, 0x7f, 0x1, 0x5, 0x7fff, 0x3, 0xe000000, 0x1, 0x24, 0x4, 0x3})

19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000080)=ANY=[@ANYBLOB="bceb5187a9e09cb13569f5c338759955336f2228d842a5fce03e12deff3eb0b489ba7e55c692585fb671bc444af27af7ad649e23fd53efd6a36bfee3b60e52945656bf98810eebdecb95bd96ef2df93a073a31df9fda5332934d86acadeaf6f877e731ede8e8198dad35f0", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000900", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x44, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7}]}, 0x44}}, 0x2000)

19:06:24 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r4, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
r3 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
ioctl$FBIOPAN_DISPLAY(r3, 0x4606, &(0x7f0000000040)={0x800, 0x280, 0x3c0, 0x80, 0xffffffff, 0x2, 0x2, 0x0, {0x2b99, 0x6, 0x1}, {0x2, 0xffffffff, 0x1}, {0xf86, 0x8}, {0x5, 0x5}, 0x3, 0x80, 0x80000001, 0x1, 0x1, 0x7f, 0x1, 0x5, 0x7fff, 0x3, 0xe000000, 0x1, 0x24, 0x4, 0x3})

[ 1575.033312] nbd: must specify at least one socket
[ 1575.043778] nbd: must specify at least one socket
[ 1575.059170] nbd: couldn't find a device at index 3
[ 1575.071991] nbd: must specify an index to disconnect
19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:24 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x18, r2, 0x10, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}, 0x1, 0x0, 0x0, 0x15}, 0x80)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x2, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0x0, 0x6, 0x3}, @NBD_ATTR_SOCKETS={0xfffffffffffffeca, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8000000000}]}, 0x38}, 0x1, 0x0, 0x0, 0x4800}, 0x4008090)

19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x68, 0x0, 0x200, 0x70bd2b, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xfffffffffffffff8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x25}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x68}, 0x1, 0x0, 0x0, 0x4000040}, 0x20040000)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1575.122954] nbd: must specify at least one socket
19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x44, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7}]}, 0x44}}, 0x2000)

19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="55be923c79c814db692cfe1a04f4eb70174bccbaa60a7bfb48c309930ec6710d2a9ae7255bf0326b66c8b1abf508c7ed0691825be3b231bd0c6ce62f59c7", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000001000000000000c0006e4fdd87e21b1fc0000"], 0x4c}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f00000002c0)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f0000000140)={&(0x7f00000001c0)={0x68, r2, 0x100, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x127}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x100000001}]}, 0x68}, 0x1, 0x0, 0x0, 0x4000040}, 0x4000004)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000300), r3)

[ 1575.164877] nbd: must specify at least one socket
[ 1575.178042] nbd: must specify at least one socket
19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x68, 0x0, 0x200, 0x70bd2b, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xfffffffffffffff8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x25}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x68}, 0x1, 0x0, 0x0, 0x4000040}, 0x20040000)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:24 executing program 3:
ioctl$MON_IOCX_MFETCH(0xffffffffffffffff, 0xc0109207, &(0x7f0000000080)={&(0x7f0000000000)=[0x0], 0x1, 0x2})
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_open_dev$sg(&(0x7f0000000040), 0x0, 0x0)
ioctl$SG_IO(r3, 0x2285, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0, @scatter={0x6, 0x0, &(0x7f00000006c0)=[{&(0x7f00000000c0)=""/171, 0xab}, {&(0x7f00000003c0)=""/234, 0xea}, {&(0x7f00000002c0)=""/82, 0x52}, {&(0x7f00000004c0)=""/150, 0x96}, {&(0x7f0000000580)=""/164, 0xa4}, {&(0x7f0000000640)=""/98, 0x62}]}, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000740)=ANY=[@ANYBLOB="00401000c12c0255bc24a3781eafbbca7480a2e48eab9a5159c70f", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="55be923c79c814db692cfe1a04f4eb70174bccbaa60a7bfb48c309930ec6710d2a9ae7255bf0326b66c8b1abf508c7ed0691825be3b231bd0c6ce62f59c7", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000001000000000000c0006e4fdd87e21b1fc0000"], 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f00000002c0)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f0000000140)={&(0x7f00000001c0)={0x68, r2, 0x100, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x127}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x100000001}]}, 0x68}, 0x1, 0x0, 0x0, 0x4000040}, 0x4000004)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000300), r3)

19:06:24 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x18, r2, 0x10, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}, 0x1, 0x0, 0x0, 0x15}, 0x80) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x2, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0x0, 0x6, 0x3}, @NBD_ATTR_SOCKETS={0xfffffffffffffeca, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8000000000}]}, 0x38}, 0x1, 0x0, 0x0, 0x4800}, 0x4008090)

[ 1575.214720] nbd: couldn't find a device at index 3
19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000ea000000010000000c00030000000000000000000c00078000000000", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:24 executing program 3:
ioctl$MON_IOCX_MFETCH(0xffffffffffffffff, 0xc0109207, &(0x7f0000000080)={&(0x7f0000000000)=[0x0], 0x1, 0x2})
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_open_dev$sg(&(0x7f0000000040), 0x0, 0x0)
ioctl$SG_IO(r3, 0x2285, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0, @scatter={0x6, 0x0, &(0x7f00000006c0)=[{&(0x7f00000000c0)=""/171, 0xab}, {&(0x7f00000003c0)=""/234, 0xea}, {&(0x7f00000002c0)=""/82, 0x52}, {&(0x7f00000004c0)=""/150, 0x96}, {&(0x7f0000000580)=""/164, 0xa4}, {&(0x7f0000000640)=""/98, 0x62}]}, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000740)=ANY=[@ANYBLOB="00401000c12c0255bc24a3781eafbbca7480a2e48eab9a5159c70f", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000740)=ANY=[@ANYBLOB="00401000c12c0255bc24a3781eafbbca7480a2e48eab9a5159c70f", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x68, 0x0, 0x200, 0x70bd2b, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xfffffffffffffff8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x25}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x68}, 0x1, 0x0, 0x0, 0x4000040}, 0x20040000)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x68, 0x0, 0x200, 0x70bd2b, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xfffffffffffffff8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x25}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x68}, 0x1, 0x0, 0x0, 0x4000040}, 0x20040000) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

19:06:24 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x18, r2, 0x10, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}, 0x1, 0x0, 0x0, 0x15}, 0x80)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x2, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0x0, 0x6, 0x3}, @NBD_ATTR_SOCKETS={0xfffffffffffffeca, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8000000000}]}, 0x38}, 0x1, 0x0, 0x0, 0x4800}, 0x4008090)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x18, r2, 0x10, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}, 0x1, 0x0, 0x0, 0x15}, 0x80) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x2, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0x0, 0x6, 0x3}, @NBD_ATTR_SOCKETS={0xfffffffffffffeca, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8000000000}]}, 0x38}, 0x1, 0x0, 0x0, 0x4800}, 0x4008090) (async)

[ 1575.286292] nbd: must specify at least one socket
19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="55be923c79c814db692cfe1a04f4eb70174bccbaa60a7bfb48c309930ec6710d2a9ae7255bf0326b66c8b1abf508c7ed0691825be3b231bd0c6ce62f59c7", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000001000000000000c0006e4fdd87e21b1fc0000"], 0x4c}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f00000002c0)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f0000000140)={&(0x7f00000001c0)={0x68, r2, 0x100, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x127}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x100000001}]}, 0x68}, 0x1, 0x0, 0x0, 0x4000040}, 0x4000004)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000300), r3)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="55be923c79c814db692cfe1a04f4eb70174bccbaa60a7bfb48c309930ec6710d2a9ae7255bf0326b66c8b1abf508c7ed0691825be3b231bd0c6ce62f59c7", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000001000000000000c0006e4fdd87e21b1fc0000"], 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f00000002c0)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f0000000140)={&(0x7f00000001c0)={0x68, r2, 0x100, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x127}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x100000001}]}, 0x68}, 0x1, 0x0, 0x0, 0x4000040}, 0x4000004) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000300), r3) (async)

19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000ea000000010000000c00030000000000000000000c00078000000000", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r1, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x880)

19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000ea000000010000000c00030000000000000000000c00078000000000", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000ea000000010000000c00030000000000000000000c00078000000000", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)

19:06:24 executing program 3:
ioctl$MON_IOCX_MFETCH(0xffffffffffffffff, 0xc0109207, &(0x7f0000000080)={&(0x7f0000000000)=[0x0], 0x1, 0x2})
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_open_dev$sg(&(0x7f0000000040), 0x0, 0x0) (async)
r3 = syz_open_dev$sg(&(0x7f0000000040), 0x0, 0x0)
ioctl$SG_IO(r3, 0x2285, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0, @scatter={0x6, 0x0, &(0x7f00000006c0)=[{&(0x7f00000000c0)=""/171, 0xab}, {&(0x7f00000003c0)=""/234, 0xea}, {&(0x7f00000002c0)=""/82, 0x52}, {&(0x7f00000004c0)=""/150, 0x96}, {&(0x7f0000000580)=""/164, 0xa4}, {&(0x7f0000000640)=""/98, 0x62}]}, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000740)=ANY=[@ANYBLOB="00401000c12c0255bc24a3781eafbbca7480a2e48eab9a5159c70f", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="8100000000000000010000000ce1192b0d2d94000300000000000000000014000780", @ANYRES32, @ANYBLOB="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", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:24 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB=' \x00\b\x00', @ANYRES16=r2, @ANYBLOB="00032dbd7000fedbdf25020000000c0003000300000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x801}, 0x8000)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0xd, 0xa, '/dev/vcs\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x3c}}, 0x0)

[ 1575.401556] nbd: must specify at least one socket
[ 1575.419807] nbd: must specify at least one socket
19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:24 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r1, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x880)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r1, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x880) (async)

19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="8100000000000000010000000ce1192b0d2d94000300000000000000000014000780", @ANYRES32, @ANYBLOB="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", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:24 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r1, 0x8933, 0x0)
ioctl$SNDCTL_SEQ_CTRLRATE(r1, 0xc0045103, &(0x7f0000000080)=0x2)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0x0, 0x8, 0xdbf}]}, 0x4c}, 0x1, 0x0, 0x0, 0x20001880}, 0x8000)

[ 1575.485604] nbd: must specify at least one socket
19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000000000000200000004000a00"], 0x18}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x38, r2, 0x8, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000000000000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x38}, 0x1, 0x0, 0x0, 0x20004020}, 0x800)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:24 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB=' \x00\b\x00', @ANYRES16=r2, @ANYBLOB="00032dbd7000fedbdf25020000000c0003000300000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x801}, 0x8000) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0xd, 0xa, '/dev/vcs\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x3c}}, 0x0)

19:06:24 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="8100000000000000010000000ce1192b0d2d94000300000000000000000014000780", @ANYRES32, @ANYBLOB="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", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:24 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:24 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000000000000200000004000a00"], 0x18}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x38, r2, 0x8, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000000000000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x38}, 0x1, 0x0, 0x0, 0x20004020}, 0x800) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:24 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r1, 0x8933, 0x0)
ioctl$SNDCTL_SEQ_CTRLRATE(r1, 0xc0045103, &(0x7f0000000080)=0x2)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0x0, 0x8, 0xdbf}]}, 0x4c}, 0x1, 0x0, 0x0, 0x20001880}, 0x8000)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r1, 0x8933, 0x0) (async)
ioctl$SNDCTL_SEQ_CTRLRATE(r1, 0xc0045103, &(0x7f0000000080)=0x2) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0x0, 0x8, 0xdbf}]}, 0x4c}, 0x1, 0x0, 0x0, 0x20001880}, 0x8000) (async)

[ 1575.540629] nbd: must specify at least one socket
19:06:25 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r1, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x880)

19:06:25 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:25 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRES16, @ANYRES16=r2, @ANYBLOB="010028bd700000000000010000000c00030000000000000000001400078049fc0100e72cb5e04f83ece09fbba34795c49deb82b9cd209a07176450f43b6f1f8883deacb30eceae00465cdae90d3359e12d9853dbdbe6420fe7a6abf8416c9a52bef8d322db777371e3ee1a1b88f8cf500255405ff214d9a96e02ebfeee770a8dc0cb70408a51b1f05d18c06c966089bcf01eaf6e4a267dcaa998545ba091c92cfc94ad3373bafb1e681996bdb6e8caa8ce5cab30e720902a9ba48d2da456bbf4131600db50dde64890fcce5ba2d4e7344a7d134e9453c8d801", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}, 0x1, 0x0, 0x0, 0x20000000}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f00000001c0), r1)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000340)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000200)={&(0x7f00000002c0)=ANY=[@ANYBLOB='h\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="00082dbd7000fddbdf25030000000c00060003000000000000000c81102c0005000000ff00000000000c0004003f000000000000000c00080009000000000000000c0005001e000000000000000c00040300000000000000000c0006000700000000"], 0x68}, 0x1, 0x0, 0x0, 0x801}, 0x40)
ioctl$FBIOPUT_CON2FBMAP(0xffffffffffffffff, 0x4610, &(0x7f0000000380)={0x38, 0x2})
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:25 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB=' \x00\b\x00', @ANYRES16=r2, @ANYBLOB="00032dbd7000fedbdf25020000000c0003000300000000000000"], 0x20}, 0x1, 0x0, 0x0, 0x801}, 0x8000) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0xd, 0xa, '/dev/vcs\x00'}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x3c}}, 0x0)

19:06:25 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000000000000200000004000a00"], 0x18}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x38, r2, 0x8, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000000000000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x38}, 0x1, 0x0, 0x0, 0x20004020}, 0x800)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000000000000200000004000a00"], 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x38, r2, 0x8, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000000000000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x38}, 0x1, 0x0, 0x0, 0x20004020}, 0x800) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)

19:06:25 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

[ 1575.597005] nbd: must specify at least one socket
[ 1575.608301] nbd: must specify at least one socket
19:06:25 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRES16, @ANYRES16=r2, @ANYBLOB="010028bd700000000000010000000c00030000000000000000001400078049fc0100e72cb5e04f83ece09fbba34795c49deb82b9cd209a07176450f43b6f1f8883deacb30eceae00465cdae90d3359e12d9853dbdbe6420fe7a6abf8416c9a52bef8d322db777371e3ee1a1b88f8cf500255405ff214d9a96e02ebfeee770a8dc0cb70408a51b1f05d18c06c966089bcf01eaf6e4a267dcaa998545ba091c92cfc94ad3373bafb1e681996bdb6e8caa8ce5cab30e720902a9ba48d2da456bbf4131600db50dde64890fcce5ba2d4e7344a7d134e9453c8d801", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}, 0x1, 0x0, 0x0, 0x20000000}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f00000001c0), r1)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000340)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000200)={&(0x7f00000002c0)=ANY=[@ANYBLOB='h\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="00082dbd7000fddbdf25030000000c00060003000000000000000c81102c0005000000ff00000000000c0004003f000000000000000c00080009000000000000000c0005001e000000000000000c00040300000000000000000c0006000700000000"], 0x68}, 0x1, 0x0, 0x0, 0x801}, 0x40)
ioctl$FBIOPUT_CON2FBMAP(0xffffffffffffffff, 0x4610, &(0x7f0000000380)={0x38, 0x2})
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRES16, @ANYRES16=r2, @ANYBLOB="010028bd700000000000010000000c00030000000000000000001400078049fc0100e72cb5e04f83ece09fbba34795c49deb82b9cd209a07176450f43b6f1f8883deacb30eceae00465cdae90d3359e12d9853dbdbe6420fe7a6abf8416c9a52bef8d322db777371e3ee1a1b88f8cf500255405ff214d9a96e02ebfeee770a8dc0cb70408a51b1f05d18c06c966089bcf01eaf6e4a267dcaa998545ba091c92cfc94ad3373bafb1e681996bdb6e8caa8ce5cab30e720902a9ba48d2da456bbf4131600db50dde64890fcce5ba2d4e7344a7d134e9453c8d801", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}, 0x1, 0x0, 0x0, 0x20000000}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f00000001c0), r1) (async)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000340)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000200)={&(0x7f00000002c0)=ANY=[@ANYBLOB='h\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="00082dbd7000fddbdf25030000000c00060003000000000000000c81102c0005000000ff00000000000c0004003f000000000000000c00080009000000000000000c0005001e000000000000000c00040300000000000000000c0006000700000000"], 0x68}, 0x1, 0x0, 0x0, 0x801}, 0x40) (async)
ioctl$FBIOPUT_CON2FBMAP(0xffffffffffffffff, 0x4610, &(0x7f0000000380)={0x38, 0x2}) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)

19:06:25 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r1)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000300)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000002c0)={&(0x7f0000000200)={0x38, r4, 0x1, 0x70bd2a, 0x25dfdbfe, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}]}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x38}, 0x1, 0x0, 0x0, 0x1}, 0x20040001)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r2, 0x400, 0x70bd25, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0x80}, 0x10)

19:06:25 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x44, r2, 0x1, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x400}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x101}]}, 0x44}}, 0x0)

19:06:25 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r1, 0x8933, 0x0) (async)
ioctl$SNDCTL_SEQ_CTRLRATE(r1, 0xc0045103, &(0x7f0000000080)=0x2) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0x0, 0x8, 0xdbf}]}, 0x4c}, 0x1, 0x0, 0x0, 0x20001880}, 0x8000)

[ 1575.671132] nbd: must specify at least one socket
19:06:25 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

[ 1575.698487] nla_parse: 246 callbacks suppressed
[ 1575.698493] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
[ 1575.720492] netlink: 56 bytes leftover after parsing attributes in process `syz-executor.3'.
[ 1575.736100] nbd: must specify at least one socket
19:06:25 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f00000000c0)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0)
r3 = shmget(0x0, 0x4000, 0x1000, &(0x7f0000ffb000/0x4000)=nil)
shmctl$SHM_INFO(r3, 0xe, &(0x7f00000002c0)=""/209)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r4)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x202000, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x38, r5, 0x1, 0x0, 0x800000, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100000001}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000100)='/proc/sys/net/ipv4/tcp_rmem\x00', 0x1, 0x0)

19:06:25 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x44, r2, 0x1, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x400}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x101}]}, 0x44}}, 0x0)

19:06:25 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="0100000000f0ffffffff010800000c0003f66db404a01e7ff7696b81e37f3db4200000000000ff0000870800010000000000", @ANYRES32, @ANYRES64=r2, @ANYRESDEC=r2, @ANYBLOB="0c000600000000000000007cf2f33c00feffffff00000000"], 0x4c}}, 0x0)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
epoll_ctl$EPOLL_CTL_ADD(0xffffffffffffffff, 0x1, r3, &(0x7f0000000000)={0x80000006})

19:06:25 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRES16, @ANYRES16=r2, @ANYBLOB="010028bd700000000000010000000c00030000000000000000001400078049fc0100e72cb5e04f83ece09fbba34795c49deb82b9cd209a07176450f43b6f1f8883deacb30eceae00465cdae90d3359e12d9853dbdbe6420fe7a6abf8416c9a52bef8d322db777371e3ee1a1b88f8cf500255405ff214d9a96e02ebfeee770a8dc0cb70408a51b1f05d18c06c966089bcf01eaf6e4a267dcaa998545ba091c92cfc94ad3373bafb1e681996bdb6e8caa8ce5cab30e720902a9ba48d2da456bbf4131600db50dde64890fcce5ba2d4e7344a7d134e9453c8d801", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}, 0x1, 0x0, 0x0, 0x20000000}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f00000001c0), r1)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000340)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000200)={&(0x7f00000002c0)=ANY=[@ANYBLOB='h\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="00082dbd7000fddbdf25030000000c00060003000000000000000c81102c0005000000ff00000000000c0004003f000000000000000c00080009000000000000000c0005001e000000000000000c00040300000000000000000c0006000700000000"], 0x68}, 0x1, 0x0, 0x0, 0x801}, 0x40) (async)
ioctl$FBIOPUT_CON2FBMAP(0xffffffffffffffff, 0x4610, &(0x7f0000000380)={0x38, 0x2}) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

[ 1575.756389] nbd: must specify at least one socket
[ 1575.762781] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
19:06:25 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:25 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async, rerun: 32)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r1)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000300)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000002c0)={&(0x7f0000000200)={0x38, r4, 0x1, 0x70bd2a, 0x25dfdbfe, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}]}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x38}, 0x1, 0x0, 0x0, 0x1}, 0x20040001) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r2, 0x400, 0x70bd25, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0x80}, 0x10)

[ 1575.830951] nbd: must specify an index to disconnect
19:06:25 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:25 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f00000000c0)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0)
r3 = shmget(0x0, 0x4000, 0x1000, &(0x7f0000ffb000/0x4000)=nil)
shmctl$SHM_INFO(r3, 0xe, &(0x7f00000002c0)=""/209)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r4)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x202000, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x38, r5, 0x1, 0x0, 0x800000, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100000001}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000100)='/proc/sys/net/ipv4/tcp_rmem\x00', 0x1, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f00000000c0)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0) (async)
shmget(0x0, 0x4000, 0x1000, &(0x7f0000ffb000/0x4000)=nil) (async)
shmctl$SHM_INFO(r3, 0xe, &(0x7f00000002c0)=""/209) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r4) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x202000, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x38, r5, 0x1, 0x0, 0x800000, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100000001}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000100)='/proc/sys/net/ipv4/tcp_rmem\x00', 0x1, 0x0) (async)

[ 1575.856741] nbd: must specify at least one socket
[ 1575.865873] netlink: 44 bytes leftover after parsing attributes in process `syz-executor.3'.
19:06:25 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x44, r2, 0x1, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x400}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x101}]}, 0x44}}, 0x0)

19:06:25 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

[ 1575.896922] nbd: must specify at least one socket
19:06:25 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="0100000000f0ffffffff010800000c0003f66db404a01e7ff7696b81e37f3db4200000000000ff0000870800010000000000", @ANYRES32, @ANYRES64=r2, @ANYRESDEC=r2, @ANYBLOB="0c000600000000000000007cf2f33c00feffffff00000000"], 0x4c}}, 0x0)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
epoll_ctl$EPOLL_CTL_ADD(0xffffffffffffffff, 0x1, r3, &(0x7f0000000000)={0x80000006})
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="0100000000f0ffffffff010800000c0003f66db404a01e7ff7696b81e37f3db4200000000000ff0000870800010000000000", @ANYRES32, @ANYRES64=r2, @ANYRESDEC=r2, @ANYBLOB="0c000600000000000000007cf2f33c00feffffff00000000"], 0x4c}}, 0x0) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
epoll_ctl$EPOLL_CTL_ADD(0xffffffffffffffff, 0x1, r3, &(0x7f0000000000)={0x80000006}) (async)

19:06:25 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r1) (async)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000300)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000002c0)={&(0x7f0000000200)={0x38, r4, 0x1, 0x70bd2a, 0x25dfdbfe, {}, [@NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}]}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x38}, 0x1, 0x0, 0x0, 0x1}, 0x20040001)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r2, 0x400, 0x70bd25, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0x80}, 0x10)

[ 1575.946677] nbd: must specify an index to disconnect
19:06:25 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
socketpair(0x26, 0x80000, 0x218f, &(0x7f0000000040)={0xffffffffffffffff, <r3=>0xffffffffffffffff})
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, 0x0, 0x200, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8, 0x1, r3}, {0x8}, {0x8}, {0x8, 0x1, r4}, {0x8}, {0x8, 0x1, r5}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x25}]}, 0x74}}, 0x20000000)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1575.973687] nbd: must specify at least one socket
19:06:25 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:25 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f00000000c0)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0) (async)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f00000000c0)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0)
r3 = shmget(0x0, 0x4000, 0x1000, &(0x7f0000ffb000/0x4000)=nil)
shmctl$SHM_INFO(r3, 0xe, &(0x7f00000002c0)=""/209)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r4) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r4)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x202000, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x38, r5, 0x1, 0x0, 0x800000, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100000001}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000100)='/proc/sys/net/ipv4/tcp_rmem\x00', 0x1, 0x0)

19:06:25 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x38, r2, 0x20, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x38}, 0x1, 0x0, 0x0, 0x400c8c4}, 0x1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f00000002c0), 0xffffffffffffffff)
recvmsg$can_bcm(0xffffffffffffffff, &(0x7f0000000600)={&(0x7f00000003c0)=@l2tp={0x2, 0x0, @dev}, 0x80, &(0x7f0000000500)=[{&(0x7f0000000440)=""/108, 0x6c}, {&(0x7f00000004c0)=""/59, 0x3b}], 0x2, &(0x7f0000000540)=""/168, 0xa8}, 0x40000000)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000340)={&(0x7f0000000300)={0x38, r5, 0x1, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3b}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7ff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16}]}, 0x38}, 0x1, 0x0, 0x0, 0x40}, 0x20000000)

[ 1576.016835] netlink: 44 bytes leftover after parsing attributes in process `syz-executor.3'.
[ 1576.041459] nbd: must specify at least one socket
[ 1576.058365] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
19:06:25 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x38, r2, 0x15, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xdb}]}, 0x38}}, 0x0)

19:06:25 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="0100000000f0ffffffff010800000c0003f66db404a01e7ff7696b81e37f3db4200000000000ff0000870800010000000000", @ANYRES32, @ANYRES64=r2, @ANYRESDEC=r2, @ANYBLOB="0c000600000000000000007cf2f33c00feffffff00000000"], 0x4c}}, 0x0)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
epoll_ctl$EPOLL_CTL_ADD(0xffffffffffffffff, 0x1, r3, &(0x7f0000000000)={0x80000006})
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="0100000000f0ffffffff010800000c0003f66db404a01e7ff7696b81e37f3db4200000000000ff0000870800010000000000", @ANYRES32, @ANYRES64=r2, @ANYRESDEC=r2, @ANYBLOB="0c000600000000000000007cf2f33c00feffffff00000000"], 0x4c}}, 0x0) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
epoll_ctl$EPOLL_CTL_ADD(0xffffffffffffffff, 0x1, r3, &(0x7f0000000000)={0x80000006}) (async)

19:06:25 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0) (async)
socketpair(0x26, 0x80000, 0x218f, &(0x7f0000000040)={0xffffffffffffffff, <r3=>0xffffffffffffffff}) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async, rerun: 64)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (rerun: 64)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, 0x0, 0x200, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8, 0x1, r3}, {0x8}, {0x8}, {0x8, 0x1, r4}, {0x8}, {0x8, 0x1, r5}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x25}]}, 0x74}}, 0x20000000)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:25 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

[ 1576.075950] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
[ 1576.102913] netlink: 44 bytes leftover after parsing attributes in process `syz-executor.3'.
[ 1576.123372] nbd: must specify at least one socket
19:06:25 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
socketpair(0x26, 0x80000, 0x218f, &(0x7f0000000040)={0xffffffffffffffff, <r3=>0xffffffffffffffff})
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, 0x0, 0x200, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8, 0x1, r3}, {0x8}, {0x8}, {0x8, 0x1, r4}, {0x8}, {0x8, 0x1, r5}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x25}]}, 0x74}}, 0x20000000)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0) (async)
socketpair(0x26, 0x80000, 0x218f, &(0x7f0000000040)) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, 0x0, 0x200, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8, 0x1, r3}, {0x8}, {0x8}, {0x8, 0x1, r4}, {0x8}, {0x8, 0x1, r5}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x25}]}, 0x74}}, 0x20000000) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

[ 1576.147203] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'.
[ 1576.162398] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'.
[ 1576.171374] nbd: must specify at least one socket
[ 1576.178586] nbd: must specify an index to disconnect
19:06:25 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x38, r2, 0x20, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x38}, 0x1, 0x0, 0x0, 0x400c8c4}, 0x1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f00000002c0), 0xffffffffffffffff)
recvmsg$can_bcm(0xffffffffffffffff, &(0x7f0000000600)={&(0x7f00000003c0)=@l2tp={0x2, 0x0, @dev}, 0x80, &(0x7f0000000500)=[{&(0x7f0000000440)=""/108, 0x6c}, {&(0x7f00000004c0)=""/59, 0x3b}], 0x2, &(0x7f0000000540)=""/168, 0xa8}, 0x40000000) (async)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000340)={&(0x7f0000000300)={0x38, r5, 0x1, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3b}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7ff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16}]}, 0x38}, 0x1, 0x0, 0x0, 0x40}, 0x20000000)

19:06:25 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\a\x00\x00\x00', @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:25 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f00000000c0)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0)
r3 = shmget(0x0, 0x4000, 0x1000, &(0x7f0000ffb000/0x4000)=nil)
shmctl$SHM_INFO(r3, 0xe, &(0x7f00000002c0)=""/209)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r4)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x202000, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x38, r5, 0x1, 0x0, 0x800000, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100000001}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000100)='/proc/sys/net/ipv4/tcp_rmem\x00', 0x1, 0x0)

[ 1576.194751] nbd: must specify a size in bytes for the device
19:06:25 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)

19:06:25 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x38, r2, 0x15, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xdb}]}, 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x38, r2, 0x15, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xdb}]}, 0x38}}, 0x0) (async)

19:06:25 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="81000000000000000000cdacb9347d", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:25 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\a\x00\x00\x00', @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1576.250925] nbd: socks must be embedded in a SOCK_ITEM attr
[ 1576.288288] nbd: must specify an index to disconnect
19:06:25 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0) (async)

19:06:25 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x38, r2, 0x20, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x38}, 0x1, 0x0, 0x0, 0x400c8c4}, 0x1) (async, rerun: 32)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async, rerun: 32)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f00000002c0), 0xffffffffffffffff) (rerun: 32)
recvmsg$can_bcm(0xffffffffffffffff, &(0x7f0000000600)={&(0x7f00000003c0)=@l2tp={0x2, 0x0, @dev}, 0x80, &(0x7f0000000500)=[{&(0x7f0000000440)=""/108, 0x6c}, {&(0x7f00000004c0)=""/59, 0x3b}], 0x2, &(0x7f0000000540)=""/168, 0xa8}, 0x40000000) (async)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000340)={&(0x7f0000000300)={0x38, r5, 0x1, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3b}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7ff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x16}]}, 0x38}, 0x1, 0x0, 0x0, 0x40}, 0x20000000)

19:06:25 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRES16, @ANYRES16=r2, @ANYBLOB="010028bd700000000000010000000c00030000000000000000001400078049fc0100e72cb5e04f83ece09fbba34795c49deb82b9cd209a07176450f43b6f1f8883deacb30eceae00465cdae90d3359e12d9853dbdbe6420fe7a6abf8416c9a52bef8d322db777371e3ee1a1b88f8cf500255405ff214d9a96e02ebfeee770a8dc0cb70408a51b1f05d18c06c966089bcf01eaf6e4a267dcaa998545ba091c92cfc94ad3373bafb1e681996bdb6e8caa8ce5cab30e720902a9ba48d2da456bbf4131600db50dde64890fcce5ba2d4e7344a7d134e9453c8d801", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}, 0x1, 0x0, 0x0, 0x20000000}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f00000001c0), r1)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000340)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000200)={&(0x7f00000002c0)=ANY=[@ANYBLOB='h\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="00082dbd7000fddbdf25030000000c00060003000000000000000c81102c0005000000ff00000000000c0004003f000000000000000c00080009000000000000000c0005001e000000000000000c00040300000000000000000c0006000700000000"], 0x68}, 0x1, 0x0, 0x0, 0x801}, 0x40)
ioctl$FBIOPUT_CON2FBMAP(0xffffffffffffffff, 0x4610, &(0x7f0000000380)={0x38, 0x2})
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:25 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="81000000000000000000cdacb9347d", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="81000000000000000000cdacb9347d", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)

19:06:25 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\a\x00\x00\x00', @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:25 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x38, r2, 0x15, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xdb}]}, 0x38}}, 0x0)

[ 1576.317089] nbd: must specify a size in bytes for the device
[ 1576.344214] nbd: must specify a size in bytes for the device
[ 1576.359201] nbd: socks must be embedded in a SOCK_ITEM attr
19:06:25 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)

19:06:25 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="55be923c79c814db692cfe1a04f4eb70174bccbaa60a7bfb48c309930ec6710d2a9ae7255bf0326b66c8b1abf508c7ed0691825be3b231bd0c6ce62f59c7", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000001000000000000c0006e4fdd87e21b1fc0000"], 0x4c}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f00000002c0)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f0000000140)={&(0x7f00000001c0)={0x68, r2, 0x100, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x127}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x100000001}]}, 0x68}, 0x1, 0x0, 0x0, 0x4000040}, 0x4000004)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000300), r3)

19:06:25 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="81000000000000000000cdacb9347d", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:25 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000001c0)={<r4=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000480)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x40004}, 0xc, &(0x7f0000000200)={&(0x7f0000000400)={0x54, r3, 0x20, 0x70bd2c, 0x25dfdbff, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r4}, {0x8}]}]}, 0x54}}, 0x20000041)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000140)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x2c, r3, 0x100, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x80}, 0x20008040)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000300)=ANY=[@ANYBLOB="4bffffe0ae9385dac8a738075a22dc5c456d33aa3f73ac64a2abd1e644b2a5654f48cdf78da7ba981b2f22cd0f435e772152459cdb6ac16dbabfee7085fbfea4d32958c61dbc7ea8986b1de7c44c05cd286f1044223222aee73a7c7354dd40e61a5b823a62305974e6492dae5926085a85b2c3c60567bb4fdc6d97ebfd1b94ebde127fe6d0df27f2dda6b32f0de5c7e05113f983fdbe2dd490", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1576.439467] nbd: socks must be embedded in a SOCK_ITEM attr
19:06:25 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000e2ff0000010000000c00030004000000097aafe661000780882bebab", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:25 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:25 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x68, 0x0, 0x200, 0x70bd2b, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xfffffffffffffff8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x25}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x68}, 0x1, 0x0, 0x0, 0x4000040}, 0x20040000)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:25 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = shmget(0x2, 0x4000, 0x800, &(0x7f0000ffa000/0x4000)=nil)
shmctl$IPC_RMID(r3, 0x0)
shmctl$SHM_STAT(r3, 0xd, &(0x7f0000000000)=""/150)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000000c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000300000000e6ffffff001400078008000100", @ANYRES32, @ANYBLOB="080014000000000000000039c001261b687e7c8ea68e0a72bc8a", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
r4 = shmget(0x2, 0x4000, 0x800, &(0x7f0000ffa000/0x4000)=nil)
shmctl$IPC_RMID(r4, 0x0)
shmat(r4, &(0x7f0000ff8000/0x4000)=nil, 0x2800)

19:06:25 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$userio(0xffffffffffffff9c, &(0x7f0000000000), 0x40000, 0x0)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:25 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x68, 0x0, 0x200, 0x70bd2b, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xfffffffffffffff8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x25}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x68}, 0x1, 0x0, 0x0, 0x4000040}, 0x20040000)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:25 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000001c0)={<r4=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000480)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x40004}, 0xc, &(0x7f0000000200)={&(0x7f0000000400)={0x54, r3, 0x20, 0x70bd2c, 0x25dfdbff, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r4}, {0x8}]}]}, 0x54}}, 0x20000041)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000140)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x2c, r3, 0x100, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x80}, 0x20008040)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000300)=ANY=[@ANYBLOB="4bffffe0ae9385dac8a738075a22dc5c456d33aa3f73ac64a2abd1e644b2a5654f48cdf78da7ba981b2f22cd0f435e772152459cdb6ac16dbabfee7085fbfea4d32958c61dbc7ea8986b1de7c44c05cd286f1044223222aee73a7c7354dd40e61a5b823a62305974e6492dae5926085a85b2c3c60567bb4fdc6d97ebfd1b94ebde127fe6d0df27f2dda6b32f0de5c7e05113f983fdbe2dd490", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000001c0)) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000480)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x40004}, 0xc, &(0x7f0000000200)={&(0x7f0000000400)={0x54, r3, 0x20, 0x70bd2c, 0x25dfdbff, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r4}, {0x8}]}]}, 0x54}}, 0x20000041) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000140)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x2c, r3, 0x100, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x80}, 0x20008040) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000300)=ANY=[@ANYBLOB="4bffffe0ae9385dac8a738075a22dc5c456d33aa3f73ac64a2abd1e644b2a5654f48cdf78da7ba981b2f22cd0f435e772152459cdb6ac16dbabfee7085fbfea4d32958c61dbc7ea8986b1de7c44c05cd286f1044223222aee73a7c7354dd40e61a5b823a62305974e6492dae5926085a85b2c3c60567bb4fdc6d97ebfd1b94ebde127fe6d0df27f2dda6b32f0de5c7e05113f983fdbe2dd490", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)

[ 1576.558856] nbd: must specify at least one socket
19:06:26 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000e2ff0000010000000c00030004000000097aafe661000780882bebab", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000e2ff0000010000000c00030004000000097aafe661000780882bebab", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)

19:06:26 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:26 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$userio(0xffffffffffffff9c, &(0x7f0000000000), 0x40000, 0x0)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:26 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = shmget(0x2, 0x4000, 0x800, &(0x7f0000ffa000/0x4000)=nil)
shmctl$IPC_RMID(r3, 0x0) (async)
shmctl$SHM_STAT(r3, 0xd, &(0x7f0000000000)=""/150) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000000c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000300000000e6ffffff001400078008000100", @ANYRES32, @ANYBLOB="080014000000000000000039c001261b687e7c8ea68e0a72bc8a", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)
r4 = shmget(0x2, 0x4000, 0x800, &(0x7f0000ffa000/0x4000)=nil)
shmctl$IPC_RMID(r4, 0x0)
shmat(r4, &(0x7f0000ff8000/0x4000)=nil, 0x2800)

[ 1576.586046] nbd: must specify a size in bytes for the device
19:06:26 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = shmget(0x2, 0x4000, 0x800, &(0x7f0000ffa000/0x4000)=nil)
shmctl$IPC_RMID(r3, 0x0)
shmctl$SHM_STAT(r3, 0xd, &(0x7f0000000000)=""/150)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000000c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000300000000e6ffffff001400078008000100", @ANYRES32, @ANYBLOB="080014000000000000000039c001261b687e7c8ea68e0a72bc8a", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
r4 = shmget(0x2, 0x4000, 0x800, &(0x7f0000ffa000/0x4000)=nil)
shmctl$IPC_RMID(r4, 0x0)
shmat(r4, &(0x7f0000ff8000/0x4000)=nil, 0x2800)

19:06:26 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:26 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000001c0)={<r4=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000480)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x40004}, 0xc, &(0x7f0000000200)={&(0x7f0000000400)={0x54, r3, 0x20, 0x70bd2c, 0x25dfdbff, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r4}, {0x8}]}]}, 0x54}}, 0x20000041) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000140)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x2c, r3, 0x100, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x80}, 0x20008040)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000300)=ANY=[@ANYBLOB="4bffffe0ae9385dac8a738075a22dc5c456d33aa3f73ac64a2abd1e644b2a5654f48cdf78da7ba981b2f22cd0f435e772152459cdb6ac16dbabfee7085fbfea4d32958c61dbc7ea8986b1de7c44c05cd286f1044223222aee73a7c7354dd40e61a5b823a62305974e6492dae5926085a85b2c3c60567bb4fdc6d97ebfd1b94ebde127fe6d0df27f2dda6b32f0de5c7e05113f983fdbe2dd490", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1576.646088] nbd: must specify at least one socket
19:06:26 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$userio(0xffffffffffffff9c, &(0x7f0000000000), 0x40000, 0x0) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:26 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = shmget(0x2, 0x4000, 0x800, &(0x7f0000ffa000/0x4000)=nil)
shmctl$IPC_RMID(r3, 0x0) (async)
shmctl$SHM_STAT(r3, 0xd, &(0x7f0000000000)=""/150)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000000c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000300000000e6ffffff001400078008000100", @ANYRES32, @ANYBLOB="080014000000000000000039c001261b687e7c8ea68e0a72bc8a", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
r4 = shmget(0x2, 0x4000, 0x800, &(0x7f0000ffa000/0x4000)=nil)
shmctl$IPC_RMID(r4, 0x0) (async, rerun: 64)
shmat(r4, &(0x7f0000ff8000/0x4000)=nil, 0x2800) (rerun: 64)

19:06:26 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$userio(0xffffffffffffff9c, &(0x7f0000000000), 0x40000, 0x0)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1576.684829] nbd: must specify a size in bytes for the device
[ 1576.704218] nbd: must specify at least one socket
19:06:26 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000e2ff0000010000000c00030004000000097aafe661000780882bebab", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:26 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="f1ff2102", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:26 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:26 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:26 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000680), 0x228200, 0x0)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r8 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000500)='/proc/key-users\x00', 0x0, 0x0)
r9 = openat$full(0xffffffffffffff9c, &(0x7f0000000540), 0x12000, 0x0)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000640)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x20}, 0xc, &(0x7f0000000600)={&(0x7f0000000580)={0x54, r7, 0x100, 0x70bd29, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8}, {0x8}]}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4000010}, 0x4)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000100)={&(0x7f0000000040)={0x88, r5, 0x300, 0x70bd2d, 0x25dfdbfe, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xf40c}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x67}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x10d191e8}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x88}, 0x1, 0x0, 0x0, 0x8040}, 0x81)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r10 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r11 = syz_genetlink_get_family_id$nbd(&(0x7f0000000300), r3)
sendmsg$NBD_CMD_RECONFIGURE(r10, &(0x7f0000000480)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x20}, 0xc, &(0x7f0000000380)={&(0x7f0000000340)={0x40, r11, 0x500, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x102}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x40}, 0x1, 0x0, 0x0, 0x4004014}, 0x4004)

19:06:26 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="f1ff2102", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:26 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:26 executing program 0:
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0)
ioctl$MON_IOCX_GET(r0, 0x40189206, &(0x7f0000000140)={&(0x7f0000000000), &(0x7f0000000040)=""/207, 0xcf})
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1576.803425] nbd: must specify a size in bytes for the device
19:06:26 executing program 4:
sendto$rose(0xffffffffffffffff, &(0x7f0000000000)="f2a2186fa682844078388a2526c7dc0fda2cbc17215c4874fe5375ec36308de4d954c9ab257ae982cd9a6ad3fe07c3e797223f948cff26e2eb0c3ef247e20d598c1fa0e4fc3bf37a75ef8f1010b1572004c0f46a4f2a6c198bff12b24cb5758897887c6d0a263eab37d6991475f19464e3084b837d9792af9c5e17a9fa83ca22e1ca6cdf9accab71f2f73a346ac480961571449a607a0f4078191a6e8cca3fd34ce5f16a89d53f137b92e4705dd56f914e8e6ffa3d7714101e4fde4f8df202837575fbdb5cf7bff0592373efa98d63e6ce08b501c6c31bfdfdc143ffbd10dad480119190", 0xe4, 0x1, &(0x7f0000000100)=@short={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, 0x1, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}}, 0x1c)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
pipe2$watch_queue(&(0x7f0000000140)={0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x80)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000480), r0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000580)={&(0x7f0000000440)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000540)={&(0x7f00000004c0)={0x44, r2, 0xb13, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x44}, 0x1, 0x0, 0x0, 0x40845}, 0x4008811)
ioctl$UFFDIO_COPY(r1, 0xc028aa03, &(0x7f00000005c0)={&(0x7f0000fff000/0x1000)=nil, &(0x7f0000ff8000/0x8000)=nil, 0x1000, 0x3})
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000400)={&(0x7f0000000600)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)={0x34, 0x0, 0x4, 0x70bd28, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x34}, 0x1, 0x0, 0x0, 0x4000010}, 0x40)
sendto$rose(r1, &(0x7f00000002c0)="baf315fa3dac0dbda5a4c0af72a0256c7ee1d0daebcbe432086636cacf7a75b47bcf3e71015f24f011a31d99532d6d87f72e1d59f2eace0b8f78fda31e85083e45fd3cae7245101ae9cf1a4807af4b9c98b3bc5a695f34608a18c69e054503899b582c0ec1b0ad5a37", 0x69, 0x8000, &(0x7f0000000200)=@full={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, 0x2, [@bcast, @bcast, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, @bcast, @default]}, 0x40)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:26 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
ioctl$FBIOPAN_DISPLAY(r3, 0x4606, &(0x7f0000000040)={0x800, 0x280, 0x3c0, 0x80, 0xffffffff, 0x2, 0x2, 0x0, {0x2b99, 0x6, 0x1}, {0x2, 0xffffffff, 0x1}, {0xf86, 0x8}, {0x5, 0x5}, 0x3, 0x80, 0x80000001, 0x1, 0x1, 0x7f, 0x1, 0x5, 0x7fff, 0x3, 0xe000000, 0x1, 0x24, 0x4, 0x3})

19:06:26 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1576.884247] nbd: must specify an index to disconnect
19:06:26 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="f1ff2102", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:26 executing program 4:
sendto$rose(0xffffffffffffffff, &(0x7f0000000000)="f2a2186fa682844078388a2526c7dc0fda2cbc17215c4874fe5375ec36308de4d954c9ab257ae982cd9a6ad3fe07c3e797223f948cff26e2eb0c3ef247e20d598c1fa0e4fc3bf37a75ef8f1010b1572004c0f46a4f2a6c198bff12b24cb5758897887c6d0a263eab37d6991475f19464e3084b837d9792af9c5e17a9fa83ca22e1ca6cdf9accab71f2f73a346ac480961571449a607a0f4078191a6e8cca3fd34ce5f16a89d53f137b92e4705dd56f914e8e6ffa3d7714101e4fde4f8df202837575fbdb5cf7bff0592373efa98d63e6ce08b501c6c31bfdfdc143ffbd10dad480119190", 0xe4, 0x1, &(0x7f0000000100)=@short={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, 0x1, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}}, 0x1c)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
pipe2$watch_queue(&(0x7f0000000140), 0x80) (async)
pipe2$watch_queue(&(0x7f0000000140)={0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x80)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000480), r0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000580)={&(0x7f0000000440)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000540)={&(0x7f00000004c0)={0x44, r2, 0xb13, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x44}, 0x1, 0x0, 0x0, 0x40845}, 0x4008811) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000580)={&(0x7f0000000440)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000540)={&(0x7f00000004c0)={0x44, r2, 0xb13, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x44}, 0x1, 0x0, 0x0, 0x40845}, 0x4008811)
ioctl$UFFDIO_COPY(r1, 0xc028aa03, &(0x7f00000005c0)={&(0x7f0000fff000/0x1000)=nil, &(0x7f0000ff8000/0x8000)=nil, 0x1000, 0x3})
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000400)={&(0x7f0000000600)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)={0x34, 0x0, 0x4, 0x70bd28, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x34}, 0x1, 0x0, 0x0, 0x4000010}, 0x40) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000400)={&(0x7f0000000600)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)={0x34, 0x0, 0x4, 0x70bd28, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x34}, 0x1, 0x0, 0x0, 0x4000010}, 0x40)
sendto$rose(r1, &(0x7f00000002c0)="baf315fa3dac0dbda5a4c0af72a0256c7ee1d0daebcbe432086636cacf7a75b47bcf3e71015f24f011a31d99532d6d87f72e1d59f2eace0b8f78fda31e85083e45fd3cae7245101ae9cf1a4807af4b9c98b3bc5a695f34608a18c69e054503899b582c0ec1b0ad5a37", 0x69, 0x8000, &(0x7f0000000200)=@full={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, 0x2, [@bcast, @bcast, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, @bcast, @default]}, 0x40)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:26 executing program 0:
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0)
ioctl$MON_IOCX_GET(r0, 0x40189206, &(0x7f0000000140)={&(0x7f0000000000), &(0x7f0000000040)=""/207, 0xcf})
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1576.937891] nbd: must specify an index to disconnect
19:06:26 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000680), 0x228200, 0x0)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r8 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000500)='/proc/key-users\x00', 0x0, 0x0) (async)
r9 = openat$full(0xffffffffffffff9c, &(0x7f0000000540), 0x12000, 0x0)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000640)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x20}, 0xc, &(0x7f0000000600)={&(0x7f0000000580)={0x54, r7, 0x100, 0x70bd29, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8}, {0x8}]}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4000010}, 0x4) (async)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000100)={&(0x7f0000000040)={0x88, r5, 0x300, 0x70bd2d, 0x25dfdbfe, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xf40c}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x67}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x10d191e8}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x88}, 0x1, 0x0, 0x0, 0x8040}, 0x81) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r10 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r11 = syz_genetlink_get_family_id$nbd(&(0x7f0000000300), r3)
sendmsg$NBD_CMD_RECONFIGURE(r10, &(0x7f0000000480)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x20}, 0xc, &(0x7f0000000380)={&(0x7f0000000340)={0x40, r11, 0x500, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x102}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x40}, 0x1, 0x0, 0x0, 0x4004014}, 0x4004)

19:06:26 executing program 2:
sendto$rose(0xffffffffffffffff, &(0x7f0000000000)="f2a2186fa682844078388a2526c7dc0fda2cbc17215c4874fe5375ec36308de4d954c9ab257ae982cd9a6ad3fe07c3e797223f948cff26e2eb0c3ef247e20d598c1fa0e4fc3bf37a75ef8f1010b1572004c0f46a4f2a6c198bff12b24cb5758897887c6d0a263eab37d6991475f19464e3084b837d9792af9c5e17a9fa83ca22e1ca6cdf9accab71f2f73a346ac480961571449a607a0f4078191a6e8cca3fd34ce5f16a89d53f137b92e4705dd56f914e8e6ffa3d7714101e4fde4f8df202837575fbdb5cf7bff0592373efa98d63e6ce08b501c6c31bfdfdc143ffbd10dad480119190", 0xe4, 0x1, &(0x7f0000000100)=@short={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, 0x1, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}}, 0x1c)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
pipe2$watch_queue(&(0x7f0000000140)={0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x80)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000480), r0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000580)={&(0x7f0000000440)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000540)={&(0x7f00000004c0)={0x44, r2, 0xb13, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x44}, 0x1, 0x0, 0x0, 0x40845}, 0x4008811)
ioctl$UFFDIO_COPY(r1, 0xc028aa03, &(0x7f00000005c0)={&(0x7f0000fff000/0x1000)=nil, &(0x7f0000ff8000/0x8000)=nil, 0x1000, 0x3})
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000400)={&(0x7f0000000600)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)={0x34, 0x0, 0x4, 0x70bd28, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x34}, 0x1, 0x0, 0x0, 0x4000010}, 0x40)
sendto$rose(r1, &(0x7f00000002c0)="baf315fa3dac0dbda5a4c0af72a0256c7ee1d0daebcbe432086636cacf7a75b47bcf3e71015f24f011a31d99532d6d87f72e1d59f2eace0b8f78fda31e85083e45fd3cae7245101ae9cf1a4807af4b9c98b3bc5a695f34608a18c69e054503899b582c0ec1b0ad5a37", 0x69, 0x8000, &(0x7f0000000200)=@full={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, 0x2, [@bcast, @bcast, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, @bcast, @default]}, 0x40)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:26 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000b5b4691a2f549da064ad48925db50867b65e38f65798d6d75ea78335eb37ccdd5a6b92d0560cc30611d0fcb9f4395c85874af5a87254380f3b81616834b0cbb4de60e0db04da41792b3a8fc4f70afd69e65cb9d0b9278a11257ace617d12745ab656913de1fe4a"], 0x38}}, 0x0)
pipe2$watch_queue(&(0x7f0000000000)={0xffffffffffffffff, <r3=>0xffffffffffffffff}, 0x80)
ioctl$SCSI_IOCTL_DOORUNLOCK(r3, 0x5381)

19:06:26 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r4)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB='0\x00\x00\x00', @ANYRES16=r6, @ANYBLOB="020026bd70002d87df250500000088000a006e62640008009a9c9d6a81e3600e0a006e6264000c000800"], 0x30}}, 0x20004)

19:06:26 executing program 0:
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0)
ioctl$MON_IOCX_GET(r0, 0x40189206, &(0x7f0000000140)={&(0x7f0000000000), &(0x7f0000000040)=""/207, 0xcf})
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0) (async)
ioctl$MON_IOCX_GET(r0, 0x40189206, &(0x7f0000000140)={&(0x7f0000000000), &(0x7f0000000040)=""/207, 0xcf}) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

19:06:26 executing program 4:
sendto$rose(0xffffffffffffffff, &(0x7f0000000000)="f2a2186fa682844078388a2526c7dc0fda2cbc17215c4874fe5375ec36308de4d954c9ab257ae982cd9a6ad3fe07c3e797223f948cff26e2eb0c3ef247e20d598c1fa0e4fc3bf37a75ef8f1010b1572004c0f46a4f2a6c198bff12b24cb5758897887c6d0a263eab37d6991475f19464e3084b837d9792af9c5e17a9fa83ca22e1ca6cdf9accab71f2f73a346ac480961571449a607a0f4078191a6e8cca3fd34ce5f16a89d53f137b92e4705dd56f914e8e6ffa3d7714101e4fde4f8df202837575fbdb5cf7bff0592373efa98d63e6ce08b501c6c31bfdfdc143ffbd10dad480119190", 0xe4, 0x1, &(0x7f0000000100)=@short={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, 0x1, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}}, 0x1c)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
pipe2$watch_queue(&(0x7f0000000140)={0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x80)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000480), r0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000580)={&(0x7f0000000440)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000540)={&(0x7f00000004c0)={0x44, r2, 0xb13, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x44}, 0x1, 0x0, 0x0, 0x40845}, 0x4008811)
ioctl$UFFDIO_COPY(r1, 0xc028aa03, &(0x7f00000005c0)={&(0x7f0000fff000/0x1000)=nil, &(0x7f0000ff8000/0x8000)=nil, 0x1000, 0x3})
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000400)={&(0x7f0000000600)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)={0x34, 0x0, 0x4, 0x70bd28, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x34}, 0x1, 0x0, 0x0, 0x4000010}, 0x40)
sendto$rose(r1, &(0x7f00000002c0)="baf315fa3dac0dbda5a4c0af72a0256c7ee1d0daebcbe432086636cacf7a75b47bcf3e71015f24f011a31d99532d6d87f72e1d59f2eace0b8f78fda31e85083e45fd3cae7245101ae9cf1a4807af4b9c98b3bc5a695f34608a18c69e054503899b582c0ec1b0ad5a37", 0x69, 0x8000, &(0x7f0000000200)=@full={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, 0x2, [@bcast, @bcast, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, @bcast, @default]}, 0x40) (async)
sendto$rose(r1, &(0x7f00000002c0)="baf315fa3dac0dbda5a4c0af72a0256c7ee1d0daebcbe432086636cacf7a75b47bcf3e71015f24f011a31d99532d6d87f72e1d59f2eace0b8f78fda31e85083e45fd3cae7245101ae9cf1a4807af4b9c98b3bc5a695f34608a18c69e054503899b582c0ec1b0ad5a37", 0x69, 0x8000, &(0x7f0000000200)=@full={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, 0x2, [@bcast, @bcast, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, @bcast, @default]}, 0x40)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:26 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r4, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1577.034878] nbd: must specify an index to disconnect
[ 1577.049813] nbd: must specify an index to disconnect
19:06:26 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000680), 0x228200, 0x0) (async)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r8 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000500)='/proc/key-users\x00', 0x0, 0x0) (async)
r9 = openat$full(0xffffffffffffff9c, &(0x7f0000000540), 0x12000, 0x0)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000640)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x20}, 0xc, &(0x7f0000000600)={&(0x7f0000000580)={0x54, r7, 0x100, 0x70bd29, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8}, {0x8}]}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x1}]}, 0x54}, 0x1, 0x0, 0x0, 0x4000010}, 0x4) (async)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000100)={&(0x7f0000000040)={0x88, r5, 0x300, 0x70bd2d, 0x25dfdbfe, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xf40c}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x67}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x10d191e8}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x88}, 0x1, 0x0, 0x0, 0x8040}, 0x81)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
r10 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r11 = syz_genetlink_get_family_id$nbd(&(0x7f0000000300), r3)
sendmsg$NBD_CMD_RECONFIGURE(r10, &(0x7f0000000480)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x20}, 0xc, &(0x7f0000000380)={&(0x7f0000000340)={0x40, r11, 0x500, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x102}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x40}, 0x1, 0x0, 0x0, 0x4004014}, 0x4004)

19:06:26 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000b5b4691a2f549da064ad48925db50867b65e38f65798d6d75ea78335eb37ccdd5a6b92d0560cc30611d0fcb9f4395c85874af5a87254380f3b81616834b0cbb4de60e0db04da41792b3a8fc4f70afd69e65cb9d0b9278a11257ace617d12745ab656913de1fe4a"], 0x38}}, 0x0) (async)
pipe2$watch_queue(&(0x7f0000000000)={0xffffffffffffffff, <r3=>0xffffffffffffffff}, 0x80)
ioctl$SCSI_IOCTL_DOORUNLOCK(r3, 0x5381)

19:06:26 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:26 executing program 4:
ioctl$SG_BLKTRACETEARDOWN(0xffffffffffffffff, 0x1276, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x7c, r2, 0x100, 0x70bd2c, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x80}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffffffffffff}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x5}]}, 0x7c}, 0x1, 0x0, 0x0, 0x1}, 0xc0)
openat$nvram(0xffffffffffffff9c, &(0x7f0000000100), 0x4081, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1577.076317] nbd: must specify at least one socket
[ 1577.089331] nbd: couldn't find a device at index 2
[ 1577.111804] nbd: must specify an index to disconnect
19:06:26 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r4, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:26 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000b5b4691a2f549da064ad48925db50867b65e38f65798d6d75ea78335eb37ccdd5a6b92d0560cc30611d0fcb9f4395c85874af5a87254380f3b81616834b0cbb4de60e0db04da41792b3a8fc4f70afd69e65cb9d0b9278a11257ace617d12745ab656913de1fe4a"], 0x38}}, 0x0) (async, rerun: 64)
pipe2$watch_queue(&(0x7f0000000000)={0xffffffffffffffff, <r3=>0xffffffffffffffff}, 0x80) (rerun: 64)
ioctl$SCSI_IOCTL_DOORUNLOCK(r3, 0x5381)

[ 1577.136107] nbd: must specify an index to disconnect
[ 1577.144175] nbd: must specify an index to disconnect
19:06:26 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r4)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB='0\x00\x00\x00', @ANYRES16=r6, @ANYBLOB="020026bd70002d87df250500000088000a006e62640008009a9c9d6a81e3600e0a006e6264000c000800"], 0x30}}, 0x20004)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r4) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5) (async)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB='0\x00\x00\x00', @ANYRES16=r6, @ANYBLOB="020026bd70002d87df250500000088000a006e62640008009a9c9d6a81e3600e0a006e6264000c000800"], 0x30}}, 0x20004) (async)

19:06:26 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r8=>0xffffffffffffffff}}, './file0\x00'})
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r9=>0xffffffffffffffff})
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18, <r11=>0xffffffffffffffff}, './file0\x00'})
r12 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r12, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000380)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000140)={&(0x7f0000000280)={0xd4, r2, 0x20, 0x70bd26, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}, {0x8, 0x1, r5}, {0x8, 0x1, r6}]}, @NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8}, {0x8}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0xd4}, 0x1, 0x0, 0x0, 0x801}, 0xc1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:26 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:26 executing program 4:
ioctl$SG_BLKTRACETEARDOWN(0xffffffffffffffff, 0x1276, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x7c, r2, 0x100, 0x70bd2c, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x80}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffffffffffff}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x5}]}, 0x7c}, 0x1, 0x0, 0x0, 0x1}, 0xc0) (async)
openat$nvram(0xffffffffffffff9c, &(0x7f0000000100), 0x4081, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1577.182028] nbd: must specify at least one socket
[ 1577.198911] nbd: must specify an index to disconnect
[ 1577.217556] nbd: couldn't find a device at index 2
19:06:26 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r4, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1577.254635] nbd: must specify an index to disconnect
19:06:26 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r8=>0xffffffffffffffff}}, './file0\x00'}) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r9=>0xffffffffffffffff})
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18, <r11=>0xffffffffffffffff}, './file0\x00'})
r12 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r12, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000380)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000140)={&(0x7f0000000280)={0xd4, r2, 0x20, 0x70bd26, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}, {0x8, 0x1, r5}, {0x8, 0x1, r6}]}, @NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8}, {0x8}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0xd4}, 0x1, 0x0, 0x0, 0x801}, 0xc1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:26 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r4) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async, rerun: 32)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB='0\x00\x00\x00', @ANYRES16=r6, @ANYBLOB="020026bd70002d87df250500000088000a006e62640008009a9c9d6a81e3600e0a006e6264000c000800"], 0x30}}, 0x20004) (rerun: 32)

19:06:26 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:26 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000080), 0x101080, 0x0)
r4 = openat$full(0xffffffffffffff9c, &(0x7f00000000c0), 0x583202, 0x0)
r5 = openat$zero(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
write$P9_RMKNOD(r5, &(0x7f0000000040)={0x14, 0x13, 0x1, {0x8, 0x0, 0x5}}, 0x14)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={<r6=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8, 0x1, r6}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x5c}}, 0x0)

19:06:26 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, 0x0, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1577.377823] nbd: couldn't find a device at index 2
19:06:26 executing program 4:
ioctl$SG_BLKTRACETEARDOWN(0xffffffffffffffff, 0x1276, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x7c, r2, 0x100, 0x70bd2c, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x80}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffffffffffff}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x5}]}, 0x7c}, 0x1, 0x0, 0x0, 0x1}, 0xc0)
openat$nvram(0xffffffffffffff9c, &(0x7f0000000100), 0x4081, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
ioctl$SG_BLKTRACETEARDOWN(0xffffffffffffffff, 0x1276, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x7c, r2, 0x100, 0x70bd2c, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x80}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffffffffffff}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x5}]}, 0x7c}, 0x1, 0x0, 0x0, 0x1}, 0xc0) (async)
openat$nvram(0xffffffffffffff9c, &(0x7f0000000100), 0x4081, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)

19:06:26 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x20}}, 0x0)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030098859a99300d00000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:26 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r8=>0xffffffffffffffff}}, './file0\x00'})
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r9=>0xffffffffffffffff})
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18}, './file0\x00'}) (async)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18, <r11=>0xffffffffffffffff}, './file0\x00'})
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
r12 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r12, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000380)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000140)={&(0x7f0000000280)={0xd4, r2, 0x20, 0x70bd26, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}, {0x8, 0x1, r5}, {0x8, 0x1, r6}]}, @NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8}, {0x8}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0xd4}, 0x1, 0x0, 0x0, 0x801}, 0xc1) (async)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000380)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000140)={&(0x7f0000000280)={0xd4, r2, 0x20, 0x70bd26, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}, {0x8, 0x1, r5}, {0x8, 0x1, r6}]}, @NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8}, {0x8}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0xd4}, 0x1, 0x0, 0x0, 0x801}, 0xc1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:26 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000080), 0x101080, 0x0)
r4 = openat$full(0xffffffffffffff9c, &(0x7f00000000c0), 0x583202, 0x0)
r5 = openat$zero(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
write$P9_RMKNOD(r5, &(0x7f0000000040)={0x14, 0x13, 0x1, {0x8, 0x0, 0x5}}, 0x14)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={<r6=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8, 0x1, r6}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x5c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
openat$pfkey(0xffffffffffffff9c, &(0x7f0000000080), 0x101080, 0x0) (async)
openat$full(0xffffffffffffff9c, &(0x7f00000000c0), 0x583202, 0x0) (async)
openat$zero(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) (async)
write$P9_RMKNOD(r5, &(0x7f0000000040)={0x14, 0x13, 0x1, {0x8, 0x0, 0x5}}, 0x14) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8, 0x1, r6}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x5c}}, 0x0) (async)

19:06:26 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, 0x0, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1577.457305] nbd: must specify an index to disconnect
[ 1577.471629] nbd: must specify at least one socket
19:06:26 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1577.503868] nbd: must specify an index to disconnect
[ 1577.509118] nbd: must specify an index to disconnect
[ 1577.537948] nbd: must specify at least one socket
[ 1577.548546] nbd: must specify an index to disconnect
19:06:26 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x20}}, 0x0)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030098859a99300d00000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x20}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030098859a99300d00000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)

19:06:27 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, 0x0, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1577.561995] nbd: must specify an index to disconnect
[ 1577.574524] nbd: must specify at least one socket
[ 1577.653495] nbd: must specify an index to disconnect
[ 1577.668830] nbd: must specify an index to disconnect
[ 1577.682995] nbd: must specify an index to disconnect
[ 1577.688247] nbd: must specify an index to disconnect
[ 1577.694654] nbd: must specify an index to disconnect
[ 1577.700448] nbd: must specify an index to disconnect
[ 1577.708472] nbd: must specify an index to disconnect
[ 1577.714771] nbd: must specify an index to disconnect
[ 1577.719987] nbd: must specify an index to disconnect
[ 1577.726362] nbd: must specify an index to disconnect
[ 1577.732368] nbd: must specify an index to disconnect
[ 1577.737586] nbd: must specify an index to disconnect
[ 1577.743686] nbd: must specify an index to disconnect
[ 1577.748904] nbd: must specify an index to disconnect
[ 1577.755232] nbd: must specify an index to disconnect
[ 1577.765436] nbd: must specify an index to disconnect
[ 1577.770671] nbd: must specify an index to disconnect
[ 1577.776724] nbd: must specify an index to disconnect
[ 1577.782834] nbd: must specify an index to disconnect
[ 1577.788043] nbd: must specify an index to disconnect
[ 1577.794541] nbd: must specify an index to disconnect
[ 1577.804024] nbd: must specify an index to disconnect
[ 1577.809251] nbd: must specify an index to disconnect
[ 1577.815470] nbd: must specify an index to disconnect
[ 1577.820680] nbd: must specify an index to disconnect
[ 1577.830436] nbd: must specify an index to disconnect
[ 1577.836176] nbd: must specify an index to disconnect
[ 1577.841394] nbd: must specify an index to disconnect
19:06:27 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
shmctl$IPC_STAT(0x0, 0x2, &(0x7f0000000000)=""/196)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
prctl$PR_MCE_KILL_GET(0x22)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:27 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x44, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x44}}, 0x4000000)

19:06:27 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000080), 0x101080, 0x0) (async)
r4 = openat$full(0xffffffffffffff9c, &(0x7f00000000c0), 0x583202, 0x0) (async)
r5 = openat$zero(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
write$P9_RMKNOD(r5, &(0x7f0000000040)={0x14, 0x13, 0x1, {0x8, 0x0, 0x5}}, 0x14) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={<r6=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8, 0x1, r6}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x5c}}, 0x0)

19:06:27 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x20}}, 0x0) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030098859a99300d00000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:27 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:27 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r4, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1577.853551] nbd: must specify an index to disconnect
19:06:27 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
shmctl$IPC_STAT(0x0, 0x2, &(0x7f0000000000)=""/196)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
prctl$PR_MCE_KILL_GET(0x22)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
shmctl$IPC_STAT(0x0, 0x2, &(0x7f0000000000)=""/196) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
prctl$PR_MCE_KILL_GET(0x22) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

19:06:27 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x44, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x44}}, 0x4000000)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x44, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x44}}, 0x4000000) (async)

[ 1577.893806] nbd: must specify at least one socket
19:06:27 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:27 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x38}}, 0x0)

19:06:27 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r3, 0x100, 0x70bd2c, 0x25dfdbfe, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x20}}, 0x801)

19:06:27 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r3, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1577.935236] nbd: must specify at least one socket
[ 1577.946025] nbd: must specify at least one socket
[ 1577.958114] nbd: couldn't find a device at index 2
[ 1577.976394] nbd: must specify at least one socket
19:06:27 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
shmctl$IPC_STAT(0x0, 0x2, &(0x7f0000000000)=""/196) (async, rerun: 32)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
prctl$PR_MCE_KILL_GET(0x22) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1578.007241] nbd: must specify at least one socket
19:06:27 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x44, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x44}}, 0x4000000)

19:06:27 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x38}}, 0x0)

19:06:27 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000086e63dc0000000c00078008a40e00", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x48, r2, 0x8, 0x70bd2c, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3ff}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x48}, 0x1, 0x0, 0x0, 0x40010}, 0x4044810)

19:06:27 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r3, 0x100, 0x70bd2c, 0x25dfdbfe, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x20}}, 0x801)

19:06:27 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r3, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1578.040319] nbd: must specify at least one socket
19:06:27 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000380)={&(0x7f0000000140), 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x4c, 0x0, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '/'}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x21}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6cda}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4004}, 0x20000000)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r2)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x1, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x44810}, 0x800)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r5, 0x1}, 0x14}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:27 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000086e63dc0000000c00078008a40e00", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x48, r2, 0x8, 0x70bd2c, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3ff}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x48}, 0x1, 0x0, 0x0, 0x40010}, 0x4044810)

19:06:27 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffff}]}, 0x38}}, 0x0)

[ 1578.103432] nbd: must specify at least one socket
19:06:27 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r3, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:27 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r3, 0x100, 0x70bd2c, 0x25dfdbfe, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x20}}, 0x801)

19:06:27 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000086e63dc0000000c00078008a40e00", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async, rerun: 32)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x48, r2, 0x8, 0x70bd2c, 0x25dfdbfb, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3ff}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x48}, 0x1, 0x0, 0x0, 0x40010}, 0x4044810)

[ 1578.165153] nbd: must specify at least one socket
19:06:27 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000380)={&(0x7f0000000140), 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x4c, 0x0, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '/'}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x21}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6cda}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4004}, 0x20000000)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r2)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x1, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x44810}, 0x800)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r5, 0x1}, 0x14}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000380)={&(0x7f0000000140), 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x4c, 0x0, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '/'}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x21}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6cda}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4004}, 0x20000000) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r2) (async)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x1, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x44810}, 0x800) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r5, 0x1}, 0x14}}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)

19:06:27 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r0)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14, r2}, 0x14}}, 0x41)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000400), r3)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r5, &(0x7f0000000500)={&(0x7f00000003c0)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000004c0)={&(0x7f0000000440)={0x7c, r6, 0x8, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x800}, @NBD_ATTR_BACKEND_IDENTIFIER={0xa, 0xa, '^]\xa1+!^'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x7c}, 0x1, 0x0, 0x0, 0x40}, 0x8000)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000200)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000100)={0x5c, r4, 0x800, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xcef}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x22}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4040811}, 0xc000)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000380)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000340)={&(0x7f0000000300)={0x20, r4, 0x128, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100000000}]}, 0x20}, 0x1, 0x0, 0x0, 0x20000000}, 0x800)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
r10 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r10, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r11 = syz_genetlink_get_family_id$nbd(&(0x7f0000000640), r1)
sendmsg$NBD_CMD_RECONFIGURE(r10, &(0x7f0000000700)={&(0x7f0000000540), 0xc, &(0x7f00000006c0)={&(0x7f0000000680)={0x20, r11, 0x4, 0x70bd2d, 0x42, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}]}, 0x20}, 0x1, 0x0, 0x0, 0x20000081}, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0)
r12 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x33, &(0x7f0000000240)={&(0x7f0000000040)={0x38, r12, 0x1, 0x0, 0xffffffff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0x0, 0x3, 0x1000}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r9}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xf}]}, 0x38}}, 0x20004095)

19:06:27 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000500), r0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000600)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f00000005c0)={&(0x7f0000000640)=ANY=[@ANYBLOB='d\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="000428bd7000fddbdf25050000000c00050008010000000000000c00020040000000000000002c00078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="20720fd1b0e808000100", @ANYRES32, @ANYBLOB="0c0002000400000000000000"], 0x64}, 0x1, 0x0, 0x0, 0x40040000}, 0x80c0)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r7 = openat$full(0xffffffffffffff9c, &(0x7f0000000040), 0x200002, 0x0)
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f00000002c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0xb0, r6, 0x100, 0x70bd26, 0x25dfdbfe, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6c}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8, 0x1, r7}, {0x8}, {0x8, 0x1, r8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}]}, 0xb0}, 0x1, 0x0, 0x0, 0x20000850}, 0x20000000)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000480)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000380)={&(0x7f0000000340)={0x30, r6, 0x200, 0x8001, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '\xbb'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r9}, {0x8, 0x1, r10}]}]}, 0x30}, 0x1, 0x0, 0x0, 0x815}, 0x10)

19:06:27 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1578.199150] nbd: must specify at least one socket
19:06:27 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:27 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r0)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14, r2}, 0x14}}, 0x41)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000400), r3) (async)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0) (async)
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r5, &(0x7f0000000500)={&(0x7f00000003c0)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000004c0)={&(0x7f0000000440)={0x7c, r6, 0x8, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x800}, @NBD_ATTR_BACKEND_IDENTIFIER={0xa, 0xa, '^]\xa1+!^'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x7c}, 0x1, 0x0, 0x0, 0x40}, 0x8000)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000200)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000100)={0x5c, r4, 0x800, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xcef}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x22}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4040811}, 0xc000) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000380)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000340)={&(0x7f0000000300)={0x20, r4, 0x128, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100000000}]}, 0x20}, 0x1, 0x0, 0x0, 0x20000000}, 0x800) (async)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
r10 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r10, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
r11 = syz_genetlink_get_family_id$nbd(&(0x7f0000000640), r1)
sendmsg$NBD_CMD_RECONFIGURE(r10, &(0x7f0000000700)={&(0x7f0000000540), 0xc, &(0x7f00000006c0)={&(0x7f0000000680)={0x20, r11, 0x4, 0x70bd2d, 0x42, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}]}, 0x20}, 0x1, 0x0, 0x0, 0x20000081}, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0)
r12 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x33, &(0x7f0000000240)={&(0x7f0000000040)={0x38, r12, 0x1, 0x0, 0xffffffff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0x0, 0x3, 0x1000}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r9}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xf}]}, 0x38}}, 0x20004095)

19:06:27 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:27 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1578.269450] nbd: couldn't find a device at index 2
[ 1578.289180] nbd: must specify at least one socket
[ 1578.300187] nbd: must specify an index to disconnect
19:06:27 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYRES32=r2, @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c249129a8000000000000000c00078008000100", @ANYRES16=r1, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:27 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000500), r0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000600)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f00000005c0)={&(0x7f0000000640)=ANY=[@ANYBLOB='d\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="000428bd7000fddbdf25050000000c00050008010000000000000c00020040000000000000002c00078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="20720fd1b0e808000100", @ANYRES32, @ANYBLOB="0c0002000400000000000000"], 0x64}, 0x1, 0x0, 0x0, 0x40040000}, 0x80c0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
openat$full(0xffffffffffffff9c, &(0x7f0000000040), 0x200002, 0x0) (async)
r7 = openat$full(0xffffffffffffff9c, &(0x7f0000000040), 0x200002, 0x0)
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f00000002c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0xb0, r6, 0x100, 0x70bd26, 0x25dfdbfe, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6c}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8, 0x1, r7}, {0x8}, {0x8, 0x1, r8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}]}, 0xb0}, 0x1, 0x0, 0x0, 0x20000850}, 0x20000000)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000480)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000380)={&(0x7f0000000340)={0x30, r6, 0x200, 0x8001, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '\xbb'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r9}, {0x8, 0x1, r10}]}]}, 0x30}, 0x1, 0x0, 0x0, 0x815}, 0x10)

19:06:27 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r0) (async)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14, r2}, 0x14}}, 0x41) (async)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000400), r3) (async)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0) (async)
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r5, &(0x7f0000000500)={&(0x7f00000003c0)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000004c0)={&(0x7f0000000440)={0x7c, r6, 0x8, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x800}, @NBD_ATTR_BACKEND_IDENTIFIER={0xa, 0xa, '^]\xa1+!^'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x7c}, 0x1, 0x0, 0x0, 0x40}, 0x8000) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000200)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000100)={0x5c, r4, 0x800, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xcef}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x22}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4040811}, 0xc000) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000380)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000340)={&(0x7f0000000300)={0x20, r4, 0x128, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100000000}]}, 0x20}, 0x1, 0x0, 0x0, 0x20000000}, 0x800)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
r10 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r10, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r11 = syz_genetlink_get_family_id$nbd(&(0x7f0000000640), r1)
sendmsg$NBD_CMD_RECONFIGURE(r10, &(0x7f0000000700)={&(0x7f0000000540), 0xc, &(0x7f00000006c0)={&(0x7f0000000680)={0x20, r11, 0x4, 0x70bd2d, 0x42, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}]}, 0x20}, 0x1, 0x0, 0x0, 0x20000081}, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0) (async)
r12 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x33, &(0x7f0000000240)={&(0x7f0000000040)={0x38, r12, 0x1, 0x0, 0xffffffff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0x0, 0x3, 0x1000}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r9}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xf}]}, 0x38}}, 0x20004095)

19:06:27 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000380)={&(0x7f0000000140), 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x4c, 0x0, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '/'}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x21}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6cda}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4004}, 0x20000000) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000380)={&(0x7f0000000140), 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x4c, 0x0, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '/'}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x21}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6cda}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4004}, 0x20000000)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r2)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x1, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x44810}, 0x800)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r5, 0x1}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r5, 0x1}, 0x14}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

[ 1578.358981] nbd: couldn't find a device at index 2
19:06:27 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r1, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:27 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r2 = openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0) (async, rerun: 32)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (rerun: 32)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYRES32=r2, @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c249129a8000000000000000c00078008000100", @ANYRES16=r1, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:27 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:27 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x70bd2c, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:27 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r1, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:27 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r3, 0x4, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0x880}, 0x4000080)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r1)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000380)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x6c, r5, 0x2, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x100000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xbd}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4008080}, 0x1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1578.422327] nbd: must specify at least one socket
[ 1578.435394] nbd: must specify at least one socket
19:06:27 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000500), r0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000600)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f00000005c0)={&(0x7f0000000640)=ANY=[@ANYBLOB='d\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="000428bd7000fddbdf25050000000c00050008010000000000000c00020040000000000000002c00078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="20720fd1b0e808000100", @ANYRES32, @ANYBLOB="0c0002000400000000000000"], 0x64}, 0x1, 0x0, 0x0, 0x40040000}, 0x80c0) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
r7 = openat$full(0xffffffffffffff9c, &(0x7f0000000040), 0x200002, 0x0) (async)
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f00000002c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0xb0, r6, 0x100, 0x70bd26, 0x25dfdbfe, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6c}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8, 0x1, r7}, {0x8}, {0x8, 0x1, r8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}]}, 0xb0}, 0x1, 0x0, 0x0, 0x20000850}, 0x20000000)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0) (async)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000480)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000380)={&(0x7f0000000340)={0x30, r6, 0x200, 0x8001, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '\xbb'}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r9}, {0x8, 0x1, r10}]}]}, 0x30}, 0x1, 0x0, 0x0, 0x815}, 0x10)

19:06:27 executing program 0:
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0)
ioctl$MON_IOCX_GET(r0, 0x40189206, &(0x7f0000000100)={&(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @iso}, &(0x7f00000002c0)=""/190, 0xbe})
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1578.478857] nbd: must specify an index to disconnect
19:06:27 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r1, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:27 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x70bd2c, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1578.523238] nbd: must specify an index to disconnect
19:06:28 executing program 0:
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0)
ioctl$MON_IOCX_GET(r0, 0x40189206, &(0x7f0000000100)={&(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @iso}, &(0x7f00000002c0)=""/190, 0xbe})
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0) (async)
ioctl$MON_IOCX_GET(r0, 0x40189206, &(0x7f0000000100)={&(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @iso}, &(0x7f00000002c0)=""/190, 0xbe}) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3) (async)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

19:06:28 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r3, 0x4, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0x880}, 0x4000080)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r1)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000380)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x6c, r5, 0x2, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x100000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xbd}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4008080}, 0x1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r3, 0x4, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0x880}, 0x4000080) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r1) (async)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000380)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x6c, r5, 0x2, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x100000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xbd}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4008080}, 0x1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x70bd2c, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x70bd2c, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)

19:06:28 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYRES32=r2, @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c249129a8000000000000000c00078008000100", @ANYRES16=r1, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sys/net/ipv4/tcp_wmem\x00', 0x1, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYRES32=r2, @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c249129a8000000000000000c00078008000100", @ANYRES16=r1, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)

19:06:28 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:28 executing program 3:
r0 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000140), 0x400000, 0x0)
ioctl$MON_IOCQ_RING_SIZE(r0, 0x9205)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x14, r4, 0x400, 0x70bd28, 0x25dfdbfd}, 0x14}}, 0x20008011)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000002c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100813dbee24b8bd71006b599b106bb477dd0d4f200747ff3fc6ac52e390a0c9ce2f6bbc0907d5ff2b3d9d4d6b147b99a2b0ad74392e592853c37d9e01a610801bd544094853d692cd2b27201be1aaf593198c8704060231e69e7c3acfd04005a5fd1db70e3741e07c6dca9858329e37e1d9082f1c0da2c4b98eacd9466e6766a7c8ad40a709dfa006875882719d41f830d36761771d601f2f1f806a3977b9e2a61d03497d2b33c7ec6f0185b8583fda4633d25bf2adf194b0d0c5a", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1578.608753] nbd: must specify an index to disconnect
19:06:28 executing program 0:
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0)
ioctl$MON_IOCX_GET(r0, 0x40189206, &(0x7f0000000100)={&(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @iso}, &(0x7f00000002c0)=""/190, 0xbe})
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1578.639423] nbd: must specify an index to disconnect
19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="38000000398465d797f8871241797cb141598d53ee497b095a3f888f70710000", @ANYRES16=r2, @ANYBLOB="01000000000000040000000ceef47f083400000000", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

[ 1578.677349] nbd: couldn't find a device at index 2
[ 1578.685122] nbd: must specify an index to disconnect
[ 1578.691383] nbd: must specify a size in bytes for the device
19:06:28 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:28 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x60, 0x0, 0x400, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x9}]}, 0x60}, 0x1, 0x0, 0x0, 0x20000000}, 0x4008011)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x2c, r3, 0x100, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4302b10}]}, 0x2c}, 0x1, 0x0, 0x0, 0x84}, 0x4)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="38000000398465d797f8871241797cb141598d53ee497b095a3f888f70710000", @ANYRES16=r2, @ANYBLOB="01000000000000040000000ceef47f083400000000", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="38000000398465d797f8871241797cb141598d53ee497b095a3f888f70710000", @ANYRES16=r2, @ANYBLOB="01000000000000040000000ceef47f083400000000", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:28 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r3, 0x4, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0x880}, 0x4000080) (async, rerun: 32)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async, rerun: 32)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r1)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000380)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x6c, r5, 0x2, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x100000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xbd}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4008080}, 0x1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:28 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:28 executing program 3:
r0 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000140), 0x400000, 0x0)
ioctl$MON_IOCQ_RING_SIZE(r0, 0x9205)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x14, r4, 0x400, 0x70bd28, 0x25dfdbfd}, 0x14}}, 0x20008011)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000002c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100813dbee24b8bd71006b599b106bb477dd0d4f200747ff3fc6ac52e390a0c9ce2f6bbc0907d5ff2b3d9d4d6b147b99a2b0ad74392e592853c37d9e01a610801bd544094853d692cd2b27201be1aaf593198c8704060231e69e7c3acfd04005a5fd1db70e3741e07c6dca9858329e37e1d9082f1c0da2c4b98eacd9466e6766a7c8ad40a709dfa006875882719d41f830d36761771d601f2f1f806a3977b9e2a61d03497d2b33c7ec6f0185b8583fda4633d25bf2adf194b0d0c5a", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000140), 0x400000, 0x0) (async)
ioctl$MON_IOCQ_RING_SIZE(r0, 0x9205) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x14, r4, 0x400, 0x70bd28, 0x25dfdbfd}, 0x14}}, 0x20008011) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000002c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100813dbee24b8bd71006b599b106bb477dd0d4f200747ff3fc6ac52e390a0c9ce2f6bbc0907d5ff2b3d9d4d6b147b99a2b0ad74392e592853c37d9e01a610801bd544094853d692cd2b27201be1aaf593198c8704060231e69e7c3acfd04005a5fd1db70e3741e07c6dca9858329e37e1d9082f1c0da2c4b98eacd9466e6766a7c8ad40a709dfa006875882719d41f830d36761771d601f2f1f806a3977b9e2a61d03497d2b33c7ec6f0185b8583fda4633d25bf2adf194b0d0c5a", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)

19:06:28 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:28 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (rerun: 64)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x60, 0x0, 0x400, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x9}]}, 0x60}, 0x1, 0x0, 0x0, 0x20000000}, 0x4008011) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x2c, r3, 0x100, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4302b10}]}, 0x2c}, 0x1, 0x0, 0x0, 0x84}, 0x4) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="38000000398465d797f8871241797cb141598d53ee497b095a3f888f70710000", @ANYRES16=r2, @ANYBLOB="01000000000000040000000ceef47f083400000000", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="38000000398465d797f8871241797cb141598d53ee497b095a3f888f70710000", @ANYRES16=r2, @ANYBLOB="01000000000000040000000ceef47f083400000000", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)

19:06:28 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1578.816020] nbd: must specify an index to disconnect
19:06:28 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0xfffffffe, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

19:06:28 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$SNDCTL_SEQ_TESTMIDI(0xffffffffffffffff, 0x40045108, &(0x7f0000000000)=0x5)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='\\\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000000000001b0000001c00078005000000", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="1400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00020001000000010000000c0002000000000000000000"], 0x5c}}, 0x0)

19:06:28 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1578.840043] nbd: must specify a size in bytes for the device
19:06:28 executing program 3:
r0 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000140), 0x400000, 0x0)
ioctl$MON_IOCQ_RING_SIZE(r0, 0x9205) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x14, r4, 0x400, 0x70bd28, 0x25dfdbfd}, 0x14}}, 0x20008011)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000002c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100813dbee24b8bd71006b599b106bb477dd0d4f200747ff3fc6ac52e390a0c9ce2f6bbc0907d5ff2b3d9d4d6b147b99a2b0ad74392e592853c37d9e01a610801bd544094853d692cd2b27201be1aaf593198c8704060231e69e7c3acfd04005a5fd1db70e3741e07c6dca9858329e37e1d9082f1c0da2c4b98eacd9466e6766a7c8ad40a709dfa006875882719d41f830d36761771d601f2f1f806a3977b9e2a61d03497d2b33c7ec6f0185b8583fda4633d25bf2adf194b0d0c5a", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000200)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x40000000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000100)={0x54, r4, 0x300, 0x70bd29, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xfffffffffffffffb}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x270c}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x54}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="380000000eed927fe183a4241a9feebd1f281c20defe60f0358f65dfa87a0c04d88bd1f4830ba6b61117b88a68be7f32370c319822c79298bb8958add0eb1e135fc841310b09066f55f1df6d1ce5508de4eb04757afadfc7df4f0444b2ddaff1a895839391ed43f15d606d3ad7a38d70d9761c9bfa8676a1ede2a460f4108cce", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:28 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$SNDCTL_SEQ_TESTMIDI(0xffffffffffffffff, 0x40045108, &(0x7f0000000000)=0x5)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='\\\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000000000001b0000001c00078005000000", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="1400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00020001000000010000000c0002000000000000000000"], 0x5c}}, 0x0)

19:06:28 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r1, 0x8933, 0x0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000140)={<r2=>0xffffffffffffffff})
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={<r4=>0xffffffffffffffff})
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000300)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000002c0)={&(0x7f00000001c0)={0x74, 0x0, 0x100, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r2}]}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8, 0x1, r4}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x22}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x74}, 0x1, 0x0, 0x0, 0x40000000}, 0x20000000)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)=ANY=[@ANYBLOB="b1007f00", @ANYRES16=0x0, @ANYBLOB="0000000000000000000002000000"], 0x14}}, 0x0)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r5)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='\x00', @ANYRES16=r6, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
r7 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r7, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r7)

19:06:28 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r1, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:28 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x60, 0x0, 0x400, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x9}]}, 0x60}, 0x1, 0x0, 0x0, 0x20000000}, 0x4008011) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000200)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x60, 0x0, 0x400, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r2}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x9}]}, 0x60}, 0x1, 0x0, 0x0, 0x20000000}, 0x4008011)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x2c, r3, 0x100, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4302b10}]}, 0x2c}, 0x1, 0x0, 0x0, 0x84}, 0x4)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1578.956621] nbd: must specify an index to disconnect
19:06:28 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$SNDCTL_SEQ_TESTMIDI(0xffffffffffffffff, 0x40045108, &(0x7f0000000000)=0x5) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='\\\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000000000001b0000001c00078005000000", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="1400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00020001000000010000000c0002000000000000000000"], 0x5c}}, 0x0)

19:06:28 executing program 3:
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0)
ioctl$SNDCTL_SEQ_RESET(r0, 0x5100)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:28 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r1, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000200)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x40000000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000100)={0x54, r4, 0x300, 0x70bd29, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xfffffffffffffffb}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x270c}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x54}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="380000000eed927fe183a4241a9feebd1f281c20defe60f0358f65dfa87a0c04d88bd1f4830ba6b61117b88a68be7f32370c319822c79298bb8958add0eb1e135fc841310b09066f55f1df6d1ce5508de4eb04757afadfc7df4f0444b2ddaff1a895839391ed43f15d606d3ad7a38d70d9761c9bfa8676a1ede2a460f4108cce", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000200)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x40000000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000100)={0x54, r4, 0x300, 0x70bd29, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xfffffffffffffffb}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x270c}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x54}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="380000000eed927fe183a4241a9feebd1f281c20defe60f0358f65dfa87a0c04d88bd1f4830ba6b61117b88a68be7f32370c319822c79298bb8958add0eb1e135fc841310b09066f55f1df6d1ce5508de4eb04757afadfc7df4f0444b2ddaff1a895839391ed43f15d606d3ad7a38d70d9761c9bfa8676a1ede2a460f4108cce", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)

19:06:28 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000080), 0x40802, 0x0)
r8 = openat$pfkey(0xffffffffffffff9c, &(0x7f00000000c0), 0x1, 0x0)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0)
r10 = epoll_create1(0x0)
epoll_ctl$EPOLL_CTL_ADD(r9, 0x1, r10, &(0x7f0000000380)={0x20000000})
r11 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r12 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r11)
sendmsg$NBD_CMD_DISCONNECT(r11, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r12, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r13 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000400), 0x200000, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f00000004c0)={&(0x7f00000003c0)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f0000000480)={&(0x7f0000000440)={0x34, r12, 0x400, 0x70bd2c, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r13}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x84}, 0x8001)
r14 = syz_init_net_socket$rose(0xb, 0x5, 0x0)
ioctl$sock_rose_SIOCADDRT(r14, 0x890b, &(0x7f0000000000)={@remote={0xcc, 0xcc, 0xcc, 0xcc, 0x3}, 0x0, @default, @rose={'rose', 0x0}, 0x0, [@rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @default, @default, @default, @null, @null, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @null]})
r15 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000100), 0x20000, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x98, r4, 0x200, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x44, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}, {0x8, 0x1, r6}, {0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8}, {0x8, 0x1, r9}, {0x8, 0x1, r15}]}, @NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '$'}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x80000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, ','}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x9}]}, 0x98}, 0x1, 0x0, 0x0, 0x44040}, 0x20000000)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x30, r2, 0x1, 0x0, 0x1, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_SIZE_BYTES={0x1}]}, 0x30}, 0x1, 0x0, 0x0, 0x800}, 0x4000001)

[ 1578.988138] nbd: must specify a size in bytes for the device
19:06:28 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r1, 0x8933, 0x0) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000140)={<r2=>0xffffffffffffffff}) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={<r4=>0xffffffffffffffff})
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000300)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000002c0)={&(0x7f00000001c0)={0x74, 0x0, 0x100, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r2}]}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8, 0x1, r4}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x22}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x74}, 0x1, 0x0, 0x0, 0x40000000}, 0x20000000) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)=ANY=[@ANYBLOB="b1007f00", @ANYRES16=0x0, @ANYBLOB="0000000000000000000002000000"], 0x14}}, 0x0)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r5)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='\x00', @ANYRES16=r6, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)
r7 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r7, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r7)

19:06:28 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\x00\x00\x00\x00', @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:28 executing program 3:
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0) (async)
ioctl$SNDCTL_SEQ_RESET(r0, 0x5100)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:28 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r1, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1579.077689] nbd: must specify an index to disconnect
19:06:28 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\x00\x00\x00\x00', @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:28 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0) (async)
r7 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000080), 0x40802, 0x0)
r8 = openat$pfkey(0xffffffffffffff9c, &(0x7f00000000c0), 0x1, 0x0) (async)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0)
r10 = epoll_create1(0x0)
epoll_ctl$EPOLL_CTL_ADD(r9, 0x1, r10, &(0x7f0000000380)={0x20000000}) (async)
r11 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r12 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r11)
sendmsg$NBD_CMD_DISCONNECT(r11, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r12, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
r13 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000400), 0x200000, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f00000004c0)={&(0x7f00000003c0)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f0000000480)={&(0x7f0000000440)={0x34, r12, 0x400, 0x70bd2c, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r13}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x84}, 0x8001)
r14 = syz_init_net_socket$rose(0xb, 0x5, 0x0)
ioctl$sock_rose_SIOCADDRT(r14, 0x890b, &(0x7f0000000000)={@remote={0xcc, 0xcc, 0xcc, 0xcc, 0x3}, 0x0, @default, @rose={'rose', 0x0}, 0x0, [@rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @default, @default, @default, @null, @null, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @null]}) (async)
r15 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000100), 0x20000, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x98, r4, 0x200, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x44, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}, {0x8, 0x1, r6}, {0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8}, {0x8, 0x1, r9}, {0x8, 0x1, r15}]}, @NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '$'}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x80000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, ','}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x9}]}, 0x98}, 0x1, 0x0, 0x0, 0x44040}, 0x20000000)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x30, r2, 0x1, 0x0, 0x1, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_SIZE_BYTES={0x1}]}, 0x30}, 0x1, 0x0, 0x0, 0x800}, 0x4000001)

19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000200)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x40000000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000100)={0x54, r4, 0x300, 0x70bd29, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xfffffffffffffffb}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x270c}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x54}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="380000000eed927fe183a4241a9feebd1f281c20defe60f0358f65dfa87a0c04d88bd1f4830ba6b61117b88a68be7f32370c319822c79298bb8958add0eb1e135fc841310b09066f55f1df6d1ce5508de4eb04757afadfc7df4f0444b2ddaff1a895839391ed43f15d606d3ad7a38d70d9761c9bfa8676a1ede2a460f4108cce", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000200)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x40000000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000100)={0x54, r4, 0x300, 0x70bd29, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xfffffffffffffffb}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x270c}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x54}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="380000000eed927fe183a4241a9feebd1f281c20defe60f0358f65dfa87a0c04d88bd1f4830ba6b61117b88a68be7f32370c319822c79298bb8958add0eb1e135fc841310b09066f55f1df6d1ce5508de4eb04757afadfc7df4f0444b2ddaff1a895839391ed43f15d606d3ad7a38d70d9761c9bfa8676a1ede2a460f4108cce", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)

19:06:28 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r1, 0x8933, 0x0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000140)={<r2=>0xffffffffffffffff}) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={<r4=>0xffffffffffffffff})
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000300)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000002c0)={&(0x7f00000001c0)={0x74, 0x0, 0x100, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r2}]}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8, 0x1, r4}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x22}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x74}, 0x1, 0x0, 0x0, 0x40000000}, 0x20000000) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)=ANY=[@ANYBLOB="b1007f00", @ANYRES16=0x0, @ANYBLOB="0000000000000000000002000000"], 0x14}}, 0x0) (async)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r5)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='\x00', @ANYRES16=r6, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)
r7 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r7, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r7)

[ 1579.109393] nbd: must specify an index to disconnect
19:06:28 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r1, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:28 executing program 3:
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0)
ioctl$SNDCTL_SEQ_RESET(r0, 0x5100) (async)
ioctl$SNDCTL_SEQ_RESET(r0, 0x5100)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:28 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000080), 0x40802, 0x0) (async)
r8 = openat$pfkey(0xffffffffffffff9c, &(0x7f00000000c0), 0x1, 0x0) (async)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0) (async)
r10 = epoll_create1(0x0)
epoll_ctl$EPOLL_CTL_ADD(r9, 0x1, r10, &(0x7f0000000380)={0x20000000}) (async)
r11 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r12 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r11)
sendmsg$NBD_CMD_DISCONNECT(r11, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r12, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
r13 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000400), 0x200000, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f00000004c0)={&(0x7f00000003c0)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f0000000480)={&(0x7f0000000440)={0x34, r12, 0x400, 0x70bd2c, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r13}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x84}, 0x8001) (async)
r14 = syz_init_net_socket$rose(0xb, 0x5, 0x0)
ioctl$sock_rose_SIOCADDRT(r14, 0x890b, &(0x7f0000000000)={@remote={0xcc, 0xcc, 0xcc, 0xcc, 0x3}, 0x0, @default, @rose={'rose', 0x0}, 0x0, [@rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @default, @default, @default, @null, @null, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @null]}) (async)
r15 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000100), 0x20000, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x98, r4, 0x200, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x44, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}, {0x8, 0x1, r6}, {0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8}, {0x8, 0x1, r9}, {0x8, 0x1, r15}]}, @NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '$'}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x80000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, ','}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x9}]}, 0x98}, 0x1, 0x0, 0x0, 0x44040}, 0x20000000) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x30, r2, 0x1, 0x0, 0x1, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_SIZE_BYTES={0x1}]}, 0x30}, 0x1, 0x0, 0x0, 0x800}, 0x4000001)

19:06:28 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r1, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1579.181792] nbd: must specify an index to disconnect
19:06:28 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\x00\x00\x00\x00', @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:28 executing program 3:
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0)
sendto$rose(r0, &(0x7f0000000000)="c8113f06bb9d393b82bc82192ab707145f5af44dd1b9d95f0438fd5eadf9430d8ba9bb4893c7a3e64e99e2c085fb63d4c26fa9073879eb07fe87d6accccc9f691d13b61a36c0b2096d6a4fe5ed26420affcfa8b6c6f1bb7ac8a42d38ed3203e546afcf6e1137d351167c", 0x6a, 0x40000, &(0x7f0000000080)=@full={0xb, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0x0}, @default, 0x1, [@bcast, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @null, @default, @bcast]}, 0x40)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
r3 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/binder/stats\x00', 0x0, 0x0)
ioctl$SOUND_MIXER_INFO(r3, 0x805c4d65, &(0x7f0000000040))
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0xffffffffffffffd1, &(0x7f0000000240)={&(0x7f0000000080)=ANY=[], 0x38}}, 0x40000)

19:06:28 executing program 0:
r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x400100, 0x0)
ioctl$LOOP_GET_STATUS(r0, 0x4c03, &(0x7f0000000040))
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
ioctl$IOC_WATCH_QUEUE_SET_SIZE(r4, 0x5760, 0x7)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
openat$pfkey(0xffffffffffffff9c, &(0x7f0000000100), 0x80200, 0x0)

[ 1579.208214] nbd: must specify an index to disconnect
19:06:28 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r1, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:28 executing program 3:
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0)
sendto$rose(r0, &(0x7f0000000000)="c8113f06bb9d393b82bc82192ab707145f5af44dd1b9d95f0438fd5eadf9430d8ba9bb4893c7a3e64e99e2c085fb63d4c26fa9073879eb07fe87d6accccc9f691d13b61a36c0b2096d6a4fe5ed26420affcfa8b6c6f1bb7ac8a42d38ed3203e546afcf6e1137d351167c", 0x6a, 0x40000, &(0x7f0000000080)=@full={0xb, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0x0}, @default, 0x1, [@bcast, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @null, @default, @bcast]}, 0x40)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:28 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x20000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=0x0, @ANYBLOB="080026fd70045f4000000008000a006e6264000c000300010001000000000000001d00"/46], 0x34}, 0x1, 0x0, 0x0, 0x40048856}, 0x24004004)
openat$vcsa(0xffffffffffffff9c, &(0x7f0000000140), 0x101000, 0x0)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="4c000300", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000300f8ffffffffffffff0c0002000000000000000000"], 0x4c}}, 0x0)
epoll_ctl$EPOLL_CTL_ADD(0xffffffffffffffff, 0x1, 0xffffffffffffffff, &(0x7f0000000000)={0x50002011})

19:06:28 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x40)

19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
r3 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/binder/stats\x00', 0x0, 0x0)
ioctl$SOUND_MIXER_INFO(r3, 0x805c4d65, &(0x7f0000000040)) (async, rerun: 64)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0) (async, rerun: 64)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0xffffffffffffffd1, &(0x7f0000000240)={&(0x7f0000000080)=ANY=[], 0x38}}, 0x40000)

19:06:28 executing program 0:
r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x400100, 0x0)
ioctl$LOOP_GET_STATUS(r0, 0x4c03, &(0x7f0000000040)) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
ioctl$IOC_WATCH_QUEUE_SET_SIZE(r4, 0x5760, 0x7)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
openat$pfkey(0xffffffffffffff9c, &(0x7f0000000100), 0x80200, 0x0)

19:06:28 executing program 3:
r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r0, 0x8933, 0x0)
sendto$rose(r0, &(0x7f0000000000)="c8113f06bb9d393b82bc82192ab707145f5af44dd1b9d95f0438fd5eadf9430d8ba9bb4893c7a3e64e99e2c085fb63d4c26fa9073879eb07fe87d6accccc9f691d13b61a36c0b2096d6a4fe5ed26420affcfa8b6c6f1bb7ac8a42d38ed3203e546afcf6e1137d351167c", 0x6a, 0x40000, &(0x7f0000000080)=@full={0xb, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0x0}, @default, 0x1, [@bcast, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @null, @default, @bcast]}, 0x40) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:28 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x20000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=0x0, @ANYBLOB="080026fd70045f4000000008000a006e6264000c000300010001000000000000001d00"/46], 0x34}, 0x1, 0x0, 0x0, 0x40048856}, 0x24004004) (async)
openat$vcsa(0xffffffffffffff9c, &(0x7f0000000140), 0x101000, 0x0) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="4c000300", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000300f8ffffffffffffff0c0002000000000000000000"], 0x4c}}, 0x0)
epoll_ctl$EPOLL_CTL_ADD(0xffffffffffffffff, 0x1, 0xffffffffffffffff, &(0x7f0000000000)={0x50002011})

19:06:28 executing program 4:
ioctl$FBIOPAN_DISPLAY(0xffffffffffffffff, 0x4606, &(0x7f0000000500)={0x140, 0x78, 0x10, 0x30, 0x7, 0x81, 0x8, 0x0, {0x65d, 0x401, 0x1}, {0x101, 0x6}, {0x5, 0x7}, {0x9}, 0x1, 0x100, 0xbf9a, 0x80, 0x1, 0x9, 0x6, 0x20, 0x0, 0x8, 0x3, 0x6, 0x11, 0x100, 0x3, 0x7})
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000640)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x2c, 0x0, 0x1, 0x70bd2b, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xfffffffffffffffc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x48}, 0x84)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
ioctl$FBIOPAN_DISPLAY(0xffffffffffffffff, 0x4606, &(0x7f0000000740)={0xa00, 0x1000, 0x640, 0x800, 0x4, 0x4, 0x18, 0x2, {0x7, 0xfffffffe, 0x1}, {0x3, 0x1f}, {0x9, 0x6}, {0xffff45c7, 0xfffffff9, 0x1}, 0x1, 0x2, 0x1, 0x7, 0x1, 0x7, 0x8, 0x16e, 0x3, 0xffff6040, 0x9, 0x1, 0x6, 0x200, 0x0, 0x4})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c00038008000100"/34, @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x4000020}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$SG_BLKTRACESTOP(0xffffffffffffffff, 0x1275, 0x0)
write$cgroup_subtree(0xffffffffffffffff, &(0x7f0000000680)=ANY=[@ANYBLOB="2b6d65536f7279208809a20ee33b52caa65e389f44b2a2d6e94a5b2fe616c9713517eeee4fdd33bccb394e60fb49b0f13f00e6025886a7e6e8cf4a4542b42163951d6cb7988bc7b3a7572ba25a82fbe37028e040d71b49dc59ec96a4f7e253e99cbee09845a7af94c38d9b1acb0a4e0fe245470da1837ad05260f9e65fb1caf564935ee46a737a12d28fef8fb50d8da45deb28495d9ad8a9d4e9ed042d5b27ec5d5596d20e8079b63bbad3f9ccd553d37a2429cc38220e49e1d0086f3a4da9"], 0x8)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1)
ioctl$X86_IOC_RDMSR_REGS(0xffffffffffffffff, 0xc02063a0, &(0x7f0000000480)=[0x3, 0x3ff, 0x7, 0x7, 0x400, 0x1, 0x35, 0x8])
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000140)={0x2c, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x86d6}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1000}]}, 0xfffffffffffffd59}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, 0x0, 0x100, 0x70bd25, 0x25dfdbfe, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x101}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x40}, 0x1, 0x0, 0x0, 0x88840}, 0x4840)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r7, @ANYBLOB="010000000000000000000200000004000a00"], 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000380)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x80}, 0xc, &(0x7f0000000340)={&(0x7f0000000300)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r7, @ANYBLOB="000226bd7000ffdbdf2501000000000c00040004000000000000000400078008000a006e626400"/50], 0x38}, 0x1, 0x0, 0x0, 0x4000}, 0x0)

19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
r3 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/debug/binder/stats\x00', 0x0, 0x0)
ioctl$SOUND_MIXER_INFO(r3, 0x805c4d65, &(0x7f0000000040))
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0xffffffffffffffd1, &(0x7f0000000240)={&(0x7f0000000080)=ANY=[], 0x38}}, 0x40000)

19:06:28 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x40)

[ 1579.396171] nbd: must specify an index to disconnect
19:06:28 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000080)='/sys/kernel/debug/binder/transactions\x00', 0x0, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000000c0)={0x14, r2, 0x1, 0x100000}, 0x14}}, 0x0)
syz_init_net_socket$rose(0xb, 0x5, 0x0)
r3 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x4000, 0x0)
ioctl$X86_IOC_RDMSR_REGS(r3, 0xc02063a0, &(0x7f0000000040)=[0x7, 0xffff7fff, 0x9, 0x0, 0x5, 0x0, 0x7, 0x3])

19:06:28 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x20000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=0x0, @ANYBLOB="080026fd70045f4000000008000a006e6264000c000300010001000000000000001d00"/46], 0x34}, 0x1, 0x0, 0x0, 0x40048856}, 0x24004004) (async)
openat$vcsa(0xffffffffffffff9c, &(0x7f0000000140), 0x101000, 0x0)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="4c000300", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000300f8ffffffffffffff0c0002000000000000000000"], 0x4c}}, 0x0) (async)
epoll_ctl$EPOLL_CTL_ADD(0xffffffffffffffff, 0x1, 0xffffffffffffffff, &(0x7f0000000000)={0x50002011})

19:06:28 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x40)

[ 1579.420292] nbd: must specify at least one socket
19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x50, 0x0, 0x1, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4e}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1b}]}, 0x50}, 0x1, 0x0, 0x0, 0x40001}, 0x4008000)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x30, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x30}}, 0x0)

19:06:28 executing program 4:
ioctl$FBIOPAN_DISPLAY(0xffffffffffffffff, 0x4606, &(0x7f0000000500)={0x140, 0x78, 0x10, 0x30, 0x7, 0x81, 0x8, 0x0, {0x65d, 0x401, 0x1}, {0x101, 0x6}, {0x5, 0x7}, {0x9}, 0x1, 0x100, 0xbf9a, 0x80, 0x1, 0x9, 0x6, 0x20, 0x0, 0x8, 0x3, 0x6, 0x11, 0x100, 0x3, 0x7})
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000640)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x2c, 0x0, 0x1, 0x70bd2b, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xfffffffffffffffc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x48}, 0x84) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000640)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x2c, 0x0, 0x1, 0x70bd2b, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xfffffffffffffffc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x48}, 0x84)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
ioctl$FBIOPAN_DISPLAY(0xffffffffffffffff, 0x4606, &(0x7f0000000740)={0xa00, 0x1000, 0x640, 0x800, 0x4, 0x4, 0x18, 0x2, {0x7, 0xfffffffe, 0x1}, {0x3, 0x1f}, {0x9, 0x6}, {0xffff45c7, 0xfffffff9, 0x1}, 0x1, 0x2, 0x1, 0x7, 0x1, 0x7, 0x8, 0x16e, 0x3, 0xffff6040, 0x9, 0x1, 0x6, 0x200, 0x0, 0x4}) (async)
ioctl$FBIOPAN_DISPLAY(0xffffffffffffffff, 0x4606, &(0x7f0000000740)={0xa00, 0x1000, 0x640, 0x800, 0x4, 0x4, 0x18, 0x2, {0x7, 0xfffffffe, 0x1}, {0x3, 0x1f}, {0x9, 0x6}, {0xffff45c7, 0xfffffff9, 0x1}, 0x1, 0x2, 0x1, 0x7, 0x1, 0x7, 0x8, 0x16e, 0x3, 0xffff6040, 0x9, 0x1, 0x6, 0x200, 0x0, 0x4})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c00038008000100"/34, @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x4000020}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c00038008000100"/34, @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x4000020}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$SG_BLKTRACESTOP(0xffffffffffffffff, 0x1275, 0x0)
write$cgroup_subtree(0xffffffffffffffff, &(0x7f0000000680)=ANY=[@ANYBLOB="2b6d65536f7279208809a20ee33b52caa65e389f44b2a2d6e94a5b2fe616c9713517eeee4fdd33bccb394e60fb49b0f13f00e6025886a7e6e8cf4a4542b42163951d6cb7988bc7b3a7572ba25a82fbe37028e040d71b49dc59ec96a4f7e253e99cbee09845a7af94c38d9b1acb0a4e0fe245470da1837ad05260f9e65fb1caf564935ee46a737a12d28fef8fb50d8da45deb28495d9ad8a9d4e9ed042d5b27ec5d5596d20e8079b63bbad3f9ccd553d37a2429cc38220e49e1d0086f3a4da9"], 0x8) (async)
write$cgroup_subtree(0xffffffffffffffff, &(0x7f0000000680)=ANY=[@ANYBLOB="2b6d65536f7279208809a20ee33b52caa65e389f44b2a2d6e94a5b2fe616c9713517eeee4fdd33bccb394e60fb49b0f13f00e6025886a7e6e8cf4a4542b42163951d6cb7988bc7b3a7572ba25a82fbe37028e040d71b49dc59ec96a4f7e253e99cbee09845a7af94c38d9b1acb0a4e0fe245470da1837ad05260f9e65fb1caf564935ee46a737a12d28fef8fb50d8da45deb28495d9ad8a9d4e9ed042d5b27ec5d5596d20e8079b63bbad3f9ccd553d37a2429cc38220e49e1d0086f3a4da9"], 0x8)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1)
ioctl$X86_IOC_RDMSR_REGS(0xffffffffffffffff, 0xc02063a0, &(0x7f0000000480)=[0x3, 0x3ff, 0x7, 0x7, 0x400, 0x1, 0x35, 0x8])
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000140)={0x2c, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x86d6}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1000}]}, 0xfffffffffffffd59}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, 0x0, 0x100, 0x70bd25, 0x25dfdbfe, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x101}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x40}, 0x1, 0x0, 0x0, 0x88840}, 0x4840)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r7, @ANYBLOB="010000000000000000000200000004000a00"], 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000380)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x80}, 0xc, &(0x7f0000000340)={&(0x7f0000000300)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r7, @ANYBLOB="000226bd7000ffdbdf2501000000000c00040004000000000000000400078008000a006e626400"/50], 0x38}, 0x1, 0x0, 0x0, 0x4000}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000380)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x80}, 0xc, &(0x7f0000000340)={&(0x7f0000000300)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r7, @ANYBLOB="000226bd7000ffdbdf2501000000000c00040004000000000000000400078008000a006e626400"/50], 0x38}, 0x1, 0x0, 0x0, 0x4000}, 0x0)

19:06:28 executing program 0:
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x400100, 0x0) (async)
r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x400100, 0x0)
ioctl$LOOP_GET_STATUS(r0, 0x4c03, &(0x7f0000000040))
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
ioctl$IOC_WATCH_QUEUE_SET_SIZE(r4, 0x5760, 0x7)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
openat$pfkey(0xffffffffffffff9c, &(0x7f0000000100), 0x80200, 0x0) (async)
openat$pfkey(0xffffffffffffff9c, &(0x7f0000000100), 0x80200, 0x0)

[ 1579.487067] nbd: must specify at least one socket
19:06:28 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000080)='/sys/kernel/debug/binder/transactions\x00', 0x0, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000000c0)={0x14, r2, 0x1, 0x100000}, 0x14}}, 0x0) (async)
syz_init_net_socket$rose(0xb, 0x5, 0x0)
r3 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x4000, 0x0)
ioctl$X86_IOC_RDMSR_REGS(r3, 0xc02063a0, &(0x7f0000000040)=[0x7, 0xffff7fff, 0x9, 0x0, 0x5, 0x0, 0x7, 0x3])

19:06:28 executing program 5:
r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000100), 0x400000, 0x0)
read$usbmon(r0, &(0x7f00000002c0)=""/149, 0x95)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000480)={0x150, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x13b, 0xa, '\xee\xc1\x88@\x00\x00\x00\r<\x1c\t\xb6\xb8Q\xbb\xc2\xd0>\x1e%\xc6\xee\x1d\xdd\x17\xee\xdfSI\x1dC\x00\xebT\xc7a\n/\xdeD[\x824P8\xbe\x14\xbf\x9e\x96\xe0\x9d\x15\xde~\b\x01\xa8\xf9\xd2\xed\x10\xfa\xf3]\xad\xbb\xa9\xf79<\xb17 \xfff\xbd\x99\xc7S\xc6\x9e\x00F\x1f\x18\x81E\xed\x04\xc4Rk\xaa\xf0 \x97W\xa1\xc1}\x1d\x9c\xdb\xf5\x85\xa1\xf6kZ\x9f\x0e\xea\xd2\xaf\a|[{yE)\xeb\xc4\xa7\x8f\xcc\xd3vF\x96\x17\xe1q\xeb\x87\xa0\xe2\xde\xd9WzZv7\x86\x0fW\xe1\xb3\xbb\xec\xe2*\x12\x12U\x10\x06\xac%\xadm\xe6f\x8d\xcd\xb0\xba\xd8wl\x9d$*p\xb6\a\xfb]\xd1\x99,`\xb8\xaf\xfc\xdf~\x17\xfamN\x06q\xe4\xb6\xe2\xb3I\x87\xd4\x0e\xb1\x11\xa5\xads\t\t\xf8zMZ\x03\xa6{`\xaaQ\xa8\xf29\xb9:OK\xc5\x06\xa9\x11\xc3m\xf8\xb1#!\xb4 \x82J|OXx\xd7\x8fv\xdf1\xc0\xaa\xa8~\xc0U\xc3I\xb32\xca\xc1Lab\xd31%9\xab\xbc\xb9\xde\x03v\xd7\x82\xf0\x10\x9b\xd7\xb1g\x15@\xdb-\xf1\xe6\xd4w\x9d\x94\x05\x14\x1a\x9e\xacp\xc2\xd5\xb4\xe2\xae\x1e.\a\x87x\xec\xc8'}]}, 0x150}}, 0x8800)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, r4, 0x1, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xa0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x40}, 0x1, 0x0, 0x0, 0xc4}, 0x4)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r5, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060007000000001c00000200"/24], 0x4c}}, 0x0)

[ 1579.521682] nbd: must specify an index to disconnect
19:06:28 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:28 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x50, 0x0, 0x1, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4e}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1b}]}, 0x50}, 0x1, 0x0, 0x0, 0x40001}, 0x4008000)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x30, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x30}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x30, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x30}}, 0x0)

[ 1579.547022] nbd: must specify an index to disconnect
19:06:29 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="80000000", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:29 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000080)='/sys/kernel/debug/binder/transactions\x00', 0x0, 0x0) (async, rerun: 64)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000000c0)={0x14, r2, 0x1, 0x100000}, 0x14}}, 0x0) (async, rerun: 64)
syz_init_net_socket$rose(0xb, 0x5, 0x0)
r3 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x4000, 0x0)
ioctl$X86_IOC_RDMSR_REGS(r3, 0xc02063a0, &(0x7f0000000040)=[0x7, 0xffff7fff, 0x9, 0x0, 0x5, 0x0, 0x7, 0x3])

[ 1579.580409] nbd: must specify at least one socket
[ 1579.596381] nbd: must specify at least one socket
[ 1579.602104] nbd: must specify at least one socket
[ 1579.614134] nbd: must specify an index to disconnect
[ 1579.620729] nbd: must specify a size in bytes for the device
19:06:29 executing program 4:
ioctl$FBIOPAN_DISPLAY(0xffffffffffffffff, 0x4606, &(0x7f0000000500)={0x140, 0x78, 0x10, 0x30, 0x7, 0x81, 0x8, 0x0, {0x65d, 0x401, 0x1}, {0x101, 0x6}, {0x5, 0x7}, {0x9}, 0x1, 0x100, 0xbf9a, 0x80, 0x1, 0x9, 0x6, 0x20, 0x0, 0x8, 0x3, 0x6, 0x11, 0x100, 0x3, 0x7}) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000640)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x2c, 0x0, 0x1, 0x70bd2b, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xfffffffffffffffc}]}, 0x2c}, 0x1, 0x0, 0x0, 0x48}, 0x84) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
ioctl$FBIOPAN_DISPLAY(0xffffffffffffffff, 0x4606, &(0x7f0000000740)={0xa00, 0x1000, 0x640, 0x800, 0x4, 0x4, 0x18, 0x2, {0x7, 0xfffffffe, 0x1}, {0x3, 0x1f}, {0x9, 0x6}, {0xffff45c7, 0xfffffff9, 0x1}, 0x1, 0x2, 0x1, 0x7, 0x1, 0x7, 0x8, 0x16e, 0x3, 0xffff6040, 0x9, 0x1, 0x6, 0x200, 0x0, 0x4}) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c00038008000100"/34, @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x4000020}, 0x0) (async)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
ioctl$SG_BLKTRACESTOP(0xffffffffffffffff, 0x1275, 0x0) (async, rerun: 32)
write$cgroup_subtree(0xffffffffffffffff, &(0x7f0000000680)=ANY=[@ANYBLOB="2b6d65536f7279208809a20ee33b52caa65e389f44b2a2d6e94a5b2fe616c9713517eeee4fdd33bccb394e60fb49b0f13f00e6025886a7e6e8cf4a4542b42163951d6cb7988bc7b3a7572ba25a82fbe37028e040d71b49dc59ec96a4f7e253e99cbee09845a7af94c38d9b1acb0a4e0fe245470da1837ad05260f9e65fb1caf564935ee46a737a12d28fef8fb50d8da45deb28495d9ad8a9d4e9ed042d5b27ec5d5596d20e8079b63bbad3f9ccd553d37a2429cc38220e49e1d0086f3a4da9"], 0x8) (async, rerun: 64)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1) (async, rerun: 64)
ioctl$X86_IOC_RDMSR_REGS(0xffffffffffffffff, 0xc02063a0, &(0x7f0000000480)=[0x3, 0x3ff, 0x7, 0x7, 0x400, 0x1, 0x35, 0x8])
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000140)={0x2c, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x86d6}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1000}]}, 0xfffffffffffffd59}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, 0x0, 0x100, 0x70bd25, 0x25dfdbfe, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x101}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x40}, 0x1, 0x0, 0x0, 0x88840}, 0x4840) (async, rerun: 64)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r7, @ANYBLOB="010000000000000000000200000004000a00"], 0x18}}, 0x0) (async, rerun: 64)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000380)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x80}, 0xc, &(0x7f0000000340)={&(0x7f0000000300)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r7, @ANYBLOB="000226bd7000ffdbdf2501000000000c00040004000000000000000400078008000a006e626400"/50], 0x38}, 0x1, 0x0, 0x0, 0x4000}, 0x0) (rerun: 64)

19:06:29 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x50, 0x0, 0x1, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4e}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1b}]}, 0x50}, 0x1, 0x0, 0x0, 0x40001}, 0x4008000) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x30, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x30}}, 0x0)

19:06:29 executing program 5:
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000100), 0x400000, 0x0) (async)
r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000100), 0x400000, 0x0)
read$usbmon(r0, &(0x7f00000002c0)=""/149, 0x95)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000480)={0x150, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x13b, 0xa, '\xee\xc1\x88@\x00\x00\x00\r<\x1c\t\xb6\xb8Q\xbb\xc2\xd0>\x1e%\xc6\xee\x1d\xdd\x17\xee\xdfSI\x1dC\x00\xebT\xc7a\n/\xdeD[\x824P8\xbe\x14\xbf\x9e\x96\xe0\x9d\x15\xde~\b\x01\xa8\xf9\xd2\xed\x10\xfa\xf3]\xad\xbb\xa9\xf79<\xb17 \xfff\xbd\x99\xc7S\xc6\x9e\x00F\x1f\x18\x81E\xed\x04\xc4Rk\xaa\xf0 \x97W\xa1\xc1}\x1d\x9c\xdb\xf5\x85\xa1\xf6kZ\x9f\x0e\xea\xd2\xaf\a|[{yE)\xeb\xc4\xa7\x8f\xcc\xd3vF\x96\x17\xe1q\xeb\x87\xa0\xe2\xde\xd9WzZv7\x86\x0fW\xe1\xb3\xbb\xec\xe2*\x12\x12U\x10\x06\xac%\xadm\xe6f\x8d\xcd\xb0\xba\xd8wl\x9d$*p\xb6\a\xfb]\xd1\x99,`\xb8\xaf\xfc\xdf~\x17\xfamN\x06q\xe4\xb6\xe2\xb3I\x87\xd4\x0e\xb1\x11\xa5\xads\t\t\xf8zMZ\x03\xa6{`\xaaQ\xa8\xf29\xb9:OK\xc5\x06\xa9\x11\xc3m\xf8\xb1#!\xb4 \x82J|OXx\xd7\x8fv\xdf1\xc0\xaa\xa8~\xc0U\xc3I\xb32\xca\xc1Lab\xd31%9\xab\xbc\xb9\xde\x03v\xd7\x82\xf0\x10\x9b\xd7\xb1g\x15@\xdb-\xf1\xe6\xd4w\x9d\x94\x05\x14\x1a\x9e\xacp\xc2\xd5\xb4\xe2\xae\x1e.\a\x87x\xec\xc8'}]}, 0x150}}, 0x8800)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, r4, 0x1, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xa0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x40}, 0x1, 0x0, 0x0, 0xc4}, 0x4) (async)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, r4, 0x1, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xa0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x40}, 0x1, 0x0, 0x0, 0xc4}, 0x4)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r5, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060007000000001c00000200"/24], 0x4c}}, 0x0)

19:06:29 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="80000000", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1579.639477] nbd: couldn't find a device at index 2
19:06:29 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:29 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r7=>0xffffffffffffffff})
r8 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f00000001c0)={0xfffffffffffffffd, 0x0, &(0x7f0000000140)={&(0x7f00000000c0)={0x4c, r5, 0x2, 0x70bd2c, 0x25dfdbfb, {}, [@NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8, 0x1, r8}, {0x8, 0x1, r9}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x9}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4000}, 0x4000)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

[ 1579.709507] nbd: must specify an index to disconnect
[ 1579.722612] nbd: must specify a size in bytes for the device
[ 1579.738443] nbd: must specify a size in bytes for the device
19:06:29 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="80000000", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:29 executing program 5:
r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000100), 0x400000, 0x0)
read$usbmon(r0, &(0x7f00000002c0)=""/149, 0x95) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000480)={0x150, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x13b, 0xa, '\xee\xc1\x88@\x00\x00\x00\r<\x1c\t\xb6\xb8Q\xbb\xc2\xd0>\x1e%\xc6\xee\x1d\xdd\x17\xee\xdfSI\x1dC\x00\xebT\xc7a\n/\xdeD[\x824P8\xbe\x14\xbf\x9e\x96\xe0\x9d\x15\xde~\b\x01\xa8\xf9\xd2\xed\x10\xfa\xf3]\xad\xbb\xa9\xf79<\xb17 \xfff\xbd\x99\xc7S\xc6\x9e\x00F\x1f\x18\x81E\xed\x04\xc4Rk\xaa\xf0 \x97W\xa1\xc1}\x1d\x9c\xdb\xf5\x85\xa1\xf6kZ\x9f\x0e\xea\xd2\xaf\a|[{yE)\xeb\xc4\xa7\x8f\xcc\xd3vF\x96\x17\xe1q\xeb\x87\xa0\xe2\xde\xd9WzZv7\x86\x0fW\xe1\xb3\xbb\xec\xe2*\x12\x12U\x10\x06\xac%\xadm\xe6f\x8d\xcd\xb0\xba\xd8wl\x9d$*p\xb6\a\xfb]\xd1\x99,`\xb8\xaf\xfc\xdf~\x17\xfamN\x06q\xe4\xb6\xe2\xb3I\x87\xd4\x0e\xb1\x11\xa5\xads\t\t\xf8zMZ\x03\xa6{`\xaaQ\xa8\xf29\xb9:OK\xc5\x06\xa9\x11\xc3m\xf8\xb1#!\xb4 \x82J|OXx\xd7\x8fv\xdf1\xc0\xaa\xa8~\xc0U\xc3I\xb32\xca\xc1Lab\xd31%9\xab\xbc\xb9\xde\x03v\xd7\x82\xf0\x10\x9b\xd7\xb1g\x15@\xdb-\xf1\xe6\xd4w\x9d\x94\x05\x14\x1a\x9e\xacp\xc2\xd5\xb4\xe2\xae\x1e.\a\x87x\xec\xc8'}]}, 0x150}}, 0x8800) (async)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, r4, 0x1, 0x70bd27, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xa0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x40}, 0x1, 0x0, 0x0, 0xc4}, 0x4)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r5, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060007000000001c00000200"/24], 0x4c}}, 0x0)

19:06:29 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000140007800800010001210f010d5ebac49006bdd4af1bd0a2607d0143b1", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:29 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1579.763933] nbd: must specify an index to disconnect
[ 1579.777188] nbd: must specify at least one socket
[ 1579.803301] nbd: must specify at least one socket
19:06:29 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000e8ff00000c00078008002300", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x8000, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$FBIO_WAITFORVSYNC(0xffffffffffffffff, 0x40044620, 0x0)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000400)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r7, @ANYBLOB="00042cbd7000fbdbdf25020000000c00432400000000"], 0x20}, 0x1, 0x0, 0x0, 0x81}, 0x4000000)
pipe2$watch_queue(&(0x7f0000000080)={0xffffffffffffffff, <r8=>0xffffffffffffffff}, 0x80)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r9=>0xffffffffffffffff})
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0x94, r3, 0x409, 0x70bd2a, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x23}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x80000001}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x120}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8, 0x1, r5}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}]}]}, 0x94}, 0x1, 0x0, 0x0, 0x4048881}, 0x8000)

[ 1579.827719] nbd: must specify an index to disconnect
19:06:29 executing program 1:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x14, r2, 0x1}, 0x14}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r7=>0xffffffffffffffff})
r8 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f00000001c0)={0xfffffffffffffffd, 0x0, &(0x7f0000000140)={&(0x7f00000000c0)={0x4c, r5, 0x2, 0x70bd2c, 0x25dfdbfb, {}, [@NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8, 0x1, r8}, {0x8, 0x1, r9}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x9}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4000}, 0x4000) (async)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f00000001c0)={0xfffffffffffffffd, 0x0, &(0x7f0000000140)={&(0x7f00000000c0)={0x4c, r5, 0x2, 0x70bd2c, 0x25dfdbfb, {}, [@NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8, 0x1, r8}, {0x8, 0x1, r9}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x9}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4000}, 0x4000)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:29 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)

19:06:29 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000140007800800010001210f010d5ebac49006bdd4af1bd0a2607d0143b1", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:29 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1579.857477] nbd: must specify an index to disconnect
[ 1579.868480] nbd: must specify a size in bytes for the device
[ 1579.875734] nbd: must specify a size in bytes for the device
[ 1579.891041] nbd: must specify an index to disconnect
19:06:29 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000e8ff00000c00078008002300", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x8000, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$FBIO_WAITFORVSYNC(0xffffffffffffffff, 0x40044620, 0x0)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000400)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r7, @ANYBLOB="00042cbd7000fbdbdf25020000000c00432400000000"], 0x20}, 0x1, 0x0, 0x0, 0x81}, 0x4000000)
pipe2$watch_queue(&(0x7f0000000080)={0xffffffffffffffff, <r8=>0xffffffffffffffff}, 0x80) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r9=>0xffffffffffffffff})
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0x94, r3, 0x409, 0x70bd2a, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x23}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x80000001}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x120}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8, 0x1, r5}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}]}]}, 0x94}, 0x1, 0x0, 0x0, 0x4048881}, 0x8000)

19:06:29 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000540)={&(0x7f0000000480)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000500)={&(0x7f00000004c0)={0x2c, r4, 0x800, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x2c}, 0x1, 0x0, 0x0, 0x801}, 0x20000000)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000040), 0x208200, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r7=>0xffffffffffffffff}}, './file0\x00'})
r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r9 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r10 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r9)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r10, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r8, &(0x7f0000000440)={&(0x7f0000000380)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x34, r10, 0x2, 0x70bd2d, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0xc, 0xa, '-\\!\\\\#(-'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}]}, 0x34}, 0x1, 0x0, 0x0, 0x40000}, 0x4801)
r11 = openat$vcsa(0xffffffffffffff9c, &(0x7f00000000c0), 0x44800, 0x0)
r12 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000100), 0x8000, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x44, r5, 0x300, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}]}, 0x44}, 0x1, 0x0, 0x0, 0x40044}, 0x20000004)

19:06:29 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000140007800800010001210f010d5ebac49006bdd4af1bd0a2607d0143b1", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000140007800800010001210f010d5ebac49006bdd4af1bd0a2607d0143b1", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)

[ 1579.931023] nbd: must specify a size in bytes for the device
[ 1579.956275] nbd: must specify at least one socket
[ 1579.968077] nbd: must specify an index to disconnect
19:06:29 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)

19:06:29 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={0x0}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:29 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000e8ff00000c00078008002300", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async, rerun: 64)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0) (async, rerun: 64)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x8000, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async, rerun: 32)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
ioctl$FBIO_WAITFORVSYNC(0xffffffffffffffff, 0x40044620, 0x0) (async)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000400)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f00000003c0)={&(0x7f0000000380)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r7, @ANYBLOB="00042cbd7000fbdbdf25020000000c00432400000000"], 0x20}, 0x1, 0x0, 0x0, 0x81}, 0x4000000) (async)
pipe2$watch_queue(&(0x7f0000000080)={0xffffffffffffffff, <r8=>0xffffffffffffffff}, 0x80) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r9=>0xffffffffffffffff}) (async, rerun: 64)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (rerun: 64)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0) (async, rerun: 64)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0x94, r3, 0x409, 0x70bd2a, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x23}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x80000001}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x120}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8, 0x1, r5}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}]}]}, 0x94}, 0x1, 0x0, 0x0, 0x4048881}, 0x8000) (rerun: 64)

[ 1579.978286] nbd: must specify an index to disconnect
[ 1579.998811] nbd: must specify a size in bytes for the device
19:06:29 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x14, r2, 0x1}, 0x14}}, 0x0) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0) (async)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r7=>0xffffffffffffffff}) (async)
r8 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) (async)
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f00000001c0)={0xfffffffffffffffd, 0x0, &(0x7f0000000140)={&(0x7f00000000c0)={0x4c, r5, 0x2, 0x70bd2c, 0x25dfdbfb, {}, [@NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8, 0x1, r8}, {0x8, 0x1, r9}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x9}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4000}, 0x4000) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:29 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)

19:06:29 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={0x0}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1580.026406] nbd: must specify an index to disconnect
[ 1580.038513] nbd: must specify a size in bytes for the device
[ 1580.057691] nbd: must specify at least one socket
[ 1580.069885] nbd: must specify an index to disconnect
19:06:29 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x50, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xfffffffffffffa5c}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}]}, 0x50}, 0x1, 0x0, 0x0, 0x10}, 0x0)

[ 1580.088529] nbd: must specify an index to disconnect
19:06:29 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000040)={{0x1, 0x1, 0x18, <r6=>0xffffffffffffffff}, './file0\x00'})
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
r8 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000080), 0x10000, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f00000000c0)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r9=>0xffffffffffffffff}}, './file0\x00'})
pipe2$watch_queue(&(0x7f0000000100)={0xffffffffffffffff, <r10=>0xffffffffffffffff}, 0x80)
r11 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000140)='/sys/kernel/debug/binder/state\x00', 0x0, 0x0)
r12 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000200), 0x204001, 0x0)
r13 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r13, 0x8933, 0x0)
pipe2$watch_queue(&(0x7f00000002c0)={0xffffffffffffffff, <r14=>0xffffffffffffffff}, 0x80)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000300)={<r15=>0xffffffffffffffff})
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000004c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000080}, 0xc, &(0x7f0000000480)={&(0x7f0000000340)={0x108, r5, 0x200, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4b}, @NBD_ATTR_SOCKETS={0x54, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8000000000000000}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x81}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_SOCKETS={0x44, 0x7, 0x0, 0x1, [{0x8, 0x1, r11}, {0x8}, {0x8}, {0x8, 0x1, r12}, {0x8, 0x1, r13}, {0x8, 0x1, r14}, {0x8, 0x1, r15}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x108}, 0x1, 0x0, 0x0, 0x8000}, 0x84)

19:06:29 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000540)={&(0x7f0000000480)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000500)={&(0x7f00000004c0)={0x2c, r4, 0x800, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x2c}, 0x1, 0x0, 0x0, 0x801}, 0x20000000) (async)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async, rerun: 64)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000040), 0x208200, 0x0) (async, rerun: 64)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r7=>0xffffffffffffffff}}, './file0\x00'}) (async)
r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r9 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r10 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r9)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r10, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async, rerun: 32)
sendmsg$NBD_CMD_CONNECT(r8, &(0x7f0000000440)={&(0x7f0000000380)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x34, r10, 0x2, 0x70bd2d, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0xc, 0xa, '-\\!\\\\#(-'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}]}, 0x34}, 0x1, 0x0, 0x0, 0x40000}, 0x4801) (async, rerun: 32)
r11 = openat$vcsa(0xffffffffffffff9c, &(0x7f00000000c0), 0x44800, 0x0)
r12 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000100), 0x8000, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x44, r5, 0x300, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}]}, 0x44}, 0x1, 0x0, 0x0, 0x40044}, 0x20000004)

[ 1580.133571] nbd: must specify at least one socket
19:06:29 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x50, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xfffffffffffffa5c}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}]}, 0x50}, 0x1, 0x0, 0x0, 0x10}, 0x0)

19:06:29 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000040), 0x4000, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x38, 0x0, 0x100, 0x70bd2a, 0x25dfdbfb, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}, {0x8}, {0x8, 0x1, r3}]}]}, 0x38}, 0x1, 0x0, 0x0, 0x40008d4}, 0x4004000)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r5, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1580.158735] nbd: must specify an index to disconnect
19:06:29 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={0x0}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1580.182927] nbd: must specify an index to disconnect
19:06:29 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000040), 0x4000, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x38, 0x0, 0x100, 0x70bd2a, 0x25dfdbfb, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}, {0x8}, {0x8, 0x1, r3}]}]}, 0x38}, 0x1, 0x0, 0x0, 0x40008d4}, 0x4004000) (async)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x38, 0x0, 0x100, 0x70bd2a, 0x25dfdbfb, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}, {0x8}, {0x8, 0x1, r3}]}]}, 0x38}, 0x1, 0x0, 0x0, 0x40008d4}, 0x4004000)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r5, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:29 executing program 1:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) (async)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000040)={{0x1, 0x1, 0x18}, './file0\x00'}) (async)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000040)={{0x1, 0x1, 0x18, <r6=>0xffffffffffffffff}, './file0\x00'})
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000080), 0x10000, 0x0) (async)
r8 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000080), 0x10000, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f00000000c0)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r9=>0xffffffffffffffff}}, './file0\x00'})
pipe2$watch_queue(&(0x7f0000000100)={0xffffffffffffffff, <r10=>0xffffffffffffffff}, 0x80)
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000140)='/sys/kernel/debug/binder/state\x00', 0x0, 0x0) (async)
r11 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000140)='/sys/kernel/debug/binder/state\x00', 0x0, 0x0)
openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000200), 0x204001, 0x0) (async)
r12 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000200), 0x204001, 0x0)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
r13 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r13, 0x8933, 0x0)
pipe2$watch_queue(&(0x7f00000002c0)={0xffffffffffffffff, <r14=>0xffffffffffffffff}, 0x80)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000300)={<r15=>0xffffffffffffffff})
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000004c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000080}, 0xc, &(0x7f0000000480)={&(0x7f0000000340)={0x108, r5, 0x200, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4b}, @NBD_ATTR_SOCKETS={0x54, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8000000000000000}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x81}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_SOCKETS={0x44, 0x7, 0x0, 0x1, [{0x8, 0x1, r11}, {0x8}, {0x8}, {0x8, 0x1, r12}, {0x8, 0x1, r13}, {0x8, 0x1, r14}, {0x8, 0x1, r15}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x108}, 0x1, 0x0, 0x0, 0x8000}, 0x84)

[ 1580.209838] nbd: must specify an index to disconnect
[ 1580.245967] nbd: must specify at least one socket
19:06:29 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000000000000100000000000000000c000780080001040223ebd91f4515d10846faf243b083aa534ff4b11d6eb67302c6ab19cdad72f5a8037590dda1c786729dd1cb78c6b397d6e791387921f0415b9c5c006931e7d4d4f9fe80aae49ca1c859f9d58b69439db8", @ANYRES32, @ANYBLOB="05000a00250000000c00030000ffffffffffffff"], 0x40}, 0x1, 0x0, 0x0, 0x1}, 0x811)

19:06:29 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x74, 0x0, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:29 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x50, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xfffffffffffffa5c}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x100}]}, 0x50}, 0x1, 0x0, 0x0, 0x10}, 0x0)

19:06:29 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000540)={&(0x7f0000000480)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000500)={&(0x7f00000004c0)={0x2c, r4, 0x800, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x2c}, 0x1, 0x0, 0x0, 0x801}, 0x20000000)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000040), 0x208200, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r7=>0xffffffffffffffff}}, './file0\x00'})
r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r9 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r10 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r9)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r10, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r8, &(0x7f0000000440)={&(0x7f0000000380)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x34, r10, 0x2, 0x70bd2d, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0xc, 0xa, '-\\!\\\\#(-'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}]}, 0x34}, 0x1, 0x0, 0x0, 0x40000}, 0x4801)
r11 = openat$vcsa(0xffffffffffffff9c, &(0x7f00000000c0), 0x44800, 0x0)
r12 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000100), 0x8000, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x44, r5, 0x300, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}]}, 0x44}, 0x1, 0x0, 0x0, 0x40044}, 0x20000004)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000540)={&(0x7f0000000480)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000500)={&(0x7f00000004c0)={0x2c, r4, 0x800, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x2c}, 0x1, 0x0, 0x0, 0x801}, 0x20000000) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000040), 0x208200, 0x0) (async)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18}, './file0\x00'}) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r9) (async)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r10, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r8, &(0x7f0000000440)={&(0x7f0000000380)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x34, r10, 0x2, 0x70bd2d, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0xc, 0xa, '-\\!\\\\#(-'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}]}, 0x34}, 0x1, 0x0, 0x0, 0x40000}, 0x4801) (async)
openat$vcsa(0xffffffffffffff9c, &(0x7f00000000c0), 0x44800, 0x0) (async)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000100), 0x8000, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x44, r5, 0x300, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}]}, 0x44}, 0x1, 0x0, 0x0, 0x40044}, 0x20000004) (async)

19:06:29 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x74, 0x0, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1580.291828] nbd: must specify an index to disconnect
19:06:29 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000040), 0x4000, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x38, 0x0, 0x100, 0x70bd2a, 0x25dfdbfb, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}, {0x8}, {0x8, 0x1, r3}]}]}, 0x38}, 0x1, 0x0, 0x0, 0x40008d4}, 0x4004000)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r5, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000040), 0x4000, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x38, 0x0, 0x100, 0x70bd2a, 0x25dfdbfb, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8}, {0x8}, {0x8, 0x1, r3}]}]}, 0x38}, 0x1, 0x0, 0x0, 0x40008d4}, 0x4004000) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r5, 0x1, 0x70bd25, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x4}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

19:06:29 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000040)={{0x1, 0x1, 0x18, <r6=>0xffffffffffffffff}, './file0\x00'})
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0) (async)
r8 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000080), 0x10000, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f00000000c0)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r9=>0xffffffffffffffff}}, './file0\x00'}) (async)
pipe2$watch_queue(&(0x7f0000000100)={0xffffffffffffffff, <r10=>0xffffffffffffffff}, 0x80) (async)
r11 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000140)='/sys/kernel/debug/binder/state\x00', 0x0, 0x0) (async, rerun: 64)
r12 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000200), 0x204001, 0x0) (rerun: 64)
r13 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r13, 0x8933, 0x0) (async, rerun: 64)
pipe2$watch_queue(&(0x7f00000002c0)={0xffffffffffffffff, <r14=>0xffffffffffffffff}, 0x80) (async, rerun: 64)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000300)={<r15=>0xffffffffffffffff})
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000004c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000080}, 0xc, &(0x7f0000000480)={&(0x7f0000000340)={0x108, r5, 0x200, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4b}, @NBD_ATTR_SOCKETS={0x54, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8000000000000000}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x81}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_SOCKETS={0x44, 0x7, 0x0, 0x1, [{0x8, 0x1, r11}, {0x8}, {0x8}, {0x8, 0x1, r12}, {0x8, 0x1, r13}, {0x8, 0x1, r14}, {0x8, 0x1, r15}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x108}, 0x1, 0x0, 0x0, 0x8000}, 0x84)

19:06:29 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x4c, r4, 0x300, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x7, 0xa, ')+:'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4080000}, 0x10)

19:06:29 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000000000000100000000000000000c000780080001040223ebd91f4515d10846faf243b083aa534ff4b11d6eb67302c6ab19cdad72f5a8037590dda1c786729dd1cb78c6b397d6e791387921f0415b9c5c006931e7d4d4f9fe80aae49ca1c859f9d58b69439db8", @ANYRES32, @ANYBLOB="05000a00250000000c00030000ffffffffffffff"], 0x40}, 0x1, 0x0, 0x0, 0x1}, 0x811) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000000000000100000000000000000c000780080001040223ebd91f4515d10846faf243b083aa534ff4b11d6eb67302c6ab19cdad72f5a8037590dda1c786729dd1cb78c6b397d6e791387921f0415b9c5c006931e7d4d4f9fe80aae49ca1c859f9d58b69439db8", @ANYRES32, @ANYBLOB="05000a00250000000c00030000ffffffffffffff"], 0x40}, 0x1, 0x0, 0x0, 0x1}, 0x811)

19:06:29 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x74, 0x0, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1580.328274] nbd: must specify at least one socket
[ 1580.341032] nbd: must specify an index to disconnect
[ 1580.368050] nbd: must specify an index to disconnect
19:06:29 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x4c, r4, 0x300, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x7, 0xa, ')+:'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4080000}, 0x10)

19:06:29 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
socketpair(0x5, 0x5, 0x0, &(0x7f0000000040)={0xffffffffffffffff, <r3=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000080)={0x54, r1, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r3}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc}]}, 0x54}}, 0x4000004)

19:06:29 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000000000000100000000000000000c000780080001040223ebd91f4515d10846faf243b083aa534ff4b11d6eb67302c6ab19cdad72f5a8037590dda1c786729dd1cb78c6b397d6e791387921f0415b9c5c006931e7d4d4f9fe80aae49ca1c859f9d58b69439db8", @ANYRES32, @ANYBLOB="05000a00250000000c00030000ffffffffffffff"], 0x40}, 0x1, 0x0, 0x0, 0x1}, 0x811)

[ 1580.415201] nbd: must specify an index to disconnect
19:06:29 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:29 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x0, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:29 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000e1144d80569e1b775338b4ff72b05ae7d3289b99588b22aff3e4ae6958d850316bbad640241e80d3dc48bb1888037108cf2bf58be142065648caef849ee06b3513467cd4513acc551f5b2cf5390ae6da0e7d0f66ffc3d9ff944d29f9920d6932261ccb451056ab4e531f4430fd2a363091407092cc699656f219117a8937a55330bbbc7ea8a11134e256144c443ad21a78ea327093fe48eeebc5f4fdf5caae2c40767bdaa14b988681c38dcc95ab904ea372cf86979a507b0337d3255c46108b47626959b740c707bbe9bb641a7487c0b7ec22ed4c6c46a0a66500"/248], 0x38}}, 0x0)

19:06:30 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, 0x0, 0x800, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xb}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xefe}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x40}, 0x1, 0x0, 0x0, 0x40002}, 0x0)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:30 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:30 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x0, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:30 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0) (async)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
socketpair(0x5, 0x5, 0x0, &(0x7f0000000040)={0xffffffffffffffff, <r3=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000080)={0x54, r1, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r3}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc}]}, 0x54}}, 0x4000004) (async)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000080)={0x54, r1, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r3}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc}]}, 0x54}}, 0x4000004)

19:06:30 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x4c, r4, 0x300, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x7, 0xa, ')+:'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4080000}, 0x10)

19:06:30 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000e1144d80569e1b775338b4ff72b05ae7d3289b99588b22aff3e4ae6958d850316bbad640241e80d3dc48bb1888037108cf2bf58be142065648caef849ee06b3513467cd4513acc551f5b2cf5390ae6da0e7d0f66ffc3d9ff944d29f9920d6932261ccb451056ab4e531f4430fd2a363091407092cc699656f219117a8937a55330bbbc7ea8a11134e256144c443ad21a78ea327093fe48eeebc5f4fdf5caae2c40767bdaa14b988681c38dcc95ab904ea372cf86979a507b0337d3255c46108b47626959b740c707bbe9bb641a7487c0b7ec22ed4c6c46a0a66500"/248], 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000e1144d80569e1b775338b4ff72b05ae7d3289b99588b22aff3e4ae6958d850316bbad640241e80d3dc48bb1888037108cf2bf58be142065648caef849ee06b3513467cd4513acc551f5b2cf5390ae6da0e7d0f66ffc3d9ff944d29f9920d6932261ccb451056ab4e531f4430fd2a363091407092cc699656f219117a8937a55330bbbc7ea8a11134e256144c443ad21a78ea327093fe48eeebc5f4fdf5caae2c40767bdaa14b988681c38dcc95ab904ea372cf86979a507b0337d3255c46108b47626959b740c707bbe9bb641a7487c0b7ec22ed4c6c46a0a66500"/248], 0x38}}, 0x0) (async)

19:06:30 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x0, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1580.718216] nla_parse: 363 callbacks suppressed
[ 1580.718223] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
[ 1580.745494] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
19:06:30 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, 0x0, 0x800, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xb}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xefe}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x40}, 0x1, 0x0, 0x0, 0x40002}, 0x0)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, 0x0, 0x800, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xb}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xefe}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x40}, 0x1, 0x0, 0x0, 0x40002}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)

19:06:30 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1580.768426] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
[ 1580.780206] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'.
[ 1580.804676] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'.
19:06:30 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x121, 0x0, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:30 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000e1144d80569e1b775338b4ff72b05ae7d3289b99588b22aff3e4ae6958d850316bbad640241e80d3dc48bb1888037108cf2bf58be142065648caef849ee06b3513467cd4513acc551f5b2cf5390ae6da0e7d0f66ffc3d9ff944d29f9920d6932261ccb451056ab4e531f4430fd2a363091407092cc699656f219117a8937a55330bbbc7ea8a11134e256144c443ad21a78ea327093fe48eeebc5f4fdf5caae2c40767bdaa14b988681c38dcc95ab904ea372cf86979a507b0337d3255c46108b47626959b740c707bbe9bb641a7487c0b7ec22ed4c6c46a0a66500"/248], 0x38}}, 0x0)

19:06:30 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r4, 0x8, 0x70bd2a, 0x2, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x10}, 0x800)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:30 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
socketpair(0x5, 0x5, 0x0, &(0x7f0000000040)={0xffffffffffffffff, <r3=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000080)={0x54, r1, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r3}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc}]}, 0x54}}, 0x4000004)

[ 1580.829744] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
19:06:30 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:30 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x121, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:30 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, 0x0, 0x800, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xb}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xefe}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x40}, 0x1, 0x0, 0x0, 0x40002}, 0x0)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, 0x0, 0x800, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xb}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xefe}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x40}, 0x1, 0x0, 0x0, 0x40002}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)

[ 1580.872268] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
[ 1580.883550] nbd: couldn't find a device at index 2
[ 1580.896382] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
19:06:30 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x64, 0x0, 0x20, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1f}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x64}, 0x1, 0x0, 0x0, 0x48091}, 0x48)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000140)={0x40, r3, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0xc0e}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x379}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x40}, 0x1, 0x0, 0x0, 0x20000040}, 0x0)

19:06:30 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x40100100}, 0xc, &(0x7f00000001c0)={&(0x7f00000000c0)={0x38, 0x0, 0x400, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x38}, 0x1, 0x0, 0x0, 0x4048005}, 0x11)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x48801, 0x0)
r6 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000040), 0x22440, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)=ANY=[@ANYBLOB='d\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\x00\x00\x00\x00', @ANYRES32, @ANYBLOB="0c000800070000000000000024006496d4cfe54e80cca1b0e5bf2ba5078008000100", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32=r5, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB], 0x64}}, 0x0)

[ 1580.936171] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'.
[ 1580.962217] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'.
19:06:30 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:30 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x68, r2, 0x121, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}]}, 0x68}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:30 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
r2 = shmget(0x2, 0x3000, 0x200, &(0x7f0000ffc000/0x3000)=nil)
shmctl$SHM_LOCK(r2, 0xb)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:30 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x64, 0x0, 0x20, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1f}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x64}, 0x1, 0x0, 0x0, 0x48091}, 0x48)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000140)={0x40, r3, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0xc0e}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x379}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x40}, 0x1, 0x0, 0x0, 0x20000040}, 0x0)

[ 1580.986897] nbd: couldn't find a device at index 2
19:06:30 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r4, 0x8, 0x70bd2a, 0x2, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x10}, 0x800)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0) (async)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r4, 0x8, 0x70bd2a, 0x2, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x10}, 0x800) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

19:06:30 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x40100100}, 0xc, &(0x7f00000001c0)={&(0x7f00000000c0)={0x38, 0x0, 0x400, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x38}, 0x1, 0x0, 0x0, 0x4048005}, 0x11) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async, rerun: 32)
r5 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x48801, 0x0) (async, rerun: 32)
r6 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000040), 0x22440, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)=ANY=[@ANYBLOB='d\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\x00\x00\x00\x00', @ANYRES32, @ANYBLOB="0c000800070000000000000024006496d4cfe54e80cca1b0e5bf2ba5078008000100", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32=r5, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB], 0x64}}, 0x0)

[ 1581.027089] nbd: must specify a size in bytes for the device
19:06:30 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:30 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x5c, r2, 0x121, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1581.076898] nbd: couldn't find a device at index 2
19:06:30 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
r2 = shmget(0x2, 0x3000, 0x200, &(0x7f0000ffc000/0x3000)=nil)
shmctl$SHM_LOCK(r2, 0xb) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:30 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x64, 0x0, 0x20, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x8}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1f}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x100}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x64}, 0x1, 0x0, 0x0, 0x48091}, 0x48) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000140)={0x40, r3, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0xc0e}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x379}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x40}, 0x1, 0x0, 0x0, 0x20000040}, 0x0)

19:06:30 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = openat$full(0xffffffffffffff9c, &(0x7f0000000100), 0x4000, 0x0)
write$P9_RGETATTR(r3, &(0x7f00000002c0)={0xa0, 0x19, 0x2, {0x2000, {0x2, 0x2}, 0x12b, 0xee00, 0xffffffffffffffff, 0x200, 0x6, 0x100000000, 0x0, 0x6, 0x8, 0x6, 0x4, 0x1, 0xfffffffffffffffc, 0x10001, 0x7fffffff, 0x8, 0xfff, 0xffffffffffffffbc}}, 0xa0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB='<fa?', @ANYRES16=r2, @ANYBLOB="02002abd7000fddbdf25050000000c00060004000000000000000c00040000020000000000000c000200020000000000000004000a00"], 0x3c}, 0x1, 0x0, 0x0, 0x20000840}, 0x40004)

19:06:30 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r4, 0x8, 0x70bd2a, 0x2, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x10}, 0x800) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:30 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff) (async)
r2 = shmget(0x2, 0x3000, 0x200, &(0x7f0000ffc000/0x3000)=nil)
shmctl$SHM_LOCK(r2, 0xb) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:30 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x40100100}, 0xc, &(0x7f00000001c0)={&(0x7f00000000c0)={0x38, 0x0, 0x400, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x38}, 0x1, 0x0, 0x0, 0x4048005}, 0x11)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x48801, 0x0) (async)
r5 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x48801, 0x0)
r6 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000040), 0x22440, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)=ANY=[@ANYBLOB='d\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\x00\x00\x00\x00', @ANYRES32, @ANYBLOB="0c000800070000000000000024006496d4cfe54e80cca1b0e5bf2ba5078008000100", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32=r5, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB], 0x64}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)=ANY=[@ANYBLOB='d\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\x00\x00\x00\x00', @ANYRES32, @ANYBLOB="0c000800070000000000000024006496d4cfe54e80cca1b0e5bf2ba5078008000100", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32=r5, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB], 0x64}}, 0x0)

[ 1581.174967] nbd: couldn't find a device at index 2
19:06:30 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x50, r2, 0x121, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}]}, 0x50}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:30 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x24, r3, 0x200, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x24}, 0x1, 0x0, 0x0, 0x24084000}, 0x4000004)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x58, r5, 0x0, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x49b9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x81}]}, 0x58}, 0x1, 0x0, 0x0, 0x10}, 0x10)

19:06:30 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = openat$full(0xffffffffffffff9c, &(0x7f0000000100), 0x4000, 0x0)
write$P9_RGETATTR(r3, &(0x7f00000002c0)={0xa0, 0x19, 0x2, {0x2000, {0x2, 0x2}, 0x12b, 0xee00, 0xffffffffffffffff, 0x200, 0x6, 0x100000000, 0x0, 0x6, 0x8, 0x6, 0x4, 0x1, 0xfffffffffffffffc, 0x10001, 0x7fffffff, 0x8, 0xfff, 0xffffffffffffffbc}}, 0xa0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB='<fa?', @ANYRES16=r2, @ANYBLOB="02002abd7000fddbdf25050000000c00060004000000000000000c00040000020000000000000c000200020000000000000004000a00"], 0x3c}, 0x1, 0x0, 0x0, 0x20000840}, 0x40004)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
openat$full(0xffffffffffffff9c, &(0x7f0000000100), 0x4000, 0x0) (async)
write$P9_RGETATTR(r3, &(0x7f00000002c0)={0xa0, 0x19, 0x2, {0x2000, {0x2, 0x2}, 0x12b, 0xee00, 0xffffffffffffffff, 0x200, 0x6, 0x100000000, 0x0, 0x6, 0x8, 0x6, 0x4, 0x1, 0xfffffffffffffffc, 0x10001, 0x7fffffff, 0x8, 0xfff, 0xffffffffffffffbc}}, 0xa0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB='<fa?', @ANYRES16=r2, @ANYBLOB="02002abd7000fddbdf25050000000c00060004000000000000000c00040000020000000000000c000200020000000000000004000a00"], 0x3c}, 0x1, 0x0, 0x0, 0x20000840}, 0x40004) (async)

19:06:30 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_open_dev$sg(&(0x7f0000000000), 0x1000000000000000, 0x101000)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x48, r2, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:30 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_open_dev$sg(&(0x7f0000000000), 0x1000000000000000, 0x101000)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x48, r2, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x48, r2, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:30 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="f37a274258b3d575b602c1ede061fc38004020", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000800a09b0000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x4000001)

19:06:30 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x40, r2, 0x121, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}]}, 0x40}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1581.273234] nbd: couldn't find a device at index 2
19:06:30 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x24, r3, 0x200, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x24}, 0x1, 0x0, 0x0, 0x24084000}, 0x4000004)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x58, r5, 0x0, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x49b9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x81}]}, 0x58}, 0x1, 0x0, 0x0, 0x10}, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x24, r3, 0x200, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x24}, 0x1, 0x0, 0x0, 0x24084000}, 0x4000004) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0) (async)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x58, r5, 0x0, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x49b9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x81}]}, 0x58}, 0x1, 0x0, 0x0, 0x10}, 0x10) (async)

19:06:30 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="f37a274258b3d575b602c1ede061fc38004020", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000800a09b0000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x4000001)

19:06:30 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_open_dev$sg(&(0x7f0000000000), 0x1000000000000000, 0x101000)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x48, r2, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_open_dev$sg(&(0x7f0000000000), 0x1000000000000000, 0x101000) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x48, r2, 0x200, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r3}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0) (async)

[ 1581.320653] nbd: must specify a size in bytes for the device
[ 1581.328249] nbd: must specify a size in bytes for the device
19:06:30 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000feffffff010000000c000300000000000000000008000a006e6264000c00020006000000000000000c00020000000000000000008dd50cd7ee5af94c6277d86241989760721d9d3b66c9c6de07b2ceb4385a51baf5fe57450b03ce504bb031db7c9c17839c9d8144d64adcd814f78961528554812ad7b3742111ca9e45811caf31f0b084735af273ec7e4cc994a9c95e7081222279727bcb11c79336320fe3fb81dca0abd38b0958021b4d5159b228d51a47fbaa01114c96c1669a21a6a728f2196cb711a35bf12a1382fc9693b2c3a664934f5455890e10b8d13751cb719e9c6fe9d1eb43a549a35550a9d9"], 0x40}}, 0x0)

19:06:30 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = openat$full(0xffffffffffffff9c, &(0x7f0000000100), 0x4000, 0x0)
write$P9_RGETATTR(r3, &(0x7f00000002c0)={0xa0, 0x19, 0x2, {0x2000, {0x2, 0x2}, 0x12b, 0xee00, 0xffffffffffffffff, 0x200, 0x6, 0x100000000, 0x0, 0x6, 0x8, 0x6, 0x4, 0x1, 0xfffffffffffffffc, 0x10001, 0x7fffffff, 0x8, 0xfff, 0xffffffffffffffbc}}, 0xa0) (async, rerun: 64)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB='<fa?', @ANYRES16=r2, @ANYBLOB="02002abd7000fddbdf25050000000c00060004000000000000000c00040000020000000000000c000200020000000000000004000a00"], 0x3c}, 0x1, 0x0, 0x0, 0x20000840}, 0x40004)

19:06:30 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x34, r2, 0x121, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x34}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:30 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x24, r3, 0x200, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x24}, 0x1, 0x0, 0x0, 0x24084000}, 0x4000004) (async)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x24, r3, 0x200, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x24}, 0x1, 0x0, 0x0, 0x24084000}, 0x4000004)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0) (async)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x58, r5, 0x0, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x5}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x49b9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x81}]}, 0x58}, 0x1, 0x0, 0x0, 0x10}, 0x10)

[ 1581.375976] nbd: couldn't find a device at index 2
19:06:30 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000feffffff010000000c000300000000000000000008000a006e6264000c00020006000000000000000c00020000000000000000008dd50cd7ee5af94c6277d86241989760721d9d3b66c9c6de07b2ceb4385a51baf5fe57450b03ce504bb031db7c9c17839c9d8144d64adcd814f78961528554812ad7b3742111ca9e45811caf31f0b084735af273ec7e4cc994a9c95e7081222279727bcb11c79336320fe3fb81dca0abd38b0958021b4d5159b228d51a47fbaa01114c96c1669a21a6a728f2196cb711a35bf12a1382fc9693b2c3a664934f5455890e10b8d13751cb719e9c6fe9d1eb43a549a35550a9d9"], 0x40}}, 0x0)

19:06:30 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="f37a274258b3d575b602c1ede061fc38004020", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000800a09b0000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x4000001) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="f37a274258b3d575b602c1ede061fc38004020", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000800a09b0000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x4000001)

19:06:30 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$full(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
write$P9_RAUTH(r3, &(0x7f0000000100)={0x14, 0x67, 0x2, {0x8, 0x3}}, 0x14)
r7 = openat$zero(0xffffffffffffff9c, &(0x7f00000000c0), 0x400b80, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000300078008000100", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32=r7, @ANYBLOB, @ANYRES32=r5, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB], 0x6c}}, 0x0)

[ 1581.423592] nbd: must specify at least one socket
[ 1581.438694] nbd: couldn't find a device at index 2
19:06:30 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x28, r2, 0x121, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x28}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:30 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x74, r2, 0x300, 0x70bd29, 0x25dfdbfd, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7fffffff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xfffffffffffffffd}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x100000001}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xfff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x400}]}, 0x74}, 0x1, 0x0, 0x0, 0x800}, 0x24000040)
r3 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000340), 0x400800, 0x0)
ioctl$FBIOPUTCMAP(r3, 0x4605, &(0x7f0000000480)={0x1, 0x4, &(0x7f0000000380)=[0x800, 0x101, 0x3ea, 0x4], &(0x7f00000003c0)=[0x1, 0x4, 0x401, 0x3, 0x81], &(0x7f0000000400)=[0x5], &(0x7f0000000440)=[0x2, 0x101, 0x229a, 0x9, 0x3f, 0x6, 0xffff]})
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000300)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000002c0)={&(0x7f0000000200)={0x20, r2, 0x1, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x20004)

19:06:30 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
r3 = syz_open_dev$sg(&(0x7f0000000040), 0xff, 0x20001)
ioctl$SCSI_IOCTL_DOORUNLOCK(r3, 0x5381)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x10, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x40}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x34}}, 0x0)

19:06:30 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r3=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x401}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_BACKEND_IDENTIFIER={0xf, 0xa, '#\'*}-\':#)%#'}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8, 0x1, r3}, {0x8}, {0x8}]}]}, 0x78}}, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(0xffffffffffffffff, 0x8933, 0x0)
ioctl$SOUND_MIXER_INFO(0xffffffffffffffff, 0x805c4d65, &(0x7f0000000040))
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000001c0))
ioctl$UFFDIO_COPY(0xffffffffffffffff, 0xc028aa03, &(0x7f0000000200)={&(0x7f0000ffb000/0x4000)=nil, &(0x7f0000ffc000/0x2000)=nil, 0x4000, 0x2})

19:06:30 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000feffffff010000000c000300000000000000000008000a006e6264000c00020006000000000000000c00020000000000000000008dd50cd7ee5af94c6277d86241989760721d9d3b66c9c6de07b2ceb4385a51baf5fe57450b03ce504bb031db7c9c17839c9d8144d64adcd814f78961528554812ad7b3742111ca9e45811caf31f0b084735af273ec7e4cc994a9c95e7081222279727bcb11c79336320fe3fb81dca0abd38b0958021b4d5159b228d51a47fbaa01114c96c1669a21a6a728f2196cb711a35bf12a1382fc9693b2c3a664934f5455890e10b8d13751cb719e9c6fe9d1eb43a549a35550a9d9"], 0x40}}, 0x0)

19:06:30 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
r3 = syz_open_dev$sg(&(0x7f0000000040), 0xff, 0x20001)
ioctl$SCSI_IOCTL_DOORUNLOCK(r3, 0x5381) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x10, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x40}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x34}}, 0x0)

[ 1581.529043] nbd: couldn't find a device at index 2
19:06:30 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x1c, r2, 0x121, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:31 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1) (async)
r3 = syz_open_dev$sg(&(0x7f0000000040), 0xff, 0x20001)
ioctl$SCSI_IOCTL_DOORUNLOCK(r3, 0x5381) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x10, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x40}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x34}}, 0x0)

[ 1581.558123] nbd: must specify a size in bytes for the device
[ 1581.592726] nbd: must specify a size in bytes for the device
[ 1581.599491] nbd: couldn't find a device at index 2
19:06:31 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
r6 = openat$full(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) (async)
write$P9_RAUTH(r3, &(0x7f0000000100)={0x14, 0x67, 0x2, {0x8, 0x3}}, 0x14) (async)
r7 = openat$zero(0xffffffffffffff9c, &(0x7f00000000c0), 0x400b80, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000300078008000100", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32=r7, @ANYBLOB, @ANYRES32=r5, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB], 0x6c}}, 0x0)

19:06:31 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x14, r2, 0x121}, 0x14}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:31 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r3=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x401}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_BACKEND_IDENTIFIER={0xf, 0xa, '#\'*}-\':#)%#'}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8, 0x1, r3}, {0x8}, {0x8}]}]}, 0x78}}, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(0xffffffffffffffff, 0x8933, 0x0) (async)
ioctl$SOUND_MIXER_INFO(0xffffffffffffffff, 0x805c4d65, &(0x7f0000000040)) (async, rerun: 32)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0) (async, rerun: 32)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000001c0)) (async)
ioctl$UFFDIO_COPY(0xffffffffffffffff, 0xc028aa03, &(0x7f0000000200)={&(0x7f0000ffb000/0x4000)=nil, &(0x7f0000ffc000/0x2000)=nil, 0x4000, 0x2})

19:06:31 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async, rerun: 64)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x74, r2, 0x300, 0x70bd29, 0x25dfdbfd, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7fffffff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xfffffffffffffffd}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x100000001}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xfff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x400}]}, 0x74}, 0x1, 0x0, 0x0, 0x800}, 0x24000040) (rerun: 64)
r3 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000340), 0x400800, 0x0)
ioctl$FBIOPUTCMAP(r3, 0x4605, &(0x7f0000000480)={0x1, 0x4, &(0x7f0000000380)=[0x800, 0x101, 0x3ea, 0x4], &(0x7f00000003c0)=[0x1, 0x4, 0x401, 0x3, 0x81], &(0x7f0000000400)=[0x5], &(0x7f0000000440)=[0x2, 0x101, 0x229a, 0x9, 0x3f, 0x6, 0xffff]})
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000300)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000002c0)={&(0x7f0000000200)={0x20, r2, 0x1, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x20004)

[ 1581.611234] nbd: must specify at least one socket
19:06:31 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r0)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f00000000c0)={&(0x7f0000000000), 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, r3, 0x4, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x24}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x40}, 0x1, 0x0, 0x0, 0x8000}, 0x8c1)

19:06:31 executing program 1:
write$P9_RRENAME(0xffffffffffffffff, &(0x7f0000000000)={0x7, 0x15, 0x2}, 0x7)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
write$P9_RRENAME(0xffffffffffffffff, &(0x7f0000000040)={0x7, 0x15, 0x1000}, 0x7)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:31 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async, rerun: 32)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (rerun: 32)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
r6 = openat$full(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
write$P9_RAUTH(r3, &(0x7f0000000100)={0x14, 0x67, 0x2, {0x8, 0x3}}, 0x14) (async)
r7 = openat$zero(0xffffffffffffff9c, &(0x7f00000000c0), 0x400b80, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000300078008000100", @ANYRES32=r3, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32=r7, @ANYBLOB, @ANYRES32=r5, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB], 0x6c}}, 0x0)

[ 1581.670862] nbd: must specify a size in bytes for the device
[ 1581.686137] nbd: must specify a device to reconfigure
19:06:31 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x14, r2, 0x121}, 0x14}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:31 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async, rerun: 32)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r3=>0xffffffffffffffff}) (rerun: 32)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)={0x78, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x401}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_BACKEND_IDENTIFIER={0xf, 0xa, '#\'*}-\':#)%#'}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8, 0x1, r3}, {0x8}, {0x8}]}]}, 0x78}}, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(0xffffffffffffffff, 0x8933, 0x0)
ioctl$SOUND_MIXER_INFO(0xffffffffffffffff, 0x805c4d65, &(0x7f0000000040))
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000001c0)) (async, rerun: 64)
ioctl$UFFDIO_COPY(0xffffffffffffffff, 0xc028aa03, &(0x7f0000000200)={&(0x7f0000ffb000/0x4000)=nil, &(0x7f0000ffc000/0x2000)=nil, 0x4000, 0x2}) (rerun: 64)

19:06:31 executing program 1:
write$P9_RRENAME(0xffffffffffffffff, &(0x7f0000000000)={0x7, 0x15, 0x2}, 0x7) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
write$P9_RRENAME(0xffffffffffffffff, &(0x7f0000000040)={0x7, 0x15, 0x1000}, 0x7)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:31 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r0)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f00000000c0)={&(0x7f0000000000), 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, r3, 0x4, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x24}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x40}, 0x1, 0x0, 0x0, 0x8000}, 0x8c1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f00000000c0)={&(0x7f0000000000), 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, r3, 0x4, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x24}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x40}, 0x1, 0x0, 0x0, 0x8000}, 0x8c1) (async)

19:06:31 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async, rerun: 32)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x74, r2, 0x300, 0x70bd29, 0x25dfdbfd, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7fffffff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xfffffffffffffffd}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x6}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x100000001}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xfff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x400}]}, 0x74}, 0x1, 0x0, 0x0, 0x800}, 0x24000040) (rerun: 32)
r3 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000340), 0x400800, 0x0)
ioctl$FBIOPUTCMAP(r3, 0x4605, &(0x7f0000000480)={0x1, 0x4, &(0x7f0000000380)=[0x800, 0x101, 0x3ea, 0x4], &(0x7f00000003c0)=[0x1, 0x4, 0x401, 0x3, 0x81], &(0x7f0000000400)=[0x5], &(0x7f0000000440)=[0x2, 0x101, 0x229a, 0x9, 0x3f, 0x6, 0xffff]}) (async)
sendmsg$NBD_CMD_STATUS(r0, &(0x7f0000000300)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000002c0)={&(0x7f0000000200)={0x20, r2, 0x1, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x20004)

[ 1581.712840] nbd: must specify a size in bytes for the device
19:06:31 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff)

19:06:31 executing program 1:
write$P9_RRENAME(0xffffffffffffffff, &(0x7f0000000000)={0x7, 0x15, 0x2}, 0x7)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
write$P9_RRENAME(0xffffffffffffffff, &(0x7f0000000040)={0x7, 0x15, 0x1000}, 0x7) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1581.792388] nbd: must specify a size in bytes for the device
[ 1581.826213] nbd: must specify a device to reconfigure
19:06:31 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x14, r2, 0x121}, 0x14}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:31 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$SNDCTL_FM_LOAD_INSTR(r3, 0x40285107)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
clock_gettime(0x7, &(0x7f0000000200)={<r4=>0x0, <r5=>0x0})
sendmsg$can_bcm(r3, &(0x7f0000000140)={&(0x7f0000000000), 0x10, &(0x7f0000000100)={&(0x7f0000000080)={0x1, 0x100, 0x1ff, {0x0, 0x2710}, {r4, r5/1000+60000}, {0x2, 0x0, 0x0, 0x1}, 0x1, @can={{}, 0x2, 0x3, 0x0, 0x0, "2e64644f86be5414"}}, 0x48}, 0x1, 0x0, 0x0, 0x4}, 0x4000044)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000002c0)=ANY=[@ANYBLOB="c564de7c671a8c4d9318fd4c734dbcef25da073b80ed8f6166c6cf171f7e8c7ced04bb06ffed03f375004f6b239bc0e7598ef0ac8f0e56341a718416c9474dbb66b284713e1bb92d93575818f72f7fb3cb2f3330fb72a55fcc30de7f24dff17bde9d4d0627bdf869e7dc1c18cf9d23754d3d46cb4f42b9c0d72d313f50409a3d10e45db4da861125d3a8595c2d2f4f8d2306fcdd6d70fd9abf8a3c02ffdf747dc11b928b735217f3e5c0bc5fa0ecd14bfdc6e105a5428455ba17e1630e3a69417229d77b8de7", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:31 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f00000000c0)={&(0x7f0000000000), 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, r3, 0x4, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x24}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}]}, 0x40}, 0x1, 0x0, 0x0, 0x8000}, 0x8c1)

19:06:31 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x14, r2, 0x4f2239a192d5d5e8}, 0x14}}, 0x0)

19:06:31 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff)

19:06:31 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="38000000a710eb9743c8ebc3032c6eac7502af", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:31 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x1c, r2, 0x121, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}}, 0x40)

19:06:31 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$SNDCTL_FM_LOAD_INSTR(r3, 0x40285107) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
clock_gettime(0x7, &(0x7f0000000200)={<r4=>0x0, <r5=>0x0})
sendmsg$can_bcm(r3, &(0x7f0000000140)={&(0x7f0000000000), 0x10, &(0x7f0000000100)={&(0x7f0000000080)={0x1, 0x100, 0x1ff, {0x0, 0x2710}, {r4, r5/1000+60000}, {0x2, 0x0, 0x0, 0x1}, 0x1, @can={{}, 0x2, 0x3, 0x0, 0x0, "2e64644f86be5414"}}, 0x48}, 0x1, 0x0, 0x0, 0x4}, 0x4000044) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000002c0)=ANY=[@ANYBLOB="c564de7c671a8c4d9318fd4c734dbcef25da073b80ed8f6166c6cf171f7e8c7ced04bb06ffed03f375004f6b239bc0e7598ef0ac8f0e56341a718416c9474dbb66b284713e1bb92d93575818f72f7fb3cb2f3330fb72a55fcc30de7f24dff17bde9d4d0627bdf869e7dc1c18cf9d23754d3d46cb4f42b9c0d72d313f50409a3d10e45db4da861125d3a8595c2d2f4f8d2306fcdd6d70fd9abf8a3c02ffdf747dc11b928b735217f3e5c0bc5fa0ecd14bfdc6e105a5428455ba17e1630e3a69417229d77b8de7", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

[ 1581.926990] nbd: must specify a device to reconfigure
19:06:31 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:31 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x14, r2, 0x4f2239a192d5d5e8}, 0x14}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x14, r2, 0x4f2239a192d5d5e8}, 0x14}}, 0x0) (async)

19:06:31 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="38000000a710eb9743c8ebc3032c6eac7502af", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:31 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x1c, r2, 0x121, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}}, 0x0)

19:06:31 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$SNDCTL_FM_LOAD_INSTR(r3, 0x40285107)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
clock_gettime(0x7, &(0x7f0000000200)={<r4=>0x0, <r5=>0x0})
sendmsg$can_bcm(r3, &(0x7f0000000140)={&(0x7f0000000000), 0x10, &(0x7f0000000100)={&(0x7f0000000080)={0x1, 0x100, 0x1ff, {0x0, 0x2710}, {r4, r5/1000+60000}, {0x2, 0x0, 0x0, 0x1}, 0x1, @can={{}, 0x2, 0x3, 0x0, 0x0, "2e64644f86be5414"}}, 0x48}, 0x1, 0x0, 0x0, 0x4}, 0x4000044) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000002c0)=ANY=[@ANYBLOB="c564de7c671a8c4d9318fd4c734dbcef25da073b80ed8f6166c6cf171f7e8c7ced04bb06ffed03f375004f6b239bc0e7598ef0ac8f0e56341a718416c9474dbb66b284713e1bb92d93575818f72f7fb3cb2f3330fb72a55fcc30de7f24dff17bde9d4d0627bdf869e7dc1c18cf9d23754d3d46cb4f42b9c0d72d313f50409a3d10e45db4da861125d3a8595c2d2f4f8d2306fcdd6d70fd9abf8a3c02ffdf747dc11b928b735217f3e5c0bc5fa0ecd14bfdc6e105a5428455ba17e1630e3a69417229d77b8de7", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

[ 1582.016399] nbd: couldn't find a device at index 2
19:06:31 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:31 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="38000000a710eb9743c8ebc3032c6eac7502af", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:31 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)={0x14, r2, 0x4f2239a192d5d5e8}, 0x14}}, 0x0)

[ 1582.082326] nbd: couldn't find a device at index 2
19:06:31 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff)

19:06:31 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x121, 0x0, 0x0, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:31 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000007f4ffffff0b00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:31 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f0000000100)={&(0x7f0000000000), 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x60, r2, 0x400, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x200}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xffffffff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x28}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x23}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7fff}]}, 0x60}, 0x1, 0x0, 0x0, 0x40000}, 0xa0d5)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

19:06:31 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:31 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000007f4ffffff0b00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:31 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendto$rose(0xffffffffffffffff, &(0x7f0000000000)="7e779d6d65210b06529f9e852405991db7b115d571049c507b22bac775352d2132919ed45904c2876a1d059277e59c887a72cc35da657a3613da79842d0602700066281caaea2237e46a9c1459e5a3a134bf927b4a0aec20ce55b57c6f3adcce150ff2d86c7d64f826ef84ae2cd28bb281ff537843e07f6eb75fd5b80f50813793", 0x81, 0x4000001, &(0x7f00000000c0)=@full={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, 0x0, [@netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @default, @null, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x0}, @null, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}]}, 0x40)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:31 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7fffffff}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7fffffffffffffff}]}, 0x4c}}, 0x0)

19:06:31 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f00000002c0), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x81)
r4 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x400000, 0x0)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r8 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000340), 0x260143, 0x0)
r9 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000440)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f0000000400)={&(0x7f0000000480)=ANY=[@ANYBLOB="00000000d217d488b0b896d5cce8007f57463aeb250f7cca1024666b5a4b1c9ae05be50a", @ANYRES16=r7, @ANYBLOB="00032bbd7000fddbdf25020000000c00060002000000000000000c00078008000100", @ANYRES32=r8, @ANYBLOB="0c00030005000000000000000c00060000000000000000000800010000000000"], 0x4c}, 0x1, 0x0, 0x0, 0x400}, 0x0)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
sendmsg$BATADV_CMD_GET_ORIGINATORS(r4, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0xc28f3420deb26133}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)=ANY=[@ANYBLOB='\\\x00\x00\x00', @ANYRES16=0x0, @ANYBLOB="c6962bbd7000fbdbdf25080000000500380001000000050037000100000008000600", @ANYRESDEC=r10, @ANYBLOB="08003b006300000008000600", @ANYRES32=0x0, @ANYBLOB="0600280004000000000008002c00a2209bcacff19f3efbc11e87a0563a74cd841009000000000000000000ffff000000"], 0x5c}, 0x1, 0x0, 0x0, 0x8004}, 0x40000)

19:06:31 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f0000000100)={&(0x7f0000000000), 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x60, r2, 0x400, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x200}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xffffffff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x28}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x23}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7fff}]}, 0x60}, 0x1, 0x0, 0x0, 0x40000}, 0xa0d5) (async, rerun: 64)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)

[ 1582.222430] nbd: couldn't find a device at index 2
19:06:31 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendto$rose(0xffffffffffffffff, &(0x7f0000000000)="7e779d6d65210b06529f9e852405991db7b115d571049c507b22bac775352d2132919ed45904c2876a1d059277e59c887a72cc35da657a3613da79842d0602700066281caaea2237e46a9c1459e5a3a134bf927b4a0aec20ce55b57c6f3adcce150ff2d86c7d64f826ef84ae2cd28bb281ff537843e07f6eb75fd5b80f50813793", 0x81, 0x4000001, &(0x7f00000000c0)=@full={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, 0x0, [@netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @default, @null, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x0}, @null, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}]}, 0x40)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:31 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000007f4ffffff0b00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:31 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000007f4ffffff0b00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:31 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7fffffff}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7fffffffffffffff}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7fffffff}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7fffffffffffffff}]}, 0x4c}}, 0x0) (async)

19:06:31 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendto$rose(0xffffffffffffffff, &(0x7f0000000000)="7e779d6d65210b06529f9e852405991db7b115d571049c507b22bac775352d2132919ed45904c2876a1d059277e59c887a72cc35da657a3613da79842d0602700066281caaea2237e46a9c1459e5a3a134bf927b4a0aec20ce55b57c6f3adcce150ff2d86c7d64f826ef84ae2cd28bb281ff537843e07f6eb75fd5b80f50813793", 0x81, 0x4000001, &(0x7f00000000c0)=@full={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, 0x0, [@netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @default, @null, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x0}, @null, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}]}, 0x40) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:31 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000007f4ffffff0b00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

[ 1582.318927] nbd: must specify an index to disconnect
19:06:31 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f00000002c0), r3) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x81)
r4 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x400000, 0x0)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
r8 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000340), 0x260143, 0x0) (async)
r9 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000440)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f0000000400)={&(0x7f0000000480)=ANY=[@ANYBLOB="00000000d217d488b0b896d5cce8007f57463aeb250f7cca1024666b5a4b1c9ae05be50a", @ANYRES16=r7, @ANYBLOB="00032bbd7000fddbdf25020000000c00060002000000000000000c00078008000100", @ANYRES32=r8, @ANYBLOB="0c00030005000000000000000c00060000000000000000000800010000000000"], 0x4c}, 0x1, 0x0, 0x0, 0x400}, 0x0) (async)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
sendmsg$BATADV_CMD_GET_ORIGINATORS(r4, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0xc28f3420deb26133}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)=ANY=[@ANYBLOB='\\\x00\x00\x00', @ANYRES16=0x0, @ANYBLOB="c6962bbd7000fbdbdf25080000000500380001000000050037000100000008000600", @ANYRESDEC=r10, @ANYBLOB="08003b006300000008000600", @ANYRES32=0x0, @ANYBLOB="0600280004000000000008002c00a2209bcacff19f3efbc11e87a0563a74cd841009000000000000000000ffff000000"], 0x5c}, 0x1, 0x0, 0x0, 0x8004}, 0x40000)

19:06:31 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x54, r5, 0x400, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x956f}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x9}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x581a}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}]}, 0x54}, 0x1, 0x0, 0x0, 0x800}, 0x40000)

19:06:31 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7fffffff}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7fffffffffffffff}]}, 0x4c}}, 0x0)

19:06:31 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='N\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:31 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x40, 0x0, 0x800, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xb}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8001}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xefe}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x40}, 0x1, 0x0, 0x0, 0x40002}, 0x0)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1582.446700] nbd: must specify an index to disconnect
[ 1582.468938] nbd: must specify an index to disconnect
19:06:31 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f0000000100)={&(0x7f0000000000), 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x60, r2, 0x400, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x200}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xffffffff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x28}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x23}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7fff}]}, 0x60}, 0x1, 0x0, 0x0, 0x40000}, 0xa0d5)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f0000000100)={&(0x7f0000000000), 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x60, r2, 0x400, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x200}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xffffffff}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x28}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x23}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7fff}]}, 0x60}, 0x1, 0x0, 0x0, 0x40000}, 0xa0d5) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)

19:06:31 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r3, 0x2}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x28, r4, 0x300, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}, 0x1, 0x0, 0x0, 0x20008040}, 0x20000000)

19:06:31 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
socketpair(0x5, 0x5, 0x0, &(0x7f0000000040)={0xffffffffffffffff, <r3=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000080)={0x54, r1, 0x400, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r3}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc}]}, 0x54}}, 0x4000004)

19:06:31 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='N\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='N\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)

19:06:31 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x54, r5, 0x400, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x956f}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x9}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x581a}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}]}, 0x54}, 0x1, 0x0, 0x0, 0x800}, 0x40000)

19:06:31 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f00000002c0), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x81)
r4 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x400000, 0x0)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r8 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000340), 0x260143, 0x0)
r9 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000440)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f0000000400)={&(0x7f0000000480)=ANY=[@ANYBLOB="00000000d217d488b0b896d5cce8007f57463aeb250f7cca1024666b5a4b1c9ae05be50a", @ANYRES16=r7, @ANYBLOB="00032bbd7000fddbdf25020000000c00060002000000000000000c00078008000100", @ANYRES32=r8, @ANYBLOB="0c00030005000000000000000c00060000000000000000000800010000000000"], 0x4c}, 0x1, 0x0, 0x0, 0x400}, 0x0)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
sendmsg$BATADV_CMD_GET_ORIGINATORS(r4, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0xc28f3420deb26133}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)=ANY=[@ANYBLOB='\\\x00\x00\x00', @ANYRES16=0x0, @ANYBLOB="c6962bbd7000fbdbdf25080000000500380001000000050037000100000008000600", @ANYRESDEC=r10, @ANYBLOB="08003b006300000008000600", @ANYRES32=0x0, @ANYBLOB="0600280004000000000008002c00a2209bcacff19f3efbc11e87a0563a74cd841009000000000000000000ffff000000"], 0x5c}, 0x1, 0x0, 0x0, 0x8004}, 0x40000)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f00000002c0), r3) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x81) (async)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x400000, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r6) (async)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
openat$pfkey(0xffffffffffffff9c, &(0x7f0000000340), 0x260143, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000440)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f0000000400)={&(0x7f0000000480)=ANY=[@ANYBLOB="00000000d217d488b0b896d5cce8007f57463aeb250f7cca1024666b5a4b1c9ae05be50a", @ANYRES16=r7, @ANYBLOB="00032bbd7000fddbdf25020000000c00060002000000000000000c00078008000100", @ANYRES32=r8, @ANYBLOB="0c00030005000000000000000c00060000000000000000000800010000000000"], 0x4c}, 0x1, 0x0, 0x0, 0x400}, 0x0) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0) (async)
sendmsg$BATADV_CMD_GET_ORIGINATORS(r4, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0xc28f3420deb26133}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)=ANY=[@ANYBLOB='\\\x00\x00\x00', @ANYRES16=0x0, @ANYBLOB="c6962bbd7000fbdbdf25080000000500380001000000050037000100000008000600", @ANYRESDEC=r10, @ANYBLOB="08003b006300000008000600", @ANYRES32=0x0, @ANYBLOB="0600280004000000000008002c00a2209bcacff19f3efbc11e87a0563a74cd841009000000000000000000ffff000000"], 0x5c}, 0x1, 0x0, 0x0, 0x8004}, 0x40000) (async)

19:06:31 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r3, 0x2}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r3, 0x2}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x28, r4, 0x300, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}, 0x1, 0x0, 0x0, 0x20008040}, 0x20000000)

19:06:32 executing program 4:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x54, r5, 0x400, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x956f}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x9}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x581a}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}]}, 0x54}, 0x1, 0x0, 0x0, 0x800}, 0x40000)

19:06:32 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='N\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000002c0)={&(0x7f0000000200)={0x14, 0x0, 0x8, 0x70bd29, 0x25dfdbff}, 0x14}, 0x1, 0x0, 0x0, 0x20040000}, 0x6301411fd57370b5)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000340)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRESOCT=r2, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x70, r2, 0x1, 0x70bd2a, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xf2f}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x62}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xffffffffffffffc0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x10000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '@'}]}, 0x70}, 0x1, 0x0, 0x0, 0x20000000}, 0x20040004)

[ 1582.553743] nbd: must specify an index to disconnect
[ 1582.571038] nbd: must specify an index to disconnect
19:06:32 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='N\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000002c0)={&(0x7f0000000200)={0x14, 0x0, 0x8, 0x70bd29, 0x25dfdbff}, 0x14}, 0x1, 0x0, 0x0, 0x20040000}, 0x6301411fd57370b5) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000340)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRESOCT=r2, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x70, r2, 0x1, 0x70bd2a, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xf2f}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x62}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xffffffffffffffc0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x10000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '@'}]}, 0x70}, 0x1, 0x0, 0x0, 0x20000000}, 0x20040004)

19:06:32 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r3, 0x2}, 0x14}}, 0x0) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x28, r4, 0x300, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x28}, 0x1, 0x0, 0x0, 0x20008040}, 0x20000000)

19:06:32 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000002c0)={&(0x7f0000000200)={0x14, 0x0, 0x8, 0x70bd29, 0x25dfdbff}, 0x14}, 0x1, 0x0, 0x0, 0x20040000}, 0x6301411fd57370b5)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000340)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRESOCT=r2, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x70, r2, 0x1, 0x70bd2a, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xf2f}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x62}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xffffffffffffffc0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x10000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '@'}]}, 0x70}, 0x1, 0x0, 0x0, 0x20000000}, 0x20040004)

19:06:32 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0xf57cd3f5dcecf0ec}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r5, 0x2, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0xc0}, 0x4000800)

[ 1582.698162] nbd: must specify an index to disconnect
19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000002c0)={&(0x7f0000000200)={0x14, 0x0, 0x8, 0x70bd29, 0x25dfdbff}, 0x14}, 0x1, 0x0, 0x0, 0x20040000}, 0x6301411fd57370b5)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000340)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRESOCT=r2, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x70, r2, 0x1, 0x70bd2a, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xf2f}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x62}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xffffffffffffffc0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x10000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '@'}]}, 0x70}, 0x1, 0x0, 0x0, 0x20000000}, 0x20040004)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000002c0)={&(0x7f0000000200)={0x14, 0x0, 0x8, 0x70bd29, 0x25dfdbff}, 0x14}, 0x1, 0x0, 0x0, 0x20040000}, 0x6301411fd57370b5) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000340)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRESOCT=r2, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x70, r2, 0x1, 0x70bd2a, 0x25dfdbff, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xf2f}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x62}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffff}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0xffffffffffffffc0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x10000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '@'}]}, 0x70}, 0x1, 0x0, 0x0, 0x20000000}, 0x20040004) (async)

19:06:32 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
r4 = openat$pfkey(0xffffffffffffff9c, &(0x7f00000000c0), 0x400, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0x88, r3, 0x20, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x80000000800}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3e}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_BACKEND_IDENTIFIER={0xd, 0xa, '[^{@@(^\\\\'}]}, 0x88}, 0x1, 0x0, 0x0, 0x40000}, 0x8000)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r6)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:32 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r3)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r5)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2)
ioctl$UFFDIO_API(0xffffffffffffffff, 0xc018aa3f, &(0x7f00000000c0)={0xaa, 0x460})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:32 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_open_dev$vcsa(&(0x7f0000000040), 0x5, 0x0)
read$usbmon(r1, &(0x7f0000002100)=""/4104, 0x1008)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010c00030000000000000000001400078008000100"/34, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x20000004}, 0x24040051)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f00000002c0), 0x2001, 0x0)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000600), r0)
sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f00000006c0)={&(0x7f00000005c0)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000780)={&(0x7f0000000640)={0x20, r2, 0x32a, 0x70bd26, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x800}]}, 0x20}, 0x1, 0x0, 0x0, 0xc084}, 0x44841)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000580)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000540)={&(0x7f0000000500)={0x34, r7, 0x4, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x52125d5b1fc3f06e}, 0x4000000)
r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$SNDCTL_MIDI_INFO(r1, 0xc074510c, &(0x7f00000007c0)={"fdda0e9f95f8c789bdc1fa9e15154af89af35038c006ac142e00723413a7", 0x5, 0x1f, 0x80000001, [0x5, 0x8000, 0x1, 0x6, 0x6, 0x7718, 0xea0, 0x5de, 0x463c, 0x101, 0x3, 0x3, 0x9c5, 0x8, 0xffffff9f, 0x28, 0x1, 0xfffffffc]})
r9 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r8)
sendmsg$NBD_CMD_DISCONNECT(r8, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r9, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r10 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000300)='/sys/kernel/debug/binder/transactions\x00', 0x0, 0x0)
write$6lowpan_enable(r10, &(0x7f0000000480)='1', 0x1)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f0000000340)={&(0x7f0000000700)={0x5c, r9, 0x20, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x80000000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x122}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4000050}, 0x68840)

19:06:32 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x0, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:32 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) (async)
r4 = openat$pfkey(0xffffffffffffff9c, &(0x7f00000000c0), 0x400, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0x88, r3, 0x20, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x80000000800}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3e}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_BACKEND_IDENTIFIER={0xd, 0xa, '[^{@@(^\\\\'}]}, 0x88}, 0x1, 0x0, 0x0, 0x40000}, 0x8000) (async)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r6)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c000200000000000000000059a25e813ee6a7996132befd9356554f7eeaa178d5a981413b0ac23631cb77ce14580feb7e935193fd36d2b1dd0efc64483c0eb73f6b5c1273edf3806464dc19"], 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000001c0)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x90000000}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x20, r4, 0x2, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}]}, 0x20}}, 0x0)

[ 1582.803972] nbd: must specify an index to disconnect
19:06:32 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0xf57cd3f5dcecf0ec}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r5, 0x2, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0xc0}, 0x4000800)

19:06:32 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r3)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r5)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2)
ioctl$UFFDIO_API(0xffffffffffffffff, 0xc018aa3f, &(0x7f00000000c0)={0xaa, 0x460})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r3) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r5) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) (async)
ioctl$UFFDIO_API(0xffffffffffffffff, 0xc018aa3f, &(0x7f00000000c0)={0xaa, 0x460}) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

[ 1582.828467] nbd: must specify an index to disconnect
19:06:32 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
r4 = openat$pfkey(0xffffffffffffff9c, &(0x7f00000000c0), 0x400, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0x88, r3, 0x20, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x80000000800}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3e}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_BACKEND_IDENTIFIER={0xd, 0xa, '[^{@@(^\\\\'}]}, 0x88}, 0x1, 0x0, 0x0, 0x40000}, 0x8000)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r6)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:32 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_open_dev$vcsa(&(0x7f0000000040), 0x5, 0x0)
read$usbmon(r1, &(0x7f0000002100)=""/4104, 0x1008) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010c00030000000000000000001400078008000100"/34, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x20000004}, 0x24040051) (async)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f00000002c0), 0x2001, 0x0) (async)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000600), r0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f00000006c0)={&(0x7f00000005c0)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000780)={&(0x7f0000000640)={0x20, r2, 0x32a, 0x70bd26, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x800}]}, 0x20}, 0x1, 0x0, 0x0, 0xc084}, 0x44841) (async)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000580)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000540)={&(0x7f0000000500)={0x34, r7, 0x4, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x52125d5b1fc3f06e}, 0x4000000) (async)
r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
ioctl$SNDCTL_MIDI_INFO(r1, 0xc074510c, &(0x7f00000007c0)={"fdda0e9f95f8c789bdc1fa9e15154af89af35038c006ac142e00723413a7", 0x5, 0x1f, 0x80000001, [0x5, 0x8000, 0x1, 0x6, 0x6, 0x7718, 0xea0, 0x5de, 0x463c, 0x101, 0x3, 0x3, 0x9c5, 0x8, 0xffffff9f, 0x28, 0x1, 0xfffffffc]})
r9 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r8)
sendmsg$NBD_CMD_DISCONNECT(r8, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r9, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r10 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000300)='/sys/kernel/debug/binder/transactions\x00', 0x0, 0x0)
write$6lowpan_enable(r10, &(0x7f0000000480)='1', 0x1)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f0000000340)={&(0x7f0000000700)={0x5c, r9, 0x20, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x80000000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x122}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4000050}, 0x68840)

[ 1582.856689] nbd: must specify an index to disconnect
19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c000200000000000000000059a25e813ee6a7996132befd9356554f7eeaa178d5a981413b0ac23631cb77ce14580feb7e935193fd36d2b1dd0efc64483c0eb73f6b5c1273edf3806464dc19"], 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000001c0)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x90000000}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x20, r4, 0x2, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}]}, 0x20}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c000200000000000000000059a25e813ee6a7996132befd9356554f7eeaa178d5a981413b0ac23631cb77ce14580feb7e935193fd36d2b1dd0efc64483c0eb73f6b5c1273edf3806464dc19"], 0x38}}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1) (async)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000001c0)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x90000000}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x20, r4, 0x2, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}]}, 0x20}}, 0x0) (async)

19:06:32 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff)
r4 = openat$pfkey(0xffffffffffffff9c, &(0x7f00000000c0), 0x400, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0x88, r3, 0x20, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x80000000800}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3e}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_BACKEND_IDENTIFIER={0xd, 0xa, '[^{@@(^\\\\'}]}, 0x88}, 0x1, 0x0, 0x0, 0x40000}, 0x8000)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r6)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), 0xffffffffffffffff) (async)
openat$pfkey(0xffffffffffffff9c, &(0x7f00000000c0), 0x400, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0x88, r3, 0x20, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x80000000800}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3e}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}]}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_BACKEND_IDENTIFIER={0xd, 0xa, '[^{@@(^\\\\'}]}, 0x88}, 0x1, 0x0, 0x0, 0x40000}, 0x8000) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r6) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)

19:06:32 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0xf57cd3f5dcecf0ec}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r5, 0x2, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0xc0}, 0x4000800) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0xf57cd3f5dcecf0ec}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r5, 0x2, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0xc0}, 0x4000800)

[ 1582.901205] nbd: must specify an index to disconnect
19:06:32 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c000200000000000000000059a25e813ee6a7996132befd9356554f7eeaa178d5a981413b0ac23631cb77ce14580feb7e935193fd36d2b1dd0efc64483c0eb73f6b5c1273edf3806464dc19"], 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000001c0)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x90000000}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x20, r4, 0x2, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}]}, 0x20}}, 0x0)

19:06:32 executing program 5:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_open_dev$vcsa(&(0x7f0000000040), 0x5, 0x0)
read$usbmon(r1, &(0x7f0000002100)=""/4104, 0x1008)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010c00030000000000000000001400078008000100"/34, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x20000004}, 0x24040051) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x20000004}, 0x24040051)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f00000002c0), 0x2001, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000600), r0)
sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f00000006c0)={&(0x7f00000005c0)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000780)={&(0x7f0000000640)={0x20, r2, 0x32a, 0x70bd26, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x800}]}, 0x20}, 0x1, 0x0, 0x0, 0xc084}, 0x44841)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000580)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000540)={&(0x7f0000000500)={0x34, r7, 0x4, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x52125d5b1fc3f06e}, 0x4000000) (async)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000580)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000540)={&(0x7f0000000500)={0x34, r7, 0x4, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x52125d5b1fc3f06e}, 0x4000000)
r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$SNDCTL_MIDI_INFO(r1, 0xc074510c, &(0x7f00000007c0)={"fdda0e9f95f8c789bdc1fa9e15154af89af35038c006ac142e00723413a7", 0x5, 0x1f, 0x80000001, [0x5, 0x8000, 0x1, 0x6, 0x6, 0x7718, 0xea0, 0x5de, 0x463c, 0x101, 0x3, 0x3, 0x9c5, 0x8, 0xffffff9f, 0x28, 0x1, 0xfffffffc]})
r9 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r8)
sendmsg$NBD_CMD_DISCONNECT(r8, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r9, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000300)='/sys/kernel/debug/binder/transactions\x00', 0x0, 0x0) (async)
r10 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000300)='/sys/kernel/debug/binder/transactions\x00', 0x0, 0x0)
write$6lowpan_enable(r10, &(0x7f0000000480)='1', 0x1) (async)
write$6lowpan_enable(r10, &(0x7f0000000480)='1', 0x1)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f0000000340)={&(0x7f0000000700)={0x5c, r9, 0x20, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x80000000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x122}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4000050}, 0x68840) (async)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f0000000340)={&(0x7f0000000700)={0x5c, r9, 0x20, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x80000000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x122}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4000050}, 0x68840)

19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c000200000000000000000059a25e813ee6a7996132befd9356554f7eeaa178d5a981413b0ac23631cb77ce14580feb7e935193fd36d2b1dd0efc64483c0eb73f6b5c1273edf3806464dc19"], 0x38}}, 0x0) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000001c0)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x90000000}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x20, r4, 0x2, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}]}, 0x20}}, 0x0)

19:06:32 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_open_dev$vcsa(&(0x7f0000000040), 0x5, 0x0)
read$usbmon(r1, &(0x7f0000002100)=""/4104, 0x1008)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010c00030000000000000000001400078008000100"/34, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x20000004}, 0x24040051)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f00000002c0), 0x2001, 0x0)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000600), r0)
sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f00000006c0)={&(0x7f00000005c0)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000780)={&(0x7f0000000640)={0x20, r2, 0x32a, 0x70bd26, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x800}]}, 0x20}, 0x1, 0x0, 0x0, 0xc084}, 0x44841)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000580)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000540)={&(0x7f0000000500)={0x34, r7, 0x4, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x52125d5b1fc3f06e}, 0x4000000)
r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$SNDCTL_MIDI_INFO(r1, 0xc074510c, &(0x7f00000007c0)={"fdda0e9f95f8c789bdc1fa9e15154af89af35038c006ac142e00723413a7", 0x5, 0x1f, 0x80000001, [0x5, 0x8000, 0x1, 0x6, 0x6, 0x7718, 0xea0, 0x5de, 0x463c, 0x101, 0x3, 0x3, 0x9c5, 0x8, 0xffffff9f, 0x28, 0x1, 0xfffffffc]})
r9 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r8)
sendmsg$NBD_CMD_DISCONNECT(r8, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r9, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r10 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000300)='/sys/kernel/debug/binder/transactions\x00', 0x0, 0x0)
write$6lowpan_enable(r10, &(0x7f0000000480)='1', 0x1)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f0000000340)={&(0x7f0000000700)={0x5c, r9, 0x20, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x80000000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x122}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4000050}, 0x68840)

19:06:32 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r3)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r5)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2)
ioctl$UFFDIO_API(0xffffffffffffffff, 0xc018aa3f, &(0x7f00000000c0)={0xaa, 0x460})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000100), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r3) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r5) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r2) (async)
ioctl$UFFDIO_API(0xffffffffffffffff, 0xc018aa3f, &(0x7f00000000c0)={0xaa, 0x460}) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)

19:06:32 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:32 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000040)=ANY=[@ANYBLOB="140000001039c0ebc9ebe8bc402dce583d687074ba4cc2e21c9cfd568305d8", @ANYRES16=0x0, @ANYBLOB="0000000000000000000002000000"], 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0x0, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x200000000000000}]}, 0x80}, 0x1, 0x0, 0x0, 0x20004000}, 0x0)

19:06:32 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:32 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)

[ 1583.027362] nbd: must specify an index to disconnect
[ 1583.045495] nbd: must specify an index to disconnect
[ 1583.054935] nbd: must specify an index to disconnect
19:06:32 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff)
ioctl$VHOST_VSOCK_SET_RUNNING(0xffffffffffffffff, 0x4004af61, &(0x7f0000000480))
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000440)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x34, r4, 0x100, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7}, @NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '@-'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xa0a}]}, 0x34}, 0x1, 0x0, 0x0, 0x4000}, 0x404b080)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000300)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f00000002c0)={&(0x7f0000000340)=ANY=[@ANYBLOB=',\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="20002abd7000fbdbdf25020000000c00040007000000000000000c3b050006000000000000001e6e5db05beb04"], 0x2c}, 0x1, 0x0, 0x0, 0x10000}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f00000000c0)={&(0x7f0000000000), 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x2c, r2, 0x20, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xa0e830a89312c2b0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x94}]}, 0x2c}, 0x1, 0x0, 0x0, 0x880}, 0x20000000)

[ 1583.100706] nbd: must specify an index to disconnect
19:06:32 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1583.127439] nbd: must specify a size in bytes for the device
19:06:32 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)

19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:32 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000040)=ANY=[@ANYBLOB="140000001039c0ebc9ebe8bc402dce583d687074ba4cc2e21c9cfd568305d8", @ANYRES16=0x0, @ANYBLOB="0000000000000000000002000000"], 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0x0, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x200000000000000}]}, 0x80}, 0x1, 0x0, 0x0, 0x20004000}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0x0, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x200000000000000}]}, 0x80}, 0x1, 0x0, 0x0, 0x20004000}, 0x0)

[ 1583.169254] nbd: must specify an index to disconnect
19:06:32 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000040)=ANY=[@ANYBLOB="140000001039c0ebc9ebe8bc402dce583d687074ba4cc2e21c9cfd568305d8", @ANYRES16=0x0, @ANYBLOB="0000000000000000000002000000"], 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0x0, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x200000000000000}]}, 0x80}, 0x1, 0x0, 0x0, 0x20004000}, 0x0)

19:06:32 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff)
ioctl$VHOST_VSOCK_SET_RUNNING(0xffffffffffffffff, 0x4004af61, &(0x7f0000000480)) (async)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000440)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x34, r4, 0x100, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7}, @NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '@-'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xa0a}]}, 0x34}, 0x1, 0x0, 0x0, 0x4000}, 0x404b080) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000300)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f00000002c0)={&(0x7f0000000340)=ANY=[@ANYBLOB=',\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="20002abd7000fbdbdf25020000000c00040007000000000000000c3b050006000000000000001e6e5db05beb04"], 0x2c}, 0x1, 0x0, 0x0, 0x10000}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f00000000c0)={&(0x7f0000000000), 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x2c, r2, 0x20, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xa0e830a89312c2b0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x94}]}, 0x2c}, 0x1, 0x0, 0x0, 0x880}, 0x20000000)

19:06:32 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRES16=r0, @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000deb2000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000", @ANYRES16=r1, @ANYRESDEC=r0], 0x38}}, 0x0)

19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)

19:06:32 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000040)=ANY=[@ANYBLOB="140000001039c0ebc9ebe8bc402dce583d687074ba4cc2e21c9cfd568305d8", @ANYRES16=0x0, @ANYBLOB="0000000000000000000002000000"], 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0x0, 0x3, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x200000000000000}]}, 0x80}, 0x1, 0x0, 0x0, 0x20004000}, 0x0)

19:06:32 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRES16=r0, @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000deb2000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000", @ANYRES16=r1, @ANYRESDEC=r0], 0x38}}, 0x0)

19:06:32 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff)
ioctl$VHOST_VSOCK_SET_RUNNING(0xffffffffffffffff, 0x4004af61, &(0x7f0000000480)) (async)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000440)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x34, r4, 0x100, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x7}, @NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '@-'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xa0a}]}, 0x34}, 0x1, 0x0, 0x0, 0x4000}, 0x404b080) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000300)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f00000002c0)={&(0x7f0000000340)=ANY=[@ANYBLOB=',\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="20002abd7000fbdbdf25020000000c00040007000000000000000c3b050006000000000000001e6e5db05beb04"], 0x2c}, 0x1, 0x0, 0x0, 0x10000}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f00000000c0)={&(0x7f0000000000), 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x2c, r2, 0x20, 0x70bd2a, 0x25dfdbfd, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xa0e830a89312c2b0}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x94}]}, 0x2c}, 0x1, 0x0, 0x0, 0x880}, 0x20000000) (rerun: 32)

[ 1583.244397] nbd: must specify a size in bytes for the device
[ 1583.269467] nbd: must specify a size in bytes for the device
[ 1583.286474] nbd: must specify a size in bytes for the device
19:06:32 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x9b42}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x38}, 0x1, 0x0, 0x0, 0x10}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r3)

19:06:32 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)

19:06:32 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\x00\x00\t\x00', @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:32 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRES16=r0, @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000deb2000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000", @ANYRES16=r1, @ANYRESDEC=r0], 0x38}}, 0x0)

[ 1583.343014] nbd: must specify a size in bytes for the device
19:06:32 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_open_dev$vcsa(&(0x7f0000000040), 0x5, 0x0)
read$usbmon(r1, &(0x7f0000002100)=""/4104, 0x1008)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010c00030000000000000000001400078008000100"/34, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x20000004}, 0x24040051)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f00000002c0), 0x2001, 0x0)
r6 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r6, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000600), r0)
sendmsg$NBD_CMD_RECONFIGURE(r6, &(0x7f00000006c0)={&(0x7f00000005c0)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000780)={&(0x7f0000000640)={0x20, r2, 0x32a, 0x70bd26, 0x25dfdbfe, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x800}]}, 0x20}, 0x1, 0x0, 0x0, 0xc084}, 0x44841)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r7, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000580)={&(0x7f00000004c0)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000540)={&(0x7f0000000500)={0x34, r7, 0x4, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}]}, 0x34}, 0x1, 0x0, 0x0, 0x52125d5b1fc3f06e}, 0x4000000)
r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$SNDCTL_MIDI_INFO(r1, 0xc074510c, &(0x7f00000007c0)={"fdda0e9f95f8c789bdc1fa9e15154af89af35038c006ac142e00723413a7", 0x5, 0x1f, 0x80000001, [0x5, 0x8000, 0x1, 0x6, 0x6, 0x7718, 0xea0, 0x5de, 0x463c, 0x101, 0x3, 0x3, 0x9c5, 0x8, 0xffffff9f, 0x28, 0x1, 0xfffffffc]})
r9 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r8)
sendmsg$NBD_CMD_DISCONNECT(r8, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r9, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r10 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000300)='/sys/kernel/debug/binder/transactions\x00', 0x0, 0x0)
write$6lowpan_enable(r10, &(0x7f0000000480)='1', 0x1)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f0000000340)={&(0x7f0000000700)={0x5c, r9, 0x20, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x80000000}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x122}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4000050}, 0x68840)

19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x9b42}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x38}, 0x1, 0x0, 0x0, 0x10}, 0x0) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r3)

19:06:32 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01fdff9a1f0b1707c743d6000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:32 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="1400078008000100", @ANYRES32, @ANYBLOB="000001003550e163da838aa186161d54d8", @ANYRES32, @ANYBLOB], 0x40}}, 0x0)

19:06:32 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\x00\x00\t\x00', @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\x00\x00\t\x00', @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)

19:06:32 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600deff9f48f055ffff"], 0x4c}}, 0x0)

19:06:32 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x9b42}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x38}, 0x1, 0x0, 0x0, 0x10}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r3)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x9b42}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x38}, 0x1, 0x0, 0x0, 0x10}, 0x0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r3) (async)

19:06:32 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01fdff9a1f0b1707c743d6000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:32 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="1400078008000100", @ANYRES32, @ANYBLOB="000001003550e163da838aa186161d54d8", @ANYRES32, @ANYBLOB], 0x40}}, 0x0)

19:06:32 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600deff9f48f055ffff"], 0x4c}}, 0x0)

19:06:32 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\x00\x00\t\x00', @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1583.501816] nbd: must specify an index to disconnect
[ 1583.513418] nbd: must specify a size in bytes for the device
[ 1583.538623] nbd: must specify an index to disconnect
19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01fdff9a1f0b1707c743d6000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="080001005a37ace03e67c854e9cf", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x1}, 0x48884)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100c8d1a2a5f36f77cb91e7925d18c2bc34ce40a035fe106c3c0c334858d643f9073088ca7f3419cc6f9b1d8a2d42b56cb6a1ce29a59fd4ccdaeb12106f59c5aca0979850c8bd9055d694f164c6125fff99c3c8ef5661fcb73db3b003a019f74a415c6fd699e15f9fa0ec7b16", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='\x00\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600deff9f48f055ffff"], 0x4c}}, 0x0)

19:06:33 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="1400078008000100", @ANYRES32, @ANYBLOB="000001003550e163da838aa186161d54d8", @ANYRES32, @ANYBLOB], 0x40}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="1400078008000100", @ANYRES32, @ANYBLOB="000001003550e163da838aa186161d54d8", @ANYRES32, @ANYBLOB], 0x40}}, 0x0) (async)

19:06:33 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x1}, 0x48884)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1) (async)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x1}, 0x48884) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)

[ 1583.645860] nbd: must specify a size in bytes for the device
19:06:33 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="080001005a37ace03e67c854e9cf", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100c8d1a2a5f36f77cb91e7925d18c2bc34ce40a035fe106c3c0c334858d643f9073088ca7f3419cc6f9b1d8a2d42b56cb6a1ce29a59fd4ccdaeb12106f59c5aca0979850c8bd9055d694f164c6125fff99c3c8ef5661fcb73db3b003a019f74a415c6fd699e15f9fa0ec7b16", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1583.709416] nbd: must specify a size in bytes for the device
[ 1583.734489] nbd: must specify a size in bytes for the device
[ 1583.745983] nbd: must specify a size in bytes for the device
19:06:33 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000001c0)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x100000}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x44, 0x0, 0x8, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x44}, 0x1, 0x0, 0x0, 0x4000}, 0x30044000)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000810000000c000300000000000000000014000780080001008b33d031e6a19401a33f61da7877405f82c6d8fb8f", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x1}, 0x48884) (async)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x1}, 0x48884)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:33 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
socket$bt_hidp(0x1f, 0x3, 0x6)
r3 = openat$vcsa(0xffffffffffffff9c, &(0x7f0000000000), 0x4001, 0x0)
recvmsg$can_bcm(r3, &(0x7f0000000200)={&(0x7f0000000040)=@nfc_llcp, 0x80, &(0x7f0000001640)=[{&(0x7f00000002c0)=""/215, 0xd7}, {&(0x7f00000000c0)=""/39, 0x27}, {&(0x7f0000000100)=""/2, 0x2}, {&(0x7f00000003c0)=""/201, 0xc9}, {&(0x7f00000004c0)=""/179, 0xb3}, {&(0x7f0000000580)=""/4096, 0x1000}, {&(0x7f0000000140)=""/52, 0x34}, {&(0x7f0000001580)=""/143, 0x8f}], 0x8}, 0x40)

19:06:33 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="080001005a37ace03e67c854e9cf", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="080001005a37ace03e67c854e9cf", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)

19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100c8d1a2a5f36f77cb91e7925d18c2bc34ce40a035fe106c3c0c334858d643f9073088ca7f3419cc6f9b1d8a2d42b56cb6a1ce29a59fd4ccdaeb12106f59c5aca0979850c8bd9055d694f164c6125fff99c3c8ef5661fcb73db3b003a019f74a415c6fd699e15f9fa0ec7b16", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100c8d1a2a5f36f77cb91e7925d18c2bc34ce40a035fe106c3c0c334858d643f9073088ca7f3419cc6f9b1d8a2d42b56cb6a1ce29a59fd4ccdaeb12106f59c5aca0979850c8bd9055d694f164c6125fff99c3c8ef5661fcb73db3b003a019f74a415c6fd699e15f9fa0ec7b16", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)

[ 1583.782268] nbd: must specify a size in bytes for the device
[ 1583.810017] nbd: must specify a size in bytes for the device
19:06:33 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000001c0)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x100000}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x44, 0x0, 0x8, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x44}, 0x1, 0x0, 0x0, 0x4000}, 0x30044000) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000001c0)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x100000}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x44, 0x0, 0x8, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x44}, 0x1, 0x0, 0x0, 0x4000}, 0x30044000)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000810000000c000300000000000000000014000780080001008b33d031e6a19401a33f61da7877405f82c6d8fb8f", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="387969f3b192b90414935eea0ea18999000000c2d299558bbb110a36931cc5e3a8d51f0a16c19f70f064d6372939909ea8bc6645275fece2d5739e930c3da85238ac723a8701f6fe3cbd51", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
socket$bt_hidp(0x1f, 0x3, 0x6)
r3 = openat$vcsa(0xffffffffffffff9c, &(0x7f0000000000), 0x4001, 0x0)
recvmsg$can_bcm(r3, &(0x7f0000000200)={&(0x7f0000000040)=@nfc_llcp, 0x80, &(0x7f0000001640)=[{&(0x7f00000002c0)=""/215, 0xd7}, {&(0x7f00000000c0)=""/39, 0x27}, {&(0x7f0000000100)=""/2, 0x2}, {&(0x7f00000003c0)=""/201, 0xc9}, {&(0x7f00000004c0)=""/179, 0xb3}, {&(0x7f0000000580)=""/4096, 0x1000}, {&(0x7f0000000140)=""/52, 0x34}, {&(0x7f0000001580)=""/143, 0x8f}], 0x8}, 0x40)

19:06:33 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000001c0)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x100000}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x44, 0x0, 0x8, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x44}, 0x1, 0x0, 0x0, 0x4000}, 0x30044000) (async, rerun: 32)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 32)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000810000000c000300000000000000000014000780080001008b33d031e6a19401a33f61da7877405f82c6d8fb8f", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1583.905151] nbd: must specify a size in bytes for the device
[ 1583.925026] nbd: must specify a size in bytes for the device
[ 1583.941049] nbd: must specify a size in bytes for the device
19:06:33 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:33 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="387969f3b192b90414935eea0ea18999000000c2d299558bbb110a36931cc5e3a8d51f0a16c19f70f064d6372939909ea8bc6645275fece2d5739e930c3da85238ac723a8701f6fe3cbd51", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:33 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
socket$bt_hidp(0x1f, 0x3, 0x6)
r3 = openat$vcsa(0xffffffffffffff9c, &(0x7f0000000000), 0x4001, 0x0)
recvmsg$can_bcm(r3, &(0x7f0000000200)={&(0x7f0000000040)=@nfc_llcp, 0x80, &(0x7f0000001640)=[{&(0x7f00000002c0)=""/215, 0xd7}, {&(0x7f00000000c0)=""/39, 0x27}, {&(0x7f0000000100)=""/2, 0x2}, {&(0x7f00000003c0)=""/201, 0xc9}, {&(0x7f00000004c0)=""/179, 0xb3}, {&(0x7f0000000580)=""/4096, 0x1000}, {&(0x7f0000000140)=""/52, 0x34}, {&(0x7f0000001580)=""/143, 0x8f}], 0x8}, 0x40)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
socket$bt_hidp(0x1f, 0x3, 0x6) (async)
openat$vcsa(0xffffffffffffff9c, &(0x7f0000000000), 0x4001, 0x0) (async)
recvmsg$can_bcm(r3, &(0x7f0000000200)={&(0x7f0000000040)=@nfc_llcp, 0x80, &(0x7f0000001640)=[{&(0x7f00000002c0)=""/215, 0xd7}, {&(0x7f00000000c0)=""/39, 0x27}, {&(0x7f0000000100)=""/2, 0x2}, {&(0x7f00000003c0)=""/201, 0xc9}, {&(0x7f00000004c0)=""/179, 0xb3}, {&(0x7f0000000580)=""/4096, 0x1000}, {&(0x7f0000000140)=""/52, 0x34}, {&(0x7f0000001580)=""/143, 0x8f}], 0x8}, 0x40) (async)

[ 1583.965374] nbd: must specify a size in bytes for the device
19:06:33 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
fremovexattr(r4, &(0x7f00000000c0)=@random={'os2.', '%%\\+]$\x00'})
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sysvipc/shm\x00', 0x0, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)=ANY=[@ANYBLOB='d\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000040007803400078008000100", @ANYRES32=r3, @ANYBLOB="a1908b5b", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32=r5, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB="08000100", @ANYRES32=r7, @ANYBLOB="0c0002000000000000000000"], 0x64}}, 0x0)
ioctl$sock_bt_hidp_HIDPGETCONNINFO(r6, 0x800448d3, &(0x7f00000002c0)={@none, 0x31e3, 0xff, 0x2, 0x81, 0x8be, "a68ccc168f3b638604c4ed483726f234fae470b406e6d4ec2c8cb266b14f8d1f5d7ef4bcf797a57665731939ca4e54ad32d285dc33cd10c8f458cce3ac7e3056cbdc476cb91773338c8f2da373bf2802889c423ee53071f9e88858187ba77609c5f17b6b28fd04eca34743a90aab3aba56b41218c4dd3bbbd2c8c46dbb578c8c"})
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f00000001c0), 0xc0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$sock_bt_hidp_HIDPCONNDEL(r8, 0x400448c9, &(0x7f0000000040)={@fixed={'\xaa\xaa\xaa\xaa\xaa', 0x11}, 0xb03})

19:06:33 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:33 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="387969f3b192b90414935eea0ea18999000000c2d299558bbb110a36931cc5e3a8d51f0a16c19f70f064d6372939909ea8bc6645275fece2d5739e930c3da85238ac723a8701f6fe3cbd51", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:33 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
fremovexattr(r4, &(0x7f00000000c0)=@random={'os2.', '%%\\+]$\x00'})
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sysvipc/shm\x00', 0x0, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)=ANY=[@ANYBLOB='d\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000040007803400078008000100", @ANYRES32=r3, @ANYBLOB="a1908b5b", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32=r5, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB="08000100", @ANYRES32=r7, @ANYBLOB="0c0002000000000000000000"], 0x64}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)=ANY=[@ANYBLOB='d\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000040007803400078008000100", @ANYRES32=r3, @ANYBLOB="a1908b5b", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32=r5, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB="08000100", @ANYRES32=r7, @ANYBLOB="0c0002000000000000000000"], 0x64}}, 0x0)
ioctl$sock_bt_hidp_HIDPGETCONNINFO(r6, 0x800448d3, &(0x7f00000002c0)={@none, 0x31e3, 0xff, 0x2, 0x81, 0x8be, "a68ccc168f3b638604c4ed483726f234fae470b406e6d4ec2c8cb266b14f8d1f5d7ef4bcf797a57665731939ca4e54ad32d285dc33cd10c8f458cce3ac7e3056cbdc476cb91773338c8f2da373bf2802889c423ee53071f9e88858187ba77609c5f17b6b28fd04eca34743a90aab3aba56b41218c4dd3bbbd2c8c46dbb578c8c"}) (async)
ioctl$sock_bt_hidp_HIDPGETCONNINFO(r6, 0x800448d3, &(0x7f00000002c0)={@none, 0x31e3, 0xff, 0x2, 0x81, 0x8be, "a68ccc168f3b638604c4ed483726f234fae470b406e6d4ec2c8cb266b14f8d1f5d7ef4bcf797a57665731939ca4e54ad32d285dc33cd10c8f458cce3ac7e3056cbdc476cb91773338c8f2da373bf2802889c423ee53071f9e88858187ba77609c5f17b6b28fd04eca34743a90aab3aba56b41218c4dd3bbbd2c8c46dbb578c8c"})
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f00000001c0), 0xc0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$sock_bt_hidp_HIDPCONNDEL(r8, 0x400448c9, &(0x7f0000000040)={@fixed={'\xaa\xaa\xaa\xaa\xaa', 0x11}, 0xb03})

19:06:33 executing program 4:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000000c0)={&(0x7f0000000380)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=0x0, @ANYBLOB="00012abd7000ffdbdf05050000000c00030004000000000000000c000800ff0f0000000000000c000400000000000000008004000a0021c9b592663c92d4d7b2cd50206c623d847c311219cd1776d301840b109d33ffca3e2411f07c781adc496713f1733136fdb81c09db1ce5f942c895c5c4dee356044269ece74a8146c922648fdc61d9058c3a6f3727"], 0x3c}, 0x1, 0x0, 0x0, 0x4008800}, 0x4)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r1)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000340)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000300)={&(0x7f00000002c0)={0x38, r2, 0x2, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1f}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6}]}, 0x38}, 0x1, 0x0, 0x0, 0x8004}, 0xc001)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
write$vga_arbiter(r3, &(0x7f00000001c0)=@other={'trylock', ' ', 'none'}, 0xd)

19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 5:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:33 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:33 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
fremovexattr(r4, &(0x7f00000000c0)=@random={'os2.', '%%\\+]$\x00'})
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0) (async)
r7 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000000)='/proc/sysvipc/shm\x00', 0x0, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000100)=ANY=[@ANYBLOB='d\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000040007803400078008000100", @ANYRES32=r3, @ANYBLOB="a1908b5b", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="08000100", @ANYRES32=r5, @ANYBLOB="08000100", @ANYRES32=r6, @ANYBLOB="08000100", @ANYRES32=r7, @ANYBLOB="0c0002000000000000000000"], 0x64}}, 0x0) (async)
ioctl$sock_bt_hidp_HIDPGETCONNINFO(r6, 0x800448d3, &(0x7f00000002c0)={@none, 0x31e3, 0xff, 0x2, 0x81, 0x8be, "a68ccc168f3b638604c4ed483726f234fae470b406e6d4ec2c8cb266b14f8d1f5d7ef4bcf797a57665731939ca4e54ad32d285dc33cd10c8f458cce3ac7e3056cbdc476cb91773338c8f2da373bf2802889c423ee53071f9e88858187ba77609c5f17b6b28fd04eca34743a90aab3aba56b41218c4dd3bbbd2c8c46dbb578c8c"}) (async)
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f00000001c0), 0xc0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$sock_bt_hidp_HIDPCONNDEL(r8, 0x400448c9, &(0x7f0000000040)={@fixed={'\xaa\xaa\xaa\xaa\xaa', 0x11}, 0xb03})

19:06:33 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000001c0)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x100000}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x44, 0x0, 0x8, 0x70bd25, 0x25dfdbfc, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x44}, 0x1, 0x0, 0x0, 0x4000}, 0x30044000)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000810000000c000300000000000000000014000780080001008b33d031e6a19401a33f61da7877405f82c6d8fb8f", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000003c0)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000380)={&(0x7f0000000340)={0x34, r2, 0x800, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '#:'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x34}, 0x1, 0x0, 0x0, 0x844}, 0x800)
r8 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000080), 0x1, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000300)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000002c0)={&(0x7f00000000c0)={0xc0, r2, 0x100, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x7}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}, {0x8}, {0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x19a}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0x3c, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}, {0x8}, {0x8, 0x1, r6}, {0x8}, {0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}]}]}, 0xc0}, 0x1, 0x0, 0x0, 0x80}, 0x8804)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000006b00140007800800010000000000001a000000000000000000", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 4:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000000c0)={&(0x7f0000000380)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=0x0, @ANYBLOB="00012abd7000ffdbdf05050000000c00030004000000000000000c000800ff0f0000000000000c000400000000000000008004000a0021c9b592663c92d4d7b2cd50206c623d847c311219cd1776d301840b109d33ffca3e2411f07c781adc496713f1733136fdb81c09db1ce5f942c895c5c4dee356044269ece74a8146c922648fdc61d9058c3a6f3727"], 0x3c}, 0x1, 0x0, 0x0, 0x4008800}, 0x4) (async)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) (async, rerun: 32)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r1) (rerun: 32)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000340)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000300)={&(0x7f00000002c0)={0x38, r2, 0x2, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1f}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6}]}, 0x38}, 0x1, 0x0, 0x0, 0x8004}, 0xc001)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0) (async, rerun: 32)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) (rerun: 32)
write$vga_arbiter(r3, &(0x7f00000001c0)=@other={'trylock', ' ', 'none'}, 0xd)

19:06:33 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000580), r1)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000640)={&(0x7f0000000540)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x14, r7, 0x400, 0x70bd25, 0x25dfdbfe}, 0x14}, 0x1, 0x0, 0x0, 0x4000040}, 0x20000080)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async, rerun: 64)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (rerun: 64)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0) (async, rerun: 32)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000003c0)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000380)={&(0x7f0000000340)={0x34, r2, 0x800, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '#:'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x34}, 0x1, 0x0, 0x0, 0x844}, 0x800) (async, rerun: 32)
r8 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000080), 0x1, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000300)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000002c0)={&(0x7f00000000c0)={0xc0, r2, 0x100, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x7}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}, {0x8}, {0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x19a}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0x3c, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}, {0x8}, {0x8, 0x1, r6}, {0x8}, {0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}]}]}, 0xc0}, 0x1, 0x0, 0x0, 0x80}, 0x8804) (async, rerun: 32)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000006b00140007800800010000000000001a000000000000000000", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (rerun: 32)

19:06:33 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$BATADV_CMD_GET_ORIGINATORS(0xffffffffffffffff, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x50, 0x0, 0x401, 0x70bd29, 0x80, {}, [@BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED={0x5, 0x2e, 0x1}, @BATADV_ATTR_AGGREGATED_OGMS_ENABLED={0x5}, @BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED={0x5, 0x2e, 0x1}, @BATADV_ATTR_GW_BANDWIDTH_UP={0x8, 0x32, 0x3}, @BATADV_ATTR_ORIG_ADDRESS={0xa, 0x9, @remote}, @BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED={0x5}, @BATADV_ATTR_ORIG_INTERVAL={0x8, 0x39, 0x6}]}, 0x50}, 0x1, 0x0, 0x0, 0x2404c8c0}, 0x4000804)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x50, r4, 0x400, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8}]}, 0x50}, 0x1, 0x0, 0x0, 0x20040800}, 0x4000)

19:06:33 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="080001005a37ace03e67c854e9cf", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1584.316138] nbd: must specify an index to disconnect
19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 4:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000000c0)={&(0x7f0000000380)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=0x0, @ANYBLOB="00012abd7000ffdbdf05050000000c00030004000000000000000c000800ff0f0000000000000c000400000000000000008004000a0021c9b592663c92d4d7b2cd50206c623d847c311219cd1776d301840b109d33ffca3e2411f07c781adc496713f1733136fdb81c09db1ce5f942c895c5c4dee356044269ece74a8146c922648fdc61d9058c3a6f3727"], 0x3c}, 0x1, 0x0, 0x0, 0x4008800}, 0x4)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r1)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000340)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000300)={&(0x7f00000002c0)={0x38, r2, 0x2, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1f}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6}]}, 0x38}, 0x1, 0x0, 0x0, 0x8004}, 0xc001)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
write$vga_arbiter(r3, &(0x7f00000001c0)=@other={'trylock', ' ', 'none'}, 0xd)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000000c0)={&(0x7f0000000380)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=0x0, @ANYBLOB="00012abd7000ffdbdf05050000000c00030004000000000000000c000800ff0f0000000000000c000400000000000000008004000a0021c9b592663c92d4d7b2cd50206c623d847c311219cd1776d301840b109d33ffca3e2411f07c781adc496713f1733136fdb81c09db1ce5f942c895c5c4dee356044269ece74a8146c922648fdc61d9058c3a6f3727"], 0x3c}, 0x1, 0x0, 0x0, 0x4008800}, 0x4) (async)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r1) (async)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000340)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x8000}, 0xc, &(0x7f0000000300)={&(0x7f00000002c0)={0x38, r2, 0x2, 0x70bd2d, 0x25dfdbfd, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1f}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6}]}, 0x38}, 0x1, 0x0, 0x0, 0x8004}, 0xc001) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) (async)
write$vga_arbiter(r3, &(0x7f00000001c0)=@other={'trylock', ' ', 'none'}, 0xd) (async)

19:06:33 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x200, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x1}, 0x48884)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1584.342110] nbd: must specify a size in bytes for the device
19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0) (async)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000003c0)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f0000000380)={&(0x7f0000000340)={0x34, r2, 0x800, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '#:'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_CLIENT_FLAGS={0xc}]}, 0x34}, 0x1, 0x0, 0x0, 0x844}, 0x800) (async)
r8 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000080), 0x1, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000300)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100}, 0xc, &(0x7f00000002c0)={&(0x7f00000000c0)={0xc0, r2, 0x100, 0x70bd2b, 0x25dfdbfc, {}, [@NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x7}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8, 0x1, r4}, {0x8}, {0x8}, {0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x19a}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0x3c, 0x7, 0x0, 0x1, [{0x8, 0x1, r5}, {0x8}, {0x8, 0x1, r6}, {0x8}, {0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}]}]}, 0xc0}, 0x1, 0x0, 0x0, 0x80}, 0x8804)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000006b00140007800800010000000000001a000000000000000000", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1584.395111] nbd: must specify an index to disconnect
19:06:33 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3) (async)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000) (async)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000) (async)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3) (async)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000580), r1)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000640)={&(0x7f0000000540)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x14, r7, 0x400, 0x70bd25, 0x25dfdbfe}, 0x14}, 0x1, 0x0, 0x0, 0x4000040}, 0x20000080)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:33 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3) (async)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$BATADV_CMD_GET_ORIGINATORS(0xffffffffffffffff, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x50, 0x0, 0x401, 0x70bd29, 0x80, {}, [@BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED={0x5, 0x2e, 0x1}, @BATADV_ATTR_AGGREGATED_OGMS_ENABLED={0x5}, @BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED={0x5, 0x2e, 0x1}, @BATADV_ATTR_GW_BANDWIDTH_UP={0x8, 0x32, 0x3}, @BATADV_ATTR_ORIG_ADDRESS={0xa, 0x9, @remote}, @BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED={0x5}, @BATADV_ATTR_ORIG_INTERVAL={0x8, 0x39, 0x6}]}, 0x50}, 0x1, 0x0, 0x0, 0x2404c8c0}, 0x4000804)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x50, r4, 0x400, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8}]}, 0x50}, 0x1, 0x0, 0x0, 0x20040800}, 0x4000)

19:06:33 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_open_dev$vcsa(&(0x7f0000000000), 0xfff, 0x24000)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r4 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000040), 0x4000, 0x0)
epoll_ctl$EPOLL_CTL_MOD(r4, 0x3, r1, &(0x7f0000000080))

19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 1:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$BATADV_CMD_GET_ORIGINATORS(0xffffffffffffffff, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x50, 0x0, 0x401, 0x70bd29, 0x80, {}, [@BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED={0x5, 0x2e, 0x1}, @BATADV_ATTR_AGGREGATED_OGMS_ENABLED={0x5}, @BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED={0x5, 0x2e, 0x1}, @BATADV_ATTR_GW_BANDWIDTH_UP={0x8, 0x32, 0x3}, @BATADV_ATTR_ORIG_ADDRESS={0xa, 0x9, @remote}, @BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED={0x5}, @BATADV_ATTR_ORIG_INTERVAL={0x8, 0x39, 0x6}]}, 0x50}, 0x1, 0x0, 0x0, 0x2404c8c0}, 0x4000804)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x50, r4, 0x400, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8}]}, 0x50}, 0x1, 0x0, 0x0, 0x20040800}, 0x4000)

19:06:33 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002007b0420ec00000000"], 0x4c}}, 0x0)

19:06:33 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_open_dev$vcsa(&(0x7f0000000000), 0xfff, 0x24000)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r4 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000040), 0x4000, 0x0)
epoll_ctl$EPOLL_CTL_MOD(r4, 0x3, r1, &(0x7f0000000080))

19:06:33 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3) (async)
sendmsg$BATADV_CMD_GET_ORIGINATORS(0xffffffffffffffff, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x50, 0x0, 0x401, 0x70bd29, 0x80, {}, [@BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED={0x5, 0x2e, 0x1}, @BATADV_ATTR_AGGREGATED_OGMS_ENABLED={0x5}, @BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED={0x5, 0x2e, 0x1}, @BATADV_ATTR_GW_BANDWIDTH_UP={0x8, 0x32, 0x3}, @BATADV_ATTR_ORIG_ADDRESS={0xa, 0x9, @remote}, @BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED={0x5}, @BATADV_ATTR_ORIG_INTERVAL={0x8, 0x39, 0x6}]}, 0x50}, 0x1, 0x0, 0x0, 0x2404c8c0}, 0x4000804)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x50, r4, 0x400, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8}]}, 0x50}, 0x1, 0x0, 0x0, 0x20040800}, 0x4000)

[ 1584.491321] nbd: must specify an index to disconnect
[ 1584.504354] nbd: must specify an index to disconnect
[ 1584.522464] nbd: must specify an index to disconnect
19:06:33 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:33 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880) (async)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000) (async)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000580), r1)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000640)={&(0x7f0000000540)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x14, r7, 0x400, 0x70bd25, 0x25dfdbfe}, 0x14}, 0x1, 0x0, 0x0, 0x4000040}, 0x20000080)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:33 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_open_dev$vcsa(&(0x7f0000000000), 0xfff, 0x24000)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r4 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000040), 0x4000, 0x0)
epoll_ctl$EPOLL_CTL_MOD(r4, 0x3, r1, &(0x7f0000000080))

[ 1584.540675] nbd: must specify an index to disconnect
19:06:34 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002007b0420ec00000000"], 0x4c}}, 0x0)

19:06:34 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_open_dev$vcsa(&(0x7f0000000000), 0xfff, 0x24000) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
r4 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000040), 0x4000, 0x0)
epoll_ctl$EPOLL_CTL_MOD(r4, 0x3, r1, &(0x7f0000000080))

19:06:34 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRESOCT=r0, @ANYRES16=r2, @ANYBLOB="01000000000000000000010c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002007b0420ec00000000"], 0x4c}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002007b0420ec00000000"], 0x4c}}, 0x0)

[ 1584.604211] nbd: must specify an index to disconnect
19:06:34 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000000c0)=ANY=[], 0x38}, 0x1, 0x0, 0x0, 0x8732751ebf0ecee2}, 0x40800)

[ 1584.655944] nbd: must specify an index to disconnect
19:06:34 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3) (async, rerun: 32)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRESOCT=r0, @ANYRES16=r2, @ANYBLOB="01000000000000000000010c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (rerun: 32)

19:06:34 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYRES8=r1, @ANYRES8=r2, @ANYRES32=r1, @ANYRES32=r0, @ANYBLOB="e2f50100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x4c085)

19:06:34 executing program 1:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$BATADV_CMD_GET_ORIGINATORS(0xffffffffffffffff, &(0x7f0000000380)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x50, 0x0, 0x401, 0x70bd29, 0x80, {}, [@BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED={0x5, 0x2e, 0x1}, @BATADV_ATTR_AGGREGATED_OGMS_ENABLED={0x5}, @BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED={0x5, 0x2e, 0x1}, @BATADV_ATTR_GW_BANDWIDTH_UP={0x8, 0x32, 0x3}, @BATADV_ATTR_ORIG_ADDRESS={0xa, 0x9, @remote}, @BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED={0x5}, @BATADV_ATTR_ORIG_INTERVAL={0x8, 0x39, 0x6}]}, 0x50}, 0x1, 0x0, 0x0, 0x2404c8c0}, 0x4000804)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x50, r4, 0x400, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x8}]}, 0x50}, 0x1, 0x0, 0x0, 0x20040800}, 0x4000)

19:06:34 executing program 3:
r0 = openat$zero(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$SNDCTL_TMR_START(r0, 0x5402)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x10000)

19:06:34 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYRES8=r1, @ANYRES8=r2, @ANYRES32=r1, @ANYRES32=r0, @ANYBLOB="e2f50100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x4c085)

19:06:34 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000000c0)=ANY=[], 0x38}, 0x1, 0x0, 0x0, 0x8732751ebf0ecee2}, 0x40800)

19:06:34 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRESOCT=r0, @ANYRES16=r2, @ANYBLOB="01000000000000000000010c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 3:
r0 = openat$zero(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$SNDCTL_TMR_START(r0, 0x5402)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x10000)

19:06:34 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000000c0)=ANY=[], 0x38}, 0x1, 0x0, 0x0, 0x8732751ebf0ecee2}, 0x40800)

19:06:34 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async, rerun: 32)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (rerun: 32)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYRES8=r1, @ANYRES8=r2, @ANYRES32=r1, @ANYRES32=r0, @ANYBLOB="e2f50100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x4c085)

[ 1584.810763] nbd: must specify an index to disconnect
19:06:34 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000580), r1)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000640)={&(0x7f0000000540)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x14, r7, 0x400, 0x70bd25, 0x25dfdbfe}, 0x14}, 0x1, 0x0, 0x0, 0x4000040}, 0x20000080)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:34 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f002100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000040)='/proc/zoneinfo\x00', 0x0, 0x0)
r5 = syz_open_dev$vcsa(&(0x7f00000002c0), 0x3, 0x448842)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x68, 0x0, 0x400, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}, {0x8}, {0x8, 0x1, r4}, {0x8, 0x1, r5}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x400}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x68}, 0x1, 0x0, 0x0, 0xc040}, 0x8000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:34 executing program 3:
r0 = openat$zero(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$SNDCTL_TMR_START(r0, 0x5402)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x10000)

19:06:34 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000001c0)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x38, 0x0, 0x100, 0x70bd2c, 0x25dfdbfb, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8f9}]}, 0x38}, 0x1, 0x0, 0x0, 0xc040}, 0x4008050)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000002c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r0, @ANYBLOB="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"], 0x4c}}, 0x0)
r4 = socket$nl_generic(0x10, 0x3, 0x10)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, &(0x7f0000000000))
socketpair(0x25, 0x4, 0x1, &(0x7f0000000080))

19:06:34 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f002100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000040)='/proc/zoneinfo\x00', 0x0, 0x0) (async)
r5 = syz_open_dev$vcsa(&(0x7f00000002c0), 0x3, 0x448842)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x68, 0x0, 0x400, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}, {0x8}, {0x8, 0x1, r4}, {0x8, 0x1, r5}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x400}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x68}, 0x1, 0x0, 0x0, 0xc040}, 0x8000) (async)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1584.930741] nbd: must specify an index to disconnect
19:06:34 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000580), r1)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000640)={&(0x7f0000000540)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x14, r7, 0x400, 0x70bd25, 0x25dfdbfe}, 0x14}, 0x1, 0x0, 0x0, 0x4000040}, 0x20000080)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:34 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000001c0)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x38, 0x0, 0x100, 0x70bd2c, 0x25dfdbfb, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8f9}]}, 0x38}, 0x1, 0x0, 0x0, 0xc040}, 0x4008050) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0) (async, rerun: 64)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2) (rerun: 64)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000002c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r0, @ANYBLOB="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"], 0x4c}}, 0x0) (async, rerun: 64)
r4 = socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, &(0x7f0000000000))
socketpair(0x25, 0x4, 0x1, &(0x7f0000000080))

19:06:34 executing program 3:
r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x489c2, 0x0)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000400)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f00000003c0)={&(0x7f0000000340)={0x70, r6, 0x10, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000000000000001}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffffffffffff}]}, 0x70}, 0x1, 0x0, 0x0, 0x81}, 0x88000)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={<r7=>0xffffffffffffffff})
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000002c0)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x40040004}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x54, 0x0, 0x0, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r0}, {0x8, 0x1, r0}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5d1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r0}]}]}, 0x54}, 0x1, 0x0, 0x0, 0x40090}, 0x22008811)
ioctl$SNDCTL_TMR_SELECT(r0, 0x40045408)
r8 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r8, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:34 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000040)='/proc/zoneinfo\x00', 0x0, 0x0)
r5 = syz_open_dev$vcsa(&(0x7f00000002c0), 0x3, 0x448842)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x68, 0x0, 0x400, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}, {0x8}, {0x8, 0x1, r4}, {0x8, 0x1, r5}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x400}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x68}, 0x1, 0x0, 0x0, 0xc040}, 0x8000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
openat$procfs(0xffffffffffffff9c, &(0x7f0000000040)='/proc/zoneinfo\x00', 0x0, 0x0) (async)
syz_open_dev$vcsa(&(0x7f00000002c0), 0x3, 0x448842) (async)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x68, 0x0, 0x400, 0x70bd27, 0x25dfdbff, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8}, {0x8}, {0x8, 0x1, r4}, {0x8, 0x1, r5}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x400}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x68}, 0x1, 0x0, 0x0, 0xc040}, 0x8000) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)

19:06:34 executing program 2:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:34 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="0f002100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

[ 1585.084803] nbd: must specify an index to disconnect
[ 1585.128357] nbd: must specify an index to disconnect
19:06:34 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000580), r1)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000640)={&(0x7f0000000540)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x14, r7, 0x400, 0x70bd25, 0x25dfdbfe}, 0x14}, 0x1, 0x0, 0x0, 0x4000040}, 0x20000080)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:34 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:34 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYRESOCT=r2, @ANYRES8=0x0, @ANYRES32=r0, @ANYRES8=r4], 0x38}, 0x1, 0x0, 0x0, 0x4011}, 0x4080)

19:06:34 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:34 executing program 3:
r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x489c2, 0x0) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000400)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f00000003c0)={&(0x7f0000000340)={0x70, r6, 0x10, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000000000000001}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffffffffffff}]}, 0x70}, 0x1, 0x0, 0x0, 0x81}, 0x88000)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={<r7=>0xffffffffffffffff})
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000002c0)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x40040004}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x54, 0x0, 0x0, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r0}, {0x8, 0x1, r0}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5d1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r0}]}]}, 0x54}, 0x1, 0x0, 0x0, 0x40090}, 0x22008811) (async)
ioctl$SNDCTL_TMR_SELECT(r0, 0x40045408) (async)
r8 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r8, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:34 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
add_key(&(0x7f0000000580)='.dead\x00', &(0x7f00000005c0)={'syz', 0x2}, &(0x7f0000000600)="a46887ba98aa0f60bae4ce205017c560070a761b4d0f404436c92c8634ce6f9e7fe5123f5f59008cdade935a2db9d08477b722a1ee958ea2114dc6e62508", 0x3e, 0xfffffffffffffffb)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000040)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r2=>0xffffffffffffffff}}, './file0\x00'})
openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000080), 0x111000, 0x0)
r3 = openat$nvram(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)
read$usbmon(0xffffffffffffffff, &(0x7f0000000740)=""/185, 0xb9)
r4 = openat$vcsa(0xffffffffffffff9c, &(0x7f0000000100), 0x1, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
write$USERIO_CMD_SET_PORT_TYPE(r5, &(0x7f0000000680)={0x1, 0x4}, 0x2)
ioctl$FBIOGETCMAP(r5, 0x4604, &(0x7f00000004c0)={0x7, 0x6, &(0x7f00000003c0)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000400)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000440)=[0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000480)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]})
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r8, 0x4610, &(0x7f00000001c0)={0x7, 0x2})
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000380)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000200}, 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x98, 0x0, 0x100, 0x70bd2a, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, '@)!%'}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xaa8b}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x10001}]}, 0x98}, 0x1, 0x0, 0x0, 0x4090}, 0x44000)
r9 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000006c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r9, @ANYBLOB="01000000000000000000010000001200030000000000000000001400078008c029a7c42726d2fec4e1244980f66296a19400"/59, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
r10 = openat$vcsa(0xffffffffffffff9c, &(0x7f0000000500), 0x141a00, 0x0)
write$USERIO_CMD_SEND_INTERRUPT(r10, &(0x7f0000000540)={0x2, 0x3}, 0x2)
ioctl$UFFDIO_API(r6, 0xc018aa3f, &(0x7f0000000640)={0xaa, 0x20})

19:06:34 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000001c0)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x40000}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x38, 0x0, 0x100, 0x70bd2c, 0x25dfdbfb, {}, [@NBD_ATTR_SIZE_BYTES={0xc}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8f9}]}, 0x38}, 0x1, 0x0, 0x0, 0xc040}, 0x4008050)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000002c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32=r0, @ANYBLOB="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"], 0x4c}}, 0x0) (async)
r4 = socket$nl_generic(0x10, 0x3, 0x10)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, &(0x7f0000000000)) (async)
socketpair(0x25, 0x4, 0x1, &(0x7f0000000080))

[ 1585.257133] nbd: must specify an index to disconnect
19:06:34 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYRESOCT=r2, @ANYRES8=0x0, @ANYRES32=r0, @ANYRES8=r4], 0x38}, 0x1, 0x0, 0x0, 0x4011}, 0x4080)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYRESOCT=r2, @ANYRES8=0x0, @ANYRES32=r0, @ANYRES8=r4], 0x38}, 0x1, 0x0, 0x0, 0x4011}, 0x4080) (async)

19:06:34 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000580), r1)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000640)={&(0x7f0000000540)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x14, r7, 0x400, 0x70bd25, 0x25dfdbfe}, 0x14}, 0x1, 0x0, 0x0, 0x4000040}, 0x20000080)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:34 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:34 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
add_key(&(0x7f0000000580)='.dead\x00', &(0x7f00000005c0)={'syz', 0x2}, &(0x7f0000000600)="a46887ba98aa0f60bae4ce205017c560070a761b4d0f404436c92c8634ce6f9e7fe5123f5f59008cdade935a2db9d08477b722a1ee958ea2114dc6e62508", 0x3e, 0xfffffffffffffffb) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000040)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r2=>0xffffffffffffffff}}, './file0\x00'})
openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000080), 0x111000, 0x0)
r3 = openat$nvram(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0) (async)
read$usbmon(0xffffffffffffffff, &(0x7f0000000740)=""/185, 0xb9)
r4 = openat$vcsa(0xffffffffffffff9c, &(0x7f0000000100), 0x1, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
write$USERIO_CMD_SET_PORT_TYPE(r5, &(0x7f0000000680)={0x1, 0x4}, 0x2)
ioctl$FBIOGETCMAP(r5, 0x4604, &(0x7f00000004c0)={0x7, 0x6, &(0x7f00000003c0)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000400)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000440)=[0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000480)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}) (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0) (async)
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r8, 0x4610, &(0x7f00000001c0)={0x7, 0x2})
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000380)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000200}, 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x98, 0x0, 0x100, 0x70bd2a, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, '@)!%'}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xaa8b}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x10001}]}, 0x98}, 0x1, 0x0, 0x0, 0x4090}, 0x44000)
r9 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000006c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r9, @ANYBLOB="01000000000000000000010000001200030000000000000000001400078008c029a7c42726d2fec4e1244980f66296a19400"/59, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)
r10 = openat$vcsa(0xffffffffffffff9c, &(0x7f0000000500), 0x141a00, 0x0)
write$USERIO_CMD_SEND_INTERRUPT(r10, &(0x7f0000000540)={0x2, 0x3}, 0x2) (async)
ioctl$UFFDIO_API(r6, 0xc018aa3f, &(0x7f0000000640)={0xaa, 0x20})

[ 1585.296127] nbd: must specify at least one socket
19:06:34 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
syz_genetlink_get_family_id$nbd(&(0x7f0000000580), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:34 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x38, r2, 0x2, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5e}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x9}]}, 0x38}, 0x1, 0x0, 0x0, 0x10}, 0x10)
openat$mixer(0xffffffffffffff9c, &(0x7f00000002c0), 0x321d00, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x100, 0x4, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4000000000}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4000000001}]}, 0x4c}}, 0x0)
openat$vhost_vsock(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)

[ 1585.347162] nbd: must specify an index to disconnect
19:06:34 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:34 executing program 3:
r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x489c2, 0x0) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0) (async, rerun: 32)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000400)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f00000003c0)={&(0x7f0000000340)={0x70, r6, 0x10, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000000000000001}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffffffffffff}]}, 0x70}, 0x1, 0x0, 0x0, 0x81}, 0x88000) (async, rerun: 32)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={<r7=>0xffffffffffffffff})
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000002c0)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x40040004}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x54, 0x0, 0x0, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r0}, {0x8, 0x1, r0}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5d1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r0}]}]}, 0x54}, 0x1, 0x0, 0x0, 0x40090}, 0x22008811) (async, rerun: 32)
ioctl$SNDCTL_TMR_SELECT(r0, 0x40045408) (rerun: 32)
r8 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r8, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1585.369135] nbd: must specify at least one socket
19:06:34 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
add_key(&(0x7f0000000580)='.dead\x00', &(0x7f00000005c0)={'syz', 0x2}, &(0x7f0000000600)="a46887ba98aa0f60bae4ce205017c560070a761b4d0f404436c92c8634ce6f9e7fe5123f5f59008cdade935a2db9d08477b722a1ee958ea2114dc6e62508", 0x3e, 0xfffffffffffffffb)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000040)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r2=>0xffffffffffffffff}}, './file0\x00'}) (async)
openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000080), 0x111000, 0x0) (async)
r3 = openat$nvram(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0) (async)
read$usbmon(0xffffffffffffffff, &(0x7f0000000740)=""/185, 0xb9)
r4 = openat$vcsa(0xffffffffffffff9c, &(0x7f0000000100), 0x1, 0x0) (async)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0) (async)
write$USERIO_CMD_SET_PORT_TYPE(r5, &(0x7f0000000680)={0x1, 0x4}, 0x2) (async)
ioctl$FBIOGETCMAP(r5, 0x4604, &(0x7f00000004c0)={0x7, 0x6, &(0x7f00000003c0)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000400)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000440)=[0x0, 0x0, 0x0, 0x0, 0x0], &(0x7f0000000480)=[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}) (async)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0) (async)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0) (async)
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r8, 0x4610, &(0x7f00000001c0)={0x7, 0x2}) (async)
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000380)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x2000200}, 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x98, 0x0, 0x100, 0x70bd2a, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8, 0x1, r2}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, '@)!%'}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xaa8b}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x10001}]}, 0x98}, 0x1, 0x0, 0x0, 0x4090}, 0x44000) (async)
r9 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000006c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r9, @ANYBLOB="01000000000000000000010000001200030000000000000000001400078008c029a7c42726d2fec4e1244980f66296a19400"/59, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0) (async)
r10 = openat$vcsa(0xffffffffffffff9c, &(0x7f0000000500), 0x141a00, 0x0)
write$USERIO_CMD_SEND_INTERRUPT(r10, &(0x7f0000000540)={0x2, 0x3}, 0x2)
ioctl$UFFDIO_API(r6, 0xc018aa3f, &(0x7f0000000640)={0xaa, 0x20})

19:06:34 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x38, r2, 0x2, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5e}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x9}]}, 0x38}, 0x1, 0x0, 0x0, 0x10}, 0x10)
openat$mixer(0xffffffffffffff9c, &(0x7f00000002c0), 0x321d00, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x100, 0x4, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4000000000}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4000000001}]}, 0x4c}}, 0x0)
openat$vhost_vsock(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x38, r2, 0x2, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5e}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x9}]}, 0x38}, 0x1, 0x0, 0x0, 0x10}, 0x10) (async)
openat$mixer(0xffffffffffffff9c, &(0x7f00000002c0), 0x321d00, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x100, 0x4, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4000000000}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4000000001}]}, 0x4c}}, 0x0) (async)
openat$vhost_vsock(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) (async)

19:06:34 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:34 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r2, 0x8933, 0x0) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000040)=ANY=[@ANYRESOCT=r2, @ANYRES8=0x0, @ANYRES32=r0, @ANYRES8=r4], 0x38}, 0x1, 0x0, 0x0, 0x4011}, 0x4080)

19:06:34 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:34 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000140)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x38, r2, 0x2, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5e}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x9}]}, 0x38}, 0x1, 0x0, 0x0, 0x10}, 0x10) (async)
openat$mixer(0xffffffffffffff9c, &(0x7f00000002c0), 0x321d00, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x100, 0x4, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4000000000}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4000000001}]}, 0x4c}}, 0x0) (async)
openat$vhost_vsock(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)

[ 1585.478876] nbd: must specify at least one socket
19:06:34 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:34 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:34 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:34 executing program 4:
epoll_ctl$EPOLL_CTL_MOD(0xffffffffffffffff, 0x3, 0xffffffffffffffff, &(0x7f0000000000)={0x10000004})
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:35 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={0x0, 0x4c}}, 0x0)

19:06:35 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r3, 0x4610, &(0x7f0000000000)={0x1a})

19:06:35 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:35 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:35 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:35 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={0x0, 0x4c}}, 0x0)

19:06:35 executing program 4:
epoll_ctl$EPOLL_CTL_MOD(0xffffffffffffffff, 0x3, 0xffffffffffffffff, &(0x7f0000000000)={0x10000004})
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
epoll_ctl$EPOLL_CTL_MOD(0xffffffffffffffff, 0x3, 0xffffffffffffffff, &(0x7f0000000000)={0x10000004}) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)

19:06:35 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000580), r1)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000640)={&(0x7f0000000540)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x14, r7, 0x400, 0x70bd25, 0x25dfdbfe}, 0x14}, 0x1, 0x0, 0x0, 0x4000040}, 0x20000080)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:35 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:35 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (async)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r3, 0x4610, &(0x7f0000000000)={0x1a}) (async)
ioctl$FBIOPUT_CON2FBMAP(r3, 0x4610, &(0x7f0000000000)={0x1a})

19:06:35 executing program 0:
r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x489c2, 0x0)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000400)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f00000003c0)={&(0x7f0000000340)={0x70, r6, 0x10, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000000000000001}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffffffffffff}]}, 0x70}, 0x1, 0x0, 0x0, 0x81}, 0x88000)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={<r7=>0xffffffffffffffff})
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000002c0)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x40040004}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x54, 0x0, 0x0, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r0}, {0x8, 0x1, r0}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5d1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r0}]}]}, 0x54}, 0x1, 0x0, 0x0, 0x40090}, 0x22008811)
ioctl$SNDCTL_TMR_SELECT(r0, 0x40045408)
r8 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r8, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:35 executing program 4:
epoll_ctl$EPOLL_CTL_MOD(0xffffffffffffffff, 0x3, 0xffffffffffffffff, &(0x7f0000000000)={0x10000004}) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:35 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={0x0, 0x4c}}, 0x0)

19:06:35 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1585.778113] nbd: must specify an index to disconnect
[ 1585.797972] nla_parse: 302 callbacks suppressed
[ 1585.797978] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
[ 1585.816239] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
19:06:35 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32], 0x4c}}, 0x0)

19:06:35 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000040), 0x40000, 0x0)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="e3c1024dd85f263c443689a48f38e074ea"], 0x38}}, 0x0)

[ 1585.831228] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
[ 1585.855241] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'.
19:06:35 executing program 5:
r0 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000000), 0x489c2, 0x0)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r5)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r4, &(0x7f0000000400)={&(0x7f0000000300)={0x10, 0x0, 0x0, 0x800000}, 0xc, &(0x7f00000003c0)={&(0x7f0000000340)={0x70, r6, 0x10, 0x70bd27, 0x25dfdbfd, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000000000000001}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x7}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0xffffffffffffffff}]}, 0x70}, 0x1, 0x0, 0x0, 0x81}, 0x88000)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000080)={<r7=>0xffffffffffffffff})
sendmsg$NBD_CMD_STATUS(r3, &(0x7f00000002c0)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x40040004}, 0xc, &(0x7f0000000140)={&(0x7f00000000c0)={0x54, 0x0, 0x0, 0x70bd29, 0x25dfdbfb, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SOCKETS={0x1c, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r0}, {0x8, 0x1, r0}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5d1}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8, 0x1, r0}]}]}, 0x54}, 0x1, 0x0, 0x0, 0x40090}, 0x22008811)
ioctl$SNDCTL_TMR_SELECT(r0, 0x40045408)
r8 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r8, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1585.880771] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'.
[ 1585.899926] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'.
19:06:35 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:35 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32], 0x4c}}, 0x0)

[ 1585.941602] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'.
[ 1585.969013] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
19:06:35 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0) (async, rerun: 64)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0) (rerun: 64)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async, rerun: 64)
ioctl$FBIOPUT_CON2FBMAP(r3, 0x4610, &(0x7f0000000000)={0x1a}) (rerun: 64)

19:06:35 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1585.993615] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
[ 1586.020167] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
19:06:35 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:35 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
syz_open_dev$vcsa(&(0x7f0000000680), 0x7, 0xd0000)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000500)={&(0x7f0000000140)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x20, r5, 0x1, 0x70bd2b, 0x25dfdbfb, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8000000000000001}]}, 0x20}, 0x1, 0x0, 0x0, 0x4000}, 0x40000)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
r7 = syz_genetlink_get_family_id$nbd(&(0x7f0000000580), r1)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000640)={&(0x7f0000000540)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f0000000600)={&(0x7f00000005c0)={0x14, r7, 0x400, 0x70bd25, 0x25dfdbfe}, 0x14}, 0x1, 0x0, 0x0, 0x4000040}, 0x20000080)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r6, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:35 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000040), 0x40000, 0x0)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="e3c1024dd85f263c443689a48f38e074ea"], 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000040), 0x40000, 0x0) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="e3c1024dd85f263c443689a48f38e074ea"], 0x38}}, 0x0) (async)

19:06:35 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32], 0x4c}}, 0x0)

19:06:35 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x4c, &(0x7f00000005c0)={&(0x7f0000000580)={0x14, 0x0, 0x2}, 0x14}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="34040000", @ANYRES16=0x0, @ANYBLOB="04002dbd7000fcdbdf250200000008000a006e6264000c000800f7ffffffffffffff0c0006000200000000000000"], 0x34}, 0x1, 0x0, 0x0, 0x40040d1}, 0x804)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1586.045594] nbd: must specify a size in bytes for the device
[ 1586.076159] nbd: must specify a size in bytes for the device
19:06:35 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:35 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB], 0x4c}}, 0x0)

19:06:35 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 64)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (rerun: 64)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x4c, &(0x7f00000005c0)={&(0x7f0000000580)={0x14, 0x0, 0x2}, 0x14}}, 0x0) (async)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="34040000", @ANYRES16=0x0, @ANYBLOB="04002dbd7000fcdbdf250200000008000a006e6264000c000800f7ffffffffffffff0c0006000200000000000000"], 0x34}, 0x1, 0x0, 0x0, 0x40040d1}, 0x804) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:35 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32], 0x4c}}, 0x0)

[ 1586.149081] nbd: must specify a size in bytes for the device
[ 1586.164295] nbd: must specify a size in bytes for the device
[ 1586.187290] nbd: must specify an index to disconnect
19:06:35 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:35 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:35 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000040), 0x40000, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="e3c1024dd85f263c443689a48f38e074ea"], 0x38}}, 0x0)

19:06:35 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB], 0x4c}}, 0x0)

[ 1586.210194] nbd: must specify a size in bytes for the device
[ 1586.228340] nbd: must specify a size in bytes for the device
19:06:35 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1586.266283] nbd: must specify a size in bytes for the device
19:06:35 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000040), 0x40000, 0x0)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="e3c1024dd85f263c443689a48f38e074ea"], 0x38}}, 0x0)

19:06:35 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:35 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB], 0x4c}}, 0x0)

[ 1586.312305] nbd: must specify a size in bytes for the device
[ 1586.328788] nbd: must specify a size in bytes for the device
19:06:35 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000600)={0x0, 0x4c, &(0x7f00000005c0)={&(0x7f0000000580)={0x14, 0x0, 0x2}, 0x14}}, 0x0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="34040000", @ANYRES16=0x0, @ANYBLOB="04002dbd7000fcdbdf250200000008000a006e6264000c000800f7ffffffffffffff0c0006000200000000000000"], 0x34}, 0x1, 0x0, 0x0, 0x40040d1}, 0x804) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:35 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:35 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:35 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1586.399056] nbd: must specify a size in bytes for the device
19:06:35 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000040)={{0x1, 0x1, 0x18, <r6=>0xffffffffffffffff}, './file0\x00'})
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
r8 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000080), 0x10000, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f00000000c0)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r9=>0xffffffffffffffff}}, './file0\x00'})
pipe2$watch_queue(&(0x7f0000000100)={0xffffffffffffffff, <r10=>0xffffffffffffffff}, 0x80)
r11 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000140)='/sys/kernel/debug/binder/state\x00', 0x0, 0x0)
r12 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000200), 0x204001, 0x0)
r13 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r13, 0x8933, 0x0)
pipe2$watch_queue(&(0x7f00000002c0)={0xffffffffffffffff, <r14=>0xffffffffffffffff}, 0x80)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000300)={<r15=>0xffffffffffffffff})
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f00000004c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x80000080}, 0xc, &(0x7f0000000480)={&(0x7f0000000340)={0x108, r5, 0x200, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x4b}, @NBD_ATTR_SOCKETS={0x54, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8}, {0x8}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8000000000000000}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x81}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x3}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_SOCKETS={0x44, 0x7, 0x0, 0x1, [{0x8, 0x1, r11}, {0x8}, {0x8}, {0x8, 0x1, r12}, {0x8, 0x1, r13}, {0x8, 0x1, r14}, {0x8, 0x1, r15}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x108}, 0x1, 0x0, 0x0, 0x8000}, 0x84)

19:06:35 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRESHEX=r3, @ANYRESOCT=r3, @ANYBLOB="010026bd700000000000010000000c00030000040000000000001400078008000100", @ANYRES32=r2, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="0c00060096dc581aa616b37e0c0079dafd2452bc8153059f"], 0x4c}, 0x1, 0x0, 0x0, 0x80}, 0x4000040)

19:06:35 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:35 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:35 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1586.442928] nbd: must specify a size in bytes for the device
19:06:35 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa00000000000000"], 0x4c}}, 0x0)

19:06:35 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRESHEX=r3, @ANYRESOCT=r3, @ANYBLOB="010026bd700000000000010000000c00030000040000000000001400078008000100", @ANYRES32=r2, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="0c00060096dc581aa616b37e0c0079dafd2452bc8153059f"], 0x4c}, 0x1, 0x0, 0x0, 0x80}, 0x4000040)

19:06:35 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:35 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:35 executing program 4:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1586.537624] nbd: must specify an index to disconnect
[ 1586.550497] nbd: must specify a size in bytes for the device
19:06:36 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa00000000000000"], 0x4c}}, 0x0)

19:06:36 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$autofs(0xffffffffffffff9c, &(0x7f00000001c0), 0x10000, 0x0)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000140)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x28, r2, 0x800, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '\']'}]}, 0x28}, 0x1, 0x0, 0x0, 0x400c011}, 0x4010)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000200)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x400}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x2}]}, 0x38}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000340)={&(0x7f0000000280)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000300)={&(0x7f00000002c0)={0x2c, r2, 0x2, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x774a}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4000}, 0x48000)

19:06:36 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0) (async)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYRESHEX=r3, @ANYRESOCT=r3, @ANYBLOB="010026bd700000000000010000000c00030000040000000000001400078008000100", @ANYRES32=r2, @ANYBLOB="08000100", @ANYRES32=r4, @ANYBLOB="0c00060096dc581aa616b37e0c0079dafd2452bc8153059f"], 0x4c}, 0x1, 0x0, 0x0, 0x80}, 0x4000040)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa00000000000000"], 0x4c}}, 0x0)

19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

[ 1586.662679] nbd: must specify a size in bytes for the device
[ 1586.695510] nbd: must specify at least one socket
19:06:36 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$autofs(0xffffffffffffff9c, &(0x7f00000001c0), 0x10000, 0x0)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000140)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x28, r2, 0x800, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '\']'}]}, 0x28}, 0x1, 0x0, 0x0, 0x400c011}, 0x4010)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000200)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x400}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x2}]}, 0x38}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000340)={&(0x7f0000000280)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000300)={&(0x7f00000002c0)={0x2c, r2, 0x2, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x774a}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4000}, 0x48000)

19:06:36 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r3)
syz_genetlink_get_family_id$nbd(&(0x7f0000000240), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1586.781658] nbd: must specify a size in bytes for the device
[ 1586.796445] nbd: must specify at least one socket
19:06:36 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002000000"], 0x4c}}, 0x0)

19:06:36 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
openat$autofs(0xffffffffffffff9c, &(0x7f00000001c0), 0x10000, 0x0)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000140)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x80000000}, 0xc, &(0x7f0000000100)={&(0x7f00000000c0)={0x28, r2, 0x800, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x6, 0xa, '\']'}]}, 0x28}, 0x1, 0x0, 0x0, 0x400c011}, 0x4010)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000200)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x400}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x2}]}, 0x38}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000340)={&(0x7f0000000280)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000300)={&(0x7f00000002c0)={0x2c, r2, 0x2, 0x70bd28, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x774a}]}, 0x2c}, 0x1, 0x0, 0x0, 0x4000}, 0x48000)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000540)={&(0x7f0000000480)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000500)={&(0x7f00000004c0)={0x2c, r4, 0x800, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}]}, 0x2c}, 0x1, 0x0, 0x0, 0x801}, 0x20000000)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000040), 0x208200, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r7=>0xffffffffffffffff}}, './file0\x00'})
r8 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r9 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r10 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r9)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r10, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r8, &(0x7f0000000440)={&(0x7f0000000380)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000400)={&(0x7f00000003c0)={0x34, r10, 0x2, 0x70bd2d, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0xc, 0xa, '-\\!\\\\#(-'}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}]}, 0x34}, 0x1, 0x0, 0x0, 0x40000}, 0x4801)
r11 = openat$vcsa(0xffffffffffffff9c, &(0x7f00000000c0), 0x44800, 0x0)
r12 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000100), 0x8000, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000340)={&(0x7f0000000000), 0xc, &(0x7f0000000140)={&(0x7f00000002c0)={0x44, r5, 0x300, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x2}]}, 0x44}, 0x1, 0x0, 0x0, 0x40044}, 0x20000004)

19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa00000000000000"], 0x4c}}, 0x0)

19:06:36 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x28, r2, 0xc, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x28}, 0x1, 0x0, 0x0, 0x20000000}, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1586.908131] nbd: must specify at least one socket
19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1586.956919] nbd: must specify an index to disconnect
19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x28, r2, 0xc, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x28}, 0x1, 0x0, 0x0, 0x20000000}, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:36 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa00000000000000"], 0x4c}}, 0x0)

19:06:36 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_STATUS(r4, &(0x7f0000000100)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x22000240}, 0xc, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="0000000063849bb69ebd80cd10adce228e4ee80196cde7120d77acab965caf60c5ff4f87e2b73ed0d6bbfd5a1c206a92471434eaffdf50288c3396cfe42ed5cb0178445ea1f8be276a993260fac2ab1f6dcd3c0651d7751663b340d5e89615090d5e6ecd2d727d305d355bdbdc9ef4956127fd7a0af7107737c123b6cf72833fee11c03ff4f3dd4eb0714355d5a43ee2f96d317fc096c36afedcf7767b8bfb2ff2bf692b254ffc14640d5f404a43183f7b873b9afa6b33b9e8b7db2d3e48", @ANYRES16=r2, @ANYBLOB="00042abd7000ffdbdf25050000000c000800ffff0000000000000800010000000000"], 0x28}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r5, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1586.988288] nbd: must specify a size in bytes for the device
[ 1587.005125] nbd: must specify an index to disconnect
19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x10000000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x28, r2, 0xc, 0x70bd2c, 0x25dfdbfc, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x2}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x28}, 0x1, 0x0, 0x0, 0x20000000}, 0x10) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1587.088910] nbd: must specify a size in bytes for the device
19:06:36 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa00000000000000"], 0x4c}}, 0x0)

19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
request_key(&(0x7f0000000000)='blacklist\x00', &(0x7f0000000040)={'syz', 0x2}, &(0x7f0000000080)=':\'/0+[/\\\x00', 0xfffffffffffffffc)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000300), 0x1, 0x0)
ioctl$SCSI_IOCTL_START_UNIT(r2, 0x5)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f00000002c0)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000200)={&(0x7f0000000100)=ANY=[@ANYBLOB="44001600", @ANYRES16=r3, @ANYBLOB="040029bd7000fbdbdf2502000000080001000000000008000100000000000c000500200000000000000008000100000000000c0002009a13000000000000"], 0x44}}, 0x20000050)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="38010000", @ANYRES16=r3, @ANYBLOB="00040000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

[ 1587.218095] nbd: must specify a size in bytes for the device
19:06:36 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async, rerun: 32)
request_key(&(0x7f0000000000)='blacklist\x00', &(0x7f0000000040)={'syz', 0x2}, &(0x7f0000000080)=':\'/0+[/\\\x00', 0xfffffffffffffffc) (rerun: 32)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000300), 0x1, 0x0)
ioctl$SCSI_IOCTL_START_UNIT(r2, 0x5) (async)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f00000002c0)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000200)={&(0x7f0000000100)=ANY=[@ANYBLOB="44001600", @ANYRES16=r3, @ANYBLOB="040029bd7000fbdbdf2502000000080001000000000008000100000000000c000500200000000000000008000100000000000c0002009a13000000000000"], 0x44}}, 0x20000050) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="38010000", @ANYRES16=r3, @ANYBLOB="00040000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa00000000000000"], 0x4c}}, 0x0)

19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
request_key(&(0x7f0000000000)='blacklist\x00', &(0x7f0000000040)={'syz', 0x2}, &(0x7f0000000080)=':\'/0+[/\\\x00', 0xfffffffffffffffc)
r2 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000300), 0x1, 0x0)
ioctl$SCSI_IOCTL_START_UNIT(r2, 0x5)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f00000002c0)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000200)={&(0x7f0000000100)=ANY=[@ANYBLOB="44001600", @ANYRES16=r3, @ANYBLOB="040029bd7000fbdbdf2502000000080001000000000008000100000000000c000500200000000000000008000100000000000c0002009a13000000000000"], 0x44}}, 0x20000050)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="38010000", @ANYRES16=r3, @ANYBLOB="00040000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
request_key(&(0x7f0000000000)='blacklist\x00', &(0x7f0000000040)={'syz', 0x2}, &(0x7f0000000080)=':\'/0+[/\\\x00', 0xfffffffffffffffc) (async)
openat$vcs(0xffffffffffffff9c, &(0x7f0000000300), 0x1, 0x0) (async)
ioctl$SCSI_IOCTL_START_UNIT(r2, 0x5) (async)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1) (async)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async)
sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f00000002c0)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000200)={&(0x7f0000000100)=ANY=[@ANYBLOB="44001600", @ANYRES16=r3, @ANYBLOB="040029bd7000fbdbdf2502000000080001000000000008000100000000000c000500200000000000000008000100000000000c0002009a13000000000000"], 0x44}}, 0x20000050) (async)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="38010000", @ANYRES16=r3, @ANYBLOB="00040000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0) (async)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa00000000000000"], 0x4c}}, 0x0)

19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1587.414130] nbd: must specify a size in bytes for the device
19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:36 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:36 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r1, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:36 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:37 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa00000000000000"], 0x4c}}, 0x0)

[ 1587.529154] nbd: must specify a size in bytes for the device
19:06:37 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 1:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c00"], 0x4c}}, 0x0)

19:06:37 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r1, 0x8933, 0x0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000140)={<r2=>0xffffffffffffffff})
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={<r4=>0xffffffffffffffff})
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000300)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000002c0)={&(0x7f00000001c0)={0x74, 0x0, 0x100, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r2}]}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8, 0x1, r4}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x22}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x74}, 0x1, 0x0, 0x0, 0x40000000}, 0x20000000)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)=ANY=[@ANYBLOB="b1007f00", @ANYRES16=0x0, @ANYBLOB="0000000000000000000002000000"], 0x14}}, 0x0)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r5)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='\x00', @ANYRES16=r6, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
r7 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r7, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r7)

19:06:37 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:37 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1587.629693] nbd: must specify a size in bytes for the device
19:06:37 executing program 1:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:37 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r1, 0x8933, 0x0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000140)={<r2=>0xffffffffffffffff})
r3 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r3, 0x8933, 0x0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={<r4=>0xffffffffffffffff})
sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000300)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000002c0)={&(0x7f00000001c0)={0x74, 0x0, 0x100, 0x70bd25, 0x25dfdbff, {}, [@NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r1}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r2}]}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8, 0x1, r4}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x22}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x74}, 0x1, 0x0, 0x0, 0x40000000}, 0x20000000)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r5, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)=ANY=[@ANYBLOB="b1007f00", @ANYRES16=0x0, @ANYBLOB="0000000000000000000002000000"], 0x14}}, 0x0)
r6 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r5)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='\x00', @ANYRES16=r6, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)
r7 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r7, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r7)

19:06:37 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 1:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1587.728070] nbd: must specify a size in bytes for the device
19:06:37 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c00"], 0x4c}}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:37 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000000200)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x40000000}, 0xc, &(0x7f00000001c0)={&(0x7f0000000100)={0x54, r4, 0x300, 0x70bd29, 0x25dfdbfd, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xfffffffffffffffb}, @NBD_ATTR_TIMEOUT={0xc}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x7}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x270c}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x54}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB="380000000eed927fe183a4241a9feebd1f281c20defe60f0358f65dfa87a0c04d88bd1f4830ba6b61117b88a68be7f32370c319822c79298bb8958add0eb1e135fc841310b09066f55f1df6d1ce5508de4eb04757afadfc7df4f0444b2ddaff1a895839391ed43f15d606d3ad7a38d70d9761c9bfa8676a1ede2a460f4108cce", @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000000c00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:37 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:37 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c00"], 0x4c}}, 0x0)

19:06:37 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r2, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

[ 1587.856124] nbd: must specify a size in bytes for the device
[ 1587.885419] nbd: must specify an index to disconnect
19:06:37 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:37 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1587.955254] nbd: must specify a size in bytes for the device
19:06:37 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:37 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:37 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:37 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:37 executing program 0:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000000000000000"], 0x38}}, 0x0)

19:06:37 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000000c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x4000}, 0xc, &(0x7f0000000080)={&(0x7f0000000040)={0x1c, r3, 0x4, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0x1c}, 0x1, 0x0, 0x0, 0x880}, 0x4000080)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000140), r1)
sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000000380)={&(0x7f0000000100)={0x10, 0x0, 0x0, 0x4000000}, 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x6c, r5, 0x2, 0x70bd28, 0x25dfdbfc, {}, [@NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x100000001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0xbd}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x6}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x5}]}, 0x6c}, 0x1, 0x0, 0x0, 0x4008080}, 0x1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1588.083892] nbd: must specify a size in bytes for the device
19:06:37 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:37 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:37 executing program 5:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

[ 1588.167080] nbd: must specify a size in bytes for the device
[ 1588.189393] nbd: must specify an index to disconnect
19:06:37 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:37 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:37 executing program 5:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:37 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:37 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:37 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

19:06:37 executing program 5:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1588.285346] nbd: must specify a size in bytes for the device
[ 1588.310610] nbd: must specify a size in bytes for the device
19:06:37 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

19:06:37 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

[ 1588.365760] nbd: must specify a size in bytes for the device
19:06:37 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:37 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:37 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000380)={&(0x7f0000000140), 0xc, &(0x7f0000000340)={&(0x7f00000002c0)={0x4c, 0x0, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x5, 0xa, '/'}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x21}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x6cda}]}, 0x4c}, 0x1, 0x0, 0x0, 0x4004}, 0x20000000)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r2)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, r3, 0x1, 0x70bd29, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x44810}, 0x800)
r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r4)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r5, 0x1}, 0x14}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

[ 1588.444518] nbd: must specify a size in bytes for the device
19:06:37 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:37 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:37 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:37 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB, @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:37 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

[ 1588.516542] nbd: must specify a size in bytes for the device
19:06:37 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:38 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1588.583893] nbd: must specify at least one socket
19:06:38 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:38 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={0x0, 0x38}}, 0x0)

19:06:38 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB, @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

[ 1588.614072] nbd: must specify a size in bytes for the device
19:06:38 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(0x0, r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:38 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB, @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:38 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={0x0, 0x38}}, 0x0)

19:06:38 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB, @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:38 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1588.719401] nbd: must specify a size in bytes for the device
19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:38 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={0x0, 0x38}}, 0x0)

19:06:38 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={0x0, 0x38}}, 0x0)

19:06:38 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1588.796973] nbd: must specify a size in bytes for the device
[ 1588.824554] nbd: must specify a size in bytes for the device
19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

19:06:38 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\b\x00', @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:38 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32], 0x38}}, 0x0)

19:06:38 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x3c}}, 0x0)

19:06:38 executing program 4:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

19:06:38 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\b\x00', @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:38 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

19:06:38 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32], 0x38}}, 0x0)

19:06:38 executing program 4:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1588.937729] nbd: must specify a size in bytes for the device
[ 1588.968766] nbd: must specify at least one socket
19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

19:06:38 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x3c}}, 0x0)

[ 1589.018104] nbd: must specify a size in bytes for the device
[ 1589.048491] nbd: must specify at least one socket
19:06:38 executing program 4:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r0)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r1, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

19:06:38 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32], 0x38}}, 0x0)

19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB='\b\x00', @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

[ 1589.070647] nbd: must specify a size in bytes for the device
19:06:38 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

19:06:38 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x3c}}, 0x0)

19:06:38 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

[ 1589.120095] nbd: must specify a size in bytes for the device
19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1589.165312] nbd: must specify at least one socket
19:06:38 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB], 0x38}}, 0x0)

19:06:38 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, r3, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:38 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="080001", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:38 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

[ 1589.187414] nbd: must specify a size in bytes for the device
[ 1589.212613] nbd: must specify a size in bytes for the device
19:06:38 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000100)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000080)={0x20, r3, 0x100, 0x70bd2c, 0x25dfdbfe, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}]}, 0x20}}, 0x801)

19:06:38 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB], 0x38}}, 0x0)

19:06:38 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

[ 1589.263681] nbd: must specify at least one socket
[ 1589.278394] nbd: must specify at least one socket
[ 1589.288246] nbd: must specify a size in bytes for the device
19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

19:06:38 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="080001", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:38 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r1)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:38 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB], 0x38}}, 0x0)

[ 1589.345761] nbd: must specify at least one socket
19:06:38 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:38 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r3, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x40}, 0xc, &(0x7f0000000100)={&(0x7f0000000080)={0x74, 0x0, 0x121, 0x70bd2d, 0x25dfdbfb, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x10000}, @NBD_ATTR_BACKEND_IDENTIFIER={0x10, 0xa, '+\')\'{\\/:!@}*'}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x10c}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x4}]}, 0x74}, 0x1, 0x0, 0x0, 0x4041}, 0x40)

19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="080001", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:38 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

[ 1589.413350] nbd: must specify a size in bytes for the device
[ 1589.450113] nbd: must specify at least one socket
19:06:38 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002000000"], 0x38}}, 0x0)

19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:38 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

19:06:38 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)

19:06:38 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x20}}, 0x0)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f00000000c0), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030098859a99300d00000000000000001400078008000100", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002000000000000000000"], 0x4c}}, 0x0)

19:06:38 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

[ 1589.483316] nbd: must specify a size in bytes for the device
[ 1589.505695] nbd: must specify at least one socket
19:06:38 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB], 0x38}}, 0x0)

19:06:38 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x3c}}, 0x0)

19:06:39 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYRES32, @ANYBLOB="080001", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x0)

[ 1589.586975] nbd: must specify at least one socket
[ 1589.601538] nbd: must specify at least one socket
[ 1589.625307] nbd: must specify a size in bytes for the device
19:06:39 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)

19:06:39 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x3c}}, 0x0)

[ 1589.635462] nbd: must specify at least one socket
19:06:39 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB], 0x38}}, 0x0)

19:06:39 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

[ 1589.666111] nbd: must specify a size in bytes for the device
[ 1589.701380] nbd: must specify at least one socket
19:06:39 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = openat$pfkey(0xffffffffffffff9c, &(0x7f0000000080), 0x101080, 0x0)
r4 = openat$full(0xffffffffffffff9c, &(0x7f00000000c0), 0x583202, 0x0)
r5 = openat$zero(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
write$P9_RMKNOD(r5, &(0x7f0000000040)={0x14, 0x13, 0x1, {0x8, 0x0, 0x5}}, 0x14)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={<r6=>0xffffffffffffffff})
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x5c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SOCKETS={0x24, 0x7, 0x0, 0x1, [{0x8, 0x1, r3}, {0x8, 0x1, r4}, {0x8, 0x1, r6}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x6}]}, 0x5c}}, 0x0)

19:06:39 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)

19:06:39 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB], 0x38}}, 0x0)

[ 1589.713112] nbd: must specify at least one socket
[ 1589.724968] nbd: must specify a size in bytes for the device
19:06:39 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x3c}}, 0x0)

19:06:39 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c00030000000000000000001400078008000100", @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

19:06:39 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)

[ 1589.756880] nbd: must specify a size in bytes for the device
[ 1589.790694] nbd: must specify at least one socket
19:06:39 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

19:06:39 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="060002"], 0x38}}, 0x0)

[ 1589.815524] nbd: must specify at least one socket
[ 1589.824259] nbd: must specify a size in bytes for the device
19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

19:06:39 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

19:06:39 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:39 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:39 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

[ 1589.859353] nbd: must specify a size in bytes for the device
[ 1589.894840] nbd: must specify at least one socket
19:06:39 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB], 0x38}}, 0x0)

19:06:39 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

19:06:39 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:39 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

19:06:39 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

19:06:39 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x2c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x2c}}, 0x0)

[ 1589.995269] nbd: must specify at least one socket
19:06:39 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB], 0x38}}, 0x0)

19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:39 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:39 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)

19:06:39 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, 0x0, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:39 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:39 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r8=>0xffffffffffffffff}}, './file0\x00'})
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r9=>0xffffffffffffffff})
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18, <r11=>0xffffffffffffffff}, './file0\x00'})
r12 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r12, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000380)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000140)={&(0x7f0000000280)={0xd4, r2, 0x20, 0x70bd26, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}, {0x8, 0x1, r5}, {0x8, 0x1, r6}]}, @NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8}, {0x8}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0xd4}, 0x1, 0x0, 0x0, 0x801}, 0xc1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:39 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB], 0x38}}, 0x0)

[ 1590.130498] nbd: must specify at least one socket
19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

[ 1590.174278] nbd: must specify at least one socket
19:06:39 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f00000005c0)={&(0x7f0000000500)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000580)={&(0x7f0000000540)={0x14, r3, 0x20, 0x70bd26, 0x25dfdbff}, 0x14}, 0x1, 0x0, 0x0, 0x4000}, 0x40080)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100000}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0xa8, r5, 0x4, 0x70bd2d, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7ad8}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x209}]}, 0xa8}, 0x1, 0x0, 0x0, 0x410}, 0x20004000)
r7 = openat$nvram(0xffffffffffffff9c, &(0x7f0000000300), 0x268102, 0x0)
r8 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000340)='/proc/cpuinfo\x00', 0x0, 0x0)
r9 = openat$zero(0xffffffffffffff9c, &(0x7f0000000380), 0x80, 0x0)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f00000004c0)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000480)={&(0x7f00000003c0)={0x88, r4, 0x8, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8, 0x1, r6}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x20}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1a}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7866dc5a}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2a8}]}, 0x88}, 0x1, 0x0, 0x0, 0x4}, 0x20000000)

19:06:39 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)

19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x48, r2, 0x0, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x48}}, 0x0)

19:06:39 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r8=>0xffffffffffffffff}}, './file0\x00'})
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r9=>0xffffffffffffffff})
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18, <r11=>0xffffffffffffffff}, './file0\x00'})
r12 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r12, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000380)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000140)={&(0x7f0000000280)={0xd4, r2, 0x20, 0x70bd26, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}, {0x8, 0x1, r5}, {0x8, 0x1, r6}]}, @NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8}, {0x8}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0xd4}, 0x1, 0x0, 0x0, 0x801}, 0xc1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:39 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)

19:06:39 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:39 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r2)
sendmsg$NBD_CMD_DISCONNECT(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r3, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
sendmsg$NBD_CMD_STATUS(0xffffffffffffffff, &(0x7f00000005c0)={&(0x7f0000000500)={0x10, 0x0, 0x0, 0x200000}, 0xc, &(0x7f0000000580)={&(0x7f0000000540)={0x14, r3, 0x20, 0x70bd26, 0x25dfdbff}, 0x14}, 0x1, 0x0, 0x0, 0x4000}, 0x40080)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x38, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)
r5 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x100000}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0xa8, r5, 0x4, 0x70bd2d, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x34, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8}, {0x8}, {0x8}, {0x8, 0x1, r6}]}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x4}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7ad8}, @NBD_ATTR_SERVER_FLAGS={0xc}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x209}]}, 0xa8}, 0x1, 0x0, 0x0, 0x410}, 0x20004000)
r7 = openat$nvram(0xffffffffffffff9c, &(0x7f0000000300), 0x268102, 0x0)
r8 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000340)='/proc/cpuinfo\x00', 0x0, 0x0)
r9 = openat$zero(0xffffffffffffff9c, &(0x7f0000000380), 0x80, 0x0)
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
sendmsg$NBD_CMD_STATUS(r1, &(0x7f00000004c0)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x800}, 0xc, &(0x7f0000000480)={&(0x7f00000003c0)={0x88, r4, 0x8, 0x70bd26, 0x25dfdbff, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8, 0x1, r6}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x20}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1a}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7866dc5a}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x2a8}]}, 0x88}, 0x1, 0x0, 0x0, 0x4}, 0x20000000)

19:06:39 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="0600"], 0x38}}, 0x0)

[ 1590.254837] nbd: must specify at least one socket
[ 1590.274258] nbd: must specify an index to disconnect
19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x3c}}, 0x0)

19:06:39 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x3c}}, 0x0)

19:06:39 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18, 0xffffffffffffffff, {<r8=>0xffffffffffffffff}}, './file0\x00'})
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)={<r9=>0xffffffffffffffff})
r10 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r10, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18, <r11=>0xffffffffffffffff}, './file0\x00'})
r12 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r12, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000000380)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000140)={&(0x7f0000000280)={0xd4, r2, 0x20, 0x70bd26, 0x25dfdbfd, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_SOCKETS={0x2c, 0x7, 0x0, 0x1, [{0x8}, {0x8}, {0x8, 0x1, r4}, {0x8, 0x1, r5}, {0x8, 0x1, r6}]}, @NBD_ATTR_SOCKETS={0x4c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r7}, {0x8, 0x1, r8}, {0x8, 0x1, r9}, {0x8, 0x1, r10}, {0x8}, {0x8}, {0x8, 0x1, r11}, {0x8, 0x1, r12}]}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8001}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}]}, 0xd4}, 0x1, 0x0, 0x0, 0x801}, 0xc1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:39 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="0600"], 0x38}}, 0x0)

[ 1590.369053] nbd: must specify at least one socket
[ 1590.376691] nbd: must specify a size in bytes for the device
[ 1590.395640] nbd: must specify an index to disconnect
19:06:39 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0xc, 0x7, 0x0, 0x1, [{0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

19:06:39 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
openat$vhost_vsock(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)

19:06:39 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x3c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x3c}}, 0x0)

[ 1590.428424] nbd: must specify at least one socket
[ 1590.443030] nbd: must specify a size in bytes for the device
19:06:39 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:39 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x38, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x38}}, 0x0)

[ 1590.497653] nbd: must specify at least one socket
19:06:39 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYRES32, @ANYBLOB="0600"], 0x38}}, 0x0)

19:06:40 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

19:06:40 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x2c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SOCKETS={0x4}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x2c}}, 0x0)

[ 1590.564225] nbd: must specify a size in bytes for the device
[ 1590.576721] nbd: must specify at least one socket
19:06:40 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB, @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:40 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18}, './file0\x00'})
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0))
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18}, './file0\x00'})
r9 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r9, 0x8933, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:40 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYBLOB="060002"], 0x38}}, 0x0)

19:06:40 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

[ 1590.609010] nbd: must specify at least one socket
19:06:40 executing program 3:
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_genetlink_get_family_id$nbd(&(0x7f0000000080), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)
openat$vhost_vsock(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)

19:06:40 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c000300000000000000000014000780080001", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

19:06:40 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:40 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYBLOB="060002"], 0x38}}, 0x0)

19:06:40 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), r1)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES8, @ANYRESDEC=r0, @ANYRES32, @ANYBLOB="0c7e02000000000000000000"], 0x38}, 0x1, 0x0, 0x0, 0x2000c001}, 0x4010)

19:06:40 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

19:06:40 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18}, './file0\x00'})
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0))
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18}, './file0\x00'})
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1590.696744] nbd: must specify at least one socket
[ 1590.706112] nbd: must specify at least one socket
[ 1590.773704] nbd: must specify at least one socket
[ 1590.790584] nbd: must specify a size in bytes for the device
19:06:40 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r3)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000400)={&(0x7f00000003c0)={0x18, r4, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BACKEND_IDENTIFIER={0x4}]}, 0x18}}, 0x0)
r5 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f0000000040), 0x200000, 0x0)
r6 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
r7 = openat$btrfs_control(0xffffffffffffff9c, &(0x7f00000000c0), 0x101400, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000140)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x66f404d45ee4de69}, 0xc, &(0x7f0000000100)={&(0x7f00000002c0)={0xb4, r4, 0xc00, 0x70bd2a, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x3c, 0x7, 0x0, 0x1, [{0x8}, {0x8, 0x1, r5}, {0x8, 0x1, r6}, {0x8, 0x1, r7}, {0x8}, {0x8}, {0x8}]}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0xc}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x20}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0xeb6f}, @NBD_ATTR_BACKEND_IDENTIFIER={0x8, 0xa, 'nbd\x00'}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x2}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x9}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x1}]}, 0xb4}, 0x1, 0x0, 0x0, 0x20004840}, 0x80000)
r8 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r9 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r9, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r10 = openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000380)='/sys/kernel/debug/binder/state\x00', 0x0, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r9, &(0x7f0000000500)={&(0x7f0000000200)={0x10, 0x0, 0x0, 0x10000}, 0xc, &(0x7f00000004c0)={&(0x7f0000000480)={0x30, r4, 0x100, 0x70bd27, 0x25dfdbfe, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8, 0x1, r10}, {0x8, 0x1, r5}]}]}, 0x30}, 0x1, 0x0, 0x0, 0x4008040}, 0x40)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r8, @ANYBLOB="01000000000000000000010000000c00030000000000000000ff6b00078008000100", @ANYRES32, @ANYBLOB="0c0002000000000000000000"], 0x38}}, 0x0)

19:06:40 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010000000000fddbdf25010000000c00030000000000000000000c0007dc08000100", @ANYBLOB="060002"], 0x38}}, 0x0)

19:06:40 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003", @ANYRES32, @ANYBLOB="0f00962b", @ANYRES32, @ANYBLOB="0c00060000000000000000000c0002"], 0x4c}}, 0x0)

[ 1590.815621] nla_parse: 291 callbacks suppressed
[ 1590.815628] netlink: 44 bytes leftover after parsing attributes in process `syz-executor.2'.
[ 1590.842899] nbd: must specify at least one socket
[ 1590.848865] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
19:06:40 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

19:06:40 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

[ 1590.869695] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
[ 1590.907925] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
[ 1590.933051] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
19:06:40 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18}, './file0\x00'})
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0))
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18}, './file0\x00'})
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:40 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18}, './file0\x00'})
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0))
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18}, './file0\x00'})
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:40 executing program 2:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000010000000c0003000000000000000000", @ANYRES32, @ANYBLOB="08000100", @ANYRES32, @ANYBLOB="0c000600fa000000000000000c0002"], 0x4c}}, 0x0)

[ 1590.993007] nbd: must specify an index to disconnect
[ 1590.998178] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'.
[ 1591.007834] nbd: must specify at least one socket
19:06:40 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYRES32, @ANYBLOB="060002"], 0x38}}, 0x0)

19:06:40 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)

19:06:40 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x40, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x40}}, 0x0)

[ 1591.062289] netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
[ 1591.078046] nbd: must specify at least one socket
[ 1591.096273] nbd: must specify at least one socket
19:06:40 executing program 4:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x34, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_BLOCK_SIZE_BYTES={0xc}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x34}}, 0x0)

[ 1591.127675] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
[ 1591.144628] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
19:06:40 executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18}, './file0\x00'})
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0))
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18}, './file0\x00'})
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

[ 1591.205126] netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'.
[ 1591.237759] block nbd0: NBD_DISCONNECT
[ 1591.243785] kasan: CONFIG_KASAN_INLINE enabled
[ 1591.248375] kasan: GPF could be caused by NULL-ptr deref or user memory access
[ 1591.255736] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[ 1591.261977] Modules linked in:
[ 1591.265170] CPU: 0 PID: 776 Comm: systemd-udevd Not tainted 4.14.307-syzkaller #0
[ 1591.272786] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
[ 1591.282139] task: ffff8880a51a6100 task.stack: ffff888099cd8000
[ 1591.288197] RIP: 0010:__lock_acquire+0x1cc/0x3f20
[ 1591.293032] RSP: 0018:ffff888099cdf938 EFLAGS: 00010006
[ 1591.298398] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 1591.298402] RDX: 0000000000000022 RSI: 0000000000000000 RDI: 0000000000000110
[ 1591.298406] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
[ 1591.298410] R10: 0000000000000001 R11: ffff8880a51a6100 R12: 0000000000000110
[ 1591.298413] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8bed1e40
[ 1591.298419] FS:  00007f3d996b58c0(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
[ 1591.298422] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
19:06:40 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYRES32, @ANYBLOB="060002"], 0x38}}, 0x0)

19:06:40 executing program 5:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000600)={0x0, 0x0, &(0x7f00000005c0)={&(0x7f0000000580)={0x14}, 0x14}}, 0x0)
r4 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r4, 0x8933, 0x0)
r5 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r5, 0x8933, 0x0)
r6 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r6, 0x8933, 0x0)
r7 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r7, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000080)={{0x1, 0x1, 0x18}, './file0\x00'})
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0))
r8 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(r8, 0x8933, 0x0)
ioctl$AUTOFS_DEV_IOCTL_SETPIPEFD(0xffffffffffffffff, 0xc0189378, &(0x7f0000000100)={{0x1, 0x1, 0x18}, './file0\x00'})
openat$vcs(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)={0x4c, r2, 0x1, 0x0, 0x0, {}, [@NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x4}, @NBD_ATTR_SOCKETS={0x14, 0x7, 0x0, 0x1, [{0x8}, {0x8}]}, @NBD_ATTR_CLIENT_FLAGS={0xc, 0x6, 0x3}, @NBD_ATTR_SIZE_BYTES={0xc}]}, 0x4c}}, 0x0)

19:06:40 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)={0x38, r1, 0x200, 0x400000}, 0x38}, 0x1, 0x0, 0x0, 0x10}, 0x0)
ioctl$SCSI_IOCTL_START_UNIT(0xffffffffffffffff, 0x5)
ioctl$SCSI_IOCTL_GET_BUS_NUMBER(0xffffffffffffffff, 0x5386, &(0x7f0000000040))

19:06:40 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYRES32, @ANYBLOB="060002"], 0x38}}, 0x0)

19:06:40 executing program 3:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYRES32, @ANYBLOB="060002"], 0x38}}, 0x0)

19:06:40 executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000180), r1)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB='8\x00\x00\x00', @ANYRES16=r2, @ANYBLOB, @ANYRES32, @ANYBLOB="060002"], 0x38}}, 0x0)

[ 1591.298426] CR2: 0000001b2ea27000 CR3: 000000009a2d9000 CR4: 00000000003406f0
[ 1591.298433] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1591.298437] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1591.298440] Call Trace:
[ 1591.298456]  ? vprintk_emit+0x170/0x620
[ 1591.298465]  ? dev_vprintk_emit+0x1da/0x440
[ 1591.298473]  ? trace_hardirqs_on+0x10/0x10
[ 1591.298480]  ? dev_driver_string+0x160/0x160
[ 1591.298488]  ? __switch_to_asm+0x31/0x60
[ 1591.298493]  ? __switch_to_asm+0x25/0x60
[ 1591.298502]  ? __schedule+0x893/0x1de0
[ 1591.298509]  ? __mutex_lock+0x356/0x1310
[ 1591.298517]  lock_acquire+0x170/0x3f0
[ 1591.298525]  ? flush_workqueue+0xcb/0x1310
[ 1591.298533]  flush_workqueue+0xfa/0x1310
[ 1591.298540]  ? flush_workqueue+0xcb/0x1310
[ 1591.298548]  ? nbd_disconnect_and_put+0x99/0x140
[ 1591.298555]  ? lock_downgrade+0x740/0x740
[ 1591.298562]  ? check_flush_dependency+0x2a0/0x2a0
[ 1591.298574]  nbd_disconnect_and_put+0xc3/0x140
[ 1591.298581]  nbd_release+0x123/0x150
[ 1591.298587]  ? nbd_ioctl+0xad0/0xad0
[ 1591.298595]  __blkdev_put+0x5aa/0x800
[ 1591.298602]  ? revalidate_disk+0x1f0/0x1f0
[ 1591.298608]  ? locks_remove_file+0x2cd/0x420
[ 1591.298615]  ? blkdev_put+0x75/0x4c0
[ 1591.298621]  ? blkdev_put+0x4c0/0x4c0
[ 1591.298628]  blkdev_close+0x86/0xb0
[ 1591.298634]  __fput+0x25f/0x7a0
[ 1591.298642]  task_work_run+0x11f/0x190
[ 1591.298651]  exit_to_usermode_loop+0x1ad/0x200
[ 1591.298658]  do_syscall_64+0x4a3/0x640
[ 1591.298664]  entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[ 1591.298670] RIP: 0033:0x7f3d987fb270
[ 1591.298673] RSP: 002b:00007ffe56066038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[ 1591.298679] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f3d987fb270
[ 1591.298682] RDX: 000000000aba9500 RSI: 0000000000000000 RDI: 0000000000000007
[ 1591.298686] RBP: 00007f3d996b5710 R08: 0000559fc492ed30 R09: 0000000000000018
[ 1591.298689] R10: 0000559fc4930f18 R11: 0000000000000246 R12: 0000000000000000
[ 1591.298693] R13: 0000559fc492fab0 R14: 0000000000000003 R15: 000000000000000e
[ 1591.298697] Code: 18 00 00 00 00 48 81 c4 80 01 00 00 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 67 2a 00 00 49 81 3c 24 60 d8 2f 8b 0f 84 5f 
[ 1591.540338] RIP: __lock_acquire+0x1cc/0x3f20 RSP: ffff888099cdf938
[ 1591.540347] ---[ end trace f40cc11e8823cc04 ]---
[ 1591.570389] Kernel panic - not syncing: Fatal exception
[ 1591.570567] Kernel Offset: disabled